We recently bought the RB3 Development kit. Trying to flash a Yocto build image with fastboot has not been successful after repeated attempts.
Documentation I am referring:
We also have our Yocto build images, but of course that does not make of a difference with fastboot failing. The images I am trying to work with.
Since the board came with some default Linux image, we tried to flash the boot and rootfs images. But, fastboot would continuously fail.
After reading on another forum post, that bootloader might need an update first, we tried that but since that also needs fastboot, it did not work. From what I understand, the different bootloader images also decide the GPT partitioning and affect the next stage boot/rootfs flashing.
Then tried recovery using EDL mode, which seemed to have worked looking at QDL stdout, but fastboot still fails.
The documentation says while connecting RB3 to host
- RB3 must be powered off (unplugged from power)
- S6 switch on RB3 must be set to ‘0-0-0-0’. All switches should be in “off” position
This means I cannot use USB debug port but after no output from running the
flash_all.sh script, trying to flash with debug console connected shows
Launching fastboot Fastboot Build Info: Sep 5 2022 15:18:55 qusb2_1: hstx: 7 PLL1 locked: 5 usb_lane: 0 Fastboot: Initializing... Fastboot: Processing commands Fastboot Action (Press <Right> to select): SAT Handling Cmd: getvar:has-slot:partition Handling Cmd: Fastboot Send Fail Handling Cmd: getvar:is-logical:partit Handling Cmd: download:0000b000:partit DXE_ASSERT!: /home/buildslave/workspace/lt-qcom-bootloader-dragonboard845c/abl_linux/MdePkg/Library/BaseLib/SafeString.c (691): (DestMax > SourceLen)
The last message points to an error coming from ABL Linux which seems like a problem with UEFI firmware? (ABL Linux seems like a custom fork of EDK2)
Also, the official A845-2.160400.10.00350.1-P1-D-201909041517 image from Thundercomm for this kit/board gives no different results.
Can someone help and guide how to proceed further?