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, 191 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-mmp/pxa910.c b/kernel/arch/arm/mach-mmp/pxa910.c
new file mode 100644
index 000000000..eb57ee196
--- /dev/null
+++ b/kernel/arch/arm/mach-mmp/pxa910.c
@@ -0,0 +1,191 @@
+/*
+ *  linux/arch/arm/mach-mmp/pxa910.c
+ *
+ *  Code specific to PXA910
+ *
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqchip/mmp.h>
+#include <linux/platform_device.h>
+
+#include <asm/hardware/cache-tauros2.h>
+#include <asm/mach/time.h>
+#include <mach/addr-map.h>
+#include <mach/regs-apbc.h>
+#include <mach/cputype.h>
+#include <mach/irqs.h>
+#include <mach/dma.h>
+#include <mach/mfp.h>
+#include <mach/devices.h>
+#include <mach/pm-pxa910.h>
+#include <mach/pxa910.h>
+
+#include "common.h"
+
+#define MFPR_VIRT_BASE	(APB_VIRT_BASE + 0x1e000)
+
+static struct mfp_addr_map pxa910_mfp_addr_map[] __initdata =
+{
+	MFP_ADDR_X(GPIO0, GPIO54, 0xdc),
+	MFP_ADDR_X(GPIO67, GPIO98, 0x1b8),
+	MFP_ADDR_X(GPIO100, GPIO109, 0x238),
+
+	MFP_ADDR(GPIO123, 0xcc),
+	MFP_ADDR(GPIO124, 0xd0),
+
+	MFP_ADDR(DF_IO0, 0x40),
+	MFP_ADDR(DF_IO1, 0x3c),
+	MFP_ADDR(DF_IO2, 0x38),
+	MFP_ADDR(DF_IO3, 0x34),
+	MFP_ADDR(DF_IO4, 0x30),
+	MFP_ADDR(DF_IO5, 0x2c),
+	MFP_ADDR(DF_IO6, 0x28),
+	MFP_ADDR(DF_IO7, 0x24),
+	MFP_ADDR(DF_IO8, 0x20),
+	MFP_ADDR(DF_IO9, 0x1c),
+	MFP_ADDR(DF_IO10, 0x18),
+	MFP_ADDR(DF_IO11, 0x14),
+	MFP_ADDR(DF_IO12, 0x10),
+	MFP_ADDR(DF_IO13, 0xc),
+	MFP_ADDR(DF_IO14, 0x8),
+	MFP_ADDR(DF_IO15, 0x4),
+
+	MFP_ADDR(DF_nCS0_SM_nCS2, 0x44),
+	MFP_ADDR(DF_nCS1_SM_nCS3, 0x48),
+	MFP_ADDR(SM_nCS0, 0x4c),
+	MFP_ADDR(SM_nCS1, 0x50),
+	MFP_ADDR(DF_WEn, 0x54),
+	MFP_ADDR(DF_REn, 0x58),
+	MFP_ADDR(DF_CLE_SM_OEn, 0x5c),
+	MFP_ADDR(DF_ALE_SM_WEn, 0x60),
+	MFP_ADDR(SM_SCLK, 0x64),
+	MFP_ADDR(DF_RDY0, 0x68),
+	MFP_ADDR(SM_BE0, 0x6c),
+	MFP_ADDR(SM_BE1, 0x70),
+	MFP_ADDR(SM_ADV, 0x74),
+	MFP_ADDR(DF_RDY1, 0x78),
+	MFP_ADDR(SM_ADVMUX, 0x7c),
+	MFP_ADDR(SM_RDY, 0x80),
+
+	MFP_ADDR_X(MMC1_DAT7, MMC1_WP, 0x84),
+
+	MFP_ADDR_END,
+};
+
+void __init pxa910_init_irq(void)
+{
+	icu_init_irq();
+#ifdef CONFIG_PM
+	icu_irq_chip.irq_set_wake = pxa910_set_wake;
+#endif
+}
+
+static int __init pxa910_init(void)
+{
+	if (cpu_is_pxa910()) {
+#ifdef CONFIG_CACHE_TAUROS2
+		tauros2_init(0);
+#endif
+		mfp_init_base(MFPR_VIRT_BASE);
+		mfp_init_addr(pxa910_mfp_addr_map);
+		pxa_init_dma(IRQ_PXA910_DMA_INT0, 32);
+		pxa910_clk_init();
+	}
+
+	return 0;
+}
+postcore_initcall(pxa910_init);
+
+/* system timer - clock enabled, 3.25MHz */
+#define TIMER_CLK_RST	(APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
+#define APBC_TIMERS	APBC_REG(0x34)
+
+void __init pxa910_timer_init(void)
+{
+	/* reset and configure */
+	__raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);
+	__raw_writel(TIMER_CLK_RST, APBC_TIMERS);
+
+	timer_init(IRQ_PXA910_AP1_TIMER1);
+}
+
+/* on-chip devices */
+
+/* NOTE: there are totally 3 UARTs on PXA910:
+ *
+ *   UART1   - Slow UART (can be used both by AP and CP)
+ *   UART2/3 - Fast UART
+ *
+ * To be backward compatible with the legacy FFUART/BTUART/STUART sequence,
+ * they are re-ordered as:
+ *
+ *   pxa910_device_uart1 - UART2 as FFUART
+ *   pxa910_device_uart2 - UART3 as BTUART
+ *
+ * UART1 is not used by AP for the moment.
+ */
+PXA910_DEVICE(uart1, "pxa2xx-uart", 0, UART2, 0xd4017000, 0x30, 21, 22);
+PXA910_DEVICE(uart2, "pxa2xx-uart", 1, UART3, 0xd4018000, 0x30, 23, 24);
+PXA910_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
+PXA910_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
+PXA910_DEVICE(pwm1, "pxa910-pwm", 0, NONE, 0xd401a000, 0x10);
+PXA910_DEVICE(pwm2, "pxa910-pwm", 1, NONE, 0xd401a400, 0x10);
+PXA910_DEVICE(pwm3, "pxa910-pwm", 2, NONE, 0xd401a800, 0x10);
+PXA910_DEVICE(pwm4, "pxa910-pwm", 3, NONE, 0xd401ac00, 0x10);
+PXA910_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
+PXA910_DEVICE(disp, "mmp-disp", 0, LCD, 0xd420b000, 0x1ec);
+PXA910_DEVICE(fb, "mmp-fb", -1, NONE, 0, 0);
+PXA910_DEVICE(panel, "tpo-hvga", -1, NONE, 0, 0);
+
+struct resource pxa910_resource_gpio[] = {
+	{
+		.start	= 0xd4019000,
+		.end	= 0xd4019fff,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		.start	= IRQ_PXA910_AP_GPIO,
+		.end	= IRQ_PXA910_AP_GPIO,
+		.name	= "gpio_mux",
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device pxa910_device_gpio = {
+	.name		= "mmp-gpio",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(pxa910_resource_gpio),
+	.resource	= pxa910_resource_gpio,
+};
+
+static struct resource pxa910_resource_rtc[] = {
+	{
+		.start	= 0xd4010000,
+		.end	= 0xd401003f,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		.start	= IRQ_PXA910_RTC_INT,
+		.end	= IRQ_PXA910_RTC_INT,
+		.name	= "rtc 1Hz",
+		.flags	= IORESOURCE_IRQ,
+	}, {
+		.start	= IRQ_PXA910_RTC_ALARM,
+		.end	= IRQ_PXA910_RTC_ALARM,
+		.name	= "rtc alarm",
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device pxa910_device_rtc = {
+	.name		= "sa1100-rtc",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(pxa910_resource_rtc),
+	.resource	= pxa910_resource_rtc,
+};