mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 22:47:56 +00:00
45 lines
1.5 KiB
Bash
45 lines
1.5 KiB
Bash
|
# Copyright (C) 2018 OpenWrt.org
|
||
|
|
#
|
||
|
|
|
||
|
|
. /lib/functions.sh
|
||
|
|
|
||
|
|
# The mtd partition 'ubi' and 'rootfs_1' on NAND flash are os-image
|
||
|
|
# partitions. These partitions are called as "Bank1/Bank2" in U-Boot
|
||
|
|
# on WXR-2533DHP, and they are checked conditions when booting.
|
||
|
|
# Then, U-Boot checks kernel and rootfs volumes in ubi, but U-Boot
|
||
|
|
# needs "ubi_rootfs" as rootfs volume name. And, U-Boot checks the
|
||
|
|
# checksum at the end of rootfs (ubi_rootfs).
|
||
|
|
# When U-Boot writes os-image into the Bank, only kernel, rootfs
|
||
|
|
# (ubi_rootfs) and rootfs_data (ubi_rootfs_data) volumes are wrote
|
||
|
|
# into the Bank. (not full ubi image)
|
||
|
|
#
|
||
|
|
# == U-Boot Behaviors ==
|
||
|
|
# - Bank1/Bank2 images are good, images are different
|
||
|
|
# -> writes os-image to Bank1 from Bank2
|
||
|
|
# (this behavior is used to firmware upgrade in stock firmware)
|
||
|
|
# - Bank1 image is broken (or checksum error)
|
||
|
|
# -> writes os-image to Bank1 from Bank2
|
||
|
|
# - Bank2 image is broken (or checksum error)
|
||
|
|
# -> writes os-image to Bank2 from Bank1
|
||
|
|
# - Bank1/Bank2 images are broken (or checksum error)
|
||
|
|
# -> start tftp
|
||
|
|
|
||
|
|
buffalo_upgrade_prepare_ubi() {
|
||
|
|
local ubidev="$( nand_find_ubi ubi )"
|
||
|
|
local mtdnum2="$( find_mtd_index rootfs_1 )"
|
||
|
|
|
||
|
|
if [ ! "$mtdnum2" ]; then
|
||
|
|
echo "cannot find second ubi mtd partition rootfs_1"
|
||
|
|
return 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
local ubidev2="$( nand_find_ubi rootfs_1 )"
|
||
|
|
if [ ! "$ubidev2" ] && [ -n "$mtdnum2" ]; then
|
||
|
|
ubiattach -m "$mtdnum2"
|
||
|
|
ubidev2="$( nand_find_ubi rootfs_1 )"
|
||
|
|
fi
|
||
|
|
|
||
|
|
ubirmvol /dev/$ubidev -N ubi_rootfs_data &> /dev/null || true
|
||
|
|
ubirmvol /dev/$ubidev2 -N kernel &> /dev/null || true
|
||
|
|
}
|