[U-Boot] [PATCH 1/2] ARM: i.MX: provide access to reset cause through get_imx_reset_cause()

Eric Nelson
2015-02-15T21:37:21Z

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
---
This patch set replaces http://patchwork.ozlabs.org/patch/436492/.

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 28ccd29..067d08f 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 254136e..4715f4e 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);
--
1.9.1