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configs/kontron_smarc_sal28: enable u-boot

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Enable building of the bootloader and integrate it into the resulting
image.

Signed-off-by: Michael Walle <michael@walle.cc>
Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Michael Walle 2021-01-13 20:09:48 +01:00 committed by Yann E. MORIN
parent 89cd2549ed
commit c0ce904fca
3 changed files with 31 additions and 0 deletions
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6
board/kontron/smarc-sal28/genimage.cfg
View File

@ -3,6 +3,12 @@ image sdcard-emmc.img {
gpt = true
}
partition u-boot {
offset = 1M
in-partition-table = "no"
image = "u-boot.rom"
}
partition rootfs {
offset = 2M
image = rootfs.ext4

15
board/kontron/smarc-sal28/readme.txt
View File

@ -71,3 +71,18 @@ You will see something like this at boot time:
[ 4.563565] GPT:Alternate GPT header not at the end of the disk.
[ 4.569596] GPT:266272 != 7864319
[ 4.572925] GPT: Use GNU Parted to correct GPT errors.
Updating the bootloader
=======================
Buildroot will automatically build the u-boot bootloader. The resulting
image is called u-boot.rom and you can find it in the images/ directory.
To update the bootloader on the board you could either copy it to an
USB thumb drive or you could put it on a TFTP server. The following
example assumes you have the bootloader image copied to the root of
a thumb drive:
# usb start
# load usb 0:1 $loadaddr u-boot.rom
# sf probe 0 && sf update $fileaddr 0x210000 $filesize

10
configs/kontron_smarc_sal28_defconfig
View File

@ -19,5 +19,15 @@ BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
BR2_TARGET_ROOTFS_EXT2=y
BR2_TARGET_ROOTFS_EXT2_4=y
BR2_TARGET_ROOTFS_EXT2_SIZE="128M"
BR2_TARGET_UBOOT=y
BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
BR2_TARGET_UBOOT_CUSTOM_VERSION=y
BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2021.01"
BR2_TARGET_UBOOT_BOARD_DEFCONFIG="kontron_sl28"
BR2_TARGET_UBOOT_NEEDS_DTC=y
BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
# BR2_TARGET_UBOOT_FORMAT_BIN is not set
BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot.rom"
BR2_PACKAGE_HOST_GENIMAGE=y
BR2_PACKAGE_HOST_UBOOT_TOOLS=y