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>

12 files changed, 1129 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-ebsa110/Makefile b/kernel/arch/arm/mach-ebsa110/Makefile
new file mode 100644
index 000000000..a7d68c13c
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the linux kernel.
+#
+
+# Object file lists.
+
+obj-y			:= core.o io.o leds.o
diff --git a/kernel/arch/arm/mach-ebsa110/Makefile.boot b/kernel/arch/arm/mach-ebsa110/Makefile.boot
new file mode 100644
index 000000000..83cf07c38
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/Makefile.boot
@@ -0,0 +1,4 @@
+   zreladdr-y	+= 0x00008000
+params_phys-y	:= 0x00000400
+initrd_phys-y	:= 0x00800000
+
diff --git a/kernel/arch/arm/mach-ebsa110/core.c b/kernel/arch/arm/mach-ebsa110/core.c
new file mode 100644
index 000000000..8254e716b
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/core.c
@@ -0,0 +1,329 @@
+/*
+ *  linux/arch/arm/mach-ebsa110/core.c
+ *
+ *  Copyright (C) 1998-2001 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.
+ *
+ *  Extra MM routines for the EBSA-110 architecture
+ */
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/serial_8250.h>
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/system_misc.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/map.h>
+
+#include <asm/mach/time.h>
+
+#include "core.h"
+
+static void ebsa110_mask_irq(struct irq_data *d)
+{
+	__raw_writeb(1 << d->irq, IRQ_MCLR);
+}
+
+static void ebsa110_unmask_irq(struct irq_data *d)
+{
+	__raw_writeb(1 << d->irq, IRQ_MSET);
+}
+
+static struct irq_chip ebsa110_irq_chip = {
+	.irq_ack	= ebsa110_mask_irq,
+	.irq_mask	= ebsa110_mask_irq,
+	.irq_unmask	= ebsa110_unmask_irq,
+};
+ 
+static void __init ebsa110_init_irq(void)
+{
+	unsigned long flags;
+	unsigned int irq;
+
+	local_irq_save(flags);
+	__raw_writeb(0xff, IRQ_MCLR);
+	__raw_writeb(0x55, IRQ_MSET);
+	__raw_writeb(0x00, IRQ_MSET);
+	if (__raw_readb(IRQ_MASK) != 0x55)
+		while (1);
+	__raw_writeb(0xff, IRQ_MCLR);	/* clear all interrupt enables */
+	local_irq_restore(flags);
+
+	for (irq = 0; irq < NR_IRQS; irq++) {
+		irq_set_chip_and_handler(irq, &ebsa110_irq_chip,
+					 handle_level_irq);
+		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+	}
+}
+
+static struct map_desc ebsa110_io_desc[] __initdata = {
+	/*
+	 * sparse external-decode ISAIO space
+	 */
+	{	/* IRQ_STAT/IRQ_MCLR */
+		.virtual	= (unsigned long)IRQ_STAT,
+		.pfn		= __phys_to_pfn(TRICK4_PHYS),
+		.length		= TRICK4_SIZE,
+		.type		= MT_DEVICE
+	}, {	/* IRQ_MASK/IRQ_MSET */
+		.virtual	= (unsigned long)IRQ_MASK,
+		.pfn		= __phys_to_pfn(TRICK3_PHYS),
+		.length		= TRICK3_SIZE,
+		.type		= MT_DEVICE
+	}, {	/* SOFT_BASE */
+		.virtual	= (unsigned long)SOFT_BASE,
+		.pfn		= __phys_to_pfn(TRICK1_PHYS),
+		.length		= TRICK1_SIZE,
+		.type		= MT_DEVICE
+	}, {	/* PIT_BASE */
+		.virtual	= (unsigned long)PIT_BASE,
+		.pfn		= __phys_to_pfn(TRICK0_PHYS),
+		.length		= TRICK0_SIZE,
+		.type		= MT_DEVICE
+	},
+
+	/*
+	 * self-decode ISAIO space
+	 */
+	{
+		.virtual	= ISAIO_BASE,
+		.pfn		= __phys_to_pfn(ISAIO_PHYS),
+		.length		= ISAIO_SIZE,
+		.type		= MT_DEVICE
+	}, {
+		.virtual	= ISAMEM_BASE,
+		.pfn		= __phys_to_pfn(ISAMEM_PHYS),
+		.length		= ISAMEM_SIZE,
+		.type		= MT_DEVICE
+	}
+};
+
+static void __init ebsa110_map_io(void)
+{
+	iotable_init(ebsa110_io_desc, ARRAY_SIZE(ebsa110_io_desc));
+}
+
+static void __iomem *ebsa110_ioremap_caller(phys_addr_t cookie, size_t size,
+					    unsigned int flags, void *caller)
+{
+	return (void __iomem *)cookie;
+}
+
+static void ebsa110_iounmap(volatile void __iomem *io_addr)
+{}
+
+static void __init ebsa110_init_early(void)
+{
+	arch_ioremap_caller = ebsa110_ioremap_caller;
+	arch_iounmap = ebsa110_iounmap;
+}
+
+#define PIT_CTRL		(PIT_BASE + 0x0d)
+#define PIT_T2			(PIT_BASE + 0x09)
+#define PIT_T1			(PIT_BASE + 0x05)
+#define PIT_T0			(PIT_BASE + 0x01)
+
+/*
+ * This is the rate at which your MCLK signal toggles (in Hz)
+ * This was measured on a 10 digit frequency counter sampling
+ * over 1 second.
+ */
+#define MCLK	47894000
+
+/*
+ * This is the rate at which the PIT timers get clocked
+ */
+#define CLKBY7	(MCLK / 7)
+
+/*
+ * This is the counter value.  We tick at 200Hz on this platform.
+ */
+#define COUNT	((CLKBY7 + (HZ / 2)) / HZ)
+
+/*
+ * Get the time offset from the system PIT.  Note that if we have missed an
+ * interrupt, then the PIT counter will roll over (ie, be negative).
+ * This actually works out to be convenient.
+ */
+static u32 ebsa110_gettimeoffset(void)
+{
+	unsigned long offset, count;
+
+	__raw_writeb(0x40, PIT_CTRL);
+	count = __raw_readb(PIT_T1);
+	count |= __raw_readb(PIT_T1) << 8;
+
+	/*
+	 * If count > COUNT, make the number negative.
+	 */
+	if (count > COUNT)
+		count |= 0xffff0000;
+
+	offset = COUNT;
+	offset -= count;
+
+	/*
+	 * `offset' is in units of timer counts.  Convert
+	 * offset to units of microseconds.
+	 */
+	offset = offset * (1000000 / HZ) / COUNT;
+
+	return offset * 1000;
+}
+
+static irqreturn_t
+ebsa110_timer_interrupt(int irq, void *dev_id)
+{
+	u32 count;
+
+	/* latch and read timer 1 */
+	__raw_writeb(0x40, PIT_CTRL);
+	count = __raw_readb(PIT_T1);
+	count |= __raw_readb(PIT_T1) << 8;
+
+	count += COUNT;
+
+	__raw_writeb(count & 0xff, PIT_T1);
+	__raw_writeb(count >> 8, PIT_T1);
+
+	timer_tick();
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction ebsa110_timer_irq = {
+	.name		= "EBSA110 Timer Tick",
+	.flags		= IRQF_TIMER | IRQF_IRQPOLL,
+	.handler	= ebsa110_timer_interrupt,
+};
+
+/*
+ * Set up timer interrupt.
+ */
+void __init ebsa110_timer_init(void)
+{
+	arch_gettimeoffset = ebsa110_gettimeoffset;
+
+	/*
+	 * Timer 1, mode 2, LSB/MSB
+	 */
+	__raw_writeb(0x70, PIT_CTRL);
+	__raw_writeb(COUNT & 0xff, PIT_T1);
+	__raw_writeb(COUNT >> 8, PIT_T1);
+
+	setup_irq(IRQ_EBSA110_TIMER0, &ebsa110_timer_irq);
+}
+
+static struct plat_serial8250_port serial_platform_data[] = {
+	{
+		.iobase		= 0x3f8,
+		.irq		= 1,
+		.uartclk	= 1843200,
+		.regshift	= 0,
+		.iotype		= UPIO_PORT,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+	},
+	{
+		.iobase		= 0x2f8,
+		.irq		= 2,
+		.uartclk	= 1843200,
+		.regshift	= 0,
+		.iotype		= UPIO_PORT,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+	},
+	{ },
+};
+
+static struct platform_device serial_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= serial_platform_data,
+	},
+};
+
+static struct resource am79c961_resources[] = {
+	{
+		.start		= 0x220,
+		.end		= 0x238,
+		.flags		= IORESOURCE_IO,
+	}, {
+		.start		= IRQ_EBSA110_ETHERNET,
+		.end		= IRQ_EBSA110_ETHERNET,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device am79c961_device = {
+	.name			= "am79c961",
+	.id			= -1,
+	.num_resources		= ARRAY_SIZE(am79c961_resources),
+	.resource		= am79c961_resources,
+};
+
+static struct platform_device *ebsa110_devices[] = {
+	&serial_device,
+	&am79c961_device,
+};
+
+/*
+ * EBSA110 idling methodology:
+ *
+ * We can not execute the "wait for interrupt" instruction since that
+ * will stop our MCLK signal (which provides the clock for the glue
+ * logic, and therefore the timer interrupt).
+ *
+ * Instead, we spin, polling the IRQ_STAT register for the occurrence
+ * of any interrupt with core clock down to the memory clock.
+ */
+static void ebsa110_idle(void)
+{
+	const char *irq_stat = (char *)0xff000000;
+
+	/* disable clock switching */
+	asm volatile ("mcr p15, 0, ip, c15, c2, 2" : : : "cc");
+
+	/* wait for an interrupt to occur */
+	while (!*irq_stat);
+
+	/* enable clock switching */
+	asm volatile ("mcr p15, 0, ip, c15, c1, 2" : : : "cc");
+}
+
+static int __init ebsa110_init(void)
+{
+	arm_pm_idle = ebsa110_idle;
+	return platform_add_devices(ebsa110_devices, ARRAY_SIZE(ebsa110_devices));
+}
+
+arch_initcall(ebsa110_init);
+
+static void ebsa110_restart(enum reboot_mode mode, const char *cmd)
+{
+	soft_restart(0x80000000);
+}
+
+MACHINE_START(EBSA110, "EBSA110")
+	/* Maintainer: Russell King */
+	.atag_offset	= 0x400,
+	.reserve_lp0	= 1,
+	.reserve_lp2	= 1,
+	.map_io		= ebsa110_map_io,
+	.init_early	= ebsa110_init_early,
+	.init_irq	= ebsa110_init_irq,
+	.init_time	= ebsa110_timer_init,
+	.restart	= ebsa110_restart,
+MACHINE_END
diff --git a/kernel/arch/arm/mach-ebsa110/core.h b/kernel/arch/arm/mach-ebsa110/core.h
new file mode 100644
index 000000000..afe137ee1
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/core.h
@@ -0,0 +1,41 @@
+/*
+ *  Copyright (C) 1996-2000 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 core hardware definitions of the EBSA-110.
+ */
+#ifndef CORE_H
+#define CORE_H
+
+/* Physical addresses/sizes */
+#define ISAMEM_PHYS		0xe0000000
+#define ISAMEM_SIZE		0x10000000
+
+#define ISAIO_PHYS		0xf0000000
+#define ISAIO_SIZE		PGDIR_SIZE
+
+#define TRICK0_PHYS		0xf2000000
+#define TRICK0_SIZE		PGDIR_SIZE
+#define TRICK1_PHYS		0xf2400000
+#define TRICK1_SIZE		PGDIR_SIZE
+#define TRICK2_PHYS		0xf2800000
+#define TRICK3_PHYS		0xf2c00000
+#define TRICK3_SIZE		PGDIR_SIZE
+#define TRICK4_PHYS		0xf3000000
+#define TRICK4_SIZE		PGDIR_SIZE
+#define TRICK5_PHYS		0xf3400000
+#define TRICK6_PHYS		0xf3800000
+#define TRICK7_PHYS		0xf3c00000
+
+/* Virtual addresses */
+#define PIT_BASE		IOMEM(0xfc000000)	/* trick 0 */
+#define SOFT_BASE		IOMEM(0xfd000000)	/* trick 1 */
+#define IRQ_MASK		IOMEM(0xfe000000)	/* trick 3 - read */
+#define IRQ_MSET		IOMEM(0xfe000000)	/* trick 3 - write */
+#define IRQ_STAT		IOMEM(0xff000000)	/* trick 4 - read */
+#define IRQ_MCLR		IOMEM(0xff000000)	/* trick 4 - write */
+
+#endif
diff --git a/kernel/arch/arm/mach-ebsa110/include/mach/entry-macro.S b/kernel/arch/arm/mach-ebsa110/include/mach/entry-macro.S
new file mode 100644
index 000000000..14b110de7
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/include/mach/entry-macro.S
@@ -0,0 +1,33 @@
+/*
+ * arch/arm/mach-ebsa110/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for ebsa110 platform.
+ *
+ * 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.
+ */
+
+
+
+#define IRQ_STAT		0xff000000	/* read */
+
+	.macro  get_irqnr_preamble, base, tmp
+	mov	\base, #IRQ_STAT
+	.endm
+
+	.macro	get_irqnr_and_base, irqnr, stat, base, tmp
+	ldrb	\stat, [\base]			@ get interrupts
+	mov	\irqnr, #0
+	tst	\stat, #15
+	addeq	\irqnr, \irqnr, #4
+	moveq	\stat, \stat, lsr #4
+	tst	\stat, #3
+	addeq	\irqnr, \irqnr, #2
+	moveq	\stat, \stat, lsr #2
+	tst	\stat, #1
+	addeq	\irqnr, \irqnr, #1
+	moveq	\stat, \stat, lsr #1
+	tst	\stat, #1			@ bit 0 should be set
+	.endm
+
diff --git a/kernel/arch/arm/mach-ebsa110/include/mach/hardware.h b/kernel/arch/arm/mach-ebsa110/include/mach/hardware.h
new file mode 100644
index 000000000..f4e5407bd
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/include/mach/hardware.h
@@ -0,0 +1,24 @@
+/*
+ *  arch/arm/mach-ebsa110/include/mach/hardware.h
+ *
+ *  Copyright (C) 1996-2000 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-110.
+ */
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#define ISAMEM_BASE		0xe0000000
+#define ISAIO_BASE		0xf0000000
+
+/*
+ * RAM definitions
+ */
+#define UNCACHEABLE_ADDR	0xff000000	/* IRQ_STAT */
+
+#endif
+
diff --git a/kernel/arch/arm/mach-ebsa110/include/mach/io.h b/kernel/arch/arm/mach-ebsa110/include/mach/io.h
new file mode 100644
index 000000000..69975784a
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/include/mach/io.h
@@ -0,0 +1,92 @@
+/*
+ *  arch/arm/mach-ebsa110/include/mach/io.h
+ *
+ *  Copyright (C) 1997,1998 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-Dec-1997	RMK	Created.
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+u8 __inb8(unsigned int port);
+void __outb8(u8  val, unsigned int port);
+
+u8 __inb16(unsigned int port);
+void __outb16(u8  val, unsigned int port);
+
+u16 __inw(unsigned int port);
+void __outw(u16 val, unsigned int port);
+
+u32 __inl(unsigned int port);
+void __outl(u32 val, unsigned int port);
+
+u8  __readb(const volatile void __iomem *addr);
+u16 __readw(const volatile void __iomem *addr);
+u32 __readl(const volatile void __iomem *addr);
+
+void __writeb(u8  val, volatile void __iomem *addr);
+void __writew(u16 val, volatile void __iomem *addr);
+void __writel(u32 val, volatile void __iomem *addr);
+
+/*
+ * Argh, someone forgot the IOCS16 line.  We therefore have to handle
+ * the byte stearing by selecting the correct byte IO functions here.
+ */
+#ifdef ISA_SIXTEEN_BIT_PERIPHERAL
+#define inb(p) 			__inb16(p)
+#define outb(v,p)		__outb16(v,p)
+#else
+#define inb(p)			__inb8(p)
+#define outb(v,p)		__outb8(v,p)
+#endif
+
+#define inw(p)			__inw(p)
+#define outw(v,p)		__outw(v,p)
+
+#define inl(p)			__inl(p)
+#define outl(v,p)		__outl(v,p)
+
+#define readb(b)		__readb(b)
+#define readw(b)		__readw(b)
+#define readl(b)		__readl(b)
+#define readb_relaxed(addr)	readb(addr)
+#define readw_relaxed(addr)	readw(addr)
+#define readl_relaxed(addr)	readl(addr)
+
+#define writeb(v,b)		__writeb(v,b)
+#define writew(v,b)		__writew(v,b)
+#define writel(v,b)		__writel(v,b)
+
+#define insb insb
+extern void insb(unsigned int port, void *buf, int sz);
+#define insw insw
+extern void insw(unsigned int port, void *buf, int sz);
+#define insl insl
+extern void insl(unsigned int port, void *buf, int sz);
+
+#define outsb outsb
+extern void outsb(unsigned int port, const void *buf, int sz);
+#define outsw outsw
+extern void outsw(unsigned int port, const void *buf, int sz);
+#define outsl outsl
+extern void outsl(unsigned int port, const void *buf, int sz);
+
+/* can't support writesb atm */
+#define writesw writesw
+extern void writesw(volatile void __iomem *addr, const void *data, int wordlen);
+#define writesl writesl
+extern void writesl(volatile void __iomem *addr, const void *data, int longlen);
+
+/* can't support readsb atm */
+#define readsw readsw
+extern void readsw(const volatile void __iomem *addr, void *data, int wordlen);
+
+#define readsl readsl
+extern void readsl(const volatile void __iomem *addr, void *data, int longlen);
+
+#endif
diff --git a/kernel/arch/arm/mach-ebsa110/include/mach/irqs.h b/kernel/arch/arm/mach-ebsa110/include/mach/irqs.h
new file mode 100644
index 000000000..a8f3771bc
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/include/mach/irqs.h
@@ -0,0 +1,20 @@
+/*
+ *  arch/arm/mach-ebsa110/include/mach/irqs.h
+ *
+ *  Copyright (C) 1996 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.
+ */
+
+#define NR_IRQS			8
+
+#define IRQ_EBSA110_PRINTER	0
+#define IRQ_EBSA110_COM1	1
+#define IRQ_EBSA110_COM2	2
+#define IRQ_EBSA110_ETHERNET	3
+#define IRQ_EBSA110_TIMER0	4
+#define IRQ_EBSA110_TIMER1	5
+#define IRQ_EBSA110_PCMCIA	6
+#define IRQ_EBSA110_IMMEDIATE	7
diff --git a/kernel/arch/arm/mach-ebsa110/include/mach/memory.h b/kernel/arch/arm/mach-ebsa110/include/mach/memory.h
new file mode 100644
index 000000000..866f8a1c6
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/include/mach/memory.h
@@ -0,0 +1,25 @@
+/*
+ *  arch/arm/mach-ebsa110/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
+ *   21-Mar-1999 RMK	Renamed to memory.h
+ *		 RMK	Moved TASK_SIZE and PAGE_OFFSET here
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+/*
+ * Cache flushing area - SRAM
+ */
+#define FLUSH_BASE_PHYS		0x40000000
+#define FLUSH_BASE		0xdf000000
+
+#endif
diff --git a/kernel/arch/arm/mach-ebsa110/include/mach/uncompress.h b/kernel/arch/arm/mach-ebsa110/include/mach/uncompress.h
new file mode 100644
index 000000000..ab64bea69
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/include/mach/uncompress.h
@@ -0,0 +1,44 @@
+/*
+ *  arch/arm/mach-ebsa110/include/mach/uncompress.h
+ *
+ *  Copyright (C) 1996,1997,1998 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 <linux/serial_reg.h>
+
+#define SERIAL_BASE	((unsigned char *)0xf0000be0)
+
+/*
+ * This does not append a newline
+ */
+static inline void putc(int c)
+{
+	unsigned char v, *base = SERIAL_BASE;
+
+	do {
+		v = base[UART_LSR << 2];
+		barrier();
+	} while (!(v & UART_LSR_THRE));
+
+	base[UART_TX << 2] = c;
+}
+
+static inline void flush(void)
+{
+	unsigned char v, *base = SERIAL_BASE;
+
+	do {
+		v = base[UART_LSR << 2];
+		barrier();
+	} while ((v & (UART_LSR_TEMT|UART_LSR_THRE)) !=
+		 (UART_LSR_TEMT|UART_LSR_THRE));
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()
diff --git a/kernel/arch/arm/mach-ebsa110/io.c b/kernel/arch/arm/mach-ebsa110/io.c
new file mode 100644
index 000000000..b57980b43
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/io.c
@@ -0,0 +1,439 @@
+/*
+ *  linux/arch/arm/mach-ebsa110/isamem.c
+ *
+ *  Copyright (C) 2001 Russell King
+ *
+ * Perform "ISA" memory and IO accesses.  The EBSA110 has some "peculiarities"
+ * in the way it handles accesses to odd IO ports on 16-bit devices.  These
+ * devices have their D0-D15 lines connected to the processors D0-D15 lines.
+ * Since they expect all byte IO operations to be performed on D0-D7, and the
+ * StrongARM expects to transfer the byte to these odd addresses on D8-D15,
+ * we must use a trick to get the required behaviour.
+ *
+ * The trick employed here is to use long word stores to odd address -1.  The
+ * glue logic picks this up as a "trick" access, and asserts the LSB of the
+ * peripherals address bus, thereby accessing the odd IO port.  Meanwhile, the
+ * StrongARM transfers its data on D0-D7 as expected.
+ *
+ * Things get more interesting on the pass-1 EBSA110 - the PCMCIA controller
+ * wiring was screwed in such a way that it had limited memory space access.
+ * Luckily, the work-around for this is not too horrible.  See
+ * __isamem_convert_addr for the details.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <asm/page.h>
+
+static void __iomem *__isamem_convert_addr(const volatile void __iomem *addr)
+{
+	u32 ret, a = (u32 __force) addr;
+
+	/*
+	 * The PCMCIA controller is wired up as follows:
+	 *        +---------+---------+---------+---------+---------+---------+
+	 * PCMCIA | 2 2 2 2 | 1 1 1 1 | 1 1 1 1 | 1 1     |         |         |
+	 *        | 3 2 1 0 | 9 8 7 6 | 5 4 3 2 | 1 0 9 8 | 7 6 5 4 | 3 2 1 0 |
+	 *        +---------+---------+---------+---------+---------+---------+
+	 *  CPU   | 2 2 2 2 | 2 1 1 1 | 1 1 1 1 | 1 1 1   |         |         |
+	 *        | 4 3 2 1 | 0 9 9 8 | 7 6 5 4 | 3 2 0 9 | 8 7 6 5 | 4 3 2 x |
+	 *        +---------+---------+---------+---------+---------+---------+
+	 *
+	 * This means that we can access PCMCIA regions as follows:
+	 *	0x*10000 -> 0x*1ffff
+	 *	0x*70000 -> 0x*7ffff
+	 *	0x*90000 -> 0x*9ffff
+	 *	0x*f0000 -> 0x*fffff
+	 */
+	ret  = (a & 0xf803fe) << 1;
+	ret |= (a & 0x03fc00) << 2;
+
+	ret += 0xe8000000;
+
+	if ((a & 0x20000) == (a & 0x40000) >> 1)
+		return (void __iomem *)ret;
+
+	BUG();
+	return NULL;
+}
+
+/*
+ * read[bwl] and write[bwl]
+ */
+u8 __readb(const volatile void __iomem *addr)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+	u32 ret;
+
+	if ((unsigned long)addr & 1)
+		ret = __raw_readl(a);
+	else
+		ret = __raw_readb(a);
+	return ret;
+}
+
+u16 __readw(const volatile void __iomem *addr)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+
+	if ((unsigned long)addr & 1)
+		BUG();
+
+	return __raw_readw(a);
+}
+
+u32 __readl(const volatile void __iomem *addr)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+	u32 ret;
+
+	if ((unsigned long)addr & 3)
+		BUG();
+
+	ret = __raw_readw(a);
+	ret |= __raw_readw(a + 4) << 16;
+	return ret;
+}
+
+EXPORT_SYMBOL(__readb);
+EXPORT_SYMBOL(__readw);
+EXPORT_SYMBOL(__readl);
+
+void readsw(const volatile void __iomem *addr, void *data, int len)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+
+	BUG_ON((unsigned long)addr & 1);
+
+	__raw_readsw(a, data, len);
+}
+EXPORT_SYMBOL(readsw);
+
+void readsl(const volatile void __iomem *addr, void *data, int len)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+
+	BUG_ON((unsigned long)addr & 3);
+
+	__raw_readsl(a, data, len);
+}
+EXPORT_SYMBOL(readsl);
+
+void __writeb(u8 val, volatile void __iomem *addr)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+
+	if ((unsigned long)addr & 1)
+		__raw_writel(val, a);
+	else
+		__raw_writeb(val, a);
+}
+
+void __writew(u16 val, volatile void __iomem *addr)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+
+	if ((unsigned long)addr & 1)
+		BUG();
+
+	__raw_writew(val, a);
+}
+
+void __writel(u32 val, volatile void __iomem *addr)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+
+	if ((unsigned long)addr & 3)
+		BUG();
+
+	__raw_writew(val, a);
+	__raw_writew(val >> 16, a + 4);
+}
+
+EXPORT_SYMBOL(__writeb);
+EXPORT_SYMBOL(__writew);
+EXPORT_SYMBOL(__writel);
+
+void writesw(volatile void __iomem *addr, const void *data, int len)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+
+	BUG_ON((unsigned long)addr & 1);
+
+	__raw_writesw(a, data, len);
+}
+EXPORT_SYMBOL(writesw);
+
+void writesl(volatile void __iomem *addr, const void *data, int len)
+{
+	void __iomem *a = __isamem_convert_addr(addr);
+
+	BUG_ON((unsigned long)addr & 3);
+
+	__raw_writesl(a, data, len);
+}
+EXPORT_SYMBOL(writesl);
+
+/*
+ * The EBSA110 has a weird "ISA IO" region:
+ *
+ * Region 0 (addr = 0xf0000000 + io << 2)
+ * --------------------------------------------------------
+ * Physical region	IO region
+ * f0000fe0 - f0000ffc	3f8 - 3ff  ttyS0
+ * f0000e60 - f0000e64	398 - 399
+ * f0000de0 - f0000dfc	378 - 37f  lp0
+ * f0000be0 - f0000bfc	2f8 - 2ff  ttyS1
+ *
+ * Region 1 (addr = 0xf0000000 + (io & ~1) << 1 + (io & 1))
+ * --------------------------------------------------------
+ * Physical region	IO region
+ * f00014f1             a79        pnp write data
+ * f00007c0 - f00007c1	3e0 - 3e1  pcmcia
+ * f00004f1		279        pnp address
+ * f0000440 - f000046c  220 - 236  eth0
+ * f0000405		203        pnp read data
+ */
+#define SUPERIO_PORT(p) \
+	(((p) >> 3) == (0x3f8 >> 3) || \
+	 ((p) >> 3) == (0x2f8 >> 3) || \
+	 ((p) >> 3) == (0x378 >> 3))
+
+/*
+ * We're addressing an 8 or 16-bit peripheral which tranfers
+ * odd addresses on the low ISA byte lane.
+ */
+u8 __inb8(unsigned int port)
+{
+	u32 ret;
+
+	/*
+	 * The SuperIO registers use sane addressing techniques...
+	 */
+	if (SUPERIO_PORT(port))
+		ret = __raw_readb((void __iomem *)ISAIO_BASE + (port << 2));
+	else {
+		void __iomem *a = (void __iomem *)ISAIO_BASE + ((port & ~1) << 1);
+
+		/*
+		 * Shame nothing else does
+		 */
+		if (port & 1)
+			ret = __raw_readl(a);
+		else
+			ret = __raw_readb(a);
+	}
+	return ret;
+}
+
+/*
+ * We're addressing a 16-bit peripheral which transfers odd
+ * addresses on the high ISA byte lane.
+ */
+u8 __inb16(unsigned int port)
+{
+	unsigned int offset;
+
+	/*
+	 * The SuperIO registers use sane addressing techniques...
+	 */
+	if (SUPERIO_PORT(port))
+		offset = port << 2;
+	else
+		offset = (port & ~1) << 1 | (port & 1);
+
+	return __raw_readb((void __iomem *)ISAIO_BASE + offset);
+}
+
+u16 __inw(unsigned int port)
+{
+	unsigned int offset;
+
+	/*
+	 * The SuperIO registers use sane addressing techniques...
+	 */
+	if (SUPERIO_PORT(port))
+		offset = port << 2;
+	else {
+		offset = port << 1;
+		BUG_ON(port & 1);
+	}
+	return __raw_readw((void __iomem *)ISAIO_BASE + offset);
+}
+
+/*
+ * Fake a 32-bit read with two 16-bit reads.  Needed for 3c589.
+ */
+u32 __inl(unsigned int port)
+{
+	void __iomem *a;
+
+	if (SUPERIO_PORT(port) || port & 3)
+		BUG();
+
+	a = (void __iomem *)ISAIO_BASE + ((port & ~1) << 1);
+
+	return __raw_readw(a) | __raw_readw(a + 4) << 16;
+}
+
+EXPORT_SYMBOL(__inb8);
+EXPORT_SYMBOL(__inb16);
+EXPORT_SYMBOL(__inw);
+EXPORT_SYMBOL(__inl);
+
+void __outb8(u8 val, unsigned int port)
+{
+	/*
+	 * The SuperIO registers use sane addressing techniques...
+	 */
+	if (SUPERIO_PORT(port))
+		__raw_writeb(val, (void __iomem *)ISAIO_BASE + (port << 2));
+	else {
+		void __iomem *a = (void __iomem *)ISAIO_BASE + ((port & ~1) << 1);
+
+		/*
+		 * Shame nothing else does
+		 */
+		if (port & 1)
+			__raw_writel(val, a);
+		else
+			__raw_writeb(val, a);
+	}
+}
+
+void __outb16(u8 val, unsigned int port)
+{
+	unsigned int offset;
+
+	/*
+	 * The SuperIO registers use sane addressing techniques...
+	 */
+	if (SUPERIO_PORT(port))
+		offset = port << 2;
+	else
+		offset = (port & ~1) << 1 | (port & 1);
+
+	__raw_writeb(val, (void __iomem *)ISAIO_BASE + offset);
+}
+
+void __outw(u16 val, unsigned int port)
+{
+	unsigned int offset;
+
+	/*
+	 * The SuperIO registers use sane addressing techniques...
+	 */
+	if (SUPERIO_PORT(port))
+		offset = port << 2;
+	else {
+		offset = port << 1;
+		BUG_ON(port & 1);
+	}
+	__raw_writew(val, (void __iomem *)ISAIO_BASE + offset);
+}
+
+void __outl(u32 val, unsigned int port)
+{
+	BUG();
+}
+
+EXPORT_SYMBOL(__outb8);
+EXPORT_SYMBOL(__outb16);
+EXPORT_SYMBOL(__outw);
+EXPORT_SYMBOL(__outl);
+
+void outsb(unsigned int port, const void *from, int len)
+{
+	u32 off;
+
+	if (SUPERIO_PORT(port))
+		off = port << 2;
+	else {
+		off = (port & ~1) << 1;
+		if (port & 1)
+			BUG();
+	}
+
+	__raw_writesb((void __iomem *)ISAIO_BASE + off, from, len);
+}
+
+void insb(unsigned int port, void *from, int len)
+{
+	u32 off;
+
+	if (SUPERIO_PORT(port))
+		off = port << 2;
+	else {
+		off = (port & ~1) << 1;
+		if (port & 1)
+			BUG();
+	}
+
+	__raw_readsb((void __iomem *)ISAIO_BASE + off, from, len);
+}
+
+EXPORT_SYMBOL(outsb);
+EXPORT_SYMBOL(insb);
+
+void outsw(unsigned int port, const void *from, int len)
+{
+	u32 off;
+
+	if (SUPERIO_PORT(port))
+		off = port << 2;
+	else {
+		off = (port & ~1) << 1;
+		if (port & 1)
+			BUG();
+	}
+
+	__raw_writesw((void __iomem *)ISAIO_BASE + off, from, len);
+}
+
+void insw(unsigned int port, void *from, int len)
+{
+	u32 off;
+
+	if (SUPERIO_PORT(port))
+		off = port << 2;
+	else {
+		off = (port & ~1) << 1;
+		if (port & 1)
+			BUG();
+	}
+
+	__raw_readsw((void __iomem *)ISAIO_BASE + off, from, len);
+}
+
+EXPORT_SYMBOL(outsw);
+EXPORT_SYMBOL(insw);
+
+/*
+ * We implement these as 16-bit insw/outsw, mainly for
+ * 3c589 cards.
+ */
+void outsl(unsigned int port, const void *from, int len)
+{
+	u32 off = port << 1;
+
+	if (SUPERIO_PORT(port) || port & 3)
+		BUG();
+
+	__raw_writesw((void __iomem *)ISAIO_BASE + off, from, len << 1);
+}
+
+void insl(unsigned int port, void *from, int len)
+{
+	u32 off = port << 1;
+
+	if (SUPERIO_PORT(port) || port & 3)
+		BUG();
+
+	__raw_readsw((void __iomem *)ISAIO_BASE + off, from, len << 1);
+}
+
+EXPORT_SYMBOL(outsl);
+EXPORT_SYMBOL(insl);
diff --git a/kernel/arch/arm/mach-ebsa110/leds.c b/kernel/arch/arm/mach-ebsa110/leds.c
new file mode 100644
index 000000000..0398258c2
--- /dev/null
+++ b/kernel/arch/arm/mach-ebsa110/leds.c
@@ -0,0 +1,71 @@
+/*
+ * Driver for the LED found on the EBSA110 machine
+ * Based on Versatile and RealView machine LED code
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ * Author: Bryan Wu <bryan.wu@canonical.com>
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/leds.h>
+
+#include <asm/mach-types.h>
+
+#include "core.h"
+
+#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
+static void ebsa110_led_set(struct led_classdev *cdev,
+			      enum led_brightness b)
+{
+	u8 reg = __raw_readb(SOFT_BASE);
+
+	if (b != LED_OFF)
+		reg |= 0x80;
+	else
+		reg &= ~0x80;
+
+	__raw_writeb(reg, SOFT_BASE);
+}
+
+static enum led_brightness ebsa110_led_get(struct led_classdev *cdev)
+{
+	u8 reg = __raw_readb(SOFT_BASE);
+
+	return (reg & 0x80) ? LED_FULL : LED_OFF;
+}
+
+static int __init ebsa110_leds_init(void)
+{
+
+	struct led_classdev *cdev;
+	int ret;
+
+	if (!machine_is_ebsa110())
+		return -ENODEV;
+
+	cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
+	if (!cdev)
+		return -ENOMEM;
+
+	cdev->name = "ebsa110:0";
+	cdev->brightness_set = ebsa110_led_set;
+	cdev->brightness_get = ebsa110_led_get;
+	cdev->default_trigger = "heartbeat";
+
+	ret = led_classdev_register(NULL, cdev);
+	if (ret	< 0) {
+		kfree(cdev);
+		return ret;
+	}
+
+	return 0;
+}
+
+/*
+ * Since we may have triggers on any subsystem, defer registration
+ * until after subsystem_init.
+ */
+fs_initcall(ebsa110_leds_init);
+#endif