Since the SAR registers are filled with garbage on cold reset, this checks for a
warm reset to assert the validity of reboot mode.
Signed-off-by: Paul Kocialkowski <cont...@paulk.fr>
---
arch/arm/cpu/armv7/omap4/boot.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/cpu/armv7/omap4/boot.c b/arch/arm/cpu/armv7/omap4/boot.c
index bae49f4..7f5791e 100644
--- a/arch/arm/cpu/armv7/omap4/boot.c
+++ b/arch/arm/cpu/armv7/omap4/boot.c
@@ -9,6 +9,7 @@
#include <common.h>
#include <asm/io.h>
#include <asm/omap_common.h>
+#include <asm/arch/sys_proto.h>
#include <spl.h>
static u32 boot_devices[] = {
@@ -67,6 +68,9 @@ int omap_reboot_mode(char *mode, unsigned int length)
if (length < 2)
return -1;
+ if (!warm_reset())
+ return -1;
+
limit = (length < OMAP_REBOOT_REASON_SIZE) ? length :
OMAP_REBOOT_REASON_SIZE;
--
2.6.4
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