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
   6 extern 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, type)           ioremap_cache(addr, size)
  37
  38 #else /* !CONFIG_X86_32 */
  39
  40 extern u64 efi_call0(void *fp);
  41 extern u64 efi_call1(void *fp, u64 arg1);
  42 extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
  43 extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3);
  44 extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4);
  45 extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3,
  46                      u64 arg4, u64 arg5);
  47 extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
  48                      u64 arg4, u64 arg5, u64 arg6);
  49
  50 #define efi_call_phys0(f)                       \
  51         efi_call0((void *)(f))
  52 #define efi_call_phys1(f, a1)                   \
  53         efi_call1((void *)(f), (u64)(a1))
  54 #define efi_call_phys2(f, a1, a2)                       \
  55         efi_call2((void *)(f), (u64)(a1), (u64)(a2))
  56 #define efi_call_phys3(f, a1, a2, a3)                           \
  57         efi_call3((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3))
  58 #define efi_call_phys4(f, a1, a2, a3, a4)                               \
  59         efi_call4((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),         \
  60                   (u64)(a4))
  61 #define efi_call_phys5(f, a1, a2, a3, a4, a5)                           \
  62         efi_call5((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),         \
  63                   (u64)(a4), (u64)(a5))
  64 #define efi_call_phys6(f, a1, a2, a3, a4, a5, a6)                       \
  65         efi_call6((void *)(f), (u64)(a1), (u64)(a2), (u64)(a3),         \
  66                   (u64)(a4), (u64)(a5), (u64)(a6))
  67
  68 #define efi_call_virt0(f)                               \
  69         efi_call0((void *)(efi.systab->runtime->f))
  70 #define efi_call_virt1(f, a1)                                   \
  71         efi_call1((void *)(efi.systab->runtime->f), (u64)(a1))
  72 #define efi_call_virt2(f, a1, a2)                                       \
  73         efi_call2((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2))
  74 #define efi_call_virt3(f, a1, a2, a3)                                   \
  75         efi_call3((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
  76                   (u64)(a3))
  77 #define efi_call_virt4(f, a1, a2, a3, a4)                               \
  78         efi_call4((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
  79                   (u64)(a3), (u64)(a4))
  80 #define efi_call_virt5(f, a1, a2, a3, a4, a5)                           \
  81         efi_call5((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
  82                   (u64)(a3), (u64)(a4), (u64)(a5))
  83 #define efi_call_virt6(f, a1, a2, a3, a4, a5, a6)                       \
  84         efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
  85                   (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
  86
  87 extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,
  88                                  u32 type);
  89
  90 #endif /* CONFIG_X86_32 */
  91
  92 extern int add_efi_memmap;
  93 extern void efi_reserve_early(void);
  94 extern void efi_call_phys_prelog(void);
  95 extern 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 */