forked from mirror/openwrt
bc173ddd83
New U-Boot version for MediaTek MT76x8/MT762x based ALFA Network boards
includes support for a 'dual image' feature. Users can enable it using
U-Boot environment variable 'dual_image' ('1' -> enabled).
When 'dual image' feature is enabled, U-Boot will modify DTB and divide
the original 'firmware' flash area into two, equal in size and aligned
to 64 KB partitions: 'firmware' and 'backup'. U-Boot will also adjust
size of 'firmware' area to match installed flash chip size.
U-Boot will load kernel from active partition which is marked with env
variable 'bootactive' ('1' -> first partition, '2' -> second partition)
and rename both partitions accordingly ('firmware' <-> 'backup').
There are 3 additional env variables used to control 'dual image' mode:
- bootlimit - maximum number of unsuccessful boot tries (default: '3')
- bootcount - current number of boot tries
- bootchanged - flag which informs that active partition was changed; if
it is set and 'bootcount' reaches 'bootlimit' value,
U-Boot will start web-based recovery which then updates
both partitions with provided image
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
39 lines
748 B
Bash
Executable file
39 lines
748 B
Bash
Executable file
#
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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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RAMFS_COPY_BIN='fw_printenv fw_setenv'
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RAMFS_COPY_DATA='/etc/fw_env.config /var/lock/fw_printenv.lock'
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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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alfa-network,awusfree1)
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[ "$(fw_printenv -n dual_image 2>/dev/null)" = "1" ] &&\
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[ -n "$(find_mtd_part backup)" ] && {
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PART_NAME=backup
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if [ "$(fw_printenv -n bootactive 2>/dev/null)" = "1" ]; then
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fw_setenv bootactive 2 || exit 1
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else
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fw_setenv bootactive 1 || exit 1
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fi
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}
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default_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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*)
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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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