Closed mpvader closed 7 years ago
jhofstee
commented
7 years ago hello Matthijs,
Starting the watchdog is already done in u-boot. However linux disables it directly again. We can prevent that if we want https://github.com/victronenergy/linux/commit/b3f0c4a6f188a04609a2e561f031c85d07b73826. Assigning to @mansr.
Mans, any thought on this?
jhofstee
commented
7 years ago @mansr
lets back-port these: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/watchdog/omap_wdt.c?id=b2102eb36e7909c779e46f66595fda75aa219f4c https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/watchdog/omap_wdt.c?id=8605fec1ce2a397f738f1c394be7847dacf31b0c
It boils down to same thing, but there is a bootparam to control behavior so we can make sure it is only enabled when booting from onboard mmc and not when updating etc.
jhofstee
commented
7 years ago included in v2.01~10. You need to opt-in for keeping the watchdog alive during boot, see https://github.com/victronenergy/meta-victronenergy/commit/69f38b3beeb6ba98bbe688dc49a627c45b5d1fc4
right now (I assume that) the bootloader is only started from userland. And therefore not protecting against hangs while starting Linux.
This same issue exists for the ccgx: #74
Some links: