The problem is acknowledged, indeed. The base FVP model's DTs were initially imported from the Linux tree, but they haven't received any updates since then. In the meantime, the DTC and DT schema compliance tooling in the kernel tree became stricter, resulting in the old files now generating warnings.
You could just go ahead and correct each of those warnings, however I'm really working on reorganizing the FVP DT files so we can sync them from the kernel tree. That should automatically resolve those messages. Retro Bowl College

Replace the first few bytes of the file with your updated binary if you simply need to update bl31.bin.
Bl31.bin may be created from its source code using simply an aarch64 (cross-)compiler. Bitlife

If you have the means to test different configurations or gather additional debugging information, it can help diagnose the issue slope unblocked and find a solution.

This issue is introduced with commit dd108c3c1fe3 ("feat(imx8mq): add the dram retention support for imx8mq").

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This might be related to https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/18661/5 tiny fishing

TF-A's secure partition handling is covered in detail in the existing code and documentation, so start there. Recognize the constraints of the current system, including the amount of secure partitions, and how it operates. skribbl io

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This issue is introduced with commit dd108c3c1fe3 ("feat(imx8mq): add the dram retention support for imx8mq").

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Start by thoroughly reviewing the existing code and documentation related to secure retro bowl partition handling in TF-A. Understand how the current system works and where the limitations are regarding the number of secure partitions

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That change is precisely what's required to fix the issue. I just said above that installing a patch restores the computer's normal booting behavior. pge outage map

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That change is precisely what is required to remedy the issue. I only said there that deploying a patch restores normal booting of the PC. only up

"Secure partitioning" usually involves dividing into separate areas on a device or computer, slope each with its own environment and access rights. This helps prevent unwanted interference between different parts of the system.

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This might be related to https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/18661/5 mapquest driving directions

That adjustment is exactly what's needed to resolve the problem. I just made a remark there saying that applying a patch makes booting up the computer regular again.Moto X3M

If you only need to update bl31.bin, you can do it by replacing the first few bytes of the file with your modified binary.
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Ensure that the changes made to the SPMC are correct and compatible with the i.MX8M slither io platform. Verify if any misconfigurations or errors were introduced during the modification process.

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TF-A maintains a release cycle of once every six months, and in most cases, we upgrade the gcc toolchain to the most recent version available in conjunction with the TF-A release.
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It sounds like you are working on a project that involves saving and restoring the full SVE registers in the context when CTX_INCLUDE_FPREGS=1 is enabled. I’m glad to hear that you have a plan to fix this issue. I think that this link can help you: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/tree/docs/getting_started/build-options.rst#n409 time shooter 2

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I pulled this request: https://github.com/ARM-software/arm-trusted-firmware/pull/1988 shell shockers 2 and it's ok.

If you would like to change the rankdle baudrate back to 1500000 or any other desired value, you will need to modify the RK3399_BAUDRATE definition in the rk3399_def.h file to reflect your preferred baudrate. After making the change, you will need to rebuild and flash the firmware for it to take effect.

Fails on 2.9.0

In T996#12020, @bith3ad wrote:

Please see https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/19401 which should fix this for all targets.

A fix has been made available through the patch https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/18679. It is now merged. Thanks to Sylwester Garncarek.

Please see https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/19401 which should fix this for all targets.

The patch stack is still a work in progress so BL1 is the only fixed image so far, but BL2 and BL31 need the same treatment. Your best bet until I get around to applying these fixes to the remaining images is the current workaround (TF_LDFLAGS="--no-warn-rwx-segment").

Thanks, good to know. So, 2.9 will likely carry a fix? Is there a better patch I can use already (the one referenced does not directly appear to solve the issue)?

Hi Jan, sorry for the delay. This is currently in progress under the mixed-rwx topic: https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/18661/5

What's the status of this? Currently trying to build TF-A against the bookworm toolchain, and there the warning is even fatal. For now I'm working around it with this patch:

I want to find a way to clean a memory region in TF-A firmware.

I want to find a way to clean a memory region in TF-A firmware.

Can you elaborate what you mean by "clean" ?
From the description it seems to be a simple memset, in which case data may remain in caches.
Does the requested operation need to complete to memory e.g. involving cache clean?

Found a fix in atf master which seems to touch on exactly this issue: https://github.com/ARM-software/arm-trusted-firmware/commit/fa7fdfabf07d91439b0869ffd8e805f0166294bf

There may be something wrong with my network that I can't visit https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a. I will follow up this issue after my network is fixed.

fix submitted

Patch from Bug submitter also raised https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/17768

I agree with the idea and its a good capability to have. I don't thing there will be many TF-A build flags which has chance of name collision with environment variables. we can add TF-A prefix to them.

Hi Andre-ARM, to fix the problem, here's the pull request: https://github.com/ARM-software/arm-trusted-firmware/pull/1988

In T1003#11851, @Andre-ARM wrote:

Hi,
thanks for the info, I will have a look at this, though probably only later this week.
As for rebuilding: I assume you are using the firmware drops from the pftf github?
This is deeply hidden in the EDK2 build system, but it will effectively use a precompiled version of bl31.bin checked into the edk2-non-osi.git repository. This will be placed into the first 128KB of RPI_EFI.fd file, filled up with 0xff.
So to replace just bl31.bin, you simply overwrite the first part of that file, with your compiled version.
To get bl31.bin from source, you just need an aarch64 (cross-)compiler, then:
$ CROSS_COMPILE=aarch64-linux-gnu- make PLAT=rpi4 DEBUG=0
This should be described in docs/plat/rpi4.rst. If you find something missing, let me know, or even better: send a patch ;-)

Hi,
thanks for the info, I will have a look at this, though probably only later this week.
As for rebuilding: I assume you are using the firmware drops from the pftf github?
This is deeply hidden in the EDK2 build system, but it will effectively use a precompiled version of bl31.bin checked into the edk2-non-osi.git repository. This will be placed into the first 128KB of RPI_EFI.fd file, filled up with 0xff.
So to replace just bl31.bin, you simply overwrite the first part of that file, with your compiled version.
To get bl31.bin from source, you just need an aarch64 (cross-)compiler, then:
$ CROSS_COMPILE=aarch64-linux-gnu- make PLAT=rpi4 DEBUG=0
This should be described in docs/plat/rpi4.rst. If you find something missing, let me know, or even better: send a patch ;-)

In T1003#11849, @Andre-ARM wrote:

So that's a lot of details (thanks for that!), but what is the actual problem? That secondaries cannot be taken offline? Or that they don't came back online? And did that work before the commit you mentioned?

So that's a lot of details (thanks for that!), but what is the actual problem? That secondaries cannot be taken offline? Or that they don't came back online? And did that work before the commit you mentioned?

I can confirm this occurs with binutils 2.39. We (coreboot) are trying to update binutils from our toolchain and we are about to adjust our build system. --no-warn-rwx-segment fixes the issue. https://review.coreboot.org/c/coreboot/+/66920

Pinging @Andre-ARM RPi4 platform code owner for comment.

Hello Olivier,

Thanks for your reply. Looks like there is a fix under works:

Adding that the linking warns about both rwx-sections and execstack for bl2 too.
So both are needed or the linking needs to be fixed.
I think the no-warn flags are only available to newer tools, so defaulting to them will probably break things.

Hello Olivier,

Hi,
From the logs I understand BL31 is started by U-Boot SPL rather than TF-A's BL1/BL2, correct?
Would it be possible to gather more verbose logs (build with DEBUG=1 LOG_LEVEL=50) ?
Can you share the TF-A command line used to build this platform?
In particular what's the state of EL3_EXCEPTION_HANDLING, SPD, SPMD_SPM_AT_SEL2 toggles?
Thanks, Olivier.

Ping @raghuncstate for comment https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/commit/?id=7c2fe62f1347bb94d82e9fdd3bc5eaebedaf0bc7

Hey Chris, I may have raised the bug wrong we are tracking internally as its binutils-2.39, sorry!

Hi Heitbaum, could you tell me which toolchain you're using to build TF-A? The latest Arm GNU AArch64 toolchain is 11.3.Rel1, which packages binutils-2.38 and therefore compiles successfully, so I'm currently unable to reproduce this error.

I see. Thanks for the replies. Feel free to close this task then.

Regarding this web page reporting system its mainly now being used for Bug reporting. There is now a TF-A mailing list https://lists.trustedfirmware.org/mailman3/lists/tf-a.lists.trustedfirmware.org/ where many more people can help with questions.

Yes, this is a known issue. The DTs for the base FVP model were once imported from the Linux tree, but haven't been updated since. Meanwhile both DTC and the DT schema compliance tooling in the kernel tree got stricter, so the old files trigger warnings now.
One could go ahead and just fix each of those warnings, but I am actually working on rearranging the FVP DT files, so we can sync them from the kernel tree. That should fix those messages automatically.

I tried to follow the guidelines on https://github.com/ARM-software/tf-issues but I can't find where to add the "question" label. Sorry about this.

Hi Heitaum, Thanks for reporting this.

Sure, people are of course free to do what they want downstream. Especially as a temporary measure if this is ultimately needed to be upstreamed with fuller discussion once other stakeholders are available to facilitate that.

Thanks Joanna for letting know. This is actually blocking development so I'm thinking we go ahead with a local change that we think will be best and then we can discuss that change when Soby is back. What do you think?