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, 80 insertions, 0 deletions

diff --git a/kernel/arch/mips/sibyte/common/cfe_console.c b/kernel/arch/mips/sibyte/common/cfe_console.c
new file mode 100644
index 000000000..1ad2da103
--- /dev/null
+++ b/kernel/arch/mips/sibyte/common/cfe_console.c
@@ -0,0 +1,80 @@
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/console.h>
+
+#include <asm/sibyte/board.h>
+
+#include <asm/fw/cfe/cfe_api.h>
+#include <asm/fw/cfe/cfe_error.h>
+
+extern int cfe_cons_handle;
+
+static void cfe_console_write(struct console *cons, const char *str,
+		       unsigned int count)
+{
+	int i, last, written;
+
+	for (i=0, last=0; i<count; i++) {
+		if (!str[i])
+			/* XXXKW can/should this ever happen? */
+			return;
+		if (str[i] == '\n') {
+			do {
+				written = cfe_write(cfe_cons_handle, &str[last], i-last);
+				if (written < 0)
+					;
+				last += written;
+			} while (last < i);
+			while (cfe_write(cfe_cons_handle, "\r", 1) <= 0)
+				;
+		}
+	}
+	if (last != count) {
+		do {
+			written = cfe_write(cfe_cons_handle, &str[last], count-last);
+			if (written < 0)
+				;
+			last += written;
+		} while (last < count);
+	}
+
+}
+
+static int cfe_console_setup(struct console *cons, char *str)
+{
+	char consdev[32];
+	/* XXXKW think about interaction with 'console=' cmdline arg */
+	/* If none of the console options are configured, the build will break. */
+	if (cfe_getenv("BOOT_CONSOLE", consdev, 32) >= 0) {
+#ifdef CONFIG_SERIAL_SB1250_DUART
+		if (!strcmp(consdev, "uart0")) {
+			setleds("u0cn");
+		} else if (!strcmp(consdev, "uart1")) {
+			setleds("u1cn");
+		} else
+#endif
+#ifdef CONFIG_VGA_CONSOLE
+		       if (!strcmp(consdev, "pcconsole0")) {
+				setleds("pccn");
+		} else
+#endif
+			return -ENODEV;
+	}
+	return 0;
+}
+
+static struct console sb1250_cfe_cons = {
+	.name		= "cfe",
+	.write		= cfe_console_write,
+	.setup		= cfe_console_setup,
+	.flags		= CON_PRINTBUFFER,
+	.index		= -1,
+};
+
+static int __init sb1250_cfe_console_init(void)
+{
+	register_console(&sb1250_cfe_cons);
+	return 0;
+}
+
+console_initcall(sb1250_cfe_console_init);