Hello:
I am trying to set up a secure boot for the bottloader and kernel in the iMX8MP following the instructions in the URL https://source.codeaurora.org/external/imx/uboot-imx/tree/doc/imx/habv4/guides/mx8m_mx8mm_secure_boo...
According to the instructions, a DTB file is required to assembly the signed bootloader:
1.3 Preparing the fit image
----------------------------
The imx-mkimage project is used to combines all the images in a single
flash.bin binary, the following files are required:
- U-Boot:
u-boot.bin
u-boot-nodtb.bin
u-boot-spl.bin
U-Boot DTB file (e.g. fsl-imx8mq-evk.dtb)
But then a DTB file is also required with the kernel, as can be seen in the CSF file in https://source.codeaurora.org/external/imx/uboot-imx/tree/doc/imx/habv4/csf_examples/additional_imag...
[Authenticate Data]
# Key slot index used to authenticate the image data
Verification index = 2
# Authenticate Start Address, Offset, Length and file
Blocks = 0x80800000 0x00000000 0x006EA000 "zImage", \
0x83800000 0x00000000 0x0000B927 "imx7d-sdb.dtb", \
0x84000000 0x00000000 0x000425B8 "uTee-7dsdb"
Are these DTB files the same file? If not, which are the differences?
Thank you very much in advance and best regards.
