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, 236 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-pxa/cm-x255.c b/kernel/arch/arm/mach-pxa/cm-x255.c
new file mode 100644
index 000000000..be751470d
--- /dev/null
+++ b/kernel/arch/arm/mach-pxa/cm-x255.c
@@ -0,0 +1,236 @@
+/*
+ * linux/arch/arm/mach-pxa/cm-x255.c
+ *
+ * Copyright (C) 2007, 2008 CompuLab, Ltd.
+ * Mike Rapoport <mike@compulab.co.il>
+ *
+ * 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/platform_device.h>
+#include <linux/irq.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/nand-gpio.h>
+
+#include <linux/spi/spi.h>
+#include <linux/spi/pxa2xx_spi.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+#include <asm/mach/map.h>
+
+#include <mach/pxa25x.h>
+
+#include "generic.h"
+
+#define GPIO_NAND_CS	(5)
+#define GPIO_NAND_ALE	(4)
+#define GPIO_NAND_CLE	(3)
+#define GPIO_NAND_RB	(10)
+
+static unsigned long cmx255_pin_config[] = {
+	/* AC'97 */
+	GPIO28_AC97_BITCLK,
+	GPIO29_AC97_SDATA_IN_0,
+	GPIO30_AC97_SDATA_OUT,
+	GPIO31_AC97_SYNC,
+
+	/* BTUART */
+	GPIO42_BTUART_RXD,
+	GPIO43_BTUART_TXD,
+	GPIO44_BTUART_CTS,
+	GPIO45_BTUART_RTS,
+
+	/* STUART */
+	GPIO46_STUART_RXD,
+	GPIO47_STUART_TXD,
+
+	/* LCD */
+	GPIOxx_LCD_TFT_16BPP,
+
+	/* SSP1 */
+	GPIO23_SSP1_SCLK,
+	GPIO24_SSP1_SFRM,
+	GPIO25_SSP1_TXD,
+	GPIO26_SSP1_RXD,
+
+	/* SSP2 */
+	GPIO81_SSP2_CLK_OUT,
+	GPIO82_SSP2_FRM_OUT,
+	GPIO83_SSP2_TXD,
+	GPIO84_SSP2_RXD,
+
+	/* PC Card */
+	GPIO48_nPOE,
+	GPIO49_nPWE,
+	GPIO50_nPIOR,
+	GPIO51_nPIOW,
+	GPIO52_nPCE_1,
+	GPIO53_nPCE_2,
+	GPIO54_nPSKTSEL,
+	GPIO55_nPREG,
+	GPIO56_nPWAIT,
+	GPIO57_nIOIS16,
+
+	/* SDRAM and local bus */
+	GPIO15_nCS_1,
+	GPIO78_nCS_2,
+	GPIO79_nCS_3,
+	GPIO80_nCS_4,
+	GPIO33_nCS_5,
+	GPIO18_RDY,
+
+	/* GPIO */
+	GPIO0_GPIO	| WAKEUP_ON_EDGE_BOTH,
+	GPIO9_GPIO,				/* PC card reset */
+
+	/* NAND controls */
+	GPIO5_GPIO	| MFP_LPM_DRIVE_HIGH,	/* NAND CE# */
+	GPIO4_GPIO	| MFP_LPM_DRIVE_LOW,	/* NAND ALE */
+	GPIO3_GPIO	| MFP_LPM_DRIVE_LOW,	/* NAND CLE */
+	GPIO10_GPIO,				/* NAND Ready/Busy */
+
+	/* interrupts */
+	GPIO22_GPIO,	/* DM9000 interrupt */
+};
+
+#if defined(CONFIG_SPI_PXA2XX)
+static struct pxa2xx_spi_master pxa_ssp_master_info = {
+	.num_chipselect	= 1,
+};
+
+static struct spi_board_info spi_board_info[] __initdata = {
+	[0] = {
+		.modalias	= "rtc-max6902",
+		.max_speed_hz	= 1000000,
+		.bus_num	= 1,
+		.chip_select	= 0,
+	},
+};
+
+static void __init cmx255_init_rtc(void)
+{
+	pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
+	spi_register_board_info(ARRAY_AND_SIZE(spi_board_info));
+}
+#else
+static inline void cmx255_init_rtc(void) {}
+#endif
+
+#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
+static struct mtd_partition cmx255_nor_partitions[] = {
+	{
+		.name		= "ARMmon",
+		.size		= 0x00030000,
+		.offset		= 0,
+		.mask_flags	= MTD_WRITEABLE  /* force read-only */
+	} , {
+		.name		= "ARMmon setup block",
+		.size		= 0x00010000,
+		.offset		= MTDPART_OFS_APPEND,
+		.mask_flags	= MTD_WRITEABLE  /* force read-only */
+	} , {
+		.name		= "kernel",
+		.size		= 0x00160000,
+		.offset		= MTDPART_OFS_APPEND,
+	} , {
+		.name		= "ramdisk",
+		.size		= MTDPART_SIZ_FULL,
+		.offset		= MTDPART_OFS_APPEND
+	}
+};
+
+static struct physmap_flash_data cmx255_nor_flash_data[] = {
+	{
+		.width		= 2,	/* bankwidth in bytes */
+		.parts		= cmx255_nor_partitions,
+		.nr_parts	= ARRAY_SIZE(cmx255_nor_partitions)
+	}
+};
+
+static struct resource cmx255_nor_resource = {
+	.start	= PXA_CS0_PHYS,
+	.end	= PXA_CS0_PHYS + SZ_8M - 1,
+	.flags	= IORESOURCE_MEM,
+};
+
+static struct platform_device cmx255_nor = {
+	.name	= "physmap-flash",
+	.id	= -1,
+	.dev	= {
+		.platform_data = cmx255_nor_flash_data,
+	},
+	.resource = &cmx255_nor_resource,
+	.num_resources = 1,
+};
+
+static void __init cmx255_init_nor(void)
+{
+	platform_device_register(&cmx255_nor);
+}
+#else
+static inline void cmx255_init_nor(void) {}
+#endif
+
+#if defined(CONFIG_MTD_NAND_GPIO) || defined(CONFIG_MTD_NAND_GPIO_MODULE)
+static struct resource cmx255_nand_resource[] = {
+	[0] = {
+		.start = PXA_CS1_PHYS,
+		.end   = PXA_CS1_PHYS + 11,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = PXA_CS5_PHYS,
+		.end   = PXA_CS5_PHYS + 3,
+		.flags = IORESOURCE_MEM,
+	},
+};
+
+static struct mtd_partition cmx255_nand_parts[] = {
+	[0] = {
+		.name	= "cmx255-nand",
+		.size	= MTDPART_SIZ_FULL,
+		.offset	= 0,
+	},
+};
+
+static struct gpio_nand_platdata cmx255_nand_platdata = {
+	.gpio_nce = GPIO_NAND_CS,
+	.gpio_cle = GPIO_NAND_CLE,
+	.gpio_ale = GPIO_NAND_ALE,
+	.gpio_rdy = GPIO_NAND_RB,
+	.gpio_nwp = -1,
+	.parts = cmx255_nand_parts,
+	.num_parts = ARRAY_SIZE(cmx255_nand_parts),
+	.chip_delay = 25,
+};
+
+static struct platform_device cmx255_nand = {
+	.name		= "gpio-nand",
+	.num_resources	= ARRAY_SIZE(cmx255_nand_resource),
+	.resource	= cmx255_nand_resource,
+	.id		= -1,
+	.dev		= {
+		.platform_data = &cmx255_nand_platdata,
+	}
+};
+
+static void __init cmx255_init_nand(void)
+{
+	platform_device_register(&cmx255_nand);
+}
+#else
+static inline void cmx255_init_nand(void) {}
+#endif
+
+void __init cmx255_init(void)
+{
+	pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx255_pin_config));
+
+	cmx255_init_rtc();
+	cmx255_init_nor();
+	cmx255_init_nand();
+}