438dcbfe74
Depending on busybox applet selection, paths of basic utiilties may differ, and may not work as symlinks to busybox. Simply using whatever binary is found in PATH and detecting symlinks automatically is more robust and easier to maintain. The list of binaries is also slightly cleaned up and duplicates are removed. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
339 lines
8.5 KiB
Bash
339 lines
8.5 KiB
Bash
RAMFS_COPY_BIN='osafeloader oseama'
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PART_NAME=firmware
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# $(1): file to read magic from
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# $(2): offset in bytes
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get_magic_long_at() {
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dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%02x"'
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}
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platform_machine() {
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cat /proc/device-tree/compatible | tr '\0' '\t' | cut -f 1
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}
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platform_flash_type() {
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# On NAND devices "rootfs" is UBI volume, so won't be find in /proc/mtd
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grep -q "\"rootfs\"" /proc/mtd && {
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echo "serial"
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return
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}
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echo "nand"
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}
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platform_expected_image() {
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local machine=$(platform_machine)
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case "$machine" in
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"dlink,dir-885l") echo "seama wrgac42_dlink.2015_dir885l"; return;;
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"netgear,r6250v1") echo "chk U12H245T00_NETGEAR"; return;;
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"netgear,r6300v2") echo "chk U12H240T00_NETGEAR"; return;;
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"netgear,r7000") echo "chk U12H270T00_NETGEAR"; return;;
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"netgear,r7900") echo "chk U12H315T30_NETGEAR"; return;;
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"netgear,r8000") echo "chk U12H315T00_NETGEAR"; return;;
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"netgear,r8500") echo "chk U12H334T00_NETGEAR"; return;;
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"tplink,archer-c9-v1") echo "safeloader"; return;;
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esac
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}
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platform_identify() {
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local magic
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magic=$(get_magic_long "$1")
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case "$magic" in
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"48445230")
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echo "trx"
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return
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;;
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"2a23245e")
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echo "chk"
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return
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;;
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"5ea3a417")
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echo "seama"
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return
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;;
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esac
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magic=$(get_magic_long_at "$1" 14)
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[ "$magic" = "55324e44" ] && {
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echo "cybertan"
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return
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}
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if osafeloader info "$1" > /dev/null 2>&1; then
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echo "safeloader"
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return
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fi
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echo "unknown"
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}
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platform_check_image() {
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[ "$#" -gt 1 ] && return 1
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local file_type=$(platform_identify "$1")
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local magic
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local error=0
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case "$file_type" in
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"chk")
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local header_len=$((0x$(get_magic_long_at "$1" 4)))
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local board_id_len=$(($header_len - 40))
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local board_id=$(dd if="$1" skip=40 bs=1 count=$board_id_len 2>/dev/null | hexdump -v -e '1/1 "%c"')
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local dev_board_id=$(platform_expected_image)
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echo "Found CHK image with device board_id $board_id"
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[ -n "$dev_board_id" -a "chk $board_id" != "$dev_board_id" ] && {
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echo "Firmware board_id doesn't match device board_id ($dev_board_id)"
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error=1
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}
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if ! otrx check "$1" -o "$header_len"; then
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echo "No valid TRX firmware in the CHK image"
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error=1
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fi
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;;
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"cybertan")
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local pattern=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
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local dev_pattern=$(platform_expected_image)
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echo "Found CyberTAN image with device pattern: $pattern"
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[ -n "$dev_pattern" -a "cybertan $pattern" != "$dev_pattern" ] && {
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echo "Firmware pattern doesn't match device pattern ($dev_pattern)"
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error=1
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}
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if ! otrx check "$1" -o 32; then
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echo "No valid TRX firmware in the CyberTAN image"
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error=1
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fi
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;;
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"safeloader")
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;;
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"seama")
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local img_signature=$(oseama info "$1" | grep "Meta entry:.*signature=" | sed "s/.*=//")
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local dev_signature=$(platform_expected_image)
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echo "Found Seama image with device signature: $img_signature"
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[ -n "$dev_signature" -a "seama $img_signature" != "$dev_signature" ] && {
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echo "Firmware signature doesn't match device signature ($dev_signature)"
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error=1
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}
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$(oseama info "$1" -e 0 | grep -q "Meta entry:.*type=firmware") || {
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echo "Seama container doesn't have firmware entity"
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error=1
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}
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;;
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"trx")
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local expected=$(platform_expected_image)
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[ "$expected" == "safeloader" ] && {
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echo "This device expects SafeLoader format and may not work with TRX"
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error=1
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}
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if ! otrx check "$1"; then
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echo "Invalid (corrupted?) TRX firmware"
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error=1
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fi
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;;
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*)
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echo "Invalid image type. Please use only .trx files"
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error=1
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;;
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esac
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return $error
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}
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# $(1): image for upgrade (with possible extra header)
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# $(2): offset of trx in image
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platform_pre_upgrade_trx() {
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local dir="/tmp/sysupgrade-bcm53xx"
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local trx="$1"
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local offset="$2"
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# Extract partitions from trx
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rm -fR $dir
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mkdir -p $dir
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otrx extract "$trx" \
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${offset:+-o $offset} \
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-1 $dir/kernel \
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-2 $dir/root
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[ $? -ne 0 ] && {
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echo "Failed to extract TRX partitions."
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return
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}
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# Firmwares without UBI image should be flashed "normally"
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local root_type=$(identify $dir/root)
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[ "$root_type" != "ubi" ] && {
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echo "Provided firmware doesn't use UBI for rootfs."
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return
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}
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# Prepare TRX file with just a kernel that will replace current one
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local linux_length=$(grep "\"linux\"" /proc/mtd | sed "s/mtd[0-9]*:[ \t]*\([^ \t]*\).*/\1/")
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[ -z "$linux_length" ] && {
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echo "Unable to find \"linux\" partition size"
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exit 1
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}
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linux_length=$((0x$linux_length))
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local kernel_length=$(wc -c $dir/kernel | cut -d ' ' -f 1)
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[ $kernel_length -gt $linux_length ] && {
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echo "New kernel doesn't fit \"linux\" partition."
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return
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}
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rm -f /tmp/null.bin
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rm -f /tmp/kernel.trx
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touch /tmp/null.bin
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otrx create /tmp/kernel.trx \
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-f $dir/kernel -b $(($linux_length + 28)) \
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-f /tmp/null.bin
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[ $? -ne 0 ] && {
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echo "Failed to create simple TRX with new kernel."
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return
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}
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# Prepare UBI image (drop unwanted extra blocks)
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local ubi_length=0
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while [ "$(dd if=$dir/root skip=$ubi_length bs=1 count=4 2>/dev/null)" = "UBI#" ]; do
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ubi_length=$(($ubi_length + 131072))
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done
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dd if=$dir/root of=/tmp/root.ubi bs=131072 count=$((ubi_length / 131072)) 2>/dev/null
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[ $? -ne 0 ] && {
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echo "Failed to prepare new UBI image."
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return
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}
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# Flash
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mtd write /tmp/kernel.trx firmware
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nand_do_upgrade /tmp/root.ubi
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}
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platform_pre_upgrade_seama() {
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local dir="/tmp/sysupgrade-bcm53xx"
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local seama="$1"
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local tmp
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# Extract Seama entity from Seama seal
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rm -fR $dir
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mkdir -p $dir
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oseama extract "$seama" \
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-e 0 \
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-o $dir/seama.entity
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[ $? -ne 0 ] && {
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echo "Failed to extract Seama entity."
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return
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}
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local entity_size=$(wc -c $dir/seama.entity | cut -d ' ' -f 1)
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local ubi_offset=0
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tmp=0
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while [ 1 ]; do
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[ $tmp -ge $entity_size ] && break
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[ "$(dd if=$dir/seama.entity skip=$tmp bs=1 count=4 2>/dev/null)" = "UBI#" ] && {
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ubi_offset=$tmp
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break
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}
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tmp=$(($tmp + 131072))
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done
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[ $ubi_offset -eq 0 ] && {
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echo "Failed to find UBI in Seama entity."
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return
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}
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local ubi_length=0
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while [ "$(dd if=$dir/seama.entity skip=$(($ubi_offset + $ubi_length)) bs=1 count=4 2>/dev/null)" = "UBI#" ]; do
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ubi_length=$(($ubi_length + 131072))
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done
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dd if=$dir/seama.entity of=$dir/kernel.seama bs=131072 count=$(($ubi_offset / 131072)) 2>/dev/null
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dd if=$dir/seama.entity of=$dir/root.ubi bs=131072 skip=$(($ubi_offset / 131072)) count=$(($ubi_length / 131072)) 2>/dev/null
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# Flash
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local kernel_size=$(sed -n 's/mtd[0-9]*: \([0-9a-f]*\).*"\(kernel\|linux\)".*/\1/p' /proc/mtd)
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mtd write $dir/kernel.seama firmware
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mtd ${kernel_size:+-c 0x$kernel_size} fixseama firmware
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nand_do_upgrade $dir/root.ubi
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}
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platform_pre_upgrade() {
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local file_type=$(platform_identify "$1")
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[ "$(platform_flash_type)" != "nand" ] && return
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# Find trx offset
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case "$file_type" in
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"chk") platform_pre_upgrade_trx "$1" $((0x$(get_magic_long_at "$1" 4)));;
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"cybertan") platform_pre_upgrade_trx "$1" 32;;
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"seama") platform_pre_upgrade_seama "$1";;
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"trx") platform_pre_upgrade_trx "$1";;
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esac
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}
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platform_trx_from_chk_cmd() {
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local header_len=$((0x$(get_magic_long_at "$1" 4)))
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echo -n dd bs=$header_len skip=1
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}
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platform_trx_from_cybertan_cmd() {
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echo -n dd bs=32 skip=1
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}
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platform_img_from_safeloader() {
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local dir="/tmp/sysupgrade-bcm53xx"
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# Extract partitions from SafeLoader
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rm -fR $dir
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mkdir -p $dir
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osafeloader extract "$1" \
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-p "os-image" \
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-o $dir/os-image
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osafeloader extract "$1" \
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-p "file-system" \
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-o $dir/file-system
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mtd write $dir/file-system rootfs
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echo -n $dir/os-image
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}
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platform_img_from_seama() {
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local dir="/tmp/sysupgrade-bcm53xx"
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local offset=$(oseama info "$1" -e 0 | grep "Entity offset:" | sed "s/.*:\s*//")
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local size=$(oseama info "$1" -e 0 | grep "Entity size:" | sed "s/.*:\s*//")
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# Busybox doesn't support required iflag-s
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# echo -n dd iflag=skip_bytes,count_bytes skip=$offset count=$size
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rm -fR $dir
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mkdir -p $dir
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dd if="$1" of=$dir/image-noheader.bin bs=$offset skip=1
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dd if=$dir/image-noheader.bin of=$dir/image-entity.bin bs=$size count=1
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echo -n $dir/image-entity.bin
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}
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platform_do_upgrade() {
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local file_type=$(platform_identify "$1")
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local trx="$1"
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local cmd=
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[ "$(platform_flash_type)" == "nand" ] && {
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echo "Writing whole image to NAND flash. All erase counters will be lost."
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}
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case "$file_type" in
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"chk") cmd=$(platform_trx_from_chk_cmd "$trx");;
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"cybertan") cmd=$(platform_trx_from_cybertan_cmd "$trx");;
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"safeloader") trx=$(platform_img_from_safeloader "$trx");;
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"seama") trx=$(platform_img_from_seama "$trx");;
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esac
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default_do_upgrade "$trx" "$cmd"
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}
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