diff options
Diffstat (limited to 'arch/i386/mach-default/setup.c')
| -rw-r--r-- | arch/i386/mach-default/setup.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/arch/i386/mach-default/setup.c b/arch/i386/mach-default/setup.c index b4a7455c699..c511705c386 100644 --- a/arch/i386/mach-default/setup.c +++ b/arch/i386/mach-default/setup.c @@ -2,12 +2,13 @@ * Machine specific setup for generic */ -#include <linux/config.h> #include <linux/smp.h> #include <linux/init.h> #include <linux/interrupt.h> #include <asm/acpi.h> #include <asm/arch_hooks.h> +#include <asm/e820.h> +#include <asm/setup.h> #ifdef CONFIG_HOTPLUG_CPU #define DEFAULT_SEND_IPI (1) @@ -78,7 +79,7 @@ void __init trap_init_hook(void) { } -static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL}; +static struct irqaction irq0 = { timer_interrupt, IRQF_DISABLED, CPU_MASK_NONE, "timer", NULL, NULL}; /** * time_init_hook - do any specific initialisations for the system timer. @@ -130,3 +131,44 @@ static int __init print_ipi_mode(void) } late_initcall(print_ipi_mode); + +/** + * machine_specific_memory_setup - Hook for machine specific memory setup. + * + * Description: + * This is included late in kernel/setup.c so that it can make + * use of all of the static functions. + **/ + +char * __init machine_specific_memory_setup(void) +{ + char *who; + + + who = "BIOS-e820"; + + /* + * Try to copy the BIOS-supplied E820-map. + * + * Otherwise fake a memory map; one section from 0k->640k, + * the next section from 1mb->appropriate_mem_k + */ + sanitize_e820_map(E820_MAP, &E820_MAP_NR); + if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0) { + unsigned long mem_size; + + /* compare results from other methods and take the greater */ + if (ALT_MEM_K < EXT_MEM_K) { + mem_size = EXT_MEM_K; + who = "BIOS-88"; + } else { + mem_size = ALT_MEM_K; + who = "BIOS-e801"; + } + + e820.nr_map = 0; + add_memory_region(0, LOWMEMSIZE(), E820_RAM); + add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM); + } + return who; +} |