imx8mm develop just update kernel/u-boot for sdcard booting

update_tar.sh

update_tar.sh
#!/bin/bash

origin="/home/kunyi/srgmx8mm"
mkdir -p ${origin}/rootfs
mkdir -p ${origin}/rootfs/boot

cd /home/kunyi/srgmx8mm/linux-srgmx8/
sudo -H cp ./arch/arm64/boot/Image.gz ${origin}/rootfs/boot -vf

if [ -f ./arch/arm64/boot/dts/freescale/srg-mx8mm.dtb ] ; then
sudo -H cp ./arch/arm64/boot/dts/freescale/srg-mx8mm.dtb ${origin}/rootfs/boot -vf
fi

if [ -f ./arch/arm64/boot/dts/freescale/imx8mm-bse.dtb ] ; then
sudo -H cp ./arch/arm64/boot/dts/freescale/imx8mm-bse.dtb ${origin}/rootfs/boot -vf
fi

if [ -f /home/kunyi/srgmx8mm/uboot-srgmx8/flash.bin ] ; then
sudo -H cp /home/kunyi/srgmx8mm/uboot-srgmx8/flash.bin ${origin}/rootfs/boot/bootloader -vf
fi

sudo -H make modules_install INSTALL_MOD_PATH=${origin}/rootfs
#
# sudo -H make headers_install INSTALL_HDR_PATH=${origin}/rootfs
# to check the below
# https://github.com/balena-os/module-headers
cd ${origin}
tar -cvpzf update.tar.gz ${origin}/rootfs

echo -e "restore tar -xvpzf update.tar.gz -C /"
echo -e "update bootloader"
echo -e "sudo dd if=/boot/bootloader of=/dev/mmcblk? bs=1K seek=33 conv=fsync status=progress"