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>

4 files changed, 491 insertions, 0 deletions

diff --git a/kernel/arch/sh/boards/mach-r2d/Kconfig b/kernel/arch/sh/boards/mach-r2d/Kconfig
new file mode 100644
index 000000000..8122a9667
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-r2d/Kconfig
@@ -0,0 +1,23 @@
+if SH_RTS7751R2D
+
+menu "RTS7751R2D Board Revision"
+
+config RTS7751R2D_PLUS
+	bool "R2D-PLUS"
+	help
+	  Selecting this option will configure the kernel for R2D-PLUS.
+
+	  R2D-PLUS is the smaller of the two R2D board versions, equipped
+	  with a single PCI slot.
+
+config RTS7751R2D_1
+	bool "R2D-1"
+	help
+	  Selecting this option will configure the kernel for R2D-1.
+
+	  R2D-1 is the larger of the two R2D board versions, equipped
+	  with two PCI slots.
+endmenu
+
+endif
+
diff --git a/kernel/arch/sh/boards/mach-r2d/Makefile b/kernel/arch/sh/boards/mach-r2d/Makefile
new file mode 100644
index 000000000..0d4c75a72
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-r2d/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the RTS7751R2D specific parts of the kernel
+#
+
+obj-y	 := setup.o irq.o
diff --git a/kernel/arch/sh/boards/mach-r2d/irq.c b/kernel/arch/sh/boards/mach-r2d/irq.c
new file mode 100644
index 000000000..574f009c3
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-r2d/irq.c
@@ -0,0 +1,155 @@
+/*
+ * linux/arch/sh/boards/renesas/rts7751r2d/irq.c
+ *
+ * Copyright (C) 2007  Magnus Damm
+ * Copyright (C) 2000  Kazumoto Kojima
+ *
+ * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1.
+ *
+ * Modified for RTS7751R2D by
+ * Atom Create Engineering Co., Ltd. 2002.
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <mach/r2d.h>
+
+#define R2D_NR_IRL 13
+
+enum {
+	UNUSED = 0,
+
+	/* board specific interrupt sources (R2D-1 and R2D-PLUS) */
+	EXT,              /* EXT_INT0-3 */
+	RTC_T, RTC_A,     /* Real Time Clock */
+	AX88796,          /* Ethernet controller (R2D-1 board) */
+	KEY,              /* Key input (R2D-PLUS board) */
+	SDCARD,           /* SD Card */
+	CF_CD, CF_IDE,    /* CF Card Detect + CF IDE */
+	SM501,            /* SM501 aka Voyager */
+	PCI_INTD_RTL8139, /* Ethernet controller */
+	PCI_INTC_PCI1520, /* Cardbus/PCMCIA bridge */
+	PCI_INTB_RTL8139, /* Ethernet controller with HUB (R2D-PLUS board) */
+	PCI_INTB_SLOT,    /* PCI Slot 3.3v (R2D-1 board) */
+	PCI_INTA_SLOT,    /* PCI Slot 3.3v */
+	TP,               /* Touch Panel */
+};
+
+#ifdef CONFIG_RTS7751R2D_1
+
+/* Vectors for R2D-1 */
+static struct intc_vect vectors_r2d_1[] __initdata = {
+	INTC_IRQ(EXT, IRQ_EXT),
+	INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
+	INTC_IRQ(AX88796, IRQ_AX88796), INTC_IRQ(SDCARD, IRQ_SDCARD),
+	INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), /* ng */
+	INTC_IRQ(SM501, IRQ_VOYAGER),
+	INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
+	INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
+	INTC_IRQ(PCI_INTB_SLOT, IRQ_PCI_INTB),
+	INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
+	INTC_IRQ(TP, IRQ_TP),
+};
+
+/* IRLMSK mask register layout for R2D-1 */
+static struct intc_mask_reg mask_registers_r2d_1[] __initdata = {
+	{ 0xa4000000, 0, 16, /* IRLMSK */
+	  { TP, PCI_INTA_SLOT, PCI_INTB_SLOT,
+	    PCI_INTC_PCI1520, PCI_INTD_RTL8139,
+	    SM501, CF_IDE, CF_CD, SDCARD, AX88796,
+	    RTC_A, RTC_T, 0, 0, 0, EXT } },
+};
+
+/* IRLn to IRQ table for R2D-1 */
+static unsigned char irl2irq_r2d_1[R2D_NR_IRL] __initdata = {
+	IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
+	IRQ_VOYAGER, IRQ_AX88796, IRQ_RTC_A, IRQ_RTC_T,
+	IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
+	IRQ_TP,
+};
+
+static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1,
+			 NULL, mask_registers_r2d_1, NULL, NULL);
+
+#endif /* CONFIG_RTS7751R2D_1 */
+
+#ifdef CONFIG_RTS7751R2D_PLUS
+
+/* Vectors for R2D-PLUS */
+static struct intc_vect vectors_r2d_plus[] __initdata = {
+	INTC_IRQ(EXT, IRQ_EXT),
+	INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
+	INTC_IRQ(KEY, IRQ_KEY), INTC_IRQ(SDCARD, IRQ_SDCARD),
+	INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE),
+	INTC_IRQ(SM501, IRQ_VOYAGER),
+	INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
+	INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
+	INTC_IRQ(PCI_INTB_RTL8139, IRQ_PCI_INTB),
+	INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
+	INTC_IRQ(TP, IRQ_TP),
+};
+
+/* IRLMSK mask register layout for R2D-PLUS */
+static struct intc_mask_reg mask_registers_r2d_plus[] __initdata = {
+	{ 0xa4000000, 0, 16, /* IRLMSK */
+	  { TP, PCI_INTA_SLOT, PCI_INTB_RTL8139,
+	    PCI_INTC_PCI1520, PCI_INTD_RTL8139,
+	    SM501, CF_IDE, CF_CD, SDCARD, KEY,
+	    RTC_A, RTC_T, 0, 0, 0, EXT } },
+};
+
+/* IRLn to IRQ table for R2D-PLUS */
+static unsigned char irl2irq_r2d_plus[R2D_NR_IRL] __initdata = {
+	IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
+	IRQ_VOYAGER, IRQ_KEY, IRQ_RTC_A, IRQ_RTC_T,
+	IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
+	IRQ_TP,
+};
+
+static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus,
+			 NULL, mask_registers_r2d_plus, NULL, NULL);
+
+#endif /* CONFIG_RTS7751R2D_PLUS */
+
+static unsigned char irl2irq[R2D_NR_IRL];
+
+int rts7751r2d_irq_demux(int irq)
+{
+	if (irq >= R2D_NR_IRL || irq < 0 || !irl2irq[irq])
+		return irq;
+
+	return irl2irq[irq];
+}
+
+/*
+ * Initialize IRQ setting
+ */
+void __init init_rts7751r2d_IRQ(void)
+{
+	struct intc_desc *d;
+
+	switch (__raw_readw(PA_VERREG) & 0xf0) {
+#ifdef CONFIG_RTS7751R2D_PLUS
+	case 0x10:
+		printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n");
+		d = &intc_desc_r2d_plus;
+		memcpy(irl2irq, irl2irq_r2d_plus, R2D_NR_IRL);
+		break;
+#endif
+#ifdef CONFIG_RTS7751R2D_1
+	case 0x00: /* according to manual */
+	case 0x30: /* in reality */
+		printk(KERN_INFO "Using R2D-1 interrupt controller.\n");
+		d = &intc_desc_r2d_1;
+		memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL);
+		break;
+#endif
+	default:
+		printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n",
+		       __raw_readw(PA_VERREG));
+		return;
+	}
+
+	register_intc_controller(d);
+}
diff --git a/kernel/arch/sh/boards/mach-r2d/setup.c b/kernel/arch/sh/boards/mach-r2d/setup.c
new file mode 100644
index 000000000..4b98a5251
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-r2d/setup.c
@@ -0,0 +1,308 @@
+/*
+ * Renesas Technology Sales RTS7751R2D Support.
+ *
+ * Copyright (C) 2002 - 2006 Atom Create Engineering Co., Ltd.
+ * Copyright (C) 2004 - 2007 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/ata_platform.h>
+#include <linux/sm501.h>
+#include <linux/sm501-regs.h>
+#include <linux/pm.h>
+#include <linux/fb.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/spi_bitbang.h>
+#include <asm/machvec.h>
+#include <mach/r2d.h>
+#include <asm/io.h>
+#include <asm/io_trapped.h>
+#include <asm/spi.h>
+
+static struct resource cf_ide_resources[] = {
+	[0] = {
+		.start	= PA_AREA5_IO + 0x1000,
+		.end	= PA_AREA5_IO + 0x1000 + 0x10 - 0x2,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= PA_AREA5_IO + 0x80c,
+		.end	= PA_AREA5_IO + 0x80c,
+		.flags	= IORESOURCE_MEM,
+	},
+#ifndef CONFIG_RTS7751R2D_1 /* For R2D-1 polling is preferred */
+	[2] = {
+		.start	= IRQ_CF_IDE,
+		.flags	= IORESOURCE_IRQ,
+	},
+#endif
+};
+
+static struct pata_platform_info pata_info = {
+	.ioport_shift	= 1,
+};
+
+static struct platform_device cf_ide_device  = {
+	.name		= "pata_platform",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(cf_ide_resources),
+	.resource	= cf_ide_resources,
+	.dev	= {
+		.platform_data	= &pata_info,
+	},
+};
+
+static struct spi_board_info spi_bus[] = {
+	{
+		.modalias	= "rtc-r9701",
+		.max_speed_hz	= 1000000,
+		.mode		= SPI_MODE_3,
+	},
+};
+
+static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state)
+{
+	BUG_ON(cs != 0);  /* Single Epson RTC-9701JE attached on CS0 */
+	__raw_writew(state == BITBANG_CS_ACTIVE, PA_RTCCE);
+}
+
+static struct sh_spi_info spi_info = {
+	.num_chipselect = 1,
+	.chip_select = r2d_chip_select,
+};
+
+static struct resource spi_sh_sci_resources[] = {
+	{
+		.start	= 0xffe00000,
+		.end	= 0xffe0001f,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device spi_sh_sci_device  = {
+	.name		= "spi_sh_sci",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(spi_sh_sci_resources),
+	.resource	= spi_sh_sci_resources,
+	.dev	= {
+		.platform_data	= &spi_info,
+	},
+};
+
+static struct resource heartbeat_resources[] = {
+	[0] = {
+		.start	= PA_OUTPORT,
+		.end	= PA_OUTPORT,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device heartbeat_device = {
+	.name		= "heartbeat",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(heartbeat_resources),
+	.resource	= heartbeat_resources,
+};
+
+static struct resource sm501_resources[] = {
+	[0]	= {
+		.start	= 0x10000000,
+		.end	= 0x13e00000 - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1]	= {
+		.start	= 0x13e00000,
+		.end	= 0x13ffffff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[2]	= {
+		.start	= IRQ_VOYAGER,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct fb_videomode sm501_default_mode = {
+	.pixclock	= 35714,
+	.xres		= 640,
+	.yres		= 480,
+	.left_margin	= 105,
+	.right_margin	= 50,
+	.upper_margin	= 35,
+	.lower_margin	= 0,
+	.hsync_len	= 96,
+	.vsync_len	= 2,
+	.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+};
+
+static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
+	.def_bpp	= 16,
+	.def_mode	= &sm501_default_mode,
+	.flags		= SM501FB_FLAG_USE_INIT_MODE |
+			  SM501FB_FLAG_USE_HWCURSOR |
+			  SM501FB_FLAG_USE_HWACCEL |
+			  SM501FB_FLAG_DISABLE_AT_EXIT,
+};
+
+static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = {
+	.flags		= (SM501FB_FLAG_USE_INIT_MODE |
+			   SM501FB_FLAG_USE_HWCURSOR |
+			   SM501FB_FLAG_USE_HWACCEL |
+			   SM501FB_FLAG_DISABLE_AT_EXIT),
+
+};
+
+static struct sm501_platdata_fb sm501_fb_pdata = {
+	.fb_route	= SM501_FB_OWN,
+	.fb_crt		= &sm501_pdata_fbsub_crt,
+	.fb_pnl		= &sm501_pdata_fbsub_pnl,
+	.flags		= SM501_FBPD_SWAP_FB_ENDIAN,
+};
+
+static struct sm501_initdata sm501_initdata = {
+	.devices	= SM501_USE_USB_HOST | SM501_USE_UART0,
+};
+
+static struct sm501_platdata sm501_platform_data = {
+	.init		= &sm501_initdata,
+	.fb		= &sm501_fb_pdata,
+};
+
+static struct platform_device sm501_device = {
+	.name		= "sm501",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &sm501_platform_data,
+	},
+	.num_resources	= ARRAY_SIZE(sm501_resources),
+	.resource	= sm501_resources,
+};
+
+static struct mtd_partition r2d_partitions[] = {
+	{
+		.name		= "U-Boot",
+		.offset		= 0x00000000,
+		.size		= 0x00040000,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "Environment",
+		.offset		= MTDPART_OFS_NXTBLK,
+		.size		= 0x00040000,
+		.mask_flags	= MTD_WRITEABLE,
+	}, {
+		.name		= "Kernel",
+		.offset		= MTDPART_OFS_NXTBLK,
+		.size		= 0x001c0000,
+	}, {
+		.name		= "Flash_FS",
+		.offset		= MTDPART_OFS_NXTBLK,
+		.size		= MTDPART_SIZ_FULL,
+	}
+};
+
+static struct physmap_flash_data flash_data = {
+	.width		= 2,
+	.nr_parts	= ARRAY_SIZE(r2d_partitions),
+	.parts		= r2d_partitions,
+};
+
+static struct resource flash_resource = {
+	.start		= 0x00000000,
+	.end		= 0x02000000,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device = {
+	.name		= "physmap-flash",
+	.id		= -1,
+	.resource	= &flash_resource,
+	.num_resources	= 1,
+	.dev		= {
+		.platform_data = &flash_data,
+	},
+};
+
+static struct platform_device *rts7751r2d_devices[] __initdata = {
+	&sm501_device,
+	&heartbeat_device,
+	&spi_sh_sci_device,
+};
+
+/*
+ * The CF is connected with a 16-bit bus where 8-bit operations are
+ * unsupported. The linux ata driver is however using 8-bit operations, so
+ * insert a trapped io filter to convert 8-bit operations into 16-bit.
+ */
+static struct trapped_io cf_trapped_io = {
+	.resource		= cf_ide_resources,
+	.num_resources		= 2,
+	.minimum_bus_width	= 16,
+};
+
+static int __init rts7751r2d_devices_setup(void)
+{
+	if (register_trapped_io(&cf_trapped_io) == 0)
+		platform_device_register(&cf_ide_device);
+
+	if (mach_is_r2d_plus())
+		platform_device_register(&flash_device);
+
+	spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
+
+	return platform_add_devices(rts7751r2d_devices,
+				    ARRAY_SIZE(rts7751r2d_devices));
+}
+device_initcall(rts7751r2d_devices_setup);
+
+static void rts7751r2d_power_off(void)
+{
+	__raw_writew(0x0001, PA_POWOFF);
+}
+
+/*
+ * Initialize the board
+ */
+static void __init rts7751r2d_setup(char **cmdline_p)
+{
+	void __iomem *sm501_reg;
+	u16 ver = __raw_readw(PA_VERREG);
+
+	printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n");
+
+	printk(KERN_INFO "FPGA version:%d (revision:%d)\n",
+					(ver >> 4) & 0xf, ver & 0xf);
+
+	__raw_writew(0x0000, PA_OUTPORT);
+	pm_power_off = rts7751r2d_power_off;
+
+	/* sm501 dram configuration:
+	 * ColSizeX = 11 - External Memory Column Size: 256 words.
+	 * APX = 1 - External Memory Active to Pre-Charge Delay: 7 clocks.
+	 * RstX = 1 - External Memory Reset: Normal.
+	 * Rfsh = 1 - Local Memory Refresh to Command Delay: 12 clocks.
+	 * BwC =  1 - Local Memory Block Write Cycle Time: 2 clocks.
+	 * BwP =  1 - Local Memory Block Write to Pre-Charge Delay: 1 clock.
+	 * AP = 1 - Internal Memory Active to Pre-Charge Delay: 7 clocks.
+	 * Rst = 1 - Internal Memory Reset: Normal.
+	 * RA = 1 - Internal Memory Remain in Active State: Do not remain.
+	 */
+
+	sm501_reg = (void __iomem *)0xb3e00000 + SM501_DRAM_CONTROL;
+	writel(readl(sm501_reg) | 0x00f107c0, sm501_reg);
+}
+
+/*
+ * The Machine Vector
+ */
+static struct sh_machine_vector mv_rts7751r2d __initmv = {
+	.mv_name		= "RTS7751R2D",
+	.mv_setup		= rts7751r2d_setup,
+	.mv_init_irq		= init_rts7751r2d_IRQ,
+	.mv_irq_demux		= rts7751r2d_irq_demux,
+};