ramips: split base-files into subtargets
While most of the target's contents are split into subtargets, the base-files are maintained for the target as a whole. However, OpenWrt already implements a mechanism that will use (and even prefer) files in the subtargets' directories. This can be exploited to make several scripts subtarget-specific and thus save some space. In certain cases, keeping files in parent (=target) base-files was more convenient, and thus no splitting was performed for those. Note that this will increase overall code lines, but reduce code per subtarget. base-files ipk size reduction: master (mt7621) 60958 B split (mt7620) 46358 B (- 14.3 kiB) split (mt7621) 48759 B (- 11.9 kiB) split (mt76x8) 44948 B (- 15.6 kiB) split (rt288x) 43508 B (- 17.0 kiB) split (rt305x) 45616 B (- 15.0 kiB) split (rt3883) 44176 B (- 16.4 kiB) Run-tested on: GL.iNet GL-MT300N-V2 (mt76x8) D-Link DWR-116 (mt7620) Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This commit is contained in:
Adrian Schmutzler
@@ -1,56 +0,0 @@
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#!/bin/sh
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# Netgear WNCE2001 has does a checksum check on boot and goes into recovery
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# tftp mode when the check fails. Initializing the JFFS2 partition triggers
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# this, so we make sure to zero checksum and size to be checksummed before
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# that happens, so this needs to run very early during boot.
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do_checksumming_disable() {
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. /lib/functions.sh
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local board=$(board_name)
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case "$board" in
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netgear,wnce2001)
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echo "Board is WNCE2001, updating checksum partition..."
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local zeroes=/dev/zero
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local tmpfile=/tmp/wnce2001_checksum
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local partname=checksum
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local mtd=$(find_mtd_part $partname)
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dd if=$mtd of=$tmpfile bs=80 count=1 2>/dev/null
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signature=$(dd if=$tmpfile bs=1 skip=24 count=20 2>/dev/null)
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checksum=$(dd if=$tmpfile bs=1 count=4 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"')
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if [ "$signature" != "RT3052-AP-WNCE2001-3" ]; then
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echo "Signature of checksum partition is wrong, bailing."
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return 0
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fi
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if [ "$checksum" != "00000000" ]; then
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echo "Checksum is set, zeroing."
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# zero out checksum
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dd if=$zeroes of=$tmpfile conv=notrunc bs=1 seek=0 count=4 2>/dev/null
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# zero out bytecount to be checksummed
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dd if=$zeroes of=$tmpfile conv=notrunc bs=1 seek=60 count=4 2>/dev/null
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mtd write $tmpfile $partname
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else
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echo "Checksum is already zero, nothing to do."
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fi
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;;
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asus,rt-n56u)
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echo "Board is ASUS RT-N56U, replacing uImage header..."
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local firmware_mtd=$(find_mtd_part firmware)
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local rootfs_mtd=$(find_mtd_part rootfs)
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local rootfs_data_mtd=$(find_mtd_part rootfs_data)
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local rootfs_len=$(grep \"rootfs\" /proc/mtd | awk -F' ' '{print "0x"$2}')
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local rootfs_data_len=$(grep \"rootfs_data\" /proc/mtd | awk -F' ' '{print "0x"$2}')
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local offset=$(echo "$rootfs_len $rootfs_data_len 0x40" | awk -F' ' '{printf "%i",$1-$2-$3}')
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local signature=$(dd if=$rootfs_mtd skip=$offset bs=1 count=4 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"')
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if [ "$signature" = "27051956" ]; then
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dd conv=notrunc if=$rootfs_mtd skip=$offset of=$firmware_mtd bs=1 count=64 2>/dev/null
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fi
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;;
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esac
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return 0
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}
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boot_hook_add preinit_main do_checksumming_disable
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@@ -1,54 +0,0 @@
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#
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# Copyright (C) 2010 OpenWrt.org
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#
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PART_NAME=firmware
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REQUIRE_IMAGE_METADATA=1
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platform_check_image() {
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return 0
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}
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platform_do_upgrade() {
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local board=$(board_name)
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case "$board" in
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mikrotik,rb750gr3|\
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mikrotik,rbm11g|\
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mikrotik,rbm33g)
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[ -z "$(rootfs_type)" ] && mtd erase firmware
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;;
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asus,rt-ac65p|\
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asus,rt-ac85p)
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echo "Backing up firmware"
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dd if=/dev/mtd4 bs=1024 count=4096 > /tmp/backup_firmware.bin
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dd if=/dev/mtd5 bs=1024 count=52224 >> /tmp/backup_firmware.bin
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mtd -e firmware2 write /tmp/backup_firmware.bin firmware2
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;;
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esac
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case "$board" in
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asus,rt-ac65p|\
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asus,rt-ac85p|\
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hiwifi,hc5962|\
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netgear,r6220|\
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netgear,r6260|\
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netgear,r6350|\
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netgear,r6850|\
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xiaomi,mir3g|\
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xiaomi,mir3p)
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nand_do_upgrade "$1"
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;;
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tplink,archer-c50-v4)
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MTD_ARGS="-t romfile"
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default_do_upgrade "$1"
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;;
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ubiquiti,edgerouterx|\
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ubiquiti,edgerouterx-sfp)
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platform_upgrade_ubnt_erx "$1"
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;;
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*)
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default_do_upgrade "$1"
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;;
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esac
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}
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@@ -1,78 +0,0 @@
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#
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# Copyright (C) 2015 OpenWrt.org
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#
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. /lib/functions.sh
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#Note: this code also uses some functions from nand.sh, but it is expected to be run by nand.sh, so we are not
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#sourcing it explicitly here
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UBNT_ERX_KERNEL_INDEX_OFFSET=160
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ubnt_get_target_kernel() {
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local factory_mtd=$1
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local current_kernel_index=$(hexdump -s $UBNT_ERX_KERNEL_INDEX_OFFSET -n 1 -e '/1 "%X "' ${factory_mtd})
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if [ $current_kernel_index == "0" ]; then
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echo 'kernel2'
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elif [ $current_kernel_index == "1" ]; then
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echo 'kernel1'
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fi
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}
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ubnt_update_target_kernel() {
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local factory_mtd=$1
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local kernel_part=$2
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local new_kernel_index
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if [ $kernel_part == "kernel1" ]; then
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new_kernel_index="\x00"
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elif [ $kernel_part == "kernel2" ]; then
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new_kernel_index="\x01"
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else
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echo 'Unknown kernel image index' >&2
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return 1
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fi
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if ! (echo -e $new_kernel_index | dd of=${factory_mtd} bs=1 count=1 seek=$UBNT_ERX_KERNEL_INDEX_OFFSET); then
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echo 'Failed to update kernel bootup index' >&2
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return 1
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fi
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}
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platform_upgrade_ubnt_erx() {
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local factory_mtd=$(find_mtd_part factory)
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if [ -z "$factory_mtd" ]; then
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echo "cannot find factory partition" >&2
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exit 1
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fi
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local kernel_part="$(ubnt_get_target_kernel ${factory_mtd})"
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if [ -z "$kernel_part" ]; then
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echo "cannot find factory partition" >&2
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exit 1
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fi
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# This is a global defined in nand.sh, sets partition kernel will be flashed into
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CI_KERNPART=${kernel_part}
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#Remove volume possibly left over from stock firmware
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local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
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if [ -z "$ubidev" ]; then
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local mtdnum="$( find_mtd_index "$CI_UBIPART" )"
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if [ -z "$mtdnum" ]; then
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echo "cannot find ubi mtd partition $CI_UBIPART" >&2
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exit 1
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fi
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ubiattach -m "$mtdnum"
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sync
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ubidev="$( nand_find_ubi "$CI_UBIPART" )"
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fi
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if [ -n "$ubidev" ]; then
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local troot_ubivol="$( nand_find_volume $ubidev troot )"
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[ -n "$troot_ubivol" ] && ubirmvol /dev/$ubidev -N troot || true
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fi
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ubnt_update_target_kernel ${factory_mtd} ${kernel_part} || exit 1
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nand_do_upgrade "$1"
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}
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