[U-Boot] rk3288: 32KB SPL size restriction

[Jagan Teki]

On Mon, Aug 14, 2017 at 10:03 AM, Jagan Teki <jagannadh.teki at gmail.com> wrote:
> Hi Simon,
>
> On Mon, Aug 14, 2017 at 3:06 AM, Simon Glass <sjg at chromium.org> wrote:
>> Hi Jagan,
>>
>> On 10 August 2017 at 03:07, Jagan Teki <jagannadh.teki at gmail.com> wrote:
>>> Hi Simon/Philipp or any,
>>>
>>> I believe rk3288 has 20KB BootRom and 100KB internal SRAM and current
>>> u-boot can archive the maximum size of u-boot-spl-dtb.bin which the
>>> boot ROM will read is 32KB, do we have any possibility to increase the
>>> SPL size here.
>>>
>>> # ./tools/mkimage -n rk3288 -T rksd -d ./spl/u-boot-spl-dtb.bin out.img
>>> Warning: SPL image is too large (size 0x9000) and will not boot
>>> Error: image verification failed
>>>
>>> I tried to increase the spl_size from spl_infos (on tools/rkcommon.c)
>>> but not able to boot.
>>
>> I thought all boards were OK at present. Which board is this? Also
>> which toolchain are you using? There was a bug that bloating the
>> static data a bit.
>
> Board similar to firefly-rk3288 and not using
> ROCKCHIP_SPL_BACK_TO_BROM. Observed this when I try to add falcon mode
> support which eventually increased the SPL size.
>
> toolchain: arm-linux-gnueabi-gcc with version 6.3.1 20170109 (Linaro
> GCC 6.3-2017.02)

And it is increasing further with gcc-4.7

thanks!
-- 
Jagan Teki
Free Software Engineer | www.openedev.com
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.