From 6a7d2c625656df5f8ad6e33aa3d164eefb1df8dc Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Tue, 27 Aug 2013 21:15:02 +0100 Subject: ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Uwe Kleine-König Signed-off-by: Russell King --- arch/arm/kernel/v7m.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 arch/arm/kernel/v7m.c (limited to 'arch/arm/kernel/v7m.c') 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 +#include +#include +#include + +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(); +} -- cgit v1.2.3