TF-A buld failed, u-boot-stm32mp157a-dk1-trusted.dtb file dtb missing,but I found in folder

I used this :​make -f $PWD/../Makefile.sdk TFA_DEVICETREE=stm32mp157c-ev1 TF_A_CONFIG=trusted ELF_DEBUG_ENABLE='1' all

I met this problem too. Then I tried to export the environment variable $FIP_DEPLOYDIR_ROOT.

1. Try to find where is "u-boot-stm32mp157a-dk1-trusted.dtb" file by searching.
2. Go to the building directory. In your case is "...eloper-Package/stm32mp1-openstlinux-5.10-dunfell-mp1-21-03-31/sources/arm-ostl-linux-gnueabi/tf-a-stm32mp-2.4.r1-r0/tf-a-stm32mp-2.4.r1"
3. Export environment variable

export $FIP_DEPLOYDIR_ROOT= <some path to folder>

<some path to folder> depends on work folders. In my case it was:

export $FIP_DEPLOYDIR_ROOT=$PWD/../../FIP_artifacts

Where "$PWD" -command defines your building directory, "/../../" - means two folders up directory. FIP_artifacts - folder where u-boot the folder is located.

In my case my building directory was:

Developer-Package/stm32mp1-openstlinux-5.10-dunfell-mp1-21-03-31/sources/arm-ostl-linux-gnueabi/tf-a-stm32mp-2.4.r1-r0/tf-a-stm32mp-2.4.r1

u-boot locating directory was:

Developer-Package/stm32mp1-openstlinux-5.10-dunfell-mp1-21-03-31/sources/arm-ostl-linux-gnueabi/FIP_artifacts

Therefore I used only 2 up folders (/../../).

Unfortunately I got another similar problem with another file after that.

Missing stm32mp157c-ev1-fw-config-optee.dtb =(