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

[Sandy Patterson]

On Thu, Aug 11, 2016 at 7:35 AM, 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.
>

The patch would apply if OF_PLATDATA is used too (Although I haven't tested
it). It would just shrink the SPL more right because you don't need the MMC
driver. I wasn't planning to change any of the defconfigs.


>
> @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.:-)
>
>>
>> Sandy
>>
>
>
>