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, 154 insertions, 0 deletions

diff --git a/kernel/arch/mips/alchemy/board-xxs1500.c b/kernel/arch/mips/alchemy/board-xxs1500.c
new file mode 100644
index 000000000..0fc53e08a
--- /dev/null
+++ b/kernel/arch/mips/alchemy/board-xxs1500.c
@@ -0,0 +1,154 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ *	MyCable XXS1500 board support
+ *
+ * Copyright 2003, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <asm/bootinfo.h>
+#include <asm/reboot.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <prom.h>
+
+const char *get_system_type(void)
+{
+	return "XXS1500";
+}
+
+void __init prom_init(void)
+{
+	unsigned char *memsize_str;
+	unsigned long memsize;
+
+	prom_argc = fw_arg0;
+	prom_argv = (char **)fw_arg1;
+	prom_envp = (char **)fw_arg2;
+
+	prom_init_cmdline();
+
+	memsize_str = prom_getenv("memsize");
+	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
+		memsize = 0x04000000;
+
+	add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
+
+void prom_putchar(unsigned char c)
+{
+	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
+}
+
+static void xxs1500_reset(char *c)
+{
+	/* Jump to the reset vector */
+	__asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
+}
+
+static void xxs1500_power_off(void)
+{
+	while (1)
+		asm volatile (
+		"	.set	mips32					\n"
+		"	wait						\n"
+		"	.set	mips0					\n");
+}
+
+void __init board_setup(void)
+{
+	u32 pin_func;
+
+	pm_power_off = xxs1500_power_off;
+	_machine_halt = xxs1500_power_off;
+	_machine_restart = xxs1500_reset;
+
+	alchemy_gpio1_input_enable();
+	alchemy_gpio2_enable();
+
+	/* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
+	pin_func  = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3;
+	pin_func |= SYS_PF_UR3;
+	alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC);
+
+	/* Enable UART */
+	alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
+	/* Enable DTR (MCR bit 0) = USB power up */
+	__raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18));
+	wmb();
+}
+
+/******************************************************************************/
+
+static struct resource xxs1500_pcmcia_res[] = {
+	{
+		.name	= "pcmcia-io",
+		.flags	= IORESOURCE_MEM,
+		.start	= AU1000_PCMCIA_IO_PHYS_ADDR,
+		.end	= AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1,
+	},
+	{
+		.name	= "pcmcia-attr",
+		.flags	= IORESOURCE_MEM,
+		.start	= AU1000_PCMCIA_ATTR_PHYS_ADDR,
+		.end	= AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
+	},
+	{
+		.name	= "pcmcia-mem",
+		.flags	= IORESOURCE_MEM,
+		.start	= AU1000_PCMCIA_MEM_PHYS_ADDR,
+		.end	= AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
+	},
+};
+
+static struct platform_device xxs1500_pcmcia_dev = {
+	.name		= "xxs1500_pcmcia",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(xxs1500_pcmcia_res),
+	.resource	= xxs1500_pcmcia_res,
+};
+
+static struct platform_device *xxs1500_devs[] __initdata = {
+	&xxs1500_pcmcia_dev,
+};
+
+static int __init xxs1500_dev_init(void)
+{
+	irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
+	irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW);
+
+	irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);
+	irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */
+	irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);
+
+	return platform_add_devices(xxs1500_devs,
+				    ARRAY_SIZE(xxs1500_devs));
+}
+device_initcall(xxs1500_dev_init);