Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

21 files changed, 2323 insertions, 0 deletions

diff --git a/arch/mips/lasat/Makefile b/arch/mips/lasat/Makefile
new file mode 100644
index 00000000000..0d5aec43672
--- /dev/null
+++ b/arch/mips/lasat/Makefile
@@ -0,0 +1,14 @@
+#
+# Makefile for the LASAT specific kernel interface routines under Linux.
+#
+
+obj-y	 			+= reset.o setup.o prom.o lasat_board.o \
+				   at93c.o interrupt.o lasatIRQ.o
+
+obj-$(CONFIG_LASAT_SYSCTL)	+= sysctl.o
+obj-$(CONFIG_DS1603)		+= ds1603.o
+obj-$(CONFIG_PICVUE)		+= picvue.o
+obj-$(CONFIG_PICVUE_PROC)	+= picvue_proc.o
+
+clean:
+	make -C image clean
diff --git a/arch/mips/lasat/at93c.c b/arch/mips/lasat/at93c.c
new file mode 100644
index 00000000000..f6add041ebe
--- /dev/null
+++ b/arch/mips/lasat/at93c.c
@@ -0,0 +1,148 @@
+/* 
+ * Atmel AT93C46 serial eeprom driver
+ *
+ * Brian Murphy <brian.murphy@eicon.com> 
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <asm/lasat/lasat.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include "at93c.h"
+
+#define AT93C_ADDR_SHIFT	7
+#define AT93C_ADDR_MAX		((1 << AT93C_ADDR_SHIFT) - 1)
+#define AT93C_RCMD		(0x6 << AT93C_ADDR_SHIFT)
+#define AT93C_WCMD		(0x5 << AT93C_ADDR_SHIFT)
+#define AT93C_WENCMD		0x260
+#define AT93C_WDSCMD		0x200
+
+struct at93c_defs *at93c;
+
+static void at93c_reg_write(u32 val) 
+{
+	*at93c->reg = val;
+}
+
+static u32 at93c_reg_read(void) 
+{
+	u32 tmp = *at93c->reg;
+	return tmp;
+}
+
+static u32 at93c_datareg_read(void)
+{
+	u32 tmp = *at93c->rdata_reg;
+	return tmp;
+}
+
+static void at93c_cycle_clk(u32 data)
+{
+	at93c_reg_write(data | at93c->clk);
+	lasat_ndelay(250);
+	at93c_reg_write(data & ~at93c->clk);
+	lasat_ndelay(250);
+}
+
+static void at93c_write_databit(u8 bit)
+{
+	u32 data = at93c_reg_read();
+	if (bit)
+		data |= 1 << at93c->wdata_shift;
+	else
+		data &= ~(1 << at93c->wdata_shift);
+
+	at93c_reg_write(data);
+	lasat_ndelay(100);
+	at93c_cycle_clk(data);
+}
+
+static unsigned int at93c_read_databit(void)
+{
+	u32 data;
+
+	at93c_cycle_clk(at93c_reg_read());
+	data = (at93c_datareg_read() >> at93c->rdata_shift) & 1;
+	return data;
+}
+
+static u8 at93c_read_byte(void)
+{
+	int i;
+	u8 data = 0;
+
+	for (i = 0; i<=7; i++) {
+		data <<= 1;
+		data |= at93c_read_databit();
+	}
+	return data;
+}
+
+static void at93c_write_bits(u32 data, int size)
+{               
+	int i;
+	int shift = size - 1;
+	u32 mask = (1 << shift);
+
+	for (i = 0; i < size; i++) {
+		at93c_write_databit((data & mask) >> shift);
+		data <<= 1;
+	}
+}       
+
+static void at93c_init_op(void)
+{
+	at93c_reg_write((at93c_reg_read() | at93c->cs) & ~at93c->clk & ~(1 << at93c->rdata_shift));
+	lasat_ndelay(50);
+}
+
+static void at93c_end_op(void)
+{
+	at93c_reg_write(at93c_reg_read() & ~at93c->cs);
+	lasat_ndelay(250);
+}
+
+static void at93c_wait(void) 
+{ 
+	at93c_init_op();
+	while (!at93c_read_databit())
+		;
+	at93c_end_op();
+};
+
+static void at93c_disable_wp(void)
+{
+	at93c_init_op();
+	at93c_write_bits(AT93C_WENCMD, 10);
+	at93c_end_op();
+}
+
+static void at93c_enable_wp(void)
+{
+	at93c_init_op();
+	at93c_write_bits(AT93C_WDSCMD, 10);
+	at93c_end_op();
+}
+
+u8 at93c_read(u8 addr)
+{
+	u8 byte;
+	at93c_init_op();
+	at93c_write_bits((addr & AT93C_ADDR_MAX)|AT93C_RCMD, 10);
+	byte = at93c_read_byte();
+	at93c_end_op();
+	return byte;
+}
+
+void at93c_write(u8 addr, u8 data)
+{
+	at93c_disable_wp();
+	at93c_init_op();
+	at93c_write_bits((addr & AT93C_ADDR_MAX)|AT93C_WCMD, 10);
+	at93c_write_bits(data, 8);
+	at93c_end_op();
+	at93c_wait();
+	at93c_enable_wp();
+}
diff --git a/arch/mips/lasat/at93c.h b/arch/mips/lasat/at93c.h
new file mode 100644
index 00000000000..a912ac2171b
--- /dev/null
+++ b/arch/mips/lasat/at93c.h
@@ -0,0 +1,18 @@
+/* 
+ * Atmel AT93C46 serial eeprom driver
+ *
+ * Brian Murphy <brian.murphy@eicon.com> 
+ *
+ */
+
+extern struct at93c_defs {
+	volatile u32 *reg;
+	volatile u32 *rdata_reg;
+	int rdata_shift;
+	int wdata_shift;
+	u32 cs;
+	u32 clk;
+} *at93c;
+
+u8 at93c_read(u8 addr);
+void at93c_write(u8 addr, u8 data);
diff --git a/arch/mips/lasat/ds1603.c b/arch/mips/lasat/ds1603.c
new file mode 100644
index 00000000000..7bbf6cf923c
--- /dev/null
+++ b/arch/mips/lasat/ds1603.c
@@ -0,0 +1,174 @@
+/* 
+ * Dallas Semiconductors 1603 RTC driver 
+ *
+ * Brian Murphy <brian@murphy.dk> 
+ *
+ */
+#include <linux/kernel.h>
+#include <asm/lasat/lasat.h>
+#include <linux/delay.h>
+#include <asm/lasat/ds1603.h>
+
+#include "ds1603.h"
+
+#define READ_TIME_CMD 0x81
+#define SET_TIME_CMD 0x80
+#define TRIMMER_SET_CMD 0xC0
+#define TRIMMER_VALUE_MASK 0x38
+#define TRIMMER_SHIFT 3
+
+struct ds_defs *ds1603 = NULL;
+
+/* HW specific register functions */
+static void rtc_reg_write(unsigned long val) 
+{
+	*ds1603->reg = val;
+}
+
+static unsigned long rtc_reg_read(void) 
+{
+	unsigned long tmp = *ds1603->reg;
+	return tmp;
+}
+
+static unsigned long rtc_datareg_read(void)
+{
+	unsigned long tmp = *ds1603->data_reg;
+	return tmp;
+}
+
+static void rtc_nrst_high(void)
+{
+	rtc_reg_write(rtc_reg_read() | ds1603->rst);
+}
+
+static void rtc_nrst_low(void)
+{
+	rtc_reg_write(rtc_reg_read() & ~ds1603->rst);
+}
+
+static void rtc_cycle_clock(unsigned long data)
+{
+	data |= ds1603->clk;
+	rtc_reg_write(data);
+	lasat_ndelay(250);
+	if (ds1603->data_reversed)
+		data &= ~ds1603->data;
+	else
+		data |= ds1603->data;
+	data &= ~ds1603->clk;
+	rtc_reg_write(data);
+	lasat_ndelay(250 + ds1603->huge_delay);
+}
+
+static void rtc_write_databit(unsigned int bit)
+{
+	unsigned long data = rtc_reg_read();
+	if (ds1603->data_reversed)
+		bit = !bit;
+	if (bit)
+		data |= ds1603->data;
+	else
+		data &= ~ds1603->data;
+
+	rtc_reg_write(data);
+	lasat_ndelay(50 + ds1603->huge_delay);
+	rtc_cycle_clock(data);
+}
+
+static unsigned int rtc_read_databit(void)
+{
+	unsigned int data;
+
+	data = (rtc_datareg_read() & (1 << ds1603->data_read_shift)) 
+		>> ds1603->data_read_shift;
+	rtc_cycle_clock(rtc_reg_read());
+	return data;
+}
+
+static void rtc_write_byte(unsigned int byte)
+{
+	int i;
+
+	for (i = 0; i<=7; i++) {
+		rtc_write_databit(byte & 1L);
+		byte >>= 1;
+	}
+}
+
+static void rtc_write_word(unsigned long word)
+{
+	int i;
+
+	for (i = 0; i<=31; i++) {
+		rtc_write_databit(word & 1L);
+		word >>= 1;
+	}
+}
+
+static unsigned long rtc_read_word(void)
+{
+	int i;
+	unsigned long word = 0;
+	unsigned long shift = 0;
+
+	for (i = 0; i<=31; i++) {
+		word |= rtc_read_databit() << shift;
+		shift++;
+	}
+	return word;
+}
+
+static void rtc_init_op(void)
+{
+	rtc_nrst_high();
+
+	rtc_reg_write(rtc_reg_read() & ~ds1603->clk);
+
+	lasat_ndelay(50);
+}
+
+static void rtc_end_op(void)
+{
+	rtc_nrst_low();
+	lasat_ndelay(1000);
+}
+
+/* interface */
+unsigned long ds1603_read(void)
+{
+	unsigned long word;
+	rtc_init_op();
+	rtc_write_byte(READ_TIME_CMD);
+	word = rtc_read_word();
+	rtc_end_op();
+	return word;
+}
+
+int ds1603_set(unsigned long time)
+{
+	rtc_init_op();
+	rtc_write_byte(SET_TIME_CMD);
+	rtc_write_word(time);
+	rtc_end_op();
+
+	return 0;
+}
+
+void ds1603_set_trimmer(unsigned int trimval)
+{
+	rtc_init_op();
+	rtc_write_byte(((trimval << TRIMMER_SHIFT) & TRIMMER_VALUE_MASK)
+			| (TRIMMER_SET_CMD));
+	rtc_end_op();
+}
+
+void ds1603_disable(void)
+{
+	ds1603_set_trimmer(TRIMMER_DISABLE_RTC);
+}
+
+void ds1603_enable(void)
+{
+	ds1603_set_trimmer(TRIMMER_DEFAULT);
+}
diff --git a/arch/mips/lasat/ds1603.h b/arch/mips/lasat/ds1603.h
new file mode 100644
index 00000000000..55f3b0423c2
--- /dev/null
+++ b/arch/mips/lasat/ds1603.h
@@ -0,0 +1,33 @@
+/* 
+ * Dallas Semiconductors 1603 RTC driver 
+ *
+ * Brian Murphy <brian@murphy.dk> 
+ *
+ */
+#ifndef __DS1603_H
+#define __DS1603_H
+
+struct ds_defs {
+	volatile u32 *reg;
+	volatile u32 *data_reg;
+	u32 rst;
+	u32 clk;
+	u32 data;
+	u32 data_read_shift;
+	char data_reversed;
+	u32 huge_delay;
+};
+
+extern struct ds_defs *ds1603;
+
+unsigned long ds1603_read(void);
+int ds1603_set(unsigned long);
+void ds1603_set_trimmer(unsigned int);
+void ds1603_enable(void);
+void ds1603_disable(void);
+void ds1603_init(struct ds_defs *);
+
+#define TRIMMER_DEFAULT	3
+#define TRIMMER_DISABLE_RTC 0
+
+#endif
diff --git a/arch/mips/lasat/image/Makefile b/arch/mips/lasat/image/Makefile
new file mode 100644
index 00000000000..18b6430f11b
--- /dev/null
+++ b/arch/mips/lasat/image/Makefile
@@ -0,0 +1,53 @@
+#
+# MAKEFILE FOR THE MIPS LINUX BOOTLOADER AND ROM DEBUGGER
+#
+# i-data Networks
+#
+# Author: Thomas Horsten <thh@i-data.com>
+#
+
+ifndef Version
+ Version = "$(USER)-test"
+endif
+
+MKLASATIMG = mklasatimg
+MKLASATIMG_ARCH = mq2,mqpro,sp100,sp200
+KERNEL_IMAGE = $(TOPDIR)/vmlinux
+KERNEL_START = $(shell $(NM) $(KERNEL_IMAGE) | grep " _text" | cut -f1 -d\ )
+KERNEL_ENTRY = $(shell $(NM) $(KERNEL_IMAGE) | grep kernel_entry | cut -f1 -d\ )
+
+LDSCRIPT= -L$(obj) -Tromscript.normal
+
+HEAD_DEFINES := -D_kernel_start=0x$(KERNEL_START) \
+		-D_kernel_entry=0x$(KERNEL_ENTRY) \
+		-D VERSION="\"$(Version)\"" \
+		-D TIMESTAMP=$(shell date +%s) 
+
+$(obj)/head.o: $(obj)/head.S $(KERNEL_IMAGE)
+	$(CC) -fno-pic $(HEAD_DEFINES) -I$(TOPDIR)/include -c -o $@ $<
+
+OBJECTS = head.o kImage.o
+
+rom.sw:	$(obj)/rom.sw
+
+$(obj)/rom.sw:	$(obj)/rom.bin
+	$(MKLASATIMG) -o $@ -k $^ -m $(MKLASATIMG_ARCH)
+
+$(obj)/rom.bin: $(obj)/rom
+	$(OBJCOPY) -O binary -S $^ $@
+
+# Rule to make the bootloader
+$(obj)/rom: $(addprefix $(obj)/,$(OBJECTS))
+	$(LD) $(LDFLAGS) $(LDSCRIPT) -o $@ $^
+
+$(obj)/%.o: $(obj)/%.gz
+	$(LD) -r -o $@ -b binary $<
+
+$(obj)/%.gz: $(obj)/%.bin
+	gzip -cf -9 $< > $@
+
+$(obj)/kImage.bin: $(KERNEL_IMAGE)
+	$(OBJCOPY) -O binary -S $^ $@
+
+clean:
+	rm -f rom rom.bin rom.sw kImage.bin kImage.o
diff --git a/arch/mips/lasat/image/head.S b/arch/mips/lasat/image/head.S
new file mode 100644
index 00000000000..426bd7de17b
--- /dev/null
+++ b/arch/mips/lasat/image/head.S
@@ -0,0 +1,31 @@
+#include <asm/lasat/head.h>
+
+	.text
+	.section .text.start, "ax"
+	.set noreorder
+	.set mips3
+
+	/* Magic words identifying a software image */
+	.word	LASAT_K_MAGIC0_VAL
+	.word 	LASAT_K_MAGIC1_VAL
+
+	/* Image header version */
+	.word	0x00000002
+
+	/* image start and size */
+	.word	_image_start
+	.word	_image_size
+
+	/* start of kernel and entrypoint in uncompressed image */
+	.word	_kernel_start
+	.word	_kernel_entry
+
+	/* Here we have room for future flags */
+
+	.org	0x40
+reldate:
+	.word	TIMESTAMP
+
+	.org	0x50
+release:	
+	.string VERSION
diff --git a/arch/mips/lasat/image/romscript.normal b/arch/mips/lasat/image/romscript.normal
new file mode 100644
index 00000000000..ca22336f6c3
--- /dev/null
+++ b/arch/mips/lasat/image/romscript.normal
@@ -0,0 +1,22 @@
+OUTPUT_ARCH(mips)
+
+SECTIONS
+{
+  .text :
+  {
+    *(.text.start)
+  }
+
+  /* Data in ROM */
+
+  .data ALIGN(0x10) :
+  {
+    *(.data)
+  }
+  _image_start = ADDR(.data);
+  _image_size = SIZEOF(.data);
+
+  .other : {
+  	*(.*)
+  }
+}
diff --git a/arch/mips/lasat/interrupt.c b/arch/mips/lasat/interrupt.c
new file mode 100644
index 00000000000..1148a2d20aa
--- /dev/null
+++ b/arch/mips/lasat/interrupt.c
@@ -0,0 +1,160 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ * Routines for generic manipulation of the interrupts found on the 
+ * Lasat boards.
+ */
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+
+#include <asm/bootinfo.h>
+#include <asm/irq.h>
+#include <asm/lasat/lasatint.h>
+#include <asm/gdb-stub.h>
+
+static volatile int *lasat_int_status = NULL;
+static volatile int *lasat_int_mask = NULL;
+static volatile int lasat_int_mask_shift;
+
+extern asmlinkage void lasatIRQ(void);
+
+void disable_lasat_irq(unsigned int irq_nr)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	*lasat_int_mask &= ~(1 << irq_nr) << lasat_int_mask_shift;
+	local_irq_restore(flags);
+}
+
+void enable_lasat_irq(unsigned int irq_nr)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	*lasat_int_mask |= (1 << irq_nr) << lasat_int_mask_shift;
+	local_irq_restore(flags);
+}
+
+static unsigned int startup_lasat_irq(unsigned int irq)
+{
+	enable_lasat_irq(irq);
+
+	return 0; /* never anything pending */
+}
+
+#define shutdown_lasat_irq	disable_lasat_irq
+
+#define mask_and_ack_lasat_irq disable_lasat_irq
+
+static void end_lasat_irq(unsigned int irq)
+{
+	if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+		enable_lasat_irq(irq);
+}
+
+static struct hw_interrupt_type lasat_irq_type = {
+	"Lasat",
+	startup_lasat_irq,
+	shutdown_lasat_irq,
+	enable_lasat_irq,
+	disable_lasat_irq,
+	mask_and_ack_lasat_irq,
+	end_lasat_irq,
+	NULL
+};
+
+static inline int ls1bit32(unsigned int x)
+{
+	int b = 31, s;
+
+	s = 16; if (x << 16 == 0) s = 0; b -= s; x <<= s;
+	s =  8; if (x <<  8 == 0) s = 0; b -= s; x <<= s;
+	s =  4; if (x <<  4 == 0) s = 0; b -= s; x <<= s;
+	s =  2; if (x <<  2 == 0) s = 0; b -= s; x <<= s;
+	s =  1; if (x <<  1 == 0) s = 0; b -= s;
+
+	return b;
+}
+
+static unsigned long (* get_int_status)(void);
+
+static unsigned long get_int_status_100(void)
+{
+	return *lasat_int_status & *lasat_int_mask;
+}
+
+static unsigned long get_int_status_200(void) 
+{
+	unsigned long int_status;
+
+	int_status = *lasat_int_status;
+	int_status &= (int_status >> LASATINT_MASK_SHIFT_200) & 0xffff;
+	return int_status;
+}
+
+void lasat_hw0_irqdispatch(struct pt_regs *regs)
+{
+	unsigned long int_status;
+	int irq;
+
+	int_status = get_int_status();
+
+	/* if int_status == 0, then the interrupt has already been cleared */
+	if (int_status) {
+		irq = ls1bit32(int_status);
+
+		do_IRQ(irq, regs);
+	}
+}
+
+void __init arch_init_irq(void)
+{
+	int i;
+
+	switch (mips_machtype) {
+	case MACH_LASAT_100:
+		lasat_int_status = (void *)LASAT_INT_STATUS_REG_100;
+		lasat_int_mask = (void *)LASAT_INT_MASK_REG_100;
+		lasat_int_mask_shift = LASATINT_MASK_SHIFT_100;
+		get_int_status = get_int_status_100;
+		*lasat_int_mask = 0;
+		break;
+	case MACH_LASAT_200:
+		lasat_int_status = (void *)LASAT_INT_STATUS_REG_200;
+		lasat_int_mask = (void *)LASAT_INT_MASK_REG_200;
+		lasat_int_mask_shift = LASATINT_MASK_SHIFT_200;
+		get_int_status = get_int_status_200;
+		*lasat_int_mask &= 0xffff;
+		break;
+	default:
+		panic("arch_init_irq: mips_machtype incorrect");
+	}
+
+	/* Now safe to set the exception vector. */
+	set_except_vector(0, lasatIRQ);
+
+	for (i = 0; i <= LASATINT_END; i++) {
+		irq_desc[i].status	= IRQ_DISABLED;
+		irq_desc[i].action	= 0;
+		irq_desc[i].depth	= 1;
+		irq_desc[i].handler	= &lasat_irq_type;
+	}
+}
diff --git a/arch/mips/lasat/lasatIRQ.S b/arch/mips/lasat/lasatIRQ.S
new file mode 100644
index 00000000000..2a2b0d05656
--- /dev/null
+++ b/arch/mips/lasat/lasatIRQ.S
@@ -0,0 +1,69 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999, 2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ * Interrupt exception dispatch code.
+ */
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+	.text
+	.set	noreorder
+	.align	5
+	NESTED(lasatIRQ, PT_SIZE, sp)
+	.set	noat
+	SAVE_ALL
+	CLI
+	.set	at
+	.set	noreorder
+
+	mfc0	s0, CP0_CAUSE		# get irq mask
+
+	/* First we check for r4k counter/timer IRQ. */
+	andi	a0, s0, CAUSEF_IP7
+	beq	a0, zero, 1f
+	 andi	a0, s0, CAUSEF_IP2	# delay slot, check hw0 interrupt
+
+	/* Wheee, a timer interrupt. */
+	li	a0, 7
+	jal	ll_timer_interrupt
+	 move	a1, sp
+
+	j	ret_from_irq
+	 nop
+
+1:
+	/* Wheee, combined hardware level zero interrupt. */
+	jal	lasat_hw0_irqdispatch
+	 move	a0, sp			# delay slot
+
+	j	ret_from_irq
+	 nop				# delay slot
+
+1:
+	/*
+	 * Here by mistake?  This is possible, what can happen is that by the
+	 * time we take the exception the IRQ pin goes low, so just leave if
+	 * this is the case.
+	 */
+	move	a1,s0
+	mfc0	a1, CP0_EPC
+
+	j	ret_from_irq
+	 nop
+	END(lasatIRQ)
diff --git a/arch/mips/lasat/lasat_board.c b/arch/mips/lasat/lasat_board.c
new file mode 100644
index 00000000000..8c784bcf111
--- /dev/null
+++ b/arch/mips/lasat/lasat_board.c
@@ -0,0 +1,277 @@
+/*
+ * Thomas Horsten <thh@lasat.com>
+ * Copyright (C) 2000 LASAT Networks A/S.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ * Routines specific to the LASAT boards
+ */
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/crc32.h>
+#include <asm/lasat/lasat.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <asm/bootinfo.h>
+#include <asm/addrspace.h>
+#include "at93c.h"
+/* New model description table */
+#include "lasat_models.h"
+
+#define EEPROM_CRC(data, len) (~0 ^ crc32(~0, data, len))
+
+struct lasat_info lasat_board_info;
+
+void update_bcastaddr(void);
+
+int EEPROMRead(unsigned int pos, unsigned char *data, int len)
+{
+	int i;
+
+	for (i=0; i<len; i++)
+		*data++ = at93c_read(pos++);
+
+	return 0;
+}
+int EEPROMWrite(unsigned int pos, unsigned char *data, int len)
+{
+	int i;
+
+	for (i=0; i<len; i++)
+		at93c_write(pos++, *data++);
+
+	return 0;
+}
+
+static void init_flash_sizes(void)
+{
+	int i;
+	unsigned long *lb = lasat_board_info.li_flashpart_base;
+	unsigned long *ls = lasat_board_info.li_flashpart_size;
+
+	ls[LASAT_MTD_BOOTLOADER] = 0x40000;
+	ls[LASAT_MTD_SERVICE] = 0xC0000;
+	ls[LASAT_MTD_NORMAL] = 0x100000;
+
+	if (mips_machtype == MACH_LASAT_100) {
+		lasat_board_info.li_flash_base = 0x1e000000;
+		
+		lb[LASAT_MTD_BOOTLOADER] = 0x1e400000;
+
+		if (lasat_board_info.li_flash_size > 0x200000) {
+			ls[LASAT_MTD_CONFIG] = 0x100000;
+			ls[LASAT_MTD_FS] = 0x500000;
+		}
+	} else {
+		lasat_board_info.li_flash_base = 0x10000000;
+
+		if (lasat_board_info.li_flash_size < 0x1000000) {
+			lb[LASAT_MTD_BOOTLOADER] = 0x10000000;
+			ls[LASAT_MTD_CONFIG] = 0x100000;
+			if (lasat_board_info.li_flash_size >= 0x400000) {
+				ls[LASAT_MTD_FS] = lasat_board_info.li_flash_size - 0x300000;
+			}
+		}
+	}
+
+	for (i = 1; i < LASAT_MTD_LAST; i++)
+		lb[i] = lb[i-1] + ls[i-1];
+}
+
+int lasat_init_board_info(void)
+{
+	int c;
+	unsigned long crc;
+	unsigned long cfg0, cfg1;
+	const product_info_t   *ppi;
+	int i_n_base_models = N_BASE_MODELS;
+	const char * const * i_txt_base_models = txt_base_models;
+	int i_n_prids = N_PRIDS;
+
+	memset(&lasat_board_info, 0, sizeof(lasat_board_info));
+
+	/* First read the EEPROM info */
+	EEPROMRead(0, (unsigned char *)&lasat_board_info.li_eeprom_info, 
+		   sizeof(struct lasat_eeprom_struct));
+
+	/* Check the CRC */
+	crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info),
+		    sizeof(struct lasat_eeprom_struct) - 4);
+
+	if (crc != lasat_board_info.li_eeprom_info.crc32) {
+		prom_printf("WARNING...\nWARNING...\nEEPROM CRC does not match calculated, attempting to soldier on...\n");
+	}
+
+	if (lasat_board_info.li_eeprom_info.version != LASAT_EEPROM_VERSION)
+	{
+		prom_printf("WARNING...\nWARNING...\nEEPROM version %d, wanted version %d, attempting to soldier on...\n",
+		       (unsigned int)lasat_board_info.li_eeprom_info.version,
+		       LASAT_EEPROM_VERSION);
+	}
+
+	cfg0 = lasat_board_info.li_eeprom_info.cfg[0];
+	cfg1 = lasat_board_info.li_eeprom_info.cfg[1];
+
+	if ( LASAT_W0_DSCTYPE(cfg0) != 1) {
+		prom_printf("WARNING...\nWARNING...\nInvalid configuration read from EEPROM, attempting to soldier on...");
+	}
+	/* We have a valid configuration */
+
+	switch (LASAT_W0_SDRAMBANKSZ(cfg0)) {
+	case 0:
+		lasat_board_info.li_memsize = 0x0800000;
+		break;
+	case 1:
+		lasat_board_info.li_memsize = 0x1000000;
+		break;
+	case 2:
+		lasat_board_info.li_memsize = 0x2000000;
+		break;
+	case 3:
+		lasat_board_info.li_memsize = 0x4000000;
+		break;
+	case 4:
+		lasat_board_info.li_memsize = 0x8000000;
+		break;
+	default:
+		lasat_board_info.li_memsize = 0;
+	}
+
+	switch (LASAT_W0_SDRAMBANKS(cfg0)) {
+	case 0:
+		break;
+	case 1:
+		lasat_board_info.li_memsize *= 2;
+		break;
+	default:
+		break;
+	}
+
+	switch (LASAT_W0_BUSSPEED(cfg0)) {
+	case 0x0:
+		lasat_board_info.li_bus_hz = 60000000;
+		break;
+	case 0x1:
+		lasat_board_info.li_bus_hz = 66000000;
+		break;
+	case 0x2:
+		lasat_board_info.li_bus_hz = 66666667;
+		break;
+	case 0x3:
+		lasat_board_info.li_bus_hz = 80000000;
+		break;
+	case 0x4:
+		lasat_board_info.li_bus_hz = 83333333;
+		break;
+	case 0x5:
+		lasat_board_info.li_bus_hz = 100000000;
+		break;
+	}
+
+	switch (LASAT_W0_CPUCLK(cfg0)) {
+	case 0x0:
+		lasat_board_info.li_cpu_hz =
+			lasat_board_info.li_bus_hz;
+		break;
+	case 0x1:
+		lasat_board_info.li_cpu_hz =
+			lasat_board_info.li_bus_hz +
+			(lasat_board_info.li_bus_hz >> 1);	
+		break;
+	case 0x2:
+		lasat_board_info.li_cpu_hz =
+			lasat_board_info.li_bus_hz +
+			lasat_board_info.li_bus_hz;
+		break;
+	case 0x3:
+		lasat_board_info.li_cpu_hz =
+			lasat_board_info.li_bus_hz +
+			lasat_board_info.li_bus_hz +
+			(lasat_board_info.li_bus_hz >> 1);
+		break;
+	case 0x4:
+		lasat_board_info.li_cpu_hz =
+			lasat_board_info.li_bus_hz +
+			lasat_board_info.li_bus_hz +
+			lasat_board_info.li_bus_hz;
+		break;
+	}
+
+	/* Flash size */
+	switch (LASAT_W1_FLASHSIZE(cfg1)) {
+	case 0:
+		lasat_board_info.li_flash_size = 0x200000;
+		break;
+	case 1:
+		lasat_board_info.li_flash_size = 0x400000;
+		break;
+	case 2:
+		lasat_board_info.li_flash_size = 0x800000;
+		break;
+	case 3:
+		lasat_board_info.li_flash_size = 0x1000000;
+		break;
+	case 4:
+		lasat_board_info.li_flash_size = 0x2000000;
+		break;
+	}
+
+	init_flash_sizes();
+
+	lasat_board_info.li_bmid = LASAT_W0_BMID(cfg0);
+	lasat_board_info.li_prid = lasat_board_info.li_eeprom_info.prid;
+	if (lasat_board_info.li_prid == 0xffff || lasat_board_info.li_prid == 0)
+		lasat_board_info.li_prid = lasat_board_info.li_bmid;
+
+	/* Base model stuff */
+	if (lasat_board_info.li_bmid > i_n_base_models)
+		lasat_board_info.li_bmid = i_n_base_models;
+	strcpy(lasat_board_info.li_bmstr, i_txt_base_models[lasat_board_info.li_bmid]);
+
+	/* Product ID dependent values */
+	c = lasat_board_info.li_prid;
+	if (c >= i_n_prids) {
+		strcpy(lasat_board_info.li_namestr, "Unknown Model");
+		strcpy(lasat_board_info.li_typestr, "Unknown Type");
+	} else {
+		ppi = &vendor_info_table[0].vi_product_info[c];
+		strcpy(lasat_board_info.li_namestr, ppi->pi_name);
+		if (ppi->pi_type)
+			strcpy(lasat_board_info.li_typestr, ppi->pi_type);
+		else
+			sprintf(lasat_board_info.li_typestr, "%d",10*c);
+	}
+
+#if defined(CONFIG_INET) && defined(CONFIG_SYSCTL)
+	update_bcastaddr();
+#endif
+
+	return 0;
+}
+
+void lasat_write_eeprom_info(void)
+{
+	unsigned long crc;
+
+	/* Generate the CRC */
+	crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info),
+		    sizeof(struct lasat_eeprom_struct) - 4);
+	lasat_board_info.li_eeprom_info.crc32 = crc;
+
+	/* Write the EEPROM info */
+	EEPROMWrite(0, (unsigned char *)&lasat_board_info.li_eeprom_info, 
+		    sizeof(struct lasat_eeprom_struct));
+}
+
diff --git a/arch/mips/lasat/lasat_models.h b/arch/mips/lasat/lasat_models.h
new file mode 100644
index 00000000000..ae0c5d0bd40
--- /dev/null
+++ b/arch/mips/lasat/lasat_models.h
@@ -0,0 +1,63 @@
+/*
+ * Model description tables
+ */
+
+typedef struct product_info_t {
+	const char     *pi_name;
+	const char     *pi_type;
+} product_info_t;
+
+typedef struct vendor_info_t {
+	const char     *vi_name;
+	const product_info_t *vi_product_info;
+} vendor_info_t;
+
+/*
+ * Base m