diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2013-08-27 21:15:02 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-09-02 13:49:29 +0100 |
| commit | 6a7d2c625656df5f8ad6e33aa3d164eefb1df8dc (patch) | |
| tree | d3d43dccef6c32bd8fbbb70963d222f22f623760 /arch/arm/kernel/v7m.c | |
| parent | 84b6504f560157ff2077dd3757eee481b81dc39b (diff) | |
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>
Diffstat (limited to 'arch/arm/kernel/v7m.c')
| -rw-r--r-- | arch/arm/kernel/v7m.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/kernel/v7m.c b/arch/arm/kernel/v7m.c new file mode 100644 index 000000000000..4d2cba94f5cc --- /dev/null +++ b/arch/arm/kernel/v7m.c @@ -0,0 +1,19 @@ +/* + * 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(); +} |