LXR linux/arch/x86/include/asm/efi.h

   1#ifndef _ASM_X86_EFI_H
   2#define _ASM_X86_EFI_H
   3
   4#ifdef CONFIG_X86_32
   5
   6extern unsigned long asmlinkage efi_call_phys(void *, ...);
   7
   8#define efi_call_phys0(f)               efi_call_phys(f)
   9#define efi_call_phys1(f, a1)           efi_call_phys(f, a1)
  10#define efi_call_phys2(f, a1, a2)       efi_call_phys(f, a1, a2)
  11#define efi_call_phys3(f, a1, a2, a3)   efi_call_phys(f, a1, a2, a3)
  12#define efi_call_phys4(f, a1, a2, a3, a4)       \
  13        efi_call_phys(f, a1, a2, a3, a4)
  14#define efi_call_phys5(f, a1, a2, a3, a4, a5)   \
  15        efi_call_phys(f, a1, a2, a3, a4, a5)
  16#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6)       \
  17        efi_call_phys(f, a1, a2, a3, a4, a5, a6)
  18/*
  19 * Wrap all the virtual calls in a way that forces the parameters on the stack.
  20 */
  21
  22#define efi_call_virt(f, args...) \
  23        ((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args)
  24
  25#define efi_call_virt0(f)               efi_call_virt(f)
  26#define efi_call_virt1(f, a1)           efi_call_virt(f, a1)
  27#define efi_call_virt2(f, a1, a2)       efi_call_virt(f, a1, a2)
  28#define efi_call_virt3(f, a1, a2, a3)   efi_call_virt(f, a1, a2, a3)
  29#define efi_call_virt4(f, a1, a2, a3, a4)       \
  30        efi_call_virt(f, a1, a2, a3, a4)
  31#define efi_call_virt5(f, a1, a2, a3, a4, a5)   \
  32        efi_call_virt(f, a1, a2, a3, a4, a5)
  33#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6)       \
  34        efi_call_virt(f, a1, a2, a3, a4, a5, a6)
  35
  36#define efi_ioremap(addr, size)                 ioremap_cache(addr, size)
  37
  38#else /* !CONFIG_X86_32 */
  39
  40#define MAX_EFI_IO_PAGES        100
  41
  42extern u64 efi_call0(void *fp);
  43extern u64 efi_call1(void *fp, u64 arg1);
  44extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
  45extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3);
  46extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4);
  47extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3,
  48                     u64 arg4, u64 arg5);
  49extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
  50                     u64 arg4, u64 arg5, u64 arg6);
  51
  52#define efi_call_phys0(f)                       \
  53        efi_call0((void *)(f))
  54#define efi_call_phys1(f, a1)                   \
  55        efi_call1((void *)(f), (u64)(a1))
  56#define efi_call_phys2(f, a1, a2)                       \
  57        efi_call2((void *)(f), (u64)(a1), (u64)(a2))
  58#define efi_call_phys3(f, a1, a2, a3)                           \
  59        efi_call3((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3))
  60#define efi_call_phys4(f, a1, a2, a3, a4)                               \
  61        efi_call4((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),         \
  62                  (u64)(a4))
  63#define efi_call_phys5(f, a1, a2, a3, a4, a5)                           \
  64        efi_call5((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),         \
  65                  (u64)(a4), (u64)(a5))
  66#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6)                       \
  67        efi_call6((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),         \
  68                  (u64)(a4), (u64)(a5), (u64)(a6))
  69
  70#define efi_call_virt0(f)                               \
  71        efi_call0((void *)(efi.systab->runtime->f))
  72#define efi_call_virt1(f, a1)                                   \
  73        efi_call1((void *)(efi.systab->runtime->f), (u64)(a1))
  74#define efi_call_virt2(f, a1, a2)                                       \
  75        efi_call2((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2))
  76#define efi_call_virt3(f, a1, a2, a3)                                   \
  77        efi_call3((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
  78                  (u64)(a3))
  79#define efi_call_virt4(f, a1, a2, a3, a4)                               \
  80        efi_call4((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
  81                  (u64)(a3), (u64)(a4))
  82#define efi_call_virt5(f, a1, a2, a3, a4, a5)                           \
  83        efi_call5((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
  84                  (u64)(a3), (u64)(a4), (u64)(a5))
  85#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6)                       \
  86        efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
  87                  (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
  88
  89extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size);
  90
  91#endif /* CONFIG_X86_32 */
  92
  93extern void efi_reserve_early(void);
  94extern void efi_call_phys_prelog(void);
  95extern void efi_call_phys_epilog(void);
  96
  97#ifndef CONFIG_EFI
  98/*
  99 * IF EFI is not configured, have the EFI calls return -ENOSYS.
 100 */
 101#define efi_call0(_f)                                   (-ENOSYS)
 102#define efi_call1(_f, _a1)                              (-ENOSYS)
 103#define efi_call2(_f, _a1, _a2)                         (-ENOSYS)
 104#define efi_call3(_f, _a1, _a2, _a3)                    (-ENOSYS)
 105#define efi_call4(_f, _a1, _a2, _a3, _a4)               (-ENOSYS)
 106#define efi_call5(_f, _a1, _a2, _a3, _a4, _a5)          (-ENOSYS)
 107#define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6)     (-ENOSYS)
 108#endif /* CONFIG_EFI */
 109
 110#endif /* _ASM_X86_EFI_H */
 111