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, 63 insertions, 0 deletions

diff --git a/kernel/arch/powerpc/boot/cuboot-52xx.c b/kernel/arch/powerpc/boot/cuboot-52xx.c
new file mode 100644
index 000000000..4c42ec868
--- /dev/null
+++ b/kernel/arch/powerpc/boot/cuboot-52xx.c
@@ -0,0 +1,63 @@
+/*
+ * Old U-boot compatibility for MPC5200
+ *
+ * Author: Grant Likely <grant.likely@secretlab.ca>
+ *
+ * Copyright (c) 2007 Secret Lab Technologies Ltd.
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * 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 "ops.h"
+#include "stdio.h"
+#include "io.h"
+#include "cuboot.h"
+
+#define TARGET_PPC_MPC52xx
+#include "ppcboot.h"
+
+static bd_t bd;
+
+static void platform_fixups(void)
+{
+	void *soc, *reg;
+	int div;
+	u32 sysfreq;
+
+
+	dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
+	dt_fixup_mac_addresses(bd.bi_enetaddr);
+	dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);
+
+	/* Unfortunately, the specific model number is encoded in the
+	 * soc node name in existing dts files -- once that is fixed,
+	 * this can do a simple path lookup.
+	 */
+	soc = find_node_by_devtype(NULL, "soc");
+	if (!soc)
+		soc = find_node_by_compatible(NULL, "fsl,mpc5200-immr");
+	if (!soc)
+		soc = find_node_by_compatible(NULL, "fsl,mpc5200b-immr");
+	if (soc) {
+		setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
+			sizeof(bd.bi_ipbfreq));
+
+		if (!dt_xlate_reg(soc, 0, (void*)&reg, NULL))
+			return;
+		div = in_8(reg + 0x204) & 0x0020 ? 8 : 4;
+		sysfreq = bd.bi_busfreq * div;
+		setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq));
+	}
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+                   unsigned long r6, unsigned long r7)
+{
+	CUBOOT_INIT();
+	fdt_init(_dtb_start);
+	serial_console_init();
+	platform_ops.fixups = platform_fixups;
+}