86 lines
2.6 KiB
Plaintext
86 lines
2.6 KiB
Plaintext
#
|
|
# U-Boot bootscript for EMMC/SD images created by Yocto.
|
|
#
|
|
|
|
# As the first step in the boot script, check if we are using DualBoot and
|
|
# if an upgrade is available. 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 update verification
|
|
if test "${dualboot}" = "yes"; then
|
|
if test "${upgrade_available}" = "1"; then
|
|
echo "Update detected; Booting new system in ${active_system} (try ${bootcount})"
|
|
else
|
|
if test "${active_system}" = "linux_a"; then
|
|
echo "Booting from system A"
|
|
part number mmc ${mmcbootdev} linux_a pi
|
|
setenv mmcpart ${pi}
|
|
# Save the partition index on variable rootfs_a_index
|
|
part number mmc ${mmcbootdev} rootfs_a rootfs_a_index
|
|
# Save the rootfs_a UUID into mmcroot_a
|
|
part uuid mmc ${mmcbootdev}:${rootfs_a_index} mmcroot_a
|
|
setenv mmcroot PARTUUID=${mmcroot_a}
|
|
else
|
|
echo "Booting from system B"
|
|
part number mmc ${mmcbootdev} linux_b pi
|
|
setenv mmcpart ${pi}
|
|
# Save the partition index on variable rootfs_b_index
|
|
part number mmc ${mmcbootdev} rootfs_b rootfs_b_index
|
|
# Save the rootfs_b UUID into mmcroot_b
|
|
part uuid mmc ${mmcbootdev}:${rootfs_b_index} mmcroot_b
|
|
setenv mmcroot PARTUUID=${mmcroot_b}
|
|
fi
|
|
fi
|
|
else
|
|
# Get the UUID of the configured boot partition.
|
|
part uuid mmc ${mmcbootdev}:${mmcpart} bootpart
|
|
# Check the boot source.
|
|
if test "${bootpart}" = "${part1_uuid}"; then
|
|
# We are booting from the eMMC using 'linux'.
|
|
true
|
|
elif test "${bootpart}" = "${part2_uuid}"; then
|
|
# We are booting from the eMMC using 'recovery'.
|
|
setenv boot_initrd true
|
|
setenv initrd_file uramdisk-recovery.img
|
|
else
|
|
# We are booting from the SD card.
|
|
setenv mmcroot /dev/mmcblk${mmcbootdev}p2
|
|
fi
|
|
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 imx6qp-ccimx6qpsbc-id${board_id}.dtb
|
|
else
|
|
#
|
|
# Set device tree filename depending on the hardware variant
|
|
#
|
|
if test "${module_variant}" = "0x01"; then
|
|
setenv fdt_file imx6qp-ccimx6qpsbc-wb.dtb
|
|
elif test "${module_variant}" = "0x02"; then
|
|
setenv fdt_file imx6qp-ccimx6qpsbc-wb.dtb
|
|
elif test "${module_variant}" = "0x03"; then
|
|
setenv fdt_file imx6qp-ccimx6qpsbc.dtb
|
|
else
|
|
setenv fdt_file imx6qp-ccimx6qpsbc-wb.dtb
|
|
fi
|
|
fi
|
|
|
|
setenv extra_bootargs fbcon=logo-pos:center ${extra_bootargs}
|
|
dboot linux mmc ${mmcbootdev}:${mmcpart}
|
|
|
|
|
|
|
|
# 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
|