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>

11 files changed, 271 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-iop32x/include/mach/adma.h b/kernel/arch/arm/mach-iop32x/include/mach/adma.h
new file mode 100644
index 000000000..5ed92037d
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/adma.h
@@ -0,0 +1,5 @@
+#ifndef IOP32X_ADMA_H
+#define IOP32X_ADMA_H
+#include <asm/hardware/iop3xx-adma.h>
+#endif
+
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/entry-macro.S b/kernel/arch/arm/mach-iop32x/include/mach/entry-macro.S
new file mode 100644
index 000000000..ea13ae02d
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/entry-macro.S
@@ -0,0 +1,33 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for IOP32x-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/iop32x.h>
+
+	.macro get_irqnr_preamble, base, tmp
+	mrc	p15, 0, \tmp, c15, c1, 0
+	orr	\tmp, \tmp, #(1 << 6)
+	mcr	p15, 0, \tmp, c15, c1, 0	@ Enable cp6 access
+	mrc	p15, 0, \tmp, c15, c1, 0
+	mov	\tmp, \tmp
+	sub	pc, pc, #4			@ cp_wait
+	.endm
+
+	.macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+	mrc     p6, 0, \irqstat, c8, c0, 0	@ Read IINTSRC
+	cmp     \irqstat, #0
+	clzne   \irqnr, \irqstat
+	rsbne   \irqnr, \irqnr, #31
+	.endm
+
+	.macro arch_ret_to_user, tmp1, tmp2
+	mrc	p15, 0, \tmp1, c15, c1, 0
+	ands	\tmp2, \tmp1, #(1 << 6)
+	bicne	\tmp1, \tmp1, #(1 << 6)
+	mcrne	p15, 0, \tmp1, c15, c1, 0	@ Disable cp6 access
+	.endm
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/glantank.h b/kernel/arch/arm/mach-iop32x/include/mach/glantank.h
new file mode 100644
index 000000000..958eb91c0
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/glantank.h
@@ -0,0 +1,13 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/glantank.h
+ *
+ * IO-Data GLAN Tank board registers
+ */
+
+#ifndef __GLANTANK_H
+#define __GLANTANK_H
+
+#define GLANTANK_UART		0xfe800000	/* UART */
+
+
+#endif
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/hardware.h b/kernel/arch/arm/mach-iop32x/include/mach/hardware.h
new file mode 100644
index 000000000..48cb1b20b
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/hardware.h
@@ -0,0 +1,41 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/hardware.h
+ */
+
+#ifndef __HARDWARE_H
+#define __HARDWARE_H
+
+#include <asm/types.h>
+
+/*
+ * Note about PCI IO space mappings
+ *
+ * To make IO space accesses efficient, we store virtual addresses in
+ * the IO resources.
+ *
+ * The PCI IO space is located at virtual 0xfe000000 from physical
+ * 0x90000000. The PCI BARs must be programmed with physical addresses,
+ * but when we read them, we convert them to virtual addresses. See
+ * arch/arm/plat-iop/pci.c.
+ */
+
+#ifndef __ASSEMBLY__
+void iop32x_init_irq(void);
+#endif
+
+
+/*
+ * Generic chipset bits
+ */
+#include "iop32x.h"
+
+/*
+ * Board specific bits
+ */
+#include "glantank.h"
+#include "iq80321.h"
+#include "iq31244.h"
+#include "n2100.h"
+
+
+#endif
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/iop32x.h b/kernel/arch/arm/mach-iop32x/include/mach/iop32x.h
new file mode 100644
index 000000000..56ec864ec
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/iop32x.h
@@ -0,0 +1,34 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/iop32x.h
+ *
+ * Intel IOP32X Chip definitions
+ *
+ * Author: Rory Bolt <rorybolt@pacbell.net>
+ * Copyright (C) 2002 Rory Bolt
+ * Copyright (C) 2004 Intel Corp.
+ *
+ * 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.
+ */
+
+#ifndef __IOP32X_H
+#define __IOP32X_H
+
+/*
+ * Peripherals that are shared between the iop32x and iop33x but
+ * located at different addresses.
+ */
+#define IOP3XX_TIMER_REG(reg)	(IOP3XX_PERIPHERAL_VIRT_BASE + 0x07e0 + (reg))
+
+#include <asm/hardware/iop3xx.h>
+
+/* ATU Parameters
+ * set up a 1:1 bus to physical ram relationship
+ * w/ physical ram on top of pci in the memory map
+ */
+#define IOP32X_MAX_RAM_SIZE            0x40000000UL
+#define IOP3XX_MAX_RAM_SIZE            IOP32X_MAX_RAM_SIZE
+#define IOP3XX_PCI_LOWER_MEM_BA        0x80000000
+
+#endif
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/iq31244.h b/kernel/arch/arm/mach-iop32x/include/mach/iq31244.h
new file mode 100644
index 000000000..6b6b369e7
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/iq31244.h
@@ -0,0 +1,17 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/iq31244.h
+ *
+ * Intel IQ31244 evaluation board registers
+ */
+
+#ifndef __IQ31244_H
+#define __IQ31244_H
+
+#define IQ31244_UART		0xfe800000	/* UART #1 */
+#define IQ31244_7SEG_1		0xfe840000	/* 7-Segment MSB */
+#define IQ31244_7SEG_0		0xfe850000	/* 7-Segment LSB (WO) */
+#define IQ31244_ROTARY_SW	0xfe8d0000	/* Rotary Switch */
+#define IQ31244_BATT_STAT	0xfe8f0000	/* Battery Status */
+
+
+#endif
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/iq80321.h b/kernel/arch/arm/mach-iop32x/include/mach/iq80321.h
new file mode 100644
index 000000000..498819b73
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/iq80321.h
@@ -0,0 +1,17 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/iq80321.h
+ *
+ * Intel IQ80321 evaluation board registers
+ */
+
+#ifndef __IQ80321_H
+#define __IQ80321_H
+
+#define IQ80321_UART		0xfe800000	/* UART #1 */
+#define IQ80321_7SEG_1		0xfe840000	/* 7-Segment MSB */
+#define IQ80321_7SEG_0		0xfe850000	/* 7-Segment LSB (WO) */
+#define IQ80321_ROTARY_SW	0xfe8d0000	/* Rotary Switch */
+#define IQ80321_BATT_STAT	0xfe8f0000	/* Battery Status */
+
+
+#endif
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/irqs.h b/kernel/arch/arm/mach-iop32x/include/mach/irqs.h
new file mode 100644
index 000000000..33573e099
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/irqs.h
@@ -0,0 +1,50 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/irqs.h
+ *
+ * Author:	Rory Bolt <rorybolt@pacbell.net>
+ * Copyright:	(C) 2002 Rory Bolt
+ *
+ * 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.
+ */
+
+#ifndef __IRQS_H
+#define __IRQS_H
+
+/*
+ * IOP80321 chipset interrupts
+ */
+#define IRQ_IOP32X_DMA0_EOT	0
+#define IRQ_IOP32X_DMA0_EOC	1
+#define IRQ_IOP32X_DMA1_EOT	2
+#define IRQ_IOP32X_DMA1_EOC	3
+#define IRQ_IOP32X_AA_EOT	6
+#define IRQ_IOP32X_AA_EOC	7
+#define IRQ_IOP32X_CORE_PMON	8
+#define IRQ_IOP32X_TIMER0	9
+#define IRQ_IOP32X_TIMER1	10
+#define IRQ_IOP32X_I2C_0	11
+#define IRQ_IOP32X_I2C_1	12
+#define IRQ_IOP32X_MESSAGING	13
+#define IRQ_IOP32X_ATU_BIST	14
+#define IRQ_IOP32X_PERFMON	15
+#define IRQ_IOP32X_CORE_PMU	16
+#define IRQ_IOP32X_BIU_ERR	17
+#define IRQ_IOP32X_ATU_ERR	18
+#define IRQ_IOP32X_MCU_ERR	19
+#define IRQ_IOP32X_DMA0_ERR	20
+#define IRQ_IOP32X_DMA1_ERR	21
+#define IRQ_IOP32X_AA_ERR	23
+#define IRQ_IOP32X_MSG_ERR	24
+#define IRQ_IOP32X_SSP		25
+#define IRQ_IOP32X_XINT0	27
+#define IRQ_IOP32X_XINT1	28
+#define IRQ_IOP32X_XINT2	29
+#define IRQ_IOP32X_XINT3	30
+#define IRQ_IOP32X_HPI		31
+
+#define NR_IRQS			32
+
+
+#endif
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/n2100.h b/kernel/arch/arm/mach-iop32x/include/mach/n2100.h
new file mode 100644
index 000000000..40b8a532b
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/n2100.h
@@ -0,0 +1,19 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/n2100.h
+ *
+ * Thecus N2100 board registers
+ */
+
+#ifndef __N2100_H
+#define __N2100_H
+
+#define N2100_UART		0xfe800000	/* UART */
+
+#define N2100_COPY_BUTTON	IOP3XX_GPIO_LINE(0)
+#define N2100_PCA9532_RESET	IOP3XX_GPIO_LINE(2)
+#define N2100_RESET_BUTTON	IOP3XX_GPIO_LINE(3)
+#define N2100_HARDWARE_RESET	IOP3XX_GPIO_LINE(4)
+#define N2100_POWER_BUTTON	IOP3XX_GPIO_LINE(5)
+
+
+#endif
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/time.h b/kernel/arch/arm/mach-iop32x/include/mach/time.h
new file mode 100644
index 000000000..0f28c9949
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/time.h
@@ -0,0 +1,4 @@
+#ifndef _IOP32X_TIME_H_
+#define _IOP32X_TIME_H_
+#define IRQ_IOP_TIMER0 IRQ_IOP32X_TIMER0
+#endif
diff --git a/kernel/arch/arm/mach-iop32x/include/mach/uncompress.h b/kernel/arch/arm/mach-iop32x/include/mach/uncompress.h
new file mode 100644
index 000000000..b3d45fd36
--- /dev/null
+++ b/kernel/arch/arm/mach-iop32x/include/mach/uncompress.h
@@ -0,0 +1,38 @@
+/*
+ * arch/arm/mach-iop32x/include/mach/uncompress.h
+ */
+
+#include <asm/types.h>
+#include <asm/mach-types.h>
+#include <linux/serial_reg.h>
+#include <mach/hardware.h>
+
+volatile u8 *uart_base;
+
+#define TX_DONE		(UART_LSR_TEMT | UART_LSR_THRE)
+
+static inline void putc(char c)
+{
+	while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
+		barrier();
+	uart_base[UART_TX] = c;
+}
+
+static inline void flush(void)
+{
+}
+
+static __inline__ void __arch_decomp_setup(unsigned long arch_id)
+{
+	if (machine_is_iq80321())
+		uart_base = (volatile u8 *)IQ80321_UART;
+	else if (machine_is_iq31244() || machine_is_em7210())
+		uart_base = (volatile u8 *)IQ31244_UART;
+	else
+		uart_base = (volatile u8 *)0xfe800000;
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()	__arch_decomp_setup(arch_id)