15 files changed, 464 insertions, 725 deletions

diff --git a/sys/arch/i386/stand/libsa/Makefile b/sys/arch/i386/stand/libsa/Makefile
index 4d9b58bcbfe..23103a5ca61 100644
--- a/sys/arch/i386/stand/libsa/Makefile
+++ b/sys/arch/i386/stand/libsa/Makefile
@@ -1,51 +1,55 @@
-#	$OpenBSD: Makefile,v 1.3 1997/03/31 05:52:24 weingart Exp $
+#	$OpenBSD: Makefile,v 1.4 1997/03/31 23:06:25 mickey Exp $
 
 
-LIB= sa
+LIB=	sa
 
-CFLAGS+=-Wall
-#CFLAGS+=-DBIOS_DEBUG
-#CFLAGS+=-DEXEC_DEBUG
-CFLAGS+=-DNO_IDTR
-CFLAGS+=-DHEAP_START="0x10000"
-CFLAGS+=-DHEAP_LIMIT="0xa0000"
-CFLAGS+=-D__INTERNAL_LIBSA_CREAD
+CFLAGS+=$(SACFLAGS) -D__INTERNAL_LIBSA_CREAD
+CFLAGS+=-DHEAP_START=$(HEAP_START) -DHEAP_LIMIT=$(HEAP_LIMIT)
 CFLAGS+=${DEBUGFLAGS} -I${.CURDIR} -I${.CURDIR}/..
 CFLAGS+=-I${.CURDIR}/../../../..  -I${.CURDIR}/../../../../lib/libsa
+AS+=	-R
 #AS+=	-Wa,-a
 
 S=${.CURDIR}/../../../..
-DIR_SA=$S/lib/libsa
+DIR_SA=	$S/lib/libsa
 DIR_KERN=$S/lib/libkern
 
 # stand routines
-SRCS=   alloc.c exit.c exec.c getfile.c gets.c globals.c strcmp.c \
-        strncmp.c memcmp.c memcpy.c memset.c printf.c strerror.c strncpy.c
+SRCS=	alloc.c exit.c exec.c getfile.c gets.c globals.c strcmp.c strlen.c \
+	strncmp.c memcmp.c memcpy.c memset.c printf.c strerror.c strncpy.c
+
+# math for cd9660
+SRCS+=	divdi3.c qdivrem.c
 
 # io routines
-SRCS+=  close.c closeall.c dev.c disklabel.c dkcksum.c fstat.c ioctl.c lseek.c \
-        open.c read.c stat.c write.c cread.c readdir.c cons.c
+SRCS+=	close.c closeall.c dev.c disklabel.c dkcksum.c fstat.c ioctl.c lseek.c \
+	open.c read.c stat.c write.c cread.c readdir.c cons.c
 
 # network routines
-SRCS+=  arp.c ether.c in_cksum.c net.c netif.c rpc.c
+SRCS+=	arp.c ether.c in_cksum.c net.c netif.c rpc.c
 
 # network info services
-SRCS+=  bootp.c bootparam.c rarp.c
+SRCS+=	bootp.c bootparam.c rarp.c
 
 # boot filesystems
-SRCS+=  ufs.c nfs.c
+SRCS+=	ufs.c nfs.c cd9660.c
 
 # i386 stuff
-SRCS+= asm.S bioscom.S biosdev.c biosdisk.S bioskbd.S biostime.S startprog.S \
-	dev_i386.c exec_i386.c gateA20.c memprobe.c memsize.S probe_keyboard.c \
-	real_prot.S srt0.S unixsys.S
+SRCS+=	asm.S bioscom.S biosdev.c biosdisk.S bioskbd.S biostime.S biosmem.S \
+	dev_i386.c gateA20.c memprobe.c real_prot.S unixsys.S exec_i386.S
 
 NOPROFILE=noprofile
 NOPIC=nopic
 
 .PATH:  ${DIR_SA} ${DIR_KERN}
 
-all: ${SALIB}
+all: machine-links ${SALIB}
 
-.include <bsd.lib.mk>
+machine-links:
+	@rm -f machine i386
+	@ln -s ${S}/arch/i386 i386
+	@ln -s ${S}/arch/i386/include machine
 
+install:
+
+.include <bsd.lib.mk>
diff --git a/sys/arch/i386/stand/libsa/bioscom.S b/sys/arch/i386/stand/libsa/bioscom.S
index f8402007401..db3386dc749 100644
--- a/sys/arch/i386/stand/libsa/bioscom.S
+++ b/sys/arch/i386/stand/libsa/bioscom.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bioscom.S,v 1.2 1997/03/31 03:12:09 weingart Exp $	*/
+/*	$OpenBSD: bioscom.S,v 1.3 1997/03/31 23:06:26 mickey Exp $	*/
 
 /*
  * Mach Operating System
@@ -26,7 +26,7 @@
  * the rights to redistribute these changes.
  *
  *	from: Mach, Revision 2.2  92/04/04  11:34:26  rpd
- *	$Id: bioscom.S,v 1.2 1997/03/31 03:12:09 weingart Exp $
+ *	$Id: bioscom.S,v 1.3 1997/03/31 23:06:26 mickey Exp $
  */
 
 /*
@@ -71,8 +71,9 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 #include <machine/asm.h>
 
+	.data
 port:
-	.long	0x3f8
+	.long	0x2f8
 
 	.text
 
@@ -94,8 +95,9 @@ port:
  *	probe com[0-3] ports and store first found in 'port' variable
  */
 ENTRY(com_probe)
-	push	%ebp
-	mov	%esp, %ebp
+	pushl	%ebp
+	movl	%esp, %ebp
+	pushl	%edx
 
 	/*
 	 * void init_serial(void)
@@ -132,9 +134,10 @@ ENTRY(com_probe)
 	addb	$5, %dl
 	jmp	1b
 2:
+	popl	%edx
+	popl	%ebp
 	xorl	%eax, %eax	# is present (:
 	incl	%eax
-	popl	%ebp
 	ret
 
 /*
@@ -146,6 +149,7 @@ ENTRY(com_probe)
 ENTRY(com_putc)
 	pushl	%ebp
 	movl	%esp, %ebp
+	pushl	%ebx
 
 	movl	$port, %edx	# line status reg
 	add	5, %edx
@@ -158,6 +162,7 @@ ENTRY(com_putc)
 	sub	$5, %edx	# TX output reg
 	outb	%al, %dx	# send this one
 
+	popl	%edx
 	popl	%ebp
 	ret
 
@@ -167,8 +172,7 @@ ENTRY(com_putc)
  */
 
 ENTRY(com_getc)
-	push	%ebp
-	movl	%esp, %ebp
+	pushl	%edx
 
 	movl	$port, %edx	# line status reg
 	addl	5, %edx
@@ -186,7 +190,7 @@ ENTRY(com_getc)
 	jne	2f
 	movb	$0x08, %eax	# look like BS
 2:
-	popl	%ebp
+	popl	%edx
 	ret
 
 /*
@@ -194,8 +198,7 @@ ENTRY(com_getc)
  *       if there is a character pending, return true; otherwise return 0
  */
 ENTRY(com_ischar)
-	push	%ebp
-	mov	%esp, %ebp
+	pushl	%edx
 
 	xorl	%eax, %eax
 	movl	$port, %edx	# line status reg
@@ -203,6 +206,6 @@ ENTRY(com_ischar)
 	inb	%dx, %al
 	andb	$0x01, %al		# RX char available?
 
-	pop	%ebp
+	pop	%edx
 	ret
 
diff --git a/sys/arch/i386/stand/libsa/biosdev.c b/sys/arch/i386/stand/libsa/biosdev.c
index 6049c632923..2bf69993ccb 100644
--- a/sys/arch/i386/stand/libsa/biosdev.c
+++ b/sys/arch/i386/stand/libsa/biosdev.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: biosdev.c,v 1.2 1997/03/31 03:12:09 weingart Exp $	*/
+/*	$OpenBSD: biosdev.c,v 1.3 1997/03/31 23:06:26 mickey Exp $	*/
 
 /*
  * Copyright (c) 1996 Michael Shalayeff
@@ -33,104 +33,65 @@
  */
 
 #include <sys/param.h>
+#include <sys/reboot.h>
+#include <sys/disklabel.h>
+#include <string.h>
 #include <libsa.h>
 #include "biosdev.h"
 
-dev_t	maj, unit, part;
+extern int debug;
 
-int
-biosstrategy(void *devdata, int rw,
-	daddr_t blk, size_t size, void *buf, size_t *rsize)
-{
-	int	error = 0;
+struct biosdisk {
 	u_int	dinfo;
-	register size_t i, nsect;
-	void *local_buf, *lb;			/* 1MB real mode stuff */
-
-	/* We need a buffer below 1MB 
-	 *
-	 * Note: not really needed for the gzip stuff,
-	 * as it already allocates buffers below 1MB,
-	 * but just to make sure (in case using oread()
-	 */
-	lb = local_buf = alloc(size);
-
-#ifdef	BIOS_DEBUG
-	printf("biosstrategy: %s %d bytes @ %d -> %p\n",
-		(rw==F_READ?"reading":"writing"), size, blk, buf);
-#endif
-
-	dinfo = biosdinfo(bootdev);
-	nsect = (size + DEV_BSIZE-1) / DEV_BSIZE;
-	for (i = 0; error == 0 && i < nsect; ) {
-		register int	cyl, hd, sect, n;
-
-		btochs(blk, cyl, hd, sect, 
-			BIOSNHEADS(dinfo), BIOSNSECTS(dinfo));
-		if ((sect + (nsect - i)) >= BIOSNSECTS(dinfo))
-			n = BIOSNSECTS(dinfo) - sect;
-		else
-			n = nsect - i;
-#ifdef	BIOS_DEBUG
-		printf("biosread: dev=%x, cyl=%d, hd=%d, sc=%d, n=%d, buf=%lx",
-			bootdev, cyl, hd, sect, n, (u_long)local_buf);
-#endif
-		if (rw == F_READ)
-			error = biosread (bootdev, cyl, hd, sect, n, local_buf);
-		else
-			error = bioswrite(bootdev, cyl, hd, sect, n, local_buf);
-#ifdef	BIOS_DEBUG
-		printf(", ret=%x\n", error);
-#endif
-		local_buf += n * DEV_BSIZE;
-		i += n;
-		blk += n;
-	}
-
-	/* Copy to final location */
-	memcpy(buf, lb, size);
-	free(lb, size);
-
-	/* Amount we read */
-	*rsize = i * DEV_BSIZE;
-
-	return error;
-}
+	struct {
+		u_int8_t		mboot[DOSPARTOFF];
+		struct dos_partition	dparts[NDOSPART];
+		u_int16_t		signature;
+	}	mbr;
+	struct disklabel disklabel;
+	dev_t	bsddev;
+	u_int8_t biosdev;
+};
 
 int
 biosopen(struct open_file *f, ...)
 {
 	va_list ap;
-	register char	*cp, *fname, **file;
-	static const char *devs[] = {"wd", "hd", "fd", "wt", "sd", NULL};
+	register char	*p, *cp, *fname, **file;
+	char	devname[sizeof(bdevs[0])];
+	dev_t	maj, unit, part;
+	register struct biosdisk *bd;
+	daddr_t off = LABELSECTOR;
+	u_int8_t *buf;
+	int i;
+	size_t rsize;
 
 	va_start(ap, f);
 	cp = fname = *(file = va_arg(ap, char **));
 	va_end(ap);
 
+#ifdef BIOS_DEBUG
+	if (debug)
+		printf("%s\n", cp);
+#endif
+
+	f->f_devdata = NULL;
 	/* search for device specification */
-	while (*cp != 0 && *cp != '(')
-		cp++;
+	for ( p = devname; *cp != 0 && *cp != '(';)
+		*p++ = *cp++;
+	*p = '\0';
 	if (*cp != 0) {
 		if (*cp++ == '(') {
-			char **devp = (char **)devs;
-
-			for (; *devp != NULL && 
-				(fname[0] != (*devp)[0] ||
-				 fname[1] != (*devp)[1]); devp++)
-				;
-			if (*devp == NULL) {
-				printf("Unknown device");
-				errno = ENXIO;
-				return -1;
+			for (maj = 0; maj < NENTS(bdevs) && 
+				strncmp(devname, bdevs[maj], sizeof(devname));
+				maj++);
+			if (maj >= NENTS(bdevs)) {
+				printf("Unknown device: %s\n", devname);
+				return ENXIO;
 			}
-			maj = devp - (char **)devs;
-		}
-		/* check syntax */
-		if (cp[1] != ',' || cp[3] != ')') {
+		} else {
 			printf("Syntax error\n");
-			errno = EINVAL;
-			return -1;
+			return EINVAL;
 		}
 
 		/* get unit */
@@ -138,8 +99,7 @@ biosopen(struct open_file *f, ...)
 			unit = *cp++ - '0';
 		else {
 			printf("Bad unit number\n");
-			errno = ENXIO;
-			return -1;
+			return ENXIO;
 		}
 		cp++;	/* skip ',' */
 		/* get partition */
@@ -147,44 +107,229 @@ biosopen(struct open_file *f, ...)
 			part = *cp++ - 'a';
 		else {
 			printf("Bad partition id\n");
-			errno = ENXIO;
-			return -1;
+			return ENXIO;
 		}
 		cp++;	/* skip ')' */
 		if (*cp != 0)
 			*file = cp;
 
+		bd = alloc(sizeof(*bd));
+		bzero(bd, sizeof(bd));
+
 		switch (maj) {
-		case 0:
-		case 4:
-			bootdev = unit | 0x80;
+		case 0:	/* wd */
+		case 4: /* sd */
+			bd->biosdev = (u_int8_t)(unit | 0x80);
 			break;
-		case 1:
-			bootdev = unit | 0x80;
-			unit = 0;
+		case 2: /* fd */
+			bd->biosdev = (u_int8_t)unit;
 			break;
-		case 2:
-			bootdev = unit;
-			break;
-		case 3:
+		case 3: /* wt */
 #ifdef DEBUG
-			printf("Wangtek is unsupported\n");
+			if (debug)
+				printf("Wangtek is unsupported\n");
 #endif
-			errno = ENXIO;
-			return -1;
 		default:
-			break;
+			free(bd, 0);
+			return ENXIO;
 		}
 
+		bd->bsddev = MAKEBOOTDEV(maj, 0, 0, unit, part);
+		bd->dinfo = biosdinfo((dev_t)bd->biosdev);
+
+	} else
+		return ENOENT;
+
+#ifdef BIOS_DEBUG
+	if (debug) {
+		printf("BIOS geometry: heads: %u, s/t: %u\n",
+			BIOSNHEADS(bd->dinfo), BIOSNSECTS(bd->dinfo));
 	}
+#endif
+
+	if (maj == 0 || maj == 4) {	/* wd, sd */
+		if ((errno = biosstrategy(bd, F_READ, DOSBBSECTOR,
+		    DEV_BSIZE, &bd->mbr, &rsize)) != 0) {
+#ifdef DEBUG
+			if (debug)
+				printf("cannot read MBR\n");
+#endif
+			free(bd, 0);
+			return errno;
+		}
+
+		/* check mbr signature */
+		if (bd->mbr.signature != 0xaa55) {
+#ifdef DEBUG
+			if (debug)
+				printf("bad MBR signature\n");
+#endif
+			free(bd, 0);
+			return EINVAL;
+		}
+
+		for (off = 0, i = 0; i < NDOSPART; i++)
+			if (bd->mbr.dparts[i].dp_typ == DOSPTYP_OPENBSD) {
+				off = bd->mbr.dparts[i].dp_start + LABELSECTOR;
+				break;
+			}
+
+		if (off == 0) {
+#ifdef DEBUG
+			if (debug)
+				printf("no BSD partition\n");
+#endif
+			free(bd, 0);
+			return EINVAL;
+		}
+	}
+
+	buf = alloc(DEV_BSIZE);
+#ifdef BIOS_DEBUG
+	if (debug)
+		printf("loading disklabel @ %u\n", off);
+#endif
+	/* read disklabel */
+	if ((errno = biosstrategy(bd, F_READ, off,
+	    DEV_BSIZE, buf, &rsize)) != 0) {
+#ifdef DEBUG
+		if (debug)
+			printf("failed to read disklabel\n");
+#endif
+		free(buf, 0);
+		free(bd, 0);
+		return errno;
+	}
+
+	if ((p = getdisklabel(buf, &bd->disklabel)) != NULL) {
+#ifdef DEBUG
+		if (debug)
+			printf("%s\n", p);
+#endif
+		free(buf, 0);
+		free(bd, 0);
+		return EINVAL;
+	}
+
+	free(buf,0);
+	f->f_devdata = bd;
 
 	return 0;
 }
 
+/* BIOS disk errors translation table */
+static const struct bd_error {
+	u_int8_t bd_id;
+	int	unix_id;
+	char	*msg;
+} bd_errors[] = {
+	{ 0x00, 0      , "successful completion" },
+	{ 0x01, EINVAL , "invalid function or parameter" },
+	{ 0x02, EIO    , "address mark not found" },
+	{ 0x03, EROFS  , "disk write-protected" },
+	{ 0x04, EIO    , "sector not found/read error" },
+	{ 0x05, EIO    , "reset failed" },
+	{ 0x06, EIO    , "disk changed" },
+	{ 0x07, EIO    , "drive parameter activity failed" },
+	{ 0x08, EINVAL , "DMA overrun" },
+	{ 0x09, EINVAL , "data boundary error" },
+	{ 0x0A, EIO    , "bad sector detected" },
+	{ 0x0B, EIO    , "bad track detected" },
+	{ 0x0C, ENXIO  , "unsupported track or invalid media" },
+	{ 0x0D, EINVAL , "invalid number of sectors on format" },
+	{ 0x0E, EIO    , "control data address mark detected" },
+	{ 0x0F, EIO    , "DMA arbitration level out of range" },
+	{ 0x10, EIO    , "uncorrectable CRC or ECC error on read" },
+	{ 0x11, 0      , "data ECC corrected" },
+	{ 0x20, EIO    , "controller failure" },
+	{ 0x31, ENXIO  , "no media in drive" },
+	{ 0x32, ENXIO  , "incorrect drive type stored in CMOS" },
+	{ 0x40, EIO    , "seek failed" },
+	{ 0x80, EIO    , "operation timed out" },
+	{ 0xAA, EIO    , "drive not ready" },
+	{ 0xB0, EIO    , "volume not locked in drive" },
+	{ 0xB1, EIO    , "volume locked in drive" },
+	{ 0xB2, EIO    , "volume not removable" },
+	{ 0xB3, EDEADLK, "volume in use" },
+	{ 0xB4, ENOLCK , "lock count exceeded" },
+	{ 0xB5, EINVAL , "valid eject request failed" },
+	{ 0xBB, EIO    , "undefined error" },
+	{ 0xCC, EROFS  , "write fault" },
+	{ 0xE0, EIO    , "status register error" },
+	{ 0xFF, EIO    , "sense operation failed" }
+};
+int	bd_nents = NENTS(bd_errors);
+
 int
-biosclose(struct open_file *f)
+biosstrategy(void *devdata, int rw,
+	daddr_t blk, size_t size, void *buf, size_t *rsize)
 {
+	u_int8_t error = 0;
+	register struct biosdisk *bd = (struct biosdisk *)devdata;
+	register size_t i, nsect, n;
+	register const struct bd_error *p = bd_errors;
 
+	nsect = (size + DEV_BSIZE-1) / DEV_BSIZE;
+	blk += bd->disklabel.d_partitions[B_PARTITION(bd->bsddev)].p_offset;
+
+#ifdef	BIOS_DEBUG
+	if (debug)
+		printf("biosstrategy(%p,%s,%u,%u,%p,%p), dev=%x:%x\nbiosread:",
+		       bd, (rw==F_READ?"reading":"writing"), blk, size,
+		       buf, rsize, bd->biosdev, bd->bsddev);
+#endif
+
+	for (i = 0; error == 0 && i < nsect;
+	     i += n, blk += n, buf += n * DEV_BSIZE) {
+		register int	cyl, hd, sect;
+#if 0
+		/* fight seg boundary error XXX */
+		static u_int8_t bbuf[DEV_BSIZE];
+#endif
+
+		btochs(blk, cyl, hd, sect, 
+			BIOSNHEADS(bd->dinfo), BIOSNSECTS(bd->dinfo));
+		if ((sect + (nsect - i)) >= BIOSNSECTS(bd->dinfo))
+			n = BIOSNSECTS(bd->dinfo) - sect;
+		else
+			n = nsect - i;
+#ifdef	BIOS_DEBUG
+		if (debug)
+			printf(" (%d,%d,%d,%d)@%p", cyl, hd, sect, n, buf);
+#endif
+		if (rw == F_READ) {
+			error = biosread (bd->biosdev, cyl, hd, sect, n, buf);
+			/* bcopy(bbuf, buf, sizeof(bbuf)); */
+		} else {
+			/* bcopy(buf, bbuf, sizeof(bbuf)); */
+			error = bioswrite(bd->biosdev, cyl, hd, sect, n, buf);
+		}
+		if (error != 0) {
+			for (p = bd_errors; p < &bd_errors[bd_nents] &&
+			     p->bd_id != error; p++);
+
+			if (error == 0x11) /* ECC corrected */
+				error = 0;
+		}
+	}
+
+#ifdef	BIOS_DEBUG
+	if (debug) {
+		if (error != 0)
+			printf("=%x(%s)", p->bd_id, p->msg);
+		putchar('\n');
+	}
+#endif
+
+	*rsize = i * DEV_BSIZE;
+
+	return p->unix_id;
+}
+
+int
+biosclose(struct open_file *f)
+{
+	free(f->f_devdata, 0);
 	return 0;
 }
 
diff --git a/sys/arch/i386/stand/libsa/biosdev.h b/sys/arch/i386/stand/libsa/biosdev.h
index da619027b82..9ef4becc2af 100644
--- a/sys/arch/i386/stand/libsa/biosdev.h
+++ b/sys/arch/i386/stand/libsa/biosdev.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: biosdev.h,v 1.2 1997/03/31 03:12:10 weingart Exp $	*/
+/*	$OpenBSD: biosdev.h,v 1.3 1997/03/31 23:06:27 mickey Exp $	*/
 
 /*
  * Copyright (c) 1996 Michael Shalayeff
@@ -60,5 +60,8 @@ void	com_putc __P((int c));
 int	com_getc __P((void));
 int	com_ischar __P((void));
 
+/* biosmem.S */
+u_int	biosmem __P((int));
+
 /* biostime.S */
 void	usleep __P((u_long));
diff --git a/sys/arch/i386/stand/libsa/biosdisk.S b/sys/arch/i386/stand/libsa/biosdisk.S
index f036d0f95c0..f54e23efccc 100644
--- a/sys/arch/i386/stand/libsa/biosdisk.S
+++ b/sys/arch/i386/stand/libsa/biosdisk.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: biosdisk.S,v 1.2 1997/03/31 03:12:11 weingart Exp $	*/
+/*	$OpenBSD: biosdisk.S,v 1.3 1997/03/31 23:06:27 mickey Exp $	*/
 
 /*
  * Ported to boot 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
@@ -70,10 +70,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 ENTRY(biosread)
 	pushl	%ebp
 	movl	%esp, %ebp
-	pushl	%ebx
-	pushl	%esi
-	pushl	%edi
-	push	%es
+	pushal
 
 	movb	8(%ebp), %dl	# device
 	movw	12(%ebp), %cx
@@ -87,44 +84,30 @@ ENTRY(biosread)
 	movb	24(%ebp), %al	# number of sectors
 	movl	%eax, %esi	# save this against mode switch
 	movl	28(%ebp), %ebx	# offset
-
-
-	# prot_to_real will set %es to BOOTSEG
-	# Which means %cs == %es.
-	# XXX - This hoses things severly.  Better
-	# recoup %es to point to the base of the given
-	# buffer, and let %bx be the index into it,
-	# that way we can read a max of 64K give or
-	# take 15 bytes anyways.
-
-	# Save %es in %edi
-	movl	%ebx, %eax
-	shrl	$4, %eax
-	movl	%eax, %edi
-	andl	$0xF, %ebx
+	movl	%ebx, %edi	# spilt off for seg:off pair
+	shrl	$4, %edi
+	andl	$0xf, %ebx	# atomic read for up to 64k
 
 	call	_C_LABEL(prot_to_real)	# enter real mode
 
-	# Restore %es
 	movl	%di, %es
-
-	# Restore %ax
 	movl	%si, %ax
-
 	int	$0x13
-	setc	%bl
-
+	movb	$0, %cl
+	jnc	1f
+	movb	%ah, %cl
+1:
 	data32
 	call	_C_LABEL(real_to_prot) # back to protected mode
 
-	movzbl	%bl, %eax	# return value in %ax
+	movzbl	%cl, %eax	# return value in %ax
+	movl	%eax, 1f
 
-	pop		%es
-	popl	%edi
-	popl	%esi
-	popl	%ebx
+	popal
+	movl	1f, %eax
 	popl	%ebp
 	ret
+1:	.long	0
 
 ENTRY(bioswrite)
 
@@ -142,8 +125,8 @@ ENTRY(biosdinfo)
 	pushl	%ebp
 	movl	%esp, %ebp
 	pushl	%ebx
-	pushl	%esi
-	pushl	%edi
+	pushl	%ecx
+	pushl	%edx
 
 	movb	8(%ebp), %dl		# diskinfo(drive #)
 
@@ -179,8 +162,8 @@ ok:
 	andb	$0x3f, %cl		# mask of cylinder gunk
 	movb	%cl, %al		# max sector (and # sectors)
 
-	popl	%edi
-	popl	%esi
+	popl	%edx
+	popl	%ecx
 	popl	%ebx
 	popl	%ebp
 	ret
diff --git a/sys/arch/i386/stand/libsa/bioskbd.S b/sys/arch/i386/stand/libsa/bioskbd.S
index ff414bf30f2..83b5d283573 100644
--- a/sys/arch/i386/stand/libsa/bioskbd.S
+++ b/sys/arch/i386/stand/libsa/bioskbd.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bioskbd.S,v 1.2 1997/03/31 03:12:11 weingart Exp $	*/
+/*	$OpenBSD: bioskbd.S,v 1.3 1997/03/31 23:06:28 mickey Exp $	*/
 
 /*
  * Ported to boot 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
@@ -61,7 +61,75 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  *
  */
 ENTRY(kbd_probe)
-	
+#if 0
+#include <machine/console.h>
+#include <machine/cpufunc.h>
+#include "boot.h"
+
+int
+probe_keyboard(void)
+{
+	int i, retries = 5;
+	unsigned char val;
+
+	/* flush any noise in the buffer */
+	while (inb(KB_STAT) & KB_BUF_FULL) {
+		delay1ms();
+		(void) inb(KB_DATA);
+	}
+
+	/* Try to reset keyboard hardware */
+  again:
+	while (--retries) {
+#ifdef DEBUG
+		printf("%d ", retries);
+#endif
+		while ((inb(KB_STAT) & KB_READY) == KB_READY) delay1ms();
+		outb(KB_DATA, KB_RESET);
+		for (i=0; i<1000; i++) {
+			delay1ms();
+			val = inb(KB_DATA);
+			if (val == KB_ACK || val == KB_ECHO)
+				goto gotack;
+			if (val == KB_RESEND)
+				break;
+		}
+	}
+gotres:
+#ifdef DEBUG
+	printf("gotres\n");
+#endif
+	if (!retries) {
+#ifdef DEBUG
+		printf("gave up\n");
+#endif
+		return(1);
+	}
+gotack:
+	delay1ms();
+	while ((inb(KB_STAT) & KB_BUF_FULL) == 0) delay1ms();
+	delay1ms();
+#ifdef DEBUG
+	printf("ACK ");
+#endif
+	val = inb(KB_DATA);
+	if (val == KB_ACK)
+		goto gotack;
+	if (val == KB_RESEND)
+		goto again;
+	if (val != KB_RESET_DONE) {
+#ifdef DEBUG
+		printf("stray val %d\n", val);
+#endif
+		return(0);
+	}
+#ifdef DEBUG
+	printf("ok\n");
+#endif
+	return(0);
+}
+
+#endif
 	movl	1, %eax		/* present (: */
 	ret
 
@@ -75,9 +143,7 @@ ENTRY(kbd_probe)
 ENTRY(kbd_putc)
 	pushl	%ebp
 	movl	%esp, %ebp
-	pushl	%ebx
-	pushl	%esi
-	pushl	%edi
+	pushal
 
 	movb	8(%ebp), %cl
 
@@ -86,16 +152,14 @@ ENTRY(kbd_putc)
 	movb	%cl, %al
 
 	movb	$0x0e, %ah
-	xorl	%ebx, %ebx
-	incl	%ebx
+	xorl	%bx, %bx
+	incl	%bx
 	int	$0x10		# display a byte
 
 	data32
 	call	_C_LABEL(real_to_prot)
 
-	popl	%edi
-	popl	%esi
-	popl	%ebx
+	popal
 	popl	%ebp
 	ret
 
@@ -144,11 +208,7 @@ ENTRY(kbd_getc)
 #			ZF  = set
 */
 ENTRY(kbd_ischar)
-	pushl	%ebp
-	movl	%esp, %ebp
-	pushl	%ebx
-	pushl	%esi
-	pushl	%edi
+	pushal
 
 	call	_C_LABEL(prot_to_real)
 
@@ -162,9 +222,10 @@ ENTRY(kbd_ischar)
 	call	_C_LABEL(real_to_prot)
 
 	movzbl	%bl, %eax
+	movl	%eax, 1f
 
-	popl	%edi
-	popl	%esi
-	popl	%ebx
-	popl	%ebp
+	popal
+	movl	1f, %eax
 	ret
+1:	.long	0
+
diff --git a/sys/arch/i386/stand/libsa/dev_i386.c b/sys/arch/i386/stand/libsa/dev_i386.c
index c573295390f..0e1b75eb2ce 100644
--- a/sys/arch/i386/stand/libsa/dev_i386.c
+++ b/sys/arch/i386/stand/libsa/dev_i386.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dev_i386.c,v 1.2 1997/03/31 03:12:12 weingart Exp $	*/
+/*	$OpenBSD: dev_i386.c,v 1.3 1997/03/31 23:06:28 mickey Exp $	*/
 
 /*
  * Copyright (c) 1996 Michael Shalayeff
@@ -35,20 +35,25 @@
 #include <libsa.h>
 #include "biosdev.h"
 
+const char bdevs[19][4] = {
+	"wd", "", "fd", "wt", "sd", "st", "cd", "mcd",
+	"", "", "", "", "", "", "", "scd", "", "", "acd"
+};
+
 /* pass dev_t to the open routines */
 int
 devopen(struct open_file *f, const char *fname, char **file)
 {
 	struct devsw *dp = devsw;
-	register int i, rc = 0;
+	register int i, rc = 1;
 
 	*file = (char *)fname;
 
-	for (i = 0; i < ndevs ; dp++, i++)
-		if ((rc = (*dp->dv_open)(f, file))== 0) {
+	for (i = 0; i < ndevs && rc != 0; dp++, i++)
+		if ((rc = (*dp->dv_open)(f, file)) == 0) {
 			f->f_dev = dp;
 			return 0;
-		}
+	}
 
 	if ((f->f_flags & F_NODEV) == 0)
 		f->f_dev = dp;
@@ -60,9 +65,24 @@ void
 putchar(c)
 	int	c;
 {
-	putc(c);
-	if (c == '\n')
+	static int pos = 0;
+
+	switch(c) {
+	case '\t':
+		while(++pos % 8)
+			putc(' ');
+		break;
+	case '\n':
 		putc('\r');
+	case '\r':
+		putc(c);
+		pos=0;
+		break;
+	default:
+		putc(c);
+		pos++;
+		break;
+	}
 }
 
 int
@@ -80,3 +100,4 @@ getchar()
 
 	return(c);
 }
+
diff --git a/sys/arch/i386/stand/libsa/exec_i386.c b/sys/arch/i386/stand/libsa/exec_i386.c
deleted file mode 100644
index f9eb127a3b9..00000000000
--- a/sys/arch/i386/stand/libsa/exec_i386.c
+++ /dev/null
@@ -1,76 +0,0 @@
-
-/* $OpenBSD: exec_i386.c,v 1.2 1997/03/31 05:52:25 weingart Exp $ */
-
-#include <sys/param.h>
-#include <sys/exec.h>
-#include <sys/reboot.h>
-#include <libsa.h>
-
-
-void
-machdep_start(startaddr, howto, loadaddr, ssym, esym)
-	char *startaddr, *loadaddr, *ssym, *esym;
-	int howto;
-{
-	static int argv[9];
-	struct exec *x;
-
-
-#ifdef DEBUG
-	x = (void *)loadaddr;
-	printf("exec {\n");
-	printf("  a_midmag = %lx\n", x->a_midmag);
-	printf("  a_text = %lx\n", x->a_text);
-	printf("  a_data = %lx\n", x->a_data);
-	printf("  a_bss = %lx\n", x->a_bss);
-	printf("  a_syms = %lx\n", x->a_syms);
-	printf("  a_entry = %lx\n", x->a_entry);
-	printf("  a_trsize = %lx\n", x->a_trsize);
-	printf("  a_drsize = %lx\n", x->a_drsize);
-	printf("}\n");
-
-	getchar();
-#endif
-
-	(int)startaddr &= 0xffffff;
-
-	/*
-	 *  We now pass the various bootstrap parameters to the loaded
-	 *  image via the argument list
-	 *
-	 *  arg0 = 8 (magic)
-	 *  arg1 = boot flags
-	 *  arg2 = boot device
-	 *  arg3 = Cylinder offset (XXX - used to be ssym)
-	 *  arg4 = end of symbol table (0 if not loaded)
-	 *  arg5 = transfer address from image
-	 *  arg6 = transfer address for next image pointer
-	 *  arg7 = conventional memory size (640)
-	 *  arg8 = extended memory size (8196)
-	 */
-	argv[0] = 8;
-	argv[1] = howto;
-	argv[2] = bootdev;		/* Boot device */
-	argv[3] = 0;			/* Cyl offset */
-	argv[4] = 0;
-	argv[5] = (int)startaddr;
-	argv[6] = 0;
-	argv[7] = memsize(0);
-	argv[8] = memsize(1);
-
-#ifdef DEBUG
-	{ int i;
-		for(i = 0; i <= argv[0]; i++)
-			printf("argv[%d] = %x\n", i, argv[i]);
-
-		getchar();
-	}
-#endif
-
-	/****************************************************************/
-	/* copy that first page and overwrite any BIOS variables        */
-	/****************************************************************/
-	printf("entry point at 0x%x\n", (int)startaddr);
-	startprog(startaddr, argv);
-}
-
diff --git a/sys/arch/i386/stand/libsa/libsa.h b/sys/arch/i386/stand/libsa/libsa.h
index b5eb8ddea58..28ea3117349 100644
--- a/sys/arch/i386/stand/libsa/libsa.h
+++ b/sys/arch/i386/stand/libsa/libsa.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: libsa.h,v 1.2 1997/03/31 03:12:14 weingart Exp $	*/
+/*	$OpenBSD: libsa.h,v 1.3 1997/03/31 23:06:29 mickey Exp $	*/
 
 /*
  * Copyright (c) 1996 Michael Shalayeff
@@ -34,12 +34,10 @@
 
 #include <stand.h>
 
-void startprog __P((char *addr, int argv[]));
-void gateA20 __P((int on));
-int memsize __P((int which));
-int memprobe __P((void));
+void gateA20 __P((int));
+void memprobe __P((void));
 
-extern dev_t	bootdev, maj, unit, part;
-extern u_long	cyloffset;
-extern u_long	ourseg, esym;
+extern u_long	codeseg;
 extern int	boothowto;
+extern u_int	cnvmem, extmem;
+extern const char bdevs[19][4];
diff --git a/sys/arch/i386/stand/libsa/memprobe.c b/sys/arch/i386/stand/libsa/memprobe.c
index 1a67eafb84d..a50cac42932 100644
--- a/sys/arch/i386/stand/libsa/memprobe.c
+++ b/sys/arch/i386/stand/libsa/memprobe.c
@@ -1,8 +1,33 @@
-/* $OpenBSD: memprobe.c,v 1.1 1997/03/31 03:12:14 weingart Exp $ */
+/*	$OpenBSD: memprobe.c,v 1.2 1997/03/31 23:06:30 mickey Exp $	*/
 
 #include <sys/param.h>
-#include <libsa.h>
+#include "libsa.h"
+#include "biosdev.h"
 
+static int addrprobe __P((int));
+
+void
+memprobe()
+{
+	int ram;
+
+	cnvmem = biosmem(0);
+	extmem = biosmem(1);
+
+	/* probe extended memory
+	 *
+	 * There is no need to do this in assembly language.  This are
+	 * much easier to debug in C anyways.
+	 */
+	for(ram = 1024; ram < 512*1024; ram += 4){
+
+		printf("Probing memory: %d KB\r", ram-1024);
+		if(addrprobe(ram)) break;
+	}
+
+	printf("\n");
+	extmem = ram - 1024;
+}
 
 /* addrprobe(kloc): Probe memory at address kloc * 1024.
  *
@@ -30,21 +55,3 @@ static int addrprobe(int kloc){
 }
 
 
-/* memprobe():  return probed memory size in KB for extended memory
- *
- * There is no need to do this in assembly language.  This are
- * much easier to debug in C anyways.
- */
-int memprobe(void){
-	int ram;
-
-	for(ram = 1024; ram < 512*1024; ram += 4){
-
-		printf("Probing memory: %d KB\r", ram-1024);
-		if(addrprobe(ram)) break;
-	}
-
-	printf("\n");
-	return(ram-1024);
-}
-
diff --git a/sys/arch/i386/stand/libsa/memsize.S b/sys/arch/i386/stand/libsa/memsize.S
deleted file mode 100644
index 2887d10449b..00000000000
--- a/sys/arch/i386/stand/libsa/memsize.S
+++ /dev/null
@@ -1,98 +0,0 @@
-/*	$OpenBSD: memsize.S,v 1.2 1997/03/31 03:12:15 weingart Exp $	*/
-
-/*
- * Ported to boot 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
- *
- * Mach Operating System
- * Copyright (c) 1992, 1991 Carnegie Mellon University
- * All Rights Reserved.
- * 
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- * 
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- * 
- * Carnegie Mellon requests users of this software to return to
- * 
- *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
- *  School of Computer Science
- *  Carnegie Mellon University
- *  Pittsburgh PA 15213-3890
- * 
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-
-/*
-  Copyright 1988, 1989, 1990, 1991, 1992 
-   by Intel Corporation, Santa Clara, California.
-
-                All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby
-granted, provided that the above copyright notice appears in all
-copies and that both the copyright notice and this permission notice
-appear in supporting documentation, and that the name of Intel
-not be used in advertising or publicity pertaining to distribution
-of the software without specific, written prior permission.
-
-INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#include <machine/asm.h>
-#define	addr32	.byte 0x67
-#define	data32	.byte 0x66
-
-/*
-#
-# memsize(i) :  return the memory size in KB. i == 0 for conventional memory,
-#		i == 1 for extended memory
-#	BIOS call "INT 12H" to get conventional memory size
-#	BIOS call "INT 15H, AH=88H" to get extended memory size
-#		Both have the return value in AX.
-#
-*/
-
-ENTRY(memsize)
-	pushl	%ebp
-	movl	%esp, %ebp
-	pushl	%esi
-	pushl	%edi
-
-	movl	8(%ebp), %edx
-
-	call	_C_LABEL(prot_to_real)	# enter real mode
-
-	testb	%dl, %dl
-	jnz	1f
-	
-	int	$0x12
-	jmp	2f
-
-1:
-	movb	$0x88, %ah
-	int	$0x15
-
-2:
-	movl	%eax, %edx
-
-	data32
-	call	_C_LABEL(real_to_prot)
-
-	movl	%edx, %eax
-	popl	%edi
-	popl	%esi
-	popl	%ebp
-	ret
diff --git a/sys/arch/i386/stand/libsa/probe_keyboard.c b/sys/arch/i386/stand/libsa/probe_keyboard.c
deleted file mode 100644
index e680c248e91..00000000000
--- a/sys/arch/i386/stand/libsa/probe_keyboard.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/*-
- * Copyright (c) 1992-1995 Søren Schmidt
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * William Jolitz and Don Ahn.
- *
- * 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
- *    in this position and unchanged.
- * 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 the University of
- *	California, Berkeley and its contributors.
- * 4. 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.
- *
- * This is a modified version of the keyboard reset code used in syscons.
- * If the keyboard reset fails, we assume that the keyboard has been
- * unplugged and we use a serial port (COM1) as the console instead.
- * Returns 1 on failure (no keyboard), 0 on success (keyboard attached).
- *
- * This grody hack brought to you by Bill Paul (wpaul@ctr.columbia.edu)
- *
- *	$Id: probe_keyboard.c,v 1.2 1997/03/31 03:12:15 weingart Exp $
- */
-
-#ifdef PROBE_KEYBOARD
-
-#include <machine/console.h>
-#include <machine/cpufunc.h>
-#include "boot.h"
-
-int
-probe_keyboard(void)
-{
-	int i, retries = 5;
-	unsigned char val;
-
-	/* flush any noise in the buffer */
-	while (inb(KB_STAT) & KB_BUF_FULL) {
-		delay1ms();
-		(void) inb(KB_DATA);
-	}
-
-	/* Try to reset keyboard hardware */
-  again:
-	while (--retries) {
-#ifdef DEBUG
-		printf("%d ", retries);
-#endif
-		while ((inb(KB_STAT) & KB_READY) == KB_READY) delay1ms();
-		outb(KB_DATA, KB_RESET);
-		for (i=0; i<1000; i++) {
-			delay1ms();
-			val = inb(KB_DATA);
-			if (val == KB_ACK || val == KB_ECHO)
-				goto gotack;
-			if (val == KB_RESEND)
-				break;
-		}
-	}
-gotres:
-#ifdef DEBUG
-	printf("gotres\n");
-#endif
-	if (!retries) {
-#ifdef DEBUG
-		printf("gave up\n");
-#endif
-		return(1);
-	}
-gotack:
-	delay1ms();
-	while ((inb(KB_STAT) & KB_BUF_FULL) == 0) delay1ms();
-	delay1ms();
-#ifdef DEBUG
-	printf("ACK ");
-#endif
-	val = inb(KB_DATA);
-	if (val == KB_ACK)
-		goto gotack;
-	if (val == KB_RESEND)
-		goto again;
-	if (val != KB_RESET_DONE) {
-#ifdef DEBUG
-		printf("stray val %d\n", val);
-#endif
-		return(0);
-	}
-#ifdef DEBUG
-	printf("ok\n");
-#endif
-	return(0);
-}
-
-#endif /* PROBE_KEYBOARD */
diff --git a/sys/arch/i386/stand/libsa/real_prot.S b/sys/arch/i386/stand/libsa/real_prot.S
index 765c318cc76..ff7b4beaa6d 100644
--- a/sys/arch/i386/stand/libsa/real_prot.S
+++ b/sys/arch/i386/stand/libsa/real_prot.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: real_prot.S,v 1.2 1997/03/31 03:12:16 weingart Exp $	*/
+/*	$OpenBSD: real_prot.S,v 1.3 1997/03/31 23:06:31 mickey Exp $	*/
 
 /*
  * Mach Operating System
@@ -26,7 +26,6 @@
  * the rights to redistribute these changes.
  *
  *	from: Mach, Revision 2.2  92/04/04  11:34:13  rpd
- *	$Id: real_prot.S,v 1.2 1997/03/31 03:12:16 weingart Exp $
  */
 
 
@@ -77,9 +76,8 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  * 	transfer from real mode to protected mode.
  */
 
-.align 4,0x90
 ENTRY(real_to_prot)
-	/* guarantee that interrupt is disabled when in prot mode */
+	/* guarantee that interrupts are disabled when in prot mode */
 	cli
 
 	/* load the gdtr */
@@ -108,6 +106,8 @@ ENTRY(real_to_prot)
 	movl	%ax, %ds
 	movl	%ax, %ss
 	movl	%ax, %es
+	movl	%ax, %fs
+	movl	%ax, %gs
 
 #ifndef NO_IDTR
 	/* load idtr so we can debug */
@@ -122,44 +122,33 @@ ENTRY(real_to_prot)
  * 
  */
 
-.align 4,0x90
 ENTRY(prot_to_real)
 
-	/*
-	 * This is self-modifying code, but we need a writable
-	 * code segment, and an intersegment return does not give us that.
-	 */
-	movw 	_codeseg, %ax
-	pushw	%ax
-	movw	$2f, %ax
-	pushw	%ax
+	movl 	_codeseg, %eax
+	# movw	%ax, 2f
 
 	/* Change to use16 mode. */
 	ljmp	$0x18, $1f
-
-1:	/* clear the PE bit of CR0 */
+1:
+	/* clear the PE bit of CR0 */
 	movl	%cr0, %eax
 	data32
 	andl 	$~CR0_PE, %eax
 	movl	%eax, %cr0
 
-	/*
-	 * make intersegment jmp to flush the processor pipeline
-	 * using the fake stack frame set up earlier
-	 * and reload CS register
-	 */
-#if 0
-	hlt
-#endif
-	lret
-2:	/*
-	 * we are in real mode now
-	 * set up the real mode segment registers : DS, SS, ES
-	 */
+	data32
+	# ljmp	_codeseg, $2f
+	.byte	0xea
+	.long	3f
+2:	.word	0
+3:	
+	/* setup: %ds, %es, %ss */
 	movl	%cs, %ax
 	movl	%ax, %ds
 	movl	%ax, %ss
 	movl	%ax, %es
+	movl	%ax, %fs
+	movl	%ax, %gs
 #ifndef	NO_IDTR
 	/* load idtr so we can debug */
 	addr32
diff --git a/sys/arch/i386/stand/libsa/srt0.S b/sys/arch/i386/stand/libsa/srt0.S
deleted file mode 100644
index e0c94c975eb..00000000000
--- a/sys/arch/i386/stand/libsa/srt0.S
+++ /dev/null
@@ -1,139 +0,0 @@
-/*	$OpenBSD: srt0.S,v 1.2 1997/03/31 03:12:16 weingart Exp $	*/
-/*	$NetBSD: srt0.c,v 1.3 1994/10/27 04:21:59 cgd Exp $	*/
-
-/*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * William Jolitz.
- *
- * 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 the University of
- *	California, Berkeley and its contributors.
- * 4. 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.
- *
- *	@(#)srt0.c	5.3 (Berkeley) 4/28/91
- */
-
-/*
- * Startup code for standalone system
- * Non-relocating version -- for programs which are loaded by boot
- * Relocating version for boot
- * Small relocating version for "micro" boot
- */
-
-#include <machine/psl.h>
-
-	.globl	_end
-	.globl	_edata
-	.globl	_boot
-	.globl	__rtt
-	.globl	_bootdev
-	.globl	_boothowto
-	.globl	_cyloffset
-
-	.data
-	.globl	_Gdtr
-_Gdtr:
-	.long	0
-	.word	0
-_bootdev:	.long	0
-_boothowto:	.long	0
-_cyloffset:	.long	0
-_esym:		.long	0
-
-	.text
-
-#define	NOP	inb $0x84,%al ; inb $0x84,%al
-
-	.globl	start_boot
-
-start_boot:
-	pushl	%ebp
-	movl	%esp, %ebp
-
-	/* First, reset the PSL. */
-	pushl	$PSL_MBO
-	popfl
-
-	movl    8(%ebp), %eax
-	movl	%eax, _boothowto
-	movl    12(%ebp),%eax
-	movl    %eax, _bootdev
-	movl    16(%ebp),%eax
-	movl    %eax, _cyloffset
-	movl    20(%ebp),%eax
-	movl    %eax, _esym
-
-	/* save old stack state */
-	movl	%esp,savearea
-	movl	%ebp,savearea+4
-
-#if 0
-	/* setup stack pointer */
-	movl	_end, %eax
-	addl	$10000, %eax
-	movl	%eax, %esp
-
-	/* clear memory as needed */
-	movl	%esp,%esi
-	movl	$_edata,%edx
-
-	movl	%esp,%eax
-	subl	%edx,%eax
-	pushl	%edx
-	pushl	0
-	pushl	%esp
-	call	_memset
-
-	#call	_kbdreset	/* resets keyboard and gatea20 brain damage */
-	movl	%esi,%esp
-#endif
-	call	_boot
-	jmp	__rtt
-
-	.data
-
-savearea:	.long	0,0	# sp & bp to return to
-
-	.text
-
-__rtt:
-	movl	$-7,%eax
-#ifdef	REL
-#ifndef SMALL
-	call	_reset_cpu
-#endif
-	movw	$0x1234,%ax
-	movw	%ax,0x472	# warm boot
-	movl	$0,%esp		# segment violation
-	ret
-#else
-	movl	savearea,%esp
-	movl	savearea+4,%ebp
-	ret
-#endif
diff --git a/sys/arch/i386/stand/libsa/startprog.S b/sys/arch/i386/stand/libsa/startprog.S
deleted file mode 100644
index 465c8f888a5..00000000000
--- a/sys/arch/i386/stand/libsa/startprog.S
+++ /dev/null
@@ -1,45 +0,0 @@
-/*	$OpenBSD: startprog.S,v 1.2 1997/03/31 05:52:25 weingart Exp $	*/
-
-#include <machine/asm.h>
-
-
-/*
- * startprog(phyaddr, argv)
- *	start the program on protected mode where phyaddr is the entry point
- */
-ENTRY(startprog)
-	pushl	%ebp
-	movl	%esp, %ebp
-
-	# get things we need into registers
-	movl	8(%ebp), %ecx		# entry offset 
-	movl	12(%ebp), %eax		# &argv
-
-	# make a new stack at 0:0x90000 (big segs)
-	movl	$0x10, %ebx
-	movw	%bx, %ss
-	movl	$0x90000, %ebx
-	movl	%ebx, %esp
-
-	# push some number of args onto the stack
-	pushl	28(%eax)		# argv[7] = cnvmem
-	pushl	32(%eax)		# argv[8] = extmem
-	pushl	16(%eax)		# argv[4] = esym
-	pushl	12(%eax)		# argv[3] = cyl offset
-	pushl	8(%eax)			# argv[2] = bootdev
-	pushl	4(%eax)			# argv[1] = howto
-	pushl	$0			# dummy 'return' address
-
-	# push on our entry address
-	movl	$0x8, %ebx		# segment
-	pushl	%bx
-	pushl	%ecx
-
-	# convert over the other data segs
-	movl	$0x10, %ebx
-	movl	%bx, %ds
-	movl	%bx, %es
-
-	# convert the PC (and code seg)
-	lret
-