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, 190 insertions, 0 deletions

diff --git a/kernel/arch/powerpc/boot/cuboot-c2k.c b/kernel/arch/powerpc/boot/cuboot-c2k.c
new file mode 100644
index 000000000..e43594950
--- /dev/null
+++ b/kernel/arch/powerpc/boot/cuboot-c2k.c
@@ -0,0 +1,190 @@
+/*
+ * GEFanuc C2K platform code.
+ *
+ * Author: Remi Machet <rmachet@slac.stanford.edu>
+ *
+ * Originated from prpmc2800.c
+ *
+ * 2008 (c) Stanford University
+ * 2007 (c) MontaVista, Software, 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 "types.h"
+#include "stdio.h"
+#include "io.h"
+#include "ops.h"
+#include "elf.h"
+#include "gunzip_util.h"
+#include "mv64x60.h"
+#include "cuboot.h"
+#include "ppcboot.h"
+
+static u8 *bridge_base;
+
+static void c2k_bridge_setup(u32 mem_size)
+{
+	u32 i, v[30], enables, acc_bits;
+	u32 pci_base_hi, pci_base_lo, size, buf[2];
+	unsigned long cpu_base;
+	int rc;
+	void *devp, *mv64x60_devp;
+	u8 *bridge_pbase, is_coherent;
+	struct mv64x60_cpu2pci_win *tbl;
+	int bus;
+
+	bridge_pbase = mv64x60_get_bridge_pbase();
+	is_coherent = mv64x60_is_coherent();
+
+	if (is_coherent)
+		acc_bits = MV64x60_PCI_ACC_CNTL_SNOOP_WB
+			| MV64x60_PCI_ACC_CNTL_SWAP_NONE
+			| MV64x60_PCI_ACC_CNTL_MBURST_32_BYTES
+			| MV64x60_PCI_ACC_CNTL_RDSIZE_32_BYTES;
+	else
+		acc_bits = MV64x60_PCI_ACC_CNTL_SNOOP_NONE
+			| MV64x60_PCI_ACC_CNTL_SWAP_NONE
+			| MV64x60_PCI_ACC_CNTL_MBURST_128_BYTES
+			| MV64x60_PCI_ACC_CNTL_RDSIZE_256_BYTES;
+
+	mv64x60_config_ctlr_windows(bridge_base, bridge_pbase, is_coherent);
+	mv64x60_devp = find_node_by_compatible(NULL, "marvell,mv64360");
+	if (mv64x60_devp == NULL)
+		fatal("Error: Missing marvell,mv64360 device tree node\n\r");
+
+	enables = in_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE));
+	enables |= 0x007ffe00; /* Disable all cpu->pci windows */
+	out_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE), enables);
+
+	/* Get the cpu -> pci i/o & mem mappings from the device tree */
+	devp = NULL;
+	for (bus = 0; ; bus++) {
+		char name[] = "pci ";
+
+		name[strlen(name)-1] = bus+'0';
+
+		devp = find_node_by_alias(name);
+		if (devp == NULL)
+			break;
+
+		if (bus >= 2)
+			fatal("Error: Only 2 PCI controllers are supported at" \
+				" this time.\n");
+
+		mv64x60_config_pci_windows(bridge_base, bridge_pbase, bus, 0,
+				mem_size, acc_bits);
+
+		rc = getprop(devp, "ranges", v, sizeof(v));
+		if (rc == 0)
+			fatal("Error: Can't find marvell,mv64360-pci ranges"
+				" property\n\r");
+
+		/* Get the cpu -> pci i/o & mem mappings from the device tree */
+
+		for (i = 0; i < rc; i += 6) {
+			switch (v[i] & 0xff000000) {
+			case 0x01000000: /* PCI I/O Space */
+				tbl = mv64x60_cpu2pci_io;
+				break;
+			case 0x02000000: /* PCI MEM Space */
+				tbl = mv64x60_cpu2pci_mem;
+				break;
+			default:
+				continue;
+			}
+
+			pci_base_hi = v[i+1];
+			pci_base_lo = v[i+2];
+			cpu_base = v[i+3];
+			size = v[i+5];
+
+			buf[0] = cpu_base;
+			buf[1] = size;
+
+			if (!dt_xlate_addr(devp, buf, sizeof(buf), &cpu_base))
+				fatal("Error: Can't translate PCI address " \
+						"0x%x\n\r", (u32)cpu_base);
+
+			mv64x60_config_cpu2pci_window(bridge_base, bus,
+				pci_base_hi, pci_base_lo, cpu_base, size, tbl);
+		}
+
+		enables &= ~(3<<(9+bus*5)); /* Enable cpu->pci<bus> i/o,
+						cpu->pci<bus> mem0 */
+		out_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE),
+			enables);
+	};
+}
+
+static void c2k_fixups(void)
+{
+	u32 mem_size;
+
+	mem_size = mv64x60_get_mem_size(bridge_base);
+	c2k_bridge_setup(mem_size); /* Do necessary bridge setup */
+}
+
+#define MV64x60_MPP_CNTL_0	0xf000
+#define MV64x60_MPP_CNTL_2	0xf008
+#define MV64x60_GPP_IO_CNTL	0xf100
+#define MV64x60_GPP_LEVEL_CNTL	0xf110
+#define MV64x60_GPP_VALUE_SET	0xf118
+
+static void c2k_reset(void)
+{
+	u32 temp;
+
+	udelay(5000000);
+
+	if (bridge_base != 0) {
+		temp = in_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_0));
+		temp &= 0xFFFF0FFF;
+		out_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_0), temp);
+
+		temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL));
+		temp |= 0x00000004;
+		out_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL), temp);
+
+		temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL));
+		temp |= 0x00000004;
+		out_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL), temp);
+
+		temp = in_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_2));
+		temp &= 0xFFFF0FFF;
+		out_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_2), temp);
+
+		temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL));
+		temp |= 0x00080000;
+		out_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL), temp);
+
+		temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL));
+		temp |= 0x00080000;
+		out_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL), temp);
+
+		out_le32((u32 *)(bridge_base + MV64x60_GPP_VALUE_SET),
+				0x00080004);
+	}
+
+	for (;;);
+}
+
+static bd_t bd;
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+			unsigned long r6, unsigned long r7)
+{
+	CUBOOT_INIT();
+
+	fdt_init(_dtb_start);
+
+	bridge_base = mv64x60_get_bridge_base();
+
+	platform_ops.fixups = c2k_fixups;
+	platform_ops.exit = c2k_reset;
+
+	if (serial_console_init() < 0)
+		exit();
+}