Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-omap2/ti81xx-restart.c b/kernel/arch/arm/mach-omap2/ti81xx-restart.c
new file mode 100644
index 000000000..6c3ce7c46
--- /dev/null
+++ b/kernel/arch/arm/mach-omap2/ti81xx-restart.c
@@ -0,0 +1,34 @@
+/*
+ * 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.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/reboot.h>
+
+#include "iomap.h"
+#include "common.h"
+#include "control.h"
+#include "prm3xxx.h"
+
+#define TI81XX_PRM_DEVICE_RSTCTRL	0x00a0
+#define TI81XX_GLOBAL_RST_COLD		BIT(1)
+
+/**
+ * ti81xx_restart - trigger a software restart of the SoC
+ * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
+ * @cmd: passed from the userspace program rebooting the system (if provided)
+ *
+ * Resets the SoC.  For @cmd, see the 'reboot' syscall in
+ * kernel/sys.c.  No return value.
+ *
+ * NOTE: Warm reset does not seem to work, may require resetting
+ * clocks to bypass mode.
+ */
+void ti81xx_restart(enum reboot_mode mode, const char *cmd)
+{
+	omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, 0,
+				   TI81XX_PRM_DEVICE_RSTCTRL);
+	while (1);
+}