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bcm53xx: properly support sysupgrade using Seama on NAND devices

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It updates kernel and then formats UBI without loosing erase counters.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
This commit is contained in:
Rafał Miłecki 2016-06-11 01:50:34 +02:00
parent 7e08f2ccbd
commit 776b24d9aa
1 changed files with 48 additions and 1 deletions
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49
target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
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@ -197,6 +197,53 @@ platform_pre_upgrade_trx() {
nand_do_upgrade /tmp/root.ubi
}
platform_pre_upgrade_seama() {
local dir="/tmp/sysupgrade-bcm53xx"
local seama="$1"
local tmp
# Extract Seama entity from Seama seal
rm -fR $dir
mkdir -p $dir
oseama extract "$seama" \
-e 0 \
-o $dir/seama.entity
[ $? -ne 0 ] && {
echo "Failed to extract Seama entity."
return
}
local entity_size=$(wc -c $dir/seama.entity | cut -d ' ' -f 1)
local ubi_offset=0
tmp=0
while [ 1 ]; do
[ $tmp -ge $entity_size ] && break
[ "$(dd if=$dir/seama.entity skip=$tmp bs=1 count=4 2>/dev/null)" = "UBI#" ] && {
ubi_offset=$tmp
break
}
tmp=$(($tmp + 131072))
done
[ $ubi_offset -eq 0 ] && {
echo "Failed to find UBI in Seama entity."
return
}
local ubi_length=0
while [ "$(dd if=$dir/seama.entity skip=$(($ubi_offset + $ubi_length)) bs=1 count=4 2>/dev/null)" = "UBI#" ]; do
ubi_length=$(($ubi_length + 131072))
done
dd if=$dir/seama.entity of=$dir/kernel.seama bs=131072 count=$(($ubi_offset / 131072)) 2>/dev/null
dd if=$dir/seama.entity of=$dir/root.ubi bs=131072 skip=$(($ubi_offset / 131072)) count=$(($ubi_length / 131072)) 2>/dev/null
# Flash
local kernel_size=$(sed -n 's/mtd[0-9]*: \([0-9a-f]*\).*"\(kernel\|linux\)".*/\1/p' /proc/mtd)
mtd write $dir/kernel.seama firmware
mtd ${kernel_size:+-c 0x$kernel_size} fixseama firmware
nand_do_upgrade $dir/root.ubi
}
platform_pre_upgrade() {
export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /usr/bin/oseama /bin/sed"
@ -208,7 +255,7 @@ platform_pre_upgrade() {
case "$file_type" in
"chk") platform_pre_upgrade_trx "$1" $((0x$(get_magic_long_at "$1" 4)));;
"cybertan") platform_pre_upgrade_trx "$1" 32;;
"seama") return;;
"seama") platform_pre_upgrade_seama "$1";;
"trx") platform_pre_upgrade_trx "$1";;
esac
}