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ar71xx: mikrotik: erase firmware partition on SPI NOR devices in pre_upgrade()

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On Mikrotik SPI NOR devices, the firmware partition must be erased when flashing
from stock firmware, otherwise leftover bits (in particular a kernel signature)
can trigger a boot loop.

When booted from initramfs (the only way to flash LEDE on these devices),
this patch unconditionally erases the firmware partition in the pre_upgrade()
stage for all supported SPI NOR devices.

Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
This commit is contained in:
Thibaut VARENE 2017-02-23 12:24:05 +01:00 committed by Felix Fietkau
parent df36b5e1b3
commit ed49d08762
1 changed files with 8 additions and 0 deletions
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8
target/linux/ar71xx/base-files/lib/upgrade/platform.sh
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@ -684,6 +684,14 @@ platform_pre_upgrade() {
wndr4300)
nand_do_upgrade "$1"
;;
rb-750-r2|\
rb-750up-r2|\
rb-941-2nd|\
rb-951ui-2nd|\
rb-mapl-2nd)
# erase firmware if booted from initramfs
[ -z "$(rootfs_type)" ] && mtd erase firmware
;;
mr18|\
z1)
merakinand_do_upgrade "$1"