[U-Boot] SPL load ARM Trusted Firmware BL31?

[Michal Simek]

On 12.10.2016 13:18, Mike Looijmans wrote:
> On 11-10-16 13:00, Dan Handley wrote:
>>>
> 
> Kind regards,
> 
> Mike Looijmans
> System Expert
> 
> TOPIC Products
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> 
> 
> 
> 
> 
> -----Original Message-----
>>> From: Masahiro Yamada [mailto:yamada.masahiro at socionext.com]
>>> Sent: 05 October 2016 04:19
>>> Hi.
>>>
>>> Recently I implemented ARM Trusted Firmware BL31 for my SoCs.
>>>
>>> But, I am wondering how the boot-flow should be.
>>>
>> I'm no U-Boot expert but as ARM Trusted Firmware (TF) maintainer, I
>> feel I should say something here.
>>
>> In general we expect partners to take the bits of TF that work best
>> for them. So all the bootflows discussed in this thread are valid as
>> far as I'm concerned:
>>
>> Proprietary Boot ROM -> Proprietary firmware -> TF BL31 -> U-Boot ->
>> Linux
>>
>> Proprietary Boot ROM -> U-Boot SPL -> TF BL31 -> Full U-Boot -> Linux
>>
>> TF BL1 -> TF BL2 -> TF BL31 -> U-Boot or UEFI (BL33) -> Linux
> 
> Regardless of choice here, it would be nice if all those blobs could be
> combined into a single image. Currently the system spends most of its
> boot time looking up binaries, and copying them around from device into
> memory and then relocate them to a final destination.
> 
> The current situation is that I need to create a bunch of tiny flash
> partitions: SPL, BL31, U-boot, devicetree, ...
> 
> What I WANT to have is just one "boot" partition that holds SPL, BL31
> and u-boot, and then have big u-boot access a filesystem (UBI, FAT or
> EXT) to continue from there.


I haven't had a time but Simon sent binman which can solve at least the
part of this.

Thanks,
Michal