61 lines
2.0 KiB
Plaintext
61 lines
2.0 KiB
Plaintext
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#!/bin/bash
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#
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# /usr/bin/ppp-uboot-flash
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# Utility that flashes selected U-Boot image to the boot device.
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#
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# Check that we're running as root
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if [[ ${EUID} != 0 ]]; then
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echo "Flashing U-Boot image not possible, please execute this utility as root."
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exit 1
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fi
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# Get the device that the root resides on, and remove "/dev/" from the device name
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ROOT_DEV=`findmnt / -o source -n | cut -d "[" -f 1 | cut -d "/" -f 3`
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# Get the full real name of the root device, which is usually "/dev/mmcblk0"
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ROOT_DEV_NAME="/dev/"`echo /sys/block/*/${ROOT_DEV} | cut -d "/" -f 4`
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# Verify that the determined root device is available, just in case
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if [[ ! -r ${ROOT_DEV_NAME} ]]; then
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echo "Flashing U-Boot not possible, device ${ROOT_DEV_NAME} not found. No changes made to U-Boot."
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exit 1
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fi
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# Get the U-Boot component names and check that they exist
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IDBLOADER_IMG="/boot/idbloader.img"
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U_BOOT_ITB="/boot/u-boot.itb"
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for COMPONENT in ${IDBLOADER_IMG} ${U_BOOT_ITB}; do
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if [[ ! -r ${COMPONENT} ]]; then
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echo "Flashing U-Boot not possible, file ${COMPONENT} not found. No changes made to U-Boot."
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exit 1
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fi
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done
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# Flash the first of the selected U-Boot components to the determined root device
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echo -n "Flashing U-Boot components..."
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dd if=${IDBLOADER_IMG} of=${ROOT_DEV_NAME} seek=64 conv=notrunc,fsync > /dev/null 2>&1
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STATUS_IMG=$?
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STATUS_ITB=0
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# Now flash the second U-Boot component, but only if the first one flashed successfully
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if [[ ${STATUS_IMG} = 0 ]]; then
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dd if=${U_BOOT_ITB} of=${ROOT_DEV_NAME} seek=16384 conv=notrunc,fsync > /dev/null 2>&1
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STATUS_ITB=$?
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fi
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# At the end, display the final status message of the U-Boot flashing
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if [[ ${STATUS_IMG} = 0 && ${STATUS_ITB} = 0 ]]; then
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echo " done."
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echo "Required U-Boot components flashed to ${ROOT_DEV_NAME} successfully."
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echo "Please reboot your phone for the changes to take effect."
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else
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echo " failed."
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echo "Flashing U-Boot components to ${ROOT_DEV_NAME} failed due to unknown reason."
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echo "Please try flashing the U-Boot again, or your phone may no longer boot properly."
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exit 1
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fi
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# EOF
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