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Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
-rw-r--r--arch/powerpc/kernel/setup_64.c207
1 files changed, 21 insertions, 186 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index e3fb78397dc6..98e9f0595dd8 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -34,6 +34,7 @@
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <asm/io.h>
+#include <asm/kdump.h>
#include <asm/prom.h>
#include <asm/processor.h>
#include <asm/pgtable.h>
@@ -268,6 +269,10 @@ void __init early_setup(unsigned long dt_ptr)
}
ppc_md = **mach;
+#ifdef CONFIG_CRASH_DUMP
+ kdump_setup();
+#endif
+
DBG("Found, Initializing memory management...\n");
/*
@@ -317,6 +322,7 @@ void early_setup_secondary(void)
void smp_release_cpus(void)
{
extern unsigned long __secondary_hold_spinloop;
+ unsigned long *ptr;
DBG(" -> smp_release_cpus()\n");
@@ -327,7 +333,9 @@ void smp_release_cpus(void)
* This is useless but harmless on iSeries, secondaries are already
* waiting on their paca spinloops. */
- __secondary_hold_spinloop = 1;
+ ptr = (unsigned long *)((unsigned long)&__secondary_hold_spinloop
+ - PHYSICAL_START);
+ *ptr = 1;
mb();
DBG(" <- smp_release_cpus()\n");
@@ -459,16 +467,21 @@ void __init setup_system(void)
*/
ppc_md.init_early();
+ /*
+ * We can discover serial ports now since the above did setup the
+ * hash table management for us, thus ioremap works. We do that early
+ * so that further code can be debugged
+ */
+#ifdef CONFIG_SERIAL_8250
+ find_legacy_serial_ports();
+#endif
+
/*
* "Finish" the device-tree, that is do the actual parsing of
* some of the properties like the interrupt map
*/
finish_device_tree();
-#ifdef CONFIG_BOOTX_TEXT
- init_boot_display();
-#endif
-
/*
* Initialize xmon
*/
@@ -507,6 +520,9 @@ void __init setup_system(void)
ppc64_caches.iline_size);
printk("htab_address = 0x%p\n", htab_address);
printk("htab_hash_mask = 0x%lx\n", htab_hash_mask);
+#if PHYSICAL_START > 0
+ printk("physical_start = 0x%x\n", PHYSICAL_START);
+#endif
printk("-----------------------------------------------------\n");
mm_init_ppc64();
@@ -657,187 +673,6 @@ void ppc64_terminate_msg(unsigned int src, const char *msg)
printk("[terminate]%04x %s\n", src, msg);
}
-#ifndef CONFIG_PPC_ISERIES
-/*
- * This function can be used by platforms to "find" legacy serial ports.
- * It works for "serial" nodes under an "isa" node, and will try to
- * respect the "ibm,aix-loc" property if any. It works with up to 8
- * ports.
- */
-
-#define MAX_LEGACY_SERIAL_PORTS 8
-static struct plat_serial8250_port serial_ports[MAX_LEGACY_SERIAL_PORTS+1];
-static unsigned int old_serial_count;
-
-void __init generic_find_legacy_serial_ports(u64 *physport,
- unsigned int *default_speed)
-{
- struct device_node *np;
- u32 *sizeprop;
-
- struct isa_reg_property {
- u32 space;
- u32 address;
- u32 size;
- };
- struct pci_reg_property {
- struct pci_address addr;
- u32 size_hi;
- u32 size_lo;
- };
-
- DBG(" -> generic_find_legacy_serial_port()\n");
-
- *physport = 0;
- if (default_speed)
- *default_speed = 0;
-
- np = of_find_node_by_path("/");
- if (!np)
- return;
-
- /* First fill our array */
- for (np = NULL; (np = of_find_node_by_type(np, "serial"));) {
- struct device_node *isa, *pci;
- struct isa_reg_property *reg;
- unsigned long phys_size, addr_size, io_base;
- u32 *rangesp;
- u32 *interrupts, *clk, *spd;
- char *typep;
- int index, rlen, rentsize;
-
- /* Ok, first check if it's under an "isa" parent */
- isa = of_get_parent(np);
- if (!isa || strcmp(isa->name, "isa")) {
- DBG("%s: no isa parent found\n", np->full_name);
- continue;
- }
-
- /* Now look for an "ibm,aix-loc" property that gives us ordering
- * if any...
- */
- typep = (char *)get_property(np, "ibm,aix-loc", NULL);
-
- /* Get the ISA port number */
- reg = (struct isa_reg_property *)get_property(np, "reg", NULL);
- if (reg == NULL)
- goto next_port;
- /* We assume the interrupt number isn't translated ... */
- interrupts = (u32 *)get_property(np, "interrupts", NULL);
- /* get clock freq. if present */
- clk = (u32 *)get_property(np, "clock-frequency", NULL);
- /* get default speed if present */
- spd = (u32 *)get_property(np, "current-speed", NULL);
- /* Default to locate at end of array */
- index = old_serial_count; /* end of the array by default */
-
- /* If we have a location index, then use it */
- if (typep && *typep == 'S') {
- index = simple_strtol(typep+1, NULL, 0) - 1;
- /* if index is out of range, use end of array instead */
- if (index >= MAX_LEGACY_SERIAL_PORTS)
- index = old_serial_count;
- /* if our index is still out of range, that mean that
- * array is full, we could scan for a free slot but that
- * make little sense to bother, just skip the port
- */
- if (index >= MAX_LEGACY_SERIAL_PORTS)
- goto next_port;
- if (index >= old_serial_count)
- old_serial_count = index + 1;
- /* Check if there is a port who already claimed our slot */
- if (serial_ports[index].iobase != 0) {
- /* if we still have some room, move it, else override */
- if (old_serial_count < MAX_LEGACY_SERIAL_PORTS) {
- DBG("Moved legacy port %d -> %d\n", index,
- old_serial_count);
- serial_ports[old_serial_count++] =
- serial_ports[index];
- } else {
- DBG("Replacing legacy port %d\n", index);
- }
- }
- }
- if (index >= MAX_LEGACY_SERIAL_PORTS)
- goto next_port;
- if (index >= old_serial_count)
- old_serial_count = index + 1;
-
- /* Now fill the entry */
- memset(&serial_ports[index], 0, sizeof(struct plat_serial8250_port));
- serial_ports[index].uartclk = clk ? *clk : BASE_BAUD * 16;
- serial_ports[index].iobase = reg->address;
- serial_ports[index].irq = interrupts ? interrupts[0] : 0;
- serial_ports[index].flags = ASYNC_BOOT_AUTOCONF;
-
- DBG("Added legacy port, index: %d, port: %x, irq: %d, clk: %d\n",
- index,
- serial_ports[index].iobase,
- serial_ports[index].irq,
- serial_ports[index].uartclk);
-
- /* Get phys address of IO reg for port 1 */
- if (index != 0)
- goto next_port;
-
- pci = of_get_parent(isa);
- if (!pci) {
- DBG("%s: no pci parent found\n", np->full_name);
- goto next_port;
- }
-
- rangesp = (u32 *)get_property(pci, "ranges", &rlen);
- if (rangesp == NULL) {
- of_node_put(pci);
- goto next_port;
- }
- rlen /= 4;
-
- /* we need the #size-cells of the PCI bridge node itself */
- phys_size = 1;
- sizeprop = (u32 *)get_property(pci, "#size-cells", NULL);
- if (sizeprop != NULL)
- phys_size = *sizeprop;
- /* we need the parent #addr-cells */
- addr_size = prom_n_addr_cells(pci);
- rentsize = 3 + addr_size + phys_size;
- io_base = 0;
- for (;rlen >= rentsize; rlen -= rentsize,rangesp += rentsize) {
- if (((rangesp[0] >> 24) & 0x3) != 1)
- continue; /* not IO space */
- io_base = rangesp[3];
- if (addr_size == 2)
- io_base = (io_base << 32) | rangesp[4];
- }
- if (io_base != 0) {
- *physport = io_base + reg->address;
- if (default_speed && spd)
- *default_speed = *spd;
- }
- of_node_put(pci);
- next_port:
- of_node_put(isa);
- }
-
- DBG(" <- generic_find_legacy_serial_port()\n");
-}
-
-static struct platform_device serial_device = {
- .name = "serial8250",
- .id = PLAT8250_DEV_PLATFORM,
- .dev = {
- .platform_data = serial_ports,
- },
-};
-
-static int __init serial_dev_init(void)
-{
- return platform_device_register(&serial_device);
-}
-arch_initcall(serial_dev_init);
-
-#endif /* CONFIG_PPC_ISERIES */
-
int check_legacy_ioport(unsigned long base_port)
{
if (ppc_md.check_legacy_ioport == NULL)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 16:04:40 +0000