[U-Boot] [PATCH v4] rockchip: add option to change method of loading u-boot

[Ziyuan Xu <xzy.xu@rock-chips.com>]

hi Andreas,

Thanks for your catch. I will revise the typos.

On 2016?07?12? 12:30, Andreas F?rber wrote:
> Am 12.07.2016 um 05:18 schrieb Ziyuan Xu:
>> From: Xu Ziyuan <xzy.xu@rock-chips.com>
>>
>> If we would like to boot from SD card, we have to implement mmc driver
>> in SPL stage, and get a slightly large SPL binrary. Rockchip SoC's
> "binary"
>
>> bootrom code has the ability to load spl and u-boot, then boot.
>>
>> If CONFIG_ROCKCHIP_SPL_BACK_TO_BROM is enabled, the spl will return to
>> tbootrom in board_init_f(), then bootrom load u-boot binrary.
> "the bootrom", "the bootrom loads", "binary"
>
>> This patch does that.
> Redundant?
>
>> Loading sequence after rework:
>> bootrom ==> spl ==> bootrom ==> u-boot
>>
>> Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
>> Acked-by: Simon Glass <sjg@chromium.org>
> Regards,
> Andreas
>