diff options
Diffstat (limited to 'arch/x86/boot/compressed/head_64.S')
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 35af09d13dc..558d76ce23b 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -199,6 +199,26 @@ ENTRY(startup_64) * an identity mapped page table being provied that maps our * entire text+data+bss and hopefully all of memory. */ +#ifdef CONFIG_EFI_STUB + pushq %rsi + mov %rcx, %rdi + mov %rdx, %rsi + call efi_main + popq %rsi + cmpq $0,%rax + je preferred_addr + movq %rax,%rsi + call 1f +1: + popq %rax + subq $1b, %rax + subq BP_pref_address(%rsi), %rax + add BP_code32_start(%esi), %eax + leaq preferred_addr(%rax), %rax + jmp *%rax + +preferred_addr: +#endif /* Setup data segments. */ xorl %eax, %eax |