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Fix Tinker Board S (eMMC) boot (#650) (#845)

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* Fix Tinker Board S (eMMC) boot (#650)

Use Tinker Board S U-Boot configuration which is capable to boot from
eMMC as well as from SD card.

Note that this makes U-Boot always claiming to run on Tinker Board S:
..
Model: Rockchip RK3288 Asus Tinker Board S
..

It seems that there is no generic Tinker Board configuration. However,
Tinker Board S configuration really seems to work well with Tinker Board
as well, so just use it.

Also today the U-Boot Makefile seems to generate a working idbloader.img
already. Drop our special handling.

* Use Tinker Board S device tree if booting from eMMC for Linux

Instead of patching the Tinker Board device tree, select the device tree
based on what device we are booting from.

Note: This boots the non-S device tree when booting a Tinker Board S
from SD card! But there is no reliable detection otherwise, so let's
just live with that fact.

* Document how to use our U-Boot to flash eMMC
This commit is contained in:
Stefan Agner
2020-09-04 21:05:49 +02:00
committed by GitHub
parent a2a4cf8668
commit 2e2f6e893b
9 changed files with 151 additions and 63 deletions
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6
buildroot-external/board/asus/tinker/uboot-boot.ush
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@@ -27,7 +27,11 @@ setenv bootargs_b "root=PARTUUID=a3ec664e-32ce-4665-95ea-7ae90ce9aa20 rootfstype
fileenv mmc ${devnum}:1 ${ramdisk_addr_r} cmdline.txt cmdline
# Load device tree
fatload mmc ${devnum}:1 ${fdt_addr_r} rk3288-tinker.dtb
if test "$devnum" = "0"; then
fatload mmc ${devnum}:1 ${fdt_addr_r} rk3288-tinker-s.dtb
else
fatload mmc ${devnum}:1 ${fdt_addr_r} rk3288-tinker.dtb
fi
setenv bootargs
for BOOT_SLOT in "${BOOT_ORDER}"; do