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!

9 files changed, 1260 insertions, 0 deletions

diff --git a/arch/mips/ddb5xxx/ddb5477/Makefile b/arch/mips/ddb5xxx/ddb5477/Makefile
new file mode 100644
index 00000000000..b79b43c9f93
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for NEC DDB-Vrc5477 board
+#
+
+obj-y	 		+= int-handler.o irq.o irq_5477.o setup.o lcd44780.o
+
+obj-$(CONFIG_RUNTIME_DEBUG) 	+= debug.o
+obj-$(CONFIG_KGDB)		+= kgdb_io.o
+
+EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/ddb5xxx/ddb5477/debug.c b/arch/mips/ddb5xxx/ddb5477/debug.c
new file mode 100644
index 00000000000..68919d5f8ff
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/debug.c
@@ -0,0 +1,160 @@
+/***********************************************************************
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * arch/mips/ddb5xxx/ddb5477/debug.c
+ *     vrc5477 specific debug routines.
+ *
+ * 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.
+ *
+ ***********************************************************************
+ */
+
+#include <linux/kernel.h>
+
+#include <asm/mipsregs.h>
+#include <asm/ddb5xxx/ddb5xxx.h>
+
+typedef struct {
+       const char *regname;
+       unsigned regaddr;
+} Register;
+
+void jsun_show_regs(char *name, Register *regs)
+{
+	int i;
+
+	printk("\nshow regs: %s\n", name);
+	for(i=0;regs[i].regname!= NULL; i++) {
+		printk("%-16s= %08x\t\t(@%08x)\n",
+		       regs[i].regname,
+		       *(unsigned *)(regs[i].regaddr),
+		       regs[i].regaddr);
+	}
+}
+
+static Register int_regs[] = {
+	{"DDB_INTCTRL0", DDB_BASE + DDB_INTCTRL0},
+	{"DDB_INTCTRL1", DDB_BASE + DDB_INTCTRL1},
+	{"DDB_INTCTRL2", DDB_BASE + DDB_INTCTRL2},
+	{"DDB_INTCTRL3", DDB_BASE + DDB_INTCTRL3},
+	{"DDB_INT0STAT", DDB_BASE + DDB_INT0STAT},
+	{"DDB_INT1STAT", DDB_BASE + DDB_INT1STAT},
+	{"DDB_INT2STAT", DDB_BASE + DDB_INT2STAT},
+	{"DDB_INT3STAT", DDB_BASE + DDB_INT3STAT},
+	{"DDB_INT4STAT", DDB_BASE + DDB_INT4STAT},
+	{"DDB_NMISTAT", DDB_BASE + DDB_NMISTAT},
+	{"DDB_INTPPES0", DDB_BASE + DDB_INTPPES0},
+	{"DDB_INTPPES1", DDB_BASE + DDB_INTPPES1},
+	{NULL, 0x0}
+};
+
+void vrc5477_show_int_regs()
+{
+	jsun_show_regs("interrupt registers", int_regs);
+	printk("CPU CAUSE = %08x\n", read_c0_cause());
+	printk("CPU STATUS = %08x\n", read_c0_status());
+}
+static Register pdar_regs[] = {
+        {"DDB_SDRAM0", DDB_BASE + DDB_SDRAM0},
+        {"DDB_SDRAM1", DDB_BASE + DDB_SDRAM1},
+        {"DDB_LCS0", DDB_BASE + DDB_LCS0},
+        {"DDB_LCS1", DDB_BASE + DDB_LCS1},
+        {"DDB_LCS2", DDB_BASE + DDB_LCS2},
+        {"DDB_INTCS", DDB_BASE + DDB_INTCS},
+        {"DDB_BOOTCS", DDB_BASE + DDB_BOOTCS},
+        {"DDB_PCIW0", DDB_BASE + DDB_PCIW0},
+        {"DDB_PCIW1", DDB_BASE + DDB_PCIW1},
+        {"DDB_IOPCIW0", DDB_BASE + DDB_IOPCIW0},
+        {"DDB_IOPCIW1", DDB_BASE + DDB_IOPCIW1},
+        {NULL, 0x0}
+};
+void vrc5477_show_pdar_regs(void)
+{
+        jsun_show_regs("PDAR regs", pdar_regs);
+}
+
+static Register bar_regs[] = {
+        {"DDB_BARC0", DDB_BASE + DDB_BARC0},
+        {"DDB_BARM010", DDB_BASE + DDB_BARM010},
+        {"DDB_BARM230", DDB_BASE + DDB_BARM230},
+        {"DDB_BAR00", DDB_BASE + DDB_BAR00},
+        {"DDB_BAR10", DDB_BASE + DDB_BAR10},
+        {"DDB_BAR20", DDB_BASE + DDB_BAR20},
+        {"DDB_BAR30", DDB_BASE + DDB_BAR30},
+        {"DDB_BAR40", DDB_BASE + DDB_BAR40},
+        {"DDB_BAR50", DDB_BASE + DDB_BAR50},
+        {"DDB_BARB0", DDB_BASE + DDB_BARB0},
+        {"DDB_BARC1", DDB_BASE + DDB_BARC1},
+        {"DDB_BARM011", DDB_BASE + DDB_BARM011},
+        {"DDB_BARM231", DDB_BASE + DDB_BARM231},
+        {"DDB_BAR01", DDB_BASE + DDB_BAR01},
+        {"DDB_BAR11", DDB_BASE + DDB_BAR11},
+        {"DDB_BAR21", DDB_BASE + DDB_BAR21},
+        {"DDB_BAR31", DDB_BASE + DDB_BAR31},
+        {"DDB_BAR41", DDB_BASE + DDB_BAR41},
+        {"DDB_BAR51", DDB_BASE + DDB_BAR51},
+        {"DDB_BARB1", DDB_BASE + DDB_BARB1},
+        {NULL, 0x0}
+};
+void vrc5477_show_bar_regs(void)
+{
+        jsun_show_regs("BAR regs", bar_regs);
+}
+
+static Register pci_regs[] = {
+        {"DDB_PCIW0", DDB_BASE + DDB_PCIW0},
+        {"DDB_PCIW1", DDB_BASE + DDB_PCIW1},
+        {"DDB_PCIINIT00", DDB_BASE + DDB_PCIINIT00},
+        {"DDB_PCIINIT10", DDB_BASE + DDB_PCIINIT10},
+        {"DDB_PCICTL0_L", DDB_BASE + DDB_PCICTL0_L},
+        {"DDB_PCICTL0_H", DDB_BASE + DDB_PCICTL0_H},
+        {"DDB_PCIARB0_L", DDB_BASE + DDB_PCIARB0_L},
+        {"DDB_PCIARB0_H", DDB_BASE + DDB_PCIARB0_H},
+        {"DDB_PCISWP0", DDB_BASE + DDB_PCISWP0},
+        {"DDB_PCIERR0", DDB_BASE + DDB_PCIERR0},
+        {"DDB_IOPCIW0", DDB_BASE + DDB_IOPCIW0},
+        {"DDB_IOPCIW1", DDB_BASE + DDB_IOPCIW1},
+        {"DDB_PCIINIT01", DDB_BASE + DDB_PCIINIT01},
+        {"DDB_PCIINIT11", DDB_BASE + DDB_PCIINIT11},
+        {"DDB_PCICTL1_L", DDB_BASE + DDB_PCICTL1_L},
+        {"DDB_PCICTL1_H", DDB_BASE + DDB_PCICTL1_H},
+        {"DDB_PCIARB1_L", DDB_BASE + DDB_PCIARB1_L},
+        {"DDB_PCIARB1_H", DDB_BASE + DDB_PCIARB1_H},
+        {"DDB_PCISWP1", DDB_BASE + DDB_PCISWP1},
+        {"DDB_PCIERR1", DDB_BASE + DDB_PCIERR1},
+        {NULL, 0x0}
+};
+void vrc5477_show_pci_regs(void)
+{
+        jsun_show_regs("PCI regs", pci_regs);
+}
+
+static Register lb_regs[] = {
+        {"DDB_LCNFG", DDB_BASE + DDB_LCNFG},
+        {"DDB_LCST0", DDB_BASE + DDB_LCST0},
+        {"DDB_LCST1", DDB_BASE + DDB_LCST1},
+        {"DDB_LCST2", DDB_BASE + DDB_LCST2},
+        {"DDB_ERRADR", DDB_BASE + DDB_ERRADR},
+        {"DDB_ERRCS", DDB_BASE + DDB_ERRCS},
+        {"DDB_BTM", DDB_BASE + DDB_BTM},
+        {"DDB_BCST", DDB_BASE + DDB_BCST},
+        {NULL, 0x0}
+};
+void vrc5477_show_lb_regs(void)
+{
+        jsun_show_regs("Local Bus regs", lb_regs);
+}
+
+void vrc5477_show_all_regs(void)
+{
+	vrc5477_show_pdar_regs();
+	vrc5477_show_pci_regs();
+	vrc5477_show_bar_regs();
+	vrc5477_show_int_regs();
+	vrc5477_show_lb_regs();
+}
diff --git a/arch/mips/ddb5xxx/ddb5477/int-handler.S b/arch/mips/ddb5xxx/ddb5477/int-handler.S
new file mode 100644
index 00000000000..a2502a14400
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/int-handler.S
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * First-level interrupt dispatcher for ddb5477
+ *
+ * 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.
+ */
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+#include <asm/ddb5xxx/ddb5477.h>
+
+/*
+ * first level interrupt dispatcher for ocelot board -
+ * We check for the timer first, then check PCI ints A and D.
+ * Then check for serial IRQ and fall through.
+ */
+	.align	5
+	NESTED(ddb5477_handle_int, PT_SIZE, sp)
+	SAVE_ALL
+	CLI
+	.set	at
+	.set	noreorder
+	mfc0	t0, CP0_CAUSE
+	mfc0	t2, CP0_STATUS
+
+	and	t0, t2
+
+	andi	t1, t0, STATUSF_IP7	/* cpu timer */
+	bnez	t1, ll_cputimer_irq
+	andi	t1, t0, (STATUSF_IP2 | STATUSF_IP3 | STATUSF_IP4 | STATUSF_IP5 | STATUSF_IP6 )
+	bnez	t1, ll_vrc5477_irq
+	andi	t1, t0, STATUSF_IP0	/* software int 0 */
+	bnez	t1, ll_cpu_ip0
+	andi	t1, t0, STATUSF_IP1	/* software int 1 */
+	bnez	t1, ll_cpu_ip1
+	nop
+	.set	reorder
+
+	/* wrong alarm or masked ... */
+	j	spurious_interrupt
+	nop
+	END(ddb5477_handle_int)
+
+	.align	5
+
+ll_vrc5477_irq:
+	move	a0, sp
+	jal	vrc5477_irq_dispatch
+	j	ret_from_irq
+
+ll_cputimer_irq:
+	li	a0, CPU_IRQ_BASE + 7
+	move	a1, sp
+	jal	do_IRQ
+	j	ret_from_irq
+
+
+ll_cpu_ip0:
+	li	a0, CPU_IRQ_BASE + 0
+	move	a1, sp
+	jal	do_IRQ
+	j	ret_from_irq
+
+ll_cpu_ip1:
+	li	a0, CPU_IRQ_BASE + 1
+	move	a1, sp
+	jal	do_IRQ
+	j	ret_from_irq
diff --git a/arch/mips/ddb5xxx/ddb5477/irq.c b/arch/mips/ddb5xxx/ddb5477/irq.c
new file mode 100644
index 00000000000..5f027bfa4af
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/irq.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ *
+ *  arch/mips/ddb5xxx/ddb5477/irq.c
+ *     The irq setup and misc routines for DDB5476.
+ *
+ * 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.
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/types.h>
+#include <linux/ptrace.h>
+
+#include <asm/i8259.h>
+#include <asm/system.h>
+#include <asm/mipsregs.h>
+#include <asm/debug.h>
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+
+#include <asm/ddb5xxx/ddb5xxx.h>
+
+
+/*
+ * IRQ mapping
+ *
+ *  0-7: 8 CPU interrupts
+ *	0 -	software interrupt 0
+ *	1 - 	software interrupt 1
+ *	2 - 	most Vrc5477 interrupts are routed to this pin
+ *	3 - 	(optional) some other interrupts routed to this pin for debugg
+ *	4 - 	not used
+ *	5 - 	not used
+ *	6 - 	not used
+ *	7 - 	cpu timer (used by default)
+ *
+ *  8-39: 32 Vrc5477 interrupt sources
+ *	(refer to the Vrc5477 manual)
+ */
+
+#define	PCI0			DDB_INTPPES0
+#define	PCI1			DDB_INTPPES1
+
+#define	ACTIVE_LOW		1
+#define	ACTIVE_HIGH		0
+
+#define	LEVEL_SENSE		2
+#define	EDGE_TRIGGER		0
+
+#define	INTA			0
+#define	INTB			1
+#define	INTC			2
+#define	INTD			3
+#define	INTE			4
+
+static inline void
+set_pci_int_attr(u32 pci, u32 intn, u32 active, u32 trigger)
+{
+	u32 reg_value;
+	u32 reg_bitmask;
+
+	reg_value = ddb_in32(pci);
+	reg_bitmask = 0x3 << (intn * 2);
+
+	reg_value &= ~reg_bitmask;
+	reg_value |= (active | trigger) << (intn * 2);
+	ddb_out32(pci, reg_value);
+}
+
+extern void vrc5477_irq_init(u32 base);
+extern void mips_cpu_irq_init(u32 base);
+extern asmlinkage void ddb5477_handle_int(void);
+extern int setup_irq(unsigned int irq, struct irqaction *irqaction);  
+static struct irqaction irq_cascade = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL };
+
+void __init arch_init_irq(void)
+{
+	/* by default, we disable all interrupts and route all vrc5477
+	 * interrupts to pin 0 (irq 2) */
+	ddb_out32(DDB_INTCTRL0, 0);
+	ddb_out32(DDB_INTCTRL1, 0);
+	ddb_out32(DDB_INTCTRL2, 0);
+	ddb_out32(DDB_INTCTRL3, 0);
+
+	clear_c0_status(0xff00);
+	set_c0_status(0x0400);
+
+	/* setup PCI interrupt attributes */
+	set_pci_int_attr(PCI0, INTA, ACTIVE_LOW, LEVEL_SENSE);
+	set_pci_int_attr(PCI0, INTB, ACTIVE_LOW, LEVEL_SENSE);
+	if (mips_machtype == MACH_NEC_ROCKHOPPERII) 
+		set_pci_int_attr(PCI0, INTC, ACTIVE_HIGH, LEVEL_SENSE);
+	else
+		set_pci_int_attr(PCI0, INTC, ACTIVE_LOW, LEVEL_SENSE);
+	set_pci_int_attr(PCI0, INTD, ACTIVE_LOW, LEVEL_SENSE);
+	set_pci_int_attr(PCI0, INTE, ACTIVE_LOW, LEVEL_SENSE);
+
+	set_pci_int_attr(PCI1, INTA, ACTIVE_LOW, LEVEL_SENSE);
+	set_pci_int_attr(PCI1, INTB, ACTIVE_LOW, LEVEL_SENSE);
+	set_pci_int_attr(PCI1, INTC, ACTIVE_LOW, LEVEL_SENSE);
+	set_pci_int_attr(PCI1, INTD, ACTIVE_LOW, LEVEL_SENSE);
+	set_pci_int_attr(PCI1, INTE, ACTIVE_LOW, LEVEL_SENSE);
+
+	/*
+	 * for debugging purpose, we enable several error interrupts
+	 * and route them to pin 1. (IP3)
+	 */
+	/* cpu parity check - 0 */
+	ll_vrc5477_irq_route(0, 1); ll_vrc5477_irq_enable(0);
+	/* cpu no-target decode - 1 */
+	ll_vrc5477_irq_route(1, 1); ll_vrc5477_irq_enable(1);
+	/* local bus read time-out - 7 */
+	ll_vrc5477_irq_route(7, 1); ll_vrc5477_irq_enable(7);
+	/* PCI SERR# - 14 */
+	ll_vrc5477_irq_route(14, 1); ll_vrc5477_irq_enable(14);
+	/* PCI internal error - 15 */
+	ll_vrc5477_irq_route(15, 1); ll_vrc5477_irq_enable(15);
+	/* IOPCI SERR# - 30 */
+	ll_vrc5477_irq_route(30, 1); ll_vrc5477_irq_enable(30);
+	/* IOPCI internal error - 31 */
+	ll_vrc5477_irq_route(31, 1); ll_vrc5477_irq_enable(31);
+
+	/* init all controllers */
+	init_i8259_irqs();
+	mips_cpu_irq_init(CPU_IRQ_BASE);
+	vrc5477_irq_init(VRC5477_IRQ_BASE);
+
+
+	/* setup cascade interrupts */
+	setup_irq(VRC5477_IRQ_BASE + VRC5477_I8259_CASCADE, &irq_cascade);
+	setup_irq(CPU_IRQ_BASE + CPU_VRC5477_CASCADE, &irq_cascade);      
+
+	/* hook up the first-level interrupt handler */
+	set_except_vector(0, ddb5477_handle_int);
+}
+
+u8 i8259_interrupt_ack(void)
+{
+	u8 irq;
+	u32 reg;
+
+	/* Set window 0 for interrupt acknowledge */
+	reg = ddb_in32(DDB_PCIINIT10);
+
+	ddb_set_pmr(DDB_PCIINIT10, DDB_PCICMD_IACK, 0, DDB_PCI_ACCESS_32);
+	irq = *(volatile u8 *) KSEG1ADDR(DDB_PCI_IACK_BASE);
+	ddb_out32(DDB_PCIINIT10, reg);
+
+	/* i8259.c set the base vector to be 0x0 */
+	return irq + I8259_IRQ_BASE;
+}
+/*
+ * the first level int-handler will jump here if it is a vrc5477 irq
+ */
+#define	NUM_5477_IRQS	32
+asmlinkage void
+vrc5477_irq_dispatch(struct pt_regs *regs)
+{
+	u32 intStatus;
+	u32 bitmask;
+	u32 i;
+
+	db_assert(ddb_in32(DDB_INT2STAT) == 0);
+	db_assert(ddb_in32(DDB_INT3STAT) == 0);
+	db_assert(ddb_in32(DDB_INT4STAT) == 0);
+	db_assert(ddb_in32(DDB_NMISTAT) == 0);
+
+	if (ddb_in32(DDB_INT1STAT) != 0) {
+#if defined(CONFIG_RUNTIME_DEBUG)
+		vrc5477_show_int_regs();
+#endif
+		panic("error interrupt has happened.");
+	}
+
+	intStatus = ddb_in32(DDB_INT0STAT);
+
+	if (mips_machtype == MACH_NEC_ROCKHOPPERII) {
+		/* check for i8259 interrupts */
+		if (intStatus & (1 << VRC5477_I8259_CASCADE)) {
+			int i8259_irq = i8259_interrupt_ack();
+			do_IRQ(I8259_IRQ_BASE + i8259_irq, regs);
+			return;
+		}
+	}
+
+	for (i=0, bitmask=1; i<= NUM_5477_IRQS; bitmask <<=1, i++) {
+		/* do we need to "and" with the int mask? */
+		if (intStatus & bitmask) {
+			do_IRQ(VRC5477_IRQ_BASE + i, regs);
+			return;
+		}
+	}
+}
diff --git a/arch/mips/ddb5xxx/ddb5477/irq_5477.c b/arch/mips/ddb5xxx/ddb5477/irq_5477.c
new file mode 100644
index 00000000000..0d5e706207e
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/irq_5477.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ *
+ *  arch/mips/ddb5xxx/ddb5477/irq_5477.c
+ *     This file defines the irq handler for Vrc5477.
+ *
+ * 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.
+ *
+ */
+
+/*
+ * Vrc5477 defines 32 IRQs.
+ *
+ * This file exports one function:
+ *	vrc5477_irq_init(u32 irq_base);
+ */
+
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <linux/ptrace.h>
+
+#include <asm/debug.h>
+
+#include <asm/ddb5xxx/ddb5xxx.h>
+
+/* number of total irqs supported by Vrc5477 */
+#define	NUM_5477_IRQ		32
+
+static int vrc5477_irq_base = -1;
+
+
+static void
+vrc5477_irq_enable(unsigned int irq)
+{
+	db_assert(vrc5477_irq_base != -1);
+	db_assert(irq >= vrc5477_irq_base);
+	db_assert(irq < vrc5477_irq_base+ NUM_5477_IRQ);
+
+	ll_vrc5477_irq_enable(irq - vrc5477_irq_base);
+}
+
+static void
+vrc5477_irq_disable(unsigned int irq)
+{
+	db_assert(vrc5477_irq_base != -1);
+	db_assert(irq >= vrc5477_irq_base);
+	db_assert(irq < vrc5477_irq_base + NUM_5477_IRQ);
+
+	ll_vrc5477_irq_disable(irq - vrc5477_irq_base);
+}
+
+static unsigned int vrc5477_irq_startup(unsigned int irq)
+{
+	vrc5477_irq_enable(irq);
+	return 0;
+}
+
+#define	vrc5477_irq_shutdown	vrc5477_irq_disable
+
+static void
+vrc5477_irq_ack(unsigned int irq)
+{
+	db_assert(vrc5477_irq_base != -1);
+	db_assert(irq >= vrc5477_irq_base);
+	db_assert(irq < vrc5477_irq_base+ NUM_5477_IRQ);
+
+	/* clear the interrupt bit */
+	/* some irqs require the driver to clear the sources */
+	ddb_out32(DDB_INTCLR32, 1 << (irq - vrc5477_irq_base));
+
+	/* disable interrupt - some handler will re-enable the irq
+	 * and if the interrupt is leveled, we will have infinite loop
+	 */
+	ll_vrc5477_irq_disable(irq - vrc5477_irq_base);
+}
+
+static void
+vrc5477_irq_end(unsigned int irq)
+{
+	db_assert(vrc5477_irq_base != -1);
+	db_assert(irq >= vrc5477_irq_base);
+	db_assert(irq < vrc5477_irq_base + NUM_5477_IRQ);
+
+	if(!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
+		ll_vrc5477_irq_enable( irq - vrc5477_irq_base);
+}
+
+hw_irq_controller vrc5477_irq_controller = {
+	"vrc5477_irq",
+	vrc5477_irq_startup,
+	vrc5477_irq_shutdown,
+	vrc5477_irq_enable,
+	vrc5477_irq_disable,
+	vrc5477_irq_ack,
+	vrc5477_irq_end,
+	NULL			/* no affinity stuff for UP */
+};
+
+void __init vrc5477_irq_init(u32 irq_base)
+{
+	u32 i;
+
+	for (i= irq_base; i< irq_base+ NUM_5477_IRQ; i++) {
+		irq_desc[i].status = IRQ_DISABLED;
+		irq_desc[i].action = NULL;
+		irq_desc[i].depth = 1;
+		irq_desc[i].handler = &vrc5477_irq_controller;
+	}
+
+	vrc5477_irq_base = irq_base;
+}
+
+void ll_vrc5477_irq_route(int vrc5477_irq, int ip)
+{
+	u32 reg_value;
+	u32 reg_bitmask;
+	u32 reg_index;
+
+	db_assert(vrc5477_irq >= 0);
+	db_assert(vrc5477_irq < NUM_5477_IRQ);
+	db_assert(ip >= 0);
+	db_assert((ip < 5) || (ip == 6));
+
+	reg_index = DDB_INTCTRL0 + vrc5477_irq/8*4;
+	reg_value = ddb_in32(reg_index);
+	reg_bitmask = 7 << (vrc5477_irq % 8 * 4);
+	reg_value &= ~reg_bitmask;
+	reg_value |= ip << (vrc5477_irq % 8 * 4);
+	ddb_out32(reg_index, reg_value);
+}
+
+void ll_vrc5477_irq_enable(int vrc5477_irq)
+{
+	u32 reg_value;
+	u32 reg_bitmask;
+	u32 reg_index;
+
+	db_assert(vrc5477_irq >= 0);
+	db_assert(vrc5477_irq < NUM_5477_IRQ);
+
+	reg_index = DDB_INTCTRL0 + vrc5477_irq/8*4;
+	reg_value = ddb_in32(reg_index);
+	reg_bitmask = 8 << (vrc5477_irq % 8 * 4);
+	db_assert((reg_value & reg_bitmask) == 0);
+	ddb_out32(reg_index, reg_value | reg_bitmask);
+}
+
+void ll_vrc5477_irq_disable(int vrc5477_irq)
+{
+	u32 reg_value;
+	u32 reg_bitmask;
+	u32 reg_index;
+
+	db_assert(vrc5477_irq >= 0);
+	db_assert(vrc5477_irq < NUM_5477_IRQ);
+
+	reg_index = DDB_INTCTRL0 + vrc5477_irq/8*4;
+	reg_value = ddb_in32(reg_index);
+	reg_bitmask = 8 << (vrc5477_irq % 8 * 4);
+
+	/* we assert that the interrupt is enabled (perhaps over-zealous) */
+	db_assert( (reg_value & reg_bitmask) != 0);
+	ddb_out32(reg_index, reg_value & ~reg_bitmask);
+}
diff --git a/arch/mips/ddb5xxx/ddb5477/kgdb_io.c b/arch/mips/ddb5xxx/ddb5477/kgdb_io.c
new file mode 100644
index 00000000000..1d18d590495
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/kgdb_io.c
@@ -0,0 +1,136 @@
+/*
+ * kgdb io functions for DDB5477.  We use the second serial port (upper one).
+ *
+ * Copyright (C) 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * 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.
+ *
+ */
+
+/* ======================= CONFIG ======================== */
+
+/* [jsun] we use the second serial port for kdb */
+#define         BASE                    0xbfa04240
+#define         MAX_BAUD                115200
+
+/* distance in bytes between two serial registers */
+#define         REG_OFFSET              8
+
+/*
+ * 0 - kgdb does serial init
+ * 1 - kgdb skip serial init
+ */
+static int remoteDebugInitialized = 0;
+
+/*
+ * the default baud rate *if* kgdb does serial init
+ */
+#define		BAUD_DEFAULT		UART16550_BAUD_38400
+
+/* ======================= END OF CONFIG ======================== */
+
+typedef unsigned char uint8;
+typedef unsigned int uint32;
+
+#define         UART16550_BAUD_2400             2400
+#define         UART16550_BAUD_4800             4800
+#define         UART16550_BAUD_9600             9600
+#define         UART16550_BAUD_19200            19200
+#define         UART16550_BAUD_38400            38400
+#define         UART16550_BAUD_57600            57600
+#define         UART16550_BAUD_115200           115200
+
+#define         UART16550_PARITY_NONE           0
+#define         UART16550_PARITY_ODD            0x08
+#define         UART16550_PARITY_EVEN           0x18
+#define         UART16550_PARITY_MARK           0x28
+#define         UART16550_PARITY_SPACE          0x38
+
+#define         UART16550_DATA_5BIT             0x0
+#define         UART16550_DATA_6BIT             0x1
+#define         UART16550_DATA_7BIT             0x2
+#define         UART16550_DATA_8BIT             0x3
+
+#define         UART16550_STOP_1BIT             0x0
+#define         UART16550_STOP_2BIT             0x4
+
+/* register offset */
+#define         OFS_RCV_BUFFER          0
+#define         OFS_TRANS_HOLD          0
+#define         OFS_SEND_BUFFER         0
+#define         OFS_INTR_ENABLE         (1*REG_OFFSET)
+#define         OFS_INTR_ID             (2*REG_OFFSET)
+#define         OFS_DATA_FORMAT         (3*REG_OFFSET)
+#define         OFS_LINE_CONTROL        (3*REG_OFFSET)
+#define         OFS_MODEM_CONTROL       (4*REG_OFFSET)
+#define         OFS_RS232_OUTPUT        (4*REG_OFFSET)
+#define         OFS_LINE_STATUS         (5*REG_OFFSET)
+#define         OFS_MODEM_STATUS        (6*REG_OFFSET)
+#define         OFS_RS232_INPUT         (6*REG_OFFSET)
+#define         OFS_SCRATCH_PAD         (7*REG_OFFSET)
+
+#define         OFS_DIVISOR_LSB         (0*REG_OFFSET)
+#define         OFS_DIVISOR_MSB         (1*REG_OFFSET)
+
+
+/* memory-mapped read/write of the port */
+#define         UART16550_READ(y)    (*((volatile uint8*)(BASE + y)))
+#define         UART16550_WRITE(y, z)  ((*((volatile uint8*)(BASE + y))) = z)
+
+void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
+{
+        /* disable interrupts */
+        UART16550_WRITE(OFS_INTR_ENABLE, 0);
+
+        /* set up buad rate */
+        {
+                uint32 divisor;
+
+                /* set DIAB bit */
+                UART16550_WRITE(OFS_LINE_CONTROL, 0x80);
+
+                /* set divisor */
+                divisor = MAX_BAUD / baud;
+                UART16550_WRITE(OFS_DIVISOR_LSB, divisor & 0xff);
+                UART16550_WRITE(OFS_DIVISOR_MSB, (divisor & 0xff00) >> 8);
+
+                /* clear DIAB bit */
+                UART16550_WRITE(OFS_LINE_CONTROL, 0x0);
+        }
+
+        /* set data format */
+        UART16550_WRITE(OFS_DATA_FORMAT, data | parity | stop);
+}
+
+
+uint8 getDebugChar(void)
+{
+        if (!remoteDebugInitialized) {
+                remoteDebugInitialized = 1;
+                debugInit(BAUD_DEFAULT,
+                          UART16550_DATA_8BIT,
+                          UART16550_PARITY_NONE, UART16550_STOP_1BIT);
+        }
+
+        while ((UART16550_READ(OFS_LINE_STATUS) & 0x1) == 0);
+        return UART16550_READ(OFS_RCV_BUFFER);
+}
+
+
+int putDebugChar(uint8 byte)
+{
+        if (!remoteDebugInitialized) {
+                remoteDebugInitialized = 1;
+                debugInit(BAUD_DEFAULT,
+                          UART16550_DATA_8BIT,
+                          UART16550_PARITY_NONE, UART16550_STOP_1BIT);
+        }
+
+        while ((UART16550_READ(OFS_LINE_STATUS) & 0x20) == 0);
+        UART16550_WRITE(OFS_SEND_BUFFER, byte);
+        return 1;
+}
diff --git a/arch/mips/ddb5xxx/ddb5477/lcd44780.c b/arch/mips/ddb5xxx/ddb5477/lcd44780.c
new file mode 100644
index 00000000000..35c6c22610c
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/lcd44780.c
@@ -0,0 +1,92 @@
+/*
+ * lcd44780.c
+ * Simple "driver" for a memory-mapped 44780-style LCD display.
+ *
+ * Copyright 2001 Bradley D. LaRonde <brad@ltc.com>
+ *
+ * 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.
+ *
+ */
+
+#define LCD44780_COMMAND   ((volatile unsigned char *)0xbe020000)
+#define LCD44780_DATA      ((volatile unsigned char *)0xbe020001)
+
+#define LCD44780_4BIT_1LINE        0x20
+#define LCD44780_4BIT_2LINE        0x28
+#define LCD44780_8BIT_1LINE        0x30
+#define LCD44780_8BIT_2LINE        0x38
+#define LCD44780_MODE_DEC          0x04
+#define LCD44780_MODE_DEC_SHIFT    0x05
+#define LCD44780_MODE_INC          0x06
+#define LCD44780_MODE_INC_SHIFT    0x07
+#define LCD44780_SCROLL_LEFT       0x18
+#define LCD44780_SCROLL_RIGHT      0x1e
+#define LCD44780_CURSOR_UNDERLINE  0x0e
+#define LCD44780_CURSOR_BLOCK      0x0f
+#define LCD44780_CURSOR_OFF        0x0c
+#define LCD44780_CLEAR             0x01
+#define LCD44780_BLANK             0x08
+#define LCD44780_RESTORE           0x0c  // Same as CURSOR_OFF
+#define LCD44780_HOME              0x02
+#define LCD44780_LEFT              0x10
+#define LCD44780_RIGHT             0x14
+
+void lcd44780_wait(void)
+{
+	int i, j;
+	for(i=0; i < 400; i++)
+		for(j=0; j < 10000; j++);
+}
+
+void lcd44780_command(unsigned char c)
+{
+	*LCD44780_COMMAND = c;
+	lcd44780_wait();
+}
+
+void lcd44780_data(unsigned char c)
+{
+	*LCD44780_DATA = c;
+	lcd44780_wait();
+}
+
+void lcd44780_puts(const char* s)
+{
+	int i,j;
+	int pos = 0;
+
+	lcd44780_command(LCD44780_CLEAR);
+	while(*s) {
+		lcd44780_data(*s);
+		s++;
+		pos++;
+		if (pos == 8) {
+		  /* We must write 32 of spaces to get cursor to 2nd line */
+		  for (j=0; j<32; j++) {
+		    lcd44780_data(' ');
+		  }
+		}
+		if (pos == 16) {
+		  /* We have filled all 16 character positions, so stop
+		     outputing data */
+		  break;
+		}
+	}
+#ifdef LCD44780_PUTS_PAUSE
+	for(i = 1; i < 2000; i++)
+		lcd44780_wait();
+#endif
+}
+
+void lcd44780_init(void)
+{
+	// The display on the RockHopper is physically a single
+	// 16 char line (two 8 char lines concatenated).  bdl
+	lcd44780_command(LCD44780_8BIT_2LINE);
+	lcd44780_command(LCD44780_MODE_INC);
+	lcd44780_command(LCD44780_CURSOR_BLOCK);
+	lcd44780_command(LCD44780_CLEAR);
+}
diff --git a/arch/mips/ddb5xxx/ddb5477/lcd44780.h b/arch/mips/ddb5xxx/ddb5477/lcd44780.h
new file mode 100644
index 00000000000..cf2f0f71eee
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/lcd44780.h
@@ -0,0 +1,15 @@
+/*
+ * lcd44780.h
+ * Simple "driver" for a memory-mapped 44780-style LCD display.
+ *
+ * Copyright 2001 Bradley D. LaRonde <brad@ltc.com>
+ *
+ * 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.
+ *
+ */
+
+void lcd44780_puts(const char* s);
+void lcd44780_init(void);
diff --git a/arch/mips/ddb5xxx/ddb5477/setup.c b/arch/mips/ddb5xxx/ddb5477/setup.c
new file mode 100644
index 00000000000..15c6e543b56
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/setup.c
@@ -0,0 +1,405 @@
+/*
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
+ *
+ * arch/mips/ddb5xxx/ddb5477/setup.c
+ *     Setup file for DDB5477.
+ *
+ * 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.
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/ide.h>
+#include <linux/fs.h>
+#include <linux/ioport.h>
+#include <linux/param.h>	/* for HZ */
+#include <linux/major.h>
+#include <linux/kdev_t.h>
+#include <linux/root_dev.h>
+
+#include <asm/cpu.h>
+#include <asm/bootinfo.h>
+#include <asm/addrspace.h>
+#include <asm/time.h>
+#include <asm/bcache.h>
+#include <asm/irq.h>
+#include <asm/reboot.h>
+#include <asm/gdb-stub.h>
+#include <asm/traps.h>
+#include <asm/debug.h>
+
+#include <asm/ddb5xxx/ddb5xxx.h>
+
+#include "lcd44780.h"
+
+
+#define	USE_CPU_COUNTER_TIMER	/* whether we use cpu counter */
+
+#define	SP_TIMER_BASE			DDB_SPT1CTRL_L
+#define	SP_TIMER_IRQ			VRC5477_IRQ_SPT1
+
+static int bus_frequency = CONFIG_DDB5477_BUS_FREQUENCY*1000;
+
+static void ddb_machine_restart(char *command)
+{
+	static void (*back_to_prom) (void) = (void (*)(void)) 0xbfc00000;
+
+	u32 t;
+
+	/* PCI cold reset */
+	ddb_pci_reset_bus();
+
+	/* CPU cold reset */
+	t = ddb_in32(DDB_CPUSTAT);
+	db_assert((t&1));
+	ddb_out32(DDB_CPUSTAT, t);
+
+	/* Call the PROM */
+	back_to_prom();
+}
+
+static void ddb_machine_halt(void)
+{
+	printk("DDB Vrc-5477 halted.\n");
+	while (1);
+}
+
+static void ddb_machine_power_off(void)
+{
+	printk("DDB Vrc-5477 halted. Please turn off the power.\n");
+	while (1);
+}
+
+extern void rtc_ds1386_init(unsigned long base);
+
+static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
+{
+	unsigned int freq;
+	unsigned char c;
+	unsigned int t1, t2;
+	unsigned i;
+
+	ddb_out32(SP_TIMER_BASE, 0xffffffff);
+	ddb_out32(SP_TIMER_BASE+4, 0x1);
+	ddb_out32(SP_TIMER_BASE+8, 0xffffffff);
+
+	/* check if rtc is running */
+	c= *(volatile unsigned char*)rtc_base;
+	for(i=0; (c == *(volatile unsigned char*)rtc_base) && (i<100000000); i++);
+	if (c == *(volatile unsigned char*)rtc_base) {
+		printk("Failed to detect bus frequency.  Use default 83.3MHz.\n");
+		return 83333000;
+	}
+
+	c= *(volatile unsigned char*)rtc_base;
+	while (c == *(volatile unsigned char*)rtc_base);
+	/* we are now at the turn of 1/100th second, if no error. */
+	t1 = ddb_in32(SP_TIMER_BASE+8);
+
+	for (i=0; i< 10; i++) {
+		c= *(volatile unsigned char*)rtc_base;
+		while (c == *(volatile unsigned char*)rtc_base);
+		/* we are now at the turn of another 1/100th second */
+		t2 = ddb_in32(SP_TIMER_BASE+8);
+	}
+
+	ddb_out32(SP_TIMER_BASE+4, 0x0);	/* disable it again */
+
+	freq = (t1 - t2)*10;
+	printk("DDB bus frequency detection : %u \n", freq);
+	return freq;
+}
+
+static void __init ddb_time_init(void)
+{
+	unsigned long rtc_base;
+	unsigned int i;
+
+	/* we have ds1396 RTC chip */
+	if (mips_machtype == MACH_NEC_ROCKHOPPER
+		||  mips_machtype == MACH_NEC_ROCKHOPPERII) {
+		rtc_base = KSEG1ADDR(DDB_LCS2_BASE);
+	} else {
+		rtc_base = KSEG1ADDR(DDB_LCS1_BASE);
+	}
+	rtc_ds1386_init(rtc_base);
+
+	/* do we need to do run-time detection of bus speed? */
+	if (bus_frequency == 0) {
+		bus_frequency = detect_bus_frequency(rtc_base);
+	}
+
+	/* mips_hpt_frequency is 1/2 of the cpu core freq */
+	i =  (read_c0_config() >> 28 ) & 7;
+	if ((current_cpu_data.cputype == CPU_R5432) && (i == 3)) 
+		i = 4;
+	mips_hpt_frequency = bus_frequency*(i+4)/4;
+}
+
+extern int setup_irq(unsigned int irq, struct irqaction *irqaction);
+
+static void __init ddb_timer_setup(struct irqaction *irq)
+{
+#if defined(USE_CPU_COUNTER_TIMER)
+
+        /* we are using the cpu counter for timer interrupts */
+	setup_irq(CPU_IRQ_BASE + 7, irq);
+
+#else
+
+	/* if we use Special purpose timer 1 */
+	ddb_out32(SP_TIMER_BASE, bus_frequency/HZ);
+	ddb_out32(SP_TIMER_BASE+4, 0x1);
+	setup_irq(SP_TIMER_IRQ, irq);
+
+#endif
+}
+
+static void ddb5477_board_init(void);
+
+extern struct pci_controller ddb5477_ext_controller;
+extern struct pci_controller ddb5477_io_controller;
+
+static int  ddb5477_setup(void)
+{
+	/* initialize board - we don't trust the loader */
+        ddb5477_board_init();
+
+	set_io_port_base(KSEG1ADDR(DDB_PCI_IO_BASE));
+
+	board_time_init = ddb_time_init;
+	board_timer_setup = ddb_timer_setup;
+
+	_machine_restart = ddb_machine_restart;
+	_machine_halt = ddb_machine_halt;
+	_machine_power_off = ddb_machine_power_off;
+
+	/* setup resource limits */
+	ioport_resource.end = DDB_PCI0_IO_SIZE + DDB_PCI1_IO_SIZE - 1;
+	iomem_resource.end = 0xffffffff;
+
+	/* Reboot on panic */
+	panic_timeout = 180;
+
+	register_pci_controller (&ddb5477_ext_controller);
+	register_pci_controller (&ddb5477_io_controller);
+
+	return 0;
+}
+
+early_initcall(ddb5477_setup);
+
+static void __init ddb5477_board_init(void)
+{
+	/* ----------- setup PDARs ------------ */
+
+	/* SDRAM should have been set */
+	db_assert(ddb_in32(DDB_SDRAM0) ==
+		    ddb_calc_pdar(DDB_SDRAM_BASE, board_ram_size, 32, 0, 1));
+
+	/* SDRAM1 should be turned off.  What is this for anyway ? */
+	db_assert( (ddb_in32(DDB_SDRAM1) & 0xf) == 0);
+
+	/* Setup local bus. */
+
+	/* Flash U12 PDAR and timing. */
+	ddb_set_pdar(DDB_LCS0, DDB_LCS0_BASE, DDB_LCS0_SIZE, 16, 0, 0);
+	ddb_out32(DDB_LCST0, 0x00090842);
+
+	/* We need to setup LCS1 and LCS2 differently based on the
+	   board_version */
+	if (mips_machtype == MACH_NEC_ROCKHOPPER) {
+		/* Flash U13 PDAR and timing. */
+		ddb_set_pdar(DDB_LCS1, DDB_LCS1_BASE, DDB_LCS1_SIZE, 16, 0, 0);
+		ddb_out32(DDB_LCST1, 0x00090842);
+
+		/* EPLD (NVRAM, switch, LCD, and mezzanie). */
+		ddb_set_pdar(DDB_LCS2, DDB_LCS2_BASE, DDB_LCS2_SIZE, 8, 0, 0);
+	} else {
+		/* misc */
+		ddb_set_pdar(DDB_LCS1, DDB_LCS1_BASE, DDB_LCS1_SIZE, 8, 0, 0);
+		/* mezzanie (?) */
+		ddb_set_pdar(DDB_LCS2, DDB_LCS2_BASE, DDB_LCS2_SIZE, 16, 0, 0);
+	}
+
+	/* verify VRC5477 base addr */
+	db_assert(ddb_in32(DDB_VRC5477) ==
+		  ddb_calc_pdar(DDB_VRC5477_BASE, DDB_VRC5477_SIZE, 32, 0, 1));
+
+	/* verify BOOT ROM addr */
+	db_assert(ddb_in32(DDB_BOOTCS) ==
+		  ddb_calc_pdar(DDB_BOOTCS_BASE, DDB_BOOTCS_SIZE, 8, 0, 0));
+
+	/* setup PCI windows - window0 for MEM/config, window1 for IO */
+	ddb_set_pdar(DDB_PCIW0, DDB_PCI0_MEM_BASE, DDB_PCI0_MEM_SIZE, 32, 0, 1);
+	ddb_set_pdar(DDB_PCIW1, DDB_PCI0_IO_BASE, DDB_PCI0_IO_SIZE, 32, 0, 1);
+	ddb_set_pdar(DDB_IOPCIW0, DDB_PCI1_MEM_BASE, DDB_PCI1_MEM_SIZE, 32, 0, 1);
+	ddb_set_pdar(DDB_IOPCIW1, DDB_PCI1_IO_BASE, DDB_PCI1_IO_SIZE, 32, 0, 1);
+
+	/* ------------ reset PCI bus and BARs ----------------- */
+	ddb_pci_reset_bus();
+
+	ddb_out32(DDB_BARM010, 0x00000008);
+	ddb_out32(DDB_BARM011, 0x00000008);
+
+	ddb_out32(DDB_BARC0, 0xffffffff);
+	ddb_out32(DDB_BARM230, 0xffffffff);
+	ddb_out32(DDB_BAR00, 0xffffffff);
+	ddb_out32(DDB_BAR10, 0xffffffff);
+	ddb_out32(DDB_BAR20, 0xffffffff);
+	ddb_out32(DDB_BAR30, 0xffffffff);
+	ddb_out32(DDB_BAR40, 0xffffffff);
+	ddb_out32(DDB_BAR50, 0xffffffff);
+	ddb_out32(DDB_BARB0, 0xffffffff);
+
+	ddb_out32(DDB_BARC1, 0xffffffff);
+	ddb_out32(DDB_BARM231, 0xffffffff);
+	ddb_out32(DDB_BAR01, 0xffffffff);
+	ddb_out32(DDB_BAR11, 0xffffffff);
+	ddb_out32(DDB_BAR21, 0xffffffff);
+	ddb_out32(DDB_BAR31, 0xffffffff);
+	ddb_out32(DDB_BAR41, 0xffffffff);
+	ddb_out32(DDB_BAR51, 0xffffffff);
+	ddb_out32(DDB_BARB1, 0xffffffff);
+
+	/*
+	 * We use pci master register 0  for memory space / config space
+	 * And we use register 1 for IO space.
+	 * Note that for memory space, we bump up the pci base address
+	 * so that we have 1:1 mapping between PCI memory and cpu physical.
+	 * For PCI IO space, it starts from 0 in PCI IO space but with
+	 * DDB_xx_IO_BASE in CPU physical address space.
+	 */
+	ddb_set_pmr(DDB_PCIINIT00, DDB_PCICMD_MEM, DDB_PCI0_MEM_BASE,
+		    DDB_PCI_ACCESS_32);
+	ddb_set_pmr(DDB_PCIINIT10, DDB_PCICMD_IO, 0, DDB_PCI_ACCESS_32);
+
+	ddb_set_pmr(DDB_PCIINIT01, DDB_PCICMD_MEM, DDB_PCI1_MEM_BASE,
+		    DDB_PCI_ACCESS_32);
+	ddb_set_pmr(DDB_PCIINIT11, DDB_PCICMD_IO, DDB_PCI0_IO_SIZE,
+                    DDB_PCI_ACCESS_32);
+
+
+	/* PCI cross window should be set properly */
+	ddb_set_pdar(DDB_BARP00, DDB_PCI1_MEM_BASE, DDB_PCI1_MEM_SIZE, 32, 0, 1);
+	ddb_set_pdar(DDB_BARP10, DDB_PCI1_IO_BASE, DDB_PCI1_IO_SIZE, 32, 0, 1);
+	ddb_set_pdar(DDB_BARP01, DDB_PCI0_MEM_BASE, DDB_PCI0_MEM_SIZE, 32, 0, 1);
+	ddb_set_pdar(DDB_BARP11, DDB_PCI0_IO_BASE, DDB_PCI0_IO_SIZE, 32, 0, 1);
+
+	if (mips_machtype == MACH_NEC_ROCKHOPPER
+	   ||  mips_machtype == MACH_NEC_ROCKHOPPERII) {
+		/* Disable bus diagnostics. */ 
+		ddb_out32(DDB_PCICTL0_L, 0);
+		ddb_out32(DDB_PCICTL0_H, 0);
+		ddb_out32(DDB_PCICTL1_L, 0);
+		ddb_out32(DDB_PCICTL1_H, 0);         
+	}
+
+	if (mips_machtype == MACH_NEC_ROCKHOPPER) {
+		u16			vid;
+		struct pci_bus		bus;
+		struct pci_dev		dev_m1533;
+		extern struct pci_ops 	ddb5477_ext_pci_ops;
+
+		bus.parent      = NULL;    /* we scan the top level only */
+		bus.ops         = &ddb5477_ext_pci_ops;
+		dev_m1533.bus         = &bus;
+		dev_m1533.sysdata     = NULL;
+		dev_m1533.devfn       = 7*8;     // slot 7: M1533 SouthBridge.
+		pci_read_config_word(&dev_m1533, 0, &vid);
+		if (vid == PCI_VENDOR_ID_AL) {
+			printk("Changing mips_machtype to MACH_NEC_ROCKHOPPERII\n");
+			mips_machtype = MACH_NEC_ROCKHOPPERII;
+		}
+	}
+
+	/* enable USB input buffers */
+	ddb_out32(DDB_PIBMISC, 0x00000007);
+
+	/* For dual-function pins, make them all non-GPIO */
+	ddb_out32(DDB_GIUFUNSEL, 0x0);
+	// ddb_out32(DDB_GIUFUNSEL, 0xfe0fcfff);  /* NEC recommanded value */
+
+	if (mips_machtype == MACH_NEC_ROCKHOPPERII) {
+
+		/* enable IDE controller on Ali chip (south bridge) */
+		u8			temp8;
+		struct pci_bus		bus;
+		struct pci_dev		dev_m1533;
+		struct pci_dev		dev_m5229;
+		extern struct pci_ops 	ddb5477_ext_pci_ops;
+
+		/* Setup M1535 registers */
+		bus.parent      = NULL;    /* we scan the top level only */
+		bus.ops         = &ddb5477_ext_pci_ops;
+		dev_m1533.bus         = &bus;
+		dev_m1533.sysdata     = NULL;
+		dev_m1533.devfn       = 7*8;     // slot 7: M1533 SouthBridge.
+
+		/* setup IDE controller
+		 * enable IDE controller (bit 6 - 1)
+		 * IDE IDSEL to be addr:A15 (bit 4:5 - 11)
+		 * disable IDE ATA Secondary Bus Signal Pad Control (bit 3 - 0)
+		 * enable IDE ATA Primary Bus Signal Pad Control (bit 2 - 1)
+		 */
+		pci_write_config_byte(&dev_m1533, 0x58, 0x74);
+
+		/* 
+		 * positive decode (bit6 -0)
+		 * enable IDE controler interrupt (bit 4 -1)
+		 * setup SIRQ to point to IRQ 14 (bit 3:0 - 1101)
+		 */
+		pci_write_config_byte(&dev_m1533, 0x44, 0x1d);
+
+		/* Setup M5229 registers */
+		dev_m5229.bus = &bus;
+		dev_m5229.sysdata = NULL;
+		dev_m5229.devfn = 4*8;  	// slot 4 (AD15): M5229 IDE 
+
+		/*
+		 * enable IDE in the M5229 config register 0x50 (bit 0 - 1)
+		 * M5229 IDSEL is addr:15; see above setting 
+		 */
+		pci_read_config_byte(&dev_m5229, 0x50, &temp8);
+		pci_write_config_byte(&dev_m5229, 0x50, temp8 | 0x1);
+
+		/* 
+		 * enable bus master (bit 2)  and IO decoding  (bit 0) 
+		 */
+		pci_read_config_byte(&dev_m5229, 0x04, &temp8);
+		pci_write_config_byte(&dev_m5229, 0x04, temp8 | 0x5);
+
+		/*
+		 * enable native, copied from arch/ppc/k2boot/head.S
+		 * TODO - need volatile, need to be portable 
+		 */
+		pci_write_config_byte(&dev_m5229, 0x09, 0xef);
+
+		/* Set Primary Channel Command Block Timing */ 
+		pci_write_config_byte(&dev_m5229, 0x59, 0x31);
+
+		/* 
+		 * Enable primary channel 40-pin cable
+		 * M5229 register 0x4a (bit 0)
+		 */
+		pci_read_config_byte(&dev_m5229, 0x4a, &temp8);
+		pci_write_config_byte(&dev_m5229, 0x4a, temp8 | 0x1);
+	}
+
+	if (mips_machtype == MACH_NEC_ROCKHOPPER
+	   ||  mips_machtype == MACH_NEC_ROCKHOPPERII) {
+		printk("lcd44780: initializing\n");
+		lcd44780_init();
+		lcd44780_puts("MontaVista Linux");
+	}
+}