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, 179 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-ixp4xx/gtwx5715-setup.c b/kernel/arch/arm/mach-ixp4xx/gtwx5715-setup.c
new file mode 100644
index 000000000..16a12994f
--- /dev/null
+++ b/kernel/arch/arm/mach-ixp4xx/gtwx5715-setup.c
@@ -0,0 +1,179 @@
+/*
+ * arch/arm/mach-ixp4xx/gtwx5715-setup.c
+ *
+ * Gemtek GTWX5715 (Linksys WRV54G) board setup
+ *
+ * Copyright (C) 2004 George T. Joseph
+ * Derived from Coyote
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/serial_8250.h>
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+
+/* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch
+   and operate as an SPI type interface.  The details of the interface
+   are available on Kendin/Micrel's web site. */
+
+#define GTWX5715_KSSPI_SELECT	5
+#define GTWX5715_KSSPI_TXD	6
+#define GTWX5715_KSSPI_CLOCK	7
+#define GTWX5715_KSSPI_RXD	12
+
+/* The "reset" button is wired to GPIO 3.
+   The GPIO is brought "low" when the button is pushed. */
+
+#define GTWX5715_BUTTON_GPIO	3
+
+/* Board Label      Front Label
+   LED1             Power
+   LED2             Wireless-G
+   LED3             not populated but could be
+   LED4             Internet
+   LED5 - LED8      Controlled by KS8995M Switch
+   LED9             DMZ */
+
+#define GTWX5715_LED1_GPIO	2
+#define GTWX5715_LED2_GPIO	9
+#define GTWX5715_LED3_GPIO	8
+#define GTWX5715_LED4_GPIO	1
+#define GTWX5715_LED9_GPIO	4
+
+/*
+ * Xscale UART registers are 32 bits wide with only the least
+ * significant 8 bits having any meaning.  From a configuration
+ * perspective, this means 2 things...
+ *
+ *   Setting .regshift = 2 so that the standard 16550 registers
+ *   line up on every 4th byte.
+ *
+ *   Shifting the register start virtual address +3 bytes when
+ *   compiled big-endian.  Since register writes are done on a
+ *   single byte basis, if the shift isn't done the driver will
+ *   write the value into the most significant byte of the register,
+ *   which is ignored, instead of the least significant.
+ */
+
+#ifdef	__ARMEB__
+#define	REG_OFFSET	3
+#else
+#define	REG_OFFSET	0
+#endif
+
+/*
+ * Only the second or "console" uart is connected on the gtwx5715.
+ */
+
+static struct resource gtwx5715_uart_resources[] = {
+	{
+		.start	= IXP4XX_UART2_BASE_PHYS,
+		.end	= IXP4XX_UART2_BASE_PHYS + 0x0fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= IRQ_IXP4XX_UART2,
+		.end	= IRQ_IXP4XX_UART2,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{ },
+};
+
+
+static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
+	{
+	.mapbase	= IXP4XX_UART2_BASE_PHYS,
+	.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
+	.irq		= IRQ_IXP4XX_UART2,
+	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+	.iotype		= UPIO_MEM,
+	.regshift	= 2,
+	.uartclk	= IXP4XX_UART_XTAL,
+	},
+	{ },
+};
+
+static struct platform_device gtwx5715_uart_device = {
+	.name		= "serial8250",
+	.id		= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= gtwx5715_uart_platform_data,
+	},
+	.num_resources	= 2,
+	.resource	= gtwx5715_uart_resources,
+};
+
+static struct flash_platform_data gtwx5715_flash_data = {
+	.map_name	= "cfi_probe",
+	.width		= 2,
+};
+
+static struct resource gtwx5715_flash_resource = {
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device gtwx5715_flash = {
+	.name		= "IXP4XX-Flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &gtwx5715_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &gtwx5715_flash_resource,
+};
+
+static struct platform_device *gtwx5715_devices[] __initdata = {
+	&gtwx5715_uart_device,
+	&gtwx5715_flash,
+};
+
+static void __init gtwx5715_init(void)
+{
+	ixp4xx_sys_init();
+
+	gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+	gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1;
+
+	platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
+}
+
+
+MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
+	/* Maintainer: George Joseph */
+	.map_io		= ixp4xx_map_io,
+	.init_early	= ixp4xx_init_early,
+	.init_irq	= ixp4xx_init_irq,
+	.init_time	= ixp4xx_timer_init,
+	.atag_offset	= 0x100,
+	.init_machine	= gtwx5715_init,
+#if defined(CONFIG_PCI)
+	.dma_zone_size	= SZ_64M,
+#endif
+	.restart	= ixp4xx_restart,
+MACHINE_END
+
+