Merge commit 'v2.6.33-rc5' into secretlab/test-devicetree

79 files changed, 4168 insertions, 898 deletions

diff --git a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
index a6ce80566625..da9b20a63769 100644
--- a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
+++ b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
@@ -79,7 +79,7 @@ cpld_unmask_irq(unsigned int irq)
 }
 
 static struct irq_chip cpld_pic = {
-	.typename = " CPLD PIC ",
+	.name = " CPLD PIC ",
 	.mask = cpld_mask_irq,
 	.ack = cpld_mask_irq,
 	.unmask = cpld_unmask_irq,
@@ -132,7 +132,7 @@ static int
 cpld_pic_host_map(struct irq_host *h, unsigned int virq,
 			     irq_hw_number_t hw)
 {
-	get_irq_desc(virq)->status |= IRQ_LEVEL;
+	irq_to_desc(virq)->status |= IRQ_LEVEL;
 	set_irq_chip_and_handler(virq, &cpld_pic, handle_level_irq);
 	return 0;
 }
diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig
index 8b8e9560a315..47ea1be1481b 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -62,3 +62,8 @@ config PPC_MPC5200_GPIO
 	select GENERIC_GPIO
 	help
 	  Enable gpiolib support for mpc5200 based boards
+
+config PPC_MPC5200_LPBFIFO
+	tristate "MPC5200 LocalPlus bus FIFO driver"
+	depends on PPC_MPC52xx
+	select PPC_BESTCOMM_GEN_BD
diff --git a/arch/powerpc/platforms/52xx/Makefile b/arch/powerpc/platforms/52xx/Makefile
index bfd4f52cf3dd..2bc8cd0c5cfc 100644
--- a/arch/powerpc/platforms/52xx/Makefile
+++ b/arch/powerpc/platforms/52xx/Makefile
@@ -15,3 +15,4 @@ ifeq ($(CONFIG_PPC_LITE5200),y)
 endif
 
 obj-$(CONFIG_PPC_MPC5200_GPIO)	+= mpc52xx_gpio.o
+obj-$(CONFIG_PPC_MPC5200_LPBFIFO)	+= mpc52xx_lpbfifo.o
diff --git a/arch/powerpc/platforms/52xx/efika.c b/arch/powerpc/platforms/52xx/efika.c
index bcc69e1f77c1..45c0cb9b67e6 100644
--- a/arch/powerpc/platforms/52xx/efika.c
+++ b/arch/powerpc/platforms/52xx/efika.c
@@ -10,7 +10,7 @@
  */
 
 #include <linux/init.h>
-#include <linux/utsrelease.h>
+#include <generated/utsrelease.h>
 #include <linux/pci.h>
 #include <linux/of.h>
 #include <asm/prom.h>
diff --git a/arch/powerpc/platforms/52xx/media5200.c b/arch/powerpc/platforms/52xx/media5200.c
index 68e4f1696d14..0bac3a3dbecf 100644
--- a/arch/powerpc/platforms/52xx/media5200.c
+++ b/arch/powerpc/platforms/52xx/media5200.c
@@ -74,7 +74,7 @@ static void media5200_irq_mask(unsigned int virq)
 }
 
 static struct irq_chip media5200_irq_chip = {
-	.typename = "Media5200 FPGA",
+	.name = "Media5200 FPGA",
 	.unmask = media5200_irq_unmask,
 	.mask = media5200_irq_mask,
 	.mask_ack = media5200_irq_mask,
@@ -86,9 +86,9 @@ void media5200_irq_cascade(unsigned int virq, struct irq_desc *desc)
 	u32 status, enable;
 
 	/* Mask off the cascaded IRQ */
-	spin_lock(&desc->lock);
+	raw_spin_lock(&desc->lock);
 	desc->chip->mask(virq);
-	spin_unlock(&desc->lock);
+	raw_spin_unlock(&desc->lock);
 
 	/* Ask the FPGA for IRQ status.  If 'val' is 0, then no irqs
 	 * are pending.  'ffs()' is 1 based */
@@ -104,17 +104,17 @@ void media5200_irq_cascade(unsigned int virq, struct irq_desc *desc)
 	}
 
 	/* Processing done; can reenable the cascade now */
-	spin_lock(&desc->lock);
+	raw_spin_lock(&desc->lock);
 	desc->chip->ack(virq);
 	if (!(desc->status & IRQ_DISABLED))
 		desc->chip->unmask(virq);
-	spin_unlock(&desc->lock);
+	raw_spin_unlock(&desc->lock);
 }
 
 static int media5200_irq_map(struct irq_host *h, unsigned int virq,
 			     irq_hw_number_t hw)
 {
-	struct irq_desc *desc = get_irq_desc(virq);
+	struct irq_desc *desc = irq_to_desc(virq);
 
 	pr_debug("%s: h=%p, virq=%i, hwirq=%i\n", __func__, h, virq, (int)hw);
 	set_irq_chip_data(virq, &media5200_irq);
@@ -127,7 +127,7 @@ static int media5200_irq_map(struct irq_host *h, unsigned int virq,
 }
 
 static int media5200_irq_xlate(struct irq_host *h, struct device_node *ct,
-				 u32 *intspec, unsigned int intsize,
+				 const u32 *intspec, unsigned int intsize,
 				 irq_hw_number_t *out_hwirq,
 				 unsigned int *out_flags)
 {
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index bfbcd418e690..6f8ebe1085b3 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -16,8 +16,14 @@
  * output signals or measure input signals.
  *
  * This driver supports the GPIO and IRQ controller functions of the GPT
- * device.  Timer functions are not yet supported, nor is the watchdog
- * timer.
+ * device.  Timer functions are not yet supported.
+ *
+ * The timer gpt0 can be used as watchdog (wdt).  If the wdt mode is used,
+ * this prevents the use of any gpt0 gpt function (i.e. they will fail with
+ * -EBUSY).  Thus, the safety wdt function always has precedence over the gpt
+ * function.  If the kernel has been compiled with CONFIG_WATCHDOG_NOWAYOUT,
+ * this means that gpt0 is locked in wdt mode until the next reboot - this
+ * may be a requirement in safety applications.
  *
  * To use the GPIO function, the following two properties must be added
  * to the device tree node for the gpt device (typically in the .dts file
@@ -46,17 +52,24 @@
  * the output mode.  This driver does not change the output mode setting.
  */
 
+#include <linux/device.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/of_gpio.h>
 #include <linux/kernel.h>
+#include <linux/watchdog.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <asm/div64.h>
 #include <asm/mpc52xx.h>
 
 MODULE_DESCRIPTION("Freescale MPC52xx gpt driver");
-MODULE_AUTHOR("Sascha Hauer, Grant Likely");
+MODULE_AUTHOR("Sascha Hauer, Grant Likely, Albrecht Dreß");
 MODULE_LICENSE("GPL");
 
 /**
@@ -66,18 +79,27 @@ MODULE_LICENSE("GPL");
  * @lock: spinlock to coordinate between different functions.
  * @of_gc: of_gpio_chip instance structure; used when GPIO is enabled
  * @irqhost: Pointer to irq_host instance; used when IRQ mode is supported
+ * @wdt_mode: only relevant for gpt0: bit 0 (MPC52xx_GPT_CAN_WDT) indicates
+ *   if the gpt may be used as wdt, bit 1 (MPC52xx_GPT_IS_WDT) indicates
+ *   if the timer is actively used as wdt which blocks gpt functions
  */
 struct mpc52xx_gpt_priv {
+	struct list_head list;		/* List of all GPT devices */
 	struct device *dev;
 	struct mpc52xx_gpt __iomem *regs;
 	spinlock_t lock;
 	struct irq_host *irqhost;
+	u32 ipb_freq;
+	u8 wdt_mode;
 
 #if defined(CONFIG_GPIOLIB)
 	struct of_gpio_chip of_gc;
 #endif
 };
 
+LIST_HEAD(mpc52xx_gpt_list);
+DEFINE_MUTEX(mpc52xx_gpt_list_mutex);
+
 #define MPC52xx_GPT_MODE_MS_MASK	(0x07)
 #define MPC52xx_GPT_MODE_MS_IC		(0x01)
 #define MPC52xx_GPT_MODE_MS_OC		(0x02)
@@ -88,15 +110,25 @@ struct mpc52xx_gpt_priv {
 #define MPC52xx_GPT_MODE_GPIO_OUT_LOW	(0x20)
 #define MPC52xx_GPT_MODE_GPIO_OUT_HIGH	(0x30)
 
+#define MPC52xx_GPT_MODE_COUNTER_ENABLE	(0x1000)
+#define MPC52xx_GPT_MODE_CONTINUOUS	(0x0400)
+#define MPC52xx_GPT_MODE_OPEN_DRAIN	(0x0200)
 #define MPC52xx_GPT_MODE_IRQ_EN		(0x0100)
+#define MPC52xx_GPT_MODE_WDT_EN		(0x8000)
 
 #define MPC52xx_GPT_MODE_ICT_MASK	(0x030000)
 #define MPC52xx_GPT_MODE_ICT_RISING	(0x010000)
 #define MPC52xx_GPT_MODE_ICT_FALLING	(0x020000)
 #define MPC52xx_GPT_MODE_ICT_TOGGLE	(0x030000)
 
+#define MPC52xx_GPT_MODE_WDT_PING	(0xa5)
+
 #define MPC52xx_GPT_STATUS_IRQMASK	(0x000f)
 
+#define MPC52xx_GPT_CAN_WDT		(1 << 0)
+#define MPC52xx_GPT_IS_WDT		(1 << 1)
+
+
 /* ---------------------------------------------------------------------
  * Cascaded interrupt controller hooks
  */
@@ -149,7 +181,7 @@ static int mpc52xx_gpt_irq_set_type(unsigned int virq, unsigned int flow_type)
 }
 
 static struct irq_chip mpc52xx_gpt_irq_chip = {
-	.typename = "MPC52xx GPT",
+	.name = "MPC52xx GPT",
 	.unmask = mpc52xx_gpt_irq_unmask,
 	.mask = mpc52xx_gpt_irq_mask,
 	.ack = mpc52xx_gpt_irq_ack,
@@ -182,7 +214,7 @@ static int mpc52xx_gpt_irq_map(struct irq_host *h, unsigned int virq,
 }
 
 static int mpc52xx_gpt_irq_xlate(struct irq_host *h, struct device_node *ct,
-				 u32 *intspec, unsigned int intsize,
+				 const u32 *intspec, unsigned int intsize,
 				 irq_hw_number_t *out_hwirq,
 				 unsigned int *out_flags)
 {
@@ -190,7 +222,7 @@ static int mpc52xx_gpt_irq_xlate(struct irq_host *h, struct device_node *ct,
 
 	dev_dbg(gpt->dev, "%s: flags=%i\n", __func__, intspec[0]);
 
-	if ((intsize < 1) || (intspec[0] < 1) || (intspec[0] > 3)) {
+	if ((intsize < 1) || (intspec[0] > 3)) {
 		dev_err(gpt->dev, "bad irq specifier in %s\n", ct->full_name);
 		return -EINVAL;
 	}
@@ -211,13 +243,11 @@ mpc52xx_gpt_irq_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
 {
 	int cascade_virq;
 	unsigned long flags;
-
-	/* Only setup cascaded IRQ if device tree claims the GPT is
-	 * an interrupt controller */
-	if (!of_find_property(node, "interrupt-controller", NULL))
-		return;
+	u32 mode;
 
 	cascade_virq = irq_of_parse_and_map(node, 0);
+	if (!cascade_virq)
+		return;
 
 	gpt->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR, 1,
 				      &mpc52xx_gpt_irq_ops, -1);
@@ -227,14 +257,16 @@ mpc52xx_gpt_irq_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
 	}
 
 	gpt->irqhost->host_data = gpt;
-
 	set_irq_data(cascade_virq, gpt);
 	set_irq_chained_handler(cascade_virq, mpc52xx_gpt_irq_cascade);
 
-	/* Set to Input Capture mode */
+	/* If the GPT is currently disabled, then change it to be in Input
+	 * Capture mode.  If the mode is non-zero, then the pin could be
+	 * already in use for something. */
 	spin_lock_irqsave(&gpt->lock, flags);
-	clrsetbits_be32(&gpt->regs->mode, MPC52xx_GPT_MODE_MS_MASK,
-			MPC52xx_GPT_MODE_MS_IC);
+	mode = in_be32(&gpt->regs->mode);
+	if ((mode & MPC52xx_GPT_MODE_MS_MASK) == 0)
+		out_be32(&gpt->regs->mode, mode | MPC52xx_GPT_MODE_MS_IC);
 	spin_unlock_irqrestore(&gpt->lock, flags);
 
 	dev_dbg(gpt->dev, "%s() complete. virq=%i\n", __func__, cascade_virq);
@@ -335,6 +367,354 @@ static void
 mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *p, struct device_node *np) { }
 #endif /* defined(CONFIG_GPIOLIB) */
 
+/***********************************************************************
+ * Timer API
+ */
+
+/**
+ * mpc52xx_gpt_from_irq - Return the GPT device associated with an IRQ number
+ * @irq: irq of timer.
+ */
+struct mpc52xx_gpt_priv *mpc52xx_gpt_from_irq(int irq)
+{
+	struct mpc52xx_gpt_priv *gpt;
+	struct list_head *pos;
+
+	/* Iterate over the list of timers looking for a matching device */
+	mutex_lock(&mpc52xx_gpt_list_mutex);
+	list_for_each(pos, &mpc52xx_gpt_list) {
+		gpt = container_of(pos, struct mpc52xx_gpt_priv, list);
+		if (gpt->irqhost && irq == irq_linear_revmap(gpt->irqhost, 0)) {
+			mutex_unlock(&mpc52xx_gpt_list_mutex);
+			return gpt;
+		}
+	}
+	mutex_unlock(&mpc52xx_gpt_list_mutex);
+
+	return NULL;
+}
+EXPORT_SYMBOL(mpc52xx_gpt_from_irq);
+
+static int mpc52xx_gpt_do_start(struct mpc52xx_gpt_priv *gpt, u64 period,
+				int continuous, int as_wdt)
+{
+	u32 clear, set;
+	u64 clocks;
+	u32 prescale;
+	unsigned long flags;
+
+	clear = MPC52xx_GPT_MODE_MS_MASK | MPC52xx_GPT_MODE_CONTINUOUS;
+	set = MPC52xx_GPT_MODE_MS_GPIO | MPC52xx_GPT_MODE_COUNTER_ENABLE;
+	if (as_wdt) {
+		clear |= MPC52xx_GPT_MODE_IRQ_EN;
+		set |= MPC52xx_GPT_MODE_WDT_EN;
+	} else if (continuous)
+		set |= MPC52xx_GPT_MODE_CONTINUOUS;
+
+	/* Determine the number of clocks in the requested period.  64 bit
+	 * arithmatic is done here to preserve the precision until the value
+	 * is scaled back down into the u32 range.  Period is in 'ns', bus
+	 * frequency is in Hz. */
+	clocks = period * (u64)gpt->ipb_freq;
+	do_div(clocks, 1000000000); /* Scale it down to ns range */
+
+	/* This device cannot handle a clock count greater than 32 bits */
+	if (clocks > 0xffffffff)
+		return -EINVAL;
+
+	/* Calculate the prescaler and count values from the clocks value.
+	 * 'clocks' is the number of clock ticks in the period.  The timer
+	 * has 16 bit precision and a 16 bit prescaler.  Prescaler is
+	 * calculated by integer dividing the clocks by 0x10000 (shifting
+	 * down 16 bits) to obtain the smallest possible divisor for clocks
+	 * to get a 16 bit count value.
+	 *
+	 * Note: the prescale register is '1' based, not '0' based.  ie. a
+	 * value of '1' means divide the clock by one.  0xffff divides the
+	 * clock by 0xffff.  '0x0000' does not divide by zero, but wraps
+	 * around and divides by 0x10000.  That is why prescale must be
+	 * a u32 variable, not a u16, for this calculation. */
+	prescale = (clocks >> 16) + 1;
+	do_div(clocks, prescale);
+	if (clocks > 0xffff) {
+		pr_err("calculation error; prescale:%x clocks:%llx\n",
+		       prescale, clocks);
+		return -EINVAL;
+	}
+
+	/* Set and enable the timer, reject an attempt to use a wdt as gpt */
+	spin_lock_irqsave(&gpt->lock, flags);
+	if (as_wdt)
+		gpt->wdt_mode |= MPC52xx_GPT_IS_WDT;
+	else if ((gpt->wdt_mode & MPC52xx_GPT_IS_WDT) != 0) {
+		spin_unlock_irqrestore(&gpt->lock, flags);
+		return -EBUSY;
+	}
+	out_be32(&gpt->regs->count, prescale << 16 | clocks);
+	clrsetbits_be32(&gpt->regs->mode, clear, set);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+
+	return 0;
+}
+
+/**
+ * mpc52xx_gpt_start_timer - Set and enable the GPT timer
+ * @gpt: Pointer to gpt private data structure
+ * @period: period of timer in ns; max. ~130s @ 33MHz IPB clock
+ * @continuous: set to 1 to make timer continuous free running
+ *
+ * An interrupt will be generated every time the timer fires
+ */
+int mpc52xx_gpt_start_timer(struct mpc52xx_gpt_priv *gpt, u64 period,
+                            int continuous)
+{
+	return mpc52xx_gpt_do_start(gpt, period, continuous, 0);
+}
+EXPORT_SYMBOL(mpc52xx_gpt_start_timer);
+
+/**
+ * mpc52xx_gpt_stop_timer - Stop a gpt
+ * @gpt: Pointer to gpt private data structure
+ *
+ * Returns an error if attempting to stop a wdt
+ */
+int mpc52xx_gpt_stop_timer(struct mpc52xx_gpt_priv *gpt)
+{
+	unsigned long flags;
+
+	/* reject the operation if the timer is used as watchdog (gpt 0 only) */
+	spin_lock_irqsave(&gpt->lock, flags);
+	if ((gpt->wdt_mode & MPC52xx_GPT_IS_WDT) != 0) {
+		spin_unlock_irqrestore(&gpt->lock, flags);
+		return -EBUSY;
+	}
+
+	clrbits32(&gpt->regs->mode, MPC52xx_GPT_MODE_COUNTER_ENABLE);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+	return 0;
+}
+EXPORT_SYMBOL(mpc52xx_gpt_stop_timer);
+
+/**
+ * mpc52xx_gpt_timer_period - Read the timer period
+ * @gpt: Pointer to gpt private data structure
+ *
+ * Returns the timer period in ns
+ */
+u64 mpc52xx_gpt_timer_period(struct mpc52xx_gpt_priv *gpt)
+{
+	u64 period;
+	u64 prescale;
+	unsigned long flags;
+
+	spin_lock_irqsave(&gpt->lock, flags);
+	period = in_be32(&gpt->regs->count);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+
+	prescale = period >> 16;
+	period &= 0xffff;
+	if (prescale == 0)
+		prescale = 0x10000;
+	period = period * prescale * 1000000000ULL;
+	do_div(period, (u64)gpt->ipb_freq);
+	return period;
+}
+EXPORT_SYMBOL(mpc52xx_gpt_timer_period);
+
+#if defined(CONFIG_MPC5200_WDT)
+/***********************************************************************
+ * Watchdog API for gpt0
+ */
+
+#define WDT_IDENTITY	    "mpc52xx watchdog on GPT0"
+
+/* wdt_is_active stores wether or not the /dev/watchdog device is opened */
+static unsigned long wdt_is_active;
+
+/* wdt-capable gpt */
+static struct mpc52xx_gpt_priv *mpc52xx_gpt_wdt;
+
+/* low-level wdt functions */
+static inline void mpc52xx_gpt_wdt_ping(struct mpc52xx_gpt_priv *gpt_wdt)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&gpt_wdt->lock, flags);
+	out_8((u8 *) &gpt_wdt->regs->mode, MPC52xx_GPT_MODE_WDT_PING);
+	spin_unlock_irqrestore(&gpt_wdt->lock, flags);
+}
+
+/* wdt misc device api */
+static ssize_t mpc52xx_wdt_write(struct file *file, const char __user *data,
+				 size_t len, loff_t *ppos)
+{
+	struct mpc52xx_gpt_priv *gpt_wdt = file->private_data;
+	mpc52xx_gpt_wdt_ping(gpt_wdt);
+	return 0;
+}
+
+static struct watchdog_info mpc5200_wdt_info = {
+	.options	= WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+	.identity	= WDT_IDENTITY,
+};
+
+static long mpc52xx_wdt_ioctl(struct file *file, unsigned int cmd,
+			      unsigned long arg)
+{
+	struct mpc52xx_gpt_priv *gpt_wdt = file->private_data;
+	int __user *data = (int __user *)arg;
+	int timeout;
+	u64 real_timeout;
+	int ret = 0;
+
+	switch (cmd) {
+	case WDIOC_GETSUPPORT:
+		ret = copy_to_user(data, &mpc5200_wdt_info,
+				   sizeof(mpc5200_wdt_info));
+		if (ret)
+			ret = -EFAULT;
+		break;
+
+	case WDIOC_GETSTATUS:
+	case WDIOC_GETBOOTSTATUS:
+		ret = put_user(0, data);
+		break;
+
+	case WDIOC_KEEPALIVE:
+		mpc52xx_gpt_wdt_ping(gpt_wdt);
+		break;
+
+	case WDIOC_SETTIMEOUT:
+		ret = get_user(timeout, data);
+		if (ret)
+			break;
+		real_timeout = (u64) timeout * 1000000000ULL;
+		ret = mpc52xx_gpt_do_start(gpt_wdt, real_timeout, 0, 1);
+		if (ret)
+			break;
+		/* fall through and return the timeout */
+
+	case WDIOC_GETTIMEOUT:
+		/* we need to round here as to avoid e.g. the following
+		 * situation:
+		 * - timeout requested is 1 second;
+		 * - real timeout @33MHz is 999997090ns
+		 * - the int divide by 10^9 will return 0.
+		 */
+		real_timeout =
+			mpc52xx_gpt_timer_period(gpt_wdt) + 500000000ULL;
+		do_div(real_timeout, 1000000000ULL);
+		timeout = (int) real_timeout;
+		ret = put_user(timeout, data);
+		break;
+
+	default:
+		ret = -ENOTTY;
+	}
+	return ret;
+}
+
+static int mpc52xx_wdt_open(struct inode *inode, struct file *file)
+{
+	int ret;
+
+	/* sanity check */
+	if (!mpc52xx_gpt_wdt)
+		return -ENODEV;
+
+	/* /dev/watchdog can only be opened once */
+	if (test_and_set_bit(0, &wdt_is_active))
+		return -EBUSY;
+
+	/* Set and activate the watchdog with 30 seconds timeout */
+	ret = mpc52xx_gpt_do_start(mpc52xx_gpt_wdt, 30ULL * 1000000000ULL,
+				   0, 1);
+	if (ret) {
+		clear_bit(0, &wdt_is_active);
+		return ret;
+	}
+
+	file->private_data = mpc52xx_gpt_wdt;
+	return nonseekable_open(inode, file);
+}
+
+static int mpc52xx_wdt_release(struct inode *inode, struct file *file)
+{
+	/* note: releasing the wdt in NOWAYOUT-mode does not stop it */
+#if !defined(CONFIG_WATCHDOG_NOWAYOUT)
+	struct mpc52xx_gpt_priv *gpt_wdt = file->private_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&gpt_wdt->lock, flags);
+	clrbits32(&gpt_wdt->regs->mode,
+		  MPC52xx_GPT_MODE_COUNTER_ENABLE | MPC52xx_GPT_MODE_WDT_EN);
+	gpt_wdt->wdt_mode &= ~MPC52xx_GPT_IS_WDT;
+	spin_unlock_irqrestore(&gpt_wdt->lock, flags);
+#endif
+	clear_bit(0, &wdt_is_active);
+	return 0;
+}
+
+
+static const struct file_operations mpc52xx_wdt_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.write		= mpc52xx_wdt_write,
+	.unlocked_ioctl = mpc52xx_wdt_ioctl,
+	.open		= mpc52xx_wdt_open,
+	.release	= mpc52xx_wdt_release,
+};
+
+static struct miscdevice mpc52xx_wdt_miscdev = {
+	.minor		= WATCHDOG_MINOR,
+	.name		= "watchdog",
+	.fops		= &mpc52xx_wdt_fops,
+};
+
+static int __devinit mpc52xx_gpt_wdt_init(void)
+{
+	int err;
+
+	/* try to register the watchdog misc device */
+	err = misc_register(&mpc52xx_wdt_miscdev);
+	if (err)
+		pr_err("%s: cannot register watchdog device\n", WDT_IDENTITY);
+	else
+		pr_info("%s: watchdog device registered\n", WDT_IDENTITY);
+	return err;
+}
+
+static int mpc52xx_gpt_wdt_setup(struct mpc52xx_gpt_priv *gpt,
+				 const u32 *period)
+{
+	u64 real_timeout;
+
+	/* remember the gpt for the wdt operation */
+	mpc52xx_gpt_wdt = gpt;
+
+	/* configure the wdt if the device tree contained a timeout */
+	if (!period || *period == 0)
+		return 0;
+
+	real_timeout = (u64) *period * 1000000000ULL;
+	if (mpc52xx_gpt_do_start(gpt, real_timeout, 0, 1))
+		dev_warn(gpt->dev, "starting as wdt failed\n");
+	else
+		dev_info(gpt->dev, "watchdog set to %us timeout\n", *period);
+	return 0;
+}
+
+#else
+
+static int __devinit mpc52xx_gpt_wdt_init(void)
+{
+	return 0;
+}
+
+#define mpc52xx_gpt_wdt_setup(x, y)		(0)
+
+#endif	/*  CONFIG_MPC5200_WDT	*/
+
 /* ---------------------------------------------------------------------
  * of_platform bus binding code
  */
@@ -349,6 +729,7 @@ static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev,
 
 	spin_lock_init(&gpt->lock);
 	gpt->dev = &ofdev->dev;
+	gpt->ipb_freq = mpc5xxx_get_bus_frequency(ofdev->node);
 	gpt->regs = of_iomap(ofdev->node, 0);
 	if (!gpt->regs) {
 		kfree(gpt);
@@ -360,6 +741,26 @@ static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev,
 	mpc52xx_gpt_gpio_setup(gpt, ofdev->node);
 	mpc52xx_gpt_irq_setup(gpt, ofdev->node);
 
+	mutex_lock(&mpc52xx_gpt_list_mutex);
+	list_add(&gpt->list, &mpc52xx_gpt_list);
+	mutex_unlock(&mpc52xx_gpt_list_mutex);
+
+	/* check if this device could be a watchdog */
+	if (of_get_property(ofdev->node, "fsl,has-wdt", NULL) ||
+	    of_get_property(ofdev->node, "has-wdt", NULL)) {
+		const u32 *on_boot_wdt;
+
+		gpt->wdt_mode = MPC52xx_GPT_CAN_WDT;
+		on_boot_wdt = of_get_property(ofdev->node, "fsl,wdt-on-boot",
+					      NULL);
+		if (on_boot_wdt) {
+			dev_info(gpt->dev, "used as watchdog\n");
+			gpt->wdt_mode |= MPC52xx_GPT_IS_WDT;
+		} else
+			dev_info(gpt->dev, "can function as watchdog\n");
+		mpc52xx_gpt_wdt_setup(gpt, on_boot_wdt);
+	}
+
 	return 0;
 }
 
@@ -394,3 +795,4 @@ static int __init mpc52xx_gpt_init(void)
 
 /* Make sure GPIOs and IRQs get set up before anyone tries to use them */
 subsys_initcall(mpc52xx_gpt_init);
+device_initcall(mpc52xx_gpt_wdt_init);
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
new file mode 100644
index 000000000000..929d017535a3
--- /dev/null
+++ b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
@@ -0,0 +1,560 @@
+/*
+ * LocalPlus Bus FIFO driver for the Freescale MPC52xx.
+ *
+ * Copyright (C) 2009 Secret Lab Technologies Ltd.
+ *
+ * This file is released under the GPLv2
+ *
+ * Todo:
+ * - Add support for multiple requests to be queued.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/mpc52xx.h>
+#include <asm/time.h>
+
+#include <sysdev/bestcomm/bestcomm.h>
+#include <sysdev/bestcomm/bestcomm_priv.h>
+#include <sysdev/bestcomm/gen_bd.h>
+
+MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
+MODULE_DESCRIPTION("MPC5200 LocalPlus FIFO device driver");
+MODULE_LICENSE("GPL");
+
+#define LPBFIFO_REG_PACKET_SIZE		(0x00)
+#define LPBFIFO_REG_START_ADDRESS	(0x04)
+#define LPBFIFO_REG_CONTROL		(0x08)
+#define LPBFIFO_REG_ENABLE		(0x0C)
+#define LPBFIFO_REG_BYTES_DONE_STATUS	(0x14)
+#define LPBFIFO_REG_FIFO_DATA		(0x40)
+#define LPBFIFO_REG_FIFO_STATUS		(0x44)
+#define LPBFIFO_REG_FIFO_CONTROL	(0x48)
+#define LPBFIFO_REG_FIFO_ALARM		(0x4C)
+
+struct mpc52xx_lpbfifo {
+	struct device *dev;
+	phys_addr_t regs_phys;
+	void __iomem *regs;
+	int irq;
+	spinlock_t lock;
+
+	struct bcom_task *bcom_tx_task;
+	struct bcom_task *bcom_rx_task;
+	struct bcom_task *bcom_cur_task;
+
+	/* Current state data */
+	struct mpc52xx_lpbfifo_request *req;
+	int dma_irqs_enabled;
+};
+
+/* The MPC5200 has only one fifo, so only need one instance structure */
+static struct mpc52xx_lpbfifo lpbfifo;
+
+/**
+ * mpc52xx_lpbfifo_kick - Trigger the next block of data to be transfered
+ */
+static void mpc52xx_lpbfifo_kick(struct mpc52xx_lpbfifo_request *req)
+{
+	size_t transfer_size = req->size - req->pos;
+	struct bcom_bd *bd;
+	void __iomem *reg;
+	u32 *data;
+	int i;
+	int bit_fields;
+	int dma = !(req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA);
+	int write = req->flags & MPC52XX_LPBFIFO_FLAG_WRITE;
+	int poll_dma = req->flags & MPC52XX_LPBFIFO_FLAG_POLL_DMA;
+
+	/* Set and clear the reset bits; is good practice in User Manual */
+	out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000);
+
+	/* set master enable bit */
+	out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x00000001);
+	if (!dma) {
+		/* While the FIFO can be setup for transfer sizes as large as
+		 * 16M-1, the FIFO itself is only 512 bytes deep and it does
+		 * not generate interrupts for FIFO full events (only transfer
+		 * complete will raise an IRQ).  Therefore when not using
+		 * Bestcomm to drive the FIFO it needs to either be polled, or
+		 * transfers need to constrained to the size of the fifo.
+		 *
+		 * This driver restricts the size of the transfer
+		 */
+		if (transfer_size > 512)
+			transfer_size = 512;
+
+		/* Load the FIFO with data */
+		if (write) {
+			reg = lpbfifo.regs + LPBFIFO_REG_FIFO_DATA;
+			data = req->data + req->pos;
+			for (i = 0; i < transfer_size; i += 4)
+				out_be32(reg, *data++);
+		}
+
+		/* Unmask both error and completion irqs */
+		out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x00000301);
+	} else {
+		/* Choose the correct direction
+		 *
+		 * Configure the watermarks so DMA will always complete correctly.
+		 * It may be worth experimenting with the ALARM value to see if
+		 * there is a performance impacit.  However, if it is wrong there
+		 * is a risk of DMA not transferring the last chunk of data
+		 */
+		if (write) {
+			out_be32(lpbfifo.regs + LPBFIFO_REG_FIFO_ALARM, 0x1e4);
+			out_8(lpbfifo.regs + LPBFIFO_REG_FIFO_CONTROL, 7);
+			lpbfifo.bcom_cur_task = lpbfifo.bcom_tx_task;
+		} else {
+			out_be32(lpbfifo.regs + LPBFIFO_REG_FIFO_ALARM, 0x1ff);
+			out_8(lpbfifo.regs + LPBFIFO_REG_FIFO_CONTROL, 0);
+			lpbfifo.bcom_cur_task = lpbfifo.bcom_rx_task;
+
+			if (poll_dma) {
+				if (lpbfifo.dma_irqs_enabled) {
+					disable_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task));
+					lpbfifo.dma_irqs_enabled = 0;
+				}
+			} else {
+				if (!lpbfifo.dma_irqs_enabled) {
+					enable_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task));
+					lpbfifo.dma_irqs_enabled = 1;
+				}
+			}
+		}
+
+		bd = bcom_prepare_next_buffer(lpbfifo.bcom_cur_task);
+		bd->status = transfer_size;
+		if (!write) {
+			/*
+			 * In the DMA read case, the DMA doesn't complete,
+			 * possibly due to incorrect watermarks in the ALARM
+			 * and CONTROL regs. For now instead of trying to
+			 * determine the right watermarks that will make this
+			 * work, just increase the number of bytes the FIFO is
+			 * expecting.
+			 *
+			 * When submitting another operation, the FIFO will get
+			 * reset, so the condition of the FIFO waiting for a
+			 * non-existent 4 bytes will get cleared.
+			 */
+			transfer_size += 4; /* BLECH! */
+		}
+		bd->data[0] = req->data_phys + req->pos;
+		bcom_submit_next_buffer(lpbfifo.bcom_cur_task, NULL);
+
+		/* error irq & master enabled bit */
+		bit_fields = 0x00000201;
+
+		/* Unmask irqs */
+		if (write && (!poll_dma))
+			bit_fields |= 0x00000100; /* completion irq too */
+		out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, bit_fields);
+	}
+
+	/* Set transfer size, width, chip select and READ mode */
+	out_be32(lpbfifo.regs + LPBFIFO_REG_START_ADDRESS,
+		 req->offset + req->pos);
+	out_be32(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, transfer_size);
+
+	bit_fields = req->cs << 24 | 0x000008;
+	if (!write)
+		bit_fields |= 0x010000; /* read mode */
+	out_be32(lpbfifo.regs + LPBFIFO_REG_CONTROL, bit_fields);
+
+	/* Kick it off */
+	out_8(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, 0x01);
+	if (dma)
+		bcom_enable(lpbfifo.bcom_cur_task);
+}
+
+/**
+ * mpc52xx_lpbfifo_irq - IRQ handler for LPB FIFO
+ *
+ * On transmit, the dma completion irq triggers before the fifo completion
+ * triggers.  Handle the dma completion here instead of the LPB FIFO Bestcomm
+ * task completion irq becuase everyting is not really done until the LPB FIFO
+ * completion irq triggers.
+ *
+ * In other words:
+ * For DMA, on receive, the "Fat Lady" is the bestcom completion irq. on
+ * transmit, the fifo completion irq is the "Fat Lady". The opera (or in this
+ * case the DMA/FIFO operation) is not finished until the "Fat Lady" sings.
+ *
+ * Reasons for entering this routine:
+ * 1) PIO mode rx and tx completion irq
+ * 2) DMA interrupt mode tx completion irq
+ * 3) DMA polled mode tx
+ *
+ * Exit conditions:
+ * 1) Transfer aborted
+ * 2) FIFO complete without DMA; more data to do
+ * 3) FIFO complete without DMA; all data transfered
+ * 4) FIFO complete using DMA
+ *
+ * Condition 1 can occur regardless of whether or not DMA is used.
+ * It requires executing the callback to report the error and exiting
+ * immediately.
+ *
+ * Condition 2 requires programming the FIFO with the next block of data
+ *
+ * Condition 3 requires executing the callback to report completion
+ *
+ * Condition 4 means the same as 3, except that we also retrieve the bcom
+ * buffer so DMA doesn't get clogged up.
+ *
+ * To make things trickier, the spinlock must be dropped before
+ * executing the callback, otherwise we could end up with a deadlock
+ * or nested spinlock condition.  The out path is non-trivial, so
+ * extra fiddling is done to make sure all paths lead to the same
+ * outbound code.
+ */
+static irqreturn_t mpc52xx_lpbfifo_irq(int irq, void *dev_id)
+{
+	struct mpc52xx_lpbfifo_request *req;
+	u32 status = in_8(lpbfifo.regs + LPBFIFO_REG_BYTES_DONE_STATUS);
+	void __iomem *reg;
+	u32 *data;
+	int count, i;
+	int do_callback = 0;
+	u32 ts;
+	unsigned long flags;
+	int dma, write, poll_dma;
+
+	spin_lock_irqsave(&lpbfifo.lock, flags);
+	ts = get_tbl();
+
+	req = lpbfifo.req;
+	if (!req) {
+		spin_unlock_irqrestore(&lpbfifo.lock, flags);
+		pr_err("bogus LPBFIFO IRQ\n");
+		return IRQ_HANDLED;
+	}
+
+	dma = !(req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA);
+	write = req->flags & MPC52XX_LPBFIFO_FLAG_WRITE;
+	poll_dma = req->flags & MPC52XX_LPBFIFO_FLAG_POLL_DMA;
+
+	if (dma && !write) {
+		spin_unlock_irqrestore(&lpbfifo.lock, flags);
+		pr_err("bogus LPBFIFO IRQ (dma and not writting)\n");
+		return IRQ_HANDLED;
+	}
+
+	if ((status & 0x01) == 0) {
+		goto out;
+	}
+
+	/* check abort bit */
+	if (status & 0x10) {
+		out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000);
+		do_callback = 1;
+		goto out;
+	}
+
+	/* Read result from hardware */
+	count = in_be32(lpbfifo.regs + LPBFIFO_REG_BYTES_DONE_STATUS);
+	count &= 0x00ffffff;
+
+	if (!dma && !write) {
+		/* copy the data out of the FIFO */
+		reg = lpbfifo.regs + LPBFIFO_REG_FIFO_DATA;
+		data = req->data + req->pos;
+		for (i = 0; i < count; i += 4)
+			*data++ = in_be32(reg);
+	}
+
+	/* Update transfer position and count */
+	req->pos += count;
+
+	/* Decide what to do next */
+	if (req->size - req->pos)
+		mpc52xx_lpbfifo_kick(req); /* more work to do */
+	else
+		do_callback = 1;
+
+ out:
+	/* Clear the IRQ */
+	out_8(lpbfifo.regs + LPBFIFO_REG_BYTES_DONE_STATUS, 0x01);
+
+	if (dma && (status & 0x11)) {
+		/*
+		 * Count the DMA as complete only when the FIFO completion
+		 * status or abort bits are set.
+		 *
+		 * (status & 0x01) should always be the case except sometimes
+		 * when using polled DMA.
+		 *
+		 * (status & 0x10) {transfer aborted}: This case needs more
+		 * testing.
+		 */
+		bcom_retrieve_buffer(lpbfifo.bcom_cur_task, &status, NULL);
+	}
+	req->last_byte = ((u8 *)req->data)[req->size - 1];
+
+	/* When the do_callback flag is set; it means the transfer is finished
+	 * so set the FIFO as idle */
+	if (do_callback)
+		lpbfifo.req = NULL;
+
+	if (irq != 0) /* don't increment on polled case */
+		req->irq_count++;
+
+	req->irq_ticks += get_tbl() - ts;
+	spin_unlock_irqrestore(&lpbfifo.lock, flags);
+
+	/* Spinlock is released; it is now safe to call the callback */
+	if (do_callback && req->callback)
+		req->callback(req);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * mpc52xx_lpbfifo_bcom_irq - IRQ handler for LPB FIFO Bestcomm task
+ *
+ * Only used when receiving data.
+ */
+static irqreturn_t mpc52xx_lpbfifo_bcom_irq(int irq, void *dev_id)
+{
+	struct mpc52xx_lpbfifo_request *req;
+	unsigned long flags;
+	u32 status;
+	u32 ts;
+
+	spin_lock_irqsave(&lpbfifo.lock, flags);
+	ts = get_tbl();
+
+	req = lpbfifo.req;
+	if (!req || (req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA)) {
+		spin_unlock_irqrestore(&lpbfifo.lock, flags);
+		return IRQ_HANDLED;
+	}
+
+	if (irq != 0) /* don't increment on polled case */
+		req->irq_count++;
+
+	if (!bcom_buffer_done(lpbfifo.bcom_cur_task)) {
+		spin_unlock_irqrestore(&lpbfifo.lock, flags);
+
+		req->buffer_not_done_cnt++;
+		if ((req->buffer_not_done_cnt % 1000) == 0)
+			pr_err("transfer stalled\n");
+
+		return IRQ_HANDLED;
+	}
+
+	bcom_retrieve_buffer(lpbfifo.bcom_cur_task, &status, NULL);
+
+	req->last_byte = ((u8 *)req->data)[req->size - 1];
+
+	req->pos = status & 0x00ffffff;
+
+	/* Mark the FIFO as idle */
+	lpbfifo.req = NULL;
+
+	/* Release the lock before calling out to the callback. */
+	req->irq_ticks += get_tbl() - ts;
+	spin_unlock_irqrestore(&lpbfifo.lock, flags);
+
+	if (req->callback)
+		req->callback(req);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * mpc52xx_lpbfifo_bcom_poll - Poll for DMA completion
+ */
+void mpc52xx_lpbfifo_poll(void)
+{
+	struct mpc52xx_lpbfifo_request *req = lpbfifo.req;
+	int dma = !(req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA);
+	int write = req->flags & MPC52XX_LPBFIFO_FLAG_WRITE;
+
+	/*
+	 * For more information, see comments on the "Fat Lady" 
+	 */
+	if (dma && write)
+		mpc52xx_lpbfifo_irq(0, NULL);
+	else 
+		mpc52xx_lpbfifo_bcom_irq(0, NULL);
+}
+EXPORT_SYMBOL(mpc52xx_lpbfifo_poll);
+
+/**
+ * mpc52xx_lpbfifo_submit - Submit an LPB FIFO transfer request.
+ * @req: Pointer to request structure
+ */
+int mpc52xx_lpbfifo_submit(struct mpc52xx_lpbfifo_request *req)
+{
+	unsigned long flags;
+
+	if (!lpbfifo.regs)
+		return -ENODEV;
+
+	spin_lock_irqsave(&lpbfifo.lock, flags);
+
+	/* If the req pointer is already set, then a transfer is in progress */
+	if (lpbfifo.req) {
+		spin_unlock_irqrestore(&lpbfifo.lock, flags);
+		return -EBUSY;
+	}
+
+	/* Setup the transfer */
+	lpbfifo.req = req;
+	req->irq_count = 0;
+	req->irq_ticks = 0;
+	req->buffer_not_done_cnt = 0;
+	req->pos = 0;
+
+	mpc52xx_lpbfifo_kick(req);
+	spin_unlock_irqrestore(&lpbfifo.lock, flags);
+	return 0;
+}
+EXPORT_SYMBOL(mpc52xx_lpbfifo_submit);
+
+void mpc52xx_lpbfifo_abort(struct mpc52xx_lpbfifo_request *req)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&lpbfifo.lock, flags);
+	if (lpbfifo.req == req) {
+		/* Put it into reset and clear the state */
+		bcom_gen_bd_rx_reset(lpbfifo.bcom_rx_task);
+		bcom_gen_bd_tx_reset(lpbfifo.bcom_tx_task);
+		out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000);
+		lpbfifo.req = NULL;
+	}
+	spin_unlock_irqrestore(&lpbfifo.lock, flags);
+}
+EXPORT_SYMBOL(mpc52xx_lpbfifo_abort);
+
+static int __devinit
+mpc52xx_lpbfifo_probe(struct of_device *op, const struct of_device_id *match)
+{
+	struct resource res;
+	int rc = -ENOMEM;
+
+	if (lpbfifo.dev != NULL)
+		return -ENOSPC;
+
+	lpbfifo.irq = irq_of_parse_and_map(op->node, 0);
+	if (!lpbfifo.irq)
+		return -ENODEV;
+
+	if (of_address_to_resource(op->node, 0, &res))
+		return -ENODEV;
+	lpbfifo.regs_phys = res.start;
+	lpbfifo.regs = of_iomap(op->node, 0);
+	if (!lpbfifo.regs)
+		return -ENOMEM;
+
+	spin_lock_init(&lpbfifo.lock);
+
+	/* Put FIFO into reset */
+	out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000);
+
+	/* Register the interrupt handler */
+	rc = request_irq(lpbfifo.irq, mpc52xx_lpbfifo_irq, 0,
+			 "mpc52xx-lpbfifo", &lpbfifo);
+	if (rc)
+		goto err_irq;
+
+	/* Request the Bestcomm receive (fifo --> memory) task and IRQ */
+	lpbfifo.bcom_rx_task =
+		bcom_gen_bd_rx_init(2, res.start + LPBFIFO_REG_FIFO_DATA,
+				    BCOM_INITIATOR_SCLPC, BCOM_IPR_SCLPC,
+				    16*1024*1024);
+	if (!lpbfifo.bcom_rx_task)
+		goto err_bcom_rx;
+
+	rc = request_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task),
+			 mpc52xx_lpbfifo_bcom_irq, 0,
+			 "mpc52xx-lpbfifo-rx", &lpbfifo);
+	if (rc)
+		goto err_bcom_rx_irq;
+
+	/* Request the Bestcomm transmit (memory --> fifo) task and IRQ */
+	lpbfifo.bcom_tx_task =
+		bcom_gen_bd_tx_init(2, res.start + LPBFIFO_REG_FIFO_DATA,
+				    BCOM_INITIATOR_SCLPC, BCOM_IPR_SCLPC);
+	if (!lpbfifo.bcom_tx_task)
+		goto err_bcom_tx;
+
+	lpbfifo.dev = &op->dev;
+	return 0;
+
+ err_bcom_tx:
+	free_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task), &lpbfifo);
+ err_bcom_rx_irq:
+	bcom_gen_bd_rx_release(lpbfifo.bcom_rx_task);
+ err_bcom_rx:
+ err_irq:
+	iounmap(lpbfifo.regs);
+	lpbfifo.regs = NULL;
+
+	dev_err(&op->dev, "mpc52xx_lpbfifo_probe() failed\n");
+	return -ENODEV;
+}
+
+
+static int __devexit mpc52xx_lpbfifo_remove(struct of_device *op)
+{
+	if (lpbfifo.dev != &op->dev)
+		return 0;
+
+	/* Put FIFO in reset */
+	out_be32(lpbfifo.regs + LPBFIFO_REG_ENABLE, 0x01010000);
+
+	/* Release the bestcomm transmit task */
+	free_irq(bcom_get_task_irq(lpbfifo.bcom_tx_task), &lpbfifo);
+	bcom_gen_bd_tx_release(lpbfifo.bcom_tx_task);
+	
+	/* Release the bestcomm receive task */
+	free_irq(bcom_get_task_irq(lpbfifo.bcom_rx_task), &lpbfifo);
+	bcom_gen_bd_rx_release(lpbfifo.bcom_rx_task);
+
+	free_irq(lpbfifo.irq, &lpbfifo);
+	iounmap(lpbfifo.regs);
+	lpbfifo.regs = NULL;
+	lpbfifo.dev = NULL;
+
+	return 0;
+}
+
+static struct of_device_id mpc52xx_lpbfifo_match[] __devinitconst = {
+	{ .compatible = "fsl,mpc5200-lpbfifo", },
+	{},
+};
+
+static struct of_platform_driver mpc52xx_lpbfifo_driver = {
+	.owner = THIS_MODULE,
+	.name = "mpc52xx-lpbfifo",
+	.match_table = mpc52xx_lpbfifo_match,
+	.probe = mpc52xx_lpbfifo_probe,
+	.remove = __devexit_p(mpc52xx_lpbfifo_remove),
+};
+
+/***********************************************************************
+ * Module init/exit
+ */
+static int __init mpc52xx_lpbfifo_init(void)
+{
+	pr_debug("Registering LocalPlus bus FIFO driver\n");
+	return of_register_platform_driver(&mpc52xx_lpbfifo_driver);
+}
+module_init(mpc52xx_lpbfifo_init);
+
+static void __exit mpc52xx_lpbfifo_exit(void)
+{
+	pr_debug("Unregistering LocalPlus bus FIFO driver\n");
+	of_unregister_platform_driver(&mpc52xx_lpbfifo_driver);
+}
+module_exit(mpc52xx_lpbfifo_exit);
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pci.c b/arch/powerpc/platforms/52xx/mpc52xx_pci.c
index dd43114e9684..da110bd88346 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pci.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pci.c
@@ -100,7 +100,7 @@ const struct of_device_id mpc52xx_pci_ids[] __initdata = {
 };
 
 /* ======================================================================== */
-/* PCI configuration acess                                                  */
+/* PCI configuration access                                                 */
 /* ======================================================================== */
 
 static int
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index 480f806fd0a9..4bf4bf7b063e 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -220,7 +220,7 @@ static int mpc52xx_extirq_set_type(unsigned int virq, unsigned int flow_type)
 }
 
 static struct irq_chip mpc52xx_extirq_irqchip = {
-	.typename = "MPC52xx External",
+	.name = "MPC52xx External",
 	.mask = mpc52xx_extirq_mask,
 	.unmask = mpc52xx_extirq_unmask,
 	.ack = mpc52xx_extirq_ack,
@@ -258,7 +258,7 @@ static void mpc52xx_main_unmask(unsigned int virq)
 }
 
 static struct irq_chip mpc52xx_main_irqchip = {
-	.typename = "MPC52xx Main",
+	.name = "MPC52xx Main",
 	.mask = mpc52xx_main_mask,
 	.mask_ack = mpc52xx_main_mask,
 	.unmask = mpc52xx_main_unmask,
@@ -291,7 +291,7 @@ static void mpc52xx_periph_unmask(unsigned int virq)
 }
 
 static struct irq_chip mpc52xx_periph_irqchip = {
-	.typename = "MPC52xx Peripherals",
+	.name = "MPC52xx Peripherals",
 	.mask = mpc52xx_periph_mask,
 	.mask_ack = mpc52xx_periph_mask,
 	.unmask = mpc52xx_periph_unmask,
@@ -335,7 +335,7 @@ static void mpc52xx_sdma_ack(unsigned int virq)
 }
 
 static struct irq_chip mpc52xx_sdma_irqchip = {
-	.typename = "MPC52xx SDMA",
+	.name = "MPC52xx SDMA",
 	.mask = mpc52xx_sdma_mask,
 	.unmask = mpc52xx_sdma_unmask,
 	.ack = mpc52xx_sdma_ack,
@@ -355,7 +355,7 @@ static int mpc52xx_is_extirq(int l1, int l2)
  * mpc52xx_irqhost_xlate - translate virq# from device tree interrupts property
  */
 static int mpc52xx_irqhost_xlate(struct irq_host *h, struct device_node *ct,
-				 u32 *intspec, unsigned int intsize,
+				 const u32 *intspec, unsigned int intsize,
 				 irq_hw_number_t *out_hwirq,
 				 unsigned int *out_flags)
 {
diff --git a/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c b/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
index 7ee979f323d1..9d962d7c72c1 100644
--- a/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
+++ b/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
@@ -69,7 +69,6 @@ static void pq2ads_pci_unmask_irq(unsigned int virq)
 }
 
 static struct irq_chip pq2ads_pci_ic = {
-	.typename = "PQ2 ADS PCI",
 	.name = "PQ2 ADS PCI",
 	.end = pq2ads_pci_unmask_irq,
 	.mask = pq2ads_pci_mask_irq,
@@ -107,7 +106,7 @@ static void pq2ads_pci_irq_demux(unsigned int irq, struct irq_desc *desc)
 static int pci_pic_host_map(struct irq_host *h, unsigned int virq,
 			    irq_hw_number_t hw)
 {
-	get_irq_desc(virq)->status |= IRQ_LEVEL;
+	irq_to_desc(virq)->status |= IRQ_LEVEL;
 	set_irq_chip_data(virq, h->host_data);
 	set_irq_chip_and_handler(virq, &pq2ads_pci_ic, handle_level_irq);
 	return 0;
diff --git a/arch/powerpc/platforms/83xx/mpc832x_rdb.c b/arch/powerpc/platforms/83xx/mpc832x_rdb.c
index 567ded7c3b9b..17f99745f0e4 100644
--- a/arch/powerpc/platforms/83xx/mpc832x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc832x_rdb.c
@@ -74,7 +74,7 @@ static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
 
 		prop = of_get_property(np, "mode", NULL);
 		if (prop && !strcmp(prop, "cpu-qe"))
-			pdata.qe_mode = 1;
+			pdata.flags = SPI_QE_CPU_MODE;
 
 		for (j = 0; j < num_board_infos; j++) {
 			if (board_infos[j].bus_num == pdata.bus_num)
diff --git a/arch/powerpc/platforms/83xx/suspend.c b/arch/powerpc/platforms/83xx/suspend.c
index 08e65fc8b98c..43805348b81e 100644
--- a/arch/powerpc/platforms/83xx/suspend.c
+++ b/arch/powerpc/platforms/83xx/suspend.c
@@ -32,6 +32,7 @@
 #define PMCCR1_NEXT_STATE       0x0C /* Next state for power management */
 #define PMCCR1_NEXT_STATE_SHIFT 2
 #define PMCCR1_CURR_STATE       0x03 /* Current state for power management*/
+#define IMMR_SYSCR_OFFSET       0x100
 #define IMMR_RCW_OFFSET         0x900
 #define RCW_PCI_HOST            0x80000000
 
@@ -78,6 +79,22 @@ struct mpc83xx_clock {
 	u32 sccr;
 };
 
+struct mpc83xx_syscr {
+	__be32 sgprl;
+	__be32 sgprh;
+	__be32 spridr;
+	__be32 :32;
+	__be32 spcr;
+	__be32 sicrl;
+	__be32 sicrh;
+};
+
+struct mpc83xx_saved {
+	u32 sicrl;
+	u32 sicrh;
+	u32 sccr;
+};
+
 struct pmc_type {
 	int has_deep_sleep;
 };
@@ -87,6 +104,8 @@ static int has_deep_sleep, deep_sleeping;
 static int pmc_irq;
 static struct mpc83xx_pmc __iomem *pmc_regs;
 static struct mpc83xx_clock __iomem *clock_regs;
+static struct mpc83xx_syscr __iomem *syscr_regs;
+static struct mpc83xx_saved saved_regs;
 static int is_pci_agent, wake_from_pci;
 static phys_addr_t immrbase;
 static int pci_pm_state;
@@ -96,6 +115,7 @@ int fsl_deep_sleep(void)
 {
 	return deep_sleeping;
 }
+EXPORT_SYMBOL(fsl_deep_sleep);
 
 static int mpc83xx_change_state(void)
 {
@@ -136,6 +156,20 @@ static irqreturn_t pmc_irq_handler(int irq, void *dev_id)
 	return ret;
 }
 
+static void mpc83xx_suspend_restore_regs(void)
+{
+	out_be32(&syscr_regs->sicrl, saved_regs.sicrl);
+	out_be32(&syscr_regs->sicrh, saved_regs.sicrh);
+	out_be32(&clock_regs->sccr, saved_regs.sccr);
+}
+
+static void mpc83xx_suspend_save_regs(void)
+{
+	saved_regs.sicrl = in_be32(&syscr_regs->sicrl);
+	saved_regs.sicrh = in_be32(&syscr_regs->sicrh);
+	saved_regs.sccr = in_be32(&clock_regs->sccr);
+}
+
 static int mpc83xx_suspend_enter(suspend_state_t state)
 {
 	int ret = -EAGAIN;
@@ -165,6 +199,8 @@ static int mpc83xx_suspend_enter(suspend_state_t state)
 	 */
 
 	if (deep_sleeping) {
+		mpc83xx_suspend_save_regs();
+
 		out_be32(&pmc_regs->mask, PMCER_ALL);
 
 		out_be32(&pmc_regs->config1,
@@ -178,6 +214,8 @@ static int mpc83xx_suspend_enter(suspend_state_t state)
 		         in_be32(&pmc_regs->config1) & ~PMCCR1_POWER_OFF);
 
 		out_be32(&pmc_regs->mask, PMCER_PMCI);
+
+		mpc83xx_suspend_restore_regs();
 	} else {
 		out_be32(&pmc_regs->mask, PMCER_PMCI);
 
@@ -193,7 +231,7 @@ out:
 	return ret;
 }
 
-static void mpc83xx_suspend_finish(void)
+static void mpc83xx_suspend_end(void)
 {
 	deep_sleeping = 0;
 }
@@ -277,7 +315,7 @@ static struct platform_suspend_ops mpc83xx_suspend_ops = {
 	.valid = mpc83xx_suspend_valid,
 	.begin = mpc83xx_suspend_begin,
 	.enter = mpc83xx_suspend_enter,
-	.finish = mpc83xx_suspend_finish,
+	.end = mpc83xx_suspend_end,
 };
 
 static int pmc_probe(struct of_device *ofdev,
@@ -332,12 +370,23 @@ static int pmc_probe(struct of_device *ofdev,
 		goto out_pmc;
 	}
 
+	if (has_deep_sleep) {
+		syscr_regs = ioremap(immrbase + IMMR_SYSCR_OFFSET,
+				     sizeof(*syscr_regs));
+		if (!syscr_regs) {
+			ret = -ENOMEM;
+			goto out_syscr;
+		}
+	}
+
 	if (is_pci_agent)
 		mpc83xx_set_agent();
 
 	suspend_set_ops(&mpc83xx_suspend_ops);
 	return 0;
 
+out_syscr:
+	iounmap(clock_regs);
 out_pmc:
 	iounmap(pmc_regs);
 out:
diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index d3a975e8fd3e..d95121894eb7 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -1,6 +1,7 @@
-menuconfig MPC85xx
-	bool "Machine Type"
-	depends on PPC_85xx
+menuconfig FSL_SOC_BOOKE
+	bool "Freescale Book-E Machine Type"
+	depends on PPC_85xx || PPC_BOOK3E
+	select FSL_SOC
 	select PPC_UDBG_16550
 	select MPIC
 	select PPC_PCI_CHOICE
@@ -8,7 +9,7 @@ menuconfig MPC85xx
 	select SERIAL_8250_SHARE_IRQ if SERIAL_8250
 	default y
 
-if MPC85xx
+if FSL_SOC_BOOKE
 
 config MPC8540_ADS
 	bool "Freescale MPC8540 ADS"
@@ -144,7 +145,19 @@ config SBC8560
 	help
 	  This option enables support for the Wind River SBC8560 board
 
-endif # MPC85xx
+config P4080_DS
+	bool "Freescale P4080 DS"
+	select DEFAULT_UIMAGE
+	select PPC_FSL_BOOK3E
+	select PPC_E500MC
+	select PHYS_64BIT
+	select SWIOTLB
+	select MPC8xxx_GPIO
+	select HAS_RAPIDIO
+	help
+	  This option enables support for the P4080 DS board
+
+endif # FSL_SOC_BOOKE
 
 config TQM85xx
 	bool
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index 9098aea0cf32..387c128f2c8c 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_MPC8536_DS)  += mpc8536_ds.o
 obj-$(CONFIG_MPC85xx_DS)  += mpc85xx_ds.o
 obj-$(CONFIG_MPC85xx_MDS) += mpc85xx_mds.o
 obj-$(CONFIG_MPC85xx_RDB) += mpc85xx_rdb.o
+obj-$(CONFIG_P4080_DS)    += p4080_ds.o corenet_ds.o
 obj-$(CONFIG_STX_GP3)	  += stx_gp3.o
 obj-$(CONFIG_TQM85xx)	  += tqm85xx.o
 obj-$(CONFIG_SBC8560)     += sbc8560.o
diff --git a/arch/powerpc/platforms/85xx/corenet_ds.c b/arch/powerpc/platforms/85xx/corenet_ds.c
new file mode 100644
index 000000000000..534c2ecc89d9
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/corenet_ds.c
@@ -0,0 +1,125 @@
+/*
+ * Corenet based SoC DS Setup
+ *
+ * Maintained by Kumar Gala (see MAINTAINERS for contact information)
+ *
+ * Copyright 2009 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/lmb.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <mm/mmu_decl.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/mpic.h>
+
+#include <linux/of_platform.h>
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+
+void __init corenet_ds_pic_init(void)
+{
+	struct mpic *mpic;
+	struct resource r;
+	struct device_node *np = NULL;
+	unsigned int flags = MPIC_PRIMARY | MPIC_BIG_ENDIAN |
+				MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU;
+
+	np = of_find_node_by_type(np, "open-pic");
+
+	if (np == NULL) {
+		printk(KERN_ERR "Could not find open-pic node\n");
+		return;
+	}
+
+	if (of_address_to_resource(np, 0, &r)) {
+		printk(KERN_ERR "Failed to map mpic register space\n");
+		of_node_put(np);
+		return;
+	}
+
+	if (ppc_md.get_irq == mpic_get_coreint_irq)
+		flags |= MPIC_ENABLE_COREINT;
+
+	mpic = mpic_alloc(np, r.start, flags, 0, 256, " OpenPIC  ");
+	BUG_ON(mpic == NULL);
+
+	mpic_init(mpic);
+}
+
+#ifdef CONFIG_PCI
+static int primary_phb_addr;
+#endif
+
+/*
+ * Setup the architecture
+ */
+#ifdef CONFIG_SMP
+void __init mpc85xx_smp_init(void);
+#endif
+
+void __init corenet_ds_setup_arch(void)
+{
+#ifdef CONFIG_PCI
+	struct device_node *np;
+	struct pci_controller *hose;
+#endif
+	dma_addr_t max = 0xffffffff;
+
+#ifdef CONFIG_SMP
+	mpc85xx_smp_init();
+#endif
+
+#ifdef CONFIG_PCI
+	for_each_compatible_node(np, "pci", "fsl,p4080-pcie") {
+		struct resource rsrc;
+		of_address_to_resource(np, 0, &rsrc);
+		if ((rsrc.start & 0xfffff) == primary_phb_addr)
+			fsl_add_bridge(np, 1);
+		else
+			fsl_add_bridge(np, 0);
+
+		hose = pci_find_hose_for_OF_device(np);
+		max = min(max, hose->dma_window_base_cur +
+				hose->dma_window_size);
+	}
+#endif
+
+#ifdef CONFIG_SWIOTLB
+	if (lmb_end_of_DRAM() > max) {
+		ppc_swiotlb_enable = 1;
+		set_pci_dma_ops(&swiotlb_dma_ops);
+		ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb;
+	}
+#endif
+	pr_info("%s board from Freescale Semiconductor\n", ppc_md.name);
+}
+
+static const struct of_device_id of_device_ids[] __devinitconst = {
+	{
+		.compatible	= "simple-bus"
+	},
+	{
+		.compatible	= "fsl,rapidio-delta",
+	},
+	{}
+};
+
+int __init corenet_ds_publish_devices(void)
+{
+	return of_platform_bus_probe(NULL, of_device_ids, NULL);
+}
diff --git a/arch/powerpc/platforms/85xx/corenet_ds.h b/arch/powerpc/platforms/85xx/corenet_ds.h
new file mode 100644
index 000000000000..ddd700b23031
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/corenet_ds.h
@@ -0,0 +1,19 @@
+/*
+ * Corenet based SoC DS Setup
+ *
+ * Copyright 2009 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef CORENET_DS_H
+#define CORENET_DS_H
+
+extern void __init corenet_ds_pic_init(void);
+extern void __init corenet_ds_setup_arch(void);
+extern int __init corenet_ds_publish_devices(void);
+
+#endif
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index 3909d57b86e3..21f61b8c445b 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
@@ -86,7 +86,7 @@ static int mpc8568_fixup_125_clock(struct phy_device *phydev)
 	scr = phy_read(phydev, MV88E1111_SCR);
 
 	if (scr < 0)
-		return err;
+		return scr;
 
 	err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008);
 
@@ -301,6 +301,7 @@ static struct of_device_id mpc85xx_ids[] = {
 	{ .compatible = "fsl,qe", },
 	{ .compatible = "gianfar", },
 	{ .compatible = "fsl,rapidio-delta", },
+	{ .compatible = "fsl,mpc8548-guts", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
index c8468de4acf6..088f30b0c088 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
@@ -44,6 +44,7 @@ void __init mpc85xx_rdb_pic_init(void)
 	struct mpic *mpic;
 	struct resource r;
 	struct device_node *np;
+	unsigned long root = of_get_flat_dt_root();
 
 	np = of_find_node_by_type(NULL, "open-pic");
 	if (np == NULL) {
@@ -57,11 +58,18 @@ void __init mpc85xx_rdb_pic_init(void)
 		return;
 	}
 
-	mpic = mpic_alloc(np, r.start,
+	if (of_flat_dt_is_compatible(root, "fsl,85XXRDB-CAMP")) {
+		mpic = mpic_alloc(np, r.start,
+			MPIC_PRIMARY |
+			MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS,
+			0, 256, " OpenPIC  ");
+	} else {
+		mpic = mpic_alloc(np, r.start,
 		  MPIC_PRIMARY | MPIC_WANTS_RESET |
 		  MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
 		  MPIC_SINGLE_DEST_CPU,
 		  0, 256, " OpenPIC  ");
+	}
 
 	BUG_ON(mpic == NULL);
 	of_node_put(np);
@@ -113,6 +121,7 @@ static int __init mpc85xxrdb_publish_devices(void)
 	return of_platform_bus_probe(NULL, mpc85xxrdb_ids, NULL);
 }
 machine_device_initcall(p2020_rdb, mpc85xxrdb_publish_devices);
+machine_device_initcall(p1020_rdb, mpc85xxrdb_publish_devices);
 
 /*
  * Called very early, device-tree isn't unflattened
@@ -126,6 +135,15 @@ static int __init p2020_rdb_probe(void)
 	return 0;
 }
 
+static int __init p1020_rdb_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (of_flat_dt_is_compatible(root, "fsl,P1020RDB"))
+		return 1;
+	return 0;
+}
+
 define_machine(p2020_rdb) {
 	.name			= "P2020 RDB",
 	.probe			= p2020_rdb_probe,
@@ -139,3 +157,17 @@ define_machine(p2020_rdb) {
 	.calibrate_decr		= generic_calibrate_decr,
 	.progress		= udbg_progress,
 };
+
+define_machine(p1020_rdb) {
+	.name			= "P1020 RDB",
+	.probe			= p1020_rdb_probe,
+	.setup_arch		= mpc85xx_rdb_setup_arch,
+	.init_IRQ		= mpc85xx_rdb_pic_init,
+#ifdef CONFIG_PCI
+	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
+#endif
+	.get_irq		= mpic_get_irq,
+	.restart		= fsl_rstcr_restart,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+};
diff --git a/arch/powerpc/platforms/85xx/p4080_ds.c b/arch/powerpc/platforms/85xx/p4080_ds.c
new file mode 100644
index 000000000000..84170460497b
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/p4080_ds.c
@@ -0,0 +1,74 @@
+/*
+ * P4080 DS Setup
+ *
+ * Maintained by Kumar Gala (see MAINTAINERS for contact information)
+ *
+ * Copyright 2009 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <mm/mmu_decl.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/mpic.h>
+
+#include <linux/of_platform.h>
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+
+#include "corenet_ds.h"
+
+#ifdef CONFIG_PCI
+static int primary_phb_addr;
+#endif
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init p4080_ds_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (of_flat_dt_is_compatible(root, "fsl,P4080DS")) {
+#ifdef CONFIG_PCI
+		/* treat PCIe1 as primary,
+		 * shouldn't matter as we have no ISA on the board
+		 */
+		primary_phb_addr = 0x0000;
+#endif
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+define_machine(p4080_ds) {
+	.name			= "P4080 DS",
+	.probe			= p4080_ds_probe,
+	.setup_arch		= corenet_ds_setup_arch,
+	.init_IRQ		= corenet_ds_pic_init,
+#ifdef CONFIG_PCI
+	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
+#endif
+	.get_irq		= mpic_get_coreint_irq,
+	.restart		= fsl_rstcr_restart,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+};
+
+machine_device_initcall(p4080_ds, corenet_ds_publish_devices);
+machine_arch_initcall(p4080_ds, swiotlb_setup_bus_notifier);
diff --git a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
index 60edf63d0157..e5da5f62b24a 100644
--- a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
+++ b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
@@ -232,7 +232,7 @@ static int socrates_fpga_pic_set_type(unsigned int virq,
 }
 
 static struct irq_chip socrates_fpga_pic_chip = {
-	.typename       = " FPGA-PIC ",
+	.name		= " FPGA-PIC ",
 	.ack		= socrates_fpga_pic_ack,
 	.mask           = socrates_fpga_pic_mask,
 	.mask_ack       = socrates_fpga_pic_mask_ack,
@@ -245,7 +245,7 @@ static int socrates_fpga_pic_host_map(struct irq_host *h, unsigned int virq,
 		irq_hw_number_t hwirq)
 {
 	/* All interrupts are LEVEL sensitive */
-	get_irq_desc(virq)->status |= IRQ_LEVEL;
+	irq_to_desc(virq)->status |= IRQ_LEVEL;
 	set_irq_chip_and_handler(virq, &socrates_fpga_pic_chip,
 			handle_fasteoi_irq);
 
@@ -253,7 +253,7 @@ static int socrates_fpga_pic_host_map(struct irq_host *h, unsigned int virq,
 }
 
 static int socrates_fpga_pic_host_xlate(struct irq_host *h,
-		struct device_node *ct,	u32 *intspec, unsigned int intsize,
+		struct device_node *ct,	const u32 *intspec, unsigned int intsize,
 		irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 {
 	struct socrates_fpga_irq_info *fpga_irq = &fpga_irqs[intspec[0]];
diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig
index 9c7b64a3402b..2bbfd530d6d8 100644
--- a/arch/powerpc/platforms/86xx/Kconfig
+++ b/arch/powerpc/platforms/86xx/Kconfig
@@ -35,6 +35,7 @@ config MPC8610_HPCD
 config GEF_PPC9A
 	bool "GE Fanuc PPC9A"
 	select DEFAULT_UIMAGE
+	select MMIO_NVRAM
 	select GENERIC_GPIO
 	select ARCH_REQUIRE_GPIOLIB
 	help
@@ -43,6 +44,7 @@ config GEF_PPC9A
 config GEF_SBC310
 	bool "GE Fanuc SBC310"
 	select DEFAULT_UIMAGE
+	select MMIO_NVRAM
 	select GENERIC_GPIO
 	select ARCH_REQUIRE_GPIOLIB
 	help
@@ -51,6 +53,7 @@ config GEF_SBC310
 config GEF_SBC610
 	bool "GE Fanuc SBC610"
 	select DEFAULT_UIMAGE
+	select MMIO_NVRAM
 	select GENERIC_GPIO
 	select ARCH_REQUIRE_GPIOLIB
 	select HAS_RAPIDIO
diff --git a/arch/powerpc/platforms/86xx/gef_pic.c b/arch/powerpc/platforms/86xx/gef_pic.c
index 50d0a2b63809..0110a8736d33 100644
--- a/arch/powerpc/platforms/86xx/gef_pic.c
+++ b/arch/powerpc/platforms/86xx/gef_pic.c
@@ -149,7 +149,7 @@ static void gef_pic_unmask(unsigned int virq)
 }
 
 static struct irq_chip gef_pic_chip = {
-	.typename	= "gefp",
+	.name		= "gefp",
 	.mask		= gef_pic_mask,
 	.mask_ack	= gef_pic_mask_ack,
 	.unmask		= gef_pic_unmask,
@@ -163,14 +163,14 @@ static int gef_pic_host_map(struct irq_host *h, unsigned int virq,
 			  irq_hw_number_t hwirq)
 {
 	/* All interrupts are LEVEL sensitive */
-	get_irq_desc(virq)->status |= IRQ_LEVEL;
+	irq_to_desc(virq)->status |= IRQ_LEVEL;
 	set_irq_chip_and_handler(virq, &gef_pic_chip, handle_level_irq);
 
 	return 0;
 }
 
 static int gef_pic_host_xlate(struct irq_host *h, struct device_node *ct,
-			    u32 *intspec, unsigned int intsize,
+			    const u32 *intspec, unsigned int intsize,
 			    irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 {
 
diff --git a/arch/powerpc/platforms/86xx/gef_ppc9a.c b/arch/powerpc/platforms/86xx/gef_ppc9a.c
index 287f7bd17dd9..a792e5d85813 100644
--- a/arch/powerpc/platforms/86xx/gef_ppc9a.c
+++ b/arch/powerpc/platforms/86xx/gef_ppc9a.c
@@ -33,6 +33,7 @@
 #include <asm/udbg.h>
 
 #include <asm/mpic.h>
+#include <asm/nvram.h>
 
 #include <sysdev/fsl_pci.h>
 #include <sysdev/fsl_soc.h>
@@ -95,6 +96,10 @@ static void __init gef_ppc9a_setup_arch(void)
 			printk(KERN_WARNING "Unable to map board registers\n");
 		of_node_put(regs);
 	}
+
+#if defined(CONFIG_MMIO_NVRAM)
+	mmio_nvram_init();
+#endif
 }
 
 /* Return the PCB revision */
diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c b/arch/powerpc/platforms/86xx/gef_sbc310.c
index 90754e752bd8..6a1a613836c2 100644
--- a/arch/powerpc/platforms/86xx/gef_sbc310.c
+++ b/arch/powerpc/platforms/86xx/gef_sbc310.c
@@ -33,6 +33,7 @@
 #include <asm/udbg.h>
 
 #include <asm/mpic.h>
+#include <asm/nvram.h>
 
 #include <sysdev/fsl_pci.h>
 #include <sysdev/fsl_soc.h>
@@ -95,6 +96,10 @@ static void __init gef_sbc310_setup_arch(void)
 			printk(KERN_WARNING "Unable to map board registers\n");
 		of_node_put(regs);
 	}
+
+#if defined(CONFIG_MMIO_NVRAM)
+	mmio_nvram_init();
+#endif
 }
 
 /* Return the PCB revision */
diff --git a/arch/powerpc/platforms/86xx/gef_sbc610.c b/arch/powerpc/platforms/86xx/gef_sbc610.c
index 72b31a6010a0..e10688a0fc4e 100644
--- a/arch/powerpc/platforms/86xx/gef_sbc610.c
+++ b/arch/powerpc/platforms/86xx/gef_sbc610.c
@@ -33,6 +33,7 @@
 #include <asm/udbg.h>
 
 #include <asm/mpic.h>
+#include <asm/nvram.h>
 
 #include <sysdev/fsl_pci.h>
 #include <sysdev/fsl_soc.h>
@@ -95,6 +96,10 @@ static void __init gef_sbc610_setup_arch(void)
 			printk(KERN_WARNING "Unable to map board registers\n");
 		of_node_put(regs);
 	}
+
+#if defined(CONFIG_MMIO_NVRAM)
+	mmio_nvram_init();
+#endif
 }
 
 /* Return the PCB revision */
diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
index 627908a4cd77..5abe137f6309 100644
--- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
+++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
@@ -19,6 +19,7 @@
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/interrupt.h>
 #include <linux/kdev_t.h>
 #include <linux/delay.h>
 #include <linux/seq_file.h>
@@ -41,10 +42,46 @@
 
 #include "mpc86xx.h"
 
+static struct device_node *pixis_node;
 static unsigned char *pixis_bdcfg0, *pixis_arch;
 
+#ifdef CONFIG_SUSPEND
+static irqreturn_t mpc8610_sw9_irq(int irq, void *data)
+{
+	pr_debug("%s: PIXIS' event (sw9/wakeup) IRQ handled\n", __func__);
+	return IRQ_HANDLED;
+}
+
+static void __init mpc8610_suspend_init(void)
+{
+	int irq;
+	int ret;
+
+	if (!pixis_node)
+		return;
+
+	irq = irq_of_parse_and_map(pixis_node, 0);
+	if (!irq) {
+		pr_err("%s: can't map pixis event IRQ.\n", __func__);
+		return;
+	}
+
+	ret = request_irq(irq, mpc8610_sw9_irq, 0, "sw9/wakeup", NULL);
+	if (ret) {
+		pr_err("%s: can't request pixis event IRQ: %d\n",
+		       __func__, ret);
+		irq_dispose_mapping(irq);
+	}
+
+	enable_irq_wake(irq);
+}
+#else
+static inline void mpc8610_suspend_init(void) { }
+#endif /* CONFIG_SUSPEND */
+
 static struct of_device_id __initdata mpc8610_ids[] = {
 	{ .compatible = "fsl,mpc8610-immr", },
+	{ .compatible = "fsl,mpc8610-guts", },
 	{ .compatible = "simple-bus", },
 	{ .compatible = "gianfar", },
 	{}
@@ -55,6 +92,9 @@ static int __init mpc8610_declare_of_platform_devices(void)
 	/* Firstly, register PIXIS GPIOs. */
 	simple_gpiochip_init("fsl,fpga-pixis-gpio-bank");
 
+	/* Enable wakeup on PIXIS' event IRQ. */
+	mpc8610_suspend_init();
+
 	/* Without this call, the SSI device driver won't get probed. */
 	of_platform_bus_probe(NULL, mpc8610_ids, NULL);
 
@@ -250,10 +290,10 @@ static void __init mpc86xx_hpcd_setup_arch(void)
 	diu_ops.set_sysfs_monitor_port	= mpc8610hpcd_set_sysfs_monitor_port;
 #endif
 
-	np = of_find_compatible_node(NULL, NULL, "fsl,fpga-pixis");
-	if (np) {
-		of_address_to_resource(np, 0, &r);
-		of_node_put(np);
+	pixis_node = of_find_compatible_node(NULL, NULL, "fsl,fpga-pixis");
+	if (pixis_node) {
+		of_address_to_resource(pixis_node, 0, &r);
+		of_node_put(pixis_node);
 		pixis = ioremap(r.start, 32);
 		if (!pixis) {
 			printk(KERN_ERR "Err: can't map FPGA cfg register!\n");
diff --git a/arch/powerpc/platforms/8xx/m8xx_setup.c b/arch/powerpc/platforms/8xx/m8xx_setup.c
index 385acfc48397..242954c4293f 100644
--- a/arch/powerpc/platforms/8xx/m8xx_setup.c
+++ b/arch/powerpc/platforms/8xx/m8xx_setup.c
@@ -222,7 +222,7 @@ static void cpm_cascade(unsigned int irq, struct irq_desc *desc)
 	int cascade_irq;
 
 	if ((cascade_irq = cpm_get_irq()) >= 0) {
-		struct irq_desc *cdesc = irq_desc + cascade_irq;
+		struct irq_desc *cdesc = irq_to_desc(cascade_irq);
 
 		generic_handle_irq(cascade_irq);
 		cdesc->chip->eoi(cascade_irq);
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 04a8061045c4..d1663db7810f 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -86,6 +86,11 @@ config RTAS_ERROR_LOGGING
 	depends on PPC_RTAS
 	default n
 
+config PPC_RTAS_DAEMON
+	bool
+	depends on PPC_RTAS
+	default n
+
 config RTAS_PROC
 	bool "Proc interface to RTAS"
 	depends on PPC_RTAS
@@ -255,7 +260,7 @@ config QE_GPIO
 
 config CPM2
 	bool "Enable support for the CPM2 (Communications Processor Module)"
-	depends on MPC85xx || 8260
+	depends on (FSL_SOC_BOOKE && PPC32) || 8260
 	select CPM
 	select PPC_LIB_RHEAP
 	select PPC_PCI_CHOICE
@@ -300,7 +305,7 @@ source "arch/powerpc/sysdev/bestcomm/Kconfig"
 
 config MPC8xxx_GPIO
 	bool "MPC8xxx GPIO support"
-	depends on PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || PPC_85xx || PPC_86xx
+	depends on PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || FSL_SOC_BOOKE || PPC_86xx
 	select GENERIC_GPIO
 	select ARCH_REQUIRE_GPIOLIB
 	help
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index e382cae678b8..fa0f690d3867 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -28,8 +28,6 @@ config PPC_BOOK3S_32
 config PPC_85xx
 	bool "Freescale 85xx"
 	select E500
-	select FSL_SOC
-	select MPC85xx
 
 config PPC_8xx
 	bool "Freescale 8xx"
@@ -138,6 +136,14 @@ config PPC_FPU
 	bool
 	default y if PPC64
 
+config FSL_EMB_PERFMON
+	bool "Freescale Embedded Perfmon"
+	depends on E500 || PPC_83xx
+	help
+	  This is the Performance Monitor support found on the e500 core
+	  and some e300 cores (c3 and c4).  Select this only if your
+	  core supports the Embedded Performance Monitor APU
+
 config 4xx
 	bool
 	depends on 40x || 44x
@@ -153,13 +159,6 @@ config FSL_BOOKE
 	depends on E200 || E500
 	default y
 
-config FSL_EMB_PERFMON
-	bool "Freescale Embedded Perfmon"
-	depends on E500 || PPC_83xx
-	help
-	  This is the Performance Monitor support found on the e500 core
-	  and some e300 cores (c3 and c4).  Select this only if your
-	  core supports the Embedded Performance Monitor APU
 
 config PTE_64BIT
 	bool
@@ -312,7 +311,7 @@ config NR_CPUS
 
 config NOT_COHERENT_CACHE
 	bool
-	depends on 4xx || 8xx || E200 || PPC_MPC512x
+	depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
 	default y
 
 config CHECK_CACHE_COHERENCY
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index a6812ee00100..fdb9f0b0d7a8 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -12,7 +12,7 @@ obj-$(CONFIG_PPC_MPC52xx)	+= 52xx/
 obj-$(CONFIG_PPC_8xx)		+= 8xx/
 obj-$(CONFIG_PPC_82xx)		+= 82xx/
 obj-$(CONFIG_PPC_83xx)		+= 83xx/
-obj-$(CONFIG_PPC_85xx)		+= 85xx/
+obj-$(CONFIG_FSL_SOC_BOOKE)	+= 85xx/
 obj-$(CONFIG_PPC_86xx)		+= 86xx/
 obj-$(CONFIG_PPC_PSERIES)	+= pseries/
 obj-$(CONFIG_PPC_ISERIES)	+= iseries/
diff --git a/arch/powerpc/platforms/amigaone/setup.c b/arch/powerpc/platforms/amigaone/setup.c
index 9290a7a442d0..fb4eb0df054c 100644
--- a/arch/powerpc/platforms/amigaone/setup.c
+++ b/arch/powerpc/platforms/amigaone/setup.c
@@ -14,7 +14,7 @@
 
 #include <linux/kernel.h>
 #include <linux/seq_file.h>
-#include <linux/utsrelease.h>
+#include <generated/utsrelease.h>
 
 #include <asm/machdep.h>
 #include <asm/cputable.h>
diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
index a86c34b3bb84..96fe896f6df3 100644
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -312,7 +312,7 @@ static struct irq_chip msic_irq_chip = {
 	.mask		= mask_msi_irq,
 	.unmask		= unmask_msi_irq,
 	.shutdown	= unmask_msi_irq,
-	.typename	= "AXON-MSI",
+	.name		= "AXON-MSI",
 };
 
 static int msic_host_map(struct irq_host *h, unsigned int virq,
diff --git a/arch/powerpc/platforms/cell/beat_interrupt.c b/arch/powerpc/platforms/cell/beat_interrupt.c
index 72254848a228..36052a9ebcda 100644
--- a/arch/powerpc/platforms/cell/beat_interrupt.c
+++ b/arch/powerpc/platforms/cell/beat_interrupt.c
@@ -110,7 +110,7 @@ static void beatic_end_irq(unsigned int irq_plug)
 }
 
 static struct irq_chip beatic_pic = {
-	.typename = " CELL-BEAT ",
+	.name = " CELL-BEAT ",
 	.unmask = beatic_unmask_irq,
 	.mask = beatic_mask_irq,
 	.eoi = beatic_end_irq,
@@ -136,7 +136,7 @@ static void beatic_pic_host_unmap(struct irq_host *h, unsigned int virq)
 static int beatic_pic_host_map(struct irq_host *h, unsigned int virq,
 			       irq_hw_number_t hw)
 {
-	struct irq_desc *desc = get_irq_desc(virq);
+	struct irq_desc *desc = irq_to_desc(virq);
 	int64_t	err;
 
 	err = beat_construct_and_connect_irq_plug(virq, hw);
@@ -166,11 +166,11 @@ static void beatic_pic_host_remap(struct irq_host *h, unsigned int virq,
  * Note: We have only 1 entry to translate.
  */
 static int beatic_pic_host_xlate(struct irq_host *h, struct device_node *ct,
-				 u32 *intspec, unsigned int intsize,
+				 const u32 *intspec, unsigned int intsize,
 				 irq_hw_number_t *out_hwirq,
 				 unsigned int *out_flags)
 {
-	u64 *intspec2 = (u64 *)intspec;
+	const u64 *intspec2 = (const u64 *)intspec;
 
 	*out_hwirq = *intspec2;
 	*out_flags |= IRQ_TYPE_LEVEL_LOW;
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 882e47080e74..6829cf7e2bda 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -54,7 +54,7 @@ struct iic {
 	struct device_node *node;
 };
 
-static DEFINE_PER_CPU(struct iic, iic);
+static DEFINE_PER_CPU(struct iic, cpu_iic);
 #define IIC_NODE_COUNT	2
 static struct irq_host *iic_host;
 
@@ -82,13 +82,13 @@ static void iic_unmask(unsigned int irq)
 
 static void iic_eoi(unsigned int irq)
 {
-	struct iic *iic = &__get_cpu_var(iic);
+	struct iic *iic = &__get_cpu_var(cpu_iic);
 	out_be64(&iic->regs->prio, iic->eoi_stack[--iic->eoi_ptr]);
 	BUG_ON(iic->eoi_ptr < 0);
 }
 
 static struct irq_chip iic_chip = {
-	.typename = " CELL-IIC ",
+	.name = " CELL-IIC ",
 	.mask = iic_mask,
 	.unmask = iic_unmask,
 	.eoi = iic_eoi,
@@ -133,7 +133,7 @@ static void iic_ioexc_cascade(unsigned int irq, struct irq_desc *desc)
 
 
 static struct irq_chip iic_ioexc_chip = {
-	.typename = " CELL-IOEX",
+	.name = " CELL-IOEX",
 	.mask = iic_mask,
 	.unmask = iic_unmask,
 	.eoi = iic_ioexc_eoi,
@@ -146,7 +146,7 @@ static unsigned int iic_get_irq(void)
 	struct iic *iic;
 	unsigned int virq;
 
-	iic = &__get_cpu_var(iic);
+	iic = &__get_cpu_var(cpu_iic);
 	*(unsigned long *) &pending =
 		in_be64((u64 __iomem *) &iic->regs->pending_destr);
 	if (!(pending.flags & CBE_IIC_IRQ_VALID))
@@ -161,12 +161,12 @@ static unsigned int iic_get_irq(void)
 
 void iic_setup_cpu(void)
 {
-	out_be64(&__get_cpu_var(iic).regs->prio, 0xff);
+	out_be64(&__get_cpu_var(cpu_iic).regs->prio, 0xff);
 }
 
 u8 iic_get_target_id(int cpu)
 {
-	return per_cpu(iic, cpu).target_id;
+	return per_cpu(cpu_iic, cpu).target_id;
 }
 
 EXPORT_SYMBOL_GPL(iic_get_target_id);
@@ -181,7 +181,7 @@ static inline int iic_ipi_to_irq(int ipi)
 
 void iic_cause_IPI(int cpu, int mesg)
 {
-	out_be64(&per_cpu(iic, cpu).regs->generate, (0xf - mesg) << 4);
+	out_be64(&per_cpu(cpu_iic, cpu).regs->generate, (0xf - mesg) << 4);
 }
 
 struct irq_host *iic_get_irq_host(int node)
@@ -237,7 +237,7 @@ extern int noirqdebug;
 
 static void handle_iic_irq(unsigned int irq, struct irq_desc *desc)
 {
-	spin_lock(&desc->lock);
+	raw_spin_lock(&desc->lock);
 
 	desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
 
@@ -265,18 +265,18 @@ static void handle_iic_irq(unsigned int irq, struct irq_desc *desc)
 			goto out_eoi;
 
 		desc->status &= ~IRQ_PENDING;
-		spin_unlock(&desc->lock);
+		raw_spin_unlock(&desc->lock);
 		action_ret = handle_IRQ_event(irq, action);
 		if (!noirqdebug)
 			note_interrupt(irq, desc, action_ret);
-		spin_lock(&desc->lock);
+		raw_spin_lock(&desc->lock);
 
 	} while ((desc->status & (IRQ_PENDING | IRQ_DISABLED)) == IRQ_PENDING);
 
 	desc->status &= ~IRQ_INPROGRESS;
 out_eoi:
 	desc->chip->eoi(irq);
-	spin_unlock(&desc->lock);
+	raw_spin_unlock(&desc->lock);
 }
 
 static int iic_host_map(struct irq_host *h, unsigned int virq,
@@ -297,7 +297,7 @@ static int iic_host_map(struct irq_host *h, unsigned int virq,
 }
 
 static int iic_host_xlate(struct irq_host *h, struct device_node *ct,
-			   u32 *intspec, unsigned int intsize,
+			   const u32 *intspec, unsigned int intsize,
 			   irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 
 {
@@ -348,7 +348,7 @@ static void __init init_one_iic(unsigned int hw_cpu, unsigned long addr,
 	/* XXX FIXME: should locate the linux CPU number from the HW cpu
 	 * number properly. We are lucky for now
 	 */
-	struct iic *iic = &per_cpu(iic, hw_cpu);
+	struct iic *iic = &per_cpu(cpu_iic, hw_cpu);
 
 	iic->regs = ioremap(addr, sizeof(struct cbe_iic_thread_regs));
 	BUG_ON(iic->regs == NULL);
diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c
index 4e5655624ae8..01244f254a11 100644
--- a/arch/powerpc/platforms/cell/spider-pic.c
+++ b/arch/powerpc/platforms/cell/spider-pic.c
@@ -102,7 +102,7 @@ static void spider_ack_irq(unsigned int virq)
 
 	/* Reset edge detection logic if necessary
 	 */
-	if (get_irq_desc(virq)->status & IRQ_LEVEL)
+	if (irq_to_desc(virq)->status & IRQ_LEVEL)
 		return;
 
 	/* Only interrupts 47 to 50 can be set to edge */
@@ -119,7 +119,7 @@ static int spider_set_irq_type(unsigned int virq, unsigned int type)
 	struct spider_pic *pic = spider_virq_to_pic(virq);
 	unsigned int hw = irq_map[virq].hwirq;
 	void __iomem *cfg = spider_get_irq_config(pic, hw);
-	struct irq_desc *desc = get_irq_desc(virq);
+	struct irq_desc *desc = irq_to_desc(virq);
 	u32 old_mask;
 	u32 ic;
 
@@ -168,7 +168,7 @@ static int spider_set_irq_type(unsigned int virq, unsigned int type)
 }
 
 static struct irq_chip spider_pic = {
-	.typename = " SPIDER   ",
+	.name = " SPIDER   ",
 	.unmask = spider_unmask_irq,
 	.mask = spider_mask_irq,
 	.ack = spider_ack_irq,
@@ -187,7 +187,7 @@ static int spider_host_map(struct irq_host *h, unsigned int virq,
 }
 
 static int spider_host_xlate(struct irq_host *h, struct device_node *ct,
-			   u32 *intspec, unsigned int intsize,
+			   const u32 *intspec, unsigned int intsize,
 			   irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 
 {
diff --git a/arch/powerpc/platforms/cell/spufs/Makefile b/arch/powerpc/platforms/cell/spufs/Makefile
index b93f877ba504..b9d5d678aa44 100644
--- a/arch/powerpc/platforms/cell/spufs/Makefile
+++ b/arch/powerpc/platforms/cell/spufs/Makefile
@@ -13,10 +13,8 @@ SPU_CC		:= $(SPU_CROSS)gcc
 SPU_AS		:= $(SPU_CROSS)gcc
 SPU_LD		:= $(SPU_CROSS)ld
 SPU_OBJCOPY	:= $(SPU_CROSS)objcopy
-SPU_CFLAGS	:= -O2 -Wall -I$(srctree)/include \
-		   -I$(objtree)/include2 -D__KERNEL__
-SPU_AFLAGS	:= -c -D__ASSEMBLY__ -I$(srctree)/include \
-		   -I$(objtree)/include2 -D__KERNEL__
+SPU_CFLAGS	:= -O2 -Wall -I$(srctree)/include -D__KERNEL__
+SPU_AFLAGS	:= -c -D__ASSEMBLY__ -I$(srctree)/include -D__KERNEL__
 SPU_LDFLAGS	:= -N -Ttext=0x0
 
 $(obj)/switch.o: $(obj)/spu_save_dump.h $(obj)/spu_restore_dump.h
diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c
index c4d4a19235e0..eea120229cdb 100644
--- a/arch/powerpc/platforms/cell/spufs/coredump.c
+++ b/arch/powerpc/platforms/cell/spufs/coredump.c
@@ -54,7 +54,7 @@ static ssize_t do_coredump_read(int num, struct spu_context *ctx, void *buffer,
  */
 static int spufs_dump_write(struct file *file, const void *addr, int nr, loff_t *foffset)
 {
-	unsigned long limit = current->signal->rlim[RLIMIT_CORE].rlim_cur;
+	unsigned long limit = rlimit(RLIMIT_CORE);
 	ssize_t written;
 
 	if (*foffset + nr > limit)
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 884e8bcec499..64a4c2d85f7c 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -2494,7 +2494,7 @@ static ssize_t spufs_switch_log_read(struct file *file, char __user *buf,
 	struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
 	int error = 0, cnt = 0;
 
-	if (!buf || len < 0)
+	if (!buf)
 		return -EINVAL;
 
 	error = spu_acquire(ctx);
diff --git a/arch/powerpc/platforms/chrp/Kconfig b/arch/powerpc/platforms/chrp/Kconfig
index 37d438bd5b7a..bc0b0efdc5fe 100644
--- a/arch/powerpc/platforms/chrp/Kconfig
+++ b/arch/powerpc/platforms/chrp/Kconfig
@@ -5,6 +5,8 @@ config PPC_CHRP
 	select PPC_I8259
 	select PPC_INDIRECT_PCI
 	select PPC_RTAS
+	select PPC_RTAS_DAEMON
+	select RTAS_ERROR_LOGGING
 	select PPC_MPC106
 	select PPC_UDBG_16550
 	select PPC_NATIVE
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index cd4ad9aea760..8f41685d8f42 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -23,7 +23,7 @@
 #include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/pci.h>
-#include <linux/utsrelease.h>
+#include <generated/utsrelease.h>
 #include <linux/adb.h>
 #include <linux/module.h>
 #include <linux/delay.h>
@@ -364,19 +364,6 @@ void __init chrp_setup_arch(void)
 	if (ppc_md.progress) ppc_md.progress("Linux/PPC "UTS_RELEASE"\n", 0x0);
 }
 
-void
-chrp_event_scan(unsigned long unused)
-{
-	unsigned char log[1024];
-	int ret = 0;
-
-	/* XXX: we should loop until the hardware says no more error logs -- Cort */
-	rtas_call(rtas_token("event-scan"), 4, 1, &ret, 0xffffffff, 0,
-		  __pa(log), 1024);
-	mod_timer(&__get_cpu_var(heartbeat_timer),
-		  jiffies + event_scan_interval);
-}
-
 static void chrp_8259_cascade(unsigned int irq, struct irq_desc *desc)
 {
 	unsigned int cascade_irq = i8259_irq();
@@ -568,9 +555,6 @@ void __init chrp_init_IRQ(void)
 void __init
 chrp_init2(void)
 {
-	struct device_node *device;
-	const unsigned int *p = NULL;
-
 #ifdef CONFIG_NVRAM
 	chrp_nvram_init();
 #endif
@@ -582,40 +566,6 @@ chrp_init2(void)
 	request_region(0x80,0x10,"dma page reg");
 	request_region(0xc0,0x20,"dma2");
 
-	/* Get the event scan rate for the rtas so we know how
-	 * often it expects a heartbeat. -- Cort
-	 */
-	device = of_find_node_by_name(NULL, "rtas");
-	if (device)
-		p = of_get_property(device, "rtas-event-scan-rate", NULL);
-	if (p && *p) {
-		/*
-		 * Arrange to call chrp_event_scan at least *p times
-		 * per minute.  We use 59 rather than 60 here so that
-		 * the rate will be slightly higher than the minimum.
-		 * This all assumes we don't do hotplug CPU on any
-		 * machine that needs the event scans done.
-		 */
-		unsigned long interval, offset;
-		int cpu, ncpus;
-		struct timer_list *timer;
-
-		interval = HZ * 59 / *p;
-		offset = HZ;
-		ncpus = num_online_cpus();
-		event_scan_interval = ncpus * interval;
-		for (cpu = 0; cpu < ncpus; ++cpu) {
-			timer = &per_cpu(heartbeat_timer, cpu);
-			setup_timer(timer, chrp_event_scan, 0);
-			timer->expires = jiffies + offset;
-			add_timer_on(timer, cpu);
-			offset += interval;
-		}
-		printk("RTAS Event Scan Rate: %u (%lu jiffies)\n",
-		       *p, interval);
-	}
-	of_node_put(device);
-
 	if (ppc_md.progress)
 		ppc_md.progress("  Have fun!    ", 0x7777);
 }
diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 291ac9d8cbee..524d971a1478 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -90,3 +90,36 @@ config MPC10X_OPENPIC
 config MPC10X_STORE_GATHERING
 	bool "Enable MPC10x store gathering"
 	depends on MPC10X_BRIDGE
+
+config GAMECUBE_COMMON
+	bool
+
+config USBGECKO_UDBG
+	bool "USB Gecko udbg console for the Nintendo GameCube/Wii"
+	depends on GAMECUBE_COMMON
+	help
+	  If you say yes to this option, support will be included for the
+	  USB Gecko adapter as an udbg console.
+	  The USB Gecko is a EXI to USB Serial converter that can be plugged
+	  into a memcard slot in the Nintendo GameCube/Wii.
+
+	  This driver bypasses the EXI layer completely.
+
+	  If in doubt, say N here.
+
+config GAMECUBE
+	bool "Nintendo-GameCube"
+	depends on EMBEDDED6xx
+	select GAMECUBE_COMMON
+	help
+	  Select GAMECUBE if configuring for the Nintendo GameCube.
+	  More information at: <http://gc-linux.sourceforge.net/>
+
+config WII
+	bool "Nintendo-Wii"
+	depends on EMBEDDED6xx
+	select GAMECUBE_COMMON
+	help
+	  Select WII if configuring for the Nintendo Wii.
+	  More information at: <http://gc-linux.sourceforge.net/>
+
diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/powerpc/platforms/embedded6xx/Makefile
index 0773c08bd444..66c23e423f40 100644
--- a/arch/powerpc/platforms/embedded6xx/Makefile
+++ b/arch/powerpc/platforms/embedded6xx/Makefile
@@ -7,3 +7,7 @@ obj-$(CONFIG_STORCENTER)	+= storcenter.o
 obj-$(CONFIG_PPC_HOLLY)		+= holly.o
 obj-$(CONFIG_PPC_PRPMC2800)	+= prpmc2800.o
 obj-$(CONFIG_PPC_C2K)		+= c2k.o
+obj-$(CONFIG_USBGECKO_UDBG)	+= usbgecko_udbg.o
+obj-$(CONFIG_GAMECUBE_COMMON)	+= flipper-pic.o
+obj-$(CONFIG_GAMECUBE)		+= gamecube.o
+obj-$(CONFIG_WII)		+= wii.o hlwd-pic.o
diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.c b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
new file mode 100644
index 000000000000..c278bd3a8fec
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
@@ -0,0 +1,263 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/flipper-pic.c
+ *
+ * Nintendo GameCube/Wii "Flipper" interrupt controller support.
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+#define DRV_MODULE_NAME "flipper-pic"
+#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/of.h>
+#include <asm/io.h>
+
+#include "flipper-pic.h"
+
+#define FLIPPER_NR_IRQS		32
+
+/*
+ * Each interrupt has a corresponding bit in both
+ * the Interrupt Cause (ICR) and Interrupt Mask (IMR) registers.
+ *
+ * Enabling/disabling an interrupt line involves setting/clearing
+ * the corresponding bit in IMR.
+ * Except for the RSW interrupt, all interrupts get deasserted automatically
+ * when the source deasserts the interrupt.
+ */
+#define FLIPPER_ICR		0x00
+#define FLIPPER_ICR_RSS		(1<<16) /* reset switch state */
+
+#define FLIPPER_IMR		0x04
+
+#define FLIPPER_RESET		0x24
+
+
+/*
+ * IRQ chip hooks.
+ *
+ */
+
+static void flipper_pic_mask_and_ack(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+	u32 mask = 1 << irq;
+
+	clrbits32(io_base + FLIPPER_IMR, mask);
+	/* this is at least needed for RSW */
+	out_be32(io_base + FLIPPER_ICR, mask);
+}
+
+static void flipper_pic_ack(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	/* this is at least needed for RSW */
+	out_be32(io_base + FLIPPER_ICR, 1 << irq);
+}
+
+static void flipper_pic_mask(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	clrbits32(io_base + FLIPPER_IMR, 1 << irq);
+}
+
+static void flipper_pic_unmask(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	setbits32(io_base + FLIPPER_IMR, 1 << irq);
+}
+
+
+static struct irq_chip flipper_pic = {
+	.name		= "flipper-pic",
+	.ack		= flipper_pic_ack,
+	.mask_ack	= flipper_pic_mask_and_ack,
+	.mask		= flipper_pic_mask,
+	.unmask		= flipper_pic_unmask,
+};
+
+/*
+ * IRQ host hooks.
+ *
+ */
+
+static struct irq_host *flipper_irq_host;
+
+static int flipper_pic_map(struct irq_host *h, unsigned int virq,
+			   irq_hw_number_t hwirq)
+{
+	set_irq_chip_data(virq, h->host_data);
+	irq_to_desc(virq)->status |= IRQ_LEVEL;
+	set_irq_chip_and_handler(virq, &flipper_pic, handle_level_irq);
+	return 0;
+}
+
+static void flipper_pic_unmap(struct irq_host *h, unsigned int irq)
+{
+	set_irq_chip_data(irq, NULL);
+	set_irq_chip(irq, NULL);
+}
+
+static int flipper_pic_match(struct irq_host *h, struct device_node *np)
+{
+	return 1;
+}
+
+
+static struct irq_host_ops flipper_irq_host_ops = {
+	.map = flipper_pic_map,
+	.unmap = flipper_pic_unmap,
+	.match = flipper_pic_match,
+};
+
+/*
+ * Platform hooks.
+ *
+ */
+
+static void __flipper_quiesce(void __iomem *io_base)
+{
+	/* mask and ack all IRQs */
+	out_be32(io_base + FLIPPER_IMR, 0x00000000);
+	out_be32(io_base + FLIPPER_ICR, 0xffffffff);
+}
+
+struct irq_host * __init flipper_pic_init(struct device_node *np)
+{
+	struct device_node *pi;
+	struct irq_host *irq_host = NULL;
+	struct resource res;
+	void __iomem *io_base;
+	int retval;
+
+	pi = of_get_parent(np);
+	if (!pi) {
+		pr_err("no parent found\n");
+		goto out;
+	}
+	if (!of_device_is_compatible(pi, "nintendo,flipper-pi")) {
+		pr_err("unexpected parent compatible\n");
+		goto out;
+	}
+
+	retval = of_address_to_resource(pi, 0, &res);
+	if (retval) {
+		pr_err("no io memory range found\n");
+		goto out;
+	}
+	io_base = ioremap(res.start, resource_size(&res));
+
+	pr_info("controller at 0x%08x mapped to 0x%p\n", res.start, io_base);
+
+	__flipper_quiesce(io_base);
+
+	irq_host = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, FLIPPER_NR_IRQS,
+				  &flipper_irq_host_ops, -1);
+	if (!irq_host) {
+		pr_err("failed to allocate irq_host\n");
+		return NULL;
+	}
+
+	irq_host->host_data = io_base;
+
+out:
+	return irq_host;
+}
+
+unsigned int flipper_pic_get_irq(void)
+{
+	void __iomem *io_base = flipper_irq_host->host_data;
+	int irq;
+	u32 irq_status;
+
+	irq_status = in_be32(io_base + FLIPPER_ICR) &
+		     in_be32(io_base + FLIPPER_IMR);
+	if (irq_status == 0)
+		return NO_IRQ;	/* no more IRQs pending */
+
+	irq = __ffs(irq_status);
+	return irq_linear_revmap(flipper_irq_host, irq);
+}
+
+/*
+ * Probe function.
+ *
+ */
+
+void __init flipper_pic_probe(void)
+{
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-pic");
+	BUG_ON(!np);
+
+	flipper_irq_host = flipper_pic_init(np);
+	BUG_ON(!flipper_irq_host);
+
+	irq_set_default_host(flipper_irq_host);
+
+	of_node_put(np);
+}
+
+/*
+ * Misc functions related to the flipper chipset.
+ *
+ */
+
+/**
+ * flipper_quiesce() - quiesce flipper irq controller
+ *
+ * Mask and ack all interrupt sources.
+ *
+ */
+void flipper_quiesce(void)
+{
+	void __iomem *io_base = flipper_irq_host->host_data;
+
+	__flipper_quiesce(io_base);
+}
+
+/*
+ * Resets the platform.
+ */
+void flipper_platform_reset(void)
+{
+	void __iomem *io_base;
+
+	if (flipper_irq_host && flipper_irq_host->host_data) {
+		io_base = flipper_irq_host->host_data;
+		out_8(io_base + FLIPPER_RESET, 0x00);
+	}
+}
+
+/*
+ * Returns non-zero if the reset button is pressed.
+ */
+int flipper_is_reset_button_pressed(void)
+{
+	void __iomem *io_base;
+	u32 icr;
+
+	if (flipper_irq_host && flipper_irq_host->host_data) {
+		io_base = flipper_irq_host->host_data;
+		icr = in_be32(io_base + FLIPPER_ICR);
+		return !(icr & FLIPPER_ICR_RSS);
+	}
+	return 0;
+}
+
diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.h b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
new file mode 100644
index 000000000000..e339186b5663
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
@@ -0,0 +1,25 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/flipper-pic.h
+ *
+ * Nintendo GameCube/Wii "Flipper" interrupt controller support.
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+
+#ifndef __FLIPPER_PIC_H
+#define __FLIPPER_PIC_H
+
+unsigned int flipper_pic_get_irq(void);
+void __init flipper_pic_probe(void);
+
+void flipper_quiesce(void);
+void flipper_platform_reset(void);
+int flipper_is_reset_button_pressed(void);
+
+#endif
diff --git a/arch/powerpc/platforms/embedded6xx/gamecube.c b/arch/powerpc/platforms/embedded6xx/gamecube.c
new file mode 100644
index 000000000000..1106fd99627f
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/gamecube.c
@@ -0,0 +1,118 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/gamecube.c
+ *
+ * Nintendo GameCube board-specific support
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/kexec.h>
+#include <linux/seq_file.h>
+#include <linux/of_platform.h>
+
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+
+#include "flipper-pic.h"
+#include "usbgecko_udbg.h"
+
+
+static void gamecube_spin(void)
+{
+	/* spin until power button pressed */
+	for (;;)
+		cpu_relax();
+}
+
+static void gamecube_restart(char *cmd)
+{
+	local_irq_disable();
+	flipper_platform_reset();
+	gamecube_spin();
+}
+
+static void gamecube_power_off(void)
+{
+	local_irq_disable();
+	gamecube_spin();
+}
+
+static void gamecube_halt(void)
+{
+	gamecube_restart(NULL);
+}
+
+static void __init gamecube_init_early(void)
+{
+	ug_udbg_init();
+}
+
+static int __init gamecube_probe(void)
+{
+	unsigned long dt_root;
+
+	dt_root = of_get_flat_dt_root();
+	if (!of_flat_dt_is_compatible(dt_root, "nintendo,gamecube"))
+		return 0;
+
+	return 1;
+}
+
+static void gamecube_shutdown(void)
+{
+	flipper_quiesce();
+}
+
+#ifdef CONFIG_KEXEC
+static int gamecube_kexec_prepare(struct kimage *image)
+{
+	return 0;
+}
+#endif /* CONFIG_KEXEC */
+
+
+define_machine(gamecube) {
+	.name			= "gamecube",
+	.probe			= gamecube_probe,
+	.init_early		= gamecube_init_early,
+	.restart		= gamecube_restart,
+	.power_off		= gamecube_power_off,
+	.halt			= gamecube_halt,
+	.init_IRQ		= flipper_pic_probe,
+	.get_irq		= flipper_pic_get_irq,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+	.machine_shutdown	= gamecube_shutdown,
+#ifdef CONFIG_KEXEC
+	.machine_kexec_prepare	= gamecube_kexec_prepare,
+#endif
+};
+
+
+static struct of_device_id gamecube_of_bus[] = {
+	{ .compatible = "nintendo,flipper", },
+	{ },
+};
+
+static int __init gamecube_device_probe(void)
+{
+	if (!machine_is(gamecube))
+		return 0;
+
+	of_platform_bus_probe(NULL, gamecube_of_bus, NULL);
+	return 0;
+}
+device_initcall(gamecube_device_probe);
+
diff --git a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
new file mode 100644
index 000000000000..a771f91e215b
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
@@ -0,0 +1,241 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/hlwd-pic.c
+ *
+ * Nintendo Wii "Hollywood" interrupt controller support.
+ * Copyright (C) 2009 The GameCube Linux Team
+ * Copyright (C) 2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+#define DRV_MODULE_NAME "hlwd-pic"
+#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/of.h>
+#include <asm/io.h>
+
+#include "hlwd-pic.h"
+
+#define HLWD_NR_IRQS	32
+
+/*
+ * Each interrupt has a corresponding bit in both
+ * the Interrupt Cause (ICR) and Interrupt Mask (IMR) registers.
+ *
+ * Enabling/disabling an interrupt line involves asserting/clearing
+ * the corresponding bit in IMR. ACK'ing a request simply involves
+ * asserting the corresponding bit in ICR.
+ */
+#define HW_BROADWAY_ICR		0x00
+#define HW_BROADWAY_IMR		0x04
+
+
+/*
+ * IRQ chip hooks.
+ *
+ */
+
+static void hlwd_pic_mask_and_ack(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+	u32 mask = 1 << irq;
+
+	clrbits32(io_base + HW_BROADWAY_IMR, mask);
+	out_be32(io_base + HW_BROADWAY_ICR, mask);
+}
+
+static void hlwd_pic_ack(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	out_be32(io_base + HW_BROADWAY_ICR, 1 << irq);
+}
+
+static void hlwd_pic_mask(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	clrbits32(io_base + HW_BROADWAY_IMR, 1 << irq);
+}
+
+static void hlwd_pic_unmask(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	setbits32(io_base + HW_BROADWAY_IMR, 1 << irq);
+}
+
+
+static struct irq_chip hlwd_pic = {
+	.name		= "hlwd-pic",
+	.ack		= hlwd_pic_ack,
+	.mask_ack	= hlwd_pic_mask_and_ack,
+	.mask		= hlwd_pic_mask,
+	.unmask		= hlwd_pic_unmask,
+};
+
+/*
+ * IRQ host hooks.
+ *
+ */
+
+static struct irq_host *hlwd_irq_host;
+
+static int hlwd_pic_map(struct irq_host *h, unsigned int virq,
+			   irq_hw_number_t hwirq)
+{
+	set_irq_chip_data(virq, h->host_data);
+	irq_to_desc(virq)->status |= IRQ_LEVEL;
+	set_irq_chip_and_handler(virq, &hlwd_pic, handle_level_irq);
+	return 0;
+}
+
+static void hlwd_pic_unmap(struct irq_host *h, unsigned int irq)
+{
+	set_irq_chip_data(irq, NULL);
+	set_irq_chip(irq, NULL);
+}
+
+static struct irq_host_ops hlwd_irq_host_ops = {
+	.map = hlwd_pic_map,
+	.unmap = hlwd_pic_unmap,
+};
+
+static unsigned int __hlwd_pic_get_irq(struct irq_host *h)
+{
+	void __iomem *io_base = h->host_data;
+	int irq;
+	u32 irq_status;
+
+	irq_status = in_be32(io_base + HW_BROADWAY_ICR) &
+		     in_be32(io_base + HW_BROADWAY_IMR);
+	if (irq_status == 0)
+		return NO_IRQ;	/* no more IRQs pending */
+
+	irq = __ffs(irq_status);
+	return irq_linear_revmap(h, irq);
+}
+
+static void hlwd_pic_irq_cascade(unsigned int cascade_virq,
+				      struct irq_desc *desc)
+{
+	struct irq_host *irq_host = get_irq_data(cascade_virq);
+	unsigned int virq;
+
+	raw_spin_lock(&desc->lock);
+	desc->chip->mask(cascade_virq); /* IRQ_LEVEL */
+	raw_spin_unlock(&desc->lock);
+
+	virq = __hlwd_pic_get_irq(irq_host);
+	if (virq != NO_IRQ)
+		generic_handle_irq(virq);
+	else
+		pr_err("spurious interrupt!\n");
+
+	raw_spin_lock(&desc->lock);
+	desc->chip->ack(cascade_virq); /* IRQ_LEVEL */
+	if (!(desc->status & IRQ_DISABLED) && desc->chip->unmask)
+		desc->chip->unmask(cascade_virq);
+	raw_spin_unlock(&desc->lock);
+}
+
+/*
+ * Platform hooks.
+ *
+ */
+
+static void __hlwd_quiesce(void __iomem *io_base)
+{
+	/* mask and ack all IRQs */
+	out_be32(io_base + HW_BROADWAY_IMR, 0);
+	out_be32(io_base + HW_BROADWAY_ICR, 0xffffffff);
+}
+
+struct irq_host *hlwd_pic_init(struct device_node *np)
+{
+	struct irq_host *irq_host;
+	struct resource res;
+	void __iomem *io_base;
+	int retval;
+
+	retval = of_address_to_resource(np, 0, &res);
+	if (retval) {
+		pr_err("no io memory range found\n");
+		return NULL;
+	}
+	io_base = ioremap(res.start, resource_size(&res));
+	if (!io_base) {
+		pr_err("ioremap failed\n");
+		return NULL;
+	}
+
+	pr_info("controller at 0x%08x mapped to 0x%p\n", res.start, io_base);
+
+	__hlwd_quiesce(io_base);
+
+	irq_host = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, HLWD_NR_IRQS,
+				  &hlwd_irq_host_ops, -1);
+	if (!irq_host) {
+		pr_err("failed to allocate irq_host\n");
+		return NULL;
+	}
+	irq_host->host_data = io_base;
+
+	return irq_host;
+}
+
+unsigned int hlwd_pic_get_irq(void)
+{
+	return __hlwd_pic_get_irq(hlwd_irq_host);
+}
+
+/*
+ * Probe function.
+ *
+ */
+
+void hlwd_pic_probe(void)
+{
+	struct irq_host *host;
+	struct device_node *np;
+	const u32 *interrupts;
+	int cascade_virq;
+
+	for_each_compatible_node(np, NULL, "nintendo,hollywood-pic") {
+		interrupts = of_get_property(np, "interrupts", NULL);
+		if (interrupts) {
+			host = hlwd_pic_init(np);
+			BUG_ON(!host);
+			cascade_virq = irq_of_parse_and_map(np, 0);
+			set_irq_data(cascade_virq, host);
+			set_irq_chained_handler(cascade_virq,
+						hlwd_pic_irq_cascade);
+			hlwd_irq_host = host;
+			break;
+		}
+	}
+}
+
+/**
+ * hlwd_quiesce() - quiesce hollywood irq controller
+ *
+ * Mask and ack all interrupt sources.
+ *
+ */
+void hlwd_quiesce(void)
+{
+	void __iomem *io_base = hlwd_irq_host->host_data;
+
+	__hlwd_quiesce(io_base);
+}
+
diff --git a/arch/powerpc/platforms/embedded6xx/hlwd-pic.h b/arch/powerpc/platforms/embedded6xx/hlwd-pic.h
new file mode 100644
index 000000000000..d2e5a092761e
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/hlwd-pic.h
@@ -0,0 +1,22 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/hlwd-pic.h
+ *
+ * Nintendo Wii "Hollywood" interrupt controller support.
+ * Copyright (C) 2009 The GameCube Linux Team
+ * Copyright (C) 2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+
+#ifndef __HLWD_PIC_H
+#define __HLWD_PIC_H
+
+extern unsigned int hlwd_pic_get_irq(void);
+extern void hlwd_pic_probe(void);
+extern void hlwd_quiesce(void);
+
+#endif
diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
new file mode 100644
index 000000000000..20a8ed91962e
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
@@ -0,0 +1,328 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
+ *
+ * udbg serial input/output routines for the USB Gecko adapter.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+
+#include <mm/mmu_decl.h>
+
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/fixmap.h>
+
+#include "usbgecko_udbg.h"
+
+
+#define EXI_CLK_32MHZ           5
+
+#define EXI_CSR                 0x00
+#define   EXI_CSR_CLKMASK       (0x7<<4)
+#define     EXI_CSR_CLK_32MHZ   (EXI_CLK_32MHZ<<4)
+#define   EXI_CSR_CSMASK        (0x7<<7)
+#define     EXI_CSR_CS_0        (0x1<<7)  /* Chip Select 001 */
+
+#define EXI_CR                  0x0c
+#define   EXI_CR_TSTART         (1<<0)
+#define   EXI_CR_WRITE		(1<<2)
+#define   EXI_CR_READ_WRITE     (2<<2)
+#define   EXI_CR_TLEN(len)      (((len)-1)<<4)
+
+#define EXI_DATA                0x10
+
+#define UG_READ_ATTEMPTS	100
+#define UG_WRITE_ATTEMPTS	100
+
+
+static void __iomem *ug_io_base;
+
+/*
+ * Performs one input/output transaction between the exi host and the usbgecko.
+ */
+static u32 ug_io_transaction(u32 in)
+{
+	u32 __iomem *csr_reg = ug_io_base + EXI_CSR;
+	u32 __iomem *data_reg = ug_io_base + EXI_DATA;
+	u32 __iomem *cr_reg = ug_io_base + EXI_CR;
+	u32 csr, data, cr;
+
+	/* select */
+	csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
+	out_be32(csr_reg, csr);
+
+	/* read/write */
+	data = in;
+	out_be32(data_reg, data);
+	cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
+	out_be32(cr_reg, cr);
+
+	while (in_be32(cr_reg) & EXI_CR_TSTART)
+		barrier();
+
+	/* deselect */
+	out_be32(csr_reg, 0);
+
+	/* result */
+	data = in_be32(data_reg);
+
+	return data;
+}
+
+/*
+ * Returns true if an usbgecko adapter is found.
+ */
+static int ug_is_adapter_present(void)
+{
+	if (!ug_io_base)
+		return 0;
+
+	return ug_io_transaction(0x90000000) == 0x04700000;
+}
+
+/*
+ * Returns true if the TX fifo is ready for transmission.
+ */
+static int ug_is_txfifo_ready(void)
+{
+	return ug_io_transaction(0xc0000000) & 0x04000000;
+}
+
+/*
+ * Tries to transmit a character.
+ * If the TX fifo is not ready the result is undefined.
+ */
+static void ug_raw_putc(char ch)
+{
+	ug_io_transaction(0xb0000000 | (ch << 20));
+}
+
+/*
+ * Transmits a character.
+ * It silently fails if the TX fifo is not ready after a number of retries.
+ */
+static void ug_putc(char ch)
+{
+	int count = UG_WRITE_ATTEMPTS;
+
+	if (!ug_io_base)
+		return;
+
+	if (ch == '\n')
+		ug_putc('\r');
+
+	while (!ug_is_txfifo_ready() && count--)
+		barrier();
+	if (count >= 0)
+		ug_raw_putc(ch);
+}
+
+/*
+ * Returns true if the RX fifo is ready for transmission.
+ */
+static int ug_is_rxfifo_ready(void)
+{
+	return ug_io_transaction(0xd0000000) & 0x04000000;
+}
+
+/*
+ * Tries to receive a character.
+ * If a character is unavailable the function returns -1.
+ */
+static int ug_raw_getc(void)
+{
+	u32 data = ug_io_transaction(0xa0000000);
+	if (data & 0x08000000)
+		return (data >> 16) & 0xff;
+	else
+		return -1;
+}
+
+/*
+ * Receives a character.
+ * It fails if the RX fifo is not ready after a number of retries.
+ */
+static int ug_getc(void)
+{
+	int count = UG_READ_ATTEMPTS;
+
+	if (!ug_io_base)
+		return -1;
+
+	while (!ug_is_rxfifo_ready() && count--)
+		barrier();
+	return ug_raw_getc();
+}
+
+/*
+ * udbg functions.
+ *
+ */
+
+/*
+ * Transmits a character.
+ */
+void ug_udbg_putc(char ch)
+{
+	ug_putc(ch);
+}
+
+/*
+ * Receives a character. Waits until a character is available.
+ */
+static int ug_udbg_getc(void)
+{
+	int ch;
+
+	while ((ch = ug_getc()) == -1)
+		barrier();
+	return ch;
+}
+
+/*
+ * Receives a character. If a character is not available, returns -1.
+ */
+static int ug_udbg_getc_poll(void)
+{
+	if (!ug_is_rxfifo_ready())
+		return -1;
+	return ug_getc();
+}
+
+/*
+ * Retrieves and prepares the virtual address needed to access the hardware.
+ */
+static void __iomem *ug_udbg_setup_exi_io_base(struct device_node *np)
+{
+	void __iomem *exi_io_base = NULL;
+	phys_addr_t paddr;
+	const unsigned int *reg;
+
+	reg = of_get_property(np, "reg", NULL);
+	if (reg) {
+		paddr = of_translate_address(np, reg);
+		if (paddr)
+			exi_io_base = ioremap(paddr, reg[1]);
+	}
+	return exi_io_base;
+}
+
+/*
+ * Checks if a USB Gecko adapter is inserted in any memory card slot.
+ */
+static void __iomem *ug_udbg_probe(void __iomem *exi_io_base)
+{
+	int i;
+
+	/* look for a usbgecko on memcard slots A and B */
+	for (i = 0; i < 2; i++) {
+		ug_io_base = exi_io_base + 0x14 * i;
+		if (ug_is_adapter_present())
+			break;
+	}
+	if (i == 2)
+		ug_io_base = NULL;
+	return ug_io_base;
+
+}
+
+/*
+ * USB Gecko udbg support initialization.
+ */
+void __init ug_udbg_init(void)
+{
+	struct device_node *np;
+	void __iomem *exi_io_base;
+
+	if (ug_io_base)
+		udbg_printf("%s: early -> final\n", __func__);
+
+	np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-exi");
+	if (!np) {
+		udbg_printf("%s: EXI node not found\n", __func__);
+		goto done;
+	}
+
+	exi_io_base = ug_udbg_setup_exi_io_base(np);
+	if (!exi_io_base) {
+		udbg_printf("%s: failed to setup EXI io base\n", __func__);
+		goto done;
+	}
+
+	if (!ug_udbg_probe(exi_io_base)) {
+		udbg_printf("usbgecko_udbg: not found\n");
+		iounmap(exi_io_base);
+	} else {
+		udbg_putc = ug_udbg_putc;
+		udbg_getc = ug_udbg_getc;
+		udbg_getc_poll = ug_udbg_getc_poll;
+		udbg_printf("usbgecko_udbg: ready\n");
+	}
+
+done:
+	if (np)
+		of_node_put(np);
+	return;
+}
+
+#ifdef CONFIG_PPC_EARLY_DEBUG_USBGECKO
+
+static phys_addr_t __init ug_early_grab_io_addr(void)
+{
+#if defined(CONFIG_GAMECUBE)
+	return 0x0c000000;
+#elif defined(CONFIG_WII)
+	return 0x0d000000;
+#else
+#error Invalid platform for USB Gecko based early debugging.
+#endif
+}
+
+/*
+ * USB Gecko early debug support initialization for udbg.
+ */
+void __init udbg_init_usbgecko(void)
+{
+	void __iomem *early_debug_area;
+	void __iomem *exi_io_base;
+
+	/*
+	 * At this point we have a BAT already setup that enables I/O
+	 * to the EXI hardware.
+	 *
+	 * The BAT uses a virtual address range reserved at the fixmap.
+	 * This must match the virtual address configured in
+	 * head_32.S:setup_usbgecko_bat().
+	 */
+	early_debug_area = (void __iomem *)__fix_to_virt(FIX_EARLY_DEBUG_BASE);
+	exi_io_base = early_debug_area + 0x00006800;
+
+	/* try to detect a USB Gecko */
+	if (!ug_udbg_probe(exi_io_base))
+		return;
+
+	/* we found a USB Gecko, load udbg hooks */
+	udbg_putc = ug_udbg_putc;
+	udbg_getc = ug_udbg_getc;
+	udbg_getc_poll = ug_udbg_getc_poll;
+
+	/*
+	 * Prepare again the same BAT for MMU_init.
+	 * This allows udbg I/O to continue working after the MMU is
+	 * turned on for real.
+	 * It is safe to continue using the same virtual address as it is
+	 * a reserved fixmap area.
+	 */
+	setbat(1, (unsigned long)early_debug_area,
+	       ug_early_grab_io_addr(), 128*1024, PAGE_KERNEL_NCG);
+}
+
+#endif /* CONFIG_PPC_EARLY_DEBUG_USBGECKO */
+
diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
new file mode 100644
index 000000000000..bb6cde4ad764
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
@@ -0,0 +1,32 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
+ *
+ * udbg serial input/output routines for the USB Gecko adapter.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+
+#ifndef __USBGECKO_UDBG_H
+#define __USBGECKO_UDBG_H
+
+#ifdef CONFIG_USBGECKO_UDBG
+
+extern void __init ug_udbg_init(void);
+
+#else
+
+static inline void __init ug_udbg_init(void)
+{
+}
+
+#endif /* CONFIG_USBGECKO_UDBG */
+
+void __init udbg_init_usbgecko(void);
+
+#endif /* __USBGECKO_UDBG_H */
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
new file mode 100644
index 000000000000..57e5b608fa1a
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/wii.c
@@ -0,0 +1,268 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/wii.c
+ *
+ * Nintendo Wii board-specific support
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+#define DRV_MODULE_NAME "wii"
+#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/kexec.h>
+#include <linux/of_platform.h>
+#include <linux/lmb.h>
+#include <mm/mmu_decl.h>
+
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+
+#include "flipper-pic.h"
+#include "hlwd-pic.h"
+#include "usbgecko_udbg.h"
+
+/* control block */
+#define HW_CTRL_COMPATIBLE	"nintendo,hollywood-control"
+
+#define HW_CTRL_RESETS		0x94
+#define HW_CTRL_RESETS_SYS	(1<<0)
+
+/* gpio */
+#define HW_GPIO_COMPATIBLE	"nintendo,hollywood-gpio"
+
+#define HW_GPIO_BASE(idx)	(idx * 0x20)
+#define HW_GPIO_OUT(idx)	(HW_GPIO_BASE(idx) + 0)
+#define HW_GPIO_DIR(idx)	(HW_GPIO_BASE(idx) + 4)
+
+#define HW_GPIO_SHUTDOWN	(1<<1)
+#define HW_GPIO_SLOT_LED	(1<<5)
+#define HW_GPIO_SENSOR_BAR	(1<<8)
+
+
+static void __iomem *hw_ctrl;
+static void __iomem *hw_gpio;
+
+unsigned long wii_hole_start;
+unsigned long wii_hole_size;
+
+
+static int __init page_aligned(unsigned long x)
+{
+	return !(x & (PAGE_SIZE-1));
+}
+
+void __init wii_memory_fixups(void)
+{
+	struct lmb_property *p = lmb.memory.region;
+
+	/*
+	 * This is part of a workaround to allow the use of two
+	 * discontiguous RAM ranges on the Wii, even if this is
+	 * currently unsupported on 32-bit PowerPC Linux.
+	 *
+	 * We coealesce the two memory ranges of the Wii into a
+	 * single range, then create a reservation for the "hole"
+	 * between both ranges.
+	 */
+
+	BUG_ON(lmb.memory.cnt != 2);
+	BUG_ON(!page_aligned(p[0].base) || !page_aligned(p[1].base));
+
+	p[0].size = _ALIGN_DOWN(p[0].size, PAGE_SIZE);
+	p[1].size = _ALIGN_DOWN(p[1].size, PAGE_SIZE);
+
+	wii_hole_start = p[0].base + p[0].size;
+	wii_hole_size = p[1].base - wii_hole_start;
+
+	pr_info("MEM1: <%08llx %08llx>\n", p[0].base, p[0].size);
+	pr_info("HOLE: <%08lx %08lx>\n", wii_hole_start, wii_hole_size);
+	pr_info("MEM2: <%08llx %08llx>\n", p[1].base, p[1].size);
+
+	p[0].size += wii_hole_size + p[1].size;
+
+	lmb.memory.cnt = 1;
+	lmb_analyze();
+
+	/* reserve the hole */
+	lmb_reserve(wii_hole_start, wii_hole_size);
+
+	/* allow ioremapping the address space in the hole */
+	__allow_ioremap_reserved = 1;
+}
+
+unsigned long __init wii_mmu_mapin_mem2(unsigned long top)
+{
+	unsigned long delta, size, bl;
+	unsigned long max_size = (256<<20);
+
+	/* MEM2 64MB@0x10000000 */
+	delta = wii_hole_start + wii_hole_size;
+	size = top - delta;
+	for (bl = 128<<10; bl < max_size; bl <<= 1) {
+		if (bl * 2 > size)
+			break;
+	}
+	setbat(4, PAGE_OFFSET+delta, delta, bl, PAGE_KERNEL_X);
+	return delta + bl;
+}
+
+static void wii_spin(void)
+{
+	local_irq_disable();
+	for (;;)
+		cpu_relax();
+}
+
+static void __iomem *wii_ioremap_hw_regs(char *name, char *compatible)
+{
+	void __iomem *hw_regs = NULL;
+	struct device_node *np;
+	struct resource res;
+	int error = -ENODEV;
+
+	np = of_find_compatible_node(NULL, NULL, compatible);
+	if (!np) {
+		pr_err("no compatible node found for %s\n", compatible);
+		goto out;
+	}
+	error = of_address_to_resource(np, 0, &res);
+	if (error) {
+		pr_err("no valid reg found for %s\n", np->name);
+		goto out_put;
+	}
+
+	hw_regs = ioremap(res.start, resource_size(&res));
+	if (hw_regs) {
+		pr_info("%s at 0x%08x mapped to 0x%p\n", name,
+			res.start, hw_regs);
+	}
+
+out_put:
+	of_node_put(np);
+out:
+	return hw_regs;
+}
+
+static void __init wii_setup_arch(void)
+{
+	hw_ctrl = wii_ioremap_hw_regs("hw_ctrl", HW_CTRL_COMPATIBLE);
+	hw_gpio = wii_ioremap_hw_regs("hw_gpio", HW_GPIO_COMPATIBLE);
+	if (hw_gpio) {
+		/* turn off the front blue led and IR light */
+		clrbits32(hw_gpio + HW_GPIO_OUT(0),
+			  HW_GPIO_SLOT_LED | HW_GPIO_SENSOR_BAR);
+	}
+}
+
+static void wii_restart(char *cmd)
+{
+	local_irq_disable();
+
+	if (hw_ctrl) {
+		/* clear the system reset pin to cause a reset */
+		clrbits32(hw_ctrl + HW_CTRL_RESETS, HW_CTRL_RESETS_SYS);
+	}
+	wii_spin();
+}
+
+static void wii_power_off(void)
+{
+	local_irq_disable();
+
+	if (hw_gpio) {
+		/* make sure that the poweroff GPIO is configured as output */
+		setbits32(hw_gpio + HW_GPIO_DIR(1), HW_GPIO_SHUTDOWN);
+
+		/* drive the poweroff GPIO high */
+		setbits32(hw_gpio + HW_GPIO_OUT(1), HW_GPIO_SHUTDOWN);
+	}
+	wii_spin();
+}
+
+static void wii_halt(void)
+{
+	if (ppc_md.restart)
+		ppc_md.restart(NULL);
+	wii_spin();
+}
+
+static void __init wii_init_early(void)
+{
+	ug_udbg_init();
+}
+
+static void __init wii_pic_probe(void)
+{
+	flipper_pic_probe();
+	hlwd_pic_probe();
+}
+
+static int __init wii_probe(void)
+{
+	unsigned long dt_root;
+
+	dt_root = of_get_flat_dt_root();
+	if (!of_flat_dt_is_compatible(dt_root, "nintendo,wii"))
+		return 0;
+
+	return 1;
+}
+
+static void wii_shutdown(void)
+{
+	hlwd_quiesce();
+	flipper_quiesce();
+}
+
+#ifdef CONFIG_KEXEC
+static int wii_machine_kexec_prepare(struct kimage *image)
+{
+	return 0;
+}
+#endif /* CONFIG_KEXEC */
+
+define_machine(wii) {
+	.name			= "wii",
+	.probe			= wii_probe,
+	.init_early		= wii_init_early,
+	.setup_arch		= wii_setup_arch,
+	.restart		= wii_restart,
+	.power_off		= wii_power_off,
+	.halt			= wii_halt,
+	.init_IRQ		= wii_pic_probe,
+	.get_irq		= flipper_pic_get_irq,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+	.machine_shutdown	= wii_shutdown,
+#ifdef CONFIG_KEXEC
+	.machine_kexec_prepare	= wii_machine_kexec_prepare,
+#endif
+};
+
+static struct of_device_id wii_of_bus[] = {
+	{ .compatible = "nintendo,hollywood", },
+	{ },
+};
+
+static int __init wii_device_probe(void)
+{
+	if (!machine_is(wii))
+		return 0;
+
+	of_platform_bus_probe(NULL, wii_of_bus, NULL);
+	return 0;
+}
+device_initcall(wii_device_probe);
+
diff --git a/arch/powerpc/platforms/iseries/htab.c b/arch/powerpc/platforms/iseries/htab.c
index f99c6c4b6985..3ae66ab9d5e7 100644
--- a/arch/powerpc/platforms/iseries/htab.c
+++ b/arch/powerpc/platforms/iseries/htab.c
@@ -19,8 +19,7 @@
 
 #include "call_hpt.h"
 
-static spinlock_t iSeries_hlocks[64] __cacheline_aligned_in_smp =
-	{ [0 ... 63] = SPIN_LOCK_UNLOCKED};
+static spinlock_t iSeries_hlocks[64] __cacheline_aligned_in_smp;
 
 /*
  * Very primitive algorithm for picking up a lock
@@ -245,6 +244,11 @@ static void iSeries_hpte_invalidate(unsigned long slot, unsigned long va,
 
 void __init hpte_init_iSeries(void)
 {
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(iSeries_hlocks); i++)
+		spin_lock_init(&iSeries_hlocks[i]);
+
 	ppc_md.hpte_invalidate	= iSeries_hpte_invalidate;
 	ppc_md.hpte_updatepp	= iSeries_hpte_updatepp;
 	ppc_md.hpte_updateboltedpp = iSeries_hpte_updateboltedpp;
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index 94f444758836..86c4b29eea89 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -214,12 +214,12 @@ void __init iSeries_activate_IRQs()
 	unsigned long flags;
 
 	for_each_irq (irq) {
-		struct irq_desc *desc = get_irq_desc(irq);
+		struct irq_desc *desc = irq_to_desc(irq);
 
 		if (desc && desc->chip && desc->chip->startup) {
-			spin_lock_irqsave(&desc->lock, flags);
+			raw_spin_lock_irqsave(&desc->lock, flags);
 			desc->chip->startup(irq);
-			spin_unlock_irqrestore(&desc->lock, flags);
+			raw_spin_unlock_irqrestore(&desc->lock, flags);
 		}
 	}
 }
@@ -273,7 +273,7 @@ static void iseries_end_IRQ(unsigned int irq)
 }
 
 static struct irq_chip iseries_pic = {
-	.typename	= "iSeries irq controller",
+	.name	= "iSeries irq controller",
 	.startup	= iseries_startup_IRQ,
 	.shutdown	= iseries_shutdown_IRQ,
 	.unmask		= iseries_enable_IRQ,
diff --git a/arch/powerpc/platforms/iseries/mf.c b/arch/powerpc/platforms/iseries/mf.c
index 0d9343df35bc..6617915bcb1a 100644
--- a/arch/powerpc/platforms/iseries/mf.c
+++ b/arch/powerpc/platforms/iseries/mf.c
@@ -855,59 +855,58 @@ static int mf_get_boot_rtc(struct rtc_time *tm)
 }
 
 #ifdef CONFIG_PROC_FS
-
-static int proc_mf_dump_cmdline(char *page, char **start, off_t off,
-		int count, int *eof, void *data)
+static int mf_cmdline_proc_show(struct seq_file *m, void *v)
 {
-	int len;
-	char *p;
+	char *page, *p;
 	struct vsp_cmd_data vsp_cmd;
 	int rc;
 	dma_addr_t dma_addr;
 
 	/* The HV appears to return no more than 256 bytes of command line */
-	if (off >= 256)
-		return 0;
-	if ((off + count) > 256)
-		count = 256 - off;
+	page = kmalloc(256, GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
 
-	dma_addr = iseries_hv_map(page, off + count, DMA_FROM_DEVICE);
-	if (dma_addr == DMA_ERROR_CODE)
+	dma_addr = iseries_hv_map(page, 256, DMA_FROM_DEVICE);
+	if (dma_addr == DMA_ERROR_CODE) {
+		kfree(page);
 		return -ENOMEM;
-	memset(page, 0, off + count);
+	}
+	memset(page, 0, 256);
 	memset(&vsp_cmd, 0, sizeof(vsp_cmd));
 	vsp_cmd.cmd = 33;
 	vsp_cmd.sub_data.kern.token = dma_addr;
 	vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
-	vsp_cmd.sub_data.kern.side = (u64)data;
-	vsp_cmd.sub_data.kern.length = off + count;
+	vsp_cmd.sub_data.kern.side = (u64)m->private;
+	vsp_cmd.sub_data.kern.length = 256;
 	mb();
 	rc = signal_vsp_instruction(&vsp_cmd);
-	iseries_hv_unmap(dma_addr, off + count, DMA_FROM_DEVICE);
-	if (rc)
+	iseries_hv_unmap(dma_addr, 256, DMA_FROM_DEVICE);
+	if (rc) {
+		kfree(page);
 		return rc;
-	if (vsp_cmd.result_code != 0)
+	}
+	if (vsp_cmd.result_code != 0) {
+		kfree(page);
 		return -ENOMEM;
+	}
 	p = page;
-	len = 0;
-	while (len < (off + count)) {
-		if ((*p == '\0') || (*p == '\n')) {
-			if (*p == '\0')
-				*p = '\n';
-			p++;
-			len++;
-			*eof = 1;
+	while (p - page < 256) {
+		if (*p == '\0' || *p == '\n') {
+			*p = '\n';
 			break;
 		}
 		p++;
-		len++;
-	}
 
-	if (len < off) {
-		*eof = 1;
-		len = 0;
 	}
-	return len;
+	seq_write(m, page, p - page);
+	kfree(page);
+	return 0;
+}
+
+static int mf_cmdline_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, mf_cmdline_proc_show, PDE(inode)->data);
 }
 
 #if 0
@@ -962,10 +961,8 @@ static int proc_mf_dump_vmlinux(char *page, char **start, off_t off,
 }
 #endif
 
-static int proc_mf_dump_side(char *page, char **start, off_t off,
-		int count, int *eof, void *data)
+static int mf_side_proc_show(struct seq_file *m, void *v)
 {
-	int len;
 	char mf_current_side = ' ';
 	struct vsp_cmd_data vsp_cmd;
 
@@ -989,21 +986,17 @@ static int proc_mf_dump_side(char *page, char **start, off_t off,
 		}
 	}
 
-	len = sprintf(page, "%c\n", mf_current_side);
+	seq_printf(m, "%c\n", mf_current_side);
+	return 0;
+}
 
-	if (len <= (off + count))
-		*eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len > count)
-		len = count;
-	if (len < 0)
-		len = 0;
-	return len;
+static int mf_side_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, mf_side_proc_show, NULL);
 }
 
-static int proc_mf_change_side(struct file *file, const char __user *buffer,
-		unsigned long count, void *data)
+static ssize_t mf_side_proc_write(struct file *file, const char __user *buffer,
+				  size_t count, loff_t *pos)
 {
 	char side;
 	u64 newSide;
@@ -1041,6 +1034,15 @@ static int proc_mf_change_side(struct file *file, const char __user *buffer,
 	return count;
 }
 
+static const struct file_operations mf_side_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= mf_side_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= mf_side_proc_write,
+};
+
 #if 0
 static void mf_getSrcHistory(char *buffer, int size)
 {
@@ -1087,8 +1089,7 @@ static void mf_getSrcHistory(char *buffer, int size)
 }
 #endif
 
-static int proc_mf_dump_src(char *page, char **start, off_t off,
-		int count, int *eof, void *data)
+static int mf_src_proc_show(struct seq_file *m, void *v)
 {
 #if 0
 	int len;
@@ -1109,8 +1110,13 @@ static int proc_mf_dump_src(char *page, char **start, off_t off,
 #endif
 }
 
-static int proc_mf_change_src(struct file *file, const char __user *buffer,
-		unsigned long count, void *data)
+static int mf_src_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, mf_src_proc_show, NULL);
+}
+
+static ssize_t mf_src_proc_write(struct file *file, const char __user *buffer,
+				 size_t count, loff_t *pos)
 {
 	char stkbuf[10];
 
@@ -1135,9 +1141,19 @@ static int proc_mf_change_src(struct file *file, const char __user *buffer,
 	return count;
 }
 
-static int proc_mf_change_cmdline(struct file *file, const char __user *buffer,
-		unsigned long count, void *data)
+static const struct file_operations mf_src_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= mf_src_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= mf_src_proc_write,
+};
+
+static ssize_t mf_cmdline_proc_write(struct file *file, const char __user *buffer,
+				     size_t count, loff_t *pos)
 {
+	void *data = PDE(file->f_path.dentry->d_inode)->data;
 	struct vsp_cmd_data vsp_cmd;
 	dma_addr_t dma_addr;
 	char *page;
@@ -1172,6 +1188,15 @@ out:
 	return ret;
 }
 
+static const struct file_operations mf_cmdline_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= mf_cmdline_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= mf_cmdline_proc_write,
+};
+
 static ssize_t proc_mf_change_vmlinux(struct file *file,
 				      const char __user *buf,
 				      size_t count, loff_t *ppos)
@@ -1246,12 +1271,10 @@ static int __init mf_proc_init(void)
 		if (!mf)
 			return 1;
 
-		ent = create_proc_entry("cmdline", S_IFREG|S_IRUSR|S_IWUSR, mf);
+		ent = proc_create_data("cmdline", S_IRUSR|S_IWUSR, mf,
+				       &mf_cmdline_proc_fops, (void *)(long)i);
 		if (!ent)
 			return 1;
-		ent->data = (void *)(long)i;
-		ent->read_proc = proc_mf_dump_cmdline;
-		ent->write_proc = proc_mf_change_cmdline;
 
 		if (i == 3)	/* no vmlinux entry for 'D' */
 			continue;
@@ -1263,19 +1286,15 @@ static int __init mf_proc_init(void)
 			return 1;
 	}
 
-	ent = create_proc_entry("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
+	ent = proc_create("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root,
+			  &mf_side_proc_fops);
 	if (!ent)
 		return 1;
-	ent->data = (void *)0;
-	ent->read_proc = proc_mf_dump_side;
-	ent->write_proc = proc_mf_change_side;
 
-	ent = create_proc_entry("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
+	ent = proc_create("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root,
+			  &mf_src_proc_fops);
 	if (!ent)
 		return 1;
-	ent->data = (void *)0;
-	ent->read_proc = proc_mf_dump_src;
-	ent->write_proc = proc_mf_change_src;
 
 	return 0;
 }
diff --git a/arch/powerpc/platforms/iseries/vio.c b/arch/powerpc/platforms/iseries/vio.c
index 657b72f68493..2aa8b5631beb 100644
--- a/arch/powerpc/platforms/iseries/vio.c
+++ b/arch/powerpc/platforms/iseries/vio.c
@@ -474,6 +474,8 @@ static void __init get_viotape_info(struct device_node *vio_root)
 	struct vio_waitevent we;
 	int ret;
 
+	init_completion(&we.com);
+
 	ret = viopath_open(viopath_hostLp, viomajorsubtype_tape, 2);
 	if (ret) {
 		printk(KERN_WARNING "get_viotape_info: "
diff --git a/arch/powerpc/platforms/iseries/viopath.c b/arch/powerpc/platforms/iseries/viopath.c
index 49ff4dc422b7..5aea94f30836 100644
--- a/arch/powerpc/platforms/iseries/viopath.c
+++ b/arch/powerpc/platforms/iseries/viopath.c
@@ -116,7 +116,7 @@ static int proc_viopath_show(struct seq_file *m, void *v)
 	u16 vlanMap;
 	dma_addr_t handle;
 	HvLpEvent_Rc hvrc;
-	DECLARE_COMPLETION(done);
+	DECLARE_COMPLETION_ONSTACK(done);
 	struct device_node *node;
 	const char *sysid;
 
diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
index a4619347aa7e..242f8095c2df 100644
--- a/arch/powerpc/platforms/pasemi/setup.c
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -71,7 +71,7 @@ static void pas_restart(char *cmd)
 }
 
 #ifdef CONFIG_SMP
-static raw_spinlock_t timebase_lock;
+static arch_spinlock_t timebase_lock;
 static unsigned long timebase;
 
 static void __devinit pas_give_timebase(void)
@@ -80,11 +80,11 @@ static void __devinit pas_give_timebase(void)
 
 	local_irq_save(flags);
 	hard_irq_disable();
-	__raw_spin_lock(&timebase_lock);
+	arch_spin_lock(&timebase_lock);
 	mtspr(SPRN_TBCTL, TBCTL_FREEZE);
 	isync();
 	timebase = get_tb();
-	__raw_spin_unlock(&timebase_lock);
+	arch_spin_unlock(&timebase_lock);
 
 	while (timebase)
 		barrier();
@@ -97,10 +97,10 @@ static void __devinit pas_take_timebase(void)
 	while (!timebase)
 		smp_rmb();
 
-	__raw_spin_lock(&timebase_lock);
+	arch_spin_lock(&timebase_lock);
 	set_tb(timebase >> 32, timebase & 0xffffffff);
 	timebase = 0;
-	__raw_spin_unlock(&timebase_lock);
+	arch_spin_unlock(&timebase_lock);
 }
 
 struct smp_ops_t pas_smp_ops = {
diff --git a/arch/powerpc/platforms/powermac/bootx_init.c b/arch/powerpc/platforms/powermac/bootx_init.c
index cf660916ae0b..9dd789a7370d 100644
--- a/arch/powerpc/platforms/powermac/bootx_init.c
+++ b/arch/powerpc/platforms/powermac/bootx_init.c
@@ -12,7 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/init.h>
-#include <linux/utsrelease.h>
+#include <generated/utsrelease.h>
 #include <asm/sections.h>
 #include <asm/prom.h>
 #include <asm/page.h>
diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c
index 414ca9849f23..345e2da56767 100644
--- a/arch/powerpc/platforms/powermac/low_i2c.c
+++ b/arch/powerpc/platforms/powermac/low_i2c.c
@@ -42,6 +42,7 @@
 #include <linux/interrupt.h>
 #include <linux/timer.h>
 #include <linux/mutex.h>
+#include <linux/i2c.h>
 #include <asm/keylargo.h>
 #include <asm/uninorth.h>
 #include <asm/io.h>
@@ -80,7 +81,7 @@ struct pmac_i2c_bus
 	struct device_node	*busnode;
 	int			type;
 	int			flags;
-	struct i2c_adapter	*adapter;
+	struct i2c_adapter	adapter;
 	void			*hostdata;
 	int			channel;	/* some hosts have multiple */
 	int			mode;		/* current mode */
@@ -1014,25 +1015,9 @@ int pmac_i2c_get_channel(struct pmac_i2c_bus *bus)
 EXPORT_SYMBOL_GPL(pmac_i2c_get_channel);
 
 
-void pmac_i2c_attach_adapter(struct pmac_i2c_bus *bus,
-			     struct i2c_adapter *adapter)
-{
-	WARN_ON(bus->adapter != NULL);
-	bus->adapter = adapter;
-}
-EXPORT_SYMBOL_GPL(pmac_i2c_attach_adapter);
-
-void pmac_i2c_detach_adapter(struct pmac_i2c_bus *bus,
-			     struct i2c_adapter *adapter)
-{
-	WARN_ON(bus->adapter != adapter);
-	bus->adapter = NULL;
-}
-EXPORT_SYMBOL_GPL(pmac_i2c_detach_adapter);
-
 struct i2c_adapter *pmac_i2c_get_adapter(struct pmac_i2c_bus *bus)
 {
-	return bus->adapter;
+	return &bus->adapter;
 }
 EXPORT_SYMBOL_GPL(pmac_i2c_get_adapter);
 
@@ -1041,7 +1026,7 @@ struct pmac_i2c_bus *pmac_i2c_adapter_to_bus(struct i2c_adapter *adapter)
 	struct pmac_i2c_bus *bus;
 
 	list_for_each_entry(bus, &pmac_i2c_busses, link)
-		if (bus->adapter == adapter)
+		if (&bus->adapter == adapter)
 			return bus;
 	return NULL;
 }
@@ -1053,7 +1038,7 @@ int pmac_i2c_match_adapter(struct device_node *dev, struct i2c_adapter *adapter)
 
 	if (bus == NULL)
 		return 0;
-	return (bus->adapter == adapter);
+	return (&bus->adapter == adapter);
 }
 EXPORT_SYMBOL_GPL(pmac_i2c_match_adapter);
 
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index e81403b245b5..ab2027cdf893 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -302,7 +302,7 @@ static void __init setup_chaos(struct pci_controller *hose,
  *  1 -> Skip the device but act as if the access was successfull
  *       (return 0xff's on reads, eventually, cache config space
  *       accesses in a later version)
- * -1 -> Hide the device (unsuccessful acess)
+ * -1 -> Hide the device (unsuccessful access)
  */
 static int u3_ht_skip_device(struct pci_controller *hose,
 			     struct pci_bus *bus, unsigned int devfn)
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index d212006a5b3c..09e827296276 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -152,12 +152,12 @@ static unsigned int pmac_startup_irq(unsigned int virq)
         unsigned long bit = 1UL << (src & 0x1f);
         int i = src >> 5;
 
-  	spin_lock_irqsave(&pmac_pic_lock, flags);
-	if ((irq_desc[virq].status & IRQ_LEVEL) == 0)
+	spin_lock_irqsave(&pmac_pic_lock, flags);
+	if ((irq_to_desc(virq)->status & IRQ_LEVEL) == 0)
 		out_le32(&pmac_irq_hw[i]->ack, bit);
         __set_bit(src, ppc_cached_irq_mask);
         __pmac_set_irq_mask(src, 0);
-  	spin_unlock_irqrestore(&pmac_pic_lock, flags);
+	spin_unlock_irqrestore(&pmac_pic_lock, flags);
 
 	return 0;
 }
@@ -195,7 +195,7 @@ static int pmac_retrigger(unsigned int virq)
 }
 
 static struct irq_chip pmac_pic = {
-	.typename	= " PMAC-PIC ",
+	.name		= " PMAC-PIC ",
 	.startup	= pmac_startup_irq,
 	.mask		= pmac_mask_irq,
 	.ack		= pmac_ack_irq,
@@ -285,7 +285,7 @@ static int pmac_pic_host_match(struct irq_host *h, struct device_node *node)
 static int pmac_pic_host_map(struct irq_host *h, unsigned int virq,
 			     irq_hw_number_t hw)
 {
-	struct irq_desc *desc = get_irq_desc(virq);
+	struct irq_desc *desc = irq_to_desc(virq);
 	int level;
 
 	if (hw >= max_irqs)
@@ -303,7 +303,7 @@ static int pmac_pic_host_map(struct irq_host *h, unsigned int virq,
 }
 
 static int pmac_pic_host_xlate(struct irq_host *h, struct device_node *ct,
-			       u32 *intspec, unsigned int intsize,
+			       const u32 *intspec, unsigned int intsize,
 			       irq_hw_number_t *out_hwirq,
 			       unsigned int *out_flags)
 
diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c
index 8ec5ccf76b19..59d9712d7364 100644
--- a/arch/powerpc/platforms/ps3/interrupt.c
+++ b/arch/powerpc/platforms/ps3/interrupt.c
@@ -152,7 +152,7 @@ static void ps3_chip_eoi(unsigned int virq)
  */
 
 static struct irq_chip ps3_irq_chip = {
-	.typename = "ps3",
+	.name = "ps3",
 	.mask = ps3_chip_mask,
 	.unmask = ps3_chip_unmask,
 	.eoi = ps3_chip_eoi,
diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c
index 189a25b80735..e81b028a2a48 100644
--- a/arch/powerpc/platforms/ps3/mm.c
+++ b/arch/powerpc/platforms/ps3/mm.c
@@ -34,7 +34,7 @@
 #if defined(DEBUG)
 #define DBG udbg_printf
 #else
-#define DBG pr_debug
+#define DBG pr_devel
 #endif
 
 enum {
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index f0e6f28427bd..c667f0f02c34 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -2,8 +2,11 @@ config PPC_PSERIES
 	depends on PPC64 && PPC_BOOK3S
 	bool "IBM pSeries & new (POWER5-based) iSeries"
 	select MPIC
+	select PCI_MSI
+	select XICS
 	select PPC_I8259
 	select PPC_RTAS
+	select PPC_RTAS_DAEMON
 	select RTAS_ERROR_LOGGING
 	select PPC_UDBG_16550
 	select PPC_NATIVE
@@ -59,7 +62,7 @@ config PPC_SMLPAR
 
 config CMM
 	tristate "Collaborative memory management"
-	depends on PPC_SMLPAR && !CRASH_DUMP
+	depends on PPC_SMLPAR
 	default y
 	help
 	  Select this option, if you want to enable the kernel interface
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index 790c0b872d4f..0ff5174ae4f5 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -7,8 +7,8 @@ EXTRA_CFLAGS		+= -DDEBUG
 endif
 
 obj-y			:= lpar.o hvCall.o nvram.o reconfig.o \
-			   setup.o iommu.o ras.o rtasd.o \
-			   firmware.o power.o
+			   setup.o iommu.o ras.o \
+			   firmware.o power.o dlpar.o
 obj-$(CONFIG_SMP)	+= smp.o
 obj-$(CONFIG_XICS)	+= xics.o
 obj-$(CONFIG_SCANLOG)	+= scanlog.o
diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index 6567439fe78d..a277f2e28dbc 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -38,19 +38,28 @@
 #include <asm/mmu.h>
 #include <asm/pgalloc.h>
 #include <asm/uaccess.h>
+#include <linux/memory.h>
 
 #include "plpar_wrappers.h"
 
 #define CMM_DRIVER_VERSION	"1.0.0"
 #define CMM_DEFAULT_DELAY	1
+#define CMM_HOTPLUG_DELAY	5
 #define CMM_DEBUG			0
 #define CMM_DISABLE		0
 #define CMM_OOM_KB		1024
 #define CMM_MIN_MEM_MB		256
 #define KB2PAGES(_p)		((_p)>>(PAGE_SHIFT-10))
 #define PAGES2KB(_p)		((_p)<<(PAGE_SHIFT-10))
+/*
+ * The priority level tries to ensure that this notifier is called as
+ * late as possible to reduce thrashing in the shared memory pool.
+ */
+#define CMM_MEM_HOTPLUG_PRI	1
+#define CMM_MEM_ISOLATE_PRI	15
 
 static unsigned int delay = CMM_DEFAULT_DELAY;
+static unsigned int hotplug_delay = CMM_HOTPLUG_DELAY;
 static unsigned int oom_kb = CMM_OOM_KB;
 static unsigned int cmm_debug = CMM_DEBUG;
 static unsigned int cmm_disabled = CMM_DISABLE;
@@ -65,6 +74,10 @@ MODULE_VERSION(CMM_DRIVER_VERSION);
 module_param_named(delay, delay, uint, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(delay, "Delay (in seconds) between polls to query hypervisor paging requests. "
 		 "[Default=" __stringify(CMM_DEFAULT_DELAY) "]");
+module_param_named(hotplug_delay, hotplug_delay, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(delay, "Delay (in seconds) after memory hotplug remove "
+		 "before loaning resumes. "
+		 "[Default=" __stringify(CMM_HOTPLUG_DELAY) "]");
 module_param_named(oom_kb, oom_kb, uint, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(oom_kb, "Amount of memory in kb to free on OOM. "
 		 "[Default=" __stringify(CMM_OOM_KB) "]");
@@ -92,6 +105,9 @@ static unsigned long oom_freed_pages;
 static struct cmm_page_array *cmm_page_list;
 static DEFINE_SPINLOCK(cmm_lock);
 
+static DEFINE_MUTEX(hotplug_mutex);
+static int hotplug_occurred; /* protected by the hotplug mutex */
+
 static struct task_struct *cmm_thread_ptr;
 
 /**
@@ -110,6 +126,17 @@ static long cmm_alloc_pages(long nr)
 	cmm_dbg("Begin request for %ld pages\n", nr);
 
 	while (nr) {
+		/* Exit if a hotplug operation is in progress or occurred */
+		if (mutex_trylock(&hotplug_mutex)) {
+			if (hotplug_occurred) {
+				mutex_unlock(&hotplug_mutex);
+				break;
+			}
+			mutex_unlock(&hotplug_mutex);
+		} else {
+			break;
+		}
+
 		addr = __get_free_page(GFP_NOIO | __GFP_NOWARN |
 				       __GFP_NORETRY | __GFP_NOMEMALLOC);
 		if (!addr)
@@ -119,8 +146,9 @@ static long cmm_alloc_pages(long nr)
 		if (!pa || pa->index >= CMM_NR_PAGES) {
 			/* Need a new page for the page list. */
 			spin_unlock(&cmm_lock);
-			npa = (struct cmm_page_array *)__get_free_page(GFP_NOIO | __GFP_NOWARN |
-								       __GFP_NORETRY | __GFP_NOMEMALLOC);
+			npa = (struct cmm_page_array *)__get_free_page(
+					GFP_NOIO | __GFP_NOWARN |
+					__GFP_NORETRY | __GFP_NOMEMALLOC);
 			if (!npa) {
 				pr_info("%s: Can not allocate new page list\n", __func__);
 				free_page(addr);
@@ -229,8 +257,9 @@ static void cmm_get_mpp(void)
 {
 	int rc;
 	struct hvcall_mpp_data mpp_data;
-	unsigned long active_pages_target;
-	signed long page_loan_request;
+	signed long active_pages_target, page_loan_request, target;
+	signed long total_pages = totalram_pages + loaned_pages;
+	signed long min_mem_pages = (min_mem_mb * 1024 * 1024) / PAGE_SIZE;
 
 	rc = h_get_mpp(&mpp_data);
 
@@ -238,17 +267,25 @@ static void cmm_get_mpp(void)
 		return;
 
 	page_loan_request = div_s64((s64)mpp_data.loan_request, PAGE_SIZE);
-	loaned_pages_target = page_loan_request + loaned_pages;
-	if (loaned_pages_target > oom_freed_pages)
-		loaned_pages_target -= oom_freed_pages;
+	target = page_loan_request + (signed long)loaned_pages;
+
+	if (target < 0 || total_pages < min_mem_pages)
+		target = 0;
+
+	if (target > oom_freed_pages)
+		target -= oom_freed_pages;
 	else
-		loaned_pages_target = 0;
+		target = 0;
+
+	active_pages_target = total_pages - target;
 
-	active_pages_target = totalram_pages + loaned_pages - loaned_pages_target;
+	if (min_mem_pages > active_pages_target)
+		target = total_pages - min_mem_pages;
 
-	if ((min_mem_mb * 1024 * 1024) > (active_pages_target * PAGE_SIZE))
-		loaned_pages_target = totalram_pages + loaned_pages -
-			((min_mem_mb * 1024 * 1024) / PAGE_SIZE);
+	if (target < 0)
+		target = 0;
+
+	loaned_pages_target = target;
 
 	cmm_dbg("delta = %ld, loaned = %lu, target = %lu, oom = %lu, totalram = %lu\n",
 		page_loan_request, loaned_pages, loaned_pages_target,
@@ -273,9 +310,28 @@ static int cmm_thread(void *dummy)
 	while (1) {
 		timeleft = msleep_interruptible(delay * 1000);
 
-		if (kthread_should_stop() || timeleft) {
-			loaned_pages_target = loaned_pages;
+		if (kthread_should_stop() || timeleft)
 			break;
+
+		if (mutex_trylock(&hotplug_mutex)) {
+			if (hotplug_occurred) {
+				hotplug_occurred = 0;
+				mutex_unlock(&hotplug_mutex);
+				cmm_dbg("Hotplug operation has occurred, "
+						"loaning activity suspended "
+						"for %d seconds.\n",
+						hotplug_delay);
+				timeleft = msleep_interruptible(hotplug_delay *
+						1000);
+				if (kthread_should_stop() || timeleft)
+					break;
+				continue;
+			}
+			mutex_unlock(&hotplug_mutex);
+		} else {
+			cmm_dbg("Hotplug operation in progress, activity "
+					"suspended\n");
+			continue;
 		}
 
 		cmm_get_mpp();
@@ -405,6 +461,193 @@ static struct notifier_block cmm_reboot_nb = {
 };
 
 /**
+ * cmm_count_pages - Count the number of pages loaned in a particular range.
+ *
+ * @arg: memory_isolate_notify structure with address range and count
+ *
+ * Return value:
+ *      0 on success
+ **/
+static unsigned long cmm_count_pages(void *arg)
+{
+	struct memory_isolate_notify *marg = arg;
+	struct cmm_page_array *pa;
+	unsigned long start = (unsigned long)pfn_to_kaddr(marg->start_pfn);
+	unsigned long end = start + (marg->nr_pages << PAGE_SHIFT);
+	unsigned long idx;
+
+	spin_lock(&cmm_lock);
+	pa = cmm_page_list;
+	while (pa) {
+		if ((unsigned long)pa >= start && (unsigned long)pa < end)
+			marg->pages_found++;
+		for (idx = 0; idx < pa->index; idx++)
+			if (pa->page[idx] >= start && pa->page[idx] < end)
+				marg->pages_found++;
+		pa = pa->next;
+	}
+	spin_unlock(&cmm_lock);
+	return 0;
+}
+
+/**
+ * cmm_memory_isolate_cb - Handle memory isolation notifier calls
+ * @self:	notifier block struct
+ * @action:	action to take
+ * @arg:	struct memory_isolate_notify data for handler
+ *
+ * Return value:
+ *	NOTIFY_OK or notifier error based on subfunction return value
+ **/
+static int cmm_memory_isolate_cb(struct notifier_block *self,
+				 unsigned long action, void *arg)
+{
+	int ret = 0;
+
+	if (action == MEM_ISOLATE_COUNT)
+		ret = cmm_count_pages(arg);
+
+	if (ret)
+		ret = notifier_from_errno(ret);
+	else
+		ret = NOTIFY_OK;
+
+	return ret;
+}
+
+static struct notifier_block cmm_mem_isolate_nb = {
+	.notifier_call = cmm_memory_isolate_cb,
+	.priority = CMM_MEM_ISOLATE_PRI
+};
+
+/**
+ * cmm_mem_going_offline - Unloan pages where memory is to be removed
+ * @arg: memory_notify structure with page range to be offlined
+ *
+ * Return value:
+ *	0 on success
+ **/
+static int cmm_mem_going_offline(void *arg)
+{
+	struct memory_notify *marg = arg;
+	unsigned long start_page = (unsigned long)pfn_to_kaddr(marg->start_pfn);
+	unsigned long end_page = start_page + (marg->nr_pages << PAGE_SHIFT);
+	struct cmm_page_array *pa_curr, *pa_last, *npa;
+	unsigned long idx;
+	unsigned long freed = 0;
+
+	cmm_dbg("Memory going offline, searching 0x%lx (%ld pages).\n",
+			start_page, marg->nr_pages);
+	spin_lock(&cmm_lock);
+
+	/* Search the page list for pages in the range to be offlined */
+	pa_last = pa_curr = cmm_page_list;
+	while (pa_curr) {
+		for (idx = (pa_curr->index - 1); (idx + 1) > 0; idx--) {
+			if ((pa_curr->page[idx] < start_page) ||
+			    (pa_curr->page[idx] >= end_page))
+				continue;
+
+			plpar_page_set_active(__pa(pa_curr->page[idx]));
+			free_page(pa_curr->page[idx]);
+			freed++;
+			loaned_pages--;
+			totalram_pages++;
+			pa_curr->page[idx] = pa_last->page[--pa_last->index];
+			if (pa_last->index == 0) {
+				if (pa_curr == pa_last)
+					pa_curr = pa_last->next;
+				pa_last = pa_last->next;
+				free_page((unsigned long)cmm_page_list);
+				cmm_page_list = pa_last;
+				continue;
+			}
+		}
+		pa_curr = pa_curr->next;
+	}
+
+	/* Search for page list structures in the range to be offlined */
+	pa_last = NULL;
+	pa_curr = cmm_page_list;
+	while (pa_curr) {
+		if (((unsigned long)pa_curr >= start_page) &&
+				((unsigned long)pa_curr < end_page)) {
+			npa = (struct cmm_page_array *)__get_free_page(
+					GFP_NOIO | __GFP_NOWARN |
+					__GFP_NORETRY | __GFP_NOMEMALLOC);
+			if (!npa) {
+				spin_unlock(&cmm_lock);
+				cmm_dbg("Failed to allocate memory for list "
+						"management. Memory hotplug "
+						"failed.\n");
+				return ENOMEM;
+			}
+			memcpy(npa, pa_curr, PAGE_SIZE);
+			if (pa_curr == cmm_page_list)
+				cmm_page_list = npa;
+			if (pa_last)
+				pa_last->next = npa;
+			free_page((unsigned long) pa_curr);
+			freed++;
+			pa_curr = npa;
+		}
+
+		pa_last = pa_curr;
+		pa_curr = pa_curr->next;
+	}
+
+	spin_unlock(&cmm_lock);
+	cmm_dbg("Released %ld pages in the search range.\n", freed);
+
+	return 0;
+}
+
+/**
+ * cmm_memory_cb - Handle memory hotplug notifier calls
+ * @self:	notifier block struct
+ * @action:	action to take
+ * @arg:	struct memory_notify data for handler
+ *
+ * Return value:
+ *	NOTIFY_OK or notifier error based on subfunction return value
+ *
+ **/
+static int cmm_memory_cb(struct notifier_block *self,
+			unsigned long action, void *arg)
+{
+	int ret = 0;
+
+	switch (action) {
+	case MEM_GOING_OFFLINE:
+		mutex_lock(&hotplug_mutex);
+		hotplug_occurred = 1;
+		ret = cmm_mem_going_offline(arg);
+		break;
+	case MEM_OFFLINE:
+	case MEM_CANCEL_OFFLINE:
+		mutex_unlock(&hotplug_mutex);
+		cmm_dbg("Memory offline operation complete.\n");
+		break;
+	case MEM_GOING_ONLINE:
+	case MEM_ONLINE:
+	case MEM_CANCEL_ONLINE:
+		break;
+	}
+
+	if (ret)
+		ret = notifier_from_errno(ret);
+	else
+		ret = NOTIFY_OK;
+
+	return ret;
+}
+
+static struct notifier_block cmm_mem_nb = {
+	.notifier_call = cmm_memory_cb,
+	.priority = CMM_MEM_HOTPLUG_PRI
+};
+
+/**
  * cmm_init - Module initialization
  *
  * Return value:
@@ -426,18 +669,24 @@ static int cmm_init(void)
 	if ((rc = cmm_sysfs_register(&cmm_sysdev)))
 		goto out_reboot_notifier;
 
+	if (register_memory_notifier(&cmm_mem_nb) ||
+	    register_memory_isolate_notifier(&cmm_mem_isolate_nb))
+		goto out_unregister_notifier;
+
 	if (cmm_disabled)
 		return rc;
 
 	cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
 	if (IS_ERR(cmm_thread_ptr)) {
 		rc = PTR_ERR(cmm_thread_ptr);
-		goto out_unregister_sysfs;
+		goto out_unregister_notifier;
 	}
 
 	return rc;
 
-out_unregister_sysfs:
+out_unregister_notifier:
+	unregister_memory_notifier(&cmm_mem_nb);
+	unregister_memory_isolate_notifier(&cmm_mem_isolate_nb);
 	cmm_unregister_sysfs(&cmm_sysdev);
 out_reboot_notifier:
 	unregister_reboot_notifier(&cmm_reboot_nb);
@@ -458,6 +707,8 @@ static void cmm_exit(void)
 		kthread_stop(cmm_thread_ptr);
 	unregister_oom_notifier(&cmm_oom_nb);
 	unregister_reboot_notifier(&cmm_reboot_nb);
+	unregister_memory_notifier(&cmm_mem_nb);
+	unregister_memory_isolate_notifier(&cmm_mem_isolate_nb);
 	cmm_free_pages(loaned_pages);
 	cmm_unregister_sysfs(&cmm_sysdev);
 }
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
new file mode 100644
index 000000000000..37bce52526da
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -0,0 +1,548 @@
+/*
+ * Support for dynamic reconfiguration for PCI, Memory, and CPU
+ * Hotplug and Dynamic Logical Partitioning on RPA platforms.
+ *
+ * Copyright (C) 2009 Nathan Fontenot
+ * Copyright (C) 2009 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/kref.h>
+#include <linux/notifier.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/cpu.h>
+#include "offline_states.h"
+
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/uaccess.h>
+#include <asm/rtas.h>
+#include <asm/pSeries_reconfig.h>
+
+struct cc_workarea {
+	u32	drc_index;
+	u32	zero;
+	u32	name_offset;
+	u32	prop_length;
+	u32	prop_offset;
+};
+
+static void dlpar_free_cc_property(struct property *prop)
+{
+	kfree(prop->name);
+	kfree(prop->value);
+	kfree(prop);
+}
+
+static struct property *dlpar_parse_cc_property(struct cc_workarea *ccwa)
+{
+	struct property *prop;
+	char *name;
+	char *value;
+
+	prop = kzalloc(sizeof(*prop), GFP_KERNEL);
+	if (!prop)
+		return NULL;
+
+	name = (char *)ccwa + ccwa->name_offset;
+	prop->name = kstrdup(name, GFP_KERNEL);
+
+	prop->length = ccwa->prop_length;
+	value = (char *)ccwa + ccwa->prop_offset;
+	prop->value = kzalloc(prop->length, GFP_KERNEL);
+	if (!prop->value) {
+		dlpar_free_cc_property(prop);
+		return NULL;
+	}
+
+	memcpy(prop->value, value, prop->length);
+	return prop;
+}
+
+static struct device_node *dlpar_parse_cc_node(struct cc_workarea *ccwa)
+{
+	struct device_node *dn;
+	char *name;
+
+	dn = kzalloc(sizeof(*dn), GFP_KERNEL);
+	if (!dn)
+		return NULL;
+
+	/* The configure connector reported name does not contain a
+	 * preceeding '/', so we allocate a buffer large enough to
+	 * prepend this to the full_name.
+	 */
+	name = (char *)ccwa + ccwa->name_offset;
+	dn->full_name = kmalloc(strlen(name) + 2, GFP_KERNEL);
+	if (!dn->full_name) {
+		kfree(dn);
+		return NULL;
+	}
+
+	sprintf(dn->full_name, "/%s", name);
+	return dn;
+}
+
+static void dlpar_free_one_cc_node(struct device_node *dn)
+{
+	struct property *prop;
+
+	while (dn->properties) {
+		prop = dn->properties;
+		dn->properties = prop->next;
+		dlpar_free_cc_property(prop);
+	}
+
+	kfree(dn->full_name);
+	kfree(dn);
+}
+
+static void dlpar_free_cc_nodes(struct device_node *dn)
+{
+	if (dn->child)
+		dlpar_free_cc_nodes(dn->child);
+
+	if (dn->sibling)
+		dlpar_free_cc_nodes(dn->sibling);
+
+	dlpar_free_one_cc_node(dn);
+}
+
+#define NEXT_SIBLING    1
+#define NEXT_CHILD      2
+#define NEXT_PROPERTY   3
+#define PREV_PARENT     4
+#define MORE_MEMORY     5
+#define CALL_AGAIN	-2
+#define ERR_CFG_USE     -9003
+
+struct device_node *dlpar_configure_connector(u32 drc_index)
+{
+	struct device_node *dn;
+	struct device_node *first_dn = NULL;
+	struct device_node *last_dn = NULL;
+	struct property *property;
+	struct property *last_property = NULL;
+	struct cc_workarea *ccwa;
+	int cc_token;
+	int rc;
+
+	cc_token = rtas_token("ibm,configure-connector");
+	if (cc_token == RTAS_UNKNOWN_SERVICE)
+		return NULL;
+
+	spin_lock(&rtas_data_buf_lock);
+	ccwa = (struct cc_workarea *)&rtas_data_buf[0];
+	ccwa->drc_index = drc_index;
+	ccwa->zero = 0;
+
+	rc = rtas_call(cc_token, 2, 1, NULL, rtas_data_buf, NULL);
+	while (rc) {
+		switch (rc) {
+		case NEXT_SIBLING:
+			dn = dlpar_parse_cc_node(ccwa);
+			if (!dn)
+				goto cc_error;
+
+			dn->parent = last_dn->parent;
+			last_dn->sibling = dn;
+			last_dn = dn;
+			break;
+
+		case NEXT_CHILD:
+			dn = dlpar_parse_cc_node(ccwa);
+			if (!dn)
+				goto cc_error;
+
+			if (!first_dn)
+				first_dn = dn;
+			else {
+				dn->parent = last_dn;
+				if (last_dn)
+					last_dn->child = dn;
+			}
+
+			last_dn = dn;
+			break;
+
+		case NEXT_PROPERTY:
+			property = dlpar_parse_cc_property(ccwa);
+			if (!property)
+				goto cc_error;
+
+			if (!last_dn->properties)
+				last_dn->properties = property;
+			else
+				last_property->next = property;
+
+			last_property = property;
+			break;
+
+		case PREV_PARENT:
+			last_dn = last_dn->parent;
+			break;
+
+		case CALL_AGAIN:
+			break;
+
+		case MORE_MEMORY:
+		case ERR_CFG_USE:
+		default:
+			printk(KERN_ERR "Unexpected Error (%d) "
+			       "returned from configure-connector\n", rc);
+			goto cc_error;
+		}
+
+		rc = rtas_call(cc_token, 2, 1, NULL, rtas_data_buf, NULL);
+	}
+
+	spin_unlock(&rtas_data_buf_lock);
+	return first_dn;
+
+cc_error:
+	if (first_dn)
+		dlpar_free_cc_nodes(first_dn);
+	spin_unlock(&rtas_data_buf_lock);
+	return NULL;
+}
+
+static struct device_node *derive_parent(const char *path)
+{
+	struct device_node *parent;
+	char *last_slash;
+
+	last_slash = strrchr(path, '/');
+	if (last_slash == path) {
+		parent = of_find_node_by_path("/");
+	} else {
+		char *parent_path;
+		int parent_path_len = last_slash - path + 1;
+		parent_path = kmalloc(parent_path_len, GFP_KERNEL);
+		if (!parent_path)
+			return NULL;
+
+		strlcpy(parent_path, path, parent_path_len);
+		parent = of_find_node_by_path(parent_path);
+		kfree(parent_path);
+	}
+
+	return parent;
+}
+
+int dlpar_attach_node(struct device_node *dn)
+{
+#ifdef CONFIG_PROC_DEVICETREE
+	struct proc_dir_entry *ent;
+#endif
+	int rc;
+
+	of_node_set_flag(dn, OF_DYNAMIC);
+	kref_init(&dn->kref);
+	dn->parent = derive_parent(dn->full_name);
+	if (!dn->parent)
+		return -ENOMEM;
+
+	rc = blocking_notifier_call_chain(&pSeries_reconfig_chain,
+					  PSERIES_RECONFIG_ADD, dn);
+	if (rc == NOTIFY_BAD) {
+		printk(KERN_ERR "Failed to add device node %s\n",
+		       dn->full_name);
+		return -ENOMEM; /* For now, safe to assume kmalloc failure */
+	}
+
+	of_attach_node(dn);
+
+#ifdef CONFIG_PROC_DEVICETREE
+	ent = proc_mkdir(strrchr(dn->full_name, '/') + 1, dn->parent->pde);
+	if (ent)
+		proc_device_tree_add_node(dn, ent);
+#endif
+
+	of_node_put(dn->parent);
+	return 0;
+}
+
+int dlpar_detach_node(struct device_node *dn)
+{
+#ifdef CONFIG_PROC_DEVICETREE
+	struct device_node *parent = dn->parent;
+	struct property *prop = dn->properties;
+
+	while (prop) {
+		remove_proc_entry(prop->name, dn->pde);
+		prop = prop->next;
+	}
+
+	if (dn->pde)
+		remove_proc_entry(dn->pde->name, parent->pde);
+#endif
+
+	blocking_notifier_call_chain(&pSeries_reconfig_chain,
+			    PSERIES_RECONFIG_REMOVE, dn);
+	of_detach_node(dn);
+	of_node_put(dn); /* Must decrement the refcount */
+
+	return 0;
+}
+
+#define DR_ENTITY_SENSE		9003
+#define DR_ENTITY_PRESENT	1
+#define DR_ENTITY_UNUSABLE	2
+#define ALLOCATION_STATE	9003
+#define ALLOC_UNUSABLE		0
+#define ALLOC_USABLE		1
+#define ISOLATION_STATE		9001
+#define ISOLATE			0
+#define UNISOLATE		1
+
+int dlpar_acquire_drc(u32 drc_index)
+{
+	int dr_status, rc;
+
+	rc = rtas_call(rtas_token("get-sensor-state"), 2, 2, &dr_status,
+		       DR_ENTITY_SENSE, drc_index);
+	if (rc || dr_status != DR_ENTITY_UNUSABLE)
+		return -1;
+
+	rc = rtas_set_indicator(ALLOCATION_STATE, drc_index, ALLOC_USABLE);
+	if (rc)
+		return rc;
+
+	rc = rtas_set_indicator(ISOLATION_STATE, drc_index, UNISOLATE);
+	if (rc) {
+		rtas_set_indicator(ALLOCATION_STATE, drc_index, ALLOC_UNUSABLE);
+		return rc;
+	}
+
+	return 0;
+}
+
+int dlpar_release_drc(u32 drc_index)
+{
+	int dr_status, rc;
+
+	rc = rtas_call(rtas_token("get-sensor-state"), 2, 2, &dr_status,
+		       DR_ENTITY_SENSE, drc_index);
+	if (rc || dr_status != DR_ENTITY_PRESENT)
+		return -1;
+
+	rc = rtas_set_indicator(ISOLATION_STATE, drc_index, ISOLATE);
+	if (rc)
+		return rc;
+
+	rc = rtas_set_indicator(ALLOCATION_STATE, drc_index, ALLOC_UNUSABLE);
+	if (rc) {
+		rtas_set_indicator(ISOLATION_STATE, drc_index, UNISOLATE);
+		return rc;
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
+
+static int dlpar_online_cpu(struct device_node *dn)
+{
+	int rc = 0;
+	unsigned int cpu;
+	int len, nthreads, i;
+	const u32 *intserv;
+
+	intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len);
+	if (!intserv)
+		return -EINVAL;
+
+	nthreads = len / sizeof(u32);
+
+	cpu_maps_update_begin();
+	for (i = 0; i < nthreads; i++) {
+		for_each_present_cpu(cpu) {
+			if (get_hard_smp_processor_id(cpu) != intserv[i])
+				continue;
+			BUG_ON(get_cpu_current_state(cpu)
+					!= CPU_STATE_OFFLINE);
+			cpu_maps_update_done();
+			rc = cpu_up(cpu);
+			if (rc)
+				goto out;
+			cpu_maps_update_begin();
+
+			break;
+		}
+		if (cpu == num_possible_cpus())
+			printk(KERN_WARNING "Could not find cpu to online "
+			       "with physical id 0x%x\n", intserv[i]);
+	}
+	cpu_maps_update_done();
+
+out:
+	return rc;
+
+}
+
+static ssize_t dlpar_cpu_probe(const char *buf, size_t count)
+{
+	struct device_node *dn;
+	unsigned long drc_index;
+	char *cpu_name;
+	int rc;
+
+	cpu_hotplug_driver_lock();
+	rc = strict_strtoul(buf, 0, &drc_index);
+	if (rc) {
+		rc = -EINVAL;
+		goto out;
+	}
+
+	dn = dlpar_configure_connector(drc_index);
+	if (!dn) {
+		rc = -EINVAL;
+		goto out;
+	}
+
+	/* configure-connector reports cpus as living in the base
+	 * directory of the device tree.  CPUs actually live in the
+	 * cpus directory so we need to fixup the full_name.
+	 */
+	cpu_name = kzalloc(strlen(dn->full_name) + strlen("/cpus") + 1,
+			   GFP_KERNEL);
+	if (!cpu_name) {
+		dlpar_free_cc_nodes(dn);
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	sprintf(cpu_name, "/cpus%s", dn->full_name);
+	kfree(dn->full_name);
+	dn->full_name = cpu_name;
+
+	rc = dlpar_acquire_drc(drc_index);
+	if (rc) {
+		dlpar_free_cc_nodes(dn);
+		rc = -EINVAL;
+		goto out;
+	}
+
+	rc = dlpar_attach_node(dn);
+	if (rc) {
+		dlpar_release_drc(drc_index);
+		dlpar_free_cc_nodes(dn);
+	}
+
+	rc = dlpar_online_cpu(dn);
+out:
+	cpu_hotplug_driver_unlock();
+
+	return rc ? rc : count;
+}
+
+static int dlpar_offline_cpu(struct device_node *dn)
+{
+	int rc = 0;
+	unsigned int cpu;
+	int len, nthreads, i;
+	const u32 *intserv;
+
+	intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len);
+	if (!intserv)
+		return -EINVAL;
+
+	nthreads = len / sizeof(u32);
+
+	cpu_maps_update_begin();
+	for (i = 0; i < nthreads; i++) {
+		for_each_present_cpu(cpu) {
+			if (get_hard_smp_processor_id(cpu) != intserv[i])
+				continue;
+
+			if (get_cpu_current_state(cpu) == CPU_STATE_OFFLINE)
+				break;
+
+			if (get_cpu_current_state(cpu) == CPU_STATE_ONLINE) {
+				cpu_maps_update_done();
+				rc = cpu_down(cpu);
+				if (rc)
+					goto out;
+				cpu_maps_update_begin();
+				break;
+
+			}
+
+			/*
+			 * The cpu is in CPU_STATE_INACTIVE.
+			 * Upgrade it's state to CPU_STATE_OFFLINE.
+			 */
+			set_preferred_offline_state(cpu, CPU_STATE_OFFLINE);
+			BUG_ON(plpar_hcall_norets(H_PROD, intserv[i])
+								!= H_SUCCESS);
+			__cpu_die(cpu);
+			break;
+		}
+		if (cpu == num_possible_cpus())
+			printk(KERN_WARNING "Could not find cpu to offline "
+			       "with physical id 0x%x\n", intserv[i]);
+	}
+	cpu_maps_update_done();
+
+out:
+	return rc;
+
+}
+
+static ssize_t dlpar_cpu_release(const char *buf, size_t count)
+{
+	struct device_node *dn;
+	const u32 *drc_index;
+	int rc;
+
+	dn = of_find_node_by_path(buf);
+	if (!dn)
+		return -EINVAL;
+
+	drc_index = of_get_property(dn, "ibm,my-drc-index", NULL);
+	if (!drc_index) {
+		of_node_put(dn);
+		return -EINVAL;
+	}
+
+	cpu_hotplug_driver_lock();
+	rc = dlpar_offline_cpu(dn);
+	if (rc) {
+		of_node_put(dn);
+		rc = -EINVAL;
+		goto out;
+	}
+
+	rc = dlpar_release_drc(*drc_index);
+	if (rc) {
+		of_node_put(dn);
+		goto out;
+	}
+
+	rc = dlpar_detach_node(dn);
+	if (rc) {
+		dlpar_acquire_drc(*drc_index);
+		goto out;
+	}
+
+	of_node_put(dn);
+out:
+	cpu_hotplug_driver_unlock();
+	return rc ? rc : count;
+}
+
+static int __init pseries_dlpar_init(void)
+{
+	ppc_md.cpu_probe = dlpar_cpu_probe;
+	ppc_md.cpu_release = dlpar_cpu_release;
+
+	return 0;
+}
+machine_device_initcall(pseries, pseries_dlpar_init);
+
+#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c
index 937a544a236d..c5f3116b6ca5 100644
--- a/arch/powerpc/platforms/pseries/dtl.c
+++ b/arch/powerpc/platforms/pseries/dtl.c
@@ -54,7 +54,7 @@ struct dtl {
 	int			buf_entries;
 	u64			last_idx;
 };
-static DEFINE_PER_CPU(struct dtl, dtl);
+static DEFINE_PER_CPU(struct dtl, cpu_dtl);
 
 /*
  * Dispatch trace log event mask:
@@ -261,7 +261,7 @@ static int dtl_init(void)
 
 	/* set up the per-cpu log structures */
 	for_each_possible_cpu(i) {
-		struct dtl *dtl = &per_cpu(dtl, i);
+		struct dtl *dtl = &per_cpu(cpu_dtl, i);
 		dtl->cpu = i;
 
 		rc = dtl_setup_file(dtl);
diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index 0e8db6771252..ef8e45448480 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -63,22 +63,6 @@ static void print_device_node_tree(struct pci_dn *pdn, int dent)
 }
 #endif
 
-/** 
- * irq_in_use - return true if this irq is being used 
- */
-static int irq_in_use(unsigned int irq)
-{
-	int rc = 0;
-	unsigned long flags;
-   struct irq_desc *desc = irq_desc + irq;
-
-	spin_lock_irqsave(&desc->lock, flags);
-	if (desc->action)
-		rc = 1;
-	spin_unlock_irqrestore(&desc->lock, flags);
-	return rc;
-}
-
 /**
  * eeh_disable_irq - disable interrupt for the recovering device
  */
@@ -93,7 +77,7 @@ static void eeh_disable_irq(struct pci_dev *dev)
 	if (dev->msi_enabled || dev->msix_enabled)
 		return;
 
-	if (!irq_in_use(dev->irq))
+	if (!irq_has_action(dev->irq))
 		return;
 
 	PCI_DN(dn)->eeh_mode |= EEH_MODE_IRQ_DISABLED;
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index ebff6d9a4e39..6ea4698d9176 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -30,6 +30,7 @@
 #include <asm/pSeries_reconfig.h>
 #include "xics.h"
 #include "plpar_wrappers.h"
+#include "offline_states.h"
 
 /* This version can't take the spinlock, because it never returns */
 static struct rtas_args rtas_stop_self_args = {
@@ -39,6 +40,55 @@ static struct rtas_args rtas_stop_self_args = {
 	.rets = &rtas_stop_self_args.args[0],
 };
 
+static DEFINE_PER_CPU(enum cpu_state_vals, preferred_offline_state) =
+							CPU_STATE_OFFLINE;
+static DEFINE_PER_CPU(enum cpu_state_vals, current_state) = CPU_STATE_OFFLINE;
+
+static enum cpu_state_vals default_offline_state = CPU_STATE_OFFLINE;
+
+static int cede_offline_enabled __read_mostly = 1;
+
+/*
+ * Enable/disable cede_offline when available.
+ */
+static int __init setup_cede_offline(char *str)
+{
+	if (!strcmp(str, "off"))
+		cede_offline_enabled = 0;
+	else if (!strcmp(str, "on"))
+		cede_offline_enabled = 1;
+	else
+		return 0;
+	return 1;
+}
+
+__setup("cede_offline=", setup_cede_offline);
+
+enum cpu_state_vals get_cpu_current_state(int cpu)
+{
+	return per_cpu(current_state, cpu);
+}
+
+void set_cpu_current_state(int cpu, enum cpu_state_vals state)
+{
+	per_cpu(current_state, cpu) = state;
+}
+
+enum cpu_state_vals get_preferred_offline_state(int cpu)
+{
+	return per_cpu(preferred_offline_state, cpu);
+}
+
+void set_preferred_offline_state(int cpu, enum cpu_state_vals state)
+{
+	per_cpu(preferred_offline_state, cpu) = state;
+}
+
+void set_default_offline_state(int cpu)
+{
+	per_cpu(preferred_offline_state, cpu) = default_offline_state;
+}
+
 static void rtas_stop_self(void)
 {
 	struct rtas_args *args = &rtas_stop_self_args;
@@ -56,11 +106,61 @@ static void rtas_stop_self(void)
 
 static void pseries_mach_cpu_die(void)
 {
+	unsigned int cpu = smp_processor_id();
+	unsigned int hwcpu = hard_smp_processor_id();
+	u8 cede_latency_hint = 0;
+
 	local_irq_disable();
 	idle_task_exit();
 	xics_teardown_cpu();
-	unregister_slb_shadow(hard_smp_processor_id(), __pa(get_slb_shadow()));
-	rtas_stop_self();
+
+	if (get_preferred_offline_state(cpu) == CPU_STATE_INACTIVE) {
+		set_cpu_current_state(cpu, CPU_STATE_INACTIVE);
+		cede_latency_hint = 2;
+
+		get_lppaca()->idle = 1;
+		if (!get_lppaca()->shared_proc)
+			get_lppaca()->donate_dedicated_cpu = 1;
+
+		printk(KERN_INFO
+			"cpu %u (hwid %u) ceding for offline with hint %d\n",
+			cpu, hwcpu, cede_latency_hint);
+		while (get_preferred_offline_state(cpu) == CPU_STATE_INACTIVE) {
+			extended_cede_processor(cede_latency_hint);
+			printk(KERN_INFO "cpu %u (hwid %u) returned from cede.\n",
+				cpu, hwcpu);
+			printk(KERN_INFO
+			"Decrementer value = %x Timebase value = %llx\n",
+			get_dec(), get_tb());
+		}
+
+		printk(KERN_INFO "cpu %u (hwid %u) got prodded to go online\n",
+			cpu, hwcpu);
+
+		if (!get_lppaca()->shared_proc)
+			get_lppaca()->donate_dedicated_cpu = 0;
+		get_lppaca()->idle = 0;
+	}
+
+	if (get_preferred_offline_state(cpu) == CPU_STATE_ONLINE) {
+		unregister_slb_shadow(hwcpu, __pa(get_slb_shadow()));
+
+		/*
+		 * NOTE: Calling start_secondary() here for now to
+		 * start new context.
+		 * However, need to do it cleanly by resetting the
+		 * stack pointer.
+		 */
+		start_secondary();
+
+	} else if (get_preferred_offline_state(cpu) == CPU_STATE_OFFLINE) {
+
+		set_cpu_current_state(cpu, CPU_STATE_OFFLINE);
+		unregister_slb_shadow(hard_smp_processor_id(),
+					__pa(get_slb_shadow()));
+		rtas_stop_self();
+	}
+
 	/* Should never get here... */
 	BUG();
 	for(;;);
@@ -106,18 +206,43 @@ static int pseries_cpu_disable(void)
 	return 0;
 }
 
+/*
+ * pseries_cpu_die: Wait for the cpu to die.
+ * @cpu: logical processor id of the CPU whose death we're awaiting.
+ *
+ * This function is called from the context of the thread which is performing
+ * the cpu-offline. Here we wait for long enough to allow the cpu in question
+ * to self-destroy so that the cpu-offline thread can send the CPU_DEAD
+ * notifications.
+ *
+ * OTOH, pseries_mach_cpu_die() is called by the @cpu when it wants to
+ * self-destruct.
+ */
 static void pseries_cpu_die(unsigned int cpu)
 {
 	int tries;
-	int cpu_status;
+	int cpu_status = 1;
 	unsigned int pcpu = get_hard_smp_processor_id(cpu);
 
-	for (tries = 0; tries < 25; tries++) {
-		cpu_status = query_cpu_stopped(pcpu);
-		if (cpu_status == 0 || cpu_status == -1)
-			break;
-		cpu_relax();
+	if (get_preferred_offline_state(cpu) == CPU_STATE_INACTIVE) {
+		cpu_status = 1;
+		for (tries = 0; tries < 1000; tries++) {
+			if (get_cpu_current_state(cpu) == CPU_STATE_INACTIVE) {
+				cpu_status = 0;
+				break;
+			}
+			cpu_relax();
+		}
+	} else if (get_preferred_offline_state(cpu) == CPU_STATE_OFFLINE) {
+
+		for (tries = 0; tries < 25; tries++) {
+			cpu_status = query_cpu_stopped(pcpu);
+			if (cpu_status == 0 || cpu_status == -1)
+				break;
+			cpu_relax();
+		}
 	}
+
 	if (cpu_status != 0) {
 		printk("Querying DEAD? cpu %i (%i) shows %i\n",
 		       cpu, pcpu, cpu_status);
@@ -252,10 +377,41 @@ static struct notifier_block pseries_smp_nb = {
 	.notifier_call = pseries_smp_notifier,
 };
 
+#define MAX_CEDE_LATENCY_LEVELS		4
+#define	CEDE_LATENCY_PARAM_LENGTH	10
+#define CEDE_LATENCY_PARAM_MAX_LENGTH	\
+	(MAX_CEDE_LATENCY_LEVELS * CEDE_LATENCY_PARAM_LENGTH * sizeof(char))
+#define CEDE_LATENCY_TOKEN		45
+
+static char cede_parameters[CEDE_LATENCY_PARAM_MAX_LENGTH];
+
+static int parse_cede_parameters(void)
+{
+	int call_status;
+
+	memset(cede_parameters, 0, CEDE_LATENCY_PARAM_MAX_LENGTH);
+	call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
+				NULL,
+				CEDE_LATENCY_TOKEN,
+				__pa(cede_parameters),
+				CEDE_LATENCY_PARAM_MAX_LENGTH);
+
+	if (call_status != 0)
+		printk(KERN_INFO "CEDE_LATENCY: \
+			%s %s Error calling get-system-parameter(0x%x)\n",
+			__FILE__, __func__, call_status);
+	else
+		printk(KERN_INFO "CEDE_LATENCY: \
+			get-system-parameter successful.\n");
+
+	return call_status;
+}
+
 static int __init pseries_cpu_hotplug_init(void)
 {
 	struct device_node *np;
 	const char *typep;
+	int cpu;
 
 	for_each_node_by_name(np, "interrupt-controller") {
 		typep = of_get_property(np, "compatible", NULL);
@@ -283,8 +439,16 @@ static int __init pseries_cpu_hotplug_init(void)
 	smp_ops->cpu_die = pseries_cpu_die;
 
 	/* Processors can be added/removed only on LPAR */
-	if (firmware_has_feature(FW_FEATURE_LPAR))
+	if (firmware_has_feature(FW_FEATURE_LPAR)) {
 		pSeries_reconfig_notifier_register(&pseries_smp_nb);
+		cpu_maps_update_begin();
+		if (cede_offline_enabled && parse_cede_parameters() == 0) {
+			default_offline_state = CPU_STATE_INACTIVE;
+			for_each_online_cpu(cpu)
+				set_default_offline_state(cpu);
+		}
+		cpu_maps_update_done();
+	}
 
 	return 0;
 }
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index c1427b3634ec..383a5d0e9818 100644
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -14,68 +14,94 @@
 	
 #define STK_PARM(i)     (48 + ((i)-3)*8)
 
-#ifdef CONFIG_HCALL_STATS
+#ifdef CONFIG_TRACEPOINTS
+
+	.section	".toc","aw"
+
+	.globl hcall_tracepoint_refcount
+hcall_tracepoint_refcount:
+	.llong	0
+
+	.section	".text"
+
 /*
  * precall must preserve all registers.  use unused STK_PARM()
- * areas to save snapshots and opcode.
+ * areas to save snapshots and opcode. We branch around this
+ * in early init (eg when populating the MMU hashtable) by using an
+ * unconditional cpu feature.
  */
-#define HCALL_INST_PRECALL					\
-	std	r3,STK_PARM(r3)(r1);	/* save opcode */	\
-	mftb	r0;			/* get timebase and */	\
-	std     r0,STK_PARM(r5)(r1);	/* save for later */	\
+#define HCALL_INST_PRECALL(FIRST_REG)				\
 BEGIN_FTR_SECTION;						\
-	mfspr	r0,SPRN_PURR;		/* get PURR and */	\
-	std	r0,STK_PARM(r6)(r1);	/* save for later */	\
-END_FTR_SECTION_IFSET(CPU_FTR_PURR);
-	
+	b	1f;						\
+END_FTR_SECTION(0, 1);						\
+	ld      r12,hcall_tracepoint_refcount@toc(r2);		\
+	cmpdi	r12,0;						\
+	beq+	1f;						\
+	mflr	r0;						\
+	std	r3,STK_PARM(r3)(r1);				\
+	std	r4,STK_PARM(r4)(r1);				\
+	std	r5,STK_PARM(r5)(r1);				\
+	std	r6,STK_PARM(r6)(r1);				\
+	std	r7,STK_PARM(r7)(r1);				\
+	std	r8,STK_PARM(r8)(r1);				\
+	std	r9,STK_PARM(r9)(r1);				\
+	std	r10,STK_PARM(r10)(r1);				\
+	std	r0,16(r1);					\
+	addi	r4,r1,STK_PARM(FIRST_REG);			\
+	stdu	r1,-STACK_FRAME_OVERHEAD(r1);			\
+	bl	.__trace_hcall_entry;				\
+	addi	r1,r1,STACK_FRAME_OVERHEAD;			\
+	ld	r0,16(r1);					\
+	ld	r3,STK_PARM(r3)(r1);				\
+	ld	r4,STK_PARM(r4)(r1);				\
+	ld	r5,STK_PARM(r5)(r1);				\
+	ld	r6,STK_PARM(r6)(r1);				\
+	ld	r7,STK_PARM(r7)(r1);				\
+	ld	r8,STK_PARM(r8)(r1);				\
+	ld	r9,STK_PARM(r9)(r1);				\
+	ld	r10,STK_PARM(r10)(r1);				\
+	mtlr	r0;						\
+1:
+
 /*
  * postcall is performed immediately before function return which
  * allows liberal use of volatile registers.  We branch around this
  * in early init (eg when populating the MMU hashtable) by using an
  * unconditional cpu feature.
  */
-#define HCALL_INST_POSTCALL					\
+#define __HCALL_INST_POSTCALL					\
 BEGIN_FTR_SECTION;						\
 	b	1f;						\
 END_FTR_SECTION(0, 1);						\
-	ld	r4,STK_PARM(r3)(r1);	/* validate opcode */	\
-	cmpldi	cr7,r4,MAX_HCALL_OPCODE;			\
-	bgt-	cr7,1f;						\
-								\
-	/* get time and PURR snapshots after hcall */		\
-	mftb	r7;			/* timebase after */	\
-BEGIN_FTR_SECTION;						\
-	mfspr	r8,SPRN_PURR;		/* PURR after */	\
-	ld	r6,STK_PARM(r6)(r1);	/* PURR before */	\
-	subf	r6,r6,r8;		/* delta */		\
-END_FTR_SECTION_IFSET(CPU_FTR_PURR);				\
-	ld	r5,STK_PARM(r5)(r1);	/* timebase before */	\
-	subf	r5,r5,r7;		/* time delta */	\
-								\
-	/* calculate address of stat structure r4 = opcode */	\
-	srdi	r4,r4,2;		/* index into array */	\
-	mulli	r4,r4,HCALL_STAT_SIZE;				\
-	LOAD_REG_ADDR(r7, per_cpu__hcall_stats);		\
-	add	r4,r4,r7;					\
-	ld	r7,PACA_DATA_OFFSET(r13); /* per cpu offset */	\
-	add	r4,r4,r7;					\
-								\
-	/* update stats	*/					\
-	ld	r7,HCALL_STAT_CALLS(r4); /* count */		\
-	addi	r7,r7,1;					\
-	std	r7,HCALL_STAT_CALLS(r4);			\
-	ld      r7,HCALL_STAT_TB(r4);	/* timebase */		\
-	add	r7,r7,r5;					\
-	std	r7,HCALL_STAT_TB(r4);				\
-BEGIN_FTR_SECTION;						\
-	ld	r7,HCALL_STAT_PURR(r4);	/* PURR */		\
-	add	r7,r7,r6;					\
-	std	r7,HCALL_STAT_PURR(r4);				\
-END_FTR_SECTION_IFSET(CPU_FTR_PURR);				\
+	ld      r12,hcall_tracepoint_refcount@toc(r2);		\
+	cmpdi	r12,0;						\
+	beq+	1f;						\
+	mflr	r0;						\
+	ld	r6,STK_PARM(r3)(r1);				\
+	std	r3,STK_PARM(r3)(r1);				\
+	mr	r4,r3;						\
+	mr	r3,r6;						\
+	std	r0,16(r1);					\
+	stdu	r1,-STACK_FRAME_OVERHEAD(r1);			\
+	bl	.__trace_hcall_exit;				\
+	addi	r1,r1,STACK_FRAME_OVERHEAD;			\
+	ld	r0,16(r1);					\
+	ld	r3,STK_PARM(r3)(r1);				\
+	mtlr	r0;						\
 1:
+
+#define HCALL_INST_POSTCALL_NORETS				\
+	li	r5,0;						\
+	__HCALL_INST_POSTCALL
+
+#define HCALL_INST_POSTCALL(BUFREG)				\
+	mr	r5,BUFREG;					\
+	__HCALL_INST_POSTCALL
+
 #else
-#define HCALL_INST_PRECALL
-#define HCALL_INST_POSTCALL
+#define HCALL_INST_PRECALL(FIRST_ARG)
+#define HCALL_INST_POSTCALL_NORETS
+#define HCALL_INST_POSTCALL(BUFREG)
 #endif
 
 	.text
@@ -86,11 +112,11 @@ _GLOBAL(plpar_hcall_norets)
 	mfcr	r0
 	stw	r0,8(r1)
 
-	HCALL_INST_PRECALL
+	HCALL_INST_PRECALL(r4)
 
 	HVSC				/* invoke the hypervisor */
 
-	HCALL_INST_POSTCALL
+	HCALL_INST_POSTCALL_NORETS
 
 	lwz	r0,8(r1)
 	mtcrf	0xff,r0
@@ -102,7 +128,7 @@ _GLOBAL(plpar_hcall)
 	mfcr	r0
 	stw	r0,8(r1)
 
-	HCALL_INST_PRECALL
+	HCALL_INST_PRECALL(r5)
 
 	std     r4,STK_PARM(r4)(r1)     /* Save ret buffer */
 
@@ -121,7 +147,7 @@ _GLOBAL(plpar_hcall)
 	std	r6, 16(r12)
 	std	r7, 24(r12)
 
-	HCALL_INST_POSTCALL
+	HCALL_INST_POSTCALL(r12)
 
 	lwz	r0,8(r1)
 	mtcrf	0xff,r0
@@ -168,7 +194,7 @@ _GLOBAL(plpar_hcall9)
 	mfcr	r0
 	stw	r0,8(r1)
 
-	HCALL_INST_PRECALL
+	HCALL_INST_PRECALL(r5)
 
 	std     r4,STK_PARM(r4)(r1)     /* Save ret buffer */
 
@@ -196,7 +222,7 @@ _GLOBAL(plpar_hcall9)
 	std	r11,56(r12)
 	std	r0, 64(r12)
 
-	HCALL_INST_POSTCALL
+	HCALL_INST_POSTCALL(r12)
 
 	lwz	r0,8(r1)
 	mtcrf	0xff,r0
diff --git a/arch/powerpc/platforms/pseries/hvCall_inst.c b/arch/powerpc/platforms/pseries/hvCall_inst.c
index 3631a4f277eb..2f58c71b7259 100644
--- a/arch/powerpc/platforms/pseries/hvCall_inst.c
+++ b/arch/powerpc/platforms/pseries/hvCall_inst.c
@@ -26,6 +26,7 @@
 #include <asm/hvcall.h>
 #include <asm/firmware.h>
 #include <asm/cputable.h>
+#include <asm/trace.h>
 
 DEFINE_PER_CPU(struct hcall_stats[HCALL_STAT_ARRAY_SIZE], hcall_stats);
 
@@ -100,6 +101,35 @@ static const struct file_operations hcall_inst_seq_fops = {
 #define	HCALL_ROOT_DIR		"hcall_inst"
 #define CPU_NAME_BUF_SIZE	32
 
+
+static void probe_hcall_entry(unsigned long opcode, unsigned long *args)
+{
+	struct hcall_stats *h;
+
+	if (opcode > MAX_HCALL_OPCODE)
+		return;
+
+	h = &get_cpu_var(hcall_stats)[opcode / 4];
+	h->tb_start = mftb();
+	h->purr_start = mfspr(SPRN_PURR);
+}
+
+static void probe_hcall_exit(unsigned long opcode, unsigned long retval,
+			     unsigned long *retbuf)
+{
+	struct hcall_stats *h;
+
+	if (opcode > MAX_HCALL_OPCODE)
+		return;
+
+	h = &__get_cpu_var(hcall_stats)[opcode / 4];
+	h->num_calls++;
+	h->tb_total = mftb() - h->tb_start;
+	h->purr_total = mfspr(SPRN_PURR) - h->purr_start;
+
+	put_cpu_var(hcall_stats);
+}
+
 static int __init hcall_inst_init(void)
 {
 	struct dentry *hcall_root;
@@ -110,6 +140,14 @@ static int __init hcall_inst_init(void)
 	if (!firmware_has_feature(FW_FEATURE_LPAR))
 		return 0;
 
+	if (register_trace_hcall_entry(probe_hcall_entry))
+		return -EINVAL;
+
+	if (register_trace_hcall_exit(probe_hcall_exit)) {
+		unregister_trace_hcall_entry(probe_hcall_entry);
+		return -EINVAL;
+	}
+
 	hcall_root = debugfs_create_dir(HCALL_ROOT_DIR, NULL);
 	if (!hcall_root)
 		return -ENOMEM;
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 903eb9eec687..0707653612ba 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -39,6 +39,7 @@
 #include <asm/cputable.h>
 #include <asm/udbg.h>
 #include <asm/smp.h>
+#include <asm/trace.h>
 
 #include "plpar_wrappers.h"
 #include "pseries.h"
@@ -661,3 +662,35 @@ void arch_free_page(struct page *page, int order)
 EXPORT_SYMBOL(arch_free_page);
 
 #endif
+
+#ifdef CONFIG_TRACEPOINTS
+/*
+ * We optimise our hcall path by placing hcall_tracepoint_refcount
+ * directly in the TOC so we can check if the hcall tracepoints are
+ * enabled via a single load.
+ */
+
+/* NB: reg/unreg are called while guarded with the tracepoints_mutex */
+extern long hcall_tracepoint_refcount;
+
+void hcall_tracepoint_regfunc(void)
+{
+	hcall_tracepoint_refcount++;
+}
+
+void hcall_tracepoint_unregfunc(void)
+{
+	hcall_tracepoint_refcount--;
+}
+
+void __trace_hcall_entry(unsigned long opcode, unsigned long *args)
+{
+	trace_hcall_entry(opcode, args);
+}
+
+void __trace_hcall_exit(long opcode, unsigned long retval,
+			unsigned long *retbuf)
+{
+	trace_hcall_exit(opcode, retval, retbuf);
+}
+#endif
diff --git a/arch/powerpc/platforms/pseries/offline_states.h b/arch/powerpc/platforms/pseries/offline_states.h
new file mode 100644
index 000000000000..22574e0d9d91
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/offline_states.h
@@ -0,0 +1,18 @@
+#ifndef _OFFLINE_STATES_H_
+#define _OFFLINE_STATES_H_
+
+/* Cpu offline states go here */
+enum cpu_state_vals {
+	CPU_STATE_OFFLINE,
+	CPU_STATE_INACTIVE,
+	CPU_STATE_ONLINE,
+	CPU_MAX_OFFLINE_STATES
+};
+
+extern enum cpu_state_vals get_cpu_current_state(int cpu);
+extern void set_cpu_current_state(int cpu, enum cpu_state_vals state);
+extern enum cpu_state_vals get_preferred_offline_state(int cpu);
+extern void set_preferred_offline_state(int cpu, enum cpu_state_vals state);
+extern void set_default_offline_state(int cpu);
+extern int start_secondary(void);
+#endif
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index a24a6b2333b2..0603c91538ae 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -9,11 +9,33 @@ static inline long poll_pending(void)
 	return plpar_hcall_norets(H_POLL_PENDING);
 }
 
+static inline u8 get_cede_latency_hint(void)
+{
+	return get_lppaca()->gpr5_dword.fields.cede_latency_hint;
+}
+
+static inline void set_cede_latency_hint(u8 latency_hint)
+{
+	get_lppaca()->gpr5_dword.fields.cede_latency_hint = latency_hint;
+}
+
 static inline long cede_processor(void)
 {
 	return plpar_hcall_norets(H_CEDE);
 }
 
+static inline long extended_cede_processor(unsigned long latency_hint)
+{
+	long rc;
+	u8 old_latency_hint = get_cede_latency_hint();
+
+	set_cede_latency_hint(latency_hint);
+	rc = cede_processor();
+	set_cede_latency_hint(old_latency_hint);
+
+	return rc;
+}
+
 static inline long vpa_call(unsigned long flags, unsigned long cpu,
 		unsigned long vpa)
 {
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 2e2bbe120b90..a2305d29bbbd 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -96,7 +96,7 @@ static struct device_node *derive_parent(const char *path)
 	return parent;
 }
 
-static BLOCKING_NOTIFIER_HEAD(pSeries_reconfig_chain);
+BLOCKING_NOTIFIER_HEAD(pSeries_reconfig_chain);
 
 int pSeries_reconfig_notifier_register(struct notifier_block *nb)
 {
@@ -184,7 +184,7 @@ static int pSeries_reconfig_remove_node(struct device_node *np)
 }
 
 /*
- * /proc/ppc64/ofdt - yucky binary interface for adding and removing
+ * /proc/powerpc/ofdt - yucky binary interface for adding and removing
  * OF device nodes.  Should be deprecated as soon as we get an
  * in-kernel wrapper for the RTAS ibm,configure-connector call.
  */
@@ -543,7 +543,7 @@ static const struct file_operations ofdt_fops = {
 	.write = ofdt_write
 };
 
-/* create /proc/ppc64/ofdt write-only by root */
+/* create /proc/powerpc/ofdt write-only by root */
 static int proc_ppc64_create_ofdt(void)
 {
 	struct proc_dir_entry *ent;
@@ -551,7 +551,7 @@ static int proc_ppc64_create_ofdt(void)
 	if (!machine_is(pseries))
 		return 0;
 
-	ent = proc_create("ppc64/ofdt", S_IWUSR, NULL, &ofdt_fops);
+	ent = proc_create("powerpc/ofdt", S_IWUSR, NULL, &ofdt_fops);
 	if (ent)
 		ent->size = 0;
 
diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c
deleted file mode 100644
index b3cbac855924..000000000000
--- a/arch/powerpc/platforms/pseries/rtasd.c
+++ /dev/null
@@ -1,519 +0,0 @@
-/*
- * Copyright (C) 2001 Anton Blanchard <anton@au.ibm.com>, IBM
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Communication to userspace based on kernel/printk.c
- */
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/poll.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/vmalloc.h>
-#include <linux/spinlock.h>
-#include <linux/cpu.h>
-#include <linux/workqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/rtas.h>
-#include <asm/prom.h>
-#include <asm/nvram.h>
-#include <asm/atomic.h>
-#include <asm/machdep.h>
-
-
-static DEFINE_SPINLOCK(rtasd_log_lock);
-
-static DECLARE_WAIT_QUEUE_HEAD(rtas_log_wait);
-
-static char *rtas_log_buf;
-static unsigned long rtas_log_start;
-static unsigned long rtas_log_size;
-
-static int surveillance_timeout = -1;
-static unsigned int rtas_error_log_max;
-static unsigned int rtas_error_log_buffer_max;
-
-/* RTAS service tokens */
-static unsigned int event_scan;
-static unsigned int rtas_event_scan_rate;
-
-static int full_rtas_msgs = 0;
-
-/* Stop logging to nvram after first fatal error */
-static int logging_enabled; /* Until we initialize everything,
-                             * make sure we don't try logging
-                             * anything */
-static int error_log_cnt;
-
-/*
- * Since we use 32 bit RTAS, the physical address of this must be below
- * 4G or else bad things happen. Allocate this in the kernel data and
- * make it big enough.
- */
-static unsigned char logdata[RTAS_ERROR_LOG_MAX];
-
-static char *rtas_type[] = {
-	"Unknown", "Retry", "TCE Error", "Internal Device Failure",
-	"Timeout", "Data Parity", "Address Parity", "Cache Parity",
-	"Address Invalid", "ECC Uncorrected", "ECC Corrupted",
-};
-
-static char *rtas_event_type(int type)
-{
-	if ((type > 0) && (type < 11))
-		return rtas_type[type];
-
-	switch (type) {
-		case RTAS_TYPE_EPOW:
-			return "EPOW";
-		case RTAS_TYPE_PLATFORM:
-			return "Platform Error";
-		case RTAS_TYPE_IO:
-			return "I/O Event";
-		case RTAS_TYPE_INFO:
-			return "Platform Information Event";
-		case RTAS_TYPE_DEALLOC:
-			return "Resource Deallocation Event";
-		case RTAS_TYPE_DUMP:
-			return "Dump Notification Event";
-	}
-
-	return rtas_type[0];
-}
-
-/* To see this info, grep RTAS /var/log/messages and each entry
- * will be collected together with obvious begin/end.
- * There will be a unique identifier on the begin and end lines.
- * This will persist across reboots.
- *
- * format of error logs returned from RTAS:
- * bytes	(size)	: contents
- * --------------------------------------------------------
- * 0-7		(8)	: rtas_error_log
- * 8-47		(40)	: extended info
- * 48-51	(4)	: vendor id
- * 52-1023 (vendor specific) : location code and debug data
- */
-static void printk_log_rtas(char *buf, int len)
-{
-
-	int i,j,n = 0;
-	int perline = 16;
-	char buffer[64];
-	char * str = "RTAS event";
-
-	if (full_rtas_msgs) {
-		printk(RTAS_DEBUG "%d -------- %s begin --------\n",
-		       error_log_cnt, str);
-
-		/*
-		 * Print perline bytes on each line, each line will start
-		 * with RTAS and a changing number, so syslogd will
-		 * print lines that are otherwise the same.  Separate every
-		 * 4 bytes with a space.
-		 */
-		for (i = 0; i < len; i++) {
-			j = i % perline;
-			if (j == 0) {
-				memset(buffer, 0, sizeof(buffer));
-				n = sprintf(buffer, "RTAS %d:", i/perline);
-			}
-
-			if ((i % 4) == 0)
-				n += sprintf(buffer+n, " ");
-
-			n += sprintf(buffer+n, "%02x", (unsigned char)buf[i]);
-
-			if (j == (perline-1))
-				printk(KERN_DEBUG "%s\n", buffer);
-		}
-		if ((i % perline) != 0)
-			printk(KERN_DEBUG "%s\n", buffer);
-
-		printk(RTAS_DEBUG "%d -------- %s end ----------\n",
-		       error_log_cnt, str);
-	} else {
-		struct rtas_error_log *errlog = (struct rtas_error_log *)buf;
-
-		printk(RTAS_DEBUG "event: %d, Type: %s, Severity: %d\n",
-		       error_log_cnt, rtas_event_type(errlog->type),
-		       errlog->severity);
-	}
-}
-
-static int log_rtas_len(char * buf)
-{
-	int len;
-	struct rtas_error_log *err;
-
-	/* rtas fixed header */
-	len = 8;
-	err = (struct rtas_error_log *)buf;
-	if (err->extended_log_length) {
-
-		/* extended header */
-		len += err->extended_log_length;
-	}
-
-	if (rtas_error_log_max == 0)
-		rtas_error_log_max = rtas_get_error_log_max();
-
-	if (len > rtas_error_log_max)
-		len = rtas_error_log_max;
-
-	return len;
-}
-
-/*
- * First write to nvram, if fatal error, that is the only
- * place we log the info.  The error will be picked up
- * on the next reboot by rtasd.  If not fatal, run the
- * method for the type of error.  Currently, only RTAS
- * errors have methods implemented, but in the future
- * there might be a need to store data in nvram before a
- * call to panic().
- *
- * XXX We write to nvram periodically, to indicate error has
- * been written and sync'd, but there is a possibility
- * that if we don't shutdown correctly, a duplicate error
- * record will be created on next reboot.
- */
-void pSeries_log_error(char *buf, unsigned int err_type, int fatal)
-{
-	unsigned long offset;
-	unsigned long s;
-	int len = 0;
-
-	pr_debug("rtasd: logging event\n");
-	if (buf == NULL)
-		return;
-
-	spin_lock_irqsave(&rtasd_log_lock, s);
-
-	/* get length and increase count */
-	switch (err_type & ERR_TYPE_MASK) {
-	case ERR_TYPE_RTAS_LOG:
-		len = log_rtas_len(buf);
-		if (!(err_type & ERR_FLAG_BOOT))
-			error_log_cnt++;
-		break;
-	case ERR_TYPE_KERNEL_PANIC:
-	default:
-		WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
-		spin_unlock_irqrestore(&rtasd_log_lock, s);
-		return;
-	}
-
-	/* Write error to NVRAM */
-	if (logging_enabled && !(err_type & ERR_FLAG_BOOT))
-		nvram_write_error_log(buf, len, err_type, error_log_cnt);
-
-	/*
-	 * rtas errors can occur during boot, and we do want to capture
-	 * those somewhere, even if nvram isn't ready (why not?), and even
-	 * if rtasd isn't ready. Put them into the boot log, at least.
-	 */
-	if ((err_type & ERR_TYPE_MASK) == ERR_TYPE_RTAS_LOG)
-		printk_log_rtas(buf, len);
-
-	/* Check to see if we need to or have stopped logging */
-	if (fatal || !logging_enabled) {
-		logging_enabled = 0;
-		WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
-		spin_unlock_irqrestore(&rtasd_log_lock, s);
-		return;
-	}
-
-	/* call type specific method for error */
-	switch (err_type & ERR_TYPE_MASK) {
-	case ERR_TYPE_RTAS_LOG:
-		offset = rtas_error_log_buffer_max *
-			((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK);
-
-		/* First copy over sequence number */
-		memcpy(&rtas_log_buf[offset], (void *) &error_log_cnt, sizeof(int));
-
-		/* Second copy over error log data */
-		offset += sizeof(int);
-		memcpy(&rtas_log_buf[offset], buf, len);
-
-		if (rtas_log_size < LOG_NUMBER)
-			rtas_log_size += 1;
-		else
-			rtas_log_start += 1;
-
-		WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
-		spin_unlock_irqrestore(&rtasd_log_lock, s);
-		wake_up_interruptible(&rtas_log_wait);
-		break;
-	case ERR_TYPE_KERNEL_PANIC:
-	default:
-		WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */
-		spin_unlock_irqrestore(&rtasd_log_lock, s);
-		return;
-	}
-
-}
-
-
-static int rtas_log_open(struct inode * inode, struct file * file)
-{
-	return 0;
-}
-
-static int rtas_log_release(struct inode * inode, struct file * file)
-{
-	return 0;
-}
-
-/* This will check if all events are logged, if they are then, we
- * know that we can safely clear the events in NVRAM.
- * Next we'll sit and wait for something else to log.
- */
-static ssize_t rtas_log_read(struct file * file, char __user * buf,
-			 size_t count, loff_t *ppos)
-{
-	int error;
-	char *tmp;
-	unsigned long s;
-	unsigned long offset;
-
-	if (!buf || count < rtas_error_log_buffer_max)
-		return -EINVAL;
-
-	count = rtas_error_log_buffer_max;
-
-	if (!access_ok(VERIFY_WRITE, buf, count))
-		return -EFAULT;
-
-	tmp = kmalloc(count, GFP_KERNEL);
-	if (!tmp)
-		return -ENOMEM;
-
-	spin_lock_irqsave(&rtasd_log_lock, s);
-	/* if it's 0, then we know we got the last one (the one in NVRAM) */
-	while (rtas_log_size == 0) {
-		if (file->f_flags & O_NONBLOCK) {
-			spin_unlock_irqrestore(&rtasd_log_lock, s);
-			error = -EAGAIN;
-			goto out;
-		}
-
-		if (!logging_enabled) {
-			spin_unlock_irqrestore(&rtasd_log_lock, s);
-			error = -ENODATA;
-			goto out;
-		}
-		nvram_clear_error_log();
-
-		spin_unlock_irqrestore(&rtasd_log_lock, s);
-		error = wait_event_interruptible(rtas_log_wait, rtas_log_size);
-		if (error)
-			goto out;
-		spin_lock_irqsave(&rtasd_log_lock, s);
-	}
-
-	offset = rtas_error_log_buffer_max * (rtas_log_start & LOG_NUMBER_MASK);
-	memcpy(tmp, &rtas_log_buf[offset], count);
-
-	rtas_log_start += 1;
-	rtas_log_size -= 1;
-	spin_unlock_irqrestore(&rtasd_log_lock, s);
-
-	error = copy_to_user(buf, tmp, count) ? -EFAULT : count;
-out:
-	kfree(tmp);
-	return error;
-}
-
-static unsigned int rtas_log_poll(struct file *file, poll_table * wait)
-{
-	poll_wait(file, &rtas_log_wait, wait);
-	if (rtas_log_size)
-		return POLLIN | POLLRDNORM;
-	return 0;
-}
-
-static const struct file_operations proc_rtas_log_operations = {
-	.read =		rtas_log_read,
-	.poll =		rtas_log_poll,
-	.open =		rtas_log_open,
-	.release =	rtas_log_release,
-};
-
-static int enable_surveillance(int timeout)
-{
-	int error;
-
-	error = rtas_set_indicator(SURVEILLANCE_TOKEN, 0, timeout);
-
-	if (error == 0)
-		return 0;
-
-	if (error == -EINVAL) {
-		printk(KERN_DEBUG "rtasd: surveillance not supported\n");
-		return 0;
-	}
-
-	printk(KERN_ERR "rtasd: could not update surveillance\n");
-	return -1;
-}
-
-static void do_event_scan(void)
-{
-	int error;
-	do {
-		memset(logdata, 0, rtas_error_log_max);
-		error = rtas_call(event_scan, 4, 1, NULL,
-				  RTAS_EVENT_SCAN_ALL_EVENTS, 0,
-				  __pa(logdata), rtas_error_log_max);
-		if (error == -1) {
-			printk(KERN_ERR "event-scan failed\n");
-			break;
-		}
-
-		if (error == 0)
-			pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG, 0);
-
-	} while(error == 0);
-}
-
-static void rtas_event_scan(struct work_struct *w);
-DECLARE_DELAYED_WORK(event_scan_work, rtas_event_scan);
-
-/*
- * Delay should be at least one second since some machines have problems if
- * we call event-scan too quickly.
- */
-static unsigned long event_scan_delay = 1*HZ;
-static int first_pass = 1;
-
-static void rtas_event_scan(struct work_struct *w)
-{
-	unsigned int cpu;
-
-	do_event_scan();
-
-	get_online_cpus();
-
-	cpu = next_cpu(smp_processor_id(), cpu_online_map);
-	if (cpu == NR_CPUS) {
-		cpu = first_cpu(cpu_online_map);
-
-		if (first_pass) {
-			first_pass = 0;
-			event_scan_delay = 30*HZ/rtas_event_scan_rate;
-
-			if (surveillance_timeout != -1) {
-				pr_debug("rtasd: enabling surveillance\n");
-				enable_surveillance(surveillance_timeout);
-				pr_debug("rtasd: surveillance enabled\n");
-			}
-		}
-	}
-
-	schedule_delayed_work_on(cpu, &event_scan_work,
-		__round_jiffies_relative(event_scan_delay, cpu));
-
-	put_online_cpus();
-}
-
-static void start_event_scan(void)
-{
-	unsigned int err_type;
-	int rc;
-
-	printk(KERN_DEBUG "RTAS daemon started\n");
-	pr_debug("rtasd: will sleep for %d milliseconds\n",
-		 (30000 / rtas_event_scan_rate));
-
-	/* See if we have any error stored in NVRAM */
-	memset(logdata, 0, rtas_error_log_max);
-	rc = nvram_read_error_log(logdata, rtas_error_log_max,
-	                          &err_type, &error_log_cnt);
-	/* We can use rtas_log_buf now */
-	logging_enabled = 1;
-
-	if (!rc) {
-		if (err_type != ERR_FLAG_ALREADY_LOGGED) {
-			pSeries_log_error(logdata, err_type | ERR_FLAG_BOOT, 0);
-		}
-	}
-
-	schedule_delayed_work_on(first_cpu(cpu_online_map), &event_scan_work,
-				 event_scan_delay);
-}
-
-static int __init rtas_init(void)
-{
-	struct proc_dir_entry *entry;
-
-	if (!machine_is(pseries))
-		return 0;
-
-	/* No RTAS */
-	event_scan = rtas_token("event-scan");
-	if (event_scan == RTAS_UNKNOWN_SERVICE) {
-		printk(KERN_DEBUG "rtasd: no event-scan on system\n");
-		return -ENODEV;
-	}
-
-	rtas_event_scan_rate = rtas_token("rtas-event-scan-rate");
-	if (rtas_event_scan_rate == RTAS_UNKNOWN_SERVICE) {
-		printk(KERN_ERR "rtasd: no rtas-event-scan-rate on system\n");
-		return -ENODEV;
-	}
-
-	/* Make room for the sequence number */
-	rtas_error_log_max = rtas_get_error_log_max();
-	rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int);
-
-	rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER);
-	if (!rtas_log_buf) {
-		printk(KERN_ERR "rtasd: no memory\n");
-		return -ENOMEM;
-	}
-
-	entry = proc_create("ppc64/rtas/error_log", S_IRUSR, NULL,
-			    &proc_rtas_log_operations);
-	if (!entry)
-		printk(KERN_ERR "Failed to create error_log proc entry\n");
-
-	start_event_scan();
-
-	return 0;
-}
-
-static int __init surveillance_setup(char *str)
-{
-	int i;
-
-	if (get_option(&str,&i)) {
-		if (i >= 0 && i <= 255)
-			surveillance_timeout = i;
-	}
-
-	return 1;
-}
-
-static int __init rtasmsgs_setup(char *str)
-{
-	if (strcmp(str, "on") == 0)
-		full_rtas_msgs = 1;
-	else if (strcmp(str, "off") == 0)
-		full_rtas_msgs = 0;
-
-	return 1;
-}
-__initcall(rtas_init);
-__setup("surveillance=", surveillance_setup);
-__setup("rtasmsgs=", rtasmsgs_setup);
diff --git a/arch/powerpc/platforms/pseries/scanlog.c b/arch/powerpc/platforms/pseries/scanlog.c
index 417eca79df69..1b45c458f952 100644
--- a/arch/powerpc/platforms/pseries/scanlog.c
+++ b/arch/powerpc/platforms/pseries/scanlog.c
@@ -13,7 +13,7 @@
  * of this data using this driver.  A dump exists if the device-tree
  * /chosen/ibm,scan-log-data property exists.
  *
- * This driver exports /proc/ppc64/scan-log-dump which can be read.
+ * This driver exports /proc/powerpc/scan-log-dump which can be read.
  * The driver supports only sequential reads.
  *
  * The driver looks at a write to the driver for the single word "reset".
@@ -186,7 +186,7 @@ static int __init scanlog_init(void)
 	if (!data)
 		goto err;
 
-	ent = proc_create_data("ppc64/rtas/scan-log-dump", S_IRUSR, NULL,
+	ent = proc_create_data("powerpc/rtas/scan-log-dump", S_IRUSR, NULL,
 			       &scanlog_fops, data);
 	if (!ent)
 		goto err;
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 440000cc7130..b4886635972c 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -48,6 +48,7 @@
 #include "plpar_wrappers.h"
 #include "pseries.h"
 #include "xics.h"
+#include "offline_states.h"
 
 
 /*
@@ -84,6 +85,9 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
 	/* Fixup atomic count: it exited inside IRQ handler. */
 	task_thread_info(paca[lcpu].__current)->preempt_count	= 0;
 
+	if (get_cpu_current_state(lcpu) == CPU_STATE_INACTIVE)
+		goto out;
+
 	/* 
 	 * If the RTAS start-cpu token does not exist then presume the
 	 * cpu is already spinning.
@@ -98,6 +102,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
 		return 0;
 	}
 
+out:
 	return 1;
 }
 
@@ -111,12 +116,16 @@ static void __devinit smp_xics_setup_cpu(int cpu)
 		vpa_init(cpu);
 
 	cpu_clear(cpu, of_spin_map);
+	set_cpu_current_state(cpu, CPU_STATE_ONLINE);
+	set_default_offline_state(cpu);
 
 }
 #endif /* CONFIG_XICS */
 
 static void __devinit smp_pSeries_kick_cpu(int nr)
 {
+	long rc;
+	unsigned long hcpuid;
 	BUG_ON(nr < 0 || nr >= NR_CPUS);
 
 	if (!smp_startup_cpu(nr))
@@ -128,6 +137,16 @@ static void __devinit smp_pSeries_kick_cpu(int nr)
 	 * the processor will continue on to secondary_start
 	 */
 	paca[nr].cpu_start = 1;
+
+	set_preferred_offline_state(nr, CPU_STATE_ONLINE);
+
+	if (get_cpu_current_state(nr) == CPU_STATE_INACTIVE) {
+		hcpuid = get_hard_smp_processor_id(nr);
+		rc = plpar_hcall_norets(H_PROD, hcpuid);
+		if (rc != H_SUCCESS)
+			printk(KERN_ERR "Error: Prod to wake up processor %d\
+						Ret= %ld\n", nr, rc);
+	}
 }
 
 static int smp_pSeries_cpu_bootable(unsigned int nr)
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index b9bf0eedccf2..d80f193cd871 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -20,6 +20,7 @@
 #include <linux/cpu.h>
 #include <linux/msi.h>
 #include <linux/of.h>
+#include <linux/percpu.h>
 
 #include <asm/firmware.h>
 #include <asm/io.h>
@@ -46,6 +47,12 @@ static struct irq_host *xics_host;
  */
 #define IPI_PRIORITY		4
 
+/* The least favored priority */
+#define LOWEST_PRIORITY		0xFF
+
+/* The number of priorities defined above */
+#define MAX_NUM_PRIORITIES	3
+
 static unsigned int default_server = 0xFF;
 static unsigned int default_distrib_server = 0;
 static unsigned int interrupt_server_size = 8;
@@ -56,6 +63,12 @@ static int ibm_set_xive;
 static int ibm_int_on;
 static int ibm_int_off;
 
+struct xics_cppr {
+	unsigned char stack[MAX_NUM_PRIORITIES];
+	int index;
+};
+
+static DEFINE_PER_CPU(struct xics_cppr, xics_cppr);
 
 /* Direct hardware low level accessors */
 
@@ -150,14 +163,13 @@ static inline void lpar_qirr_info(int n_cpu , u8 value)
 /* Interface to generic irq subsystem */
 
 #ifdef CONFIG_SMP
-static int get_irq_server(unsigned int virq, unsigned int strict_check)
+static int get_irq_server(unsigned int virq, cpumask_t cpumask,
+			  unsigned int strict_check)
 {
 	int server;
 	/* For the moment only implement delivery to all cpus or one cpu */
-	cpumask_t cpumask;
 	cpumask_t tmp = CPU_MASK_NONE;
 
-	cpumask_copy(&cpumask, irq_desc[virq].affinity);
 	if (!distribute_irqs)
 		return default_server;
 
@@ -179,7 +191,8 @@ static int get_irq_server(unsigned int virq, unsigned int strict_check)
 	return default_server;
 }
 #else
-static int get_irq_server(unsigned int virq, unsigned int strict_check)
+static int get_irq_server(unsigned int virq, cpumask_t cpumask,
+			  unsigned int strict_check)
 {
 	return default_server;
 }
@@ -198,7 +211,7 @@ static void xics_unmask_irq(unsigned int virq)
 	if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
 		return;
 
-	server = get_irq_server(virq, 0);
+	server = get_irq_server(virq, *(irq_to_desc(virq)->affinity), 0);
 
 	call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server,
 				DEFAULT_PRIORITY);
@@ -284,6 +297,19 @@ static inline unsigned int xics_xirr_vector(unsigned int xirr)
 	return xirr & 0x00ffffff;
 }
 
+static void push_cppr(unsigned int vec)
+{
+	struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
+
+	if (WARN_ON(os_cppr->index >= MAX_NUM_PRIORITIES - 1))
+		return;
+
+	if (vec == XICS_IPI)
+		os_cppr->stack[++os_cppr->index] = IPI_PRIORITY;
+	else
+		os_cppr->stack[++os_cppr->index] = DEFAULT_PRIORITY;
+}
+
 static unsigned int xics_get_irq_direct(void)
 {
 	unsigned int xirr = direct_xirr_info_get();
@@ -294,8 +320,10 @@ static unsigned int xics_get_irq_direct(void)
 		return NO_IRQ;
 
 	irq = irq_radix_revmap_lookup(xics_host, vec);
-	if (likely(irq != NO_IRQ))
+	if (likely(irq != NO_IRQ)) {
+		push_cppr(vec);
 		return irq;
+	}
 
 	/* We don't have a linux mapping, so have rtas mask it. */
 	xics_mask_unknown_vec(vec);
@@ -315,8 +343,10 @@ static unsigned int xics_get_irq_lpar(void)
 		return NO_IRQ;
 
 	irq = irq_radix_revmap_lookup(xics_host, vec);
-	if (likely(irq != NO_IRQ))
+	if (likely(irq != NO_IRQ)) {
+		push_cppr(vec);
 		return irq;
+	}
 
 	/* We don't have a linux mapping, so have RTAS mask it. */
 	xics_mask_unknown_vec(vec);
@@ -326,12 +356,22 @@ static unsigned int xics_get_irq_lpar(void)
 	return NO_IRQ;
 }
 
+static unsigned char pop_cppr(void)
+{
+	struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
+
+	if (WARN_ON(os_cppr->index < 1))
+		return LOWEST_PRIORITY;
+
+	return os_cppr->stack[--os_cppr->index];
+}
+
 static void xics_eoi_direct(unsigned int virq)
 {
 	unsigned int irq = (unsigned int)irq_map[virq].hwirq;
 
 	iosync();
-	direct_xirr_info_set((0xff << 24) | irq);
+	direct_xirr_info_set((pop_cppr() << 24) | irq);
 }
 
 static void xics_eoi_lpar(unsigned int virq)
@@ -339,7 +379,7 @@ static void xics_eoi_lpar(unsigned int virq)
 	unsigned int irq = (unsigned int)irq_map[virq].hwirq;
 
 	iosync();
-	lpar_xirr_info_set((0xff << 24) | irq);
+	lpar_xirr_info_set((pop_cppr() << 24) | irq);
 }
 
 static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
@@ -365,7 +405,7 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
 	 * For the moment only implement delivery to all cpus or one cpu.
 	 * Get current irq_server for the given irq
 	 */
-	irq_server = get_irq_server(virq, 1);
+	irq_server = get_irq_server(virq, *cpumask, 1);
 	if (irq_server == -1) {
 		char cpulist[128];
 		cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
@@ -388,7 +428,7 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
 }
 
 static struct irq_chip xics_pic_direct = {
-	.typename = " XICS     ",
+	.name = " XICS     ",
 	.startup = xics_startup,
 	.mask = xics_mask_irq,
 	.unmask = xics_unmask_irq,
@@ -397,7 +437,7 @@ static struct irq_chip xics_pic_direct = {
 };
 
 static struct irq_chip xics_pic_lpar = {
-	.typename = " XICS     ",
+	.name = " XICS     ",
 	.startup = xics_startup,
 	.mask = xics_mask_irq,
 	.unmask = xics_unmask_irq,
@@ -428,13 +468,13 @@ static int xics_host_map(struct irq_host *h, unsigned int virq,
 	/* Insert the interrupt mapping into the radix tree for fast lookup */
 	irq_radix_revmap_insert(xics_host, virq, hw);
 
-	get_irq_desc(virq)->status |= IRQ_LEVEL;
+	irq_to_desc(virq)->status |= IRQ_LEVEL;
 	set_irq_chip_and_handler(virq, xics_irq_chip, handle_fasteoi_irq);
 	return 0;
 }
 
 static int xics_host_xlate(struct irq_host *h, struct device_node *ct,
-			   u32 *intspec, unsigned int intsize,
+			   const u32 *intspec, unsigned int intsize,
 			   irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 
 {
@@ -746,6 +786,12 @@ void __init xics_init_IRQ(void)
 
 static void xics_set_cpu_priority(unsigned char cppr)
 {
+	struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
+
+	BUG_ON(os_cppr->index != 0);
+
+	os_cppr->stack[os_cppr->index] = cppr;
+
 	if (firmware_has_feature(FW_FEATURE_LPAR))
 		lpar_cppr_info(cppr);
 	else
@@ -772,7 +818,7 @@ static void xics_set_cpu_giq(unsigned int gserver, unsigned int join)
 
 void xics_setup_cpu(void)
 {
-	xics_set_cpu_priority(0xff);
+	xics_set_cpu_priority(LOWEST_PRIORITY);
 
 	xics_set_cpu_giq(default_distrib_server, 1);
 }
@@ -852,7 +898,7 @@ void xics_migrate_irqs_away(void)
 		/* We need to get IPIs still. */
 		if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
 			continue;
-		desc = get_irq_desc(virq);
+		desc = irq_to_desc(virq);
 
 		/* We only need to migrate enabled IRQS */
 		if (desc == NULL || desc->chip == NULL
@@ -860,7 +906,7 @@ void xics_migrate_irqs_away(void)
 		    || desc->chip->set_affinity == NULL)
 			continue;
 
-		spin_lock_irqsave(&desc->lock, flags);
+		raw_spin_lock_irqsave(&desc->lock, flags);
 
 		status = rtas_call(ibm_get_xive, 1, 3, xics_status, irq);
 		if (status) {
@@ -881,10 +927,10 @@ void xics_migrate_irqs_away(void)
 		       virq, cpu);
 
 		/* Reset affinity to all cpus */
-		cpumask_setall(irq_desc[virq].affinity);
+		cpumask_setall(irq_to_desc(virq)->affinity);
 		desc->chip->set_affinity(virq, cpu_all_mask);
 unlock:
-		spin_unlock_irqrestore(&desc->lock, flags);
+		raw_spin_unlock_irqrestore(&desc->lock, flags);
 	}
 }
 #endif