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