linux/arch/arm/kernel/v7m.c
Uwe Kleine-König 6a7d2c6256 ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines
The newly introduced function is to be used as .restart callback for
ARMv7-M machines. The used register is architecturally defined, so it
should work for all M-class machines.

Acked-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-09-02 13:49:29 +01:00

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C

/*
* Copyright (C) 2013 Uwe Kleine-Koenig for Pengutronix
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2 as published by the
* Free Software Foundation.
*/
#include <linux/io.h>
#include <linux/reboot.h>
#include <asm/barrier.h>
#include <asm/v7m.h>
void armv7m_restart(enum reboot_mode mode, const char *cmd)
{
dsb();
__raw_writel(V7M_SCB_AIRCR_VECTKEY | V7M_SCB_AIRCR_SYSRESETREQ,
BASEADDR_V7M_SCB + V7M_SCB_AIRCR);
dsb();
}