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-rw-r--r--arch/x86/include/asm/efi.h100
1 files changed, 34 insertions, 66 deletions
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 0869434eaf72..1eb5f6433ad8 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -1,6 +1,7 @@
1#ifndef _ASM_X86_EFI_H 1#ifndef _ASM_X86_EFI_H
2#define _ASM_X86_EFI_H 2#define _ASM_X86_EFI_H
3 3
4#include <asm/i387.h>
4/* 5/*
5 * We map the EFI regions needed for runtime services non-contiguously, 6 * We map the EFI regions needed for runtime services non-contiguously,
6 * with preserved alignment on virtual addresses starting from -4G down 7 * with preserved alignment on virtual addresses starting from -4G down
@@ -27,91 +28,58 @@
27 28
28extern unsigned long asmlinkage efi_call_phys(void *, ...); 29extern unsigned long asmlinkage efi_call_phys(void *, ...);
29 30
30#define efi_call_phys0(f) efi_call_phys(f)
31#define efi_call_phys1(f, a1) efi_call_phys(f, a1)
32#define efi_call_phys2(f, a1, a2) efi_call_phys(f, a1, a2)
33#define efi_call_phys3(f, a1, a2, a3) efi_call_phys(f, a1, a2, a3)
34#define efi_call_phys4(f, a1, a2, a3, a4) \
35 efi_call_phys(f, a1, a2, a3, a4)
36#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
37 efi_call_phys(f, a1, a2, a3, a4, a5)
38#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
39 efi_call_phys(f, a1, a2, a3, a4, a5, a6)
40/* 31/*
41 * Wrap all the virtual calls in a way that forces the parameters on the stack. 32 * Wrap all the virtual calls in a way that forces the parameters on the stack.
42 */ 33 */
43 34
35/* Use this macro if your virtual returns a non-void value */
44#define efi_call_virt(f, args...) \ 36#define efi_call_virt(f, args...) \
45 ((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args) 37({ \
46 38 efi_status_t __s; \
47#define efi_call_virt0(f) efi_call_virt(f) 39 kernel_fpu_begin(); \
48#define efi_call_virt1(f, a1) efi_call_virt(f, a1) 40 __s = ((efi_##f##_t __attribute__((regparm(0)))*) \
49#define efi_call_virt2(f, a1, a2) efi_call_virt(f, a1, a2) 41 efi.systab->runtime->f)(args); \
50#define efi_call_virt3(f, a1, a2, a3) efi_call_virt(f, a1, a2, a3) 42 kernel_fpu_end(); \
51#define efi_call_virt4(f, a1, a2, a3, a4) \ 43 __s; \
52 efi_call_virt(f, a1, a2, a3, a4) 44})
53#define efi_call_virt5(f, a1, a2, a3, a4, a5) \ 45
54 efi_call_virt(f, a1, a2, a3, a4, a5) 46/* Use this macro if your virtual call does not return any value */
55#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \ 47#define __efi_call_virt(f, args...) \
56 efi_call_virt(f, a1, a2, a3, a4, a5, a6) 48({ \
49 kernel_fpu_begin(); \
50 ((efi_##f##_t __attribute__((regparm(0)))*) \
51 efi.systab->runtime->f)(args); \
52 kernel_fpu_end(); \
53})
57 54
58#define efi_ioremap(addr, size, type, attr) ioremap_cache(addr, size) 55#define efi_ioremap(addr, size, type, attr) ioremap_cache(addr, size)
59 56
60#else /* !CONFIG_X86_32 */ 57#else /* !CONFIG_X86_32 */
61 58
62extern u64 efi_call0(void *fp); 59#define EFI_LOADER_SIGNATURE "EL64"
63extern u64 efi_call1(void *fp, u64 arg1); 60
64extern u64 efi_call2(void *fp, u64 arg1, u64 arg2); 61extern u64 asmlinkage efi_call(void *fp, ...);
65extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3); 62
66extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4); 63#define efi_call_phys(f, args...) efi_call((f), args)
67extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3, 64
68 u64 arg4, u64 arg5); 65#define efi_call_virt(f, ...) \
69extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
70 u64 arg4, u64 arg5, u64 arg6);
71
72#define efi_call_phys0(f) \
73 efi_call0((f))
74#define efi_call_phys1(f, a1) \
75 efi_call1((f), (u64)(a1))
76#define efi_call_phys2(f, a1, a2) \
77 efi_call2((f), (u64)(a1), (u64)(a2))
78#define efi_call_phys3(f, a1, a2, a3) \
79 efi_call3((f), (u64)(a1), (u64)(a2), (u64)(a3))
80#define efi_call_phys4(f, a1, a2, a3, a4) \
81 efi_call4((f), (u64)(a1), (u64)(a2), (u64)(a3), \
82 (u64)(a4))
83#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
84 efi_call5((f), (u64)(a1), (u64)(a2), (u64)(a3), \
85 (u64)(a4), (u64)(a5))
86#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
87 efi_call6((f), (u64)(a1), (u64)(a2), (u64)(a3), \
88 (u64)(a4), (u64)(a5), (u64)(a6))
89
90#define _efi_call_virtX(x, f, ...) \
91({ \ 66({ \
92 efi_status_t __s; \ 67 efi_status_t __s; \
93 \ 68 \
94 efi_sync_low_kernel_mappings(); \ 69 efi_sync_low_kernel_mappings(); \
95 preempt_disable(); \ 70 preempt_disable(); \
96 __s = efi_call##x((void *)efi.systab->runtime->f, __VA_ARGS__); \ 71 __kernel_fpu_begin(); \
72 __s = efi_call((void *)efi.systab->runtime->f, __VA_ARGS__); \
73 __kernel_fpu_end(); \
97 preempt_enable(); \ 74 preempt_enable(); \
98 __s; \ 75 __s; \
99}) 76})
100 77
101#define efi_call_virt0(f) \ 78/*
102 _efi_call_virtX(0, f) 79 * All X86_64 virt calls return non-void values. Thus, use non-void call for
103#define efi_call_virt1(f, a1) \ 80 * virt calls that would be void on X86_32.
104 _efi_call_virtX(1, f, (u64)(a1)) 81 */
105#define efi_call_virt2(f, a1, a2) \ 82#define __efi_call_virt(f, args...) efi_call_virt(f, args)
106 _efi_call_virtX(2, f, (u64)(a1), (u64)(a2))
107#define efi_call_virt3(f, a1, a2, a3) \
108 _efi_call_virtX(3, f, (u64)(a1), (u64)(a2), (u64)(a3))
109#define efi_call_virt4(f, a1, a2, a3, a4) \
110 _efi_call_virtX(4, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4))
111#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
112 _efi_call_virtX(5, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4), (u64)(a5))
113#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
114 _efi_call_virtX(6, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
115 83
116extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size, 84extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,
117 u32 type, u64 attribute); 85 u32 type, u64 attribute);
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