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, 117 insertions, 0 deletions

diff --git a/kernel/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c b/kernel/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c
new file mode 100644
index 000000000..3d17fac29
--- /dev/null
+++ b/kernel/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c
@@ -0,0 +1,117 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file 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.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/*
+ * This module provides system/board/application information obtained
+ * by the bootloader.
+ */
+#include <linux/module.h>
+
+#include <asm/octeon/cvmx.h>
+#include <asm/octeon/cvmx-spinlock.h>
+#include <asm/octeon/cvmx-sysinfo.h>
+
+/**
+ * This structure defines the private state maintained by sysinfo module.
+ *
+ */
+static struct {
+	struct cvmx_sysinfo sysinfo;	   /* system information */
+	cvmx_spinlock_t lock;	   /* mutex spinlock */
+
+} state = {
+	.lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
+};
+
+
+/*
+ * Global variables that define the min/max of the memory region set
+ * up for 32 bit userspace access.
+ */
+uint64_t linux_mem32_min;
+uint64_t linux_mem32_max;
+uint64_t linux_mem32_wired;
+uint64_t linux_mem32_offset;
+
+/**
+ * This function returns the application information as obtained
+ * by the bootloader.  This provides the core mask of the cores
+ * running the same application image, as well as the physical
+ * memory regions available to the core.
+ *
+ * Returns  Pointer to the boot information structure
+ *
+ */
+struct cvmx_sysinfo *cvmx_sysinfo_get(void)
+{
+	return &(state.sysinfo);
+}
+EXPORT_SYMBOL(cvmx_sysinfo_get);
+
+/**
+ * This function is used in non-simple executive environments (such as
+ * Linux kernel, u-boot, etc.)	to configure the minimal fields that
+ * are required to use simple executive files directly.
+ *
+ * Locking (if required) must be handled outside of this
+ * function
+ *
+ * @phy_mem_desc_ptr:
+ *		     Pointer to global physical memory descriptor
+ *		     (bootmem descriptor) @board_type: Octeon board
+ *		     type enumeration
+ *
+ * @board_rev_major:
+ *		     Board major revision
+ * @board_rev_minor:
+ *		     Board minor revision
+ * @cpu_clock_hz:
+ *		     CPU clock freqency in hertz
+ *
+ * Returns 0: Failure
+ *	   1: success
+ */
+int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr,
+				    uint16_t board_type,
+				    uint8_t board_rev_major,
+				    uint8_t board_rev_minor,
+				    uint32_t cpu_clock_hz)
+{
+
+	/* The sysinfo structure was already initialized */
+	if (state.sysinfo.board_type)
+		return 0;
+
+	memset(&(state.sysinfo), 0x0, sizeof(state.sysinfo));
+	state.sysinfo.phy_mem_desc_ptr = phy_mem_desc_ptr;
+	state.sysinfo.board_type = board_type;
+	state.sysinfo.board_rev_major = board_rev_major;
+	state.sysinfo.board_rev_minor = board_rev_minor;
+	state.sysinfo.cpu_clock_hz = cpu_clock_hz;
+
+	return 1;
+}