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author | John Crispin <blogic@openwrt.org> | 2014-06-16 18:57:20 +0000 |
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committer | John Crispin <blogic@openwrt.org> | 2014-06-16 18:57:20 +0000 |
commit | bbb8942009badc1594ab187a36dac8877137c929 (patch) | |
tree | b7d9c6380f1a756a8a442318704ee99fe7ed86ae /target/linux/ramips/base-files/lib/preinit/04_handle_checksumming | |
parent | 81674531487a3127fe4faf44c01fc37b8e24361a (diff) | |
download | upstream-bbb8942009badc1594ab187a36dac8877137c929.tar.gz upstream-bbb8942009badc1594ab187a36dac8877137c929.tar.bz2 upstream-bbb8942009badc1594ab187a36dac8877137c929.zip |
ramips: RT-N56U support fixes and factory image creation
Signed-off-by: Mikko Hissa <mikko.hissa@werzek.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41224 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ramips/base-files/lib/preinit/04_handle_checksumming')
-rw-r--r-- | target/linux/ramips/base-files/lib/preinit/04_handle_checksumming | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/ramips/base-files/lib/preinit/04_handle_checksumming b/target/linux/ramips/base-files/lib/preinit/04_handle_checksumming new file mode 100644 index 0000000000..fd06d20c99 --- /dev/null +++ b/target/linux/ramips/base-files/lib/preinit/04_handle_checksumming @@ -0,0 +1,56 @@ +#!/bin/sh + +# Netgear WNCE2001 has does a checksum check on boot and goes into recovery +# tftp mode when the check fails. Initializing the JFFS2 partition triggers +# this, so we make sure to zero checksum and size to be checksummed before +# that happens, so this needs to run very early during boot. + +do_checksumming_disable() { + . /lib/ramips.sh + + local board=$(ramips_board_name) + + case "$board" in + wnce2001) + echo "Board is WNCE2001, updating checksum partition..." + local zeroes=/dev/zero + local tmpfile=/tmp/wnce2001_checksum + local partname=checksum + local mtd=$(find_mtd_part $partname) + dd if=$mtd of=$tmpfile bs=80 count=1 2>/dev/null + signature=$(dd if=$tmpfile bs=1 skip=24 count=20 2>/dev/null) + checksum=$(dd if=$tmpfile bs=1 count=4 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"') + if [ "$signature" != "RT3052-AP-WNCE2001-3" ]; then + echo "Signature of checksum partition is wrong, bailing." + return 0 + fi + if [ "$checksum" != "00000000" ]; then + echo "Checksum is set, zeroing." + # zero out checksum + dd if=$zeroes of=$tmpfile conv=notrunc bs=1 seek=0 count=4 2>/dev/null + # zero out bytecount to be checksummed + dd if=$zeroes of=$tmpfile conv=notrunc bs=1 seek=60 count=4 2>/dev/null + mtd write $tmpfile $partname + else + echo "Checksum is already zero, nothing to do." + fi + ;; + rt-n56u) + echo "Board is ASUS RT-N56U, replacing uImage header..." + local firmware_mtd=$(find_mtd_part firmware) + local rootfs_mtd=$(find_mtd_part rootfs) + local rootfs_data_mtd=$(find_mtd_part rootfs_data) + local rootfs_len=$(grep \"rootfs\" /proc/mtd | awk -F' ' '{print "0x"$2}') + local rootfs_data_len=$(grep \"rootfs_data\" /proc/mtd | awk -F' ' '{print "0x"$2}') + local offset=$(echo "$rootfs_len $rootfs_data_len 0x40" | awk -F' ' '{printf "%i",$1-$2-$3}') + local signature=$(dd if=$rootfs_mtd skip=$offset bs=1 count=4 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"') + if [ "$signature" == "27051956" ]; then + dd conv=notrunc if=$rootfs_mtd skip=$offset of=$firmware_mtd bs=1 count=64 2>/dev/null + fi + ;; + esac + + return 0 +} + +boot_hook_add preinit_main do_checksumming_disable |