u-boot-brain

History

Marc Ferland 37648b600c arm: dart6ul: read and print SoM info from eeprom on startup The dart6ul has an i2c eeprom at 0x50 which contains, among other things, the manufacturing/revision/options info of the SoM. This patch replaces the current checkboard() implementation with a more exhaustive one based on the content of the eeprom. Since this code uses the new driver model, some changes were also required in the DTS to make the nodes related to i2c available before relocation. This code was inspired from the supported u-boot code from Variscite which can be found here: https://github.com/varigit/uboot-imx/tree/imx_v2018.03_4.14.78_1.0.0_ga_var02 New output example: Board: PN: VSM-6UL-705B, Assy: AS1812142257, Date: 2019 Feb 17 Storage: eMMC, Wifi: yes, DDR: 1024 MiB, Rev: 2.4G Signed-off-by: Marc Ferland <ferlandm@amotus.ca> Reviewed-by: Fabio Estevam <festevam@gmail.com>		2020-12-26 14:56:09 +01:00
..
Kconfig	imx: Add variscite DART-6UL Evaluation Kit	2019-04-25 19:16:24 +02:00
MAINTAINERS	imx: Add variscite DART-6UL Evaluation Kit	2019-04-25 19:16:24 +02:00
Makefile	imx: Add variscite DART-6UL Evaluation Kit	2019-04-25 19:16:24 +02:00
README	imx: Add variscite DART-6UL Evaluation Kit	2019-04-25 19:16:24 +02:00
dart_6ul.c	arm: dart6ul: read and print SoM info from eeprom on startup	2020-12-26 14:56:09 +01:00
spl.c	treewide: convert bd_t to struct bd_info by coccinelle	2020-07-17 09:30:13 -04:00

README

How to use U-Boot on variscite DART-6UL Evaluation Kit
------------------------------------------------------

- Configure and build U-Boot for DART-6UL iMX6ULL:

    $ make mrproper
    $ make variscite_dart6ul_defconfig
    $ make

  This will generate SPL and u-boot-dtb.img images.

Boot from MMC/SD:
- The SPL and u-boot-dtb.img images need to be flashed into the micro SD card:

    $ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
    $ sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync

- Boot mode settings:

  Boot switch position: SW1 -> 0
			SW2 -> 0

Boot from eMMC:
- if bootpart is not enabled by default, to enable under Linux
	echo 0 >/sys/block/mmcblk1boot0/force_ro
	mmc bootpart enable 1 1 /dev/mmcblk1boot0

- Flash the SPL and u-boot-dtb.img to mmcblk1boot0
    $ sudo dd if=SPL of=/dev/mmcblk1boot0 bs=1k seek=1; sync
    $ sudo dd if=u-boot-dtb.img of=/dev/mmcblk1boot0 bs=1k seek=69; sync

- Boot mode settings:

  Boot switch position: SW1 -> 0
			SW2 -> 1

- Connect the Serial cable to UART0 and the PC for the console.

- Insert the micro SD card in the board and power it up.

- U-Boot messages should come up.