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-rw-r--r--arch/x86/include/asm/efi.h133
1 files changed, 67 insertions, 66 deletions
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 0869434eaf72..044a2fd3c5fe 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -1,6 +1,7 @@
#ifndef _ASM_X86_EFI_H
#define _ASM_X86_EFI_H
+#include <asm/i387.h>
/*
* We map the EFI regions needed for runtime services non-contiguously,
* with preserved alignment on virtual addresses starting from -4G down
@@ -27,91 +28,58 @@
extern unsigned long asmlinkage efi_call_phys(void *, ...);
-#define efi_call_phys0(f) efi_call_phys(f)
-#define efi_call_phys1(f, a1) efi_call_phys(f, a1)
-#define efi_call_phys2(f, a1, a2) efi_call_phys(f, a1, a2)
-#define efi_call_phys3(f, a1, a2, a3) efi_call_phys(f, a1, a2, a3)
-#define efi_call_phys4(f, a1, a2, a3, a4) \
- efi_call_phys(f, a1, a2, a3, a4)
-#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
- efi_call_phys(f, a1, a2, a3, a4, a5)
-#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
- efi_call_phys(f, a1, a2, a3, a4, a5, a6)
/*
* Wrap all the virtual calls in a way that forces the parameters on the stack.
*/
+/* Use this macro if your virtual returns a non-void value */
#define efi_call_virt(f, args...) \
- ((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args)
-
-#define efi_call_virt0(f) efi_call_virt(f)
-#define efi_call_virt1(f, a1) efi_call_virt(f, a1)
-#define efi_call_virt2(f, a1, a2) efi_call_virt(f, a1, a2)
-#define efi_call_virt3(f, a1, a2, a3) efi_call_virt(f, a1, a2, a3)
-#define efi_call_virt4(f, a1, a2, a3, a4) \
- efi_call_virt(f, a1, a2, a3, a4)
-#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
- efi_call_virt(f, a1, a2, a3, a4, a5)
-#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
- efi_call_virt(f, a1, a2, a3, a4, a5, a6)
+({ \
+ efi_status_t __s; \
+ kernel_fpu_begin(); \
+ __s = ((efi_##f##_t __attribute__((regparm(0)))*) \
+ efi.systab->runtime->f)(args); \
+ kernel_fpu_end(); \
+ __s; \
+})
+
+/* Use this macro if your virtual call does not return any value */
+#define __efi_call_virt(f, args...) \
+({ \
+ kernel_fpu_begin(); \
+ ((efi_##f##_t __attribute__((regparm(0)))*) \
+ efi.systab->runtime->f)(args); \
+ kernel_fpu_end(); \
+})
#define efi_ioremap(addr, size, type, attr) ioremap_cache(addr, size)
#else /* !CONFIG_X86_32 */
-extern u64 efi_call0(void *fp);
-extern u64 efi_call1(void *fp, u64 arg1);
-extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
-extern u64 efi_call3(void *fp, u64 arg1, u64 arg2, u64 arg3);
-extern u64 efi_call4(void *fp, u64 arg1, u64 arg2, u64 arg3, u64 arg4);
-extern u64 efi_call5(void *fp, u64 arg1, u64 arg2, u64 arg3,
- u64 arg4, u64 arg5);
-extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
- u64 arg4, u64 arg5, u64 arg6);
-
-#define efi_call_phys0(f) \
- efi_call0((f))
-#define efi_call_phys1(f, a1) \
- efi_call1((f), (u64)(a1))
-#define efi_call_phys2(f, a1, a2) \
- efi_call2((f), (u64)(a1), (u64)(a2))
-#define efi_call_phys3(f, a1, a2, a3) \
- efi_call3((f), (u64)(a1), (u64)(a2), (u64)(a3))
-#define efi_call_phys4(f, a1, a2, a3, a4) \
- efi_call4((f), (u64)(a1), (u64)(a2), (u64)(a3), \
- (u64)(a4))
-#define efi_call_phys5(f, a1, a2, a3, a4, a5) \
- efi_call5((f), (u64)(a1), (u64)(a2), (u64)(a3), \
- (u64)(a4), (u64)(a5))
-#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
- efi_call6((f), (u64)(a1), (u64)(a2), (u64)(a3), \
- (u64)(a4), (u64)(a5), (u64)(a6))
-
-#define _efi_call_virtX(x, f, ...) \
+#define EFI_LOADER_SIGNATURE "EL64"
+
+extern u64 asmlinkage efi_call(void *fp, ...);
+
+#define efi_call_phys(f, args...) efi_call((f), args)
+
+#define efi_call_virt(f, ...) \
({ \
efi_status_t __s; \
\
efi_sync_low_kernel_mappings(); \
preempt_disable(); \
- __s = efi_call##x((void *)efi.systab->runtime->f, __VA_ARGS__); \
+ __kernel_fpu_begin(); \
+ __s = efi_call((void *)efi.systab->runtime->f, __VA_ARGS__); \
+ __kernel_fpu_end(); \
preempt_enable(); \
__s; \
})
-#define efi_call_virt0(f) \
- _efi_call_virtX(0, f)
-#define efi_call_virt1(f, a1) \
- _efi_call_virtX(1, f, (u64)(a1))
-#define efi_call_virt2(f, a1, a2) \
- _efi_call_virtX(2, f, (u64)(a1), (u64)(a2))
-#define efi_call_virt3(f, a1, a2, a3) \
- _efi_call_virtX(3, f, (u64)(a1), (u64)(a2), (u64)(a3))
-#define efi_call_virt4(f, a1, a2, a3, a4) \
- _efi_call_virtX(4, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4))
-#define efi_call_virt5(f, a1, a2, a3, a4, a5) \
- _efi_call_virtX(5, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4), (u64)(a5))
-#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
- _efi_call_virtX(6, f, (u64)(a1), (u64)(a2), (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
+/*
+ * All X86_64 virt calls return non-void values. Thus, use non-void call for
+ * virt calls that would be void on X86_32.
+ */
+#define __efi_call_virt(f, args...) efi_call_virt(f, args)
extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,
u32 type, u64 attribute);
@@ -136,6 +104,8 @@ extern void __init runtime_code_page_mkexec(void);
extern void __init efi_runtime_mkexec(void);
extern void __init efi_dump_pagetable(void);
extern void __init efi_apply_memmap_quirks(void);
+extern int __init efi_reuse_config(u64 tables, int nr_tables);
+extern void efi_delete_dummy_variable(void);
struct efi_setup_data {
u64 fw_vendor;
@@ -188,6 +158,33 @@ static inline efi_status_t efi_thunk_set_virtual_address_map(
return EFI_SUCCESS;
}
#endif /* CONFIG_EFI_MIXED */
+
+
+/* arch specific definitions used by the stub code */
+
+struct efi_config {
+ u64 image_handle;
+ u64 table;
+ u64 allocate_pool;
+ u64 allocate_pages;
+ u64 get_memory_map;
+ u64 free_pool;
+ u64 free_pages;
+ u64 locate_handle;
+ u64 handle_protocol;
+ u64 exit_boot_services;
+ u64 text_output;
+ efi_status_t (*call)(unsigned long, ...);
+ bool is64;
+} __packed;
+
+extern struct efi_config *efi_early;
+
+#define efi_call_early(f, ...) \
+ efi_early->call(efi_early->f, __VA_ARGS__);
+
+extern bool efi_reboot_required(void);
+
#else
/*
* IF EFI is not configured, have the EFI calls return -ENOSYS.
@@ -200,6 +197,10 @@ static inline efi_status_t efi_thunk_set_virtual_address_map(
#define efi_call5(_f, _a1, _a2, _a3, _a4, _a5) (-ENOSYS)
#define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6) (-ENOSYS)
static inline void parse_efi_setup(u64 phys_addr, u32 data_len) {}
+static inline bool efi_reboot_required(void)
+{
+ return false;
+}
#endif /* CONFIG_EFI */
#endif /* _ASM_X86_EFI_H */
generated by cgit v1.2.3 (git 2.0.4) at 2025-12-13 03:13:32 +0000