1 #ifndef _ASM_X86_SETUP_H 2 #define _ASM_X86_SETUP_H 3 4 #ifdef __KERNEL__ 5 6 #define COMMAND_LINE_SIZE 2048 7 8 #ifndef __ASSEMBLY__ 9 10 /* 11 * Any setup quirks to be performed? 12 */ 13 struct mpc_cpu; 14 struct mpc_bus; 15 struct mpc_oemtable; 16 17 struct x86_quirks { 18 int (*arch_pre_time_init)(void); 19 int (*arch_time_init)(void); 20 int (*arch_pre_intr_init)(void); 21 int (*arch_intr_init)(void); 22 int (*arch_trap_init)(void); 23 char * (*arch_memory_setup)(void); 24 int (*mach_get_smp_config)(unsigned int early); 25 int (*mach_find_smp_config)(unsigned int reserve); 26 27 int *mpc_record; 28 int (*mpc_apic_id)(struct mpc_cpu *m); 29 void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name); 30 void (*mpc_oem_pci_bus)(struct mpc_bus *m); 31 void (*smp_read_mpc_oem)(struct mpc_oemtable *oemtable, 32 unsigned short oemsize); 33 int (*setup_ioapic_ids)(void); 34 }; 35 36 extern void x86_quirk_pre_intr_init(void); 37 extern void x86_quirk_intr_init(void); 38 39 extern void x86_quirk_trap_init(void); 40 41 extern void x86_quirk_pre_time_init(void); 42 extern void x86_quirk_time_init(void); 43 44 #endif /* __ASSEMBLY__ */ 45 46 #ifdef __i386__ 47 48 #include <linux/pfn.h> 49 /* 50 * Reserved space for vmalloc and iomap - defined in asm/page.h 51 */ 52 #define MAXMEM_PFN PFN_DOWN(MAXMEM) 53 #define MAX_NONPAE_PFN (1 << 20) 54 55 #endif /* __i386__ */ 56 57 #define PARAM_SIZE 4096 /* sizeof(struct boot_params) */ 58 59 #define OLD_CL_MAGIC 0xA33F 60 #define OLD_CL_ADDRESS 0x020 /* Relative to real mode data */ 61 #define NEW_CL_POINTER 0x228 /* Relative to real mode data */ 62 63 #ifndef __ASSEMBLY__ 64 #include <asm/bootparam.h> 65 66 /* Interrupt control for vSMPowered x86_64 systems */ 67 #ifdef CONFIG_X86_64 68 void vsmp_init(void); 69 #else 70 static inline void vsmp_init(void) { } 71 #endif 72 73 void setup_bios_corruption_check(void); 74 75 #ifdef CONFIG_X86_VISWS 76 extern void visws_early_detect(void); 77 extern int is_visws_box(void); 78 #else 79 static inline void visws_early_detect(void) { } 80 static inline int is_visws_box(void) { return 0; } 81 #endif 82 83 extern struct x86_quirks *x86_quirks; 84 extern unsigned long saved_video_mode; 85 86 #ifndef CONFIG_PARAVIRT 87 #define paravirt_post_allocator_init() do {} while (0) 88 #endif 89 90 #ifndef _SETUP 91 92 /* 93 * This is set up by the setup-routine at boot-time 94 */ 95 extern struct boot_params boot_params; 96 97 /* 98 * Do NOT EVER look at the BIOS memory size location. 99 * It does not work on many machines. 100 */ 101 #define LOWMEMSIZE() (0x9f000) 102 103 /* exceedingly early brk-like allocator */ 104 extern unsigned long _brk_end; 105 void *extend_brk(size_t size, size_t align); 106 107 /* 108 * Reserve space in the brk section. The name must be unique within 109 * the file, and somewhat descriptive. The size is in bytes. Must be 110 * used at file scope. 111 * 112 * (This uses a temp function to wrap the asm so we can pass it the 113 * size parameter; otherwise we wouldn't be able to. We can't use a 114 * "section" attribute on a normal variable because it always ends up 115 * being @progbits, which ends up allocating space in the vmlinux 116 * executable.) 117 */ 118 #define RESERVE_BRK(name,sz) \ 119 static void __section(.discard) __used \ 120 __brk_reservation_fn_##name##__(void) { \ 121 asm volatile ( \ 122 ".pushsection .brk_reservation,\"aw\",@nobits;" \ 123 ".brk." #name ":" \ 124 " 1:.skip %c0;" \ 125 " .size .brk." #name ", . - 1b;" \ 126 " .popsection" \ 127 : : "i" (sz)); \ 128 } 129 130 #ifdef __i386__ 131 132 void __init i386_start_kernel(void); 133 extern void probe_roms(void); 134 135 #else 136 void __init x86_64_start_kernel(char *real_mode); 137 void __init x86_64_start_reservations(char *real_mode_data); 138 139 #endif /* __i386__ */ 140 #endif /* _SETUP */ 141 #else 142 #define RESERVE_BRK(name,sz) \ 143 .pushsection .brk_reservation,"aw",@nobits; \ 144 .brk.name: \ 145 1: .skip sz; \ 146 .size .brk.name,.-1b; \ 147 .popsection 148 #endif /* __ASSEMBLY__ */ 149 #endif /* __KERNEL__ */ 150 151 #endif /* _ASM_X86_SETUP_H */ 152