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>

3 files changed, 242 insertions, 0 deletions

diff --git a/kernel/arch/sh/boards/mach-sh03/Makefile b/kernel/arch/sh/boards/mach-sh03/Makefile
new file mode 100644
index 000000000..400306a79
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-sh03/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the Interface (CTP/PCI-SH03) specific parts of the kernel
+#
+
+obj-y	 := setup.o rtc.o
diff --git a/kernel/arch/sh/boards/mach-sh03/rtc.c b/kernel/arch/sh/boards/mach-sh03/rtc.c
new file mode 100644
index 000000000..f83ac7995
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-sh03/rtc.c
@@ -0,0 +1,132 @@
+/*
+ * linux/arch/sh/boards/sh03/rtc.c -- CTP/PCI-SH03 on-chip RTC support
+ *
+ *  Copyright (C) 2004  Saito.K & Jeanne(ksaito@interface.co.jp)
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/time.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+#include <asm/rtc.h>
+
+#define RTC_BASE	0xb0000000
+#define RTC_SEC1	(RTC_BASE + 0)
+#define RTC_SEC10	(RTC_BASE + 1)
+#define RTC_MIN1	(RTC_BASE + 2)
+#define RTC_MIN10	(RTC_BASE + 3)
+#define RTC_HOU1	(RTC_BASE + 4)
+#define RTC_HOU10	(RTC_BASE + 5)
+#define RTC_WEE1	(RTC_BASE + 6)
+#define RTC_DAY1	(RTC_BASE + 7)
+#define RTC_DAY10	(RTC_BASE + 8)
+#define RTC_MON1	(RTC_BASE + 9)
+#define RTC_MON10	(RTC_BASE + 10)
+#define RTC_YEA1	(RTC_BASE + 11)
+#define RTC_YEA10	(RTC_BASE + 12)
+#define RTC_YEA100	(RTC_BASE + 13)
+#define RTC_YEA1000	(RTC_BASE + 14)
+#define RTC_CTL		(RTC_BASE + 15)
+#define RTC_BUSY	1
+#define RTC_STOP	2
+
+static DEFINE_SPINLOCK(sh03_rtc_lock);
+
+unsigned long get_cmos_time(void)
+{
+	unsigned int year, mon, day, hour, min, sec;
+
+	spin_lock(&sh03_rtc_lock);
+ again:
+	do {
+		sec  = (__raw_readb(RTC_SEC1) & 0xf) + (__raw_readb(RTC_SEC10) & 0x7) * 10;
+		min  = (__raw_readb(RTC_MIN1) & 0xf) + (__raw_readb(RTC_MIN10) & 0xf) * 10;
+		hour = (__raw_readb(RTC_HOU1) & 0xf) + (__raw_readb(RTC_HOU10) & 0xf) * 10;
+		day  = (__raw_readb(RTC_DAY1) & 0xf) + (__raw_readb(RTC_DAY10) & 0xf) * 10;
+		mon  = (__raw_readb(RTC_MON1) & 0xf) + (__raw_readb(RTC_MON10) & 0xf) * 10;
+		year = (__raw_readb(RTC_YEA1) & 0xf) + (__raw_readb(RTC_YEA10) & 0xf) * 10
+		     + (__raw_readb(RTC_YEA100 ) & 0xf) * 100
+		     + (__raw_readb(RTC_YEA1000) & 0xf) * 1000;
+	} while (sec != (__raw_readb(RTC_SEC1) & 0xf) + (__raw_readb(RTC_SEC10) & 0x7) * 10);
+	if (year == 0 || mon < 1 || mon > 12 || day > 31 || day < 1 ||
+	    hour > 23 || min > 59 || sec > 59) {
+		printk(KERN_ERR
+		       "SH-03 RTC: invalid value, resetting to 1 Jan 2000\n");
+		printk("year=%d, mon=%d, day=%d, hour=%d, min=%d, sec=%d\n",
+		       year, mon, day, hour, min, sec);
+
+		__raw_writeb(0, RTC_SEC1); __raw_writeb(0, RTC_SEC10);
+		__raw_writeb(0, RTC_MIN1); __raw_writeb(0, RTC_MIN10);
+		__raw_writeb(0, RTC_HOU1); __raw_writeb(0, RTC_HOU10);
+		__raw_writeb(6, RTC_WEE1);
+		__raw_writeb(1, RTC_DAY1); __raw_writeb(0, RTC_DAY10);
+		__raw_writeb(1, RTC_MON1); __raw_writeb(0, RTC_MON10);
+		__raw_writeb(0, RTC_YEA1); __raw_writeb(0, RTC_YEA10);
+		__raw_writeb(0, RTC_YEA100);
+		__raw_writeb(2, RTC_YEA1000);
+		__raw_writeb(0, RTC_CTL);
+		goto again;
+	}
+
+	spin_unlock(&sh03_rtc_lock);
+	return mktime(year, mon, day, hour, min, sec);
+}
+
+void sh03_rtc_gettimeofday(struct timespec *tv)
+{
+
+	tv->tv_sec = get_cmos_time();
+	tv->tv_nsec = 0;
+}
+
+static int set_rtc_mmss(unsigned long nowtime)
+{
+	int retval = 0;
+	int real_seconds, real_minutes, cmos_minutes;
+	int i;
+
+	/* gets recalled with irq locally disabled */
+	spin_lock(&sh03_rtc_lock);
+	for (i = 0 ; i < 1000000 ; i++)	/* may take up to 1 second... */
+		if (!(__raw_readb(RTC_CTL) & RTC_BUSY))
+			break;
+	cmos_minutes = (__raw_readb(RTC_MIN1) & 0xf) + (__raw_readb(RTC_MIN10) & 0xf) * 10;
+	real_seconds = nowtime % 60;
+	real_minutes = nowtime / 60;
+	if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1)
+		real_minutes += 30;		/* correct for half hour time zone */
+	real_minutes %= 60;
+
+	if (abs(real_minutes - cmos_minutes) < 30) {
+		__raw_writeb(real_seconds % 10, RTC_SEC1);
+		__raw_writeb(real_seconds / 10, RTC_SEC10);
+		__raw_writeb(real_minutes % 10, RTC_MIN1);
+		__raw_writeb(real_minutes / 10, RTC_MIN10);
+	} else {
+		printk_once(KERN_NOTICE
+		       "set_rtc_mmss: can't update from %d to %d\n",
+		       cmos_minutes, real_minutes);
+		retval = -1;
+	}
+	spin_unlock(&sh03_rtc_lock);
+
+	return retval;
+}
+
+int sh03_rtc_settimeofday(const time_t secs)
+{
+	unsigned long nowtime = secs;
+
+	return set_rtc_mmss(nowtime);
+}
+
+void sh03_time_init(void)
+{
+	rtc_sh_get_time = sh03_rtc_gettimeofday;
+	rtc_sh_set_time = sh03_rtc_settimeofday;
+}
diff --git a/kernel/arch/sh/boards/mach-sh03/setup.c b/kernel/arch/sh/boards/mach-sh03/setup.c
new file mode 100644
index 000000000..f582dab59
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-sh03/setup.c
@@ -0,0 +1,105 @@
+/*
+ * linux/arch/sh/boards/sh03/setup.c
+ *
+ * Copyright (C) 2004  Interface Co.,Ltd. Saito.K
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/ata_platform.h>
+#include <asm/io.h>
+#include <asm/rtc.h>
+#include <mach-sh03/mach/io.h>
+#include <mach-sh03/mach/sh03.h>
+#include <asm/addrspace.h>
+
+static void __init init_sh03_IRQ(void)
+{
+	plat_irq_setup_pins(IRQ_MODE_IRQ);
+}
+
+/* arch/sh/boards/sh03/rtc.c */
+void sh03_time_init(void);
+
+static void __init sh03_setup(char **cmdline_p)
+{
+	board_time_init = sh03_time_init;
+}
+
+static struct resource cf_ide_resources[] = {
+	[0] = {
+		.start  = 0x1f0,
+		.end    = 0x1f0 + 8,
+		.flags  = IORESOURCE_IO,
+	},
+	[1] = {
+		.start  = 0x1f0 + 0x206,
+		.end    = 0x1f0 +8 + 0x206 + 8,
+		.flags  = IORESOURCE_IO,
+	},
+	[2] = {
+		.start  = IRL2_IRQ,
+		.flags  = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device cf_ide_device = {
+	.name		= "pata_platform",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(cf_ide_resources),
+	.resource	= cf_ide_resources,
+};
+
+static struct resource heartbeat_resources[] = {
+	[0] = {
+		.start	= 0xa0800000,
+		.end	= 0xa0800000,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device heartbeat_device = {
+	.name		= "heartbeat",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(heartbeat_resources),
+	.resource	= heartbeat_resources,
+};
+
+static struct platform_device *sh03_devices[] __initdata = {
+	&heartbeat_device,
+	&cf_ide_device,
+};
+
+static int __init sh03_devices_setup(void)
+{
+	pgprot_t prot;
+	unsigned long paddrbase;
+	void *cf_ide_base;
+
+	/* open I/O area window */
+	paddrbase = virt_to_phys((void *)PA_AREA5_IO);
+	prot = PAGE_KERNEL_PCC(1, _PAGE_PCC_IO16);
+	cf_ide_base = ioremap_prot(paddrbase, PAGE_SIZE, pgprot_val(prot));
+	if (!cf_ide_base) {
+		printk("allocate_cf_area : can't open CF I/O window!\n");
+		return -ENOMEM;
+	}
+
+	/* IDE cmd address : 0x1f0-0x1f7 and 0x3f6 */
+	cf_ide_resources[0].start += (unsigned long)cf_ide_base;
+	cf_ide_resources[0].end   += (unsigned long)cf_ide_base;
+	cf_ide_resources[1].start += (unsigned long)cf_ide_base;
+	cf_ide_resources[1].end   += (unsigned long)cf_ide_base;
+
+	return platform_add_devices(sh03_devices, ARRAY_SIZE(sh03_devices));
+}
+device_initcall(sh03_devices_setup);
+
+static struct sh_machine_vector mv_sh03 __initmv = {
+	.mv_name		= "Interface (CTP/PCI-SH03)",
+	.mv_setup		= sh03_setup,
+	.mv_init_irq		= init_sh03_IRQ,
+};