diff options
Diffstat (limited to 'target/linux/ramips/base-files/lib/preinit/04_disable_wnce2001_flash_checksumming')
| -rw-r--r-- | target/linux/ramips/base-files/lib/preinit/04_disable_wnce2001_flash_checksumming | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/ramips/base-files/lib/preinit/04_disable_wnce2001_flash_checksumming b/target/linux/ramips/base-files/lib/preinit/04_disable_wnce2001_flash_checksumming new file mode 100644 index 000000000..67a1746f1 --- /dev/null +++ b/target/linux/ramips/base-files/lib/preinit/04_disable_wnce2001_flash_checksumming @@ -0,0 +1,43 @@ +#!/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_wnce2001_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 + ;; + esac + + return 0 +} + +boot_hook_add preinit_main do_wnce2001_checksumming_disable |