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, 127 insertions, 0 deletions

diff --git a/kernel/arch/mips/fw/arc/tree.c b/kernel/arch/mips/fw/arc/tree.c
new file mode 100644
index 000000000..924a37dc2
--- /dev/null
+++ b/kernel/arch/mips/fw/arc/tree.c
@@ -0,0 +1,127 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * PROM component device tree code.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
+ * Copyright (C) 1999 Silicon Graphics, Inc.
+ */
+#include <linux/init.h>
+#include <asm/fw/arc/types.h>
+#include <asm/sgialib.h>
+
+#undef DEBUG_PROM_TREE
+
+pcomponent * __init
+ArcGetPeer(pcomponent *Current)
+{
+	if (Current == PROM_NULL_COMPONENT)
+		return PROM_NULL_COMPONENT;
+
+	return (pcomponent *) ARC_CALL1(next_component, Current);
+}
+
+pcomponent * __init
+ArcGetChild(pcomponent *Current)
+{
+	return (pcomponent *) ARC_CALL1(child_component, Current);
+}
+
+pcomponent * __init
+ArcGetParent(pcomponent *Current)
+{
+	if (Current == PROM_NULL_COMPONENT)
+		return PROM_NULL_COMPONENT;
+
+	return (pcomponent *) ARC_CALL1(parent_component, Current);
+}
+
+LONG __init
+ArcGetConfigurationData(VOID *Buffer, pcomponent *Current)
+{
+	return ARC_CALL2(component_data, Buffer, Current);
+}
+
+pcomponent * __init
+ArcAddChild(pcomponent *Current, pcomponent *Template, VOID *ConfigurationData)
+{
+	return (pcomponent *)
+	       ARC_CALL3(child_add, Current, Template, ConfigurationData);
+}
+
+LONG __init
+ArcDeleteComponent(pcomponent *ComponentToDelete)
+{
+	return ARC_CALL1(comp_del, ComponentToDelete);
+}
+
+pcomponent * __init
+ArcGetComponent(CHAR *Path)
+{
+	return (pcomponent *)ARC_CALL1(component_by_path, Path);
+}
+
+#ifdef DEBUG_PROM_TREE
+
+static char *classes[] = {
+	"system", "processor", "cache", "adapter", "controller", "peripheral",
+	"memory"
+};
+
+static char *types[] = {
+	"arc", "cpu", "fpu", "picache", "pdcache", "sicache", "sdcache",
+	"sccache", "memdev", "eisa adapter", "tc adapter", "scsi adapter",
+	"dti adapter", "multi-func adapter", "disk controller",
+	"tp controller", "cdrom controller", "worm controller",
+	"serial controller", "net controller", "display controller",
+	"parallel controller", "pointer controller", "keyboard controller",
+	"audio controller", "misc controller", "disk peripheral",
+	"floppy peripheral", "tp peripheral", "modem peripheral",
+	"monitor peripheral", "printer peripheral", "pointer peripheral",
+	"keyboard peripheral", "terminal peripheral", "line peripheral",
+	"net peripheral", "misc peripheral", "anonymous"
+};
+
+static char *iflags[] = {
+	"bogus", "read only", "removable", "console in", "console out",
+	"input", "output"
+};
+
+static void __init
+dump_component(pcomponent *p)
+{
+	printk("[%p]:class<%s>type<%s>flags<%s>ver<%d>rev<%d>",
+	       p, classes[p->class], types[p->type],
+	       iflags[p->iflags], p->vers, p->rev);
+	printk("key<%08lx>\n\tamask<%08lx>cdsize<%d>ilen<%d>iname<%s>\n",
+	       p->key, p->amask, (int)p->cdsize, (int)p->ilen, p->iname);
+}
+
+static void __init
+traverse(pcomponent *p, int op)
+{
+	dump_component(p);
+	if(ArcGetChild(p))
+		traverse(ArcGetChild(p), 1);
+	if(ArcGetPeer(p) && op)
+		traverse(ArcGetPeer(p), 1);
+}
+
+void __init
+prom_testtree(void)
+{
+	pcomponent *p;
+
+	p = ArcGetChild(PROM_NULL_COMPONENT);
+	dump_component(p);
+	p = ArcGetChild(p);
+	while(p) {
+		dump_component(p);
+		p = ArcGetPeer(p);
+	}
+}
+
+#endif /* DEBUG_PROM_TREE  */