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77 lines
2.1 KiB
Bash
77 lines
2.1 KiB
Bash
CI_BLKSZ=65536
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CI_LDADR=0x80041000
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platform_find_partitions() {
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local first dev size erasesize name
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while read dev size erasesize name; do
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name=${name#'"'}; name=${name%'"'}
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case "$name" in
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vmlinux.bin.l7|kernel|linux|rootfs)
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if [ -z "$first" ]; then
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first="$name"
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else
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echo "$erasesize:$first:$name"
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break
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fi
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;;
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esac
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done < /proc/mtd
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}
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platform_find_kernelpart() {
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local part
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for part in "${1%:*}" "${1#*:}"; do
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case "$part" in
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vmlinux.bin.l7|kernel|linux)
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echo "$part"
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break
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;;
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esac
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done
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}
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platform_check_image() {
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[ "$#" -gt 1 ] && return 1
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case "$(get_magic_word "$1")" in
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# Combined Image
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4349)
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local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null)
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local md5_chk=$(dd if="$1" bs=$CI_BLKSZ skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}"
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if [ -n "$md5_img" -a -n "$md5_chk" ] && [ "$md5_img" = "$md5_chk" ]; then
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return 0
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else
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echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)"
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return 1
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fi
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;;
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*)
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echo "Invalid image. Use combined .img files on this platform"
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return 1
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;;
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esac
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}
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platform_do_upgrade() {
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local partitions=$(platform_find_partitions)
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local kernelpart=$(platform_find_kernelpart "${partitions#*:}")
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local erase_size=$((0x${partitions%%:*})); partitions="${partitions#*:}"
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local kern_length=0x$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)
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local kern_blocks=$(($kern_length / $CI_BLKSZ))
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local root_blocks=$((0x$(dd if="$1" bs=2 skip=5 count=4 2>/dev/null) / $CI_BLKSZ))
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if [ -n "$partitions" ] && [ -n "$kernelpart" ] && \
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[ ${kern_blocks:-0} -gt 0 ] && \
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[ ${root_blocks:-0} -gt ${kern_blocks:-0} ] && \
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[ ${erase_size:-0} -gt 0 ];
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then
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local append=""
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[ -f "$UPGRADE_BACKUP" -a "$UPGRADE_OPT_SAVE_CONFIG" -eq 1 ] && append="-j $UPGRADE_BACKUP"
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( dd if="$1" bs=$CI_BLKSZ skip=1 count=$kern_blocks 2>/dev/null; \
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dd if="$1" bs=$CI_BLKSZ skip=$((1+$kern_blocks)) count=$root_blocks 2>/dev/null ) | \
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mtd -r $append -F$kernelpart:$kern_length:$CI_LDADR,rootfs write - $partitions
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fi
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}
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