[Buildroot] [PATCH v6 4/4] configs/freescale_imx8mqevk: new defconfig

From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH v6 4/4] configs/freescale_imx8mqevk: new defconfig
Date: Mon, 9 Apr 2018 22:42:24 +0200	[thread overview]
Message-ID: <20180409224224.7ba2379a@windsurf> (raw)
In-Reply-To: <1520682702-10035-5-git-send-email-karl.erik.larsson@gmail.com>

Hello Erik,

On Sat, 10 Mar 2018 12:51:42 +0100, Erik Larsson wrote:

> diff --git a/board/freescale/common/imx/post-image.sh b/board/freescale/common/imx/post-image.sh
> index b239743..4c77ae2 100755
> --- a/board/freescale/common/imx/post-image.sh
> +++ b/board/freescale/common/imx/post-image.sh
> @@ -7,10 +7,10 @@
>  #
>  dtb_list()
>  {
> -	local DTB_LIST="$(sed -n 's/^BR2_LINUX_KERNEL_INTREE_DTS_NAME="\([a-z0-9 \-]*\)"$/\1/p' ${BR2_CONFIG})"
> +	local DTB_LIST="$(sed -n 's/^BR2_LINUX_KERNEL_INTREE_DTS_NAME="\([\/a-z0-9 \-]*\)"$/\1/p' ${BR2_CONFIG})"
>  
>  	for dt in $DTB_LIST; do
> -		echo -n "\"$dt.dtb\", "
> +		echo -n "\"`basename $dt`.dtb\", "
>  	done
>  }
>  
> @@ -23,6 +23,8 @@ linux_image()
>  {
>  	if grep -Eq "^BR2_LINUX_KERNEL_UIMAGE=y$" ${BR2_CONFIG}; then
>  		echo "\"uImage\""
> +	elif grep -Eq "^BR2_LINUX_KERNEL_IMAGE=y$" ${BR2_CONFIG}; then
> +		echo "\"Image\""
>  	else
>  		echo "\"zImage\""
>  	fi

Those two changes could be in a patch reworking post-image.sh to be
compatible with arm64.

> @@ -30,19 +32,39 @@ linux_image()
>  
>  genimage_type()
>  {
> -	if grep -Eq "^BR2_TARGET_UBOOT_SPL=y$" ${BR2_CONFIG}; then
> +	if grep -Eq "^BR2_PACKAGE_FREESCALE_IMX_PLATFORM_IMX8M=y$" ${BR2_CONFIG}; then
> +		echo "genimage.cfg.template_imx8"
> +	elif grep -Eq "^BR2_TARGET_UBOOT_SPL=y$" ${BR2_CONFIG}; then
>  		echo "genimage.cfg.template_spl"
>  	else
>  		echo "genimage.cfg.template"
>  	fi
>  }
>  
> +gen_imx8_boot()
> +{
> +	cat ${BINARIES_DIR}/lpddr4_pmu_train_1d_imem_pad.bin ${BINARIES_DIR}/lpddr4_pmu_train_1d_dmem_pad.bin > ${BINARIES_DIR}/lpddr4_pmu_train_1d_fw.bin
> +	cat ${BINARIES_DIR}/lpddr4_pmu_train_2d_imem_pad.bin ${BINARIES_DIR}/lpddr4_pmu_train_2d_dmem.bin > ${BINARIES_DIR}/lpddr4_pmu_train_2d_fw.bin
> +	cat ${BINARIES_DIR}/u-boot-spl.bin ${BINARIES_DIR}/lpddr4_pmu_train_1d_fw.bin ${BINARIES_DIR}/lpddr4_pmu_train_2d_fw.bin > ${BINARIES_DIR}/u-boot-spl-ddr.bin
> +	rm -f ${BINARIES_DIR}/lpddr4_pmu_train_1d_fw.bin ${BINARIES_DIR}/lpddr4_pmu_train_2d_fw.bin
> +
> +	BL31=${BINARIES_DIR}/bl31.bin BL33=${BINARIES_DIR}/u-boot.bin ${HOST_DIR}/bin/mkimage_fit_atf.sh ${BINARIES_DIR}/fsl-imx8mq-evk.dtb > ${BINARIES_DIR}/u-boot.its
> +	${HOST_DIR}/bin/mkimage -E -p 0x3000 -f ${BINARIES_DIR}/u-boot.its ${BINARIES_DIR}/u-boot.itb
> +	rm -f ${BINARIES_DIR}/u-boot.its
> +
> +	${HOST_DIR}/bin/mkimage_imx8 -fit -signed_hdmi ${BINARIES_DIR}/signed_hdmi_imx8m.bin -loader ${BINARIES_DIR}/u-boot-spl-ddr.bin 0x7E1000 -second_loader ${BINARIES_DIR}/u-boot.itb 0x40200000 0x60000 -out ${BINARIES_DIR}/imx-boot-imx8mqevk-sd.bin
> +}

Shouldn't this logic be moved to a specialized post-image script ? And
then you do:

BR2_ROOTFS_POST_IMAGE_SCRIPT="board/freescale/common/imx/imx8-bootloader-prepare.sh board/freescale/common/imx/post-image.sh"

or something like that ? Fabio, what do you think ?

Also, could you split the i.MX8 stuff from the support of the i.MX8 EVK board itself ?

I.e adding the genimage.cfg file, and adding imx8-bootloader.prepare.sh
should be one patch, and then adding the i.MX8 EVK defconfig and
readme.txt should be another patch.

Could you rework the last two patches according to those comments ?

Thanks a lot!

Thomas Petazzoni
-- 
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com