From 11c2e505c4505a8c709cfa65675ba07aedec4e76 Mon Sep 17 00:00:00 2001
From: Eric Nelson <eric.nelson@boundarydevices.com>
Date: Sun, 15 Feb 2015 14:37:21 -0700
Subject: [PATCH] ARM: i.MX: provide access to reset cause through
get_imx_reset_cause()
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
---
arch/arm/imx-common/cpu.c | 10 +++++++++-
arch/arm/include/asm/arch-imx/cpu.h | 2 ++
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
index 28ccd29594e..067d08f131a 100644
--- a/arch/arm/imx-common/cpu.c
+++ b/arch/arm/imx-common/cpu.c
@@ -24,13 +24,16 @@
#include <fsl_esdhc.h>
#endif
-char *get_reset_cause(void)
+static u32 reset_cause = -1;
+
+static char *get_reset_cause(void)
{
u32 cause;
struct src *src_regs = (struct src *)SRC_BASE_ADDR;
cause = readl(&src_regs->srsr);
writel(cause, &src_regs->srsr);
+ reset_cause = cause;
switch (cause) {
case 0x00001:
@@ -53,6 +56,11 @@ char *get_reset_cause(void)
}
}
+u32 get_imx_reset_cause(void)
+{
+ return reset_cause;
+}
+
#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
#if defined(CONFIG_MX53)
#define MEMCTL_BASE ESDCTL_BASE_ADDR
diff --git a/arch/arm/include/asm/arch-imx/cpu.h b/arch/arm/include/asm/arch-imx/cpu.h
index 254136e2288..4715f4e8946 100644
--- a/arch/arm/include/asm/arch-imx/cpu.h
+++ b/arch/arm/include/asm/arch-imx/cpu.h
@@ -17,3 +17,5 @@
#define CS0_64M_CS1_64M 1
#define CS0_64M_CS1_32M_CS2_32M 2
#define CS0_32M_CS1_32M_CS2_32M_CS3_32M 3
+
+u32 get_imx_reset_cause(void);
--
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