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>

8 files changed, 493 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-footbridge/include/mach/debug-macro.S b/kernel/arch/arm/mach-footbridge/include/mach/debug-macro.S
new file mode 100644
index 000000000..02247f313
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/debug-macro.S
@@ -0,0 +1,42 @@
+/* arch/arm/mach-footbridge/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ *  Copyright (C) 1994-1999 Russell King
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * 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 <asm/hardware/dec21285.h>
+
+#include <mach/hardware.h>
+	/* For EBSA285 debugging */
+		.equ	dc21285_high, ARMCSR_BASE & 0xff000000
+		.equ	dc21285_low,  ARMCSR_BASE & 0x00ffffff
+
+		.macro	addruart, rp, rv, tmp
+		.if	dc21285_low
+		mov	\rp, #dc21285_low
+		.else
+		mov	\rp, #0
+		.endif
+		orr	\rv, \rp, #dc21285_high
+		orr	\rp, \rp, #0x42000000
+		.endm
+
+		.macro	senduart,rd,rx
+		str	\rd, [\rx, #0x160]	@ UARTDR
+		.endm
+
+		.macro	busyuart,rd,rx
+1001:		ldr	\rd, [\rx, #0x178]	@ UARTFLG
+		tst	\rd, #1 << 3
+		bne	1001b
+		.endm
+
+		.macro	waituart,rd,rx
+		.endm
diff --git a/kernel/arch/arm/mach-footbridge/include/mach/entry-macro.S b/kernel/arch/arm/mach-footbridge/include/mach/entry-macro.S
new file mode 100644
index 000000000..dabbd5c54
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/entry-macro.S
@@ -0,0 +1,107 @@
+/*
+ * arch/arm/mach-footbridge/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for footbridge-based platforms
+ *
+ * This file is licensed under  the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <asm/hardware/dec21285.h>
+
+		.equ	dc21285_high, ARMCSR_BASE & 0xff000000
+		.equ	dc21285_low, ARMCSR_BASE & 0x00ffffff
+
+		.macro  get_irqnr_preamble, base, tmp
+		mov	\base, #dc21285_high
+		.if	dc21285_low
+		orr	\base, \base, #dc21285_low
+		.endif
+		.endm
+
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+		ldr	\irqstat, [\base, #0x180]	@ get interrupts
+
+		mov	\irqnr, #IRQ_SDRAMPARITY
+		tst	\irqstat, #IRQ_MASK_SDRAMPARITY
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_UART_RX
+		movne	\irqnr, #IRQ_CONRX
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_DMA1
+		movne	\irqnr, #IRQ_DMA1
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_DMA2
+		movne	\irqnr, #IRQ_DMA2
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_IN0
+		movne	\irqnr, #IRQ_IN0
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_IN1
+		movne	\irqnr, #IRQ_IN1
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_IN2
+		movne	\irqnr, #IRQ_IN2
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_IN3
+		movne	\irqnr, #IRQ_IN3
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_PCI
+		movne	\irqnr, #IRQ_PCI
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_DOORBELLHOST
+		movne	\irqnr, #IRQ_DOORBELLHOST
+		bne     1001f
+
+		tst	\irqstat, #IRQ_MASK_I2OINPOST
+		movne	\irqnr, #IRQ_I2OINPOST
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_TIMER1
+		movne	\irqnr, #IRQ_TIMER1
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_TIMER2
+		movne	\irqnr, #IRQ_TIMER2
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_TIMER3
+		movne	\irqnr, #IRQ_TIMER3
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_UART_TX
+		movne	\irqnr, #IRQ_CONTX
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_PCI_ABORT
+		movne	\irqnr, #IRQ_PCI_ABORT
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_PCI_SERR
+		movne	\irqnr, #IRQ_PCI_SERR
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_DISCARD_TIMER
+		movne	\irqnr, #IRQ_DISCARD_TIMER
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_PCI_DPERR
+		movne	\irqnr, #IRQ_PCI_DPERR
+		bne	1001f
+
+		tst	\irqstat, #IRQ_MASK_PCI_PERR
+		movne	\irqnr, #IRQ_PCI_PERR
+1001:
+		.endm
+
diff --git a/kernel/arch/arm/mach-footbridge/include/mach/hardware.h b/kernel/arch/arm/mach-footbridge/include/mach/hardware.h
new file mode 100644
index 000000000..02f6d7a70
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/hardware.h
@@ -0,0 +1,99 @@
+/*
+ *  arch/arm/mach-footbridge/include/mach/hardware.h
+ *
+ *  Copyright (C) 1998-1999 Russell King.
+ *
+ * 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.
+ *
+ *  This file contains the hardware definitions of the EBSA-285.
+ */
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+/*   Virtual      Physical	Size
+ * 0xff800000	0x40000000	1MB	X-Bus
+ * 0xff000000	0x7c000000	1MB	PCI I/O space
+ * 0xfe000000	0x42000000	1MB	CSR
+ * 0xfd000000	0x78000000	1MB	Outbound write flush (not supported)
+ * 0xfc000000	0x79000000	1MB	PCI IACK/special space
+ * 0xfb000000	0x7a000000	16MB	PCI Config type 1
+ * 0xfa000000	0x7b000000	16MB	PCI Config type 0
+ * 0xf9000000	0x50000000	1MB	Cache flush
+ * 0xf0000000	0x80000000	16MB	ISA memory
+ */
+
+#ifdef CONFIG_MMU
+#define MMU_IO(a, b)	(a)
+#else
+#define MMU_IO(a, b)	(b)
+#endif
+
+#define XBUS_SIZE		0x00100000
+#define XBUS_BASE		MMU_IO(0xff800000, 0x40000000)
+
+#define ARMCSR_SIZE		0x00100000
+#define ARMCSR_BASE		MMU_IO(0xfe000000, 0x42000000)
+
+#define WFLUSH_SIZE		0x00100000
+#define WFLUSH_BASE		MMU_IO(0xfd000000, 0x78000000)
+
+#define PCIIACK_SIZE		0x00100000
+#define PCIIACK_BASE		MMU_IO(0xfc000000, 0x79000000)
+
+#define PCICFG1_SIZE		0x01000000
+#define PCICFG1_BASE		MMU_IO(0xfb000000, 0x7a000000)
+
+#define PCICFG0_SIZE		0x01000000
+#define PCICFG0_BASE		MMU_IO(0xfa000000, 0x7b000000)
+
+#define PCIMEM_SIZE		0x01000000
+#define PCIMEM_BASE		MMU_IO(0xf0000000, 0x80000000)
+
+#define XBUS_CS2		0x40012000
+
+#define XBUS_SWITCH		((volatile unsigned char *)(XBUS_BASE + 0x12000))
+#define XBUS_SWITCH_SWITCH	((*XBUS_SWITCH) & 15)
+#define XBUS_SWITCH_J17_13	((*XBUS_SWITCH) & (1 << 4))
+#define XBUS_SWITCH_J17_11	((*XBUS_SWITCH) & (1 << 5))
+#define XBUS_SWITCH_J17_9	((*XBUS_SWITCH) & (1 << 6))
+
+#define UNCACHEABLE_ADDR	(ARMCSR_BASE + 0x108)
+
+
+/* PIC irq control */
+#define PIC_LO			0x20
+#define PIC_MASK_LO		0x21
+#define PIC_HI			0xA0
+#define PIC_MASK_HI		0xA1
+
+/* GPIO pins */
+#define GPIO_CCLK		0x800
+#define GPIO_DSCLK		0x400
+#define GPIO_E2CLK		0x200
+#define GPIO_IOLOAD		0x100
+#define GPIO_RED_LED		0x080
+#define GPIO_WDTIMER		0x040
+#define GPIO_DATA		0x020
+#define GPIO_IOCLK		0x010
+#define GPIO_DONE		0x008
+#define GPIO_FAN		0x004
+#define GPIO_GREEN_LED		0x002
+#define GPIO_RESET		0x001
+
+/* CPLD pins */
+#define CPLD_DS_ENABLE		8
+#define CPLD_7111_DISABLE	4
+#define CPLD_UNMUTE		2
+#define CPLD_FLASH_WR_ENABLE	1
+
+#ifndef __ASSEMBLY__
+extern raw_spinlock_t nw_gpio_lock;
+extern void nw_gpio_modify_op(unsigned int mask, unsigned int set);
+extern void nw_gpio_modify_io(unsigned int mask, unsigned int in);
+extern unsigned int nw_gpio_read(void);
+extern void nw_cpld_modify(unsigned int mask, unsigned int set);
+#endif
+
+#endif
diff --git a/kernel/arch/arm/mach-footbridge/include/mach/io.h b/kernel/arch/arm/mach-footbridge/include/mach/io.h
new file mode 100644
index 000000000..aba46388c
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/io.h
@@ -0,0 +1,23 @@
+/*
+ *  arch/arm/mach-footbridge/include/mach/io.h
+ *
+ *  Copyright (C) 1997-1999 Russell King
+ *
+ * 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.
+ *
+ *  Modifications:
+ *   06-12-1997	RMK	Created.
+ *   07-04-1999	RMK	Major cleanup
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+/*
+ * Translation of various i/o addresses to host addresses for !CONFIG_MMU
+ */
+#define PCIO_BASE       0x7c000000
+#define __io(a)			((void __iomem *)(PCIO_BASE + (a)))
+
+#endif
diff --git a/kernel/arch/arm/mach-footbridge/include/mach/irqs.h b/kernel/arch/arm/mach-footbridge/include/mach/irqs.h
new file mode 100644
index 000000000..61c714c49
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/irqs.h
@@ -0,0 +1,96 @@
+/*
+ * arch/arm/mach-footbridge/include/mach/irqs.h
+ *
+ * Copyright (C) 1998 Russell King
+ * Copyright (C) 1998 Phil Blundell
+ *
+ * Changelog:
+ *  20-Jan-1998	RMK	Started merge of EBSA286, CATS and NetWinder
+ *  01-Feb-1999	PJB	ISA IRQs start at 0 not 16
+ */
+#include <asm/mach-types.h>
+
+#define NR_IRQS			36
+#define NR_DC21285_IRQS		16
+
+#define _ISA_IRQ(x)		(0 + (x))
+#define _ISA_INR(x)		((x) - 0)
+#define _DC21285_IRQ(x)		(16 + (x))
+#define _DC21285_INR(x)		((x) - 16)
+
+/*
+ * This is a list of all interrupts that the 21285
+ * can generate and we handle.
+ */
+#define IRQ_CONRX		_DC21285_IRQ(0)
+#define IRQ_CONTX		_DC21285_IRQ(1)
+#define IRQ_TIMER1		_DC21285_IRQ(2)
+#define IRQ_TIMER2		_DC21285_IRQ(3)
+#define IRQ_TIMER3		_DC21285_IRQ(4)
+#define IRQ_IN0			_DC21285_IRQ(5)
+#define IRQ_IN1			_DC21285_IRQ(6)
+#define IRQ_IN2			_DC21285_IRQ(7)
+#define IRQ_IN3			_DC21285_IRQ(8)
+#define IRQ_DOORBELLHOST	_DC21285_IRQ(9)
+#define IRQ_DMA1		_DC21285_IRQ(10)
+#define IRQ_DMA2		_DC21285_IRQ(11)
+#define IRQ_PCI			_DC21285_IRQ(12)
+#define IRQ_SDRAMPARITY		_DC21285_IRQ(13)
+#define IRQ_I2OINPOST		_DC21285_IRQ(14)
+#define IRQ_PCI_ABORT		_DC21285_IRQ(15)
+#define IRQ_PCI_SERR		_DC21285_IRQ(16)
+#define IRQ_DISCARD_TIMER	_DC21285_IRQ(17)
+#define IRQ_PCI_DPERR		_DC21285_IRQ(18)
+#define IRQ_PCI_PERR		_DC21285_IRQ(19)
+
+#define IRQ_ISA_TIMER		_ISA_IRQ(0)
+#define IRQ_ISA_KEYBOARD	_ISA_IRQ(1)
+#define IRQ_ISA_CASCADE		_ISA_IRQ(2)
+#define IRQ_ISA_UART2		_ISA_IRQ(3)
+#define IRQ_ISA_UART		_ISA_IRQ(4)
+#define IRQ_ISA_FLOPPY		_ISA_IRQ(6)
+#define IRQ_ISA_PRINTER		_ISA_IRQ(7)
+#define IRQ_ISA_RTC_ALARM	_ISA_IRQ(8)
+#define IRQ_ISA_2		_ISA_IRQ(9)
+#define IRQ_ISA_PS2MOUSE	_ISA_IRQ(12)
+#define IRQ_ISA_HARDDISK1	_ISA_IRQ(14)
+#define IRQ_ISA_HARDDISK2	_ISA_IRQ(15)
+
+#define IRQ_MASK_UART_RX	(1 << 2)
+#define IRQ_MASK_UART_TX	(1 << 3)
+#define IRQ_MASK_TIMER1		(1 << 4)
+#define IRQ_MASK_TIMER2		(1 << 5)
+#define IRQ_MASK_TIMER3		(1 << 6)
+#define IRQ_MASK_IN0		(1 << 8)
+#define IRQ_MASK_IN1		(1 << 9)
+#define IRQ_MASK_IN2		(1 << 10)
+#define IRQ_MASK_IN3		(1 << 11)
+#define IRQ_MASK_DOORBELLHOST	(1 << 15)
+#define IRQ_MASK_DMA1		(1 << 16)
+#define IRQ_MASK_DMA2		(1 << 17)
+#define IRQ_MASK_PCI		(1 << 18)
+#define IRQ_MASK_SDRAMPARITY	(1 << 24)
+#define IRQ_MASK_I2OINPOST	(1 << 25)
+#define IRQ_MASK_PCI_ABORT	((1 << 29) | (1 << 30))
+#define IRQ_MASK_PCI_SERR	(1 << 23)
+#define IRQ_MASK_DISCARD_TIMER	(1 << 27)
+#define IRQ_MASK_PCI_DPERR	(1 << 28)
+#define IRQ_MASK_PCI_PERR	(1 << 31)
+
+/*
+ * Netwinder interrupt allocations
+ */
+#define IRQ_NETWINDER_ETHER10	IRQ_IN0
+#define IRQ_NETWINDER_ETHER100	IRQ_IN1
+#define IRQ_NETWINDER_VIDCOMP	IRQ_IN2
+#define IRQ_NETWINDER_PS2MOUSE	_ISA_IRQ(5)
+#define IRQ_NETWINDER_IR	_ISA_IRQ(6)
+#define IRQ_NETWINDER_BUTTON	_ISA_IRQ(10)
+#define IRQ_NETWINDER_VGA	_ISA_IRQ(11)
+#define IRQ_NETWINDER_SOUND	_ISA_IRQ(12)
+
+#define I8042_KBD_IRQ	IRQ_ISA_KEYBOARD
+#define I8042_AUX_IRQ	(machine_is_netwinder() ? IRQ_NETWINDER_PS2MOUSE : IRQ_ISA_PS2MOUSE)
+#define IRQ_FLOPPYDISK	IRQ_ISA_FLOPPY
+
+#define irq_canonicalize(_i)	(((_i) == IRQ_ISA_CASCADE) ? IRQ_ISA_2 : _i)
diff --git a/kernel/arch/arm/mach-footbridge/include/mach/isa-dma.h b/kernel/arch/arm/mach-footbridge/include/mach/isa-dma.h
new file mode 100644
index 000000000..5bd4a0d33
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/isa-dma.h
@@ -0,0 +1,25 @@
+/*
+ *  arch/arm/mach-footbridge/include/mach/isa-dma.h
+ *
+ *  Architecture DMA routines
+ *
+ *  Copyright (C) 1998,1999 Russell King
+ *  Copyright (C) 1998,1999 Philip Blundell
+ */
+#ifndef __ASM_ARCH_DMA_H
+#define __ASM_ARCH_DMA_H
+
+/*
+ * The 21285 has two internal DMA channels; we call these 8 and 9.
+ * On CATS hardware we have an additional eight ISA dma channels
+ * numbered 0..7.
+ */
+#define _ISA_DMA(x)		(0+(x))
+#define _DC21285_DMA(x)		(8+(x))
+
+#define MAX_DMA_CHANNELS	10
+
+#define DMA_FLOPPY		_ISA_DMA(2)
+#define DMA_ISA_CASCADE		_ISA_DMA(4)
+
+#endif /* _ASM_ARCH_DMA_H */
diff --git a/kernel/arch/arm/mach-footbridge/include/mach/memory.h b/kernel/arch/arm/mach-footbridge/include/mach/memory.h
new file mode 100644
index 000000000..6f2ecccdf
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/memory.h
@@ -0,0 +1,64 @@
+/*
+ *  arch/arm/mach-footbridge/include/mach/memory.h
+ *
+ *  Copyright (C) 1996-1999 Russell King.
+ *
+ * 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.
+ *
+ *  Changelog:
+ *   20-Oct-1996 RMK	Created
+ *   31-Dec-1997 RMK	Fixed definitions to reduce warnings.
+ *   17-May-1998 DAG	Added __virt_to_bus and __bus_to_virt functions.
+ *   21-Nov-1998 RMK	Changed __virt_to_bus and __bus_to_virt to macros.
+ *   21-Mar-1999 RMK	Added PAGE_OFFSET for co285 architecture.
+ *			Renamed to memory.h
+ *			Moved PAGE_OFFSET and TASK_SIZE here
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+
+#if defined(CONFIG_FOOTBRIDGE_ADDIN)
+/*
+ * If we may be using add-in footbridge mode, then we must
+ * use the out-of-line translation that makes use of the
+ * PCI BAR
+ */
+#ifndef __ASSEMBLY__
+extern unsigned long __virt_to_bus(unsigned long);
+extern unsigned long __bus_to_virt(unsigned long);
+extern unsigned long __pfn_to_bus(unsigned long);
+extern unsigned long __bus_to_pfn(unsigned long);
+#endif
+#define __virt_to_bus	__virt_to_bus
+#define __bus_to_virt	__bus_to_virt
+
+#elif defined(CONFIG_FOOTBRIDGE_HOST)
+
+/*
+ * The footbridge is programmed to expose the system RAM at 0xe0000000.
+ * The requirement is that the RAM isn't placed at bus address 0, which
+ * would clash with VGA cards.
+ */
+#define BUS_OFFSET		0xe0000000
+#define __virt_to_bus(x)	((x) + (BUS_OFFSET - PAGE_OFFSET))
+#define __bus_to_virt(x)	((x) - (BUS_OFFSET - PAGE_OFFSET))
+#define __pfn_to_bus(x)		(__pfn_to_phys(x) + (BUS_OFFSET - PHYS_OFFSET))
+#define __bus_to_pfn(x)		__phys_to_pfn((x) - (BUS_OFFSET - PHYS_OFFSET))
+
+#else
+
+#error "Undefined footbridge mode"
+
+#endif
+
+/*
+ * Cache flushing area.
+ */
+#define FLUSH_BASE		0xf9000000
+
+#define FLUSH_BASE_PHYS		0x50000000
+
+#endif
diff --git a/kernel/arch/arm/mach-footbridge/include/mach/uncompress.h b/kernel/arch/arm/mach-footbridge/include/mach/uncompress.h
new file mode 100644
index 000000000..a69398c05
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/include/mach/uncompress.h
@@ -0,0 +1,37 @@
+/*
+ *  arch/arm/mach-footbridge/include/mach/uncompress.h
+ *
+ *  Copyright (C) 1996-1999 Russell King
+ *
+ * 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 <asm/mach-types.h>
+
+/*
+ * Note! This could cause problems on the NetWinder
+ */
+#define DC21285_BASE ((volatile unsigned int *)0x42000160)
+#define SER0_BASE    ((volatile unsigned char *)0x7c0003f8)
+
+static inline void putc(char c)
+{
+	if (machine_is_netwinder()) {
+		while ((SER0_BASE[5] & 0x60) != 0x60)
+			barrier();
+		SER0_BASE[0] = c;
+	} else {
+		while (DC21285_BASE[6] & 8);
+		DC21285_BASE[0] = c;
+	}
+}
+
+static inline void flush(void)
+{
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()