[U-Boot] disabling mmc in spl when booting using bootrom

[Simon Glass]

Hi Ziyuan,

On 11 August 2016 at 05:35, Ziyuan Xu <xzy.xu at rock-chips.com> wrote:
>
>
> On 2016年08月11日 19:31, Sandy Patterson wrote:
>>
>> Simon,
>>
>> I am trying to format a patch to disable MMC in the SPL if booting main
>> u-boot using BOOTROM, therefore the SPL MMC isn't needed.
>>
>> Is the best solution to wrap every header file (rock2.h firefly-rk3288.h,
>> etc) with ifdefs on the BACK_TO_BROM define? Or would it be better to move
>> the SPL MMC define into rk3288-common.h and just have chromebook_jerry undef
>> it like it does the SPL GPIO code.
>>
>> With that change, enabling BOOT_TO_BROM shrinks the spl from 32K to 23K.
>
> Note that, firefly-rk3288 use OF_PLATDATA, we will use u-boot-spl-no-dtb.bin
> instead of u-boot-spl-dtb.bin, and the size of u-boot-spl-no-dtb.bin is
> almost 23K.
>
> @Simon, I think we will update doc/README.rockchip if you insist on
> OF_PLATDATA for firefly-rk3288. we no longer use u-boot-spl-dtb.bin.:-)

I don't insist :-)

I really don't like OF_PLATDATA. But it cuts the size down a lot
(~6KB) and we are otherwise always running out of space on rk3288.

If there is a better idea, let's have it. Otherwise, yes we can update the docs.

Regards,
Simon