Hello John,
Am 25.01.2014 21:24, schrieb Mehaffey, John:
-----Original Message-----
From: linux-embedded-owner@xxxxxxxxxxxxxxx
[mailto:linux-embedded-owner@xxxxxxxxxxxxxxx] On Behalf Of Heiko
Schocher
Sent: Saturday, January 25, 2014 8:03 AM
To: linux-embedded@xxxxxxxxxxxxxxx
Cc: Wolfgang Denk; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Subject: GPIO triggers kernel reboot
Hello all,
is it possible to reboot current mainline kernel triggered from a GPIO in kernel space?
If not, how can be done this, so that it has a chance to go into mainline?
Thanks for any suggestions
bye,
Heiko
Hi Heiko,
Call kexec() from the GPIO driver.
It will take some effort to get it right :)
Thanks for your answer!
Hmm.. but has this a chance to go into mainline?
Or if a simple reboot is all that you want, examine the several reboot APIs in kernel/reboot.c
A current implementation from a customer is for an arm, am335x based board
to add in board setup code:
ret = request_irq(OMAP_GPIO_IRQ(RESET_BUTTON_IRQ_GPIO)
, (irq_handler_t)arm_pm_restart, IRQF_TRIGGER_LOW, "reset button", NULL);
and as I want to bring this board to mainline, I think this is not
an acceptable/good way ... or?
bye,
Heiko
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