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 #include <asm/x86_init.h>
  11
  12 /*
  13  * Any setup quirks to be performed?
  14  */
  15 struct mpc_bus;
  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         int (*mach_get_smp_config)(unsigned int early);
  24         int (*mach_find_smp_config)(unsigned int reserve);
  25
  26         void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
  27 };
  28
  29 extern void x86_quirk_intr_init(void);
  30
  31 extern void x86_quirk_trap_init(void);
  32
  33 extern void x86_quirk_pre_time_init(void);
  34 extern void x86_quirk_time_init(void);
  35
  36 #endif /* __ASSEMBLY__ */
  37
  38 #ifdef __i386__
  39
  40 #include <linux/pfn.h>
  41 /*
  42  * Reserved space for vmalloc and iomap - defined in asm/page.h
  43  */
  44 #define MAXMEM_PFN      PFN_DOWN(MAXMEM)
  45 #define MAX_NONPAE_PFN  (1 << 20)
  46
  47 #endif /* __i386__ */
  48
  49 #define PARAM_SIZE 4096         /* sizeof(struct boot_params) */
  50
  51 #define OLD_CL_MAGIC            0xA33F
  52 #define OLD_CL_ADDRESS          0x020   /* Relative to real mode data */
  53 #define NEW_CL_POINTER          0x228   /* Relative to real mode data */
  54
  55 #ifndef __ASSEMBLY__
  56 #include <asm/bootparam.h>
  57
  58 /* Interrupt control for vSMPowered x86_64 systems */
  59 #ifdef CONFIG_X86_64
  60 void vsmp_init(void);
  61 #else
  62 static inline void vsmp_init(void) { }
  63 #endif
  64
  65 void setup_bios_corruption_check(void);
  66
  67 #ifdef CONFIG_X86_VISWS
  68 extern void visws_early_detect(void);
  69 extern int is_visws_box(void);
  70 #else
  71 static inline void visws_early_detect(void) { }
  72 static inline int is_visws_box(void) { return 0; }
  73 #endif
  74
  75 extern struct x86_quirks *x86_quirks;
  76 extern unsigned long saved_video_mode;
  77
  78 #ifndef CONFIG_PARAVIRT
  79 #define paravirt_post_allocator_init()  do {} while (0)
  80 #endif
  81
  82 extern void reserve_standard_io_resources(void);
  83 extern void i386_reserve_resources(void);
  84
  85 #ifndef _SETUP
  86
  87 /*
  88  * This is set up by the setup-routine at boot-time
  89  */
  90 extern struct boot_params boot_params;
  91
  92 /*
  93  * Do NOT EVER look at the BIOS memory size location.
  94  * It does not work on many machines.
  95  */
  96 #define LOWMEMSIZE()    (0x9f000)
  97
  98 /* exceedingly early brk-like allocator */
  99 extern unsigned long _brk_end;
 100 void *extend_brk(size_t size, size_t align);
 101
 102 /*
 103  * Reserve space in the brk section.  The name must be unique within
 104  * the file, and somewhat descriptive.  The size is in bytes.  Must be
 105  * used at file scope.
 106  *
 107  * (This uses a temp function to wrap the asm so we can pass it the
 108  * size parameter; otherwise we wouldn't be able to.  We can't use a
 109  * "section" attribute on a normal variable because it always ends up
 110  * being @progbits, which ends up allocating space in the vmlinux
 111  * executable.)
 112  */
 113 #define RESERVE_BRK(name,sz)                                            \
 114         static void __section(.discard) __used                          \
 115         __brk_reservation_fn_##name##__(void) {                         \
 116                 asm volatile (                                          \
 117                         ".pushsection .brk_reservation,\"aw\",@nobits;" \
 118                         ".brk." #name ":"                               \
 119                         " 1:.skip %c0;"                                 \
 120                         " .size .brk." #name ", . - 1b;"                \
 121                         " .popsection"                                  \
 122                         : : "i" (sz));                                  \
 123         }
 124
 125 #ifdef __i386__
 126
 127 void __init i386_start_kernel(void);
 128 extern void probe_roms(void);
 129
 130 #else
 131 void __init x86_64_start_kernel(char *real_mode);
 132 void __init x86_64_start_reservations(char *real_mode_data);
 133
 134 #endif /* __i386__ */
 135 #endif /* _SETUP */
 136 #else
 137 #define RESERVE_BRK(name,sz)                            \
 138         .pushsection .brk_reservation,"aw",@nobits;     \
 139 .brk.name:                                              \
 140 1:      .skip sz;                                       \
 141         .size .brk.name,.-1b;                           \
 142         .popsection
 143 #endif /* __ASSEMBLY__ */
 144 #endif  /*  __KERNEL__  */
 145
 146 #endif /* _ASM_X86_SETUP_H */