MIPS: Platform files for XLR/XLS processor support

* include/asm/netlogic added with files common for all Netlogic processors
  (common with XLP which will be added later)
* include/asm/netlogic/xlr for XLR/XLS chip specific files
* netlogic/xlr for XLR/XLS platform files

Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2334/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

7 files changed, 918 insertions, 0 deletions

diff --git a/arch/mips/netlogic/xlr/irq.c b/arch/mips/netlogic/xlr/irq.c
new file mode 100644
index 000000000000..2033f5656f68
--- /dev/null
+++ b/arch/mips/netlogic/xlr/irq.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/mm.h>
+
+#include <asm/mipsregs.h>
+
+#include <asm/netlogic/xlr/iomap.h>
+#include <asm/netlogic/xlr/pic.h>
+#include <asm/netlogic/xlr/xlr.h>
+
+#include <asm/netlogic/interrupt.h>
+#include <asm/netlogic/mips-extns.h>
+
+static u64 nlm_irq_mask;
+static DEFINE_SPINLOCK(nlm_pic_lock);
+
+static void xlr_pic_enable(struct irq_data *d)
+{
+	nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET);
+	unsigned long flags;
+	nlm_reg_t reg;
+	int irq = d->irq;
+
+	WARN(!PIC_IRQ_IS_IRT(irq), "Bad irq %d", irq);
+
+	spin_lock_irqsave(&nlm_pic_lock, flags);
+	reg = netlogic_read_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE);
+	netlogic_write_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE,
+			  reg | (1 << 6) | (1 << 30) | (1 << 31));
+	spin_unlock_irqrestore(&nlm_pic_lock, flags);
+}
+
+static void xlr_pic_mask(struct irq_data *d)
+{
+	nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET);
+	unsigned long flags;
+	nlm_reg_t reg;
+	int irq = d->irq;
+
+	WARN(!PIC_IRQ_IS_IRT(irq), "Bad irq %d", irq);
+
+	spin_lock_irqsave(&nlm_pic_lock, flags);
+	reg = netlogic_read_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE);
+	netlogic_write_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE,
+			  reg | (1 << 6) | (1 << 30) | (0 << 31));
+	spin_unlock_irqrestore(&nlm_pic_lock, flags);
+}
+
+static void xlr_pic_ack(struct irq_data *d)
+{
+	unsigned long flags;
+	nlm_reg_t *mmio;
+	int irq = d->irq;
+
+	WARN(!PIC_IRQ_IS_IRT(irq), "Bad irq %d", irq);
+
+	mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET);
+	spin_lock_irqsave(&nlm_pic_lock, flags);
+	netlogic_write_reg(mmio, PIC_INT_ACK, (1 << (irq - PIC_IRQ_BASE)));
+	spin_unlock_irqrestore(&nlm_pic_lock, flags);
+}
+
+/*
+ * This chip definition handles interrupts routed thru the XLR
+ * hardware PIC, currently IRQs 8-39 are mapped to hardware intr
+ * 0-31 wired the XLR PIC
+ */
+static struct irq_chip xlr_pic = {
+	.name		= "XLR-PIC",
+	.irq_enable	= xlr_pic_enable,
+	.irq_mask	= xlr_pic_mask,
+	.irq_ack	= xlr_pic_ack,
+};
+
+static void rsvd_irq_handler(struct irq_data *d)
+{
+	WARN(d->irq >= PIC_IRQ_BASE, "Bad irq %d", d->irq);
+}
+
+/*
+ * Chip definition for CPU originated interrupts(timer, msg) and
+ * IPIs
+ */
+struct irq_chip nlm_cpu_intr = {
+	.name		= "XLR-CPU-INTR",
+	.irq_enable	= rsvd_irq_handler,
+	.irq_mask	= rsvd_irq_handler,
+	.irq_ack	= rsvd_irq_handler,
+};
+
+void __init init_xlr_irqs(void)
+{
+	nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET);
+	uint32_t thread_mask = 1;
+	int level, i;
+
+	pr_info("Interrupt thread mask [%x]\n", thread_mask);
+	for (i = 0; i < PIC_NUM_IRTS; i++) {
+		level = PIC_IRQ_IS_EDGE_TRIGGERED(i);
+
+		/* Bind all PIC irqs to boot cpu */
+		netlogic_write_reg(mmio, PIC_IRT_0_BASE + i, thread_mask);
+
+		/*
+		 * Use local scheduling and high polarity for all IRTs
+		 * Invalidate all IRTs, by default
+		 */
+		netlogic_write_reg(mmio, PIC_IRT_1_BASE + i,
+				(level << 30) | (1 << 6) | (PIC_IRQ_BASE + i));
+	}
+
+	/* Make all IRQs as level triggered by default */
+	for (i = 0; i < NR_IRQS; i++) {
+		if (PIC_IRQ_IS_IRT(i))
+			irq_set_chip_and_handler(i, &xlr_pic, handle_level_irq);
+		else
+			irq_set_chip_and_handler(i, &nlm_cpu_intr,
+						handle_level_irq);
+	}
+#ifdef CONFIG_SMP
+	irq_set_chip_and_handler(IRQ_IPI_SMP_FUNCTION, &nlm_cpu_intr,
+			 nlm_smp_function_ipi_handler);
+	irq_set_chip_and_handler(IRQ_IPI_SMP_RESCHEDULE, &nlm_cpu_intr,
+			 nlm_smp_resched_ipi_handler);
+	nlm_irq_mask |=
+	    ((1ULL << IRQ_IPI_SMP_FUNCTION) | (1ULL << IRQ_IPI_SMP_RESCHEDULE));
+#endif
+	/* unmask all PIC related interrupts. If no handler is installed by the
+	 * drivers, it'll just ack the interrupt and return
+	 */
+	for (i = PIC_IRT_FIRST_IRQ; i <= PIC_IRT_LAST_IRQ; i++)
+		nlm_irq_mask |= (1ULL << i);
+
+	nlm_irq_mask |= (1ULL << IRQ_TIMER);
+}
+
+void __init arch_init_irq(void)
+{
+	/* Initialize the irq descriptors */
+	init_xlr_irqs();
+	write_c0_eimr(nlm_irq_mask);
+}
+
+void __cpuinit nlm_smp_irq_init(void)
+{
+	/* set interrupt mask for non-zero cpus */
+	write_c0_eimr(nlm_irq_mask);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+	uint64_t eirr;
+	int i;
+
+	eirr = read_c0_eirr() & read_c0_eimr();
+	if (!eirr)
+		return;
+
+	/* no need of EIRR here, writing compare clears interrupt */
+	if (eirr & (1 << IRQ_TIMER)) {
+		do_IRQ(IRQ_TIMER);
+		return;
+	}
+
+	/* TODO use dcltz: optimize below code */
+	for (i = 63; i != -1; i--) {
+		if (eirr & (1ULL << i))
+			break;
+	}
+	if (i == -1) {
+		pr_err("no interrupt !!\n");
+		return;
+	}
+
+	/* Ack eirr */
+	write_c0_eirr(1ULL << i);
+
+	do_IRQ(i);
+}
diff --git a/arch/mips/netlogic/xlr/platform.c b/arch/mips/netlogic/xlr/platform.c
new file mode 100644
index 000000000000..609ec2534642
--- /dev/null
+++ b/arch/mips/netlogic/xlr/platform.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2011, Netlogic Microsystems.
+ * Copyright 2004, Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/resource.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_reg.h>
+
+#include <asm/netlogic/xlr/iomap.h>
+#include <asm/netlogic/xlr/pic.h>
+#include <asm/netlogic/xlr/xlr.h>
+
+unsigned int nlm_xlr_uart_in(struct uart_port *p, int offset)
+{
+	nlm_reg_t *mmio;
+	unsigned int value;
+
+	/* XLR uart does not need any mapping of regs */
+	mmio = (nlm_reg_t *)(p->membase + (offset << p->regshift));
+	value = netlogic_read_reg(mmio, 0);
+
+	/* See XLR/XLS errata */
+	if (offset == UART_MSR)
+		value ^= 0xF0;
+	else if (offset == UART_MCR)
+		value ^= 0x3;
+
+	return value;
+}
+
+void nlm_xlr_uart_out(struct uart_port *p, int offset, int value)
+{
+	nlm_reg_t *mmio;
+
+	/* XLR uart does not need any mapping of regs */
+	mmio = (nlm_reg_t *)(p->membase + (offset << p->regshift));
+
+	/* See XLR/XLS errata */
+	if (offset == UART_MSR)
+		value ^= 0xF0;
+	else if (offset == UART_MCR)
+		value ^= 0x3;
+
+	netlogic_write_reg(mmio, 0, value);
+}
+
+#define PORT(_irq)					\
+	{						\
+		.irq		= _irq,			\
+		.regshift	= 2,			\
+		.iotype		= UPIO_MEM32,		\
+		.flags		= (UPF_SKIP_TEST |	\
+			 UPF_FIXED_TYPE | UPF_BOOT_AUTOCONF),\
+		.uartclk	= PIC_CLKS_PER_SEC,	\
+		.type		= PORT_16550A,		\
+		.serial_in	= nlm_xlr_uart_in,	\
+		.serial_out	= nlm_xlr_uart_out,	\
+	}
+
+static struct plat_serial8250_port xlr_uart_data[] = {
+	PORT(PIC_UART_0_IRQ),
+	PORT(PIC_UART_1_IRQ),
+	{},
+};
+
+static struct platform_device uart_device = {
+	.name		= "serial8250",
+	.id		= PLAT8250_DEV_PLATFORM,
+	.dev = {
+		.platform_data = xlr_uart_data,
+	},
+};
+
+static int __init nlm_uart_init(void)
+{
+	nlm_reg_t *mmio;
+
+	mmio = netlogic_io_mmio(NETLOGIC_IO_UART_0_OFFSET);
+	xlr_uart_data[0].membase = (void __iomem *)mmio;
+	xlr_uart_data[0].mapbase = CPHYSADDR((unsigned long)mmio);
+
+	mmio = netlogic_io_mmio(NETLOGIC_IO_UART_1_OFFSET);
+	xlr_uart_data[1].membase = (void __iomem *)mmio;
+	xlr_uart_data[1].mapbase = CPHYSADDR((unsigned long)mmio);
+
+	return platform_device_register(&uart_device);
+}
+
+arch_initcall(nlm_uart_init);
diff --git a/arch/mips/netlogic/xlr/setup.c b/arch/mips/netlogic/xlr/setup.c
new file mode 100644
index 000000000000..482802569e74
--- /dev/null
+++ b/arch/mips/netlogic/xlr/setup.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/serial_8250.h>
+#include <linux/pm.h>
+
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/bootinfo.h>
+#include <asm/smp-ops.h>
+
+#include <asm/netlogic/interrupt.h>
+#include <asm/netlogic/psb-bootinfo.h>
+
+#include <asm/netlogic/xlr/xlr.h>
+#include <asm/netlogic/xlr/iomap.h>
+#include <asm/netlogic/xlr/pic.h>
+#include <asm/netlogic/xlr/gpio.h>
+
+unsigned long netlogic_io_base = (unsigned long)(DEFAULT_NETLOGIC_IO_BASE);
+unsigned long nlm_common_ebase = 0x0;
+struct psb_info nlm_prom_info;
+
+static void nlm_early_serial_setup(void)
+{
+	struct uart_port s;
+	nlm_reg_t *uart_base;
+
+	uart_base = netlogic_io_mmio(NETLOGIC_IO_UART_0_OFFSET);
+	memset(&s, 0, sizeof(s));
+	s.flags		= ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+	s.iotype	= UPIO_MEM32;
+	s.regshift	= 2;
+	s.irq		= PIC_UART_0_IRQ;
+	s.uartclk	= PIC_CLKS_PER_SEC;
+	s.serial_in	= nlm_xlr_uart_in;
+	s.serial_out	= nlm_xlr_uart_out;
+	s.mapbase	= (unsigned long)uart_base;
+	s.membase	= (unsigned char __iomem *)uart_base;
+	early_serial_setup(&s);
+}
+
+static void nlm_linux_exit(void)
+{
+	nlm_reg_t *mmio;
+
+	mmio = netlogic_io_mmio(NETLOGIC_IO_GPIO_OFFSET);
+	/* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */
+	netlogic_write_reg(mmio, NETLOGIC_GPIO_SWRESET_REG, 1);
+	for ( ; ; )
+		cpu_wait();
+}
+
+void __init plat_mem_setup(void)
+{
+	panic_timeout	= 5;
+	_machine_restart = (void (*)(char *))nlm_linux_exit;
+	_machine_halt	= nlm_linux_exit;
+	pm_power_off	= nlm_linux_exit;
+}
+
+const char *get_system_type(void)
+{
+	return "Netlogic XLR/XLS Series";
+}
+
+void __init prom_free_prom_memory(void)
+{
+	/* Nothing yet */
+}
+
+static void build_arcs_cmdline(int *argv)
+{
+	int i, remain, len;
+	char *arg;
+
+	remain = sizeof(arcs_cmdline) - 1;
+	arcs_cmdline[0] = '\0';
+	for (i = 0; argv[i] != 0; i++) {
+		arg = (char *)(long)argv[i];
+		len = strlen(arg);
+		if (len + 1 > remain)
+			break;
+		strcat(arcs_cmdline, arg);
+		strcat(arcs_cmdline, " ");
+		remain -=  len + 1;
+	}
+
+	/* Add the default options here */
+	if ((strstr(arcs_cmdline, "console=")) == NULL) {
+		arg = "console=ttyS0,38400 ";
+		len = strlen(arg);
+		if (len > remain)
+			goto fail;
+		strcat(arcs_cmdline, arg);
+		remain -= len;
+	}
+#ifdef CONFIG_BLK_DEV_INITRD
+	if ((strstr(arcs_cmdline, "rdinit=")) == NULL) {
+		arg = "rdinit=/sbin/init ";
+		len = strlen(arg);
+		if (len > remain)
+			goto fail;
+		strcat(arcs_cmdline, arg);
+		remain -= len;
+	}
+#endif
+	return;
+fail:
+	panic("Cannot add %s, command line too big!", arg);
+}
+
+static void prom_add_memory(void)
+{
+	struct nlm_boot_mem_map *bootm;
+	u64 start, size;
+	u64 pref_backup = 512;  /* avoid pref walking beyond end */
+	int i;
+
+	bootm = (void *)(long)nlm_prom_info.psb_mem_map;
+	for (i = 0; i < bootm->nr_map; i++) {
+		if (bootm->map[i].type != BOOT_MEM_RAM)
+			continue;
+		start = bootm->map[i].addr;
+		size   = bootm->map[i].size;
+
+		/* Work around for using bootloader mem */
+		if (i == 0 && start == 0 && size == 0x0c000000)
+			size = 0x0ff00000;
+
+		add_memory_region(start, size - pref_backup, BOOT_MEM_RAM);
+	}
+}
+
+void __init prom_init(void)
+{
+	int *argv, *envp;		/* passed as 32 bit ptrs */
+	struct psb_info *prom_infop;
+
+	/* truncate to 32 bit and sign extend all args */
+	argv = (int *)(long)(int)fw_arg1;
+	envp = (int *)(long)(int)fw_arg2;
+	prom_infop = (struct psb_info *)(long)(int)fw_arg3;
+
+	nlm_prom_info = *prom_infop;
+
+	nlm_early_serial_setup();
+	build_arcs_cmdline(argv);
+	nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1));
+	prom_add_memory();
+
+#ifdef CONFIG_SMP
+	nlm_wakeup_secondary_cpus(nlm_prom_info.online_cpu_map);
+	register_smp_ops(&nlm_smp_ops);
+#endif
+}
diff --git a/arch/mips/netlogic/xlr/smp.c b/arch/mips/netlogic/xlr/smp.c
new file mode 100644
index 000000000000..b495a7f1433b
--- /dev/null
+++ b/arch/mips/netlogic/xlr/smp.c
@@ -0,0 +1,225 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/irq.h>
+
+#include <asm/mmu_context.h>
+
+#include <asm/netlogic/interrupt.h>
+#include <asm/netlogic/mips-extns.h>
+
+#include <asm/netlogic/xlr/iomap.h>
+#include <asm/netlogic/xlr/pic.h>
+#include <asm/netlogic/xlr/xlr.h>
+
+void core_send_ipi(int logical_cpu, unsigned int action)
+{
+	int cpu = cpu_logical_map(logical_cpu);
+	u32 tid = cpu & 0x3;
+	u32 pid = (cpu >> 2) & 0x07;
+	u32 ipi = (tid << 16) | (pid << 20);
+
+	if (action & SMP_CALL_FUNCTION)
+		ipi |= IRQ_IPI_SMP_FUNCTION;
+	else if (action & SMP_RESCHEDULE_YOURSELF)
+		ipi |= IRQ_IPI_SMP_RESCHEDULE;
+	else
+		return;
+
+	pic_send_ipi(ipi);
+}
+
+void nlm_send_ipi_single(int cpu, unsigned int action)
+{
+	core_send_ipi(cpu, action);
+}
+
+void nlm_send_ipi_mask(const struct cpumask *mask, unsigned int action)
+{
+	int cpu;
+
+	for_each_cpu(cpu, mask) {
+		core_send_ipi(cpu, action);
+	}
+}
+
+/* IRQ_IPI_SMP_FUNCTION Handler */
+void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc)
+{
+	smp_call_function_interrupt();
+}
+
+/* IRQ_IPI_SMP_RESCHEDULE  handler */
+void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc)
+{
+	set_need_resched();
+}
+
+void nlm_common_ipi_handler(int irq, struct pt_regs *regs)
+{
+	if (irq == IRQ_IPI_SMP_FUNCTION) {
+		smp_call_function_interrupt();
+	} else {
+		/* Announce that we are for reschduling */
+		set_need_resched();
+	}
+}
+
+/*
+ * Called before going into mips code, early cpu init
+ */
+void nlm_early_init_secondary(void)
+{
+	write_c0_ebase((uint32_t)nlm_common_ebase);
+	/* TLB partition here later */
+}
+
+/*
+ * Code to run on secondary just after probing the CPU
+ */
+static void __cpuinit nlm_init_secondary(void)
+{
+	nlm_smp_irq_init();
+}
+
+void nlm_smp_finish(void)
+{
+#ifdef notyet
+	nlm_common_msgring_cpu_init();
+#endif
+}
+
+void nlm_cpus_done(void)
+{
+}
+
+/*
+ * Boot all other cpus in the system, initialize them, and bring them into
+ * the boot function
+ */
+int nlm_cpu_unblock[NR_CPUS];
+int nlm_cpu_ready[NR_CPUS];
+unsigned long nlm_next_gp;
+unsigned long nlm_next_sp;
+cpumask_t phys_cpu_present_map;
+
+void nlm_boot_secondary(int logical_cpu, struct task_struct *idle)
+{
+	unsigned long gp = (unsigned long)task_thread_info(idle);
+	unsigned long sp = (unsigned long)__KSTK_TOS(idle);
+	int cpu = cpu_logical_map(logical_cpu);
+
+	nlm_next_sp = sp;
+	nlm_next_gp = gp;
+
+	/* barrier */
+	__sync();
+	nlm_cpu_unblock[cpu] = 1;
+}
+
+void __init nlm_smp_setup(void)
+{
+	unsigned int boot_cpu;
+	int num_cpus, i;
+
+	boot_cpu = hard_smp_processor_id();
+	cpus_clear(phys_cpu_present_map);
+
+	cpu_set(boot_cpu, phys_cpu_present_map);
+	__cpu_number_map[boot_cpu] = 0;
+	__cpu_logical_map[0] = boot_cpu;
+	cpu_set(0, cpu_possible_map);
+
+	num_cpus = 1;
+	for (i = 0; i < NR_CPUS; i++) {
+		if (nlm_cpu_ready[i]) {
+			cpu_set(i, phys_cpu_present_map);
+			__cpu_number_map[i] = num_cpus;
+			__cpu_logical_map[num_cpus] = i;
+			cpu_set(num_cpus, cpu_possible_map);
+			++num_cpus;
+		}
+	}
+
+	pr_info("Phys CPU present map: %lx, possible map %lx\n",
+		(unsigned long)phys_cpu_present_map.bits[0],
+		(unsigned long)cpu_possible_map.bits[0]);
+
+	pr_info("Detected %i Slave CPU(s)\n", num_cpus);
+}
+
+void nlm_prepare_cpus(unsigned int max_cpus)
+{
+}
+
+struct plat_smp_ops nlm_smp_ops = {
+	.send_ipi_single	= nlm_send_ipi_single,
+	.send_ipi_mask		= nlm_send_ipi_mask,
+	.init_secondary		= nlm_init_secondary,
+	.smp_finish		= nlm_smp_finish,
+	.cpus_done		= nlm_cpus_done,
+	.boot_secondary		= nlm_boot_secondary,
+	.smp_setup		= nlm_smp_setup,
+	.prepare_cpus		= nlm_prepare_cpus,
+};
+
+unsigned long secondary_entry_point;
+
+int nlm_wakeup_secondary_cpus(u32 wakeup_mask)
+{
+	unsigned int tid, pid, ipi, i, boot_cpu;
+	void *reset_vec;
+
+	secondary_entry_point = (unsigned long)prom_pre_boot_secondary_cpus;
+	reset_vec = (void *)CKSEG1ADDR(0x1fc00000);
+	memcpy(reset_vec, nlm_boot_smp_nmi, 0x80);
+	boot_cpu = hard_smp_processor_id();
+
+	for (i = 0; i < NR_CPUS; i++) {
+		if (i == boot_cpu)
+			continue;
+		if (wakeup_mask & (1u << i)) {
+			tid = i & 0x3;
+			pid = (i >> 2) & 0x7;
+			ipi = (tid << 16) | (pid << 20) | (1 << 8);
+			pic_send_ipi(ipi);
+		}
+	}
+
+	return 0;
+}
diff --git a/arch/mips/netlogic/xlr/smpboot.S b/arch/mips/netlogic/xlr/smpboot.S
new file mode 100644
index 000000000000..b8e074402c99
--- /dev/null
+++ b/arch/mips/netlogic/xlr/smpboot.S
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/asm.h>
+#include <asm/asm-offsets.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+
+
+/* Don't jump to linux function from Bootloader stack. Change it
+ * here. Kernel might allocate bootloader memory before all the CPUs are
+ * brought up (eg: Inode cache region) and we better don't overwrite this
+ * memory
+ */
+NESTED(prom_pre_boot_secondary_cpus, 16, sp)
+	.set	mips64
+	mfc0	t0, $15, 1	# read ebase
+	andi	t0, 0x1f	# t0 has the processor_id()
+	sll	t0, 2		# offset in cpu array
+
+	PTR_LA	t1, nlm_cpu_ready # mark CPU ready
+	PTR_ADDU t1, t0
+	li	t2, 1
+	sw	t2, 0(t1)
+
+	PTR_LA	t1, nlm_cpu_unblock
+	PTR_ADDU t1, t0
+1:	lw	t2, 0(t1)	# wait till unblocked
+	beqz	t2, 1b
+	nop
+
+	PTR_LA	t1, nlm_next_sp
+	PTR_L	sp, 0(t1)
+	PTR_LA	t1, nlm_next_gp
+	PTR_L	gp, 0(t1)
+
+	PTR_LA	t0, nlm_early_init_secondary
+	jalr	t0
+	nop
+
+	PTR_LA	t0, smp_bootstrap
+	jr	t0
+	nop
+END(prom_pre_boot_secondary_cpus)
+
+NESTED(nlm_boot_smp_nmi, 0, sp)
+	.set push
+	.set noat
+	.set mips64
+	.set noreorder
+
+	/* Clear the  NMI and BEV bits */
+	MFC0	k0, CP0_STATUS
+	li 	k1, 0xffb7ffff
+	and	k0, k0, k1
+	MTC0	k0, CP0_STATUS
+
+	PTR_LA  k1, secondary_entry_point
+	PTR_L	k0, 0(k1)
+	jr	k0
+	nop
+	.set pop
+END(nlm_boot_smp_nmi)
diff --git a/arch/mips/netlogic/xlr/time.c b/arch/mips/netlogic/xlr/time.c
new file mode 100644
index 000000000000..0d81b262593c
--- /dev/null
+++ b/arch/mips/netlogic/xlr/time.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/init.h>
+
+#include <asm/time.h>
+#include <asm/netlogic/interrupt.h>
+#include <asm/netlogic/psb-bootinfo.h>
+
+unsigned int __cpuinit get_c0_compare_int(void)
+{
+	return IRQ_TIMER;
+}
+
+void __init plat_time_init(void)
+{
+	mips_hpt_frequency = nlm_prom_info.cpu_frequency;
+	pr_info("MIPS counter frequency [%ld]\n",
+		(unsigned long)mips_hpt_frequency);
+}
diff --git a/arch/mips/netlogic/xlr/xlr_console.c b/arch/mips/netlogic/xlr/xlr_console.c
new file mode 100644
index 000000000000..759df0692201
--- /dev/null
+++ b/arch/mips/netlogic/xlr/xlr_console.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/types.h>
+#include <asm/netlogic/xlr/iomap.h>
+
+void prom_putchar(char c)
+{
+	nlm_reg_t *mmio;
+
+	mmio = netlogic_io_mmio(NETLOGIC_IO_UART_0_OFFSET);
+	while (netlogic_read_reg(mmio, 0x5) == 0)
+		;
+	netlogic_write_reg(mmio, 0x0, c);
+}