x86/boot: Fix non-EFI build

The kbuild test robot reported the following errors, introduced with
commit 54b52d872680 ("x86/efi: Build our own EFI services pointer
table"),

 arch/x86/boot/compressed/head_32.o: In function `efi32_config':
>> (.data+0x58): undefined reference to `efi_call_phys'

 arch/x86/boot/compressed/head_64.o: In function `efi64_config':
>> (.data+0x90): undefined reference to `efi_call6'

Wrap the efi*_config structures in #ifdef CONFIG_EFI_STUB so that we
don't make references to EFI functions if they're not compiled in.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index cccc05f0681c..de9d4200d305 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -229,12 +229,14 @@ relocated:
         xorl    %ebx, %ebx
         jmp     *%eax
 
+#ifdef CONFIG_EFI_STUB
         .data
 efi32_config:
         .fill 11,8,0
         .long efi_call_phys
         .long 0
         .byte 0
+#endif
 
 /*
  * Stack and heap for uncompression
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 4f40cddd025d..57e58a5fa210 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -440,6 +440,7 @@ gdt:
         .quad   0x0000000000000000      /* TS continued */
 gdt_end:
 
+#ifdef CONFIG_EFI_STUB
 efi_config:
         .quad   0
 
@@ -456,6 +457,8 @@ efi64_config:
         .fill   11,8,0
         .quad   efi_call6
         .byte   1
+#endif /* CONFIG_EFI_STUB */
+
 /*
  * Stack and heap for uncompression
  */