#
# U-Boot script for installing Linux images created by Yocto from the micro SD
# card into the NAND
#

echo "############################################################"
echo "#           Linux firmware install from micro SD           #"
echo "############################################################"
echo ""
echo " This process will erase your NAND and will install a new"
echo " U-Boot and Linux firmware images on the NAND."
echo ""
echo " Press CTRL+C now if you wish to abort or wait 10 seconds"
echo " to continue."

sleep 10
if test $? -eq 1; then
	echo "Aborted by user.";
	exit;
fi

setenv INSTALL_MMCDEV 0
setenv INSTALL_UBOOT_FILENAME u-boot-ccimx6ulsbc.imx
setenv INSTALL_LINUX_FILENAME dey-image-qt-##GRAPHICAL_BACKEND##-ccimx6ulsbc.boot.ubifs
setenv INSTALL_ROOTFS_FILENAME dey-image-qt-##GRAPHICAL_BACKEND##-ccimx6ulsbc.ubifs

# Check for presence of firmware files on the SD card
for install_f in ${INSTALL_UBOOT_FILENAME} ${INSTALL_LINUX_FILENAME} ${INSTALL_ROOTFS_FILENAME}; do
	if test ! -e mmc ${INSTALL_MMCDEV}:1 ${install_f}; then
		echo "ERROR: Could not find file ${install_f}";
		install_abort=1;
	fi;
done
if test -n "${install_abort}"; then
	echo "Aborted.";
	exit;
fi

# Skip user confirmation for U-Boot update
setenv forced_update 1

# Set bootdelay to zero so that firmware update is run immediately after
# the first reset.
setenv bootdelay 0

# Update U-Boot
echo ""
echo ""
echo ">> Installing U-Boot boot loader (target will reset)"
echo ""
echo ""
update uboot mmc ${INSTALL_MMCDEV} fat ${INSTALL_UBOOT_FILENAME}
if test $? -eq 1; then
	echo "[ERROR] Failed to update U-Boot boot loader!";
	echo "";
	echo "Aborted.";
	exit;
fi

# Set 'bootcmd' to the second part of the script that will
#  - Reset environment to defaults
#  - Save the environment
#  - Update the 'linux' partition
#  - Update the 'rootfs' partition
#  - Reset the system and let it boot
setenv bootcmd "
	env default -a;
	saveenv;
	echo \"\";
	echo \"\";
	echo \">> Installing Linux kernel and device tree files\";
	echo \"\";
	echo \"\";
	update linux mmc ${INSTALL_MMCDEV} fat ${INSTALL_LINUX_FILENAME};
	if test \$? -eq 1; then
		echo \"[ERROR] Failed to update linux partition!\";
		echo \"\";
		echo \"Aborted.\";
		exit;
	fi;
	echo \"\";
	echo \"\";
	echo \">> Installing Linux root file system\";
	echo \"\";
	echo \"\";
	update rootfs mmc ${INSTALL_MMCDEV} fat ${INSTALL_ROOTFS_FILENAME};
	if test \$? -eq 1; then
		echo \"[ERROR] Failed to update rootfs partition!\";
		echo \"\";
		echo \"Aborted.\";
		exit;
	fi;
	saveenv;
	echo \"\";
	echo \"#######################\";
	echo \"#  Install complete!  #\";
	echo \"#######################\";
	echo \"\";
	sleep 1;
	echo \">> Restarting the system\";
	sleep 1;
	reset;
"

saveenv
reset