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, 168 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-tegra/tegra.c b/kernel/arch/arm/mach-tegra/tegra.c
new file mode 100644
index 000000000..861d88486
--- /dev/null
+++ b/kernel/arch/arm/mach-tegra/tegra.c
@@ -0,0 +1,168 @@
+/*
+ * NVIDIA Tegra SoC device tree board support
+ *
+ * Copyright (C) 2011, 2013, NVIDIA Corporation
+ * Copyright (C) 2010 Secret Lab Technologies, Ltd.
+ * Copyright (C) 2010 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/clk/tegra.h>
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/irqchip.h>
+#include <linux/irqdomain.h>
+#include <linux/kernel.h>
+#include <linux/of_address.h>
+#include <linux/of_fdt.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/pda_power.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+#include <linux/usb/tegra_usb_phy.h>
+
+#include <soc/tegra/fuse.h>
+#include <soc/tegra/pmc.h>
+
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+#include <asm/setup.h>
+#include <asm/trusted_foundations.h>
+
+#include "board.h"
+#include "common.h"
+#include "cpuidle.h"
+#include "flowctrl.h"
+#include "iomap.h"
+#include "irq.h"
+#include "pm.h"
+#include "reset.h"
+#include "sleep.h"
+
+/*
+ * Storage for debug-macro.S's state.
+ *
+ * This must be in .data not .bss so that it gets initialized each time the
+ * kernel is loaded. The data is declared here rather than debug-macro.S so
+ * that multiple inclusions of debug-macro.S point at the same data.
+ */
+u32 tegra_uart_config[3] = {
+	/* Debug UART initialization required */
+	1,
+	/* Debug UART physical address */
+	0,
+	/* Debug UART virtual address */
+	0,
+};
+
+static void __init tegra_init_early(void)
+{
+	of_register_trusted_foundations();
+	tegra_cpu_reset_handler_init();
+	tegra_flowctrl_init();
+}
+
+static void __init tegra_dt_init_irq(void)
+{
+	tegra_init_irq();
+	irqchip_init();
+}
+
+static void __init tegra_dt_init(void)
+{
+	struct soc_device_attribute *soc_dev_attr;
+	struct soc_device *soc_dev;
+	struct device *parent = NULL;
+
+	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+	if (!soc_dev_attr)
+		goto out;
+
+	soc_dev_attr->family = kasprintf(GFP_KERNEL, "Tegra");
+	soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d",
+					   tegra_sku_info.revision);
+	soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%u", tegra_get_chip_id());
+
+	soc_dev = soc_device_register(soc_dev_attr);
+	if (IS_ERR(soc_dev)) {
+		kfree(soc_dev_attr->family);
+		kfree(soc_dev_attr->revision);
+		kfree(soc_dev_attr->soc_id);
+		kfree(soc_dev_attr);
+		goto out;
+	}
+
+	parent = soc_device_to_device(soc_dev);
+
+	/*
+	 * Finished with the static registrations now; fill in the missing
+	 * devices
+	 */
+out:
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, parent);
+}
+
+static void __init paz00_init(void)
+{
+	if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC))
+		tegra_paz00_wifikill_init();
+}
+
+static struct {
+	char *machine;
+	void (*init)(void);
+} board_init_funcs[] = {
+	{ "compal,paz00", paz00_init },
+};
+
+static void __init tegra_dt_init_late(void)
+{
+	int i;
+
+	tegra_init_suspend();
+	tegra_cpuidle_init();
+
+	for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) {
+		if (of_machine_is_compatible(board_init_funcs[i].machine)) {
+			board_init_funcs[i].init();
+			break;
+		}
+	}
+}
+
+static const char * const tegra_dt_board_compat[] = {
+	"nvidia,tegra124",
+	"nvidia,tegra114",
+	"nvidia,tegra30",
+	"nvidia,tegra20",
+	NULL
+};
+
+DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)")
+	.l2c_aux_val	= 0x3c400001,
+	.l2c_aux_mask	= 0xc20fc3fe,
+	.smp		= smp_ops(tegra_smp_ops),
+	.map_io		= tegra_map_common_io,
+	.init_early	= tegra_init_early,
+	.init_irq	= tegra_dt_init_irq,
+	.init_machine	= tegra_dt_init,
+	.init_late	= tegra_dt_init_late,
+	.restart	= tegra_pmc_restart,
+	.dt_compat	= tegra_dt_board_compat,
+MACHINE_END