sk-am62b images do not boot

[anthony winner]

The distributed images for sk-am62b do not boot, tried both the "Armbian 24.5.1 Bookworm Minimal" and the "Armbian 24.5.1 Noble CLI" , both only output a u-boot message and then hang:

U-Boot SPL 2023.04-g8366064208 (May 20 2024 - 02:37:44 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.8--v09.02.08 (Kool Koala)')
SPL initial stack usage: 13408 bytes

 

Method of test:

Download and write image VIA etcher to a SD card and attempt boot.

 

Note using the same method to write the Debian or Yocto  image from TI boots as normal. 

 

For reference, messages from TI Debian boot:

U-Boot SPL 2023.04 (May 27 2024 - 20:11:30 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.8--v09.02.08 (Kool Koala)')
SPL initial stack usage: 13392 bytes
Trying to boot from MMC2
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.10.0(release):v2.10.0-367-g00f1ec6b8
NOTICE:  BL31: Built : 20:11:18, May 27 2024
I/TC:
I/TC: OP-TEE version: 4.1.0-51-g012cdca49 (gcc version 13.2.1 20231009 (Arm GNU Toolchain 13.2.rel1 (Build arm-13.7))) #1 Mon May 27 20:11:23 UTC 2024 aarch64
I/TC: WARNING: This OP-TEE configuration might be insecure!
I/TC: WARNING: Please check https://optee.readthedocs.io/en/latest/architecture/porting_guidelines.html
I/TC: Primary CPU initializing
I/TC: GIC redistributor base address not provided
I/TC: Assuming default GIC group status and modifier
I/TC: SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.8--v09.02.08 (Kool Koala)')
I/TC: HUK Initialized
I/TC: Activated SA2UL device
I/TC: Enabled firewalls for SA2UL TRNG device
I/TC: SA2UL TRNG initialized
I/TC: SA2UL Drivers initialized
I/TC: Primary CPU switching to normal world boot

same SD card, same hw / same switch settings on HW, ....

[anthony winner]

I also tried, which is the oldest image I can find, and it acts the same as the other Armbian images. i.e. fail in same way. :

Armbian_24.2.1_Sk-am62b_bookworm_edge_6.6.16_minimal.img.xz

[anthony winner]

I believe this is a difference in a "am62b" and a "am62-lp" any advice on modifying the build to the LP version of the MCU?

[anthony winner]

tried adding the LP versions of the files specified

# TI AM62 quad core 2GB 2xGBE OSPI HDMI

BOARD_NAME="SK-AM62B"
BOARDFAMILY="k3"
BOARD_MAINTAINER="glneo"
BOOTCONFIG="am62x_evm_a53_defconfig"
BOOTFS_TYPE="fat"
BOOT_FDT_FILE="ti/k3-am625-lp-sk.dts"
TIBOOT3_BOOTCONFIG="am62x_lpsk_r5_defconfig"
TIBOOT3_FILE="tiboot3-am62x-hs-fs-evm.bin"
DEFAULT_CONSOLE="serial"
HAS_VIDEO_OUTPUT="no"
KERNEL_TARGET="edge"
SERIALCON="ttyS2"
ATF_BOARD="lite"

in the board file, but still no luck, wish there was a document of "how I got this board to boot with Armbian", so that for similar boards we could try to reproduce the work.

 

Can't find a "sk-am62b board to test the default build on as they are obsolete, being replaced by the one I'm trying to get to work. 

[Werner]

6 hours ago, anthony winner said:

wish there was a document of "how I got this board to boot with Armbian"

That would be impossible to create since all boards have different demands to make them work.

Here are a few examples on how to add a new board or whole family: https://docs.armbian.com/Developer-Guide_Adding-Board-Family/

[Andrei Aldea]

The main difference between the two is AM62B uses DDR4 and AM62-LP uses LPDDR4 - also AM62-LP uses the AMC package device. Anyway, I think because the board is so old it probably used GP vs HS-FS silicon like the modern boards so you need to adjust the config file to include something like this -

 

TIBOOT3_FILE="tiboot3-am62x-gp-evm.bin"
TISPL_FILE="tispl.bin_unsigned"
UBOOT_FILE="u-boot.img_unsigned"

 

So this config should work - it uses the GP silicon version of the images. BeaglePlay is the only current production AM62x board with GP silicon.

 

BOARD_NAME="SK-AM62-LP"
BOARDFAMILY="k3"
BOARD_MAINTAINER="nobody"
BOOTCONFIG="am62x_evm_a53_defconfig"
BOOTFS_TYPE="fat"
BOOT_FDT_FILE="ti/k3-am625-lp-sk.dts"
TIBOOT3_BOOTCONFIG="am62x_lpsk_r5_defconfig"
TIBOOT3_FILE="tiboot3-am62x-gp-evm.bin"
TISPL_FILE="tispl.bin_unsigned"
UBOOT_FILE="u-boot.img_unsigned"
DEFAULT_CONSOLE="serial"
HAS_VIDEO_OUTPUT="no"
KERNEL_TARGET="edge"
SERIALCON="ttyS2"
ATF_BOARD="lite"