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configs/rock5b: enable uboot-env on the SD card

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Having the uboot environment defined on the SD card allows the user to
use the uboot setenv and saveenv commands to make persistent changes
(e.g. to change the boot order, or to set a server IP for PXE boot).

Set the uboot-env partition type GUID to "U-Boot environment", see:
https://github.com/u-boot/u-boot/blob/v2024.10/doc/README.gpt#L288
https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
and enable CONFIG_PARTITION_TYPE_GUID such that uboot will automatically
find the SD card partition to store/load the uboot environment to.

We need to mark the root partition as bootable, otherwise uboot will no
longer be able to boot the partition by default. (Most likely because
the root partition is now no longer the first partition on the device.)

Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Niklas Cassel 2024-10-23 20:25:09 +02:00 committed by Thomas Petazzoni
parent 6b4bd26962
commit 93487f1566
3 changed files with 13 additions and 0 deletions
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7
board/radxa/rock5b/genimage.cfg
View File

@ -11,8 +11,15 @@ image sdcard.img {
offset = 32K
}
partition uboot-env {
partition-type-uuid = 3de21764-95bd-54bd-a5c3-4abe786f38a8
offset = 16M
size = 64K
}
partition rootfs {
partition-type-uuid = L
image = "rootfs.ext2"
bootable = true
}
}

5
board/radxa/rock5b/u-boot.fragment Normal file
View File

@ -0,0 +1,5 @@
CONFIG_ENV_SIZE=0x10000
CONFIG_PARTITION_TYPE_GUID=y
# CONFIG_ENV_IS_NOWHERE is not set
CONFIG_ENV_IS_IN_MMC=y
CONFIG_SYS_MMC_ENV_DEV=1

1
configs/rock5b_defconfig
View File

@ -34,6 +34,7 @@ BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
BR2_TARGET_UBOOT_CUSTOM_VERSION=y
BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2024.10"
BR2_TARGET_UBOOT_BOARD_DEFCONFIG="rock5b-rk3588"
BR2_TARGET_UBOOT_CONFIG_FRAGMENT_FILES="board/radxa/rock5b/u-boot.fragment"
BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
BR2_TARGET_UBOOT_NEEDS_PYELFTOOLS=y
BR2_TARGET_UBOOT_NEEDS_OPENSSL=y