1 files changed, 54 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap4-reboot-reason.c b/arch/arm/mach-omap2/omap4-reboot-reason.c
new file mode 100644
index 0000000..9c16bb7
--- /dev/null
+++ b/arch/arm/mach-omap2/omap4-reboot-reason.c
@@ -0,0 +1,54 @@
+/*
+ * Reboot reason special handler
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ *	Nishanth Menon
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/notifier.h>
+
+#include <mach/hardware.h>
+#include <mach/omap4-common.h>
+#include "omap4-sar-layout.h"
+
+static int omap_reboot_notifier_call(struct notifier_block *this,
+					unsigned long code, void *cmd)
+{
+	void __iomem *sar_base;
+	char *reason = "normal";
+
+	sar_base = omap4_get_sar_ram_base();
+
+	if (!sar_base)
+		return notifier_from_errno(-ENOMEM);
+
+	/* Save reboot mode in scratch memory */
+	if (code == SYS_RESTART && cmd != NULL && strlen(cmd))
+		reason = cmd;
+	else if (code == SYS_POWER_OFF)
+		reason = "off";
+
+	strncpy(sar_base + OMAP_REBOOT_REASON_OFFSET,
+			reason, OMAP_REBOOT_REASON_SIZE);
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block omap_reboot_notifier = {
+	.notifier_call = omap_reboot_notifier_call,
+};
+
+static int __init omap_reboot_reason_init(void)
+{
+	return register_reboot_notifier(&omap_reboot_notifier);
+}
+late_initcall(omap_reboot_reason_init);