tftp-only netboot code, inspired from mvmeppc, and stripped down; it will

become necessary to boot from unsupported (as far as mvme88k/stand/ is
concerned) network cards, such as the MVME374 and the MVME376.

Not enabled in the build yet, because there are a few issues left, but
it is nonetheless usable...

11 files changed, 638 insertions, 7 deletions

diff --git a/sys/arch/mvme88k/stand/Makefile b/sys/arch/mvme88k/stand/Makefile
index 404fda74972..fd200b56b19 100644
--- a/sys/arch/mvme88k/stand/Makefile
+++ b/sys/arch/mvme88k/stand/Makefile
@@ -1,8 +1,11 @@
-#	$OpenBSD: Makefile,v 1.5 2000/12/28 21:21:25 smurph Exp $
+#	$OpenBSD: Makefile,v 1.6 2004/01/26 19:48:31 miod Exp $
 .if ${MACHINE} == "mvme88k"
 
 SUBDIR=  bugcrt libbug libsa libz wrtvid bootsd bootxx bootst netboot
-#sboot XXX future
+# not ready yet
+# SUBDIR+=	tftpboot
+# not really written yet...
+# SUBDIR+=	sboot
 .endif
 
 SUBDIR+=installboot
diff --git a/sys/arch/mvme88k/stand/libbug/Makefile b/sys/arch/mvme88k/stand/libbug/Makefile
index a8860aecd6c..80cdefcb9e6 100644
--- a/sys/arch/mvme88k/stand/libbug/Makefile
+++ b/sys/arch/mvme88k/stand/libbug/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.6 2003/10/01 20:39:41 miod Exp $
+#	$OpenBSD: Makefile,v 1.7 2004/01/26 19:48:33 miod Exp $
 
 LIB=bug
 
@@ -10,8 +10,8 @@ DIR_SA=$S/lib/libsa
 
 CFLAGS+=-I${.CURDIR}/../../include -I${DIR_SA}
 
-SRCS=	delay.c diskrd.c diskwr.c getbrdid.c inchr.c instat.c outln.c \
-	outstr.c putchar.c return.c rtc_rd.c
+SRCS=	delay.c diskrd.c diskwr.c getbrdid.c inchr.c instat.c \
+	netfopen.c netfread.c outln.c outstr.c putchar.c return.c rtc_rd.c
 
 install:
 
diff --git a/sys/arch/mvme88k/stand/libsa/Makefile b/sys/arch/mvme88k/stand/libsa/Makefile
index 51976db41c9..80e996d6860 100644
--- a/sys/arch/mvme88k/stand/libsa/Makefile
+++ b/sys/arch/mvme88k/stand/libsa/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.5 2003/10/01 20:39:41 miod Exp $
+#	$OpenBSD: Makefile,v 1.6 2004/01/26 19:48:34 miod Exp $
 
 LIB=sa
 
@@ -17,7 +17,7 @@ SRC_net= arp.c ether.c in_cksum.c net.c netif.c rpc.c nfs.c \
 
 SRC_sa=	alloc.c memcpy.c exit.c getfile.c gets.c globals.c \
 	printf.c strerror.c memset.c memcmp.c strncpy.c strcmp.c strlen.c \
-	snprintf.c \
+	strlcpy.c strlcat.c snprintf.c \
 	close.c closeall.c dev.c dkcksum.c \
 	lseek.c open.c nullfs.c read.c fstat.c \
 	ufs.c cread.c
diff --git a/sys/arch/mvme88k/stand/tftpboot/Makefile b/sys/arch/mvme88k/stand/tftpboot/Makefile
new file mode 100644
index 00000000000..5ee68e2aed2
--- /dev/null
+++ b/sys/arch/mvme88k/stand/tftpboot/Makefile
@@ -0,0 +1,41 @@
+#	$OpenBSD: Makefile,v 1.1 2004/01/26 19:48:34 miod Exp $
+
+SIZE?=	size
+STRIP?= strip
+
+S=	${.CURDIR}/../../../..
+DEFS= -DSUN_BOOTPARAMS 
+#-DNETIF_DEBUG
+INCPATH=-I${.CURDIR} -I${.CURDIR}/../libsa -I${.CURDIR}/../libbug \
+	-I${S} -I${S}/lib/libsa
+CFLAGS+=${DEFS} ${INCPATH} ${COPTS}
+CLEANFILES+=tftpboot tftpboot.bin
+
+.include "${S}/arch/mvme88k/stand/bugcrt/Makefile.inc"
+.include "${S}/arch/mvme88k/stand/libbug/Makefile.inc"
+.include "${S}/arch/mvme88k/stand/libsa/Makefile.inc"
+.include "${S}/arch/mvme88k/stand/libz/Makefile.inc"
+
+SRCS=   boot.c conf.c version.c tftpfs.c netdev.c
+OBJS=  ${SRCS:S/.c/.o/g}
+LIBS= ${LIBSA} ${LIBBUG} ${LIBZ}
+LDFLAGS+= -s -N -T ${STAGE2_RELOC} 
+#LDFLAGS+= -nostdlib -s -N -Ttext ${RELOC}
+
+all:	tftpboot.bin
+
+tftpboot: ${OBJS} ${SINGLE} ${LIBS}
+	${LD} ${LDFLAGS} -o $@ \
+		${SINGLE} ${OBJS} ${LIBS}
+#	@${SIZE} $@
+
+tftpboot.bin: tftpboot
+	${STRIP} tftpboot
+	dd ibs=32 skip=1 if=tftpboot of=$@
+#	dd ibs=38 skip=1 if=tftpboot of=$@
+
+install:
+	${INSTALL} ${INSTALL_COPY} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
+	  tftpboot.bin ${DESTDIR}${MDEC_DIR}/tftpboot
+
+.include <bsd.prog.mk>
diff --git a/sys/arch/mvme88k/stand/tftpboot/boot.c b/sys/arch/mvme88k/stand/tftpboot/boot.c
new file mode 100644
index 00000000000..c7445ed95c8
--- /dev/null
+++ b/sys/arch/mvme88k/stand/tftpboot/boot.c
@@ -0,0 +1,80 @@
+/*	$OpenBSD: boot.c,v 1.1 2004/01/26 19:48:34 miod Exp $ */
+/*	$NetBSD: boot.c,v 1.2 1995/09/23 03:42:52 gwr Exp $ */
+
+/*-
+ * Copyright (c) 1982, 1986, 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * 	@(#)boot.c	8.1 (Berkeley) 6/10/93
+ */
+
+#include <sys/param.h>
+#include <sys/reboot.h>
+
+#include <machine/prom.h>
+
+#include "stand.h"
+#include "libsa.h"
+
+int debug;
+int errno;
+extern char *version;
+char    line[80];
+
+int
+main()
+{
+	char *cp, *file;
+	int     io, flag, ret;
+	int     ask = 0;
+
+	printf("\n>> OpenBSD/mvme88k tftpboot [%s]\n", version);
+
+	ret = parse_args(&file, &flag);
+	for (;;) {
+		if (ask) {
+			printf("boot: ");
+			gets(line);
+			if (line[0]) {
+				bugargs.arg_start = line;
+				cp = line;
+				while (cp < (line + sizeof(line) -1) && *cp)
+					cp++;
+				bugargs.arg_end = cp;
+				ret = parse_args(&file, &flag);
+			}
+		}
+		if (ret) {
+			printf("boot: -q returning to MVME-Bug\n");
+			break;
+		}
+		exec_mvme(file, flag);
+		printf("boot: %s: %s\n", file, strerror(errno));
+		ask = 1;
+	}
+	return (0);
+}
diff --git a/sys/arch/mvme88k/stand/tftpboot/conf.c b/sys/arch/mvme88k/stand/tftpboot/conf.c
new file mode 100644
index 00000000000..e1b26c65e08
--- /dev/null
+++ b/sys/arch/mvme88k/stand/tftpboot/conf.c
@@ -0,0 +1,22 @@
+/*	$OpenBSD: conf.c,v 1.1 2004/01/26 19:48:34 miod Exp $	*/
+
+#include <sys/types.h>
+#include <machine/prom.h>
+
+#include <stand.h>
+#include "tftpfs.h"
+#include "netdev.h"
+#include "libsa.h"
+
+struct fs_ops file_system[] = {
+	{ tftpfs_open, tftpfs_close, tftpfs_read, tftpfs_write, tftpfs_seek, tftpfs_stat },
+};
+
+int nfsys = sizeof(file_system) / sizeof(file_system[0]);
+
+struct devsw devsw[] = {
+	{ "net", net_strategy, net_open, net_close, net_ioctl },
+};
+
+int     ndevs = (sizeof(devsw)/sizeof(devsw[0]));
+
diff --git a/sys/arch/mvme88k/stand/tftpboot/netdev.c b/sys/arch/mvme88k/stand/tftpboot/netdev.c
new file mode 100644
index 00000000000..39ed9146b17
--- /dev/null
+++ b/sys/arch/mvme88k/stand/tftpboot/netdev.c
@@ -0,0 +1,137 @@
+/*	$OpenBSD: netdev.c,v 1.1 2004/01/26 19:48:34 miod Exp $ */
+
+/*
+ * Copyright (c) 1993 Paul Kranenburg
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Paul Kranenburg.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <machine/prom.h>
+
+#include "stand.h"
+#include "tftpfs.h"
+
+#include "libsa.h"
+
+struct bugdev_softc {
+	short	clun;
+	short	dlun;
+} bugdev_softc[1];
+
+int
+devopen(f, fname, file)
+	struct open_file *f;
+	const char *fname;
+	char **file;
+{
+	struct bugdev_softc *pp = &bugdev_softc[0];
+
+	pp->clun = (short)bugargs.ctrl_lun;
+	pp->dlun = (short)bugargs.dev_lun;
+
+	f->f_devdata = (void *)pp;
+	f->f_dev = &devsw[0];
+	*file = (char *)fname;
+	return (0);
+}
+
+#define	NFR_TIMEOUT	5
+
+int
+net_strategy(devdata, func, nblk, size, buf, rsize)
+	void *devdata;
+	int func;
+	daddr_t nblk;
+	size_t size;
+	void *buf;
+	size_t *rsize;
+{
+	struct bugdev_softc *pp = (struct bugdev_softc *)devdata;
+	struct mvmeprom_netfread nfr;
+	int attempts;
+
+	for (attempts = 0; attempts < 10; attempts++) {
+		nfr.ctrl = pp->clun;
+		nfr.dev = pp->dlun;
+		nfr.status = 0;
+		nfr.addr = (u_long)buf;
+		nfr.bytes = 0;
+		nfr.blk = nblk;
+		nfr.timeout = NFR_TIMEOUT;
+		mvmeprom_netfread(&nfr);
+	
+		if (rsize) {
+			*rsize = nfr.bytes;
+		}
+
+		if (nfr.status == 0)
+			return (0);
+	}
+
+	return (EIO);
+}
+
+int
+net_open(struct open_file *f, ...)
+{
+	va_list ap;
+	struct mvmeprom_netfopen nfo;
+	struct bugdev_softc *pp = (struct bugdev_softc *)f->f_devdata;
+	char *filename;
+
+	va_start(ap, f);
+	filename = va_arg(ap, char *);
+	va_end(ap);
+
+	nfo.ctrl = pp->clun;
+	nfo.dev = pp->dlun;
+	nfo.status = 0;
+	strlcpy(nfo.filename, filename, sizeof nfo.filename);
+	mvmeprom_netfopen(&nfo);
+	
+#ifdef DEBUG
+	printf("tftp open(%s): error %x\n", filename, nfo.status);
+#endif
+	return (nfo.status);
+}
+
+int
+net_close(f)
+	struct open_file *f;
+{
+	return (0);
+}
+
+int
+net_ioctl(f, cmd, data)
+	struct open_file *f;
+	u_long cmd;
+	void *data;
+{
+	return (EIO);
+}
diff --git a/sys/arch/mvme88k/stand/tftpboot/netdev.h b/sys/arch/mvme88k/stand/tftpboot/netdev.h
new file mode 100644
index 00000000000..4d9b1abc797
--- /dev/null
+++ b/sys/arch/mvme88k/stand/tftpboot/netdev.h
@@ -0,0 +1,6 @@
+/*	$OpenBSD: netdev.h,v 1.1 2004/01/26 19:48:34 miod Exp $	*/
+
+int net_open(struct open_file *, ...);
+int net_close(struct open_file *);
+int net_ioctl(struct open_file *, u_long, void *);
+int net_strategy(void *, int, daddr_t, size_t, void *, size_t *);
diff --git a/sys/arch/mvme88k/stand/tftpboot/tftpfs.c b/sys/arch/mvme88k/stand/tftpboot/tftpfs.c
new file mode 100644
index 00000000000..42cef91e583
--- /dev/null
+++ b/sys/arch/mvme88k/stand/tftpboot/tftpfs.c
@@ -0,0 +1,291 @@
+/*	$OpenBSD: tftpfs.c,v 1.1 2004/01/26 19:48:34 miod Exp $	*/
+
+/*-
+ * Copyright (c) 2001 Steve Murphree, Jr.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by TooLs GmbH.
+ * 4. The name of TooLs GmbH may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ *	TFTP file system.
+ */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <ufs/ffs/fs.h>
+#include <lib/libkern/libkern.h>
+
+#include "stand.h"
+
+/*
+ * In-core open file.
+ */
+struct tftp_file {
+	char 		filename[128];
+	off_t		f_seekp;	/* seek pointer */
+	char		*f_buf;		/* buffer for data block */
+	off_t		f_off;		/* index into buffer for data block */
+	daddr_t		f_buf_blkno;	/* block number of data block */
+	size_t		f_buf_size;
+};
+
+#define TFTP_BLOCK_SHIFT	9
+#define TFTP_BLOCK_SIZE		(1<<TFTP_BLOCK_SHIFT) /* 512 by tftp convention */
+#define TFTP_BLOCK_NO(x)	((x >> TFTP_BLOCK_SHIFT) + 1)
+#define TFTP_BLOCK_OFF(x)	(x % TFTP_BLOCK_SIZE)
+
+static int	read_inode(ino_t, struct open_file *);
+static int	block_map(struct open_file *, daddr_t, daddr_t *);
+static int	tftp_read_file(struct open_file *, char **, size_t *);
+#ifdef COMPAT_UFS
+static void	ffs_oldfscompat(struct fs *);
+#endif
+
+/*
+ * Read a portion of a file into an internal buffer.  Return
+ * the location in the buffer and the amount in the buffer.
+ */
+
+char	tftp_buf[TFTP_BLOCK_SIZE];	/* static */
+struct	tftp_file tftp_ctrl;
+
+static int
+tftp_read_file(f, buf_p, size_p)
+	struct open_file *f;
+	char **buf_p;		/* out */
+	size_t *size_p;		/* out */
+{
+	register struct tftp_file *fp = (struct tftp_file *)f->f_fsdata;
+	long off;
+	register daddr_t file_block;
+	size_t block_size;
+	int i, rc;
+
+	off = TFTP_BLOCK_OFF(fp->f_seekp);
+	file_block = TFTP_BLOCK_NO(fp->f_seekp);
+	block_size = TFTP_BLOCK_SIZE;
+
+	if (file_block == fp->f_buf_blkno + 1) {
+		/* 
+		 * Normal, incremental block transfer.
+		 */
+		rc = (f->f_dev->dv_strategy)(f->f_devdata, F_READ,
+			file_block, block_size, fp->f_buf, &fp->f_buf_size);
+		if (rc)
+			return (rc);
+		if (!(file_block % 4)) /* twiddle every 4 blocks */
+			twiddle();
+		fp->f_buf_blkno = file_block;
+	} else if (file_block > fp->f_buf_blkno + 1) {
+		/* 
+		 * Read ahead to the requested block;  If we need  
+		 * those we skipped, see below.
+		 */
+		for (i = (fp->f_buf_blkno + 1); i <= file_block; i++) {
+			rc = (f->f_dev->dv_strategy)(f->f_devdata, F_READ,
+				i, block_size, fp->f_buf, &fp->f_buf_size);
+			if (rc)
+				return (rc);
+		}
+		fp->f_buf_blkno = file_block;
+	} else if (file_block < fp->f_buf_blkno) {
+		/* 
+		 * Uh oh...  We can't rewind.  Reopen the file 
+		 * and start again.
+		 */
+		char filename[64];
+		strlcpy(filename, fp->filename, sizeof filename);
+                tftpfs_close(f);
+                tftpfs_open(filename, f);
+		for (i = 1; i <= file_block; i++) {
+			rc = (f->f_dev->dv_strategy)(f->f_devdata, F_READ,
+				i, block_size, fp->f_buf, &fp->f_buf_size);
+			if (rc)
+				return (rc);
+		}
+		fp->f_buf_blkno = file_block;
+	}
+
+	/*
+	 * Return address of byte in buffer corresponding to
+	 * offset, and size of remainder of buffer after that
+	 * byte.
+	 */
+	*buf_p = fp->f_buf + off;
+	*size_p = fp->f_buf_size - off;
+
+	/*
+	 * But truncate buffer at end of file.
+	 */
+	if (fp->f_buf_size > block_size){
+		twiddle();
+		return(EIO);
+	}
+
+
+	return (0);
+}
+
+/*
+ * Open a file.
+ */
+int
+tftpfs_open(path, f)
+	char *path;
+	struct open_file *f;
+{
+	struct tftp_file *fp;
+	int rc = 0;
+	
+	/* locate file system specific data structure and zero it.*/
+	fp = &tftp_ctrl;
+	bzero(fp, sizeof(struct tftp_file));
+	f->f_fsdata = (void *)fp;
+	fp->f_seekp = 0;
+	fp->f_buf = tftp_buf;
+	bzero(fp->f_buf, TFTP_BLOCK_SIZE);
+	fp->f_buf_size = 0;
+
+        strlcpy(fp->filename, path, sizeof fp->filename);
+	
+	if (f->f_dev->dv_open == NULL) {
+		panic("No device open()!");
+	}
+	twiddle();
+        rc = (f->f_dev->dv_open)(f, path);
+	return (rc);
+}
+
+int
+tftpfs_close(f)
+	struct open_file *f;
+{
+	register struct tftp_file *fp = (struct tftp_file *)f->f_fsdata;
+
+	fp->f_buf = (void *)0;
+	f->f_fsdata = (void *)0;
+        (f->f_dev->dv_close)(f);
+	return (0);
+}
+
+/*
+ * Copy a portion of a file into kernel memory.
+ * Cross block boundaries when necessary.
+ */
+int
+tftpfs_read(f, start, size, resid)
+	struct open_file *f;
+	void *start;
+	size_t size;
+	size_t *resid;	/* out */
+{
+	register struct tftp_file *fp = (struct tftp_file *)f->f_fsdata;
+	register size_t csize;
+	char *buf;
+	size_t buf_size;
+	int rc = 0;
+	register char *addr = start;
+
+	while (size != 0) {
+		rc = tftp_read_file(f, &buf, &buf_size);
+		if (rc)
+			break;
+
+		csize = size;
+		if (csize > buf_size)
+			csize = buf_size;
+
+		bcopy(buf, addr, csize);
+
+		fp->f_seekp += csize;
+		addr += csize;
+		size -= csize;
+	}
+	if (resid)
+		*resid = size;
+	return (rc);
+}
+
+/*
+ * Not implemented.
+ */
+int
+tftpfs_write(f, start, size, resid)
+	struct open_file *f;
+	void *start;
+	size_t size;
+	size_t *resid;	/* out */
+{
+
+	return (EROFS);
+}
+
+/*
+ * We only see forward.  We can't rewind.
+ */
+off_t
+tftpfs_seek(f, offset, where)
+	struct open_file *f;
+	off_t offset;
+	int where;
+{
+	register struct tftp_file *fp = (struct tftp_file *)f->f_fsdata;
+
+	switch (where) {
+	case SEEK_SET:
+		fp->f_seekp = offset;
+		break;
+	case SEEK_CUR:
+		fp->f_seekp += offset;
+		break;
+	case SEEK_END:
+		errno = EIO;
+		return (-1);
+		break;
+	default:
+		return (-1);
+	}
+	return (fp->f_seekp);
+}
+
+int
+tftpfs_stat(f, sb)
+	struct open_file *f;
+	struct stat *sb;
+{
+	return EIO;
+}
+
+#ifndef NO_READDIR
+int
+tftpfs_readdir (struct open_file *f, char *name)
+{
+	return EIO;
+}
+#endif
+
diff --git a/sys/arch/mvme88k/stand/tftpboot/tftpfs.h b/sys/arch/mvme88k/stand/tftpboot/tftpfs.h
new file mode 100644
index 00000000000..956a3c379ed
--- /dev/null
+++ b/sys/arch/mvme88k/stand/tftpboot/tftpfs.h
@@ -0,0 +1,43 @@
+/*	$OpenBSD: tftpfs.h,v 1.1 2004/01/26 19:48:34 miod Exp $	*/
+
+/*-
+ * Copyright (c) 2001 Steve Murphree, Jr.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by TooLs GmbH.
+ * 4. The name of TooLs GmbH may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+int	tftpfs_open(char *path, struct open_file *f);
+int	tftpfs_close(struct open_file *f);
+int	tftpfs_read(struct open_file *f, void *buf,
+			size_t size, size_t *resid);
+int	tftpfs_write(struct open_file *f, void *buf,
+			size_t size, size_t *resid);
+off_t	tftpfs_seek(struct open_file *f, off_t offset, int where);
+int	tftpfs_stat(struct open_file *f, struct stat *sb);
+#ifndef NO_READDIR
+int	tftpfs_readdir(struct open_file *f, char *name);
+#endif
diff --git a/sys/arch/mvme88k/stand/tftpboot/version.c b/sys/arch/mvme88k/stand/tftpboot/version.c
new file mode 100644
index 00000000000..aeec0400f86
--- /dev/null
+++ b/sys/arch/mvme88k/stand/tftpboot/version.c
@@ -0,0 +1,8 @@
+/*	$OpenBSD: version.c,v 1.1 2004/01/26 19:48:34 miod Exp $ */
+
+/*
+ * make a random change to this file when you want the bootblock
+ * revision to increase. like change this q to an x, or something.
+ */
+
+char *version = "$Revision: 1.1 $";