1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 7093e4a6a0bc..844f735fd63a 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -3,6 +3,8 @@
 
 #ifdef CONFIG_X86_32
 
+#define EFI_LOADER_SIGNATURE    "EL32"
+
 extern unsigned long asmlinkage efi_call_phys(void *, ...);
 
 #define efi_call_phys0(f)               efi_call_phys(f)
@@ -37,6 +39,8 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...);
 
 #else /* !CONFIG_X86_32 */
 
+#define EFI_LOADER_SIGNATURE    "EL64"
+
 extern u64 efi_call0(void *fp);
 extern u64 efi_call1(void *fp, u64 arg1);
 extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);