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, 56 insertions, 0 deletions

diff --git a/kernel/arch/sparc/prom/console_32.c b/kernel/arch/sparc/prom/console_32.c
new file mode 100644
index 000000000..1cfb50f4c
--- /dev/null
+++ b/kernel/arch/sparc/prom/console_32.c
@@ -0,0 +1,56 @@
+/*
+ * console.c: Routines that deal with sending and receiving IO
+ *            to/from the current console device using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Pete Zaitcev <zaitcev@yahoo.com>
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <linux/string.h>
+
+extern void restore_current(void);
+
+/* Non blocking put character to console device, returns -1 if
+ * unsuccessful.
+ */
+static int prom_nbputchar(const char *buf)
+{
+	unsigned long flags;
+	int i = -1;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+		if ((*(romvec->pv_nbputchar))(*buf))
+			i = 1;
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		if ((*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout,
+							  buf, 0x1) == 1)
+			i = 1;
+		break;
+	default:
+		break;
+	}
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return i; /* Ugh, we could spin forever on unsupported proms ;( */
+}
+
+void prom_console_write_buf(const char *buf, int len)
+{
+	while (len) {
+		int n = prom_nbputchar(buf);
+		if (n < 0)
+			continue;
+		len--;
+		buf++;
+	}
+}
+