The mkhootoofw.sh is a shell script, because official factory images
are shell scripts by themselves, and it made more sense to me to just
use a shell script on the build host to put the pieces for the
factory
image file together, rather than reimplement the wheel in C.
The hootoo_mtd_writer is a stripped-down and modified version of mtd
that includes support for flashing at an offset in the MTD. This is
needed for the HooToo, because the only usable partition for factory
flashing is the one labeled "ALL", and we don't want to flash the
u-boot, u-boot-env and factory partitions too...
The hootoo_mtd_writer binary has been compiled using the toolchain
contained in the GPL tarball provided by HooToo. (It seems to me from
some tests that this is the only way to get executables running on
the
stock kernel...)
In order to update the firmware from the web interface you need to
put a FAT-formatted pendrive in the router USB port, since the
original firmware needs this as temporary storage, because the RAM is
quite bloated. Then you upload the OpenWrt factory image generated by
mkhootoofw.sh, and the script kills unneeded services and partitions
to free up RAM, backs up the original firmware on the pendrive,
extracts the hootoo_mtd_writer and the sysupgrade image, flashes the
sysupgrade image and then reboots.
I've tested the resulting image on the factory firmware, and it
successfully installed OpenWrt on my HT-TM02.
Signed-off-by: Vittorio Gambaletta <open...@vittgam.net>
--- a/target/linux/ramips/image/Makefile
+++ b/target/linux/ramips/image/Makefile
@@ -317,6 +317,15 @@
fi
endef
+# Build HooToo factory images
+define BuildFirmware/HooToo8M/squashfs
+ $(call BuildFirmware/Default8M/$(1),$(1),$(2),$(3))
+ [ -e "$(call sysupname,$(1),$(2))" ] && \
+ $(SCRIPT_DIR)/download.pl "$(DL_DIR)" "hootoo_mtd_writer"
"3d72349cbb1d8e96086a084a6940304d"
"https://github.com/VittGam/hootoo_mtd_writer/releases/download/1.0/";
&& \
+ mkhootoofw.sh "$(DL_DIR)/hootoo_mtd_writer" "$(call
sysupname,$(1),$(2))" "$(call imgname,$(1),$(2))-factory.bin"
+endef
+BuildFirmware/HooToo8M/initramfs=$(call
BuildFirmware/OF/initramfs,$(1),$(2),$(3))
+
#
# RT288X Profiles
#
@@ -480,7 +489,7 @@
endef
Image/Build/Profile/HLKRM04=$(call
BuildFirmware/HLKRM04/$(1),$(1),hlk-rm04,HLKRM04,HLK-RM02)
-Image/Build/Profile/HT-TM02=$(call
BuildFirmware/Default8M/$(1),$(1),ht-tm02,HT-TM02)
+Image/Build/Profile/HT-TM02=$(call
BuildFirmware/HooToo8M/$(1),$(1),ht-tm02,HT-TM02)
Image/Build/Profile/M3=$(call BuildFirmware/Poray4M/$(1),$(1),m3,M3)
--- a/tools/firmware-utils/Makefile
+++ b/tools/firmware-utils/Makefile
@@ -76,6 +76,7 @@
define Host/Install
$(INSTALL_BIN) $(HOST_BUILD_DIR)/bin/* $(STAGING_DIR_HOST)/bin/
+ $(INSTALL_BIN) src/mkhootoofw.sh $(STAGING_DIR_HOST)/bin/
endef
$(eval $(call HostBuild))
--- /dev/null
+++ b/tools/firmware-utils/src/mkhootoofw.sh
@@ -0,0 +1,88 @@
+#!/bin/sh
+#
+# HooToo Factory Firmware Generator for OpenWrt
+# Copyright (C) 2014 Vittorio Gambaletta <open...@vittgam.net>
+#
+# This is free software, licensed under the GNU General Public
License v2.
+# See /LICENSE for more information.
+#
+# Sources for the hootoo_mtd_writer utility, which must be compiled
with the GPL
+# toolchain provided by HooToo for it to work on the factory kernel,
can be
+# found at: https://github.com/VittGam/hootoo_mtd_writer
+#
+# Usage: mkhootoofw.sh path-to-hootoo_mtd_writer
path-to-openwrt-sysupgrade.bin path-to-openwrt-factory.bin
+#
+
+# Write the shellscript stub
+cat > "${3}.tmp" <<'EOF'
+SKIP=57
+
+echo "Checking firmware checksum..."
+[ "$CRCSUM" != "`sed '1,3d' "$0" | cksum | sed -e 's/ /Z/' -e 's/
/Z/' | cut -dZ -f1`" ] && {
+ echo "Firmware checksum error!"
+ exit 1
+}
+echo "Firmware checksum OK"
+
+echo "Killing unneeded services..."
+killall -9 fileserv ioos upnpd led_control owndns ownhttp vstddns
udhcpc udhcpd udevd minidlna smbd nmbd
+sleep 1
+
+echo "Unmounting unneeded mounts..."
+umount /etc
+umount /boot/tmp
+umount /usr/local/samba/var
+umount /opt
+umount /var
+
+echo "Backing up original firmware..."
+BKPDIRBASE="/data/UsbDisk1/Volume1/OpenWrt-HooToo-Backup-`sed
's/:/-/g' < /sys/class/net/ra0/address`-"
+BKPDIRNUM=1
+BKPDIR="${BKPDIRBASE}${BKPDIRNUM}"
+while [ -e "$BKPDIR" ]; do
+ BKPDIRNUM=$((${BKPDIRNUM}+1))
+ BKPDIR="${BKPDIRBASE}${BKPDIRNUM}"
+done
+echo "Backup directory: ${BKPDIR}"
+
+mkdir "$BKPDIR"
+cp /dev/mtdblock* "${BKPDIR}/" || {
+ echo "Backup failed!"
+ exit 1
+}
+sync && echo 3 > /proc/sys/vm/drop_caches
+echo "Backup OK"
+
+echo "Extracting OpenWrt firmware..."
+tail -n +$SKIP "$0" | tar xv -C /tmp/ || {
+ echo "Extraction of firmware failed!"
+ exit 1
+}
+chmod +x /tmp/hootoo_mtd_writer
+sync && echo 3 > /proc/sys/vm/drop_caches
+
+echo "Writing OpenWrt firmware..."
+cd /tmp/
+/tmp/hootoo_mtd_writer /tmp/openwrt.bin ALL 327680 1
+
+echo "Upgrade not successful (reboot by hootoo_mtd_writer not
happened)..."
+exit 1
+END_OF_STUB
+EOF
+
+# Create and append tar archive containing hootoo_mtd_writer and
sysupgrade image to the factory image file
+mkdir "${3}-tmpdir"
+cp "$1" "${3}-tmpdir/hootoo_mtd_writer"
+cp "$2" "${3}-tmpdir/openwrt.bin"
+tar cv -C "${3}-tmpdir/" hootoo_mtd_writer openwrt.bin >> "${3}.tmp"
+rm -rf "${3}-tmpdir"
+
+# Generate the final factory image file along with the checksum
+echo '#!/bin/sh' > "$3"
+echo '# OpenWrt factory installation for HooToo HT-TM02' >> "$3"
+echo -n 'CRCSUM=' >> "$3"
+cksum < "${3}.tmp" | sed -e 's/ /Z/' -e 's/ /Z/' | cut -dZ -f1 >>
"$3"
+cat "${3}.tmp" >> "$3"
+rm "${3}.tmp"
+
+exit 0
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