From cb06f20d31cc8776aab0de950b89b77f50eef890 Mon Sep 17 00:00:00 2001 From: blogic Date: Tue, 9 Apr 2013 14:19:33 +0000 Subject: [ramips] Add Netgear WNCE2001 (OF version) Add Netgear WNCE2001. This is a small RT3052 device with 4MB spi flash and 32MB ram. 2 built-in antennas, 1x fastE, no USB, reset & wps switch. On my model the AP/RT switch is unpopulated, but I verified the gpio mapping for it. The stock firmware is running an unprotected tftpd which allows you to read any file from the filesystem. Serial port is present on testpads (See image on the wiki page). There are more testpads below the shield near the SoC, which may have JTAG. Slight annoyance: The bootloader is checksumming kernel&rootfs, but can be tricked by zeroing checksum and length fields in the checksum partition, see target/linux/ramips/base-files/lib/preinit/04_disable_wnce2001_flash_checksumming The manufacturer image is very similar to the DAP one, so I slightly modified mkdapimg to support generating it. The resulting openwrt-ramips-rt305x-wnce2001-squashfs-factory-(worldwide|northamerica).bin can be used to flash from stock to OpenWRT using the stock firmware upgrade function, without using the serial port. http://www.netgear.com/landing/wnce2001.aspx http://wiki.openwrt.org/toh/netgear/wnce2001 Signed-off-by: Tobias Diedrich git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36289 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../preinit/04_disable_wnce2001_flash_checksumming | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 target/linux/ramips/base-files/lib/preinit/04_disable_wnce2001_flash_checksumming (limited to 'target/linux/ramips/base-files/lib/preinit/04_disable_wnce2001_flash_checksumming') 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 -- cgit v1.2.3