[Buildroot] [PATCH v2] configs/kontron_smarc_sal28: enable u-boot

[Yann E. MORIN]

Michael, All,

On 2021-01-13 20:09 +0100, Michael Walle spake thusly:
> Enable building of the bootloader and integrate it into the resulting
> image.
> 
> Signed-off-by: Michael Walle <michael at walle.cc>

Both applied to master, thanks.

Regards,
Yann E. MORIN.

> ---
> changes since v1:
>  - added BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y, thanks Heiko
> 
>  board/kontron/smarc-sal28/genimage.cfg |  6 ++++++
>  board/kontron/smarc-sal28/readme.txt   | 15 +++++++++++++++
>  configs/kontron_smarc_sal28_defconfig  | 10 ++++++++++
>  3 files changed, 31 insertions(+)
> 
> diff --git a/board/kontron/smarc-sal28/genimage.cfg b/board/kontron/smarc-sal28/genimage.cfg
> index 9ef37de757..d75234d997 100644
> --- a/board/kontron/smarc-sal28/genimage.cfg
> +++ b/board/kontron/smarc-sal28/genimage.cfg
> @@ -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
> diff --git a/board/kontron/smarc-sal28/readme.txt b/board/kontron/smarc-sal28/readme.txt
> index 2047f09b64..bdf2258b59 100644
> --- a/board/kontron/smarc-sal28/readme.txt
> +++ b/board/kontron/smarc-sal28/readme.txt
> @@ -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
> diff --git a/configs/kontron_smarc_sal28_defconfig b/configs/kontron_smarc_sal28_defconfig
> index b88f1aef4f..a8412b9c38 100644
> --- a/configs/kontron_smarc_sal28_defconfig
> +++ b/configs/kontron_smarc_sal28_defconfig
> @@ -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
> -- 
> 2.20.1
> 
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