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-sa1100/hackkit.c b/kernel/arch/arm/mach-sa1100/hackkit.c
new file mode 100644
index 000000000..643d5f2d9
--- /dev/null
+++ b/kernel/arch/arm/mach-sa1100/hackkit.c
@@ -0,0 +1,236 @@
+/*
+ * linux/arch/arm/mach-sa1100/hackkit.c
+ *
+ * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
+ *
+ * This file contains all HackKit tweaks. Based on original work from
+ * Nicolas Pitre's assabet fixes
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/cpufreq.h>
+#include <linux/platform_data/sa11x0-serial.h>
+#include <linux/serial_core.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/tty.h>
+#include <linux/gpio.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-types.h>
+#include <asm/setup.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+
+#include "generic.h"
+
+/**********************************************************************
+ *  prototypes
+ */
+
+/* init funcs */
+static void __init hackkit_map_io(void);
+
+static u_int hackkit_get_mctrl(struct uart_port *port);
+static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
+static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
+
+/**********************************************************************
+ *  global data
+ */
+
+/**********************************************************************
+ *  static data
+ */
+
+static struct map_desc hackkit_io_desc[] __initdata = {
+	{	/* Flash bank 0 */
+		.virtual	=  0xe8000000,
+		.pfn		= __phys_to_pfn(0x00000000),
+		.length		= 0x01000000,
+		.type		= MT_DEVICE
+	},
+};
+
+static struct sa1100_port_fns hackkit_port_fns __initdata = {
+	.set_mctrl	= hackkit_set_mctrl,
+	.get_mctrl	= hackkit_get_mctrl,
+	.pm		= hackkit_uart_pm,
+};
+
+/**********************************************************************
+ *  Static functions
+ */
+
+static void __init hackkit_map_io(void)
+{
+	sa1100_map_io();
+	iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
+
+	sa1100_register_uart_fns(&hackkit_port_fns);
+	sa1100_register_uart(0, 1);	/* com port */
+	sa1100_register_uart(1, 2);
+	sa1100_register_uart(2, 3);	/* radio module */
+
+	Ser1SDCR0 |= SDCR0_SUS;
+}
+
+/**
+ *	hackkit_uart_pm - powermgmt callback function for system 3 UART
+ *	@port: uart port structure
+ *	@state: pm state
+ *	@oldstate: old pm state
+ *
+ */
+static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
+{
+	/* TODO: switch on/off uart in powersave mode */
+}
+
+/*
+ * Note! this can be called from IRQ context.
+ * FIXME: No modem ctrl lines yet.
+ */
+static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
+{
+#if 0
+	if (port->mapbase == _Ser1UTCR0) {
+		u_int set = 0, clear = 0;
+
+		if (mctrl & TIOCM_RTS)
+			set |= PT_CTRL2_RS1_RTS;
+		else
+			clear |= PT_CTRL2_RS1_RTS;
+
+		if (mctrl & TIOCM_DTR)
+			set |= PT_CTRL2_RS1_DTR;
+		else
+			clear |= PT_CTRL2_RS1_DTR;
+
+		PTCTRL2_clear(clear);
+		PTCTRL2_set(set);
+	}
+#endif
+}
+
+static u_int hackkit_get_mctrl(struct uart_port *port)
+{
+	u_int ret = 0;
+#if 0
+	u_int irqsr = PT_IRQSR;
+
+	/* need 2 reads to read current value */
+	irqsr = PT_IRQSR;
+
+	/* TODO: check IRQ source register for modem/com
+	 status lines and set them correctly. */
+#endif
+
+	ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
+
+	return ret;
+}
+
+static struct mtd_partition hackkit_partitions[] = {
+	{
+		.name		= "BLOB",
+		.size		= 0x00040000,
+		.offset		= 0x00000000,
+		.mask_flags	= MTD_WRITEABLE,  /* force read-only */
+	}, {
+		.name		= "config",
+		.size		= 0x00040000,
+		.offset		= MTDPART_OFS_APPEND,
+	}, {
+		.name		= "kernel",
+		.size		= 0x00100000,
+		.offset		= MTDPART_OFS_APPEND,
+	}, {
+		.name		= "initrd",
+		.size		= 0x00180000,
+		.offset		= MTDPART_OFS_APPEND,
+	}, {
+		.name		= "rootfs",
+		.size		= 0x700000,
+		.offset		= MTDPART_OFS_APPEND,
+	}, {
+		.name		= "data",
+		.size		= MTDPART_SIZ_FULL,
+		.offset		= MTDPART_OFS_APPEND,
+	}
+};
+
+static struct flash_platform_data hackkit_flash_data = {
+	.map_name	= "cfi_probe",
+	.parts		= hackkit_partitions,
+	.nr_parts	= ARRAY_SIZE(hackkit_partitions),
+};
+
+static struct resource hackkit_flash_resource =
+	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
+
+/* LEDs */
+struct gpio_led hackkit_gpio_leds[] = {
+	{
+		.name			= "hackkit:red",
+		.default_trigger	= "cpu0",
+		.gpio			= 22,
+	},
+	{
+		.name			= "hackkit:green",
+		.default_trigger	= "heartbeat",
+		.gpio			= 23,
+	},
+};
+
+static struct gpio_led_platform_data hackkit_gpio_led_info = {
+	.leds		= hackkit_gpio_leds,
+	.num_leds	= ARRAY_SIZE(hackkit_gpio_leds),
+};
+
+static struct platform_device hackkit_leds = {
+	.name	= "leds-gpio",
+	.id	= -1,
+	.dev	= {
+		.platform_data	= &hackkit_gpio_led_info,
+	}
+};
+
+static void __init hackkit_init(void)
+{
+	sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
+	platform_device_register(&hackkit_leds);
+}
+
+/**********************************************************************
+ *  Exported Functions
+ */
+
+MACHINE_START(HACKKIT, "HackKit Cpu Board")
+	.atag_offset	= 0x100,
+	.map_io		= hackkit_map_io,
+	.nr_irqs	= SA1100_NR_IRQS,
+	.init_irq	= sa1100_init_irq,
+	.init_time	= sa1100_timer_init,
+	.init_machine	= hackkit_init,
+	.init_late	= sa11x0_init_late,
+	.restart	= sa11x0_restart,
+MACHINE_END