#
# U-Boot bootscript for NAND images created by Yocto.
#

# As the first step in the boot script, check if we are using DualBoot. This
# requires the script to change some variables and save them, while the rest
# of the script changes variables only temporarily without saving them.

# Dual boot verification
if test "${dualboot}" = "yes"; then
	if test "${active_system}" = "linux_a"; then
		echo "Booting from system A (try ${bootcount})"
		setenv tmp_mtdrootfspart ${rootfsvol_a}
		setenv tmp_rootfsvol ${rootfsvol_a}
	else
		echo "Booting from system B (try ${bootcount})"
		setenv tmp_mtdrootfspart ${rootfsvol_b}
		setenv tmp_rootfsvol ${rootfsvol_b}
	fi
	if test "${mtdbootpart}" != "${active_system}"; then
		setenv mtdbootpart ${active_system}
		env_save_needed="1"
	fi
	if test "${mtdrootfspart}" != "${tmp_mtdrootfspart}"; then
		setenv mtdrootfspart ${tmp_mtdrootfspart}
		env_save_needed="1"
	fi
	if test "${rootfsvol}" != "${tmp_rootfsvol}"; then
		setenv rootfsvol ${tmp_rootfsvol}
		env_save_needed="1"
	fi
	if test "${env_save_needed}" = "1"; then
		env delete tmp_rootfsvol tmp_mtdrootfspart
		env save
	fi
else
	echo "Booting system (try ${bootcount})"
	if test "${mtdbootpart}" = "recovery"; then
		setenv boot_initrd true
		setenv initrd_file uramdisk-recovery.img
	else
		true
	fi
	setenv rootfsvol rootfs
fi


# Back up environment variables
setenv ORIG_extra_bootargs ${extra_bootargs}

#
# Set device tree filename depending on the board ID (if defined)
#
if test -n "${board_id}"; then
	setenv fdt_file imx6ul-ccimx6ulsbc-id${board_id}.dtb
else
	#
	# Set device tree filename depending on the hardware variant
	#
	if test "${module_variant}" = "0x02"; then
		setenv fdt_file imx6ul-ccimx6ulsbc-wb.dtb
	elif test "${module_variant}" = "0x03"; then
		setenv fdt_file imx6ul-ccimx6ulsbc.dtb
	elif test "${module_variant}" = "0x04"; then
		setenv fdt_file imx6ul-ccimx6ulsbc-wb.dtb
	elif test "${module_variant}" = "0x05"; then
		setenv fdt_file imx6ul-ccimx6ulsbc.dtb
	elif test "${module_variant}" = "0x06"; then
		setenv fdt_file imx6ul-ccimx6ulsbc-wb.dtb
	elif test "${module_variant}" = "0x07"; then
		setenv fdt_file imx6ul-ccimx6ulsbc-wb.dtb
	elif test "${module_variant}" = "0x08"; then
		setenv fdt_file imx6ul-ccimx6ulsbc-wb.dtb
	elif test "${module_variant}" = "0x09"; then
		setenv fdt_file imx6ul-ccimx6ulsbc-wb.dtb
	elif test "${module_variant}" = "0x0a"; then
		setenv fdt_file imx6ul-ccimx6ulsbc.dtb
	else
		setenv fdt_file imx6ul-ccimx6ulsbc-wb.dtb
	fi
fi

setenv extra_bootargs fbcon=logo-pos:center fbcon=logo-count:1 ${extra_bootargs}
dboot linux nand ${mtdbootpart}



# We only get here in case of an error on the dboot command.

# Undo changes to environment variables
setenv extra_bootargs ${ORIG_extra_bootargs}
setenv ORIG_extra_bootargs
