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, 269 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-pxa/pcm027.c b/kernel/arch/arm/mach-pxa/pcm027.c
new file mode 100644
index 000000000..69918c7e3
--- /dev/null
+++ b/kernel/arch/arm/mach-pxa/pcm027.c
@@ -0,0 +1,269 @@
+/*
+ *  linux/arch/arm/mach-pxa/pcm027.c
+ *  Support for the Phytec phyCORE-PXA270 CPU card (aka PCM-027).
+ *
+ *  Refer
+ *   http://www.phytec.com/products/sbc/ARM-XScale/phyCORE-XScale-PXA270.html
+ *  for additional hardware info
+ *
+ *  Author:	Juergen Kilb
+ *  Created:	April 05, 2005
+ *  Copyright:	Phytec Messtechnik GmbH
+ *  e-Mail:	armlinux@phytec.de
+ *
+ *  based on Intel Mainstone Board
+ *
+ *  Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
+ *
+ *  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 <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/max7301.h>
+#include <linux/spi/pxa2xx_spi.h>
+#include <linux/leds.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <mach/pxa27x.h>
+#include <mach/pcm027.h>
+#include "generic.h"
+
+/*
+ * ABSTRACT:
+ *
+ * The PXA270 processor comes with a bunch of hardware on its silicon.
+ * Not all of this hardware can be used at the same time and not all
+ * is routed to module's connectors. Also it depends on the baseboard, what
+ * kind of hardware can be used in which way.
+ * -> So this file supports the main devices on the CPU card only!
+ * Refer pcm990-baseboard.c how to extend this features to get a full
+ * blown system with many common interfaces.
+ *
+ * The PCM-027 supports the following interfaces through its connectors and
+ * will be used in pcm990-baseboard.c:
+ *
+ * - LCD support
+ * - MMC support
+ * - IDE/CF card
+ * - FFUART
+ * - BTUART
+ * - IRUART
+ * - AC97
+ * - SSP
+ * - SSP3
+ *
+ * Claimed GPIOs:
+ * GPIO0 -> IRQ input from RTC
+ * GPIO2 -> SYS_ENA*)
+ * GPIO3 -> PWR_SCL
+ * GPIO4 -> PWR_SDA
+ * GPIO5 -> PowerCap0*)
+ * GPIO6 -> PowerCap1*)
+ * GPIO7 -> PowerCap2*)
+ * GPIO8 -> PowerCap3*)
+ * GPIO15 -> /CS1
+ * GPIO20 -> /CS2
+ * GPIO21 -> /CS3
+ * GPIO33 -> /CS5 network controller select
+ * GPIO52 -> IRQ from network controller
+ * GPIO78 -> /CS2
+ * GPIO80 -> /CS4
+ * GPIO90 -> LED0
+ * GPIO91 -> LED1
+ * GPIO114 -> IRQ from CAN controller
+ * GPIO117 -> SCL
+ * GPIO118 -> SDA
+ *
+ * *) CPU internal use only
+ */
+
+static unsigned long pcm027_pin_config[] __initdata = {
+	/* Chip Selects */
+	GPIO20_nSDCS_2,
+	GPIO21_nSDCS_3,
+	GPIO15_nCS_1,
+	GPIO78_nCS_2,
+	GPIO80_nCS_4,
+	GPIO33_nCS_5,	/* Ethernet */
+
+	/* I2C */
+	GPIO117_I2C_SCL,
+	GPIO118_I2C_SDA,
+
+	/* GPIO */
+	GPIO52_GPIO,	/* IRQ from network controller */
+#ifdef CONFIG_LEDS_GPIO
+	GPIO90_GPIO,	/* PCM027_LED_CPU */
+	GPIO91_GPIO,	/* PCM027_LED_HEART_BEAT */
+#endif
+	GPIO114_GPIO,	/* IRQ from CAN controller */
+};
+
+/*
+ * SMC91x network controller specific stuff
+ */
+static struct resource smc91x_resources[] = {
+	[0] = {
+		.start	= PCM027_ETH_PHYS + 0x300,
+		.end	= PCM027_ETH_PHYS + PCM027_ETH_SIZE,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= PCM027_ETH_IRQ,
+		.end	= PCM027_ETH_IRQ,
+		/* note: smc91x's driver doesn't use the trigger bits yet */
+		.flags	= IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
+	}
+};
+
+static struct platform_device smc91x_device = {
+	.name		= "smc91x",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(smc91x_resources),
+	.resource	= smc91x_resources,
+};
+
+/*
+ * SPI host and devices
+ */
+static struct pxa2xx_spi_master pxa_ssp_master_info = {
+	.num_chipselect	= 1,
+};
+
+static struct max7301_platform_data max7301_info = {
+	.base = -1,
+};
+
+/* bus_num must match id in pxa2xx_set_spi_info() call */
+static struct spi_board_info spi_board_info[] __initdata = {
+	{
+		.modalias	= "max7301",
+		.platform_data	= &max7301_info,
+		.max_speed_hz	= 13000000,
+		.bus_num	= 1,
+		.chip_select	= 0,
+		.mode		= SPI_MODE_0,
+	},
+};
+
+/*
+ * NOR flash
+ */
+static struct physmap_flash_data pcm027_flash_data = {
+	.width  = 4,
+};
+
+static struct resource pcm027_flash_resource = {
+	.start          = PCM027_FLASH_PHYS,
+	.end            = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
+	.flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device pcm027_flash = {
+	.name           = "physmap-flash",
+	.id             = 0,
+	.dev            = {
+		.platform_data  = &pcm027_flash_data,
+	},
+	.resource       = &pcm027_flash_resource,
+	.num_resources  = 1,
+};
+
+#ifdef CONFIG_LEDS_GPIO
+
+static struct gpio_led pcm027_led[] = {
+	{
+		.name = "led0:red",	/* FIXME */
+		.gpio = PCM027_LED_CPU
+	},
+	{
+		.name = "led1:green",	/* FIXME */
+		.gpio = PCM027_LED_HEARD_BEAT
+	},
+};
+
+static struct gpio_led_platform_data pcm027_led_data = {
+	.num_leds	= ARRAY_SIZE(pcm027_led),
+	.leds		= pcm027_led
+};
+
+static struct platform_device pcm027_led_dev = {
+	.name		= "leds-gpio",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &pcm027_led_data,
+	},
+};
+
+#endif /* CONFIG_LEDS_GPIO */
+
+/*
+ * declare the available device resources on this board
+ */
+static struct platform_device *devices[] __initdata = {
+	&smc91x_device,
+	&pcm027_flash,
+#ifdef CONFIG_LEDS_GPIO
+	&pcm027_led_dev
+#endif
+};
+
+/*
+ * pcm027_init - breath some life into the board
+ */
+static void __init pcm027_init(void)
+{
+	/* system bus arbiter setting
+	 * - Core_Park
+	 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
+	 */
+	ARB_CNTRL = ARB_CORE_PARK | 0x234;
+
+	pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));
+
+	pxa_set_ffuart_info(NULL);
+	pxa_set_btuart_info(NULL);
+	pxa_set_stuart_info(NULL);
+
+	platform_add_devices(devices, ARRAY_SIZE(devices));
+
+	/* at last call the baseboard to initialize itself */
+#ifdef CONFIG_MACH_PCM990_BASEBOARD
+	pcm990_baseboard_init();
+#endif
+
+	pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
+	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
+}
+
+static void __init pcm027_map_io(void)
+{
+	pxa27x_map_io();
+
+	/* initialize sleep mode regs (wake-up sources, etc) */
+	PGSR0 = 0x01308000;
+	PGSR1 = 0x00CF0002;
+	PGSR2 = 0x0E294000;
+	PGSR3 = 0x0000C000;
+	PWER  = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
+	PRER  = 0x00000000;
+	PFER  = 0x00000003;
+}
+
+MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
+	/* Maintainer: Pengutronix */
+	.atag_offset	= 0x100,
+	.map_io		= pcm027_map_io,
+	.nr_irqs	= PCM027_NR_IRQS,
+	.init_irq	= pxa27x_init_irq,
+	.handle_irq	= pxa27x_handle_irq,
+	.init_time	= pxa_timer_init,
+	.init_machine	= pcm027_init,
+	.restart	= pxa_restart,
+MACHINE_END