From 12d8a729137ec58107236c472ddb14a819e7bd0b Mon Sep 17 00:00:00 2001 From: "rev13@wp.pl" Date: Sun, 1 Mar 2015 12:44:39 +0100 Subject: ARM: Add ARMv7-M support Signed-off-by: Kamil Lulko --- arch/arm/cpu/armv7m/cpu.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 arch/arm/cpu/armv7m/cpu.c (limited to 'arch/arm/cpu/armv7m/cpu.c') diff --git a/arch/arm/cpu/armv7m/cpu.c b/arch/arm/cpu/armv7m/cpu.c new file mode 100644 index 0000000000..d3ab862c55 --- /dev/null +++ b/arch/arm/cpu/armv7m/cpu.c @@ -0,0 +1,35 @@ +/* + * (C) Copyright 2010,2011 + * Vladimir Khusainov, Emcraft Systems, vlad@emcraft.com + * + * (C) Copyright 2015 + * Kamil Lulko, + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +/* + * This is called right before passing control to + * the Linux kernel point. + */ +int cleanup_before_linux(void) +{ + return 0; +} + +/* + * Perform the low-level reset. + */ +void reset_cpu(ulong addr) +{ + /* + * Perform reset but keep priority group unchanged. + */ + writel((V7M_AIRCR_VECTKEY << V7M_AIRCR_VECTKEY_SHIFT) + | (V7M_SCB->aircr & V7M_AIRCR_PRIGROUP_MSK) + | V7M_AIRCR_SYSRESET, &V7M_SCB->aircr); +} -- cgit v1.2.1