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_cpu;
  16 struct mpc_bus;
  17 struct mpc_oemtable;
  18
  19 struct x86_quirks {
  20         int (*arch_pre_time_init)(void);
  21         int (*arch_time_init)(void);
  22         int (*arch_pre_intr_init)(void);
  23         int (*arch_intr_init)(void);
  24         int (*arch_trap_init)(void);
  25         char * (*arch_memory_setup)(void);
  26         int (*mach_get_smp_config)(unsigned int early);
  27         int (*mach_find_smp_config)(unsigned int reserve);
  28
  29         int *mpc_record;
  30         int (*mpc_apic_id)(struct mpc_cpu *m);
  31         void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
  32         void (*mpc_oem_pci_bus)(struct mpc_bus *m);
  33         void (*smp_read_mpc_oem)(struct mpc_oemtable *oemtable,
  34                                 unsigned short oemsize);
  35         int (*setup_ioapic_ids)(void);
  36 };
  37
  38 extern void x86_quirk_intr_init(void);
  39
  40 extern void x86_quirk_trap_init(void);
  41
  42 extern void x86_quirk_pre_time_init(void);
  43 extern void x86_quirk_time_init(void);
  44
  45 #endif /* __ASSEMBLY__ */
  46
  47 #ifdef __i386__
  48
  49 #include <linux/pfn.h>
  50 /*
  51  * Reserved space for vmalloc and iomap - defined in asm/page.h
  52  */
  53 #define MAXMEM_PFN      PFN_DOWN(MAXMEM)
  54 #define MAX_NONPAE_PFN  (1 << 20)
  55
  56 #endif /* __i386__ */
  57
  58 #define PARAM_SIZE 4096         /* sizeof(struct boot_params) */
  59
  60 #define OLD_CL_MAGIC            0xA33F
  61 #define OLD_CL_ADDRESS          0x020   /* Relative to real mode data */
  62 #define NEW_CL_POINTER          0x228   /* Relative to real mode data */
  63
  64 #ifndef __ASSEMBLY__
  65 #include <asm/bootparam.h>
  66
  67 /* Interrupt control for vSMPowered x86_64 systems */
  68 #ifdef CONFIG_X86_64
  69 void vsmp_init(void);
  70 #else
  71 static inline void vsmp_init(void) { }
  72 #endif
  73
  74 void setup_bios_corruption_check(void);
  75
  76 #ifdef CONFIG_X86_VISWS
  77 extern void visws_early_detect(void);
  78 extern int is_visws_box(void);
  79 #else
  80 static inline void visws_early_detect(void) { }
  81 static inline int is_visws_box(void) { return 0; }
  82 #endif
  83
  84 extern struct x86_quirks *x86_quirks;
  85 extern unsigned long saved_video_mode;
  86
  87 #ifndef CONFIG_PARAVIRT
  88 #define paravirt_post_allocator_init()  do {} while (0)
  89 #endif
  90
  91 extern void reserve_standard_io_resources(void);
  92 extern void i386_reserve_resources(void);
  93
  94 #ifndef _SETUP
  95
  96 /*
  97  * This is set up by the setup-routine at boot-time
  98  */
  99 extern struct boot_params boot_params;
 100
 101 /*
 102  * Do NOT EVER look at the BIOS memory size location.
 103  * It does not work on many machines.
 104  */
 105 #define LOWMEMSIZE()    (0x9f000)
 106
 107 /* exceedingly early brk-like allocator */
 108 extern unsigned long _brk_end;
 109 void *extend_brk(size_t size, size_t align);
 110
 111 /*
 112  * Reserve space in the brk section.  The name must be unique within
 113  * the file, and somewhat descriptive.  The size is in bytes.  Must be
 114  * used at file scope.
 115  *
 116  * (This uses a temp function to wrap the asm so we can pass it the
 117  * size parameter; otherwise we wouldn't be able to.  We can't use a
 118  * "section" attribute on a normal variable because it always ends up
 119  * being @progbits, which ends up allocating space in the vmlinux
 120  * executable.)
 121  */
 122 #define RESERVE_BRK(name,sz)                                            \
 123         static void __section(.discard) __used                          \
 124         __brk_reservation_fn_##name##__(void) {                         \
 125                 asm volatile (                                          \
 126                         ".pushsection .brk_reservation,\"aw\",@nobits;" \
 127                         ".brk." #name ":"                               \
 128                         " 1:.skip %c0;"                                 \
 129                         " .size .brk." #name ", . - 1b;"                \
 130                         " .popsection"                                  \
 131                         : : "i" (sz));                                  \
 132         }
 133
 134 #ifdef __i386__
 135
 136 void __init i386_start_kernel(void);
 137 extern void probe_roms(void);
 138
 139 #else
 140 void __init x86_64_start_kernel(char *real_mode);
 141 void __init x86_64_start_reservations(char *real_mode_data);
 142
 143 #endif /* __i386__ */
 144 #endif /* _SETUP */
 145 #else
 146 #define RESERVE_BRK(name,sz)                            \
 147         .pushsection .brk_reservation,"aw",@nobits;     \
 148 .brk.name:                                              \
 149 1:      .skip sz;                                       \
 150         .size .brk.name,.-1b;                           \
 151         .popsection
 152 #endif /* __ASSEMBLY__ */
 153 #endif  /*  __KERNEL__  */
 154
 155 #endif /* _ASM_X86_SETUP_H */