STM32MP1 loading of Bkup-FWU-Metadata failed

[FarukSozuer]

Hello everyone,

I made a yocto based build using stm32mp1. After compiling, I followed these steps:

1.  I created 5 different partitions in the SD card. These are as follows.
2.   I uploaded the following files to the partitions I created, respectively.

1. sudo dd if=arm-trusted-firmware/tf-a-stm32mp157d-dk1-sdcard.stm32 of=/dev/sdb1
2. sudo dd if=arm-trusted-firmware/tf-a-stm32mp157d-dk1-sdcard.stm32 of=/dev/sdb2
3. sudo dd if=fip/fip-stm32mp157d-dk1-fastboot-sdcard.bin of=/dev/sdb3
4. sudo dd if=st-image-bootfs-poky-stm32mp1.ext4 of=/dev/sdb4 bs=1M
5. sudo dd if=core-image-minimal-stm32mp1.ext4 of=/dev/sdb5 bs=1M

Later, when I connect to the DK1 board, I get the following error.

When I examine the Flash layout files, I think it does this because it cannot find the FWU_MDATA files. But I don't know the size of the partitions I allocated for FWU_DATA and what type they will be (Linux file system or microsoft basic data). Can you help me with this? Which partitions are missing and what should their file type/size be?

Sinceley

[Christophe Guibout]

Hi @FarukSozuer,

I think it does this because it cannot find the FWU_MDATA files.

You almost answered to your question : if tf-a can't find both metadata partitions, it generates a panic.

The MPU Ecosystem supports A/B mechanism by default, so it means that PSA_FWU_SUPPORT switch is enabled in TF-A, so metadata partitions must be there like in tsv files delivered by default:

P 0x06 metadata1 FWU_MDATA mmc0 0x00084400 arm-trusted-firmware/metadata.bin
P 0x07 metadata2 FWU_MDATA mmc0 0x000C4400 arm-trusted-firmware/metadata.bin

If you don't need A/B mechanism feature and you want to keep your memory mapping, disabling PSA_FWU_SUPPORT switch in tf-a can be an option.

BR,

Christophe

[FarukSozuer]

Hello @Christophe Guibout,

Thanks for reply. Is there an easy way to load image files with STM32CubeProgrammer? Of course there is, but I couldn't find the document explaining this. There are many files and doing this one by one from the terminal can sometimes cause confusion. I am using STM32MP157-DK1 as Eval board. 

Even though I know what the problem is, I haven't found the solution yet :)

I cannot yet correctly set how large the memory space I allocated for FWU_MDATA on the SD card will be (for example, 256KB) and what its Type-ID will be (for example, Linux file system).

Sincelery

[Christophe Guibout · Accepted solution]

Hi @FarukSozuer,

Feel free to look into the wiki : see STM32CubeProgrammer flashlayout page : the size of metadata partition is 256kiB.

The STM32CubeProgrammer page could help you as well.

BR,

Christophe