[U-Boot] [PATCH v3 06/28] x86: Support skipping relocation for EFI
Bin Meng
bmeng.cn at gmail.com
Wed Aug 5 09:42:10 CEST 2015
On Wed, Aug 5, 2015 at 2:33 AM, Simon Glass <sjg at chromium.org> wrote:
> When running as an EFI application we must skip relocation. Add support for
> this in the x86 relocation code.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v3: None
> Changes in v2:
> - Return early in copy_uboot_to_ram() and clear_bbs() when relocation disabled
>
> arch/x86/lib/relocate.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/x86/lib/relocate.c b/arch/x86/lib/relocate.c
> index 1a62142..9e748d2 100644
> --- a/arch/x86/lib/relocate.c
> +++ b/arch/x86/lib/relocate.c
> @@ -28,6 +28,8 @@ int copy_uboot_to_ram(void)
> {
> size_t len = (size_t)&__data_end - (size_t)&__text_start;
>
> + if (gd->flags & GD_FLG_SKIP_RELOC)
> + return 0;
> memcpy((void *)gd->relocaddr, (void *)&__text_start, len);
>
> return 0;
> @@ -38,6 +40,8 @@ int clear_bss(void)
> ulong dst_addr = (ulong)&__bss_start + gd->reloc_off;
> size_t len = (size_t)&__bss_end - (size_t)&__bss_start;
>
> + if (gd->flags & GD_FLG_SKIP_RELOC)
> + return 0;
> memset((void *)dst_addr, 0x00, len);
>
> return 0;
> @@ -58,6 +62,8 @@ int do_elf_reloc_fixups(void)
> /* The size of the region of u-boot that runs out of RAM. */
> uintptr_t size = (uintptr_t)&__bss_end - (uintptr_t)&__text_start;
>
> + if (gd->flags & GD_FLG_SKIP_RELOC)
> + return 0;
> if (re_src == re_end)
> panic("No relocation data");
>
> --
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
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