arch/x86/include/asm/setup.h

   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 */