Merge tag 'isci-for-3.5' into misc

[firefly-linux-kernel-4.4.55.git] / arch / x86 / boot / compressed / head_64.S

diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 558d76ce23bcf3518a4c9b32bced0ef717be000e..87e03a13d8e3f5d9eaad2d515679d97887833ea2 100644 (file)
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -200,18 +200,28 @@ ENTRY(startup_64)
         * entire text+data+bss and hopefully all of memory.
         */
 #ifdef CONFIG_EFI_STUB
-       pushq   %rsi
+       /*
+        * The entry point for the PE/COFF executable is 0x210, so only
+        * legacy boot loaders will execute this jmp.
+        */
+       jmp     preferred_addr
+
+       .org 0x210
        mov     %rcx, %rdi
        mov     %rdx, %rsi
        call    efi_main
-       popq    %rsi
-       cmpq    $0,%rax
-       je      preferred_addr
        movq    %rax,%rsi
-       call    1f
+       cmpq    $0,%rax
+       jne     2f
 1:
+       /* EFI init failed, so hang. */
+       hlt
+       jmp     1b
+2:
+       call    3f
+3:
        popq    %rax
-       subq    $1b, %rax
+       subq    $3b, %rax
        subq    BP_pref_address(%rsi), %rax
        add     BP_code32_start(%esi), %eax
        leaq    preferred_addr(%rax), %rax