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!

15 files changed, 1768 insertions, 0 deletions

diff --git a/arch/sparc/prom/Makefile b/arch/sparc/prom/Makefile
new file mode 100644
index 000000000000..2b217ee40703
--- /dev/null
+++ b/arch/sparc/prom/Makefile
@@ -0,0 +1,9 @@
+# $Id: Makefile,v 1.8 2000/12/15 00:41:22 davem Exp $
+# Makefile for the Sun Boot PROM interface library under
+# Linux.
+#
+
+lib-y := bootstr.o devmap.o devops.o init.o memory.o misc.o mp.o \
+	 palloc.o ranges.o segment.o console.o printf.o tree.o
+
+lib-$(CONFIG_SUN4) += sun4prom.o
diff --git a/arch/sparc/prom/bootstr.c b/arch/sparc/prom/bootstr.c
new file mode 100644
index 000000000000..cfdeac2788d1
--- /dev/null
+++ b/arch/sparc/prom/bootstr.c
@@ -0,0 +1,63 @@
+/* $Id: bootstr.c,v 1.20 2000/02/08 20:24:23 davem Exp $
+ * bootstr.c:  Boot string/argument acquisition from the PROM.
+ *
+ * Copyright(C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/string.h>
+#include <asm/oplib.h>
+#include <asm/sun4prom.h>
+#include <linux/init.h>
+
+#define BARG_LEN  256
+static char barg_buf[BARG_LEN] = { 0 };
+static char fetched __initdata = 0;
+
+extern linux_sun4_romvec *sun4_romvec;
+
+char * __init
+prom_getbootargs(void)
+{
+	int iter;
+	char *cp, *arg;
+
+	/* This check saves us from a panic when bootfd patches args. */
+	if (fetched) {
+		return barg_buf;
+	}
+
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_SUN4:
+		cp = barg_buf;
+		/* Start from 1 and go over fd(0,0,0)kernel */
+		for(iter = 1; iter < 8; iter++) {
+			arg = (*(romvec->pv_v0bootargs))->argv[iter];
+			if(arg == 0) break;
+			while(*arg != 0) {
+				/* Leave place for space and null. */
+				if(cp >= barg_buf + BARG_LEN-2){
+					/* We might issue a warning here. */
+					break;
+				}
+				*cp++ = *arg++;
+			}
+			*cp++ = ' ';
+		}
+		*cp = 0;
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		/*
+		 * V3 PROM cannot supply as with more than 128 bytes
+		 * of an argument. But a smart bootstrap loader can.
+		 */
+		strlcpy(barg_buf, *romvec->pv_v2bootargs.bootargs, sizeof(barg_buf));
+		break;
+	default:
+		break;
+	}
+
+	fetched = 1;
+	return barg_buf;
+}
diff --git a/arch/sparc/prom/console.c b/arch/sparc/prom/console.c
new file mode 100644
index 000000000000..4e6e41d3291d
--- /dev/null
+++ b/arch/sparc/prom/console.c
@@ -0,0 +1,220 @@
+/* $Id: console.c,v 1.25 2001/10/30 04:54:22 davem Exp $
+ * console.c: Routines that deal with sending and receiving IO
+ *            to/from the current console device using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Pete Zaitcev <zaitcev@yahoo.com>
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/sun4prom.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <linux/string.h>
+
+extern void restore_current(void);
+
+static char con_name_jmc[] = "/obio/su@"; /* "/obio/su@0,3002f8"; */
+#define CON_SIZE_JMC	(sizeof(con_name_jmc))
+
+/* Non blocking get character from console input device, returns -1
+ * if no input was taken.  This can be used for polling.
+ */
+int
+prom_nbgetchar(void)
+{
+	static char inc;
+	int i = -1;
+	unsigned long flags;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_SUN4:
+		i = (*(romvec->pv_nbgetchar))();
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		if( (*(romvec->pv_v2devops).v2_dev_read)(*romvec->pv_v2bootargs.fd_stdin , &inc, 0x1) == 1) {
+			i = inc;
+		} else {
+			i = -1;
+		}
+		break;
+	default:
+		i = -1;
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return i; /* Ugh, we could spin forever on unsupported proms ;( */
+}
+
+/* Non blocking put character to console device, returns -1 if
+ * unsuccessful.
+ */
+int
+prom_nbputchar(char c)
+{
+	static char outc;
+	unsigned long flags;
+	int i = -1;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_SUN4:
+		i = (*(romvec->pv_nbputchar))(c);
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		outc = c;
+		if( (*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout, &outc, 0x1) == 1)
+			i = 0;
+		else
+			i = -1;
+		break;
+	default:
+		i = -1;
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return i; /* Ugh, we could spin forever on unsupported proms ;( */
+}
+
+/* Blocking version of get character routine above. */
+char
+prom_getchar(void)
+{
+	int character;
+	while((character = prom_nbgetchar()) == -1) ;
+	return (char) character;
+}
+
+/* Blocking version of put character routine above. */
+void
+prom_putchar(char c)
+{
+	while(prom_nbputchar(c) == -1) ;
+	return;
+}
+
+/* Query for input device type */
+enum prom_input_device
+prom_query_input_device(void)
+{
+	unsigned long flags;
+	int st_p;
+	char propb[64];
+	char *p;
+	int propl;
+
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+	case PROM_SUN4:
+	default:
+		switch(*romvec->pv_stdin) {
+		case PROMDEV_KBD:	return PROMDEV_IKBD;
+		case PROMDEV_TTYA:	return PROMDEV_ITTYA;
+		case PROMDEV_TTYB:	return PROMDEV_ITTYB;
+		default:
+			return PROMDEV_I_UNK;
+		};
+	case PROM_V3:
+		spin_lock_irqsave(&prom_lock, flags);
+		st_p = (*romvec->pv_v2devops.v2_inst2pkg)(*romvec->pv_v2bootargs.fd_stdin);
+		restore_current();
+		spin_unlock_irqrestore(&prom_lock, flags);
+		if(prom_node_has_property(st_p, "keyboard"))
+			return PROMDEV_IKBD;
+		if (prom_getproperty(st_p, "name", propb, sizeof(propb)) != -1) {
+			if(strncmp(propb, "keyboard", sizeof("serial")) == 0)
+				return PROMDEV_IKBD;
+		}
+		if (prom_getproperty(st_p, "device_type", propb, sizeof(propb)) != -1) {
+		if(strncmp(propb, "serial", sizeof("serial")))
+			return PROMDEV_I_UNK;
+		}
+		propl = prom_getproperty(prom_root_node, "stdin-path", propb, sizeof(propb));
+		if(propl > 2) {
+			p = propb;
+			while(*p) p++; p -= 2;
+			if(p[0] == ':') {
+				if(p[1] == 'a')
+					return PROMDEV_ITTYA;
+				else if(p[1] == 'b')
+					return PROMDEV_ITTYB;
+			}
+		}
+		return PROMDEV_I_UNK;
+	}
+}
+
+/* Query for output device type */
+
+enum prom_output_device
+prom_query_output_device(void)
+{
+	unsigned long flags;
+	int st_p;
+	char propb[64];
+	char *p;
+	int propl;
+
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_SUN4:
+		switch(*romvec->pv_stdin) {
+		case PROMDEV_SCREEN:	return PROMDEV_OSCREEN;
+		case PROMDEV_TTYA:	return PROMDEV_OTTYA;
+		case PROMDEV_TTYB:	return PROMDEV_OTTYB;
+		};
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		spin_lock_irqsave(&prom_lock, flags);
+		st_p = (*romvec->pv_v2devops.v2_inst2pkg)(*romvec->pv_v2bootargs.fd_stdout);
+		restore_current();
+		spin_unlock_irqrestore(&prom_lock, flags);
+		propl = prom_getproperty(st_p, "device_type", propb, sizeof(propb));
+		if (propl == sizeof("display") &&
+			strncmp("display", propb, sizeof("display")) == 0)
+		{
+			return PROMDEV_OSCREEN;
+		}
+		if(prom_vers == PROM_V3) {
+			if(propl >= 0 &&
+			    strncmp("serial", propb, sizeof("serial")) != 0)
+				return PROMDEV_O_UNK;
+			propl = prom_getproperty(prom_root_node, "stdout-path",
+						 propb, sizeof(propb));
+			if(propl == CON_SIZE_JMC &&
+			    strncmp(propb, con_name_jmc, CON_SIZE_JMC) == 0)
+				return PROMDEV_OTTYA;
+			if(propl > 2) {
+				p = propb;
+				while(*p) p++; p-= 2;
+				if(p[0]==':') {
+					if(p[1] == 'a')
+						return PROMDEV_OTTYA;
+					else if(p[1] == 'b')
+						return PROMDEV_OTTYB;
+				}
+			}
+		} else {
+			switch(*romvec->pv_stdin) {
+			case PROMDEV_TTYA:	return PROMDEV_OTTYA;
+			case PROMDEV_TTYB:	return PROMDEV_OTTYB;
+			};
+		}
+		break;
+	default:
+		;
+	};
+	return PROMDEV_O_UNK;
+}
diff --git a/arch/sparc/prom/devmap.c b/arch/sparc/prom/devmap.c
new file mode 100644
index 000000000000..eb12073578ad
--- /dev/null
+++ b/arch/sparc/prom/devmap.c
@@ -0,0 +1,54 @@
+/* $Id: devmap.c,v 1.7 2000/08/26 02:38:03 anton Exp $
+ * promdevmap.c:  Map device/IO areas to virtual addresses.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+extern void restore_current(void);
+
+/* Just like the routines in palloc.c, these should not be used
+ * by the kernel at all.  Bootloader facility mainly.  And again,
+ * this is only available on V2 proms and above.
+ */
+
+/* Map physical device address 'paddr' in IO space 'ios' of size
+ * 'num_bytes' to a virtual address, with 'vhint' being a hint to
+ * the prom as to where you would prefer the mapping.  We return
+ * where the prom actually mapped it.
+ */
+char *
+prom_mapio(char *vhint, int ios, unsigned int paddr, unsigned int num_bytes)
+{
+	unsigned long flags;
+	char *ret;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	if((num_bytes == 0) || (paddr == 0)) ret = (char *) 0x0;
+	else
+	ret = (*(romvec->pv_v2devops.v2_dumb_mmap))(vhint, ios, paddr,
+						    num_bytes);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return ret;
+}
+
+/* Unmap an IO/device area that was mapped using the above routine. */
+void
+prom_unmapio(char *vaddr, unsigned int num_bytes)
+{
+	unsigned long flags;
+
+	if(num_bytes == 0x0) return;
+	spin_lock_irqsave(&prom_lock, flags);
+	(*(romvec->pv_v2devops.v2_dumb_munmap))(vaddr, num_bytes);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return;
+}
diff --git a/arch/sparc/prom/devops.c b/arch/sparc/prom/devops.c
new file mode 100644
index 000000000000..61919b54f6cc
--- /dev/null
+++ b/arch/sparc/prom/devops.c
@@ -0,0 +1,89 @@
+/* $Id: devops.c,v 1.13 2000/08/26 02:38:03 anton Exp $
+ * devops.c:  Device operations using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+extern void restore_current(void);
+
+/* Open the device described by the string 'dstr'.  Returns the handle
+ * to that device used for subsequent operations on that device.
+ * Returns -1 on failure.
+ */
+int
+prom_devopen(char *dstr)
+{
+	int handle;
+	unsigned long flags;
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+		handle = (*(romvec->pv_v0devops.v0_devopen))(dstr);
+		if(handle == 0) handle = -1;
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		handle = (*(romvec->pv_v2devops.v2_dev_open))(dstr);
+		break;
+	default:
+		handle = -1;
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return handle;
+}
+
+/* Close the device described by device handle 'dhandle'. */
+int
+prom_devclose(int dhandle)
+{
+	unsigned long flags;
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+		(*(romvec->pv_v0devops.v0_devclose))(dhandle);
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		(*(romvec->pv_v2devops.v2_dev_close))(dhandle);
+		break;
+	default:
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return 0;
+}
+
+/* Seek to specified location described by 'seekhi' and 'seeklo'
+ * for device 'dhandle'.
+ */
+void
+prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
+{
+	unsigned long flags;
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+		(*(romvec->pv_v0devops.v0_seekdev))(dhandle, seekhi, seeklo);
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		(*(romvec->pv_v2devops.v2_dev_seek))(dhandle, seekhi, seeklo);
+		break;
+	default:
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return;
+}
diff --git a/arch/sparc/prom/init.c b/arch/sparc/prom/init.c
new file mode 100644
index 000000000000..b83409c81916
--- /dev/null
+++ b/arch/sparc/prom/init.c
@@ -0,0 +1,95 @@
+/* $Id: init.c,v 1.14 2000/01/29 01:09:12 anton Exp $
+ * init.c:  Initialize internal variables used by the PROM
+ *          library functions.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/sun4prom.h>
+
+struct linux_romvec *romvec;
+enum prom_major_version prom_vers;
+unsigned int prom_rev, prom_prev;
+linux_sun4_romvec *sun4_romvec;
+
+/* The root node of the prom device tree. */
+int prom_root_node;
+
+int prom_stdin, prom_stdout;
+
+/* Pointer to the device tree operations structure. */
+struct linux_nodeops *prom_nodeops;
+
+/* You must call prom_init() before you attempt to use any of the
+ * routines in the prom library.  It returns 0 on success, 1 on
+ * failure.  It gets passed the pointer to the PROM vector.
+ */
+
+extern void prom_meminit(void);
+extern void prom_ranges_init(void);
+
+void __init prom_init(struct linux_romvec *rp)
+{
+#ifdef CONFIG_SUN4
+	extern struct linux_romvec *sun4_prom_init(void);
+	rp = sun4_prom_init();
+#endif
+	romvec = rp;
+
+	switch(romvec->pv_romvers) {
+	case 0:
+		prom_vers = PROM_V0;
+		break;
+	case 2:
+		prom_vers = PROM_V2;
+		break;
+	case 3:
+		prom_vers = PROM_V3;
+		break;
+	case 40:
+		prom_vers = PROM_SUN4;
+		break;
+	default:
+		prom_printf("PROMLIB: Bad PROM version %d\n",
+			    romvec->pv_romvers);
+		prom_halt();
+		break;
+	};
+
+	prom_rev = romvec->pv_plugin_revision;
+	prom_prev = romvec->pv_printrev;
+	prom_nodeops = romvec->pv_nodeops;
+
+	prom_root_node = prom_getsibling(0);
+	if((prom_root_node == 0) || (prom_root_node == -1))
+		prom_halt();
+
+	if((((unsigned long) prom_nodeops) == 0) || 
+	   (((unsigned long) prom_nodeops) == -1))
+		prom_halt();
+
+	if(prom_vers == PROM_V2 || prom_vers == PROM_V3) {
+		prom_stdout = *romvec->pv_v2bootargs.fd_stdout;
+		prom_stdin  = *romvec->pv_v2bootargs.fd_stdin;
+	}
+	
+	prom_meminit();
+
+	prom_ranges_init();
+
+#ifndef CONFIG_SUN4
+	/* SUN4 prints this in sun4_prom_init */
+	printk("PROMLIB: Sun Boot Prom Version %d Revision %d\n",
+	       romvec->pv_romvers, prom_rev);
+#endif
+
+	/* Initialization successful. */
+	return;
+}
diff --git a/arch/sparc/prom/memory.c b/arch/sparc/prom/memory.c
new file mode 100644
index 000000000000..46aa51afec14
--- /dev/null
+++ b/arch/sparc/prom/memory.c
@@ -0,0 +1,216 @@
+/* $Id: memory.c,v 1.15 2000/01/29 01:09:12 anton Exp $
+ * memory.c: Prom routine for acquiring various bits of information
+ *           about RAM on the machine, both virtual and physical.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997 Michael A. Griffith (grif@acm.org)
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/openprom.h>
+#include <asm/sun4prom.h>
+#include <asm/oplib.h>
+
+/* This routine, for consistency, returns the ram parameters in the
+ * V0 prom memory descriptor format.  I choose this format because I
+ * think it was the easiest to work with.  I feel the religious
+ * arguments now... ;)  Also, I return the linked lists sorted to
+ * prevent paging_init() upset stomach as I have not yet written
+ * the pepto-bismol kernel module yet.
+ */
+
+struct linux_prom_registers prom_reg_memlist[64];
+struct linux_prom_registers prom_reg_tmp[64];
+
+struct linux_mlist_v0 prom_phys_total[64];
+struct linux_mlist_v0 prom_prom_taken[64];
+struct linux_mlist_v0 prom_phys_avail[64];
+
+struct linux_mlist_v0 *prom_ptot_ptr = prom_phys_total;
+struct linux_mlist_v0 *prom_ptak_ptr = prom_prom_taken;
+struct linux_mlist_v0 *prom_pavl_ptr = prom_phys_avail;
+
+struct linux_mem_v0 prom_memlist;
+
+
+/* Internal Prom library routine to sort a linux_mlist_v0 memory
+ * list.  Used below in initialization.
+ */
+static void __init
+prom_sortmemlist(struct linux_mlist_v0 *thislist)
+{
+	int swapi = 0;
+	int i, mitr, tmpsize;
+	char *tmpaddr;
+	char *lowest;
+
+	for(i=0; thislist[i].theres_more != 0; i++) {
+		lowest = thislist[i].start_adr;
+		for(mitr = i+1; thislist[mitr-1].theres_more != 0; mitr++)
+			if(thislist[mitr].start_adr < lowest) {
+				lowest = thislist[mitr].start_adr;
+				swapi = mitr;
+			}
+		if(lowest == thislist[i].start_adr) continue;
+		tmpaddr = thislist[swapi].start_adr;
+		tmpsize = thislist[swapi].num_bytes;
+		for(mitr = swapi; mitr > i; mitr--) {
+			thislist[mitr].start_adr = thislist[mitr-1].start_adr;
+			thislist[mitr].num_bytes = thislist[mitr-1].num_bytes;
+		}
+		thislist[i].start_adr = tmpaddr;
+		thislist[i].num_bytes = tmpsize;
+	}
+
+	return;
+}
+
+/* Initialize the memory lists based upon the prom version. */
+void __init prom_meminit(void)
+{
+	int node = 0;
+	unsigned int iter, num_regs;
+	struct linux_mlist_v0 *mptr;  /* ptr for traversal */
+
+	switch(prom_vers) {
+	case PROM_V0:
+		/* Nice, kind of easier to do in this case. */
+		/* First, the total physical descriptors. */
+		for(mptr = (*(romvec->pv_v0mem.v0_totphys)), iter=0;
+		    mptr; mptr=mptr->theres_more, iter++) {
+			prom_phys_total[iter].start_adr = mptr->start_adr;
+			prom_phys_total[iter].num_bytes = mptr->num_bytes;
+			prom_phys_total[iter].theres_more = &prom_phys_total[iter+1];
+		}
+		prom_phys_total[iter-1].theres_more = 0x0;
+		/* Second, the total prom taken descriptors. */
+		for(mptr = (*(romvec->pv_v0mem.v0_prommap)), iter=0;
+		    mptr; mptr=mptr->theres_more, iter++) {
+			prom_prom_taken[iter].start_adr = mptr->start_adr;
+			prom_prom_taken[iter].num_bytes = mptr->num_bytes;
+			prom_prom_taken[iter].theres_more = &prom_prom_taken[iter+1];
+		}
+		prom_prom_taken[iter-1].theres_more = 0x0;
+		/* Last, the available physical descriptors. */
+		for(mptr = (*(romvec->pv_v0mem.v0_available)), iter=0;
+		    mptr; mptr=mptr->theres_more, iter++) {
+			prom_phys_avail[iter].start_adr = mptr->start_adr;
+			prom_phys_avail[iter].num_bytes = mptr->num_bytes;
+			prom_phys_avail[iter].theres_more = &prom_phys_avail[iter+1];
+		}
+		prom_phys_avail[iter-1].theres_more = 0x0;
+		/* Sort all the lists. */
+		prom_sortmemlist(prom_phys_total);
+		prom_sortmemlist(prom_prom_taken);
+		prom_sortmemlist(prom_phys_avail);
+		break;
+	case PROM_V2:
+	case PROM_V3:
+		/* Grrr, have to traverse the prom device tree ;( */
+		node = prom_getchild(prom_root_node);
+		node = prom_searchsiblings(node, "memory");
+		num_regs = prom_getproperty(node, "available",
+					    (char *) prom_reg_memlist,
+					    sizeof(prom_reg_memlist));
+		num_regs = (num_regs/sizeof(struct linux_prom_registers));
+		for(iter=0; iter<num_regs; iter++) {
+			prom_phys_avail[iter].start_adr =
+				(char *) prom_reg_memlist[iter].phys_addr;
+			prom_phys_avail[iter].num_bytes =
+				(unsigned long) prom_reg_memlist[iter].reg_size;
+			prom_phys_avail[iter].theres_more =
+				&prom_phys_avail[iter+1];
+		}
+		prom_phys_avail[iter-1].theres_more = 0x0;
+
+		num_regs = prom_getproperty(node, "reg",
+					    (char *) prom_reg_memlist,
+					    sizeof(prom_reg_memlist));
+		num_regs = (num_regs/sizeof(struct linux_prom_registers));
+		for(iter=0; iter<num_regs; iter++) {
+			prom_phys_total[iter].start_adr =
+				(char *) prom_reg_memlist[iter].phys_addr;
+			prom_phys_total[iter].num_bytes =
+				(unsigned long) prom_reg_memlist[iter].reg_size;
+			prom_phys_total[iter].theres_more =
+				&prom_phys_total[iter+1];
+		}
+		prom_phys_total[iter-1].theres_more = 0x0;
+
+		node = prom_getchild(prom_root_node);
+		node = prom_searchsiblings(node, "virtual-memory");
+		num_regs = prom_getproperty(node, "available",
+					    (char *) prom_reg_memlist,
+					    sizeof(prom_reg_memlist));
+		num_regs = (num_regs/sizeof(struct linux_prom_registers));
+
+		/* Convert available virtual areas to taken virtual
+		 * areas.  First sort, then convert.
+		 */
+		for(iter=0; iter<num_regs; iter++) {
+			prom_prom_taken[iter].start_adr =
+				(char *) prom_reg_memlist[iter].phys_addr;
+			prom_prom_taken[iter].num_bytes =
+				(unsigned long) prom_reg_memlist[iter].reg_size;
+			prom_prom_taken[iter].theres_more =
+				&prom_prom_taken[iter+1];
+		}
+		prom_prom_taken[iter-1].theres_more = 0x0;
+
+		prom_sortmemlist(prom_prom_taken);
+
+		/* Finally, convert. */
+		for(iter=0; iter<num_regs; iter++) {
+			prom_prom_taken[iter].start_adr =
+				prom_prom_taken[iter].start_adr +
+					prom_prom_taken[iter].num_bytes;
+			prom_prom_taken[iter].num_bytes =
+				prom_prom_taken[iter+1].start_adr -
+					prom_prom_taken[iter].start_adr;
+		}
+		prom_prom_taken[iter-1].num_bytes =
+			0xffffffff - (unsigned long) prom_prom_taken[iter-1].start_adr;
+
+		/* Sort the other two lists. */
+		prom_sortmemlist(prom_phys_total);
+		prom_sortmemlist(prom_phys_avail);
+		break;
+
+	case PROM_SUN4:
+#ifdef CONFIG_SUN4	
+		/* how simple :) */
+		prom_phys_total[0].start_adr = 0x0;
+		prom_phys_total[0].num_bytes = *(sun4_romvec->memorysize);
+		prom_phys_total[0].theres_more = 0x0;
+		prom_prom_taken[0].start_adr = 0x0; 
+		prom_prom_taken[0].num_bytes = 0x0;
+		prom_prom_taken[0].theres_more = 0x0;
+		prom_phys_avail[0].start_adr = 0x0;
+		prom_phys_avail[0].num_bytes = *(sun4_romvec->memoryavail);
+		prom_phys_avail[0].theres_more = 0x0;
+#endif
+		break;
+
+	default:
+		break;
+	};
+
+	/* Link all the lists into the top-level descriptor. */
+	prom_memlist.v0_totphys=&prom_ptot_ptr;
+	prom_memlist.v0_prommap=&prom_ptak_ptr;
+	prom_memlist.v0_available=&prom_pavl_ptr;
+
+	return;
+}
+
+/* This returns a pointer to our libraries internal v0 format
+ * memory descriptor.
+ */
+struct linux_mem_v0 *
+prom_meminfo(void)
+{
+	return &prom_memlist;
+}
diff --git a/arch/sparc/prom/misc.c b/arch/sparc/prom/misc.c
new file mode 100644
index 000000000000..c840c2062342
--- /dev/null
+++ b/arch/sparc/prom/misc.c
@@ -0,0 +1,139 @@
+/* $Id: misc.c,v 1.18 2000/08/26 02:38:03 anton Exp $
+ * misc.c:  Miscellaneous prom functions that don't belong
+ *          anywhere else.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/auxio.h>
+#include <asm/system.h>
+
+extern void restore_current(void);
+
+DEFINE_SPINLOCK(prom_lock);
+
+/* Reset and reboot the machine with the command 'bcommand'. */
+void
+prom_reboot(char *bcommand)
+{
+	unsigned long flags;
+	spin_lock_irqsave(&prom_lock, flags);
+	(*(romvec->pv_reboot))(bcommand);
+	/* Never get here. */
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+}
+
+/* Forth evaluate the expression contained in 'fstring'. */
+void
+prom_feval(char *fstring)
+{
+	unsigned long flags;
+	if(!fstring || fstring[0] == 0)
+		return;
+	spin_lock_irqsave(&prom_lock, flags);
+	if(prom_vers == PROM_V0)
+		(*(romvec->pv_fortheval.v0_eval))(strlen(fstring), fstring);
+	else
+		(*(romvec->pv_fortheval.v2_eval))(fstring);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+}
+
+/* We want to do this more nicely some day. */
+extern void (*prom_palette)(int);
+
+/* Drop into the prom, with the chance to continue with the 'go'
+ * prom command.
+ */
+void
+prom_cmdline(void)
+{
+	extern void install_obp_ticker(void);
+	extern void install_linux_ticker(void);
+	unsigned long flags;
+
+	if(!serial_console && prom_palette)
+		prom_palette (1);
+	spin_lock_irqsave(&prom_lock, flags);
+	install_obp_ticker();
+	(*(romvec->pv_abort))();
+	restore_current();
+	install_linux_ticker();
+	spin_unlock_irqrestore(&prom_lock, flags);
+#ifdef CONFIG_SUN_AUXIO
+	set_auxio(AUXIO_LED, 0);
+#endif
+	if(!serial_console && prom_palette)
+		prom_palette (0);
+}
+
+/* Drop into the prom, but completely terminate the program.
+ * No chance of continuing.
+ */
+void
+prom_halt(void)
+{
+	unsigned long flags;
+again:
+	spin_lock_irqsave(&prom_lock, flags);
+	(*(romvec->pv_halt))();
+	/* Never get here. */
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	goto again; /* PROM is out to get me -DaveM */
+}
+
+typedef void (*sfunc_t)(void);
+
+/* Set prom sync handler to call function 'funcp'. */
+void
+prom_setsync(sfunc_t funcp)
+{
+	if(!funcp) return;
+	*romvec->pv_synchook = funcp;
+}
+
+/* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
+ * format type.  'num_bytes' is the number of bytes that your idbuf
+ * has space for.  Returns 0xff on error.
+ */
+unsigned char
+prom_get_idprom(char *idbuf, int num_bytes)
+{
+	int len;
+
+	len = prom_getproplen(prom_root_node, "idprom");
+	if((len>num_bytes) || (len==-1)) return 0xff;
+	if(!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
+		return idbuf[0];
+
+	return 0xff;
+}
+
+/* Get the major prom version number. */
+int
+prom_version(void)
+{
+	return romvec->pv_romvers;
+}
+
+/* Get the prom plugin-revision. */
+int
+prom_getrev(void)
+{
+	return prom_rev;
+}
+
+/* Get the prom firmware print revision. */
+int
+prom_getprev(void)
+{
+	return prom_prev;
+}
diff --git a/arch/sparc/prom/mp.c b/arch/sparc/prom/mp.c
new file mode 100644
index 000000000000..92fe3739fdb8
--- /dev/null
+++ b/arch/sparc/prom/mp.c
@@ -0,0 +1,121 @@
+/* $Id: mp.c,v 1.12 2000/08/26 02:38:03 anton Exp $
+ * mp.c:  OpenBoot Prom Multiprocessor support routines.  Don't call
+ *        these on a UP or else you will halt and catch fire. ;)
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+extern void restore_current(void);
+
+/* Start cpu with prom-tree node 'cpunode' using context described
+ * by 'ctable_reg' in context 'ctx' at program counter 'pc'.
+ *
+ * XXX Have to look into what the return values mean. XXX
+ */
+int
+prom_startcpu(int cpunode, struct linux_prom_registers *ctable_reg, int ctx, char *pc)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+	default:
+		ret = -1;
+		break;
+	case PROM_V3:
+		ret = (*(romvec->v3_cpustart))(cpunode, (int) ctable_reg, ctx, pc);
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return ret;
+}
+
+/* Stop CPU with device prom-tree node 'cpunode'.
+ * XXX Again, what does the return value really mean? XXX
+ */
+int
+prom_stopcpu(int cpunode)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+	default:
+		ret = -1;
+		break;
+	case PROM_V3:
+		ret = (*(romvec->v3_cpustop))(cpunode);
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return ret;
+}
+
+/* Make CPU with device prom-tree node 'cpunode' idle.
+ * XXX Return value, anyone? XXX
+ */
+int
+prom_idlecpu(int cpunode)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+	default:
+		ret = -1;
+		break;
+	case PROM_V3:
+		ret = (*(romvec->v3_cpuidle))(cpunode);
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return ret;
+}
+
+/* Resume the execution of CPU with nodeid 'cpunode'.
+ * XXX Come on, somebody has to know... XXX
+ */
+int
+prom_restartcpu(int cpunode)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+	default:
+		ret = -1;
+		break;
+	case PROM_V3:
+		ret = (*(romvec->v3_cpuresume))(cpunode);
+		break;
+	};
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return ret;
+}
diff --git a/arch/sparc/prom/palloc.c b/arch/sparc/prom/palloc.c
new file mode 100644
index 000000000000..84ce8bc54473
--- /dev/null
+++ b/arch/sparc/prom/palloc.c
@@ -0,0 +1,44 @@
+/* $Id: palloc.c,v 1.4 1996/04/25 06:09:48 davem Exp $
+ * palloc.c:  Memory allocation from the Sun PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+/* You should not call these routines after memory management
+ * has been initialized in the kernel, if fact you should not
+ * use these if at all possible in the kernel.  They are mainly
+ * to be used for a bootloader for temporary allocations which
+ * it will free before jumping into the kernel it has loaded.
+ *
+ * Also, these routines don't work on V0 proms, only V2 and later.
+ */
+
+/* Allocate a chunk of memory of size 'num_bytes' giving a suggestion
+ * of virtual_hint as the preferred virtual base address of this chunk.
+ * There are no guarantees that you will get the allocation, or that
+ * the prom will abide by your "hint".  So check your return value.
+ */
+char *
+prom_alloc(char *virtual_hint, unsigned int num_bytes)
+{
+	if(prom_vers == PROM_V0) return (char *) 0x0;
+	if(num_bytes == 0x0) return (char *) 0x0;
+	return (*(romvec->pv_v2devops.v2_dumb_mem_alloc))(virtual_hint, num_bytes);
+}
+
+/* Free a previously allocated chunk back to the prom at virtual address
+ * 'vaddr' of size 'num_bytes'.  NOTE: This vaddr is not the hint you
+ * used for the allocation, but the virtual address the prom actually
+ * returned to you.  They may be have been the same, they may have not,
+ * doesn't matter.
+ */
+void
+prom_free(char *vaddr, unsigned int num_bytes)
+{
+	if((prom_vers == PROM_V0) || (num_bytes == 0x0)) return;
+	(*(romvec->pv_v2devops.v2_dumb_mem_free))(vaddr, num_bytes);
+	return;
+}
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c
new file mode 100644
index 000000000000..dc8b598bedbb
--- /dev/null
+++ b/arch/sparc/prom/printf.c
@@ -0,0 +1,46 @@
+/*
+ * printf.c:  Internal prom library printf facility.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (c) 2002 Pete Zaitcev (zaitcev@yahoo.com)
+ *
+ * We used to warn all over the code: DO NOT USE prom_printf(),
+ * and yet people do. Anton's banking code was outputing banks
+ * with prom_printf for most of the 2.4 lifetime. Since an effective
+ * stick is not available, we deployed a carrot: an early printk
+ * through PROM by means of -p boot option. This ought to fix it.
+ * USE printk; if you need, deploy -p.
+ */
+
+#include <linux/kernel.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+static char ppbuf[1024];
+
+void
+prom_write(const char *buf, unsigned int n)
+{
+	char ch;
+
+	while (n != 0) {
+		--n;
+		if ((ch = *buf++) == '\n')
+			prom_putchar('\r');
+		prom_putchar(ch);
+	}
+}
+
+void
+prom_printf(char *fmt, ...)
+{
+	va_list args;
+	int i;
+
+	va_start(args, fmt);
+	i = vscnprintf(ppbuf, sizeof(ppbuf), fmt, args);
+	va_end(args);
+
+	prom_write(ppbuf, i);
+}
diff --git a/arch/sparc/prom/ranges.c b/arch/sparc/prom/ranges.c
new file mode 100644
index 000000000000..a2920323c900
--- /dev/null
+++ b/arch/sparc/prom/ranges.c
@@ -0,0 +1,118 @@
+/* $Id: ranges.c,v 1.15 2001/12/19 00:29:51 davem Exp $
+ * ranges.c: Handle ranges in newer proms for obio/sbus.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/init.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/types.h>
+#include <asm/sbus.h>
+#include <asm/system.h>
+
+struct linux_prom_ranges promlib_obio_ranges[PROMREG_MAX];
+int num_obio_ranges;
+
+/* Adjust register values based upon the ranges parameters. */
+static void
+prom_adjust_regs(struct linux_prom_registers *regp, int nregs,
+		 struct linux_prom_ranges *rangep, int nranges)
+{
+	int regc, rngc;
+
+	for (regc = 0; regc < nregs; regc++) {
+		for (rngc = 0; rngc < nranges; rngc++)
+			if (regp[regc].which_io == rangep[rngc].ot_child_space)
+				break; /* Fount it */
+		if (rngc == nranges) /* oops */
+			prom_printf("adjust_regs: Could not find range with matching bus type...\n");
+		regp[regc].which_io = rangep[rngc].ot_parent_space;
+		regp[regc].phys_addr -= rangep[rngc].ot_child_base;
+		regp[regc].phys_addr += rangep[rngc].ot_parent_base;
+	}
+}
+
+void
+prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1,
+		   struct linux_prom_ranges *ranges2, int nranges2)
+{
+	int rng1c, rng2c;
+
+	for(rng1c=0; rng1c < nranges1; rng1c++) {
+		for(rng2c=0; rng2c < nranges2; rng2c++)
+			if(ranges1[rng1c].ot_parent_space == ranges2[rng2c].ot_child_space &&
+			   ranges1[rng1c].ot_parent_base >= ranges2[rng2c].ot_child_base &&
+			   ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base > 0U)
+			break;
+		if(rng2c == nranges2) /* oops */
+			prom_printf("adjust_ranges: Could not find matching bus type...\n");
+		else if (ranges1[rng1c].ot_parent_base + ranges1[rng1c].or_size > ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size)
+			ranges1[rng1c].or_size =
+				ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base;
+		ranges1[rng1c].ot_parent_space = ranges2[rng2c].ot_parent_space;
+		ranges1[rng1c].ot_parent_base += ranges2[rng2c].ot_parent_base;
+	}
+}
+
+/* Apply probed obio ranges to registers passed, if no ranges return. */
+void
+prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs)
+{
+	if(num_obio_ranges)
+		prom_adjust_regs(regs, nregs, promlib_obio_ranges, num_obio_ranges);
+}
+
+void __init prom_ranges_init(void)
+{
+	int node, obio_node;
+	int success;
+
+	num_obio_ranges = 0;
+
+	/* Check for obio and sbus ranges. */
+	node = prom_getchild(prom_root_node);
+	obio_node = prom_searchsiblings(node, "obio");
+
+	if(obio_node) {
+		success = prom_getproperty(obio_node, "ranges",
+					   (char *) promlib_obio_ranges,
+					   sizeof(promlib_obio_ranges));
+		if(success != -1)
+			num_obio_ranges = (success/sizeof(struct linux_prom_ranges));
+	}
+
+	if(num_obio_ranges)
+		prom_printf("PROMLIB: obio_ranges %d\n", num_obio_ranges);
+
+	return;
+}
+
+void
+prom_apply_generic_ranges (int node, int parent, struct linux_prom_registers *regs, int nregs)
+{
+	int success;
+	int num_ranges;
+	struct linux_prom_ranges ranges[PROMREG_MAX];
+	
+	success = prom_getproperty(node, "ranges",
+				   (char *) ranges,
+				   sizeof (ranges));
+	if (success != -1) {
+		num_ranges = (success/sizeof(struct linux_prom_ranges));
+		if (parent) {
+			struct linux_prom_ranges parent_ranges[PROMREG_MAX];
+			int num_parent_ranges;
+		
+			success = prom_getproperty(parent, "ranges",
+				   		   (char *) parent_ranges,
+				   		   sizeof (parent_ranges));
+			if (success != -1) {
+				num_parent_ranges = (success/sizeof(struct linux_prom_ranges));
+				prom_adjust_ranges (ranges, num_ranges, parent_ranges, num_parent_ranges);
+			}
+		}
+		prom_adjust_regs(regs, nregs, ranges, num_ranges);
+	}
+}
diff --git a/arch/sparc/prom/segment.c b/arch/sparc/prom/segment.c
new file mode 100644
index 000000000000..09d6460165ab
--- /dev/null
+++ b/arch/sparc/prom/segment.c
@@ -0,0 +1,29 @@
+/* $Id: segment.c,v 1.7 2000/08/26 02:38:03 anton Exp $
+ * segment.c:  Prom routine to map segments in other contexts before
+ *             a standalone is completely mapped.  This is for sun4 and
+ *             sun4c architectures only.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+extern void restore_current(void);
+
+/* Set physical segment 'segment' at virtual address 'vaddr' in
+ * context 'ctx'.
+ */
+void
+prom_putsegment(int ctx, unsigned long vaddr, int segment)
+{
+	unsigned long flags;
+	spin_lock_irqsave(&prom_lock, flags);
+	(*(romvec->pv_setctxt))(ctx, (char *) vaddr, segment);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return;
+}
diff --git a/arch/sparc/prom/sun4prom.c b/arch/sparc/prom/sun4prom.c
new file mode 100644
index 000000000000..69ca735f0d4e
--- /dev/null
+++ b/arch/sparc/prom/sun4prom.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 1996 The Australian National University.
+ * Copyright (C) 1996 Fujitsu Laboratories Limited
+ * Copyright (C) 1997 Michael A. Griffith (grif@acm.org)
+ * Copyright (C) 1997 Sun Weenie (ko@ko.reno.nv.us)
+ * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * 
+ * This software may be distributed under the terms of the Gnu
+ * Public License version 2 or later
+ *
+ * fake a really simple Sun prom for the SUN4
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <asm/oplib.h>
+#include <asm/idprom.h> 
+#include <asm/machines.h> 
+#include <asm/sun4prom.h>
+#include <asm/asi.h>
+#include <asm/contregs.h>
+#include <linux/init.h>
+
+static struct linux_romvec sun4romvec;
+static struct idprom sun4_idprom;
+
+struct property {
+	char *name;
+	char *value;
+	int length;
+};
+
+struct node {
+	int level;
+	struct property *properties;
+};
+
+struct property null_properties = { NULL, NULL, -1 };
+
+struct property root_properties[] = {
+	{"device_type", "cpu", 4},
+	{"idprom", (char *)&sun4_idprom, sizeof(struct idprom)},
+	{NULL, NULL, -1}
+};
+
+struct node nodes[] = {
+	{ 0, &null_properties }, 
+	{ 0, root_properties },
+	{ -1,&null_properties }
+};
+
+
+static int no_nextnode(int node)
+{
+	if (nodes[node].level == nodes[node+1].level)
+		return node+1;
+	return -1;
+}
+
+static int no_child(int node)
+{
+	if (nodes[node].level == nodes[node+1].level-1)
+		return node+1;
+	return -1;
+}
+
+static struct property *find_property(int node,char *name)
+{
+	struct property *prop = &nodes[node].properties[0];
+	while (prop && prop->name) {
+		if (strcmp(prop->name,name) == 0) return prop;
+		prop++;
+	}
+	return NULL;
+}
+
+static int no_proplen(int node,char *name)
+{
+	struct property *prop = find_property(node,name);
+	if (prop) return prop->length;
+	return -1;
+}
+
+static int no_getprop(int node,char *name,char *value)
+{
+	struct property *prop = find_property(node,name);
+	if (prop) {
+		memcpy(value,prop->value,prop->length);
+		return 1;
+	}
+	return -1;
+}
+
+static int no_setprop(int node,char *name,char *value,int len)
+{
+	return -1;
+}
+
+static char *no_nextprop(int node,char *name)
+{
+	struct property *prop = find_property(node,name);
+	if (prop) return prop[1].name;
+	return NULL;
+}
+
+static struct linux_nodeops sun4_nodeops = {
+	no_nextnode,
+	no_child,
+	no_proplen,
+	no_getprop,
+	no_setprop,
+	no_nextprop
+};
+	
+static int synch_hook;
+
+struct linux_romvec * __init sun4_prom_init(void)
+{
+	int i;
+	unsigned char x;
+	char *p;
+                                
+	p = (char *)&sun4_idprom;
+	for (i = 0; i < sizeof(sun4_idprom); i++) {
+		__asm__ __volatile__ ("lduba [%1] %2, %0" : "=r" (x) :
+				      "r" (AC_IDPROM + i), "i" (ASI_CONTROL));
+		*p++ = x;
+	}
+
+	memset(&sun4romvec,0,sizeof(sun4romvec));
+
+	sun4_romvec = (linux_sun4_romvec *) SUN4_PROM_VECTOR;
+
+	sun4romvec.pv_romvers = 40;
+	sun4romvec.pv_nodeops = &sun4_nodeops;
+	sun4romvec.pv_reboot = sun4_romvec->reboot;
+	sun4romvec.pv_abort = sun4_romvec->abortentry;
+	sun4romvec.pv_halt = sun4_romvec->exittomon;
+	sun4romvec.pv_synchook = (void (**)(void))&synch_hook;
+	sun4romvec.pv_setctxt = sun4_romvec->setcxsegmap;
+	sun4romvec.pv_v0bootargs = sun4_romvec->bootParam;
+	sun4romvec.pv_nbgetchar = sun4_romvec->mayget;
+	sun4romvec.pv_nbputchar = sun4_romvec->mayput;
+	sun4romvec.pv_stdin = sun4_romvec->insource;
+	sun4romvec.pv_stdout = sun4_romvec->outsink;
+	
+	/*
+	 * We turn on the LEDs to let folks without monitors or
+	 * terminals know we booted.   Nothing too fancy now.  They
+	 * are all on, except for LED 5, which blinks.   When we
+	 * have more time, we can teach the penguin to say "By your
+	 * command" or "Activating turbo boost, Michael". :-)
+	 */
+	sun4_romvec->setLEDs(0x0);
+	
+	printk("PROMLIB: Old Sun4 boot PROM monitor %s, romvec version %d\n",
+		sun4_romvec->monid,
+		sun4_romvec->romvecversion);
+
+	return &sun4romvec;
+}
diff --git a/arch/sparc/prom/tree.c b/arch/sparc/prom/tree.c
new file mode 100644
index 000000000000..2bf03ee8cde5
--- /dev/null
+++ b/arch/sparc/prom/tree.c
@@ -0,0 +1,364 @@
+/* $Id: tree.c,v 1.26 2000/08/26 02:38:03 anton Exp $
+ * tree.c: Basic device tree traversal/scanning for the Linux
+ *         prom library.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#define PROMLIB_INTERNAL
+
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/ctype.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+extern void restore_current(void);
+
+static char promlib_buf[128];
+
+/* Internal version of prom_getchild that does not alter return values. */
+int __prom_getchild(int node)
+{
+	unsigned long flags;
+	int cnode;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	cnode = prom_nodeops->no_child(node);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return cnode;
+}
+
+/* Return the child of node 'node' or zero if no this node has no
+ * direct descendent.
+ */
+int prom_getchild(int node)
+{
+	int cnode;
+
+	if (node == -1)
+		return 0;
+
+	cnode = __prom_getchild(node);
+	if (cnode == 0 || cnode == -1)
+		return 0;
+
+	return cnode;
+}
+
+/* Internal version of prom_getsibling that does not alter return values. */
+int __prom_getsibling(int node)
+{
+	unsigned long flags;
+	int cnode;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	cnode = prom_nodeops->no_nextnode(node);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return cnode;
+}
+
+/* Return the next sibling of node 'node' or zero if no more siblings
+ * at this level of depth in the tree.
+ */
+int prom_getsibling(int node)
+{
+	int sibnode;
+
+	if (node == -1)
+		return 0;
+
+	sibnode = __prom_getsibling(node);
+	if (sibnode == 0 || sibnode == -1)
+		return 0;
+
+	return sibnode;
+}
+
+/* Return the length in bytes of property 'prop' at node 'node'.
+ * Return -1 on error.
+ */
+int prom_getproplen(int node, char *prop)
+{
+	int ret;
+	unsigned long flags;
+
+	if((!node) || (!prop))
+		return -1;
+		
+	spin_lock_irqsave(&prom_lock, flags);
+	ret = prom_nodeops->no_proplen(node, prop);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return ret;
+}
+
+/* Acquire a property 'prop' at node 'node' and place it in
+ * 'buffer' which has a size of 'bufsize'.  If the acquisition
+ * was successful the length will be returned, else -1 is returned.
+ */
+int prom_getproperty(int node, char *prop, char *buffer, int bufsize)
+{
+	int plen, ret;
+	unsigned long flags;
+
+	plen = prom_getproplen(node, prop);
+	if((plen > bufsize) || (plen == 0) || (plen == -1))
+		return -1;
+	/* Ok, things seem all right. */
+	spin_lock_irqsave(&prom_lock, flags);
+	ret = prom_nodeops->no_getprop(node, prop, buffer);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return ret;
+}
+
+/* Acquire an integer property and return its value.  Returns -1
+ * on failure.
+ */
+int prom_getint(int node, char *prop)
+{
+	static int intprop;
+
+	if(prom_getproperty(node, prop, (char *) &intprop, sizeof(int)) != -1)
+		return intprop;
+
+	return -1;
+}
+
+/* Acquire an integer property, upon error return the passed default
+ * integer.
+ */
+int prom_getintdefault(int node, char *property, int deflt)
+{
+	int retval;
+
+	retval = prom_getint(node, property);
+	if(retval == -1) return deflt;
+
+	return retval;
+}
+
+/* Acquire a boolean property, 1=TRUE 0=FALSE. */
+int prom_getbool(int node, char *prop)
+{
+	int retval;
+
+	retval = prom_getproplen(node, prop);
+	if(retval == -1) return 0;
+	return 1;
+}
+
+/* Acquire a property whose value is a string, returns a null
+ * string on error.  The char pointer is the user supplied string
+ * buffer.
+ */
+void prom_getstring(int node, char *prop, char *user_buf, int ubuf_size)
+{
+	int len;
+
+	len = prom_getproperty(node, prop, user_buf, ubuf_size);
+	if(len != -1) return;
+	user_buf[0] = 0;
+	return;
+}
+
+
+/* Does the device at node 'node' have name 'name'?
+ * YES = 1   NO = 0
+ */
+int prom_nodematch(int node, char *name)
+{
+	int error;
+
+	static char namebuf[128];
+	error = prom_getproperty(node, "name", namebuf, sizeof(namebuf));
+	if (error == -1) return 0;
+	if(strcmp(namebuf, name) == 0) return 1;
+	return 0;
+}
+
+/* Search siblings at 'node_start' for a node with name
+ * 'nodename'.  Return node if successful, zero if not.
+ */
+int prom_searchsiblings(int node_start, char *nodename)
+{
+
+	int thisnode, error;
+
+	for(thisnode = node_start; thisnode;
+	    thisnode=prom_getsibling(thisnode)) {
+		error = prom_getproperty(thisnode, "name", promlib_buf,
+					 sizeof(promlib_buf));
+		/* Should this ever happen? */
+		if(error == -1) continue;
+		if(strcmp(nodename, promlib_buf)==0) return thisnode;
+	}
+
+	return 0;
+}
+
+/* Gets name in the form prom v2+ uses it (name@x,yyyyy or name (if no reg)) */
+int prom_getname (int node, char *buffer, int len)
+{
+	int i;
+	struct linux_prom_registers reg[PROMREG_MAX];
+	
+	i = prom_getproperty (node, "name", buffer, len);
+	if (i <= 0) return -1;
+	buffer [i] = 0;
+	len -= i;
+	i = prom_getproperty (node, "reg", (char *)reg, sizeof (reg));
+	if (i <= 0) return 0;
+	if (len < 11) return -1;
+	buffer = strchr (buffer, 0);
+	sprintf (buffer, "@%x,%x", reg[0].which_io, (uint)reg[0].phys_addr);
+	return 0;
+}
+
+/* Interal version of nextprop that does not alter return values. */
+char * __prom_nextprop(int node, char * oprop)
+{
+	unsigned long flags;
+	char *prop;
+
+	spin_lock_irqsave(&prom_lock, flags);
+	prop = prom_nodeops->no_nextprop(node, oprop);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+
+	return prop;
+}
+
+/* Return the first property name for node 'node'. */
+/* buffer is unused argument, but as v9 uses it, we need to have the same interface */
+char * prom_firstprop(int node, char *bufer)
+{
+	if (node == 0 || node == -1)
+		return "";
+
+	return __prom_nextprop(node, "");
+}
+
+/* Return the property type string after property type 'oprop'
+ * at node 'node' .  Returns empty string if no more
+ * property types for this node.
+ */
+char * prom_nextprop(int node, char *oprop, char *buffer)
+{
+	if (node == 0 || node == -1)
+		return "";
+
+	return __prom_nextprop(node, oprop);
+}
+
+int prom_finddevice(char *name)
+{
+	char nbuf[128];
+	char *s = name, *d;
+	int node = prom_root_node, node2;
+	unsigned int which_io, phys_addr;
+	struct linux_prom_registers reg[PROMREG_MAX];
+
+	while (*s++) {
+		if (!*s) return node; /* path '.../' is legal */
+		node = prom_getchild(node);
+
+		for (d = nbuf; *s != 0 && *s != '@' && *s != '/';)
+			*d++ = *s++;
+		*d = 0;
+		
+		node = prom_searchsiblings(node, nbuf);
+		if (!node)
+			return 0;
+
+		if (*s == '@') {
+			if (isxdigit(s[1]) && s[2] == ',') {
+				which_io = simple_strtoul(s+1, NULL, 16);
+				phys_addr = simple_strtoul(s+3, &d, 16);
+				if (d != s + 3 && (!*d || *d == '/')
+				    && d <= s + 3 + 8) {
+					node2 = node;
+					while (node2 && node2 != -1) {
+						if (prom_getproperty (node2, "reg", (char *)reg, sizeof (reg)) > 0) {
+							if (which_io == reg[0].which_io && phys_addr == reg[0].phys_addr) {
+								node = node2;
+								break;
+							}
+						}
+						node2 = prom_getsibling(node2);
+						if (!node2 || node2 == -1)
+							break;
+						node2 = prom_searchsiblings(prom_getsibling(node2), nbuf);
+					}
+				}
+			}
+			while (*s != 0 && *s != '/') s++;
+		}
+	}
+	return node;
+}
+
+int prom_node_has_property(int node, char *prop)
+{
+	char *current_property = "";
+
+	do {
+		current_property = prom_nextprop(node, current_property, NULL);
+		if(!strcmp(current_property, prop))
+		   return 1;
+	} while (*current_property);
+	return 0;
+}
+
+/* Set property 'pname' at node 'node' to value 'value' which has a length
+ * of 'size' bytes.  Return the number of bytes the prom accepted.
+ */
+int prom_setprop(int node, char *pname, char *value, int size)
+{
+	unsigned long flags;
+	int ret;
+
+	if(size == 0) return 0;
+	if((pname == 0) || (value == 0)) return 0;
+	spin_lock_irqsave(&prom_lock, flags);
+	ret = prom_nodeops->no_setprop(node, pname, value, size);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	return ret;
+}
+
+int prom_inst2pkg(int inst)
+{
+	int node;
+	unsigned long flags;
+	
+	spin_lock_irqsave(&prom_lock, flags);
+	node = (*romvec->pv_v2devops.v2_inst2pkg)(inst);
+	restore_current();
+	spin_unlock_irqrestore(&prom_lock, flags);
+	if (node == -1) return 0;
+	return node;
+}
+
+/* Return 'node' assigned to a particular prom 'path'
+ * FIXME: Should work for v0 as well
+ */
+int prom_pathtoinode(char *path)
+{
+	int node, inst;
+	
+	inst = prom_devopen (path);
+	if (inst == -1) return 0;
+	node = prom_inst2pkg (inst);
+	prom_devclose (inst);
+	if (node == -1) return 0;
+	return node;
+}