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_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_VSMP
  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_reservation_" #name "__:"                \
 124                         " 1:.skip %c0;"                                 \
 125                         " .size __brk_reservation_" #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_reservation_##name##__:                           \
 145 1:      .skip sz;                                       \
 146         .size __brk_reservation_##name##__,.-1b;        \
 147         .popsection
 148 #endif /* __ASSEMBLY__ */
 149 #endif  /*  __KERNEL__  */
 150
 151 #endif /* _ASM_X86_SETUP_H */