From bc173ddd8381b03dde8cc2e6c66d0cd392c62bbd Mon Sep 17 00:00:00 2001 From: Piotr Dymacz Date: Tue, 29 Oct 2019 23:25:56 +0100 Subject: ramips: support dual image feature on ALFA Network boards 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 --- target/linux/ramips/mt7620/base-files/etc/init.d/bootcount | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100755 target/linux/ramips/mt7620/base-files/etc/init.d/bootcount (limited to 'target/linux/ramips/mt7620/base-files/etc/init.d') diff --git a/target/linux/ramips/mt7620/base-files/etc/init.d/bootcount b/target/linux/ramips/mt7620/base-files/etc/init.d/bootcount new file mode 100755 index 0000000000..c7b6919926 --- /dev/null +++ b/target/linux/ramips/mt7620/base-files/etc/init.d/bootcount @@ -0,0 +1,13 @@ +#!/bin/sh /etc/rc.common + +START=99 + +boot() { + case $(board_name) in + alfa-network,ac1200rm|\ + alfa-network,tube-e4g) + [ -n "$(fw_printenv bootcount bootchanged 2>/dev/null)" ] &&\ + echo -e "bootcount\nbootchanged\n" | /usr/sbin/fw_setenv -s - + ;; + esac +} -- cgit v1.2.3