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 contact@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;