[U-Boot] [PATCH 16/22] x86: board_f: Adjust x86 boot order for performance

[Bin Meng]

Hi Simon,

On Sun, Dec 28, 2014 at 10:20 AM, Simon Glass <sjg at chromium.org> wrote:
> For bare platforms we turn off ROM-caching before calling board_init_f_r()
> It is then very slow to copy U-Boot from ROM to RAM. So adjust the order so
> that the copying happens before we turn off ROM-caching.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
>  common/board_f.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/common/board_f.c b/common/board_f.c
> index 98c9c72..1b65575 100644
> --- a/common/board_f.c
> +++ b/common/board_f.c
> @@ -983,6 +983,11 @@ static init_fnc_t init_sequence_f[] = {
>         INIT_FUNC_WATCHDOG_RESET
>         reloc_fdt,
>         setup_reloc,
> +#ifdef CONFIG_X86
> +       copy_uboot_to_ram,
> +       clear_bss,
> +       do_elf_reloc_fixups,
> +#endif
>  #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
>         jump_to_copy,
>  #endif
> @@ -1042,9 +1047,6 @@ void board_init_f(ulong boot_flags)
>   */
>  static init_fnc_t init_sequence_f_r[] = {
>         init_cache_f_r,
> -       copy_uboot_to_ram,
> -       clear_bss,
> -       do_elf_reloc_fixups,
>
>         NULL,
>  };
> --

I don't understand. Isn't the init_cache_f_r() which turns on the cache?

Regards,
Bin