Hello,
I'm encountering issues with enabling the High Assurance Boot (HAB) feature on the iMX8M Mini module when using different versions of U-Boot (2022 vs. 2023).
=> U-Boot 2023.04 works fine (No HAB events found, as expected).
=> U-Boot 2022.04 does not work fine (generates HAB events, see below).
I attached two bash script (u-boot-2022-hab-variscite-builder and u-boot-2023-hab-variscite-builder) showing the details of the steps I performed for building both U-Boot binaries.
I also attached txt log files of both builds (launched with bash scripts) and resulting CSF *.txt files for generating SPL and FIT binaries using Code Signing Tool.
All these files have been included into a single zip archive (HAB-Issues-iMX8MM.zip) attached to this post.
Here is the logs showing the HAB Events I obtained from the 2022 u-boot version build, when trying to boot my demo board (imx8mm-var-som-symphony).
U-Boot 2022.04-64036-g9a1f574209-dirty (Aug 29 2024 - 17:34:22 +0200)
CPU: i.MX8MMQ rev1.0 1600 MHz (running at 1200 MHz)
CPU: Industrial temperature grade (-40C to 105C) at 34C
Reset cause: POR
Model: Variscite VAR-SOM-MX8M-MINI
DRAM: 2 GiB
Core: 73 devices, 23 uclasses, devicetree: separate
MMC: FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... *** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
PTN5150: Vendor ID [0x3], Version ID [0x1], Addr [I2C1 0x3d]
Part number: VSM-MX8MM-503
Assembly: AS312212751
Production date: 2024 Jan 04
Serial Number: f8:dc:7a:d0:71:f8
switch to partitions #0, OK
mmc1 is current device
flash target is MMC:1
Net: ADIN1300 PHY detected at addr 4
eth0: ethernet@30be0000
Fastboot: Normal
Normal Boot
Hit any key to stop autoboot: 0
u-boot=> hab_status
Secure boot disabled
HAB Configuration: 0xf0, HAB State: 0x66
--------- HAB Event 1 -----------------
event data:
0xdb 0x00 0x14 0x43 0x33 0x22 0x33 0x00
0x00 0x00 0x00 0x0f 0x00 0x7e 0x0b 0xc0
0x00 0x03 0xf8 0x00
STS = HAB_FAILURE (0x33)
RSN = HAB_INV_ADDRESS (0x22)
CTX = HAB_CTX_TARGET (0x33)
ENG = HAB_ENG_ANY (0x00)
--------- HAB Event 2 -----------------
event data:
0xdb 0x00 0x14 0x43 0x33 0x22 0x33 0x00
0x00 0x00 0x00 0x0f 0x00 0x7e 0x0b 0xc0
0x00 0x03 0xf6 0x60
STS = HAB_FAILURE (0x33)
RSN = HAB_INV_ADDRESS (0x22)
CTX = HAB_CTX_TARGET (0x33)
ENG = HAB_ENG_ANY (0x00)
Could you gently help me in understanding what is wrong here?
