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Diffstat (limited to 'arch/powerpc/kernel/setup_32.c')
-rw-r--r--arch/powerpc/kernel/setup_32.c124
1 files changed, 49 insertions, 75 deletions
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 4efebe88e64..ea4fda60e57 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -16,7 +16,7 @@
#include <linux/root_dev.h>
#include <linux/cpu.h>
#include <linux/console.h>
-#include <linux/lmb.h>
+#include <linux/memblock.h>
#include <asm/io.h>
#include <asm/prom.h>
@@ -30,7 +30,6 @@
#include <asm/btext.h>
#include <asm/machdep.h>
#include <asm/uaccess.h>
-#include <asm/system.h>
#include <asm/pmac_feature.h>
#include <asm/sections.h>
#include <asm/nvram.h>
@@ -38,27 +37,22 @@
#include <asm/time.h>
#include <asm/serial.h>
#include <asm/udbg.h>
-
-#include "setup.h"
+#include <asm/mmu_context.h>
+#include <asm/epapr_hcalls.h>
#define DBG(fmt...)
-#if defined CONFIG_KGDB
-#include <asm/kgdb.h>
-#endif
-
extern void bootx_init(unsigned long r4, unsigned long phys);
-int boot_cpuid;
-EXPORT_SYMBOL_GPL(boot_cpuid);
int boot_cpuid_phys;
+EXPORT_SYMBOL_GPL(boot_cpuid_phys);
+
+int smp_hw_index[NR_CPUS];
unsigned long ISA_DMA_THRESHOLD;
unsigned int DMA_MODE_READ;
unsigned int DMA_MODE_WRITE;
-int have_of = 1;
-
#ifdef CONFIG_VGA_CONSOLE
unsigned long vgacon_remap_base;
EXPORT_SYMBOL(vgacon_remap_base);
@@ -101,10 +95,16 @@ notrace unsigned long __init early_init(unsigned long dt_ptr)
PTRRELOC(&__start___ftr_fixup),
PTRRELOC(&__stop___ftr_fixup));
+ do_feature_fixups(spec->mmu_features,
+ PTRRELOC(&__start___mmu_ftr_fixup),
+ PTRRELOC(&__stop___mmu_ftr_fixup));
+
do_lwsync_fixups(spec->cpu_features,
PTRRELOC(&__start___lwsync_fixup),
PTRRELOC(&__stop___lwsync_fixup));
+ do_final_fixups();
+
return KERNELBASE + offset;
}
@@ -115,16 +115,24 @@ notrace unsigned long __init early_init(unsigned long dt_ptr)
* This is called very early on the boot process, after a minimal
* MMU environment has been set up but before MMU_init is called.
*/
-notrace void __init machine_init(unsigned long dt_ptr, unsigned long phys)
+notrace void __init machine_init(u64 dt_ptr)
{
+ lockdep_init();
+
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
/* Do some early initialization based on the flat device tree */
early_init_devtree(__va(dt_ptr));
+ epapr_paravirt_early_init();
+
+ early_init_mmu();
+
probe_machine();
+ setup_kdump_trampoline();
+
#ifdef CONFIG_6xx
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
@@ -140,27 +148,6 @@ notrace void __init machine_init(unsigned long dt_ptr, unsigned long phys)
ppc_md.progress("id mach(): done", 0x200);
}
-#ifdef CONFIG_BOOKE_WDT
-/* Checks wdt=x and wdt_period=xx command-line option */
-notrace int __init early_parse_wdt(char *p)
-{
- if (p && strncmp(p, "0", 1) != 0)
- booke_wdt_enabled = 1;
-
- return 0;
-}
-early_param("wdt", early_parse_wdt);
-
-int __init early_parse_wdt_period (char *p)
-{
- if (p)
- booke_wdt_period = simple_strtoul(p, NULL, 0);
-
- return 0;
-}
-early_param("wdt_period", early_parse_wdt_period);
-#endif /* CONFIG_BOOKE_WDT */
-
/* Checks "l2cr=xxxx" command-line option */
int __init ppc_setup_l2cr(char *str)
{
@@ -204,6 +191,14 @@ void nvram_write_byte(unsigned char val, int addr)
}
EXPORT_SYMBOL(nvram_write_byte);
+ssize_t nvram_get_size(void)
+{
+ if (ppc_md.nvram_size)
+ return ppc_md.nvram_size();
+ return -1;
+}
+EXPORT_SYMBOL(nvram_get_size);
+
void nvram_sync(void)
{
if (ppc_md.nvram_sync)
@@ -213,23 +208,12 @@ EXPORT_SYMBOL(nvram_sync);
#endif /* CONFIG_NVRAM */
-static DEFINE_PER_CPU(struct cpu, cpu_devices);
-
int __init ppc_init(void)
{
- int cpu;
-
/* clear the progress line */
if (ppc_md.progress)
ppc_md.progress(" ", 0xffff);
- /* register CPU devices */
- for_each_possible_cpu(cpu) {
- struct cpu *c = &per_cpu(cpu_devices, cpu);
- c->hotpluggable = 1;
- register_cpu(c, cpu);
- }
-
/* call platform init */
if (ppc_md.init != NULL) {
ppc_md.init();
@@ -239,39 +223,41 @@ int __init ppc_init(void)
arch_initcall(ppc_init);
-#ifdef CONFIG_IRQSTACKS
static void __init irqstack_early_init(void)
{
unsigned int i;
/* interrupt stacks must be in lowmem, we get that for free on ppc32
- * as the lmb is limited to lowmem by LMB_REAL_LIMIT */
+ * as the memblock is limited to lowmem by default */
for_each_possible_cpu(i) {
softirq_ctx[i] = (struct thread_info *)
- __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+ __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
hardirq_ctx[i] = (struct thread_info *)
- __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+ __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
}
}
-#else
-#define irqstack_early_init()
-#endif
#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
static void __init exc_lvl_early_init(void)
{
- unsigned int i;
+ unsigned int i, hw_cpu;
/* interrupt stacks must be in lowmem, we get that for free on ppc32
- * as the lmb is limited to lowmem by LMB_REAL_LIMIT */
+ * as the memblock is limited to lowmem by MEMBLOCK_REAL_LIMIT */
for_each_possible_cpu(i) {
- critirq_ctx[i] = (struct thread_info *)
- __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+#ifdef CONFIG_SMP
+ hw_cpu = get_hard_smp_processor_id(i);
+#else
+ hw_cpu = 0;
+#endif
+
+ critirq_ctx[hw_cpu] = (struct thread_info *)
+ __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
#ifdef CONFIG_BOOKE
- dbgirq_ctx[i] = (struct thread_info *)
- __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
- mcheckirq_ctx[i] = (struct thread_info *)
- __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+ dbgirq_ctx[hw_cpu] = (struct thread_info *)
+ __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
+ mcheckirq_ctx[hw_cpu] = (struct thread_info *)
+ __va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
#endif
}
}
@@ -302,18 +288,6 @@ void __init setup_arch(char **cmdline_p)
xmon_setup();
-#if defined(CONFIG_KGDB)
- if (ppc_md.kgdb_map_scc)
- ppc_md.kgdb_map_scc();
- set_debug_traps();
- if (strstr(cmd_line, "gdb")) {
- if (ppc_md.progress)
- ppc_md.progress("setup_arch: kgdb breakpoint", 0x4000);
- printk("kgdb breakpoint activated\n");
- breakpoint();
- }
-#endif
-
/*
* Set cache line size based on type of cpu as a default.
* Systems with OF can look in the properties on the cpu node(s)
@@ -325,9 +299,6 @@ void __init setup_arch(char **cmdline_p)
if (cpu_has_feature(CPU_FTR_UNIFIED_ID_CACHE))
ucache_bsize = icache_bsize = dcache_bsize;
- /* reboot on panic */
- panic_timeout = 180;
-
if (ppc_md.panic)
setup_panic();
@@ -353,4 +324,7 @@ void __init setup_arch(char **cmdline_p)
if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
paging_init();
+
+ /* Initialize the MMU context management stuff */
+ mmu_context_init();
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 14:07:12 +0000