diff options
Diffstat (limited to 'roms/u-boot/arch/x86/cpu/start64.S')
| -rw-r--r-- | roms/u-boot/arch/x86/cpu/start64.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/roms/u-boot/arch/x86/cpu/start64.S b/roms/u-boot/arch/x86/cpu/start64.S new file mode 100644 index 000000000..7be834788 --- /dev/null +++ b/roms/u-boot/arch/x86/cpu/start64.S @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * 64-bit x86 Startup Code + * + * Copyright 2019 Google, Inc + * Written by Simon Glass <sjg@chromium.org> + */ + +#include <config.h> + +.section .text.start +.code64 +.globl _start +.type _start, @function +_start: + /* Set up memory using the existing stack */ + mov %rsp, %rdi + call board_init_f_alloc_reserve + mov %rax, %rsp + + call board_init_f_init_reserve + + xor %rdi, %rdi + call board_init_f + call board_init_f_r + + /* Should not return here */ + jmp . |