Linux-2.6.12-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!

5 files changed, 809 insertions, 0 deletions

diff --git a/arch/mips/ddb5xxx/ddb5074/Makefile b/arch/mips/ddb5xxx/ddb5074/Makefile
new file mode 100644
index 00000000000..488206b8d94
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5074/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for the NEC DDB Vrc-5074 specific kernel interface routines
+# under Linux.
+#
+
+obj-y			+= setup.o irq.o int-handler.o nile4_pic.o
+
+EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/ddb5xxx/ddb5074/int-handler.S b/arch/mips/ddb5xxx/ddb5074/int-handler.S
new file mode 100644
index 00000000000..a78644150b3
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5074/int-handler.S
@@ -0,0 +1,120 @@
+/*
+ *  arch/mips/ddb5074/int-handler.S -- NEC DDB Vrc-5074 interrupt handler
+ *
+ *  Based on arch/mips/sgi/kernel/indyIRQ.S
+ *
+ *  Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ *
+ *  Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
+ *                     Sony Software Development Center Europe (SDCE), Brussels
+ */
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+/* A lot of complication here is taken away because:
+ *
+ * 1) We handle one interrupt and return, sitting in a loop and moving across
+ *    all the pending IRQ bits in the cause register is _NOT_ the answer, the
+ *    common case is one pending IRQ so optimize in that direction.
+ *
+ * 2) We need not check against bits in the status register IRQ mask, that
+ *    would make this routine slow as hell.
+ *
+ * 3) Linux only thinks in terms of all IRQs on or all IRQs off, nothing in
+ *    between like BSD spl() brain-damage.
+ *
+ * Furthermore, the IRQs on the INDY look basically (barring software IRQs
+ * which we don't use at all) like:
+ *
+ *	MIPS IRQ	Source
+ *      --------        ------
+ *             0	Software (ignored)
+ *             1        Software (ignored)
+ *             2        Local IRQ level zero
+ *             3        Local IRQ level one
+ *             4        8254 Timer zero
+ *             5        8254 Timer one
+ *             6        Bus Error
+ *             7        R4k timer (what we use)
+ *
+ * We handle the IRQ according to _our_ priority which is:
+ *
+ * Highest ----     R4k Timer
+ *                  Local IRQ zero
+ *                  Local IRQ one
+ *                  Bus Error
+ *                  8254 Timer zero
+ * Lowest  ----     8254 Timer one
+ *
+ * then we just return, if multiple IRQs are pending then we will just take
+ * another exception, big deal.
+ */
+
+	.text
+	.set	noreorder
+	.set	noat
+	.align	5
+	NESTED(ddbIRQ, PT_SIZE, sp)
+	SAVE_ALL
+	CLI
+	.set	at
+	mfc0	s0, CP0_CAUSE		# get irq mask
+
+#if 1
+	mfc0	t2,CP0_STATUS		# get enabled interrupts
+	and	s0,t2			# isolate allowed ones
+#endif
+	/* First we check for r4k counter/timer IRQ. */
+	andi	a0, s0, CAUSEF_IP2	# delay slot, check local level zero
+	beq	a0, zero, 1f
+	 andi	a0, s0, CAUSEF_IP3	# delay slot, check local level one
+
+	/* Wheee, local level zero interrupt. */
+	jal	ddb_local0_irqdispatch
+	 move	a0, sp			# delay slot
+
+	j	ret_from_irq
+	 nop				# delay slot
+
+1:
+	beq	a0, zero, 1f
+	 andi	a0, s0, CAUSEF_IP6	# delay slot, check bus error
+
+	/* Wheee, local level one interrupt. */
+	move	a0, sp
+	jal	ddb_local1_irqdispatch
+	 nop
+
+	j	ret_from_irq
+	 nop
+
+1:
+	beq	a0, zero, 1f
+	 nop
+
+	/* Wheee, an asynchronous bus error... */
+	move	a0, sp
+	jal	ddb_buserror_irq
+	 nop
+
+	j	ret_from_irq
+	 nop
+
+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.
+	 */
+	andi	a0, s0, (CAUSEF_IP4 | CAUSEF_IP5)
+	beq	a0, zero, 1f
+
+	/* Must be one of the 8254 timers... */
+	move	a0, sp
+	jal	ddb_8254timer_irq
+	 nop
+1:
+	j	ret_from_irq
+	 nop
+	END(ddbIRQ)
diff --git a/arch/mips/ddb5xxx/ddb5074/irq.c b/arch/mips/ddb5xxx/ddb5074/irq.c
new file mode 100644
index 00000000000..45088a1be41
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5074/irq.c
@@ -0,0 +1,159 @@
+/*
+ *  arch/mips/ddb5074/irq.c -- NEC DDB Vrc-5074 interrupt routines
+ *
+ *  Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
+ *                     Sony Software Development Center Europe (SDCE), Brussels
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+
+#include <asm/i8259.h>
+#include <asm/io.h>
+#include <asm/irq_cpu.h>
+#include <asm/ptrace.h>
+#include <asm/nile4.h>
+#include <asm/ddb5xxx/ddb5xxx.h>
+#include <asm/ddb5xxx/ddb5074.h>
+
+
+extern asmlinkage void ddbIRQ(void);
+
+static struct irqaction irq_cascade = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL };
+
+#define M1543_PNP_CONFIG	0x03f0	/* PnP Config Port */
+#define M1543_PNP_INDEX		0x03f0	/* PnP Index Port */
+#define M1543_PNP_DATA		0x03f1	/* PnP Data Port */
+
+#define M1543_PNP_ALT_CONFIG	0x0370	/* Alternative PnP Config Port */
+#define M1543_PNP_ALT_INDEX	0x0370	/* Alternative PnP Index Port */
+#define M1543_PNP_ALT_DATA	0x0371	/* Alternative PnP Data Port */
+
+#define M1543_INT1_MASTER_CTRL	0x0020	/* INT_1 (master) Control Register */
+#define M1543_INT1_MASTER_MASK	0x0021	/* INT_1 (master) Mask Register */
+
+#define M1543_INT1_SLAVE_CTRL	0x00a0	/* INT_1 (slave) Control Register */
+#define M1543_INT1_SLAVE_MASK	0x00a1	/* INT_1 (slave) Mask Register */
+
+#define M1543_INT1_MASTER_ELCR	0x04d0	/* INT_1 (master) Edge/Level Control */
+#define M1543_INT1_SLAVE_ELCR	0x04d1	/* INT_1 (slave) Edge/Level Control */
+
+
+static void m1543_irq_setup(void)
+{
+	/*
+	 *  The ALI M1543 has 13 interrupt inputs, IRQ1..IRQ13.  Not all
+	 *  the possible IO sources in the M1543 are in use by us.  We will
+	 *  use the following mapping:
+	 *
+	 *      IRQ1  - keyboard (default set by M1543)
+	 *      IRQ3  - reserved for UART B (default set by M1543) (note that
+	 *              the schematics for the DDB Vrc-5074 board seem to
+	 *              indicate that IRQ3 is connected to the DS1386
+	 *              watchdog timer interrupt output so we might have
+	 *              a conflict)
+	 *      IRQ4  - reserved for UART A (default set by M1543)
+	 *      IRQ5  - parallel (default set by M1543)
+	 *      IRQ8  - DS1386 time of day (RTC) interrupt
+	 *      IRQ12 - mouse
+	 */
+
+	/*
+	 *  Assing mouse interrupt to IRQ12
+	 */
+
+	/* Enter configuration mode */
+	outb(0x51, M1543_PNP_CONFIG);
+	outb(0x23, M1543_PNP_CONFIG);
+
+	/* Select logical device 7 (Keyboard) */
+	outb(0x07, M1543_PNP_INDEX);
+	outb(0x07, M1543_PNP_DATA);
+
+	/* Select IRQ12 */
+	outb(0x72, M1543_PNP_INDEX);
+	outb(0x0c, M1543_PNP_DATA);
+
+	outb(0x30, M1543_PNP_INDEX);
+	printk("device 7, 0x30: %02x\n",inb(M1543_PNP_DATA));
+
+	outb(0x70, M1543_PNP_INDEX);
+	printk("device 7, 0x70: %02x\n",inb(M1543_PNP_DATA));
+
+	/* Leave configration mode */
+	outb(0xbb, M1543_PNP_CONFIG);
+
+
+}
+
+void ddb_local0_irqdispatch(struct pt_regs *regs)
+{
+	u32 mask;
+	int nile4_irq;
+
+	mask = nile4_get_irq_stat(0);
+
+	/* Handle the timer interrupt first */
+#if 0
+	if (mask & (1 << NILE4_INT_GPT)) {
+		do_IRQ(nile4_to_irq(NILE4_INT_GPT), regs);
+		mask &= ~(1 << NILE4_INT_GPT);
+	}
+#endif
+	for (nile4_irq = 0; mask; nile4_irq++, mask >>= 1)
+		if (mask & 1) {
+			if (nile4_irq == NILE4_INT_INTE) {
+				int i8259_irq;
+
+				nile4_clear_irq(NILE4_INT_INTE);
+				i8259_irq = nile4_i8259_iack();
+				do_IRQ(i8259_irq, regs);
+			} else
+				do_IRQ(nile4_to_irq(nile4_irq), regs);
+
+		}
+}
+
+void ddb_local1_irqdispatch(void)
+{
+	printk("ddb_local1_irqdispatch called\n");
+}
+
+void ddb_buserror_irq(void)
+{
+	printk("ddb_buserror_irq called\n");
+}
+
+void ddb_8254timer_irq(void)
+{
+	printk("ddb_8254timer_irq called\n");
+}
+
+void __init arch_init_irq(void)
+{
+	/* setup cascade interrupts */
+	setup_irq(NILE4_IRQ_BASE  + NILE4_INT_INTE, &irq_cascade);
+	setup_irq(CPU_IRQ_BASE + CPU_NILE4_CASCADE, &irq_cascade);
+
+	set_except_vector(0, ddbIRQ);
+
+	nile4_irq_setup(NILE4_IRQ_BASE);
+	m1543_irq_setup();
+	init_i8259_irqs();
+
+
+	printk("CPU_IRQ_BASE: %d\n",CPU_IRQ_BASE);
+
+	mips_cpu_irq_init(CPU_IRQ_BASE);
+
+	printk("enabling 8259 cascade\n");
+
+	ddb5074_led_hex(0);
+
+	/* Enable the interrupt cascade */
+	nile4_enable_irq(NILE4_IRQ_BASE+IRQ_I8259_CASCADE);
+}
diff --git a/arch/mips/ddb5xxx/ddb5074/nile4_pic.c b/arch/mips/ddb5xxx/ddb5074/nile4_pic.c
new file mode 100644
index 00000000000..68c127cd70c
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5074/nile4_pic.c
@@ -0,0 +1,287 @@
+/*
+ *  arch/mips/ddb5476/nile4.c --
+ *  	low-level PIC code for NEC Vrc-5476 (Nile 4)
+ *
+ *  Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
+ *                     Sony Software Development Center Europe (SDCE), Brussels
+ *
+ *  Copyright 2001 MontaVista Software Inc.
+ *  Author: jsun@mvista.com or jsun@junsun.net
+ *
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+
+#include <asm/addrspace.h>
+
+#include <asm/ddb5xxx/ddb5xxx.h>
+
+static int irq_base;
+
+/*
+ *  Interrupt Programming
+ */
+void nile4_map_irq(int nile4_irq, int cpu_irq)
+{
+	u32 offset, t;
+
+	offset = DDB_INTCTRL;
+	if (nile4_irq >= 8) {
+		offset += 4;
+		nile4_irq -= 8;
+	}
+	t = ddb_in32(offset);
+	t &= ~(7 << (nile4_irq * 4));
+	t |= cpu_irq << (nile4_irq * 4);
+	ddb_out32(offset, t);
+}
+
+void nile4_map_irq_all(int cpu_irq)
+{
+	u32 all, t;
+
+	all = cpu_irq;
+	all |= all << 4;
+	all |= all << 8;
+	all |= all << 16;
+	t = ddb_in32(DDB_INTCTRL);
+	t &= 0x88888888;
+	t |= all;
+	ddb_out32(DDB_INTCTRL, t);
+	t = ddb_in32(DDB_INTCTRL + 4);
+	t &= 0x88888888;
+	t |= all;
+	ddb_out32(DDB_INTCTRL + 4, t);
+}
+
+void nile4_enable_irq(unsigned int nile4_irq)
+{
+	u32 offset, t;
+
+	nile4_irq-=irq_base;
+
+	ddb5074_led_hex(8);
+
+	offset = DDB_INTCTRL;
+	if (nile4_irq >= 8) {
+		offset += 4;
+		nile4_irq -= 8;
+	}
+	ddb5074_led_hex(9);
+	t = ddb_in32(offset);
+	ddb5074_led_hex(0xa);
+	t |= 8 << (nile4_irq * 4);
+	ddb_out32(offset, t);
+	ddb5074_led_hex(0xb);
+}
+
+void nile4_disable_irq(unsigned int nile4_irq)
+{
+	u32 offset, t;
+
+	nile4_irq-=irq_base;
+
+	offset = DDB_INTCTRL;
+	if (nile4_irq >= 8) {
+		offset += 4;
+		nile4_irq -= 8;
+	}
+	t = ddb_in32(offset);
+	t &= ~(8 << (nile4_irq * 4));
+	ddb_out32(offset, t);
+}
+
+void nile4_disable_irq_all(void)
+{
+	ddb_out32(DDB_INTCTRL, 0);
+	ddb_out32(DDB_INTCTRL + 4, 0);
+}
+
+u16 nile4_get_irq_stat(int cpu_irq)
+{
+	return ddb_in16(DDB_INTSTAT0 + cpu_irq * 2);
+}
+
+void nile4_enable_irq_output(int cpu_irq)
+{
+	u32 t;
+
+	t = ddb_in32(DDB_INTSTAT1 + 4);
+	t |= 1 << (16 + cpu_irq);
+	ddb_out32(DDB_INTSTAT1, t);
+}
+
+void nile4_disable_irq_output(int cpu_irq)
+{
+	u32 t;
+
+	t = ddb_in32(DDB_INTSTAT1 + 4);
+	t &= ~(1 << (16 + cpu_irq));
+	ddb_out32(DDB_INTSTAT1, t);
+}
+
+void nile4_set_pci_irq_polarity(int pci_irq, int high)
+{
+	u32 t;
+
+	t = ddb_in32(DDB_INTPPES);
+	if (high)
+		t &= ~(1 << (pci_irq * 2));
+	else
+		t |= 1 << (pci_irq * 2);
+	ddb_out32(DDB_INTPPES, t);
+}
+
+void nile4_set_pci_irq_level_or_edge(int pci_irq, int level)
+{
+	u32 t;
+
+	t = ddb_in32(DDB_INTPPES);
+	if (level)
+		t |= 2 << (pci_irq * 2);
+	else
+		t &= ~(2 << (pci_irq * 2));
+	ddb_out32(DDB_INTPPES, t);
+}
+
+void nile4_clear_irq(int nile4_irq)
+{
+	nile4_irq-=irq_base;
+	ddb_out32(DDB_INTCLR, 1 << nile4_irq);
+}
+
+void nile4_clear_irq_mask(u32 mask)
+{
+	ddb_out32(DDB_INTCLR, mask);
+}
+
+u8 nile4_i8259_iack(void)
+{
+	u8 irq;
+	u32 reg;
+
+	/* Set window 0 for interrupt acknowledge */
+	reg = ddb_in32(DDB_PCIINIT0);
+
+	ddb_set_pmr(DDB_PCIINIT0, DDB_PCICMD_IACK, 0, DDB_PCI_ACCESS_32);
+	irq = *(volatile u8 *) KSEG1ADDR(DDB_PCI_IACK_BASE);
+	/* restore window 0 for PCI I/O space */
+	// ddb_set_pmr(DDB_PCIINIT0, DDB_PCICMD_IO, 0, DDB_PCI_ACCESS_32);
+	ddb_out32(DDB_PCIINIT0, reg);
+
+	/* i8269.c set the base vector to be 0x0 */
+	return irq ;
+}
+
+static unsigned int nile4_irq_startup(unsigned int irq) {
+
+	nile4_enable_irq(irq);
+	return 0;
+
+}
+
+static void nile4_ack_irq(unsigned int irq) {
+
+    ddb5074_led_hex(4);
+
+	nile4_clear_irq(irq);
+    ddb5074_led_hex(2);
+	nile4_disable_irq(irq);
+
+    ddb5074_led_hex(0);
+}
+
+static void nile4_irq_end(unsigned int irq) {
+
+	ddb5074_led_hex(3);
+	if(!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
+	ddb5074_led_hex(5);
+		nile4_enable_irq(irq);
+	ddb5074_led_hex(7);
+	}
+
+	ddb5074_led_hex(1);
+}
+
+#define nile4_irq_shutdown nile4_disable_irq
+
+static hw_irq_controller nile4_irq_controller = {
+    "nile4",
+    nile4_irq_startup,
+    nile4_irq_shutdown,
+    nile4_enable_irq,
+    nile4_disable_irq,
+    nile4_ack_irq,
+    nile4_irq_end,
+    NULL
+};
+
+void nile4_irq_setup(u32 base) {
+
+	int i;
+
+	irq_base=base;
+
+	/* Map all interrupts to CPU int #0 */
+	nile4_map_irq_all(0);
+
+	/* PCI INTA#-E# must be level triggered */
+	nile4_set_pci_irq_level_or_edge(0, 1);
+	nile4_set_pci_irq_level_or_edge(1, 1);
+	nile4_set_pci_irq_level_or_edge(2, 1);
+	nile4_set_pci_irq_level_or_edge(3, 1);
+	nile4_set_pci_irq_level_or_edge(4, 1);
+
+	/* PCI INTA#-D# must be active low, INTE# must be active high */
+	nile4_set_pci_irq_polarity(0, 0);
+	nile4_set_pci_irq_polarity(1, 0);
+	nile4_set_pci_irq_polarity(2, 0);
+	nile4_set_pci_irq_polarity(3, 0);
+	nile4_set_pci_irq_polarity(4, 1);
+
+
+	for (i = 0; i < 16; i++) {
+		nile4_clear_irq(i);
+		nile4_disable_irq(i);
+	}
+
+	/* Enable CPU int #0 */
+	nile4_enable_irq_output(0);
+
+	for (i= base; i< base + NUM_NILE4_INTERRUPTS; i++) {
+		irq_desc[i].status = IRQ_DISABLED;
+		irq_desc[i].action = NULL;
+		irq_desc[i].depth = 1;
+		irq_desc[i].handler = &nile4_irq_controller;
+	}
+}
+
+#if defined(CONFIG_RUNTIME_DEBUG)
+void nile4_dump_irq_status(void)
+{
+	printk(KERN_DEBUG "
+	       CPUSTAT = %p:%p\n", (void *) ddb_in32(DDB_CPUSTAT + 4),
+	       (void *) ddb_in32(DDB_CPUSTAT));
+	printk(KERN_DEBUG "
+	       INTCTRL = %p:%p\n", (void *) ddb_in32(DDB_INTCTRL + 4),
+	       (void *) ddb_in32(DDB_INTCTRL));
+	printk(KERN_DEBUG
+	       "INTSTAT0 = %p:%p\n",
+	       (void *) ddb_in32(DDB_INTSTAT0 + 4),
+	       (void *) ddb_in32(DDB_INTSTAT0));
+	printk(KERN_DEBUG
+	       "INTSTAT1 = %p:%p\n",
+	       (void *) ddb_in32(DDB_INTSTAT1 + 4),
+	       (void *) ddb_in32(DDB_INTSTAT1));
+	printk(KERN_DEBUG
+	       "INTCLR = %p:%p\n", (void *) ddb_in32(DDB_INTCLR + 4),
+	       (void *) ddb_in32(DDB_INTCLR));
+	printk(KERN_DEBUG
+	       "INTPPES = %p:%p\n", (void *) ddb_in32(DDB_INTPPES + 4),
+	       (void *) ddb_in32(DDB_INTPPES));
+}
+
+#endif
diff --git a/arch/mips/ddb5xxx/ddb5074/setup.c b/arch/mips/ddb5xxx/ddb5074/setup.c
new file mode 100644
index 00000000000..a73a5978d55
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5074/setup.c
@@ -0,0 +1,235 @@
+/*
+ *  arch/mips/ddb5074/setup.c -- NEC DDB Vrc-5074 setup routines
+ *
+ *  Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
+ *                     Sony Software Development Center Europe (SDCE), Brussels
+ */
+#include <linux/init.h>
+#include <linux/kbd_ll.h>
+#include <linux/kernel.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/ide.h>
+#include <linux/ioport.h>
+#include <linux/irq.h>
+
+#include <asm/addrspace.h>
+#include <asm/bcache.h>
+#include <asm/irq.h>
+#include <asm/reboot.h>
+#include <asm/gdb-stub.h>
+#include <asm/time.h>
+#include <asm/nile4.h>
+#include <asm/ddb5xxx/ddb5074.h>
+#include <asm/ddb5xxx/ddb5xxx.h>
+
+static void (*back_to_prom) (void) = (void (*)(void)) 0xbfc00000;
+
+static void ddb_machine_restart(char *command)
+{
+	u32 t;
+
+	/* PCI cold reset */
+	t = nile4_in32(NILE4_PCICTRL + 4);
+	t |= 0x40000000;
+	nile4_out32(NILE4_PCICTRL + 4, t);
+	/* CPU cold reset */
+	t = nile4_in32(NILE4_CPUSTAT);
+	t |= 1;
+	nile4_out32(NILE4_CPUSTAT, t);
+	/* Call the PROM */
+	back_to_prom();
+}
+
+static void ddb_machine_halt(void)
+{
+	printk("DDB Vrc-5074 halted.\n");
+	do {
+	} while (1);
+}
+
+static void ddb_machine_power_off(void)
+{
+	printk("DDB Vrc-5074 halted. Please turn off the power.\n");
+	do {
+	} while (1);
+}
+
+extern void rtc_ds1386_init(unsigned long base);
+
+extern void (*board_timer_setup) (struct irqaction * irq);
+
+static void __init ddb_timer_init(struct irqaction *irq)
+{
+	/* set the clock to 1 Hz */
+	nile4_out32(NILE4_T2CTRL, 1000000);
+	/* enable the General-Purpose Timer */
+	nile4_out32(NILE4_T2CTRL + 4, 0x00000001);
+	/* reset timer */
+	nile4_out32(NILE4_T2CNTR, 0);
+	/* enable interrupt */
+	setup_irq(nile4_to_irq(NILE4_INT_GPT), irq);
+	nile4_enable_irq(nile4_to_irq(NILE4_INT_GPT));
+	change_c0_status(ST0_IM,
+		          IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4);
+
+}
+
+static void __init ddb_time_init(void)
+{
+	/* we have ds1396 RTC chip */
+	rtc_ds1386_init(KSEG1ADDR(DDB_PCI_MEM_BASE));
+}
+
+
+
+static void __init ddb5074_setup(void)
+{
+	set_io_port_base(NILE4_PCI_IO_BASE);
+	isa_slot_offset = NILE4_PCI_MEM_BASE;
+	board_timer_setup = ddb_timer_init;
+	board_time_init = ddb_time_init;
+
+
+	_machine_restart = ddb_machine_restart;
+	_machine_halt = ddb_machine_halt;
+	_machine_power_off = ddb_machine_power_off;
+
+	ddb_out32(DDB_BAR0, 0);
+
+	ddb_set_pmr(DDB_PCIINIT0, DDB_PCICMD_IO, 0, 0x10);
+	ddb_set_pmr(DDB_PCIINIT1, DDB_PCICMD_MEM, DDB_PCI_MEM_BASE , 0x10);
+
+	/* Reboot on panic */
+	panic_timeout = 180;
+}
+
+early_initcall(ddb5074_setup);
+
+#define USE_NILE4_SERIAL	0
+
+#if USE_NILE4_SERIAL
+#define ns16550_in(reg)		nile4_in8((reg)*8)
+#define ns16550_out(reg, val)	nile4_out8((reg)*8, (val))
+#else
+#define NS16550_BASE		(NILE4_PCI_IO_BASE+0x03f8)
+static inline u8 ns16550_in(u32 reg)
+{
+	return *(volatile u8 *) (NS16550_BASE + reg);
+}
+
+static inline void ns16550_out(u32 reg, u8 val)
+{
+	*(volatile u8 *) (NS16550_BASE + reg) = val;
+}
+#endif
+
+#define NS16550_RBR		0
+#define NS16550_THR		0
+#define NS16550_DLL		0
+#define NS16550_IER		1
+#define NS16550_DLM		1
+#define NS16550_FCR		2
+#define NS16550_IIR		2
+#define NS16550_LCR		3
+#define NS16550_MCR		4
+#define NS16550_LSR		5
+#define NS16550_MSR		6
+#define NS16550_SCR		7
+
+#define NS16550_LSR_DR		0x01	/* Data ready */
+#define NS16550_LSR_OE		0x02	/* Overrun */
+#define NS16550_LSR_PE		0x04	/* Parity error */
+#define NS16550_LSR_FE		0x08	/* Framing error */
+#define NS16550_LSR_BI		0x10	/* Break */
+#define NS16550_LSR_THRE	0x20	/* Xmit holding register empty */
+#define NS16550_LSR_TEMT	0x40	/* Xmitter empty */
+#define NS16550_LSR_ERR		0x80	/* Error */
+
+
+void _serinit(void)
+{
+#if USE_NILE4_SERIAL
+	ns16550_out(NS16550_LCR, 0x80);
+	ns16550_out(NS16550_DLM, 0x00);
+	ns16550_out(NS16550_DLL, 0x36);	/* 9600 baud */
+	ns16550_out(NS16550_LCR, 0x00);
+	ns16550_out(NS16550_LCR, 0x03);
+	ns16550_out(NS16550_FCR, 0x47);
+#else
+	/* done by PMON */
+#endif
+}
+
+void _putc(char c)
+{
+	while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_THRE));
+	ns16550_out(NS16550_THR, c);
+	if (c == '\n') {
+		while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_THRE));
+		ns16550_out(NS16550_THR, '\r');
+	}
+}
+
+void _puts(const char *s)
+{
+	char c;
+	while ((c = *s++))
+		_putc(c);
+}
+
+char _getc(void)
+{
+	while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_DR));
+	return ns16550_in(NS16550_RBR);
+}
+
+int _testc(void)
+{
+	return (ns16550_in(NS16550_LSR) & NS16550_LSR_DR) != 0;
+}
+
+
+/*
+ *  Hexadecimal 7-segment LED
+ */
+void ddb5074_led_hex(int hex)
+{
+	outb(hex, 0x80);
+}
+
+
+/*
+ *  LEDs D2 and D3, connected to the GPIO pins of the PMU in the ALi M1543
+ */
+struct pci_dev *pci_pmu = NULL;
+
+void ddb5074_led_d2(int on)
+{
+	u8 t;
+
+	if (pci_pmu) {
+		pci_read_config_byte(pci_pmu, 0x7e, &t);
+		if (on)
+			t &= 0x7f;
+		else
+			t |= 0x80;
+		pci_write_config_byte(pci_pmu, 0x7e, t);
+	}
+}
+
+void ddb5074_led_d3(int on)
+{
+	u8 t;
+
+	if (pci_pmu) {
+		pci_read_config_byte(pci_pmu, 0x7e, &t);
+		if (on)
+			t &= 0xbf;
+		else
+			t |= 0x40;
+		pci_write_config_byte(pci_pmu, 0x7e, t);
+	}
+}