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)                 ioremap_cache(addr, size)
  37
  38 #else /* !CONFIG_X86_32 */
  39
  40 #define MAX_EFI_IO_PAGES        100
  41
  42 extern u64 efi_call0(void *fp);
  43 extern u64 efi_call1(void *fp, u64 arg1);
  44 extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
  45 extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3);
  46 extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4);
  47 extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3,
  48                      u64 arg4, u64 arg5);
  49 extern 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
  89 extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size);
  90
  91 #endif /* CONFIG_X86_32 */
  92
  93 extern int add_efi_memmap;
  94 extern void efi_reserve_early(void);
  95 extern void efi_call_phys_prelog(void);
  96 extern void efi_call_phys_epilog(void);
  97
  98 #ifndef CONFIG_EFI
  99 /*
 100  * IF EFI is not configured, have the EFI calls return -ENOSYS.
 101  */
 102 #define efi_call0(_f)                                   (-ENOSYS)
 103 #define efi_call1(_f, _a1)                              (-ENOSYS)
 104 #define efi_call2(_f, _a1, _a2)                         (-ENOSYS)
 105 #define efi_call3(_f, _a1, _a2, _a3)                    (-ENOSYS)
 106 #define efi_call4(_f, _a1, _a2, _a3, _a4)               (-ENOSYS)
 107 #define efi_call5(_f, _a1, _a2, _a3, _a4, _a5)          (-ENOSYS)
 108 #define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6)     (-ENOSYS)
 109 #endif /* CONFIG_EFI */
 110
 111 #endif /* _ASM_X86_EFI_H */