[U-Boot] [PATCH v3 01/28] Add a way to skip relocation

[Bin Meng]

On Wed, Aug 5, 2015 at 2:33 AM, Simon Glass <sjg at chromium.org> wrote:
> When running U-Boot as an EFI application we cannot relocate since we do not
> have relocation information. U-Boot has already been relocated to a suitable
> address.
>
> Add a global_data flag to control skipping relocation.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v3: None
> Changes in v2: None
>
>  common/board_f.c                  | 7 +++++++
>  include/asm-generic/global_data.h | 1 +
>  2 files changed, 8 insertions(+)
>
> diff --git a/common/board_f.c b/common/board_f.c
> index 6d922b8..c596083 100644
> --- a/common/board_f.c
> +++ b/common/board_f.c
> @@ -664,6 +664,11 @@ static int reloc_fdt(void)
>
>  static int setup_reloc(void)
>  {
> +       if (gd->flags & GD_FLG_SKIP_RELOC) {
> +               debug("Skipping relocation due to flag\n");
> +               return 0;
> +       }
> +
>  #ifdef CONFIG_SYS_TEXT_BASE
>         gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
>  #ifdef CONFIG_M68K
> @@ -689,6 +694,8 @@ static int setup_reloc(void)
>
>  static int jump_to_copy(void)
>  {
> +       if (gd->flags & GD_FLG_SKIP_RELOC)
> +               return 0;
>         /*
>          * x86 is special, but in a nice way. It uses a trampoline which
>          * enables the dcache if possible.
> diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
> index 9f5db0f..2155265 100644
> --- a/include/asm-generic/global_data.h
> +++ b/include/asm-generic/global_data.h
> @@ -117,5 +117,6 @@ typedef struct global_data {
>  #define GD_FLG_SERIAL_READY    0x00100 /* Pre-reloc serial console ready  */
>  #define GD_FLG_FULL_MALLOC_INIT        0x00200 /* Full malloc() is ready          */
>  #define GD_FLG_SPL_INIT                0x00400 /* spl_init() has been called      */
> +#define GD_FLG_SKIP_RELOC      0x00800 /* Don't relocate */
>
>  #endif /* __ASM_GENERIC_GBL_DATA_H */
> --

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>