[PATCH v2 0/9] spl: atf: add support for LOAD_IMAGE_V2

[Michal Simek]

On 20. 11. 20 14:25, Michael Walle wrote:
> Am 2020-11-20 14:16, schrieb Michal Simek:
>> On 20. 11. 20 12:27, Michael Walle wrote:
>>> Am 2020-11-20 12:15, schrieb Michal Simek:
>>>> On 20. 11. 20 11:48, Michael Walle wrote:
>>>>> Am 2020-11-20 11:14, schrieb Michal Simek:
>>>>>> Hi,
>>>>>>
>>>>>> On 18. 11. 20 17:45, Michael Walle wrote:
>>>>>>> Newer TF-A versions provide a new image loading protocol. This is
>>>>>>> used on
>>>>>>> (newer?) NXP's SoCs. Normally, the bootflow is bl1 -> bl2 -> bl31 ->
>>>>>>> u-boot. With this series it is possible that U-Boot SPL loads the
>>>>>>> bl31
>>>>>>> directly and thus replacing bl1 and bl2 from the TF-A.
>>>>>>>
>>>>>>> This was tested on the Kontron sl28 board using NXPs bl31 and the
>>>>>>> upstream
>>>>>>> version of the OP-TEE Trusted OS.
>>>>>>
>>>>>> I still have some questions about this.
>>>>>>
>>>>>> As I see from TFA previous image format has been removed in 2018 by
>>>>>>
>>>>>> commit ed51b51f7a9163a7fc48289c5ed97a3fe4fe504f
>>>>>> Author:     Roberto Vargas <roberto.vargas at arm.com>
>>>>>> AuthorDate: Mon Sep 24 17:20:48 2018 +0100
>>>>>> Commit:     Antonio Nino Diaz <antonio.ninodiaz at arm.com>
>>>>>> CommitDate: Fri Sep 28 15:31:52 2018 +0100
>>>>>>
>>>>>>     Remove build option LOAD_IMAGE_V2
>>>>>>
>>>>>>     The code of LOAD_IMAGE_V2=0 has been removed.
>>>>>>
>>>>>>     Change-Id: Iea03e5bebb90c66889bdb23f85c07d0c9717fffe
>>>>>>     Co-authored-by: Antonio Nino Diaz <antonio.ninodiaz at arm.com>
>>>>>>     Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz at arm.com>
>>>>>>
>>>>>>
>>>>>
>>>>> DOH! Lol, I'm using just one non-upstream part for the whole board
>>>>> and of course it is doing something miserable. I wasn't aware of this.
>>>>>
>>>>>> On Xilinx ZynqMP I use SPL->bl31 loading but not using that TFA
>>>>>> structure because xilinx is using own format.
>>>>>>
>>>>>> But I am curious if V2 was removed in 2018 who is really using
>>>>>> previous
>>>>>> one and also if current implemenation is origin or also not full v2.
>>>>>
>>>>> NXP,
>>>>> https://source.codeaurora.org/external/qoriq/qoriq-components/atf/tree/plat/nxp/common/common.mk#n55
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> The last non-nxp commit there was from around March 2018..
>>>>>
>>>>>> And these patches are not breaking boot on zynqmp that's why not big
>>>>>> deal for me.
>>>>>
>>>>> I was looking at porting TFA to upstream for this board but there is
>>>>> such a huge gap. Therefore, it seemed to be easier to just use the
>>>>> vendor version for now.
>>>>
>>>> Please get this reviewed by people who are using current blX code.
>>>
>>> What do you mean by blX code? Nobody is using this flow for now, i.e.
>>>   spl -> bl31 -> u-boot
>>
>> As I said I am not quite sure about it. I see that rockchip guys are
>> using ATF and they also call that code in ATF. They should know which
>> version the use.
> 
> NXP imx8 also uses u-boot -> bl31 as far as I know.
> 
>> Definitely check with them to ack your patches.
> 
> I've put Kever (who did the initial patches for rockchip) on CC for this.
> But again they are using the old method. So lets assume they will ignore
> this series (for whatever reason), won't it be accepted then? I mean
> this series doesn't touch the old behavior, just adding a new one.

up to Priyanka or Tom.
I have no problem with your patches because we are not using this method
and your patches doesn't break our SPL boot flow.

Thanks,
Michal