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7a62e909b2
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>
(backported from commit bc173ddd83)
20 lines
346 B
Bash
Executable File
20 lines
346 B
Bash
Executable File
#!/bin/sh /etc/rc.common
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START=99
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start() {
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. /lib/functions.sh
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case $(board_name) in
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alfa-network,ac1200rm|\
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alfa-network,awusfree1|\
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alfa-network,tube-e4g)
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[ -n "$(fw_printenv bootcount bootchanged 2>/dev/null)" ] &&\
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echo -e "bootcount\nbootchanged\n" | /usr/sbin/fw_setenv -s -
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;;
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sk-wb8)
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fw_setenv bootcount 0
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;;
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esac
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}
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