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procd: more nand takeover fixes

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if the initramfs kernel and payload were flashed in one block, the payload might not be at the start of the ubi partition due to bad blocks inside the kernel partition.

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43513 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
John Crispin 2014-12-03 20:22:37 +00:00
parent 41c3bf1931
commit 05ebabab10
1 changed files with 12 additions and 8 deletions
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20
package/system/procd/files/nand-preinit.sh
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@ -4,14 +4,18 @@
nand_takeover() {
. /lib/upgrade/nand.sh
mtd=$(find_mtd_index "$CI_UBIPART")
local file_type="$(identify $2)"
mtd -l 400 dump /dev/mtd$mtd > /tmp/takeover.hdr
MAGIC=$(dd if=/tmp/takeover.hdr bs=1 skip=261 count=5 2> /dev/null)
SIZE=$(printf "%d" 0x$(dd if=/tmp/takeover.hdr bs=4 count=1 2> /dev/null | hexdump -v -n 4 -e '1/1 "%02x"'))
[ "$MAGIC" = "ustar" ] && {
mtd -l $((SIZE + 4)) dump /dev/mtd$mtd | dd bs=1 skip=4 of=/tmp/sysupgrade.tar
nand_do_upgrade_stage2 /tmp/sysupgrade.tar
}
esize=$(cat /proc/mtd | grep mtd$mtd |cut -d" " -f 3)
[ -z "$esize" ] && return 1
esize=$(printf "%d" 0x$esize)
for a in `seq 0 64`; do
mtd -o $((a * esize)) -l 400 dump /dev/mtd$mtd > /tmp/takeover.hdr
MAGIC=$(dd if=/tmp/takeover.hdr bs=1 skip=261 count=5 2> /dev/null)
SIZE=$(printf "%d" 0x$(dd if=/tmp/takeover.hdr bs=4 count=1 2> /dev/null | hexdump -v -n 4 -e '1/1 "%02x"'))
[ "$MAGIC" = "ustar" ] && {
mtd -o $((a * esize)) -l $((SIZE + 4)) dump /dev/mtd$mtd | dd bs=1 skip=4 of=/tmp/sysupgrade.tar
nand_do_upgrade_stage2 /tmp/sysupgrade.tar
}
done
}
boot_hook_add initramfs nand_takeover