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@arm.com AuthorDate: Mon Sep 24 17:20:48 2018 +0100 Commit: Antonio Nino Diaz antonio.ninodiaz@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@arm.com> Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@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/...
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.
-michael