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Adrian Schmutzler
19724e28c8
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>
33 lines
1.2 KiB
Bash
33 lines
1.2 KiB
Bash
#!/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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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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