diff options
Diffstat (limited to 'arch/x86/include/asm/setup.h')
| -rw-r--r-- | arch/x86/include/asm/setup.h | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 66801cb72f69..bdc2ada05ae0 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -31,7 +31,6 @@ struct x86_quirks { void (*smp_read_mpc_oem)(struct mpc_oemtable *oemtable, unsigned short oemsize); int (*setup_ioapic_ids)(void); - int (*update_apic)(void); }; extern void x86_quirk_pre_intr_init(void); @@ -65,7 +64,11 @@ extern void x86_quirk_time_init(void); #include <asm/bootparam.h> /* Interrupt control for vSMPowered x86_64 systems */ +#ifdef CONFIG_X86_64 void vsmp_init(void); +#else +static inline void vsmp_init(void) { } +#endif void setup_bios_corruption_check(void); @@ -77,8 +80,6 @@ static inline void visws_early_detect(void) { } static inline int is_visws_box(void) { return 0; } #endif -extern int wakeup_secondary_cpu_via_nmi(int apicid, unsigned long start_eip); -extern int wakeup_secondary_cpu_via_init(int apicid, unsigned long start_eip); extern struct x86_quirks *x86_quirks; extern unsigned long saved_video_mode; @@ -99,20 +100,51 @@ extern struct boot_params boot_params; */ #define LOWMEMSIZE() (0x9f000) +/* exceedingly early brk-like allocator */ +extern unsigned long _brk_end; +void *extend_brk(size_t size, size_t align); + +/* + * Reserve space in the brk section. The name must be unique within + * the file, and somewhat descriptive. The size is in bytes. Must be + * used at file scope. + * + * (This uses a temp function to wrap the asm so we can pass it the + * size parameter; otherwise we wouldn't be able to. We can't use a + * "section" attribute on a normal variable because it always ends up + * being @progbits, which ends up allocating space in the vmlinux + * executable.) + */ +#define RESERVE_BRK(name,sz) \ + static void __section(.discard) __used \ + __brk_reservation_fn_##name##__(void) { \ + asm volatile ( \ + ".pushsection .brk_reservation,\"aw\",@nobits;" \ + ".brk." #name ":" \ + " 1:.skip %c0;" \ + " .size .brk." #name ", . - 1b;" \ + " .popsection" \ + : : "i" (sz)); \ + } + #ifdef __i386__ void __init i386_start_kernel(void); extern void probe_roms(void); -extern unsigned long init_pg_tables_start; -extern unsigned long init_pg_tables_end; - #else void __init x86_64_start_kernel(char *real_mode); void __init x86_64_start_reservations(char *real_mode_data); #endif /* __i386__ */ #endif /* _SETUP */ +#else +#define RESERVE_BRK(name,sz) \ + .pushsection .brk_reservation,"aw",@nobits; \ +.brk.name: \ +1: .skip sz; \ + .size .brk.name,.-1b; \ + .popsection #endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ |