Merge branch 'master' of git://git.denx.de/u-boot-arm

Conflicts:
	cpu/arm1176/cpu.c
	cpu/arm1176/start.S
	cpu/arm_cortexa8/s5pc1xx/Makefile
	cpu/arm_cortexa8/s5pc1xx/clock.c
	drivers/serial/serial_s5p.c
	include/asm-arm/arch-s5pc1xx/clk.h
	include/asm-arm/arch-s5pc1xx/gpio.h
	include/asm-arm/arch-s5pc1xx/uart.h

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

31 files changed, 2597 insertions, 0 deletions

diff --git a/arch/microblaze/config.mk b/arch/microblaze/config.mk
new file mode 100644
index 0000000..c3c9f95
--- /dev/null
+++ b/arch/microblaze/config.mk
@@ -0,0 +1,31 @@
+#
+# (C) Copyright 2007-2008 Michal Simek
+# Michal SIMEK <monstr@monstr.eu>
+#
+# (C) Copyright 2004 Atmark Techno, Inc.
+# Yasushi SHOJI <yashi@atmark-techno.com>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+CROSS_COMPILE ?= mb-
+
+STANDALONE_LOAD_ADDR = 0x80F00000
+
+PLATFORM_CPPFLAGS += -ffixed-r31 -D__microblaze__
diff --git a/arch/microblaze/cpu/Makefile b/arch/microblaze/cpu/Makefile
new file mode 100644
index 0000000..9d54201
--- /dev/null
+++ b/arch/microblaze/cpu/Makefile
@@ -0,0 +1,48 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(CPU).a
+
+START	= start.o
+SOBJS	= irq.o
+COBJS	= cpu.o interrupts.o cache.o exception.o timer.o
+
+SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+START	:= $(addprefix $(obj),$(START))
+
+all:	$(obj).depend $(START) $(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/microblaze/cpu/cache.c b/arch/microblaze/cpu/cache.c
new file mode 100644
index 0000000..3b7c4d4
--- /dev/null
+++ b/arch/microblaze/cpu/cache.c
@@ -0,0 +1,62 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal SIMEK <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/asm.h>
+
+int dcache_status (void)
+{
+	int i = 0;
+	int mask = 0x80;
+	__asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory");
+	/* i&=0x80 */
+	__asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory");
+	return i;
+}
+
+int icache_status (void)
+{
+	int i = 0;
+	int mask = 0x20;
+	__asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory");
+	/* i&=0x20 */
+	__asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory");
+	return i;
+}
+
+void	icache_enable (void) {
+	MSRSET(0x20);
+}
+
+void	icache_disable(void) {
+	MSRCLR(0x20);
+}
+
+void	dcache_enable (void) {
+	MSRSET(0x80);
+}
+
+void	dcache_disable(void) {
+	MSRCLR(0x80);
+}
diff --git a/arch/microblaze/cpu/cpu.c b/arch/microblaze/cpu/cpu.c
new file mode 100644
index 0000000..4d2b270
--- /dev/null
+++ b/arch/microblaze/cpu/cpu.c
@@ -0,0 +1,25 @@
+/*
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* EMPTY FILE */
diff --git a/arch/microblaze/cpu/exception.c b/arch/microblaze/cpu/exception.c
new file mode 100644
index 0000000..0365de3
--- /dev/null
+++ b/arch/microblaze/cpu/exception.c
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/asm.h>
+
+void _hw_exception_handler (void)
+{
+	int address = 0;
+	int state = 0;
+	/* loading address of exception EAR */
+	MFS (address, rear);
+	/* loading excetpion state register ESR */
+	MFS (state, resr);
+	printf ("Hardware exception at 0x%x address\n", address);
+	switch (state & 0x1f) {	/* mask on exception cause */
+	case 0x1:
+		puts ("Unaligned data access exception\n");
+		break;
+	case 0x2:
+		puts ("Illegal op-code exception\n");
+		break;
+	case 0x3:
+		puts ("Instruction bus error exception\n");
+		break;
+	case 0x4:
+		puts ("Data bus error exception\n");
+		break;
+	case 0x5:
+		puts ("Divide by zero exception\n");
+		break;
+#ifdef MICROBLAZE_V5
+	case 0x1000:
+		puts ("Exception in delay slot\n");
+		break;
+#endif
+	default:
+		puts ("Undefined cause\n");
+		break;
+	}
+	printf ("Unaligned %sword access\n", ((state & 0x800) ? "" : "half"));
+	printf ("Unaligned %s access\n", ((state & 0x400) ? "store" : "load"));
+	printf ("Register R%x\n", (state & 0x3E) >> 5);
+	hang ();
+}
+
+#ifdef CONFIG_SYS_USR_EXCEP
+void _exception_handler (void)
+{
+	puts ("User vector_exception\n");
+	hang ();
+}
+#endif
diff --git a/arch/microblaze/cpu/interrupts.c b/arch/microblaze/cpu/interrupts.c
new file mode 100644
index 0000000..a6021c9
--- /dev/null
+++ b/arch/microblaze/cpu/interrupts.c
@@ -0,0 +1,220 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/microblaze_intc.h>
+#include <asm/asm.h>
+
+#undef DEBUG_INT
+
+extern void microblaze_disable_interrupts (void);
+extern void microblaze_enable_interrupts (void);
+
+void enable_interrupts (void)
+{
+	MSRSET(0x2);
+}
+
+int disable_interrupts (void)
+{
+	MSRCLR(0x2);
+	return 0;
+}
+
+#ifdef CONFIG_SYS_INTC_0
+#ifdef CONFIG_SYS_TIMER_0
+extern void timer_init (void);
+#endif
+#ifdef CONFIG_SYS_FSL_2
+extern void fsl_init2 (void);
+#endif
+
+
+static struct irq_action vecs[CONFIG_SYS_INTC_0_NUM];
+
+/* mapping structure to interrupt controller */
+microblaze_intc_t *intc = (microblaze_intc_t *) (CONFIG_SYS_INTC_0_ADDR);
+
+/* default handler */
+void def_hdlr (void)
+{
+	puts ("def_hdlr\n");
+}
+
+void enable_one_interrupt (int irq)
+{
+	int mask;
+	int offset = 1;
+	offset <<= irq;
+	mask = intc->ier;
+	intc->ier = (mask | offset);
+#ifdef DEBUG_INT
+	printf ("Enable one interrupt irq %x - mask %x,ier %x\n", offset, mask,
+		intc->ier);
+	printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier,
+		intc->iar, intc->mer);
+#endif
+}
+
+void disable_one_interrupt (int irq)
+{
+	int mask;
+	int offset = 1;
+	offset <<= irq;
+	mask = intc->ier;
+	intc->ier = (mask & ~offset);
+#ifdef DEBUG_INT
+	printf ("Disable one interrupt irq %x - mask %x,ier %x\n", irq, mask,
+		intc->ier);
+	printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier,
+		intc->iar, intc->mer);
+#endif
+}
+
+/* adding new handler for interrupt */
+void install_interrupt_handler (int irq, interrupt_handler_t * hdlr, void *arg)
+{
+	struct irq_action *act;
+	/* irq out of range */
+	if ((irq < 0) || (irq > CONFIG_SYS_INTC_0_NUM)) {
+		puts ("IRQ out of range\n");
+		return;
+	}
+	act = &vecs[irq];
+	if (hdlr) {		/* enable */
+		act->handler = hdlr;
+		act->arg = arg;
+		act->count = 0;
+		enable_one_interrupt (irq);
+	} else {		/* disable */
+		act->handler = (interrupt_handler_t *) def_hdlr;
+		act->arg = (void *)irq;
+		disable_one_interrupt (irq);
+	}
+}
+
+/* initialization interrupt controller - hardware */
+void intc_init (void)
+{
+	intc->mer = 0;
+	intc->ier = 0;
+	intc->iar = 0xFFFFFFFF;
+	/* XIntc_Start - hw_interrupt enable and all interrupt enable */
+	intc->mer = 0x3;
+#ifdef DEBUG_INT
+	printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier,
+		intc->iar, intc->mer);
+#endif
+}
+
+int interrupts_init (void)
+{
+	int i;
+	/* initialize irq list */
+	for (i = 0; i < CONFIG_SYS_INTC_0_NUM; i++) {
+		vecs[i].handler = (interrupt_handler_t *) def_hdlr;
+		vecs[i].arg = (void *)i;
+		vecs[i].count = 0;
+	}
+	/* initialize intc controller */
+	intc_init ();
+#ifdef CONFIG_SYS_TIMER_0
+	timer_init ();
+#endif
+#ifdef CONFIG_SYS_FSL_2
+	fsl_init2 ();
+#endif
+	enable_interrupts ();
+	return 0;
+}
+
+void interrupt_handler (void)
+{
+	int irqs = (intc->isr & intc->ier);	/* find active interrupt */
+	int i = 1;
+#ifdef DEBUG_INT
+	int value;
+	printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier,
+		intc->iar, intc->mer);
+	R14(value);
+	printf ("Interrupt handler on %x line, r14 %x\n", irqs, value);
+#endif
+	struct irq_action *act = vecs;
+	while (irqs) {
+		if (irqs & 1) {
+#ifdef DEBUG_INT
+			printf
+			    ("Jumping to interrupt handler rutine addr %x,count %x,arg %x\n",
+			     act->handler, act->count, act->arg);
+#endif
+			act->handler (act->arg);
+			act->count++;
+			intc->iar = i;
+			return;
+		}
+		irqs >>= 1;
+		act++;
+		i <<= 1;
+	}
+
+#ifdef DEBUG_INT
+	printf ("Dump INTC reg, isr %x, ier %x, iar %x, mer %x\n", intc->isr,
+		intc->ier, intc->iar, intc->mer);
+	R14(value);
+	printf ("Interrupt handler on %x line, r14 %x\n", irqs, value);
+#endif
+}
+#endif
+
+#if defined(CONFIG_CMD_IRQ)
+#ifdef CONFIG_SYS_INTC_0
+int do_irqinfo (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	int i;
+	struct irq_action *act = vecs;
+
+	puts ("\nInterrupt-Information:\n\n"
+	      "Nr  Routine   Arg       Count\n"
+	      "-----------------------------\n");
+
+	for (i = 0; i < CONFIG_SYS_INTC_0_NUM; i++) {
+		if (act->handler != (interrupt_handler_t*) def_hdlr) {
+			printf ("%02d  %08x  %08x  %d\n", i,
+				(int)act->handler, (int)act->arg, act->count);
+		}
+		act++;
+	}
+	puts ("\n");
+	return (0);
+}
+#else
+int do_irqinfo (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	puts ("Undefined interrupt controller\n");
+}
+#endif
+#endif
diff --git a/arch/microblaze/cpu/irq.S b/arch/microblaze/cpu/irq.S
new file mode 100644
index 0000000..e1fc190
--- /dev/null
+++ b/arch/microblaze/cpu/irq.S
@@ -0,0 +1,172 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <asm/asm.h>
+	.text
+	.global _interrupt_handler
+_interrupt_handler:
+	addi	r1, r1, -4
+	swi	r2, r1, 0
+	addi	r1, r1, -4
+	swi	r3, r1, 0
+	addi	r1, r1, -4
+	swi	r4, r1, 0
+	addi	r1, r1, -4
+	swi	r5, r1, 0
+	addi	r1, r1, -4
+	swi	r6, r1, 0
+	addi	r1, r1, -4
+	swi	r7, r1, 0
+	addi	r1, r1, -4
+	swi	r8, r1, 0
+	addi	r1, r1, -4
+	swi	r9, r1, 0
+	addi	r1, r1, -4
+	swi	r10, r1, 0
+	addi	r1, r1, -4
+	swi	r11, r1, 0
+	addi	r1, r1, -4
+	swi	r12, r1, 0
+	addi	r1, r1, -4
+	swi	r13, r1, 0
+	addi	r1, r1, -4
+	swi	r14, r1, 0
+	addi	r1, r1, -4
+	swi	r15, r1, 0
+	addi	r1, r1, -4
+	swi	r16, r1, 0
+	addi	r1, r1, -4
+	swi	r17, r1, 0
+	addi	r1, r1, -4
+	swi	r18, r1, 0
+	addi	r1, r1, -4
+	swi	r19, r1, 0
+	addi	r1, r1, -4
+	swi	r20, r1, 0
+	addi	r1, r1, -4
+	swi	r21, r1, 0
+	addi	r1, r1, -4
+	swi	r22, r1, 0
+	addi	r1, r1, -4
+	swi	r23, r1, 0
+	addi	r1, r1, -4
+	swi	r24, r1, 0
+	addi	r1, r1, -4
+	swi	r25, r1, 0
+	addi	r1, r1, -4
+	swi	r26, r1, 0
+	addi	r1, r1, -4
+	swi	r27, r1, 0
+	addi	r1, r1, -4
+	swi	r28, r1, 0
+	addi	r1, r1, -4
+	swi	r29, r1, 0
+	addi	r1, r1, -4
+	swi	r30, r1, 0
+	addi	r1, r1, -4
+	swi	r31, r1, 0
+	brlid	r15, interrupt_handler
+	nop
+	nop
+	lwi	r31, r1, 0
+	addi	r1, r1, 4
+	lwi	r30, r1, 0
+	addi	r1, r1, 4
+	lwi	r29, r1, 0
+	addi	r1, r1, 4
+	lwi	r28, r1, 0
+	addi	r1, r1, 4
+	lwi	r27, r1, 0
+	addi	r1, r1, 4
+	lwi	r26, r1, 0
+	addi	r1, r1, 4
+	lwi	r25, r1, 0
+	addi	r1, r1, 4
+	lwi	r24, r1, 0
+	addi	r1, r1, 4
+	lwi	r23, r1, 0
+	addi	r1, r1, 4
+	lwi	r22, r1, 0
+	addi	r1, r1, 4
+	lwi	r21, r1, 0
+	addi	r1, r1, 4
+	lwi	r20, r1, 0
+	addi	r1, r1, 4
+	lwi	r19, r1, 0
+	addi	r1, r1, 4
+	lwi	r18, r1, 0
+	addi	r1, r1, 4
+	lwi	r17, r1, 0
+	addi	r1, r1, 4
+	lwi	r16, r1, 0
+	addi	r1, r1, 4
+	lwi	r15, r1, 0
+	addi	r1, r1, 4
+	lwi	r14, r1, 0
+	addi	r1, r1, 4
+	lwi	r13, r1, 0
+	addi	r1, r1, 4
+	lwi	r12, r1, 0
+	addi	r1, r1, 4
+	lwi	r11, r1, 0
+	addi	r1, r1, 4
+	lwi	r10, r1, 0
+	addi	r1, r1, 4
+	lwi	r9, r1, 0
+	addi	r1, r1, 4
+	lwi	r8, r1, 0
+	addi	r1, r1, 4
+	lwi	r7, r1, 0
+	addi	r1, r1, 4
+	lwi	r6, r1, 0
+	addi	r1, r1, 4
+	lwi	r5, r1, 0
+	addi	r1, r1, 4
+	lwi	r4, r1, 0
+	addi	r1, r1, 4
+	lwi	r3, r1, 0
+	addi	r1, r1, 4
+	lwi	r2, r1, 0
+	addi	r1, r1, 4
+
+	/* enable_interrupt */
+#ifdef XILINX_USE_MSR_INSTR
+	msrset	r0, 2
+#else
+	/* FIXME unstable in stressed mode - two irqs */
+	nop
+	addi	r1, r1, -4
+	swi	r12, r1, 0
+	mfs	r12, rmsr
+	ori	r12, r12, 2
+	mts	rmsr, r12
+	lwi	r12, r1, 0
+	addi	r1, r1, 4
+	nop
+#endif
+	bra	r14
+	nop
+	nop
+	.size _interrupt_handler,.-_interrupt_handler
diff --git a/arch/microblaze/cpu/start.S b/arch/microblaze/cpu/start.S
new file mode 100644
index 0000000..2e9a08d
--- /dev/null
+++ b/arch/microblaze/cpu/start.S
@@ -0,0 +1,150 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+
+	.text
+	.global _start
+_start:
+	mts	rmsr, r0	/* disable cache */
+	addi	r1, r0, CONFIG_SYS_INIT_SP_OFFSET
+	addi	r1, r1, -4	/* Decrement SP to top of memory */
+	/* add opcode instruction for 32bit jump - 2 instruction imm & brai*/
+	addi	r6, r0, 0xb0000000	/* hex b000 opcode imm */
+	swi	r6, r0, 0x0	/* reset address */
+	swi	r6, r0, 0x8	/* user vector exception */
+	swi	r6, r0, 0x10	/* interrupt */
+	swi	r6, r0, 0x20	/* hardware exception */
+
+	addi	r6, r0, 0xb8080000	/* hew b808 opcode brai*/
+	swi	r6, r0, 0x4	/* reset address */
+	swi	r6, r0, 0xC	/* user vector exception */
+	swi	r6, r0, 0x14	/* interrupt */
+	swi	r6, r0, 0x24	/* hardware exception */
+
+#ifdef CONFIG_SYS_RESET_ADDRESS
+	/* reset address */
+	addik	r6, r0, CONFIG_SYS_RESET_ADDRESS
+	sw	r6, r1, r0
+	lhu	r7, r1, r0
+	shi	r7, r0, 0x2
+	shi	r6, r0, 0x6
+/*
+ * Copy U-Boot code to TEXT_BASE
+ * solve problem with sbrk_base
+ */
+#if (CONFIG_SYS_RESET_ADDRESS != TEXT_BASE)
+	addi	r4, r0, __end
+	addi	r5, r0, __text_start
+	rsub	r4, r5, r4	/* size = __end - __text_start */
+	addi	r6, r0, CONFIG_SYS_RESET_ADDRESS	/* source address */
+	addi	r7, r0, 0	/* counter */
+4:
+	lw	r8, r6, r7
+	sw	r8, r5, r7
+	addi	r7, r7, 0x4
+	cmp	r8, r4, r7
+	blti	r8, 4b
+#endif
+#endif
+
+#ifdef CONFIG_SYS_USR_EXCEP
+	/* user_vector_exception */
+	addik	r6, r0, _exception_handler
+	sw	r6, r1, r0
+	lhu	r7, r1, r0
+	shi	r7, r0, 0xa
+	shi	r6, r0, 0xe
+#endif
+
+#ifdef CONFIG_SYS_INTC_0
+	/* interrupt_handler */
+	addik	r6, r0, _interrupt_handler
+	sw	r6, r1, r0
+	lhu	r7, r1, r0
+	shi	r7, r0, 0x12
+	shi	r6, r0, 0x16
+#endif
+
+	/* hardware exception */
+	addik	r6, r0, _hw_exception_handler
+	sw	r6, r1, r0
+	lhu	r7, r1, r0
+	shi	r7, r0, 0x22
+	shi	r6, r0, 0x26
+
+	/* enable instruction and data cache */
+	mfs	r12, rmsr
+	ori	r12, r12, 0xa0
+	mts	rmsr, r12
+
+clear_bss:
+	/* clear BSS segments */
+	addi	r5, r0, __bss_start
+	addi	r4, r0, __bss_end
+	cmp	r6, r5, r4
+	beqi	r6, 3f
+2:
+	swi     r0, r5, 0 /* write zero to loc */
+	addi    r5, r5, 4 /* increment to next loc */
+	cmp     r6, r5, r4 /* check if we have reach the end */
+	bnei    r6, 2b
+3:	/* jumping to board_init */
+	brai	board_init
+1:	bri	1b
+
+/*
+ * Read 16bit little endian
+ */
+	.text
+	.global	in16
+	.ent	in16
+	.align	2
+in16:	lhu	r3, r0, r5
+	bslli	r4, r3, 8
+	bsrli	r3, r3, 8
+	andi	r4, r4, 0xffff
+	or	r3, r3, r4
+	rtsd	r15, 8
+	sext16	r3, r3
+	.end	in16
+
+/*
+ * Write 16bit little endian
+ * first parameter(r5) - address, second(r6) - short value
+ */
+	.text
+	.global	out16
+	.ent	out16
+	.align	2
+out16:	bslli	r3, r6, 8
+	bsrli	r6, r6, 8
+	andi	r3, r3, 0xffff
+	or	r3, r3, r6
+	sh	r3, r0, r5
+	rtsd	r15, 8
+	or	r0, r0, r0
+	.end	out16
diff --git a/arch/microblaze/cpu/timer.c b/arch/microblaze/cpu/timer.c
new file mode 100644
index 0000000..a91eabc
--- /dev/null
+++ b/arch/microblaze/cpu/timer.c
@@ -0,0 +1,73 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/microblaze_timer.h>
+#include <asm/microblaze_intc.h>
+
+volatile int timestamp = 0;
+
+void reset_timer (void)
+{
+	timestamp = 0;
+}
+
+#ifdef CONFIG_SYS_TIMER_0
+ulong get_timer (ulong base)
+{
+	return (timestamp - base);
+}
+#else
+ulong get_timer (ulong base)
+{
+	return (timestamp++ - base);
+}
+#endif
+
+void set_timer (ulong t)
+{
+	timestamp = t;
+}
+
+#ifdef CONFIG_SYS_INTC_0
+#ifdef CONFIG_SYS_TIMER_0
+microblaze_timer_t *tmr = (microblaze_timer_t *) (CONFIG_SYS_TIMER_0_ADDR);
+
+void timer_isr (void *arg)
+{
+	timestamp++;
+	tmr->control = tmr->control | TIMER_INTERRUPT;
+}
+
+void timer_init (void)
+{
+	tmr->loadreg = CONFIG_SYS_TIMER_0_PRELOAD;
+	tmr->control = TIMER_INTERRUPT | TIMER_RESET;
+	tmr->control =
+	    TIMER_ENABLE | TIMER_ENABLE_INTR | TIMER_RELOAD | TIMER_DOWN_COUNT;
+	reset_timer ();
+	install_interrupt_handler (CONFIG_SYS_TIMER_0_IRQ, timer_isr, (void *)tmr);
+}
+#endif
+#endif
diff --git a/arch/microblaze/include/asm/asm.h b/arch/microblaze/include/asm/asm.h
new file mode 100644
index 0000000..deb23e0
--- /dev/null
+++ b/arch/microblaze/include/asm/asm.h
@@ -0,0 +1,98 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* FSL macros */
+#define NGET(val, fslnum) \
+	__asm__ __volatile__ ("nget %0, rfsl" #fslnum :"=r" (val));
+
+#define GET(val, fslnum) \
+	__asm__ __volatile__ ("get %0, rfsl" #fslnum :"=r" (val));
+
+#define NCGET(val, fslnum) \
+	__asm__ __volatile__ ("ncget %0, rfsl" #fslnum :"=r" (val));
+
+#define CGET(val, fslnum) \
+	__asm__ __volatile__ ("cget %0, rfsl" #fslnum :"=r" (val));
+
+#define NPUT(val, fslnum) \
+	__asm__ __volatile__ ("nput %0, rfsl" #fslnum ::"r" (val));
+
+#define PUT(val, fslnum) \
+	__asm__ __volatile__ ("put %0, rfsl" #fslnum ::"r" (val));
+
+#define NCPUT(val, fslnum) \
+	__asm__ __volatile__ ("ncput %0, rfsl" #fslnum ::"r" (val));
+
+#define CPUT(val, fslnum) \
+	__asm__ __volatile__ ("cput %0, rfsl" #fslnum ::"r" (val));
+
+/* CPU dependent */
+/* machine status register */
+#define MFS(val, reg) \
+	__asm__ __volatile__ ("mfs %0," #reg :"=r" (val));
+
+#define MTS(val, reg) \
+	__asm__ __volatile__ ("mts " #reg ", %0"::"r" (val));
+
+/* get return address from interrupt */
+#define R14(val) \
+	__asm__ __volatile__ ("addi %0, r14, 0":"=r" (val));
+
+#define NOP	__asm__ __volatile__ ("nop");
+
+/* use machine status registe USE_MSR_REG */
+#ifdef XILINX_USE_MSR_INSTR
+#define MSRSET(val) \
+	__asm__ __volatile__ ("msrset r0," #val );
+
+#define MSRCLR(val) \
+	__asm__ __volatile__ ("msrclr r0," #val );
+
+#else
+#define MSRSET(val)						\
+{								\
+	register unsigned tmp;					\
+	__asm__ __volatile__ ("					\
+			mfs	%0, rmsr;			\
+			ori	%0, %0, "#val";			\
+			mts	rmsr, %0;			\
+			nop;"					\
+			: "=r" (tmp)				\
+			: "d" (val)				\
+			: "memory");				\
+}
+
+#define MSRCLR(val)						\
+{								\
+	register unsigned tmp;					\
+	__asm__ __volatile__ ("					\
+			mfs	%0, rmsr;			\
+			andi	%0, %0, ~"#val";		\
+			mts	rmsr, %0;			\
+			nop;"					\
+			: "=r" (tmp)				\
+			: "d" (val)				\
+			: "memory");				\
+}
+#endif
diff --git a/arch/microblaze/include/asm/bitops.h b/arch/microblaze/include/asm/bitops.h
new file mode 100644
index 0000000..e8c835f
--- /dev/null
+++ b/arch/microblaze/include/asm/bitops.h
@@ -0,0 +1,392 @@
+#ifndef _MICROBLAZE_BITOPS_H
+#define _MICROBLAZE_BITOPS_H
+
+/*
+ * Copyright 1992, Linus Torvalds.
+ */
+
+#include <linux/config.h>
+#include <asm/byteorder.h>	/* swab32 */
+#include <asm/system.h>		/* save_flags */
+
+#ifdef __KERNEL__
+/*
+ * Function prototypes to keep gcc -Wall happy
+ */
+
+/*
+ * The __ functions are not atomic
+ */
+
+extern void set_bit(int nr, volatile void * addr);
+extern void __set_bit(int nr, volatile void * addr);
+
+extern void clear_bit(int nr, volatile void * addr);
+#define __clear_bit(nr, addr) clear_bit(nr, addr)
+#define PLATFORM__CLEAR_BIT
+
+extern void change_bit(int nr, volatile void * addr);
+extern void __change_bit(int nr, volatile void * addr);
+extern int test_and_set_bit(int nr, volatile void * addr);
+extern int __test_and_set_bit(int nr, volatile void * addr);
+extern int test_and_clear_bit(int nr, volatile void * addr);
+extern int __test_and_clear_bit(int nr, volatile void * addr);
+extern int test_and_change_bit(int nr, volatile void * addr);
+extern int __test_and_change_bit(int nr, volatile void * addr);
+extern int __constant_test_bit(int nr, const volatile void * addr);
+extern int __test_bit(int nr, volatile void * addr);
+extern int find_first_zero_bit(void * addr, unsigned size);
+extern int find_next_zero_bit (void * addr, int size, int offset);
+
+/*
+ * ffz = Find First Zero in word. Undefined if no zero exists,
+ * so code should check against ~0UL first..
+ */
+extern __inline__ unsigned long ffz(unsigned long word)
+{
+	unsigned long result = 0;
+
+	while(word & 1) {
+		result++;
+		word >>= 1;
+	}
+	return result;
+}
+
+
+extern __inline__ void set_bit(int nr, volatile void * addr)
+{
+	int	* a = (int *) addr;
+	int	mask;
+	unsigned long flags;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	save_flags_cli(flags);
+	*a |= mask;
+	restore_flags(flags);
+}
+
+extern __inline__ void __set_bit(int nr, volatile void * addr)
+{
+	int	* a = (int *) addr;
+	int	mask;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	*a |= mask;
+}
+#define PLATFORM__SET_BIT
+
+/*
+ * clear_bit() doesn't provide any barrier for the compiler.
+ */
+#define smp_mb__before_clear_bit()	barrier()
+#define smp_mb__after_clear_bit()	barrier()
+
+extern __inline__ void clear_bit(int nr, volatile void * addr)
+{
+	int	* a = (int *) addr;
+	int	mask;
+	unsigned long flags;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	save_flags_cli(flags);
+	*a &= ~mask;
+	restore_flags(flags);
+}
+
+extern __inline__ void change_bit(int nr, volatile void * addr)
+{
+	int mask;
+	unsigned long flags;
+	unsigned long *ADDR = (unsigned long *) addr;
+
+	ADDR += nr >> 5;
+	mask = 1 << (nr & 31);
+	save_flags_cli(flags);
+	*ADDR ^= mask;
+	restore_flags(flags);
+}
+
+extern __inline__ void __change_bit(int nr, volatile void * addr)
+{
+	int mask;
+	unsigned long *ADDR = (unsigned long *) addr;
+
+	ADDR += nr >> 5;
+	mask = 1 << (nr & 31);
+	*ADDR ^= mask;
+}
+
+extern __inline__ int test_and_set_bit(int nr, volatile void * addr)
+{
+	int	mask, retval;
+	volatile unsigned int *a = (volatile unsigned int *) addr;
+	unsigned long flags;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	save_flags_cli(flags);
+	retval = (mask & *a) != 0;
+	*a |= mask;
+	restore_flags(flags);
+
+	return retval;
+}
+
+extern __inline__ int __test_and_set_bit(int nr, volatile void * addr)
+{
+	int	mask, retval;
+	volatile unsigned int *a = (volatile unsigned int *) addr;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	retval = (mask & *a) != 0;
+	*a |= mask;
+	return retval;
+}
+
+extern __inline__ int test_and_clear_bit(int nr, volatile void * addr)
+{
+	int	mask, retval;
+	volatile unsigned int *a = (volatile unsigned int *) addr;
+	unsigned long flags;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	save_flags_cli(flags);
+	retval = (mask & *a) != 0;
+	*a &= ~mask;
+	restore_flags(flags);
+
+	return retval;
+}
+
+extern __inline__ int __test_and_clear_bit(int nr, volatile void * addr)
+{
+	int	mask, retval;
+	volatile unsigned int *a = (volatile unsigned int *) addr;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	retval = (mask & *a) != 0;
+	*a &= ~mask;
+	return retval;
+}
+
+extern __inline__ int test_and_change_bit(int nr, volatile void * addr)
+{
+	int	mask, retval;
+	volatile unsigned int *a = (volatile unsigned int *) addr;
+	unsigned long flags;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	save_flags_cli(flags);
+	retval = (mask & *a) != 0;
+	*a ^= mask;
+	restore_flags(flags);
+
+	return retval;
+}
+
+extern __inline__ int __test_and_change_bit(int nr, volatile void * addr)
+{
+	int	mask, retval;
+	volatile unsigned int *a = (volatile unsigned int *) addr;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	retval = (mask & *a) != 0;
+	*a ^= mask;
+	return retval;
+}
+
+/*
+ * This routine doesn't need to be atomic.
+ */
+extern __inline__ int __constant_test_bit(int nr, const volatile void * addr)
+{
+	return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr >> 5])) != 0;
+}
+
+extern __inline__ int __test_bit(int nr, volatile void * addr)
+{
+	int	* a = (int *) addr;
+	int	mask;
+
+	a += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	return ((mask & *a) != 0);
+}
+
+#define test_bit(nr,addr) \
+(__builtin_constant_p(nr) ? \
+ __constant_test_bit((nr),(addr)) : \
+ __test_bit((nr),(addr)))
+
+#define find_first_zero_bit(addr, size) \
+	find_next_zero_bit((addr), (size), 0)
+
+extern __inline__ int find_next_zero_bit (void * addr, int size, int offset)
+{
+	unsigned long *p = ((unsigned long *) addr) + (offset >> 5);
+	unsigned long result = offset & ~31UL;
+	unsigned long tmp;
+
+	if (offset >= size)
+		return size;
+	size -= result;
+	offset &= 31UL;
+	if (offset) {
+		tmp = *(p++);
+		tmp |= ~0UL >> (32-offset);
+		if (size < 32)
+			goto found_first;
+		if (~tmp)
+			goto found_middle;
+		size -= 32;
+		result += 32;
+	}
+	while (size & ~31UL) {
+		if (~(tmp = *(p++)))
+			goto found_middle;
+		result += 32;
+		size -= 32;
+	}
+	if (!size)
+		return result;
+	tmp = *p;
+
+found_first:
+	tmp |= ~0UL >> size;
+found_middle:
+	return result + ffz(tmp);
+}
+
+/*
+ * hweightN: returns the hamming weight (i.e. the number
+ * of bits set) of a N-bit word
+ */
+
+#define hweight32(x) generic_hweight32(x)
+#define hweight16(x) generic_hweight16(x)
+#define hweight8(x) generic_hweight8(x)
+
+
+extern __inline__ int ext2_set_bit(int nr, volatile void * addr)
+{
+	int		mask, retval;
+	unsigned long	flags;
+	volatile unsigned char	*ADDR = (unsigned char *) addr;
+
+	ADDR += nr >> 3;
+	mask = 1 << (nr & 0x07);
+	save_flags_cli(flags);
+	retval = (mask & *ADDR) != 0;
+	*ADDR |= mask;
+	restore_flags(flags);
+	return retval;
+}
+
+extern __inline__ int ext2_clear_bit(int nr, volatile void * addr)
+{
+	int		mask, retval;
+	unsigned long	flags;
+	volatile unsigned char	*ADDR = (unsigned char *) addr;
+
+	ADDR += nr >> 3;
+	mask = 1 << (nr & 0x07);
+	save_flags_cli(flags);
+	retval = (mask & *ADDR) != 0;
+	*ADDR &= ~mask;
+	restore_flags(flags);
+	return retval;
+}
+
+extern __inline__ int ext2_test_bit(int nr, const volatile void * addr)
+{
+	int			mask;
+	const volatile unsigned char	*ADDR = (const unsigned char *) addr;
+
+	ADDR += nr >> 3;
+	mask = 1 << (nr & 0x07);
+	return ((mask & *ADDR) != 0);
+}
+
+#define ext2_find_first_zero_bit(addr, size) \
+	ext2_find_next_zero_bit((addr), (size), 0)
+
+extern __inline__ unsigned long ext2_find_next_zero_bit(void *addr, unsigned long size, unsigned long offset)
+{
+	unsigned long *p = ((unsigned long *) addr) + (offset >> 5);
+	unsigned long result = offset & ~31UL;
+	unsigned long tmp;
+
+	if (offset >= size)
+		return size;
+	size -= result;
+	offset &= 31UL;
+	if(offset) {
+		/* We hold the little endian value in tmp, but then the
+		 * shift is illegal. So we could keep a big endian value
+		 * in tmp, like this:
+		 *
+		 * tmp = __swab32(*(p++));
+		 * tmp |= ~0UL >> (32-offset);
+		 *
+		 * but this would decrease preformance, so we change the
+		 * shift:
+		 */
+		tmp = *(p++);
+		tmp |= __swab32(~0UL >> (32-offset));
+		if(size < 32)
+			goto found_first;
+		if(~tmp)
+			goto found_middle;
+		size -= 32;
+		result += 32;
+	}
+	while(size & ~31UL) {
+		if(~(tmp = *(p++)))
+			goto found_middle;
+		result += 32;
+		size -= 32;
+	}
+	if(!size)
+		return result;
+	tmp = *p;
+
+found_first:
+	/* tmp is little endian, so we would have to swab the shift,
+	 * see above. But then we have to swab tmp below for ffz, so
+	 * we might as well do this here.
+	 */
+	return result + ffz(__swab32(tmp) | (~0UL << size));
+found_middle:
+	return result + ffz(__swab32(tmp));
+}
+
+/* Bitmap functions for the minix filesystem.  */
+#define minix_test_and_set_bit(nr,addr) test_and_set_bit(nr,addr)
+#define minix_set_bit(nr,addr) set_bit(nr,addr)
+#define minix_test_and_clear_bit(nr,addr) test_and_clear_bit(nr,addr)
+#define minix_test_bit(nr,addr) test_bit(nr,addr)
+#define minix_find_first_zero_bit(addr,size) find_first_zero_bit(addr,size)
+
+/**
+ * hweightN - returns the hamming weight of a N-bit word
+ * @x: the word to weigh
+ *
+ * The Hamming Weight of a number is the total number of bits set in it.
+ */
+
+#define hweight32(x) generic_hweight32(x)
+#define hweight16(x) generic_hweight16(x)
+#define hweight8(x) generic_hweight8(x)
+
+#endif /* __KERNEL__ */
+
+#endif /* _MICROBLAZE_BITOPS_H */
diff --git a/arch/microblaze/include/asm/byteorder.h b/arch/microblaze/include/asm/byteorder.h
new file mode 100644
index 0000000..a4a75b7
--- /dev/null
+++ b/arch/microblaze/include/asm/byteorder.h
@@ -0,0 +1,55 @@
+/*
+ * include/asm-microblaze/byteorder.h -- Endian id and conversion ops
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_BYTEORDER_H__
+#define __MICROBLAZE_BYTEORDER_H__
+
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+/* This is effectively a dupe of the arch-independent byteswap
+   code in include/linux/byteorder/swab.h, however we force a cast
+   of the result up to 32 bits.  This in turn forces the compiler
+   to explicitly clear the high 16 bits, which it wasn't doing otherwise.
+
+   I think this is a symptom of a bug in mb-gcc.  JW 20040303
+*/
+
+
+static __inline__ __u16 ___arch__swab16 (__u16 half_word)
+{
+	/* 32 bit temp to cast result, forcing clearing of high word */
+	__u32 temp;
+
+	temp = ((half_word & 0x00FFU) << 8) | ((half_word & 0xFF00U) >> 8);
+
+	return (__u16) temp;
+}
+
+#define __arch__swab16(x) ___arch__swab16(x)
+
+/* Microblaze has no arch-specific endian conversion insns */
+
+#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+#  define __BYTEORDER_HAS_U64__
+#  define __SWAB_64_THRU_32__
+#endif
+
+#endif /* __GNUC__ */
+
+#include <linux/byteorder/big_endian.h>
+
+#endif /* __MICROBLAZE_BYTEORDER_H__ */
diff --git a/arch/microblaze/include/asm/config.h b/arch/microblaze/include/asm/config.h
new file mode 100644
index 0000000..8a9064b
--- /dev/null
+++ b/arch/microblaze/include/asm/config.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef _ASM_CONFIG_H_
+#define _ASM_CONFIG_H_
+
+/* Relocation to SDRAM works on all Microblaze boards */
+#define CONFIG_RELOC_FIXUP_WORKS
+
+#endif
diff --git a/arch/microblaze/include/asm/errno.h b/arch/microblaze/include/asm/errno.h
new file mode 100644
index 0000000..4c82b50
--- /dev/null
+++ b/arch/microblaze/include/asm/errno.h
@@ -0,0 +1 @@
+#include <asm-generic/errno.h>
diff --git a/arch/microblaze/include/asm/global_data.h b/arch/microblaze/include/asm/global_data.h
new file mode 100644
index 0000000..ec7837f
--- /dev/null
+++ b/arch/microblaze/include/asm/global_data.h
@@ -0,0 +1,61 @@
+/*
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef	__ASM_GBL_DATA_H
+#define __ASM_GBL_DATA_H
+/*
+ * The following data structure is placed in some memory wich is
+ * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
+ * some locked parts of the data cache) to allow for a minimum set of
+ * global variables during system initialization (until we have set
+ * up the memory controller so that we can use RAM).
+ *
+ * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t)
+ */
+
+typedef	struct	global_data {
+	bd_t		*bd;
+	unsigned long	flags;
+	unsigned long	baudrate;
+	unsigned long	have_console;	/* serial_init() was called */
+	unsigned long	env_addr;	/* Address  of Environment struct */
+	unsigned long	env_valid;	/* Checksum of Environment valid? */
+	unsigned long	fb_base;	/* base address of frame buffer */
+	void		**jt;		/* jump table */
+} gd_t;
+
+/*
+ * Global Data Flags
+ */
+#define	GD_FLG_RELOC	0x00001		/* Code was relocated to RAM		*/
+#define	GD_FLG_DEVINIT	0x00002		/* Devices have been initialized	*/
+#define	GD_FLG_SILENT	0x00004		/* Silent mode				*/
+#define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
+#define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
+#define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
+
+#define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r31")
+
+#endif /* __ASM_GBL_DATA_H */
diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h
new file mode 100644
index 0000000..7e190d1
--- /dev/null
+++ b/arch/microblaze/include/asm/io.h
@@ -0,0 +1,163 @@
+/*
+ * include/asm-microblaze/io.h -- Misc I/O operations
+ *
+ *  Copyright (C) 2003     John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001,02  NEC Corporation
+ *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_IO_H__
+#define __MICROBLAZE_IO_H__
+
+#include <asm/types.h>
+
+#define IO_SPACE_LIMIT 0xFFFFFFFF
+
+#define readb(addr) \
+  ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
+#define readw(addr) \
+  ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
+#define readl(addr) \
+  ({ unsigned long __v = (*(volatile unsigned long *) (addr)); __v; })
+
+#define writeb(b, addr) \
+  (void)((*(volatile unsigned char *) (addr)) = (b))
+#define writew(b, addr) \
+  (void)((*(volatile unsigned short *) (addr)) = (b))
+#define writel(b, addr) \
+  (void)((*(volatile unsigned int *) (addr)) = (b))
+
+#define memset_io(a,b,c)        memset((void *)(a),(b),(c))
+#define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
+#define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
+
+#define inb(addr)	readb (addr)
+#define inw(addr)	readw (addr)
+#define inl(addr)	readl (addr)
+#define outb(x, addr)	((void) writeb (x, addr))
+#define outw(x, addr)	((void) writew (x, addr))
+#define outl(x, addr)	((void) writel (x, addr))
+
+/* Some #definitions to keep strange Xilinx code happy */
+#define in_8(addr)	readb (addr)
+#define in_be16(addr)	readw (addr)
+#define in_be32(addr)	readl (addr)
+
+#define out_8(addr,x )	outb (x,addr)
+#define out_be16(addr,x )	outw (x,addr)
+#define out_be32(addr,x )	outl (x,addr)
+
+
+#define inb_p(port)		inb((port))
+#define outb_p(val, port)	outb((val), (port))
+#define inw_p(port)		inw((port))
+#define outw_p(val, port)	outw((val), (port))
+#define inl_p(port)		inl((port))
+#define outl_p(val, port)	outl((val), (port))
+
+/* Some defines to keep the MTD flash drivers happy */
+
+#define __raw_readb readb
+#define __raw_readw readw
+#define __raw_readl readl
+#define __raw_writeb writeb
+#define __raw_writew writew
+#define __raw_writel writel
+
+static inline void io_insb (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned char *p = dst;
+	while (count--)
+		*p++ = inb (port);
+}
+static inline void io_insw (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned short *p = dst;
+	while (count--)
+		*p++ = inw (port);
+}
+static inline void io_insl (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned long *p = dst;
+	while (count--)
+		*p++ = inl (port);
+}
+
+static inline void
+io_outsb (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned char *p = src;
+	while (count--)
+		outb (*p++, port);
+}
+static inline void
+io_outsw (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned short *p = src;
+	while (count--)
+		outw (*p++, port);
+}
+static inline void
+io_outsl (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned long *p = src;
+	while (count--)
+		outl (*p++, port);
+}
+
+#define outsb(a,b,l) io_outsb(a,b,l)
+#define outsw(a,b,l) io_outsw(a,b,l)
+#define outsl(a,b,l) io_outsl(a,b,l)
+
+#define insb(a,b,l) io_insb(a,b,l)
+#define insw(a,b,l) io_insw(a,b,l)
+#define insl(a,b,l) io_insl(a,b,l)
+
+
+#define iounmap(addr)				((void)0)
+#define ioremap(physaddr, size)			(physaddr)
+#define ioremap_nocache(physaddr, size)		(physaddr)
+#define ioremap_writethrough(physaddr, size)	(physaddr)
+#define ioremap_fullcache(physaddr, size)	(physaddr)
+
+static inline void sync(void)
+{
+}
+
+/*
+ * Given a physical address and a length, return a virtual address
+ * that can be used to access the memory range with the caching
+ * properties specified by "flags".
+ */
+#define MAP_NOCACHE	(0)
+#define MAP_WRCOMBINE	(0)
+#define MAP_WRBACK	(0)
+#define MAP_WRTHROUGH	(0)
+
+static inline void *
+map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
+{
+	return (void *)paddr;
+}
+
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long flags)
+{
+
+}
+
+static inline phys_addr_t virt_to_phys(void * vaddr)
+{
+	return (phys_addr_t)(vaddr);
+}
+
+#endif /* __MICROBLAZE_IO_H__ */
diff --git a/arch/microblaze/include/asm/microblaze_intc.h b/arch/microblaze/include/asm/microblaze_intc.h
new file mode 100644
index 0000000..4c385aa
--- /dev/null
+++ b/arch/microblaze/include/asm/microblaze_intc.h
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal  SIMEK <monstr@monstr.cz>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+typedef volatile struct microblaze_intc_t {
+	int isr; /* interrupt status register */
+	int ipr; /* interrupt pending register */
+	int ier; /* interrupt enable register */
+	int iar; /* interrupt acknowledge register */
+	int sie; /* set interrupt enable bits */
+	int cie; /* clear interrupt enable bits */
+	int ivr; /* interrupt vector register */
+	int mer; /* master enable register */
+} microblaze_intc_t;
+
+struct irq_action {
+	interrupt_handler_t *handler; /* pointer to interrupt rutine */
+	void *arg;
+	int count; /* number of interrupt */
+};
+
+void install_interrupt_handler (int irq, interrupt_handler_t * hdlr,
+				       void *arg);
diff --git a/arch/microblaze/include/asm/microblaze_timer.h b/arch/microblaze/include/asm/microblaze_timer.h
new file mode 100644
index 0000000..844c8db
--- /dev/null
+++ b/arch/microblaze/include/asm/microblaze_timer.h
@@ -0,0 +1,41 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal  SIMEK <monstr@monstr.cz>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#define TIMER_ENABLE_ALL    0x400 /* ENALL */
+#define TIMER_PWM           0x200 /* PWMA0 */
+#define TIMER_INTERRUPT     0x100 /* T0INT */
+#define TIMER_ENABLE        0x080 /* ENT0 */
+#define TIMER_ENABLE_INTR   0x040 /* ENIT0 */
+#define TIMER_RESET         0x020 /* LOAD0 */
+#define TIMER_RELOAD        0x010 /* ARHT0 */
+#define TIMER_EXT_CAPTURE   0x008 /* CAPT0 */
+#define TIMER_EXT_COMPARE   0x004 /* GENT0 */
+#define TIMER_DOWN_COUNT    0x002 /* UDT0 */
+#define TIMER_CAPTURE_MODE  0x001 /* MDT0 */
+
+typedef volatile struct microblaze_timer_t {
+	int control; /* control/statuc register TCSR */
+	int loadreg; /* load register TLR */
+	int counter; /* timer/counter register */
+} microblaze_timer_t;
diff --git a/arch/microblaze/include/asm/posix_types.h b/arch/microblaze/include/asm/posix_types.h
new file mode 100644
index 0000000..9a2cc66
--- /dev/null
+++ b/arch/microblaze/include/asm/posix_types.h
@@ -0,0 +1,76 @@
+/*
+ * include/asm-microblaze/posix_types.h -- Kernel versions of standard types
+ *
+ *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001,2002  NEC Corporation
+ *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_POSIX_TYPES_H__
+#define __MICROBLAZE_POSIX_TYPES_H__
+
+#include <asm/bitops.h>
+
+
+typedef unsigned int	__kernel_dev_t;
+typedef unsigned long	__kernel_ino_t;
+typedef unsigned long long __kernel_ino64_t;
+typedef unsigned int	__kernel_mode_t;
+typedef unsigned int	__kernel_nlink_t;
+typedef long		__kernel_off_t;
+typedef long long	__kernel_loff_t;
+typedef int		__kernel_pid_t;
+typedef unsigned short	__kernel_ipc_pid_t;
+typedef unsigned int	__kernel_uid_t;
+typedef unsigned int	__kernel_gid_t;
+typedef unsigned int	__kernel_size_t;
+typedef int		__kernel_ssize_t;
+typedef int		__kernel_ptrdiff_t;
+typedef long		__kernel_time_t;
+typedef long		__kernel_suseconds_t;
+typedef long		__kernel_clock_t;
+typedef int		__kernel_daddr_t;
+typedef char *		__kernel_caddr_t;
+typedef unsigned short	__kernel_uid16_t;
+typedef unsigned short	__kernel_gid16_t;
+typedef unsigned int	__kernel_uid32_t;
+typedef unsigned int	__kernel_gid32_t;
+
+typedef unsigned short	__kernel_old_uid_t;
+typedef unsigned short	__kernel_old_gid_t;
+
+
+typedef struct {
+#if defined(__KERNEL__) || defined(__USE_ALL)
+	int	val[2];
+#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */
+	int	__val[2];
+#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */
+} __kernel_fsid_t;
+
+
+#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
+
+#undef	__FD_SET
+#define __FD_SET(fd, fd_set) \
+  __set_bit (fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits)
+#undef __FD_CLR
+#define __FD_CLR(fd, fd_set) \
+  __clear_bit (fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits)
+#undef	__FD_ISSET
+#define __FD_ISSET(fd, fd_set) \
+  __test_bit (fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits)
+#undef	__FD_ZERO
+#define __FD_ZERO(fd_set) \
+  memset (fd_set, 0, sizeof (*(fd_set *)fd_set))
+
+#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) */
+
+#endif /* __MICROBLAZE_POSIX_TYPES_H__ */
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
new file mode 100644
index 0000000..78b8976
--- /dev/null
+++ b/arch/microblaze/include/asm/processor.h
@@ -0,0 +1 @@
+/* FIXME: Implement this! */
diff --git a/arch/microblaze/include/asm/ptrace.h b/arch/microblaze/include/asm/ptrace.h
new file mode 100644
index 0000000..b796d4f
--- /dev/null
+++ b/arch/microblaze/include/asm/ptrace.h
@@ -0,0 +1,116 @@
+/*
+ * include/asm-microblaze/ptrace.h -- Access to CPU registers
+ *
+ *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001,2002  NEC Corporation
+ *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_PTRACE_H__
+#define __MICROBLAZE_PTRACE_H__
+
+
+/* Microblaze general purpose registers with special meanings.  */
+#define GPR_ZERO	0	/* constant zero */
+#define GPR_ASM		18	/* reserved for assembler */
+#define GPR_SP		1	/* stack pointer */
+#define GPR_GP		2	/* global data pointer */
+#define GPR_EP		30	/* `element pointer' */
+#define GPR_LP		15	/* link pointer (current return address) */
+
+/* These aren't official names, but they make some code more descriptive.  */
+#define GPR_ARG0	5
+#define GPR_ARG1	6
+#define GPR_ARG2	7
+#define GPR_ARG3	8
+#define GPR_ARG4	9
+#define GPR_ARG5	10
+#define GPR_RVAL0	3
+#define GPR_RVAL1	4
+#define GPR_RVAL	GPR_RVAL0
+
+#define NUM_GPRS	32
+
+/* `system' registers.  */
+/* Note these are old v850 values, microblaze has many fewer */
+#define SR_EIPC		0
+#define SR_EIPSW	1
+#define SR_FEPC		2
+#define SR_FEPSW	3
+#define SR_ECR		4
+#define SR_PSW		5
+#define SR_CTPC		16
+#define SR_CTPSW	17
+#define SR_DBPC		18
+#define SR_DBPSW	19
+#define SR_CTBP		20
+#define SR_DIR		21
+#define SR_ASID		23
+
+
+#ifndef __ASSEMBLY__
+
+typedef unsigned long microblaze_reg_t;
+
+/* How processor state is stored on the stack during a syscall/signal.
+   If you change this structure, change the associated assembly-language
+   macros below too (PT_*)!  */
+struct pt_regs
+{
+	/* General purpose registers.  */
+	microblaze_reg_t gpr[NUM_GPRS];
+
+	microblaze_reg_t pc;		/* program counter */
+	microblaze_reg_t psw;		/* program status word */
+
+	microblaze_reg_t kernel_mode;	/* 1 if in `kernel mode', 0 if user mode */
+	microblaze_reg_t single_step;	/* 1 if in single step mode */
+};
+
+
+#define instruction_pointer(regs)	((regs)->pc)
+#define user_mode(regs)			(!(regs)->kernel_mode)
+
+/* When a struct pt_regs is used to save user state for a system call in
+   the kernel, the system call is stored in the space for R0 (since it's
+   never used otherwise, R0 being a constant 0).  Non-system-calls
+   simply store 0 there.  */
+#define PT_REGS_SYSCALL(regs)		(regs)->gpr[0]
+#define PT_REGS_SET_SYSCALL(regs, val)	((regs)->gpr[0] = (val))
+
+#endif /* !__ASSEMBLY__ */
+
+
+/* The number of bytes used to store each register.  */
+#define _PT_REG_SIZE	4
+
+/* Offset of a general purpose register in a stuct pt_regs.  */
+#define PT_GPR(num)	((num) * _PT_REG_SIZE)
+
+/* Offsets of various special registers & fields in a struct pt_regs.  */
+#define NUM_SPECIAL	4
+#define PT_PC		((NUM_GPRS + 0) * _PT_REG_SIZE)
+#define PT_PSW		((NUM_GPRS + 1) * _PT_REG_SIZE)
+#define PT_KERNEL_MODE	((NUM_GPRS + 2) * _PT_REG_SIZE)
+#define PT_SINGLESTEP	((NUM_GPRS + 3) * _PT_REG_SIZE)
+
+#define PT_SYSCALL	PT_GPR(0)
+
+/* Size of struct pt_regs, including alignment.  */
+#define PT_SIZE		((NUM_GPRS + NUM_SPECIAL) * _PT_REG_SIZE)
+
+/* These are `magic' values for PTRACE_PEEKUSR that return info about where
+   a process is located in memory.  */
+#define PT_TEXT_ADDR    (PT_SIZE + 1)
+#define PT_TEXT_LEN     (PT_SIZE + 2)
+#define PT_DATA_ADDR    (PT_SIZE + 3)
+#define PT_DATA_LEN     (PT_SIZE + 4)
+
+#endif /* __MICROBLAZE_PTRACE_H__ */
diff --git a/arch/microblaze/include/asm/string.h b/arch/microblaze/include/asm/string.h
new file mode 100644
index 0000000..724f5bd
--- /dev/null
+++ b/arch/microblaze/include/asm/string.h
@@ -0,0 +1,31 @@
+/*
+ * include/asm-microblaze/string.h -- Architecture specific string routines
+ *
+ *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001,2002  NEC Corporation
+ *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_STRING_H__
+#define __MICROBLAZE_STRING_H__
+
+#if 0
+#define __HAVE_ARCH_BCOPY
+#define __HAVE_ARCH_MEMCPY
+#define __HAVE_ARCH_MEMSET
+#define __HAVE_ARCH_MEMMOVE
+
+extern void *memcpy (void *, const void *, __kernel_size_t);
+extern void bcopy (const char *, char *, int);
+extern void *memset (void *, int, __kernel_size_t);
+extern void *memmove (void *, const void *, __kernel_size_t);
+#endif
+
+#endif /* __MICROBLAZE_STRING_H__ */
diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h
new file mode 100644
index 0000000..0297a11
--- /dev/null
+++ b/arch/microblaze/include/asm/system.h
@@ -0,0 +1,161 @@
+/*
+ * include/asm-microblaze/system.h -- Low-level interrupt/thread ops
+ *
+ *  Copyright (C) 2003	John Williams (jwilliams@itee.uq.edu.au)
+ *			based upon microblaze version
+ *  Copyright (C) 2001	NEC Corporation
+ *  Copyright (C) 2001	Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_SYSTEM_H__
+#define __MICROBLAZE_SYSTEM_H__
+
+#if 0
+#include <linux/linkage.h>
+#endif
+#include <asm/ptrace.h>
+
+#define prepare_to_switch()	do { } while (0)
+
+/*
+ * switch_to(n) should switch tasks to task ptr, first checking that
+ * ptr isn't the current task, in which case it does nothing.
+ */
+struct thread_struct;
+extern void *switch_thread (struct thread_struct *last,
+			    struct thread_struct *next);
+#define switch_to(prev,next,last) do {					\
+	if (prev != next) {						\
+		(last) = switch_thread (&prev->thread, &next->thread);	\
+	}								\
+} while (0)
+
+
+/* Enable/disable interrupts.  */
+#define __sti() \
+{								\
+	register unsigned tmp;					\
+	__asm__ __volatile__ ("					\
+			mfs	%0, rmsr;			\
+			ori	%0, %0, 2;			\
+			mts	rmsr, %0"			\
+			: "=r" (tmp)				\
+			:					\
+			: "memory");				\
+}
+
+#define __cli() \
+{								\
+	register unsigned tmp;					\
+	__asm__ __volatile__ ("					\
+			mfs	%0, rmsr;			\
+			andi	%0, %0, ~2;			\
+			mts	rmsr, %0"			\
+			: "=r" (tmp)				\
+			:					\
+			: "memory");				\
+}
+
+#define __save_flags(flags) \
+	__asm__ __volatile__ ("mfs	%0, rmsr" : "=r" (flags))
+#define __restore_flags(flags) \
+	__asm__ __volatile__ ("mts	rmsr, %0" :: "r" (flags))
+
+#define __save_flags_cli(flags) \
+{								\
+	register unsigned tmp;					\
+	__asm__ __volatile__ ("					\
+			mfs	%0, rmsr;			\
+			andi	%1, %0, ~2;			\
+			mts	rmsr, %1;"			\
+			: "=r" (flags), "=r" (tmp)		\
+			:					\
+			: "memory");				\
+}
+
+#define __save_flags_sti(flags)					\
+{								\
+	register unsigned tmp;					\
+	__asm__ __volatile__ ("					\
+			mfs	%0, rmsr;			\
+			ori	%1, %0, 2;			\
+			mts	rmsr, %1;"			\
+			: "=r" (flags) ,"=r" (tmp)		\
+			:					\
+			: "memory");				\
+}
+
+/* For spinlocks etc */
+#define local_irq_save(flags)	__save_flags_cli (flags)
+#define local_irq_set(flags)	__save_flags_sti (flags)
+#define local_irq_restore(flags) __restore_flags (flags)
+#define local_irq_disable()	__cli ()
+#define local_irq_enable()	__sti ()
+
+#define cli()			__cli ()
+#define sti()			__sti ()
+#define save_flags(flags)	__save_flags (flags)
+#define restore_flags(flags)	__restore_flags (flags)
+#define save_flags_cli(flags)	__save_flags_cli (flags)
+
+/*
+ * Force strict CPU ordering.
+ * Not really required on microblaze...
+ */
+#define nop()			__asm__ __volatile__ ("nop")
+#define mb()			__asm__ __volatile__ ("nop" ::: "memory")
+#define rmb()			mb ()
+#define wmb()			mb ()
+#define set_mb(var, value)	do { var = value; mb(); } while (0)
+#define set_wmb(var, value)	do { var = value; wmb (); } while (0)
+
+#ifdef CONFIG_SMP
+#define smp_mb()	mb ()
+#define smp_rmb()	rmb ()
+#define smp_wmb()	wmb ()
+#else
+#define smp_mb()	barrier ()
+#define smp_rmb()	barrier ()
+#define smp_wmb()	barrier ()
+#endif
+
+#define xchg(ptr, with) \
+  ((__typeof__ (*(ptr)))__xchg ((unsigned long)(with), (ptr), sizeof (*(ptr))))
+#define tas(ptr) (xchg ((ptr), 1))
+
+extern inline unsigned long __xchg (unsigned long with,
+				    __volatile__ void *ptr, int size)
+{
+	unsigned long tmp, flags;
+
+	save_flags_cli (flags);
+
+	switch (size) {
+	case 1:
+		tmp = *(unsigned char *)ptr;
+		*(unsigned char *)ptr = with;
+		break;
+	case 2:
+		tmp = *(unsigned short *)ptr;
+		*(unsigned short *)ptr = with;
+		break;
+	case 4:
+		tmp = *(unsigned long *)ptr;
+		*(unsigned long *)ptr = with;
+		break;
+	}
+
+	restore_flags (flags);
+
+	return tmp;
+}
+
+#endif /* __MICROBLAZE_SYSTEM_H__ */
diff --git a/arch/microblaze/include/asm/types.h b/arch/microblaze/include/asm/types.h
new file mode 100644
index 0000000..77094f6
--- /dev/null
+++ b/arch/microblaze/include/asm/types.h
@@ -0,0 +1,60 @@
+#ifndef _ASM_TYPES_H
+#define _ASM_TYPES_H
+
+/*
+ * This file is never included by application software unless
+ * explicitly requested (e.g., via linux/types.h) in which case the
+ * application is Linux specific so (user-) name space pollution is
+ * not a major issue.  However, for interoperability, libraries still
+ * need to be careful to avoid a name clashes.
+ */
+
+typedef unsigned short umode_t;
+
+/*
+ * __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
+ * header files exported to user space
+ */
+
+typedef __signed__ char __s8;
+typedef unsigned char __u8;
+
+typedef __signed__ short __s16;
+typedef unsigned short __u16;
+
+typedef __signed__ int __s32;
+typedef unsigned int __u32;
+
+#if defined(__GNUC__)
+__extension__ typedef __signed__ long long __s64;
+__extension__ typedef unsigned long long __u64;
+#endif
+
+/*
+ * These aren't exported outside the kernel to avoid name space clashes
+ */
+#ifdef __KERNEL__
+
+typedef signed char s8;
+typedef unsigned char u8;
+
+typedef signed short s16;
+typedef unsigned short u16;
+
+typedef signed int s32;
+typedef unsigned int u32;
+
+typedef signed long long s64;
+typedef unsigned long long u64;
+
+#define BITS_PER_LONG 32
+
+/* Dma addresses are 32-bits wide.  */
+
+typedef u32 dma_addr_t;
+
+typedef unsigned long phys_addr_t;
+typedef unsigned long phys_size_t;
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_TYPES_H */
diff --git a/arch/microblaze/include/asm/u-boot.h b/arch/microblaze/include/asm/u-boot.h
new file mode 100644
index 0000000..543a6b1
--- /dev/null
+++ b/arch/microblaze/include/asm/u-boot.h
@@ -0,0 +1,48 @@
+/*
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ ********************************************************************
+ * NOTE: This header file defines an interface to U-Boot. Including
+ * this (unmodified) header file in another file is considered normal
+ * use of U-Boot, and does *not* fall under the heading of "derived
+ * work".
+ ********************************************************************
+ */
+
+#ifndef _U_BOOT_H_
+#define _U_BOOT_H_
+
+typedef struct bd_info {
+	unsigned long	bi_memstart;	/* start of DRAM memory */
+	phys_size_t	bi_memsize;	/* size	 of DRAM memory in bytes */
+	unsigned long	bi_flashstart;	/* start of FLASH memory */
+	unsigned long	bi_flashsize;	/* size	 of FLASH memory */
+	unsigned long	bi_flashoffset; /* reserved area for startup monitor */
+	unsigned long	bi_sramstart;	/* start of SRAM memory */
+	unsigned long	bi_sramsize;	/* size	 of SRAM memory */
+	unsigned long	bi_ip_addr;	/* IP Address */
+	unsigned long	bi_baudrate;	/* Console Baudrate */
+} bd_t;
+
+
+#endif	/* _U_BOOT_H_ */
diff --git a/arch/microblaze/include/asm/unaligned.h b/arch/microblaze/include/asm/unaligned.h
new file mode 100644
index 0000000..785c2e9
--- /dev/null
+++ b/arch/microblaze/include/asm/unaligned.h
@@ -0,0 +1,16 @@
+#ifndef _ASM_MICROBLAZE_UNALIGNED_H
+#define _ASM_MICROBLAZE_UNALIGNED_H
+
+#ifdef __KERNEL__
+
+/*
+ * The Microblaze can do unaligned accesses itself in big endian mode.
+ */
+#include <linux/unaligned/access_ok.h>
+#include <linux/unaligned/generic.h>
+
+#define get_unaligned	__get_unaligned_be
+#define put_unaligned	__put_unaligned_be
+
+#endif	/* __KERNEL__ */
+#endif	/* _ASM_MICROBLAZE_UNALIGNED_H */
diff --git a/arch/microblaze/lib/Makefile b/arch/microblaze/lib/Makefile
new file mode 100644
index 0000000..9b0f296
--- /dev/null
+++ b/arch/microblaze/lib/Makefile
@@ -0,0 +1,48 @@
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(ARCH).a
+
+SOBJS-y	+=
+
+COBJS-y	+= board.o
+COBJS-y	+= bootm.o
+COBJS-y	+= cache.o
+COBJS-y	+= time.o
+
+SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/microblaze/lib/board.c b/arch/microblaze/lib/board.c
new file mode 100644
index 0000000..d4baea9
--- /dev/null
+++ b/arch/microblaze/lib/board.c
@@ -0,0 +1,162 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <timestamp.h>
+#include <version.h>
+#include <watchdog.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")";
+
+#ifdef CONFIG_SYS_GPIO_0
+extern int gpio_init (void);
+#endif
+#ifdef CONFIG_SYS_INTC_0
+extern int interrupts_init (void);
+#endif
+#if defined(CONFIG_CMD_NET)
+extern int eth_init (bd_t * bis);
+#endif
+
+/*
+ * All attempts to come up with a "common" initialization sequence
+ * that works for all boards and architectures failed: some of the
+ * requirements are just _too_ different. To get rid of the resulting
+ * mess of board dependend #ifdef'ed code we now make the whole
+ * initialization sequence configurable to the user.
+ *
+ * The requirements for any new initalization function is simple: it
+ * receives a pointer to the "global data" structure as it's only
+ * argument, and returns an integer return code, where 0 means
+ * "continue" and != 0 means "fatal error, hang the system".
+ */
+typedef int (init_fnc_t) (void);
+
+init_fnc_t *init_sequence[] = {
+	env_init,
+	serial_init,
+#ifdef CONFIG_SYS_GPIO_0
+	gpio_init,
+#endif
+#ifdef CONFIG_SYS_INTC_0
+	interrupts_init,
+#endif
+	NULL,
+};
+
+void board_init (void)
+{
+	bd_t *bd;
+	init_fnc_t **init_fnc_ptr;
+	gd = (gd_t *) CONFIG_SYS_GBL_DATA_OFFSET;
+#if defined(CONFIG_CMD_FLASH)
+	ulong flash_size = 0;
+#endif
+	asm ("nop");	/* FIXME gd is not initialize - wait */
+	memset ((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
+	gd->bd = (bd_t *) (gd + 1);	/* At end of global data */
+	gd->baudrate = CONFIG_BAUDRATE;
+	bd = gd->bd;
+	bd->bi_baudrate = CONFIG_BAUDRATE;
+	bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
+	bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
+	gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
+
+	/*
+	 * The Malloc area is immediately below the monitor copy in DRAM
+	 * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off
+	 * as our monitory code is run from SDRAM
+	 */
+	mem_malloc_init (CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
+
+	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+		WATCHDOG_RESET ();
+		if ((*init_fnc_ptr) () != 0) {
+			hang ();
+		}
+	}
+
+	puts ("SDRAM :\n");
+	printf ("\t\tIcache:%s\n", icache_status() ? "OK" : "FAIL");
+	printf ("\t\tDcache:%s\n", dcache_status() ? "OK" : "FAIL");
+	printf ("\tU-Boot Start:0x%08x\n", TEXT_BASE);
+
+#if defined(CONFIG_CMD_FLASH)
+	puts ("FLASH: ");
+	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
+	if (0 < (flash_size = flash_init ())) {
+		bd->bi_flashsize = flash_size;
+		bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + flash_size;
+# ifdef CONFIG_SYS_FLASH_CHECKSUM
+		print_size (flash_size, "");
+		/*
+		 * Compute and print flash CRC if flashchecksum is set to 'y'
+		 *
+		 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
+		 */
+		s = getenv ("flashchecksum");
+		if (s && (*s == 'y')) {
+			printf ("  CRC: %08X",
+				crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
+			);
+		}
+		putc ('\n');
+# else	/* !CONFIG_SYS_FLASH_CHECKSUM */
+		print_size (flash_size, "\n");
+# endif /* CONFIG_SYS_FLASH_CHECKSUM */
+	} else {
+		puts ("Flash init FAILED");
+		bd->bi_flashstart = 0;
+		bd->bi_flashsize = 0;
+		bd->bi_flashoffset = 0;
+	}
+#endif
+
+#if defined(CONFIG_CMD_NET)
+	/* IP Address */
+	bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
+	eth_init (bd);
+#endif
+
+	/* relocate environment function pointers etc. */
+	env_relocate ();
+
+	/* main_loop */
+	for (;;) {
+		WATCHDOG_RESET ();
+		main_loop ();
+	}
+}
+
+void hang (void)
+{
+	puts ("### ERROR ### Please RESET the board ###\n");
+	for (;;) ;
+}
diff --git a/arch/microblaze/lib/bootm.c b/arch/microblaze/lib/bootm.c
new file mode 100644
index 0000000..bce4774
--- /dev/null
+++ b/arch/microblaze/lib/bootm.c
@@ -0,0 +1,57 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <image.h>
+#include <u-boot/zlib.h>
+#include <asm/byteorder.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
+{
+	/* First parameter is mapped to $r5 for kernel boot args */
+	void	(*theKernel) (char *);
+	char	*commandline = getenv ("bootargs");
+
+	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
+		return 1;
+
+	theKernel = (void (*)(char *))images->ep;
+
+	show_boot_progress (15);
+
+#ifdef DEBUG
+	printf ("## Transferring control to Linux (at address %08lx) ...\n",
+		(ulong) theKernel);
+#endif
+
+	theKernel (commandline);
+	/* does not return */
+
+	return 1;
+}
diff --git a/arch/microblaze/lib/cache.c b/arch/microblaze/lib/cache.c
new file mode 100644
index 0000000..4b2e8e3
--- /dev/null
+++ b/arch/microblaze/lib/cache.c
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+void flush_cache (ulong addr, ulong size)
+{
+	int i;
+	for (i = 0; i < size; i += 4)
+		asm volatile (
+#ifdef CONFIG_ICACHE
+				"wic	%0, r0;"
+#endif
+				"nop;"
+#ifdef CONFIG_DCACHE
+				"wdc	%0, r0;"
+#endif
+				"nop;"
+				:
+				: "r" (addr + i)
+				: "memory");
+}
diff --git a/arch/microblaze/lib/time.c b/arch/microblaze/lib/time.c
new file mode 100644
index 0000000..da016a0
--- /dev/null
+++ b/arch/microblaze/lib/time.c
@@ -0,0 +1,42 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_SYS_TIMER_0
+void __udelay (unsigned long usec)
+{
+	int i;
+	i = get_timer (0);
+	while ((get_timer (0) - i) < (usec / 1000)) ;
+}
+#else
+void __udelay (unsigned long usec)
+{
+	unsigned int i;
+	for (i = 0; i < (usec * CONFIG_XILINX_CLOCK_FREQ / 10000000); i++);
+}
+#endif