#include <asm/procinfo.h>
#include <asm/sections.h>
#include <asm/setup.h>
+#include <asm/smp_plat.h>
#include <asm/mach-types.h>
#include <asm/cacheflush.h>
#include <asm/cachetype.h>
unsigned int processor_id;
EXPORT_SYMBOL(processor_id);
-unsigned int __machine_arch_type;
+unsigned int __machine_arch_type __read_mostly;
EXPORT_SYMBOL(__machine_arch_type);
-unsigned int cacheid;
+unsigned int cacheid __read_mostly;
EXPORT_SYMBOL(cacheid);
unsigned int __atags_pointer __initdata;
unsigned int system_serial_high;
EXPORT_SYMBOL(system_serial_high);
-unsigned int elf_hwcap;
+unsigned int elf_hwcap __read_mostly;
EXPORT_SYMBOL(elf_hwcap);
#ifdef MULTI_CPU
-struct processor processor;
+struct processor processor __read_mostly;
#endif
#ifdef MULTI_TLB
-struct cpu_tlb_fns cpu_tlb;
+struct cpu_tlb_fns cpu_tlb __read_mostly;
#endif
#ifdef MULTI_USER
-struct cpu_user_fns cpu_user;
+struct cpu_user_fns cpu_user __read_mostly;
#endif
#ifdef MULTI_CACHE
-struct cpu_cache_fns cpu_cache;
+struct cpu_cache_fns cpu_cache __read_mostly;
#endif
#ifdef CONFIG_OUTER_CACHE
-struct outer_cache_fns outer_cache;
+struct outer_cache_fns outer_cache __read_mostly;
EXPORT_SYMBOL(outer_cache);
#endif
static const char *cpu_name;
static const char *machine_name;
static char __initdata cmd_line[COMMAND_LINE_SIZE];
+struct machine_desc *machine_desc __initdata;
static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
return cpu_arch;
}
+static int cpu_has_aliasing_icache(unsigned int arch)
+{
+ int aliasing_icache;
+ unsigned int id_reg, num_sets, line_size;
+
+ /* arch specifies the register format */
+ switch (arch) {
+ case CPU_ARCH_ARMv7:
+ asm("mcr p15, 2, %0, c0, c0, 0 @ set CSSELR"
+ : /* No output operands */
+ : "r" (1));
+ isb();
+ asm("mrc p15, 1, %0, c0, c0, 0 @ read CCSIDR"
+ : "=r" (id_reg));
+ line_size = 4 << ((id_reg & 0x7) + 2);
+ num_sets = ((id_reg >> 13) & 0x7fff) + 1;
+ aliasing_icache = (line_size * num_sets) > PAGE_SIZE;
+ break;
+ case CPU_ARCH_ARMv6:
+ aliasing_icache = read_cpuid_cachetype() & (1 << 11);
+ break;
+ default:
+ /* I-cache aliases will be handled by D-cache aliasing code */
+ aliasing_icache = 0;
+ }
+
+ return aliasing_icache;
+}
+
static void __init cacheid_init(void)
{
unsigned int cachetype = read_cpuid_cachetype();
cacheid = CACHEID_VIPT_NONALIASING;
if ((cachetype & (3 << 14)) == 1 << 14)
cacheid |= CACHEID_ASID_TAGGED;
- } else if (cachetype & (1 << 23))
+ else if (cpu_has_aliasing_icache(CPU_ARCH_ARMv7))
+ cacheid |= CACHEID_VIPT_I_ALIASING;
+ } else if (cachetype & (1 << 23)) {
cacheid = CACHEID_VIPT_ALIASING;
- else
+ } else {
cacheid = CACHEID_VIPT_NONALIASING;
+ if (cpu_has_aliasing_icache(CPU_ARCH_ARMv6))
+ cacheid |= CACHEID_VIPT_I_ALIASING;
+ }
} else {
cacheid = CACHEID_VIVT;
}
cache_is_vipt_nonaliasing() ? "VIPT nonaliasing" : "unknown",
cache_is_vivt() ? "VIVT" :
icache_is_vivt_asid_tagged() ? "VIVT ASID tagged" :
- cache_is_vipt_aliasing() ? "VIPT aliasing" :
+ icache_is_vipt_aliasing() ? "VIPT aliasing" :
cache_is_vipt_nonaliasing() ? "VIPT nonaliasing" : "unknown");
}
kernel_code.start = virt_to_phys(_text);
kernel_code.end = virt_to_phys(_etext - 1);
- kernel_data.start = virt_to_phys(_data);
+ kernel_data.start = virt_to_phys(_sdata);
kernel_data.end = virt_to_phys(_end - 1);
for (i = 0; i < mi->nr_banks; i++) {
{ 0, ATAG_NONE }
};
-static void (*init_machine)(void) __initdata;
-
static int __init customize_machine(void)
{
/* customizes platform devices, or adds new ones */
- if (init_machine)
- init_machine();
+ if (machine_desc->init_machine)
+ machine_desc->init_machine();
return 0;
}
arch_initcall(customize_machine);
setup_processor();
mdesc = setup_machine(machine_arch_type);
+ machine_desc = mdesc;
machine_name = mdesc->name;
if (mdesc->soft_reboot)
request_standard_resources(&meminfo, mdesc);
#ifdef CONFIG_SMP
- smp_init_cpus();
+ if (is_smp())
+ smp_init_cpus();
#endif
reserve_crashkernel();
cpu_init();
tcm_init();
- /*
- * Set up various architecture-specific pointers
- */
- arch_nr_irqs = mdesc->nr_irqs;
- init_arch_irq = mdesc->init_irq;
- system_timer = mdesc->timer;
- init_machine = mdesc->init_machine;
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+ handle_arch_irq = mdesc->handle_irq;
+#endif
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
#endif
#endif
early_trap_init();
+
+ if (mdesc->init_early)
+ mdesc->init_early();
}