--- /dev/null
+# $OpenBSD: Makefile,v 1.6 1997/03/31 03:11:58 weingart Exp $
+
+SUBDIR= libsa libz biosboot installboot boot mbr
+
+.include <bsd.subdir.mk>
--- /dev/null
+
+CPPFLAGS+=-D_STANDALONE -DSAVE_MEMORY
+CPPFLAGS+=-DDEBUG
+# -DALLOC_TRACE
+# -D_TEST
+# -DUNIX_DEBUG
+# -DBOOTP_DEBUG -DNETIF_DEBUG -DETHER_DEBUG
+# -DNFS_DEBUG -DRPC_DEBUG -DRARP_DEBUG
+REL=0x1000
+
+NO_NET=no_net
+SA_ZLIB=sa_zlib
+BINDIR= /usr/mdec
+
--- /dev/null
+$OpenBSD: README,v 1.1 1997/03/31 03:11:59 weingart Exp $
+
+
+Ok, just a couple quick pointers to people hacking on this stuff. These
+are things that I have found out, and hopefully will make things easier
+for the next dude.
+
+First of all, don't trust gas to get the opcodes right. Look at the
+listing (-Wa,a), and check them. In particular, check for EIP relative
+and absolute addressing. Some of this stuff is pretty hairy in that way.
+
+Debugging this stuff is hell. Remember that stores directly to video
+memory will go a long way towards tracking how far things are getting,
+especially when you don't have the BIOS handy. (movl %0x07410741, 0xb8000)
+
+
+The basics of the /boot system is the following:
+
+biosboot: 512 bytes of the first sector on the disk/partition. This loads
+/boot (or whatever you did with installboot) into ram.
+
+boot: relocates itself, and starts protected mode. There is some magic here
+in terms of the placement and size of the various segments, as this piece of
+code has to switch between real and protected mode many times to load the
+next piece of the puzzle, /bsd.gz.
+
+bsd: The kernel itself, can be gzipped if ya want.
+
+
+The basic steps at creating a boot floppy for yourself, and checking things
+out are the following:
+
+1.) Compile a kernel you wish to use.
+2.) Compile the new stand stuff.
+3.) Mount floppy.
+4.) Copy boot and kernel to floppy. (Kernel could be gzipped if needed)
+5.) Run installboot on floppy.
+6.) Unmount floppy.
+7.) Test...
+
+A quick pasto for ya:
+> natasha# mount /dev/fd0a /mnt
+> natasha# cp boot/obj/boot /mnt
+> natasha# gzip -9c bsd > /mnt/bsd.gz
+> natasha# installboot -v /mnt/boot biosboot /dev/rfd0a
+> boot: /mnt/boot
+> proto: biosboot/obj/biosboot
+> device: /dev/rfd0a
+>
+> biosboot/obj/biosboot: entry point 0
+> proto bootblock size 512
+> room for 32 filesystem blocks at 0x138
+> Will load 9 blocks of size 4096 each.
+> 0: 4 @(2 1 15) (104-107)
+> 1: 18 @(3 0 1) (108-125)
+> 2: 18 @(3 1 1) (126-143)
+> 3: 18 @(4 0 1) (144-161)
+> 4: 14 @(4 1 1) (162-175)
+> /mnt/boot: 5 entries total
+> natasha# umount /mnt
+> natasha#
+
--- /dev/null
+# $OpenBSD: Makefile,v 1.2 1997/03/31 03:12:00 weingart Exp $
+
+PROG= biosboot
+SRCS= biosboot.S
+AFLAGS+=-DREL=$(REL) #-Wa,-a
+LDFLAGS=-Wl,-T0,-N,-x -nostdlib
+STRIP=
+MAN= biosboot.8
+LINKS= ${BINDIR}/biosboot ${BINDIR}/fdboot \
+ ${BINDIR}/biosboot ${BINDIR}/wdboot \
+ ${BINDIR}/biosboot ${BINDIR}/sdboot \
+
+# XXX - Toby
+# These should not output anything, once /boot is loaded, let
+# it figure out who to talk to (probe the keyboard). That way
+# we will not need two different types of bootblocks...
+#
+# Uncomment this to make the boot block talk to a serial port.
+# CPPFLAGS+=-DSERIAL=0
+
+.include <bsd.prog.mk>
--- /dev/null
+.\" $OpenBSD: biosboot.8,v 1.2 1997/03/31 03:12:00 weingart Exp $
+.\" $NetBSD: boot_i386.8,v 1.3 1995/04/23 10:33:35 cgd Exp $
+.\"
+.\" Copyright (c) 1991, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" This code is derived from software written and 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.
+.\"
+.\" @(#)boot_i386.8 8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt BOOT 8 i386
+.Os
+.Sh NAME
+.Nm boot
+.Nd
+system bootstrapping procedures
+.Sh DESCRIPTION
+.Sy Power fail and crash recovery.
+Normally, the system will reboot itself at power-up or after crashes.
+An automatic consistency check of the file systems will be performed,
+and unless this fails, the system will resume multi-user operations.
+.Pp
+.Sy Cold starts.
+The 386
+.Tn "PC AT"
+clones attempt to boot the floppy disk drive A (otherwise known as drive
+0) first, and failing that, attempt to boot the hard disk C (otherwise
+known as hard disk controller 1, drive 0).
+The automatic boot will attempt to load
+.Pa bsd
+from partition A of either the floppy or the hard disk.
+This boot may be aborted by typing any character on the keyboard repeatedly
+(four or five times at least) during the operating system load phase, after
+which the bootstrap will prompt for the file that you wish to load instead.
+.Pp
+One exception to this is the
+.Ql d
+key, which will not abort the load but instead silently force the
+.Dv DEBUG
+boot flags.
+The boot flags for an autoboot are 0, and 3 for the successive boot after
+an aborted autoboot sequence.
+No other provison is made for setting boot flags (yet).
+A specific device or bootstrap file may be used; for example,
+.Pp
+The file specifications used for the boostrap
+when loaded with the
+.Dq askme
+flag
+(e.g. an aborted autoboot)
+are of the form:
+.Pp
+.Dl device unit partition:
+.Pp
+where
+.Ar device
+is the type of the device, assumed to be on the ISA bus, to be searched,
+.Ar unit
+is the unit number of the disk or tape,
+and
+.Ar partition
+is the disk partition or tape file number.
+Normal line editing characters can be used when typing the file specification.
+The following list of supported devices may vary from installation to
+installation:
+.Bd -unfilled -offset indent
+wd ST506, IDE, ESDI, RLL disks on a WD100[2367] or lookalike
+ controller
+fd 5 1/4" or 3 1/2" High density floppies
+.Ed
+.Pp
+For example,
+to boot from a file system which starts at cylinder 0
+of unit 0 of an IDE disk, type
+.Dq Li wd(0,a)/bsd
+to the boot prompt;
+.Dq Li fd(0,a)/bsd
+would specify a 3 1/2" floppy drive 0 .
+.Pp
+In an emergency, the bootstrap methods described in the paper
+.%T "Installing and Operating 4.3 BSD-Reno UNIX on the AT/386"
+can be used
+to boot from a distribution tape.
+.Sh FILES
+.Bl -tag -width /bsdxx -compact
+.It Pa /boot
+system bootstrap
+.It Pa /bsd
+system code
+.El
+.Sh SEE ALSO
+.Xr boot 8 ,
+.Xr halt 8 ,
+.Xr reboot 8 ,
+.Xr shutdown 8
+.Sh BUGS
+The disklabel format used by this version of
+.Bx
+is quite
+different from that of other architectures.
--- /dev/null
+/* $OpenBSD: biosboot.S,v 1.2 1997/03/31 03:12:01 weingart Exp $ */
+
+ .file "bootbios.S"
+
+#include <machine/asm.h>
+#include <machine/specialreg.h>
+#define _LOCORE
+#include <machine/segments.h>
+#undef _LOCORE
+
+#define addr32 .byte 0x67
+#define data32 .byte 0x66
+
+#ifdef DEBUG
+#define BLKCNT 32
+#else
+#define BLKCNT 48
+#endif
+
+#define BIOSSEG 0x07c0 /* boot loaded here */
+#define BOOTSEG 0x1000 /* /boot placement */
+#define BOOTSTACK 0xfffc /* /boot stack */
+#define ZMAGIC 0x0b01 /* ZMAGIC */
+
+#ifdef DEBUG
+#define DBGMSG(msg) \
+ movb $msg, %al; \
+ data32; \
+ call chr
+#define CHAR_M 'M' /* magic check */
+#define CHAR_P 'P' /* switch to protected mode */
+#else /* !DEBUG */
+#define DBGMSG(msg)
+#endif /* !DEBUG */
+
+ .text
+
+ .globl start
+start:
+ /* adjust %cs */
+ data32
+ ljmp $BIOSSEG, $2f
+1: .asciz "loading /boot"
+
+2: /* set up stack (%ss:%esp) */
+ cli /* disable interrupts w/o stack */
+ data32
+ movl $BOOTSEG, %ax
+ movl %ax, %ss
+ data32
+ movl $BOOTSTACK, %esp
+ sti /* we have stack, do ints */
+
+ /* set up %es, (where we will load /boot to) */
+ movl %ax, %es
+
+ /* set up %ds */
+ pushl %cs
+ popl %ds
+
+#ifdef SERIAL
+ # Initialize the serial port to 9600 baud, 8N1.
+ pushl %dx
+ movl $0x00e3, %ax
+ data32
+ movl SERIAL, %edx
+ int $0x14
+ popl %dx
+#endif
+
+ data32
+ movl $1b, %esi
+ data32
+ call message
+
+ data32
+ xorl %ebx, %ebx /* put it at %es:0 */
+ addr32
+ movb _block_count, %cl /* how many to read */
+ movzbl %cl, %ecx
+ data32
+ movl $_block_table, %esi
+
+1:
+ pushl %ecx
+ cld
+ lodsl /* word */ /* cylinder/sector */
+ movl %ax, %cx
+ lodsb /* head */
+ movb %al, %dh
+ lodsb /* # of sectors to load */
+ movb $0x2, %ah
+ pushl %ax
+ int $0x13
+ jnc 3f
+
+ /* read error */
+ data32
+ movl $2f, %esi
+ jmp halt
+2: .asciz "\r\nRead error\r\n"
+
+3: /* read next block */
+ movb $'.', %al
+ data32
+ call chr /* show progress indicator */
+
+ popl %ax
+ data32
+ movzbl %al, %eax
+ shll $9, %ax /* 512 bytes sectors */
+ addl %ax, %bx
+ popl %ecx
+ loop 1b
+
+ data32
+ movl $2f, %esi /* new line */
+ data32
+ call message
+
+#if 0
+ DBGMSG(CHAR_M)
+#endif
+
+ xorl %esi, %esi
+ cld
+ /* check /boot magic */
+ es;lodsl;es;lodsl /* no need for high word */
+ # cmpw $ZMAGIC, %ax
+ .byte 0x3d
+ .word ZMAGIC
+ je 3f
+
+ data32
+ movl $1f, %esi
+halt:
+ data32
+ call message
+ cli
+ hlt
+1: .ascii "Bad magic"
+2: .asciz "\r\n"
+3:
+#if notdef
+ data32;es;lodsl /* text size */
+ data32;es;lodsl /* data size */
+ data32;es;lodsl /* bss size */
+ data32;es;lodsl /* syms size */
+#endif
+#if 0
+ data32;addr32
+ addl 16(%esi), %edi /* entry */
+ data32
+ subl $REL, %edi
+#endif
+
+#if 0
+ DBGMSG(CHAR_P)
+#endif
+
+ /* change to protected mode */
+ /* guarantee that interrupts are disabled when in prot mode */
+ cli
+
+ /* load the gdtr */
+ addr32
+ data32
+ lgdt Gdtr
+
+ /* set the PE bit of CR0 */
+ movl %cr0, %eax
+ data32
+ orl $CR0_PE, %eax
+ movl %eax, %cr0
+
+ /*
+ * make intrasegment jump to flush the processor pipeline and
+ * reload CS register
+ */
+ data32
+ ljmp $8, $1f+(BIOSSEG << 4)
+
+1: /*
+ * 32bit mode
+ * set up %ds, %ss, %es
+ */
+ movl $0x10, %eax
+ movl %ax, %ds
+ movl %ax, %ss
+ movl %ax, %es
+ movl %ax, %fs
+ movl %ax, %gs
+ movl $BOOTSTACK, %esp
+
+#if 0
+#ifdef DEBUG
+ movl $0xb8000, %ebx
+ movl $0x074f0747, (%ebx)
+#endif
+#endif
+
+ movzbl %dl, %eax /* drive number is in the lowest byte */
+ pushl %eax
+
+#if 0
+#ifdef DEBUG
+ movl $0x10000, %ebx
+ movl (%ebx), %ecx
+ /* cmpw $ZMAGIC, %ax */
+ .byte 0x3d
+ .word ZMAGIC
+je 1f
+ movl $0xb8004, %ebx
+ movl $0x07500748, (%ebx)
+ jne 2f
+1:
+ movl $0xb8004, %ebx
+ movl $0x074f0747, (%ebx)
+2:
+#endif
+#endif
+
+ /* jmp /boot */
+ ljmp $0x8, $(REL << 4) + 0x20
+ /* not reached */
+
+#
+# chr: write the character in %al to console
+#
+chr:
+ data32
+ pushl %eax
+
+#ifndef SERIAL
+ data32
+ pushl %ebx
+ movb $0x0e, %ah
+ xorl %bx, %bx
+ incl %bx /* movw $0x01, %bx */
+ int $0x10
+ data32
+ popl %ebx
+#else
+ data32
+ pushl %edx
+ movb $0x01, %ah
+ xorl %dx, %dx
+ movb SERIAL, %dl
+ int $0x14
+ data32
+ popl %edx
+#endif
+ data32
+ popl %eax
+ data32
+ ret
+
+/*
+ * Display string
+ */
+message:
+ data32
+ pushl %eax
+ cld
+1:
+ lodsb # load a byte into %al
+ testb %al, %al
+ jz 1f
+ data32
+ call chr
+ jmp 1b
+1:
+ data32
+ popl %eax
+ data32
+ ret
+
+ .align 2
+Gdtr: .word 3 * 8 - 1
+ .long (BIOSSEG << 4) + 2f
+ .align 3
+2: /* 0x00 : null */
+ .long 0, 0
+ /* 0x08 : flat code */
+ .word 0xFFFF # lolimit
+ .word 0 # lobase
+ .byte 0 # midbase
+ .byte SDT_MEMERAC | 0 | 0x80 # RWXAC, dpl = 0, present
+ .byte 0xf | 0 | 0x40 | 0x80 # hilimit, xx, 32bit, 4k granularity
+ .byte 0 # hibase
+ /* 0x10 : flat data */
+ .word 0xFFFF # lolimit
+ .word 0 # lobase
+ .byte 0 # midbase
+ .byte SDT_MEMRWA | 0 | 0x80 # RWA, dpl = 0, present
+ .byte 0xf | 0 | 0x40 | 0x80 # hilimit, xx, 32bit, 4k granularity
+ .byte 0 # hibase
+
+ .globl _block_table
+_block_table:
+ .word 0 /* cyllinder/sector */
+ .byte 0 /* head */
+ .byte 0 /* nsect */
+ . = _block_table + BLKCNT*4
+ .globl _block_count
+_block_count:
+ .byte BLKCNT /* entries in _block_table */
+
+ . = 0x200 - 4
+ /* a little signature */
+ .ascii "boot"
+
--- /dev/null
+# $OpenBSD: Makefile,v 1.2 1997/03/31 03:12:02 weingart Exp $
+
+PROG= boot
+SRCS= srt0.S boot.c cmd.c conf.c version.c
+CFLAGS=-I${.CURDIR}/../../../../lib/libsa -I${.CURDIR}/../libsa
+AFLAGS+=-DREL=$(REL) #-Wa,-a
+CFLAGS+=-Wall -O
+LDFLAGS=-Wl,-T$(REL),-x,-z -e start_boot
+LDFLAGS+=-static -nostdlib
+MAN= boot.8
+
+LDADD= -L../libsa -lsa -L../libz -lz
+DPADD= ../libsa/libsa.a ../libz/libz.a
+
+.include <bsd.prog.mk>
+
+.ifdef NO_NET
+CPPFLAGS+=-DNO_NET
+.endif
--- /dev/null
+/* $OpenBSD: boot.c,v 1.2 1997/03/31 03:12:03 weingart Exp $ */
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/reboot.h>
+#include <sys/stat.h>
+#include <a.out.h>
+#include <sys/disklabel.h>
+#include <libsa.h>
+#include "cmd.h"
+
+/*
+ * Boot program, loaded by boot block from remaing 7.5K of boot area.
+ * Sifts through disklabel and attempts to load an program image of
+ * a standalone program off the disk. If keyboard is hit during load,
+ * or if an error is encounter, try alternate files.
+ */
+
+char *kernels[] = {
+ "bsd", "bsd.gz",
+ "obsd", "obsd.gz",
+ "bsd.old", "bsd.old.gz",
+ NULL
+};
+
+int retry = 0;
+extern char version[];
+extern dev_t bootdev;
+extern int boothowto;
+int cnvmem, extmem, probemem;
+
+void boot ();
+struct cmd_state cmd;
+
+/*
+ * Boot program... loads /boot out of filesystem indicated by arguements.
+ * We assume an autoboot unless we detect a misconfiguration.
+ */
+void
+boot()
+{
+ register char *bootfile = kernels[0];
+ register int i;
+
+
+ /* Get memory size */
+ cnvmem = memsize(0);
+ extmem = memsize(1);
+ gateA20(1);
+ probemem = memprobe();
+
+
+ /* XXX init cmd here to cut on .data !!! */
+ strncpy(cmd.bootdev,
+#ifdef _TEST
+ "/dev/rfd0a",
+#else
+ "fd(0,a)",
+#endif
+ sizeof(cmd.bootdev));
+ cmd.image[0] = '\0';
+ cmd.cwd[0] = '/';
+ cmd.cwd[1] = '\0';
+ cmd.addr = (void *)0x100000;
+ cmd.timeout = 50000;
+
+ printf("\n>> OpenBSD BOOT: %d/%d (%d) k [%s]\n",
+ cnvmem, extmem, probemem, version);
+
+ for (i = 0;;) {
+
+ strncpy(cmd.image, bootfile, sizeof(cmd.image));
+
+ do {
+ printf("boot> ");
+ } while(!getcmd(&cmd) && !execmd(&cmd));
+
+ sprintf(cmd.path, "%s%s%s", cmd.bootdev, cmd.cwd, bootfile);
+ printf("\nbooting %s: ", cmd.path);
+ exec (cmd.path, cmd.addr, boothowto);
+
+ if(kernels[++i] == NULL)
+ bootfile = kernels[i=0];
+ else
+ bootfile = kernels[i];
+
+ cmd.timeout += 20;
+
+ printf(" failed(%d)\nwill try %s\n", errno, bootfile);
+ }
+}
+
+#ifdef _TEST
+int
+main()
+{
+ boot();
+ return 0;
+}
+#endif
--- /dev/null
+/* $OpenBSD: cmd.c,v 1.1 1997/03/31 03:12:03 weingart Exp $ */
+
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+#include <sys/param.h>
+#include <string.h>
+#include <libsa.h>
+#include "cmd.h"
+
+static struct cmd_table {
+ char *cmd_name;
+ int cmd_id;
+} cmd_table[] = {
+ {"addr", CMD_ADDR},
+ {"boot", CMD_BOOT},
+ {"cd", CMD_CD},
+ {"device", CMD_DEVICE},
+ {"help", CMD_HELP},
+ {"image", CMD_IMAGE},
+ {"ls", CMD_LS},
+ {"nope", CMD_NOPE},
+ {"reboot", CMD_REBOOT},
+ {"set", CMD_SET},
+ {NULL, 0},
+};
+
+extern char version[];
+void ls __P((char *, register struct stat *));
+char skipblnk __P((void));
+
+char cmd_buf[133];
+
+int
+getcmd(cmd)
+ register struct cmd_state *cmd;
+{
+ register struct cmd_table *ct = cmd_table;
+ register char *p = cmd_buf; /* input */
+ register char ch;
+ int len;
+
+ cmd->rc = 0;
+ cmd->argc = 1;
+
+ for (len = cmd->timeout; len-- && !ischar(); );
+
+ if (len < 0) {
+ cmd->cmd = CMD_BOOT;
+ cmd->argv[0] = cmd_table[CMD_BOOT].cmd_name;
+ cmd->argv[1] = NULL;
+ return 0;
+ }
+
+ ch = skipblnk();
+
+ for (len = 0; ch != '\n' &&
+ ch != ' ' && ch != '\t'; len++, ch = getchar())
+ *p++ = ch;
+ *p = '\0';
+
+ if (len == 0 && ch == '\n') {
+ cmd->cmd = CMD_NOPE;
+ return 0;
+ }
+
+ while (ct->cmd_name != NULL &&
+ strncmp(cmd_buf, ct->cmd_name, len))
+ ct++;
+
+ if (ct->cmd_name == NULL) {
+ cmd->cmd = CMD_ERROR;
+ cmd->argv[0] = ct->cmd_name;
+ return 0;
+ }
+
+ cmd->cmd = ct->cmd_id;
+ cmd->argv[0] = ct->cmd_name;
+ if (ct->cmd_name != NULL) {
+ while (ch != '\n') {
+
+ ch = skipblnk();
+
+ if (ch != '\n') {
+ cmd->argv[cmd->argc] = p;
+ *p++ = ch;
+ for (len = 0; (ch = getchar()) != '\n' &&
+ ch != ' ' && ch != '\t'; len++)
+ *p++ = ch;
+ *p++ = '\0';
+ if (len != 0)
+ cmd->argc++;
+ }
+ }
+ cmd->argv[cmd->argc] = NULL;
+ }
+
+ return cmd->rc;
+}
+
+char
+skipblnk()
+{
+ register char ch;
+
+ /* skip blanks */
+ while ((ch = getchar()) != '\n' &&
+ (ch == ' ' || ch == '\t'));
+
+ return ch;
+}
+
+int
+execmd(cmd)
+ register struct cmd_state *cmd;
+{
+ struct stat sb;
+ int fd;
+ register char *p, *q;
+ register struct cmd_table *ct;
+
+ cmd->rc = 0;
+
+ switch (cmd->cmd) {
+
+ case CMD_HELP:
+ printf("commands: ");
+ for (ct = cmd_table; ct->cmd_name != NULL; ct++)
+ printf(" %s", ct->cmd_name);
+ putchar('\n');
+ break;
+
+ case CMD_DEVICE:
+ if (cmd->argc != 2)
+ printf("device: device name required\n");
+ else {
+ strncpy(cmd->bootdev, cmd->argv[1],
+ sizeof(cmd->bootdev));
+ }
+ break;
+
+ case CMD_IMAGE:
+ if (cmd->argc != 2)
+ printf("image: pathname required\n");
+ else {
+ strncpy(cmd->image, cmd->argv[1],
+ sizeof(cmd->image));
+ }
+ break;
+
+ case CMD_ADDR:
+ if (cmd->argc != 2)
+ printf("addr: address required\n");
+ else {
+ register u_long a;
+
+ p = cmd->argv[1];
+ if (p[0] == '0' && p[1] == 'x')
+ p += 2;
+ for (a = 0; *p != '\0'; p++) {
+ a <<= 4;
+ a |= (isdigit(*p)? *p - '0':
+ 10 + tolower(*p) - 'a') & 0xf;
+ }
+
+ cmd->addr = (void *)a;
+ }
+ break;
+
+ case CMD_LS:
+ {
+ q = cmd->argv[1] == NULL? "." : cmd->argv[1];
+ sprintf(cmd->path, "%s%s%s",
+ cmd->bootdev, cmd->cwd, q);
+
+ if (stat(cmd->path, &sb) < 0) {
+ printf("stat(%s): %d\n", cmd->path, errno);
+ break;
+ }
+
+ if ((sb.st_mode & S_IFMT) != S_IFDIR)
+ ls(q, &sb);
+ else {
+ if ((fd = opendir(cmd->path)) < 0) {
+ printf ("opendir(%s): %d\n",
+ cmd->path, errno);
+ break;
+ }
+
+ p = cmd->path + strlen(cmd->path);
+ *p++ = '/';
+ *p = '\0';
+
+ while(readdir(fd, p) >= 0 && *p != '\0') {
+
+ if (stat(cmd->path, &sb) < 0) {
+ printf("stat(%s): %d\n",
+ cmd->path, errno);
+ break;
+ }
+ ls(p, &sb);
+ }
+
+ closedir (fd);
+ }
+ }
+ break;
+
+ case CMD_CD:
+ if (cmd->argc == 1) {
+ cmd->cwd[0] = '/';
+ cmd->cwd[1] = '\0';
+ break;
+ }
+
+ if (cmd->argv[1][0] == '.' && cmd->argv[1][1] == '\0')
+ break;
+
+ if (cmd->argv[1][0] == '.' && cmd->argv[1][1] == '.'
+ && cmd->argv[1][2] == '\0') {
+ /* strrchr(cmd->cwd, '/'); */
+ for (p = cmd->cwd; *++p;);
+ for (p--; *--p != '/';);
+ p[1] = '\0';
+ break;
+ }
+
+ sprintf(cmd->path, "%s%s%s",
+ cmd->bootdev, cmd->cwd, cmd->argv[1]);
+ if (stat(cmd->path, &sb) < 0) {
+ printf("stat(%s): %d\n", cmd->argv[1], errno);
+ break;
+ }
+
+ if (!S_ISDIR(sb.st_mode)) {
+ printf("boot: %s: not a dir\n", cmd->argv[1]);
+ break;
+ }
+
+ /* change dir */
+ for (p = cmd->cwd; *p; p++);
+ for (q = cmd->argv[1]; (*p++ = *q++) != '\0';);
+ if (p[-2] != '/') {
+ p[-1] = '/';
+ p[0] = '\0';
+ }
+ break;
+
+ case CMD_SET:
+ printf("OpenBSD boot version %s\n"
+ "device:\t%s\n"
+ "cwd:\t%s\n"
+ "image:\t%s\n"
+ "load at:\t%p\n"
+ "timeout:\t%d\n",
+ version, cmd->bootdev, cmd->cwd, cmd->image,
+ cmd->addr, cmd->timeout);
+ break;
+
+ case CMD_REBOOT:
+ exit(1);
+ break;
+
+ case CMD_BOOT:
+ return 1;
+ break;
+
+ case CMD_ERROR:
+ default:
+ printf ("%s: invalid command\n", cmd->argv[0]);
+ case CMD_NOPE:
+ break;
+ }
+
+ return cmd->rc;
+}
+
+#define lsrwx(mode,s) \
+ putchar ((mode) & S_IROTH? 'r' : '-'); \
+ putchar ((mode) & S_IWOTH? 'w' : '-'); \
+ putchar ((mode) & S_IXOTH? *(s): (s)[1]);
+
+void
+ls(name, sb)
+ char *name;
+ register struct stat *sb;
+{
+ putchar("-fc-d-b---l-s-w-"[(sb->st_mode & S_IFMT) >> 12]);
+ lsrwx(sb->st_mode >> 6, (sb->st_mode & S_ISUID? "sS" : "x-"));
+ lsrwx(sb->st_mode >> 3, (sb->st_mode & S_ISUID? "sS" : "x-"));
+ lsrwx(sb->st_mode , (sb->st_mode & S_ISTXT? "tT" : "x-"));
+
+ printf (" %s\tuid=%u\tgid=%u\t%lu\n", name, sb->st_uid, sb->st_gid,
+ (u_long)sb->st_size);
+}
+
--- /dev/null
+/* $OpenBSD: cmd.h,v 1.1 1997/03/31 03:12:03 weingart Exp $ */
+
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+struct cmd_state {
+ char bootdev[16]; /* device */
+ char image[32]; /* image */
+ char cwd[MAXPATHLEN - 32 - 32];
+ void *addr; /* load here */
+ int timeout;
+ char path[MAXPATHLEN]; /* buffer for pathname compose */
+
+ enum { CMD_ADDR, CMD_BOOT, CMD_CD, CMD_DEVICE, CMD_HELP,
+ CMD_IMAGE, CMD_LS, CMD_NOPE, CMD_REBOOT, CMD_SET,
+ CMD_ERROR /* last !!! */ };
+ int cmd;
+ int argc;
+ char *argv[8]; /* XXX i hope this is enough */
+ int rc;
+};
+
+int getcmd __P((register struct cmd_state *));
+int execmd __P((register struct cmd_state *));
--- /dev/null
+/* $OpenBSD: conf.c,v 1.2 1997/03/31 03:12:04 weingart Exp $ */
+
+/*
+ * Copyright (c) 1996 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <libsa.h>
+#include <ufs.h>
+#include <nfs.h>
+#include <cd9660.h>
+#include <netif.h>
+#include "biosdev.h"
+#include "unixdev.h"
+
+int debug = 1;
+
+struct fs_ops file_system[] = {
+ { ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek,
+ ufs_stat, ufs_readdir },
+#ifdef notdef
+ { fat_open, fat_close, fat_read, fat_write, fat_seek,
+ fat_stat, fat_readdir },
+ { cd9660_open, cd9660_close, cd9660_read, cd9660_write, cd9660_seek,
+ cd9660_stat, cd9660_readdir },
+#endif
+#ifndef NO_NET
+ { nfs_open, nfs_close, nfs_read, nfs_write, nfs_seek,
+ nfs_stat, nfs_readdir },
+#endif
+#ifdef _TEST
+ { null_open, null_close, null_read, null_write, null_seek,
+ null_stat, null_readdir }
+#endif
+};
+int nfsys = NENTS(file_system);
+
+struct devsw devsw[] = {
+#ifdef _TEST
+ { "UNIX", unixstrategy, unixopen, unixclose, unixioctl },
+#else
+ { "BIOS", biosstrategy, biosopen, biosclose, biosioctl },
+#endif
+};
+int ndevs = NENTS(devsw);
+
+#ifndef NO_NET
+struct netif_driver *netif_drivers[] = {
+ NULL
+};
+int n_netif_drivers = NENTS(netif_drivers);
+#endif
+
+struct consw consw[] = {
+#ifdef _TEST
+ { "unix",unix_probe,unix_putc,unix_getc,unix_ischar},
+#else
+ { "kbd", kbd_probe, kbd_putc, kbd_getc, kbd_ischar },
+ { "com", com_probe, com_putc, com_getc, com_ischar },
+#endif
+};
+int ncons = NENTS(consw);
+
--- /dev/null
+/* $OpenBSD: crt0.c,v 1.1 1997/03/31 03:12:04 weingart Exp $ */
+
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/syscall.h>
+#include <termios.h>
+#include "libsa.h"
+#include "unixdev.h"
+
+extern void start __P((void)) asm("start");
+extern int main __P((int, char **, char **));
+static void domap __P((void));
+static void seterm __P((void));
+
+void
+start()
+{
+ domap();
+ seterm();
+ uexit(main(0, NULL, NULL));
+}
+
+#define ummap(a,l,p,f,fd,o) (caddr_t)syscall((quad_t)SYS_mmap,a,l,p,f,fd,0,o)
+
+static void
+domap()
+{
+ extern char end[];
+ register caddr_t p = (caddr_t)(((u_long)end + PGOFSET) & ~PGOFSET);
+ register size_t sz = 0x10000 - (u_long)p - NBPG;
+
+#ifdef DEBUG
+ /* we are low on memory w/ the DEBUG defined ); */
+ sz = 40 * NBPG;
+#endif
+
+ /* map heap */
+ if ( (p = ummap(p, sz, PROT_READ|PROT_WRITE,
+ MAP_FIXED|MAP_ANON, -1, 0)) == (caddr_t)-1) {
+ printf("mmap failed: %d\n", errno);
+ uexit(1);
+ }
+#ifdef DEBUG
+ else
+ printf("mmap==%p\n", p);
+#endif
+
+ /* map kernel */
+ if ( (p = ummap(0x100000, 0xf00000, PROT_READ|PROT_WRITE,
+ MAP_FIXED|MAP_ANON, -1, 0)) == (caddr_t)-1) {
+ printf("mmap failed: %d\n", errno);
+ uexit(1);
+ }
+#ifdef DEBUG
+ else
+ printf("mmap==%p\n", p);
+#endif
+
+}
+
+void
+seterm()
+{
+ struct termios tc;
+
+ if (uioctl(0, TIOCGETA, (char *)&tc) < 0) {
+ printf("cannot get tty\n");
+ uexit(1);
+ }
+
+ tc.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
+ tc.c_oflag &= ~OPOST;
+ tc.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+ tc.c_cflag &= ~(CSIZE|PARENB);
+ tc.c_cflag |= CS8;
+
+ if (uioctl(0, TIOCSETA, (char *)&tc) < 0) {
+ printf("cannot set tty\n");
+ uexit(1);
+ }
+}
--- /dev/null
+/* $OpenBSD: srt0.S,v 1.1 1997/03/31 03:12:05 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>
+#define _LOCORE
+#include <machine/segments.h>
+#undef _LOCORE
+
+ .globl _end
+ .globl _edata
+ .globl _boot
+ .globl __rtt
+
+ .data
+ .globl _Gdtr
+ .align 2
+_Gdtr: .word 4 * 8 - 1
+ .long 2f
+ .align 3
+2: /* 0x00 : null */
+ .long 0, 0
+ /* 0x08 : flat code */
+ .word 0xFFFF # lolimit
+ .word 0 # lobase
+ .byte 0 # midbase
+ .byte SDT_MEMERAC | 0 | 0x80 # RWXAC, dpl = 0, present
+ .byte 0xf | 0 | 0x40 | 0x80 # hilimit, xx, 32bit, 4k granularity
+ .byte 0 # hibase
+ /* 0x10 : flat data */
+ .word 0xFFFF # lolimit
+ .word 0 # lobase
+ .byte 0 # midbase
+ .byte SDT_MEMRWA | 0 | 0x80 # RWA, dpl = 0, present
+ .byte 0xf | 0 | 0x40 | 0x80 # hilimit, xx, 32bit, 4k granularity
+ .byte 0 # hibase
+ /* 0x18 : 16 bit code */
+ .word 0xFFFF # lolimit
+ .word 0 # lobase
+ .byte 0 # midbase
+ .byte SDT_MEMERC | 0 | 0x80 # RWXAC, dpl = 0, present
+ .byte 0x0 | 0 | 0 | 0 # hilimit, xx, 16bit, byte granularity
+ .byte 0 # hibase
+
+ .globl _codeseg
+ .globl _bootdev
+ .globl _boothowto
+ .globl _cyloffset
+_codeseg: .long 0
+_bootdev: .long 0
+_boothowto: .long 0
+_cyloffset: .long 0
+_esym: .long 0
+
+ .text
+text_start:
+
+#define NOP inb $0x84,%al ; inb $0x84,%al
+
+ .globl start_boot
+
+start_boot:
+ pushl %ebp
+ movl %esp, %ebp
+
+#ifdef REL
+ /* relocate code+data */
+ call 1f
+1: popl %esi
+ subl $1b, %esi
+ addl $text_start, %esi /* %esi = %eip - (1b - text_start) */
+ subl $0x20, %esi /* XXX - Fudge factor for header */
+ movl $REL, %edi
+ movl $_edata, %ecx
+ subl $text_start, %ecx
+ shrl $2, %ecx
+ incl %ecx
+ cld
+ rep
+ movsl
+#endif /* REL */
+
+ lgdt _Gdtr
+
+ /* The following should *not* be moved before the lgdt.
+ * Trust me, bad things will happen!
+ * Start executing from relocated code
+ */
+ movl $0x10, %eax
+ movl %eax, %ds
+ movl %eax, %es
+ movl %eax, %fs
+ movl %eax, %gs
+ movl %eax, %ss
+ ljmp $0x8,$docs
+docs:
+ nop
+
+ /* XXX - I don't know if the following is right */
+ 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
+
+ /* setup stack pointer */
+#ifdef REL
+ movl $0xfffc, %esp
+#else
+ movl $_end, %eax
+ addl $10000, %eax
+ movl %eax, %esp
+#endif
+
+ /* clear memory as needed */
+ movl %esp,%esi
+ movl $_end, %eax
+ subl $_edata,%eax
+ pushl %eax
+ pushl $0
+ pushl $_edata
+ call _memset
+ #call _kbdreset /* resets keyboard and gatea20 brain damage */
+ movl %esi,%esp
+
+ pushl __rtt
+ ljmp $0x8, $_boot /* Jmp to boot code */
+
+ .data
+
+savearea: .long 0,0 # sp & bp to return to
+
+ .text
+
+__rtt:
+ movl $-7,%eax
+#ifdef REL
+ movw $0x1234,%ax
+ movw %ax,0x472 # warm boot
+ movl $0,%esp # segment violation
+ ret
+#else
+ movl savearea,%esp
+ movl savearea+4,%ebp
+ ret
+#endif
+
+ .globl _inb
+_inb: movl 4(%esp),%edx
+ subl %eax,%eax # clr eax
+ NOP
+ inb %dx,%al
+ ret
+
+ .globl _outb
+_outb: movl 4(%esp),%edx
+ NOP
+ movl 8(%esp),%eax
+ outb %al,%dx
+ ret
+
+ .globl ___udivsi3
+___udivsi3:
+ movl 4(%esp),%eax
+ xorl %edx,%edx
+ divl 8(%esp)
+ ret
+
+ .globl ___divsi3
+___divsi3:
+ movl 4(%esp),%eax
+ xorl %edx,%edx
+ cltd
+ idivl 8(%esp)
+ ret
+
+ .globl _insw
+_insw:
+ pushl %edi
+ movw 8(%esp),%dx
+ movl 12(%esp),%edi
+ movl 16(%esp),%ecx
+ NOP
+ cld
+ nop
+ .byte 0x66,0xf2,0x6d # rep insw
+ nop
+ movl %edi,%eax
+ popl %edi
+ ret
+
+ # outsw(port,addr,cnt)
+ .globl _outsw
+_outsw:
+ pushl %esi
+ movw 8(%esp),%dx
+ movl 12(%esp),%esi
+ movl 16(%esp),%ecx
+ NOP
+ cld
+ nop
+ .byte 0x66,0xf2,0x6f # rep outsw
+ nop
+ movl %esi,%eax
+ popl %esi
+ ret
+
--- /dev/null
+
+char version[] = "1.0";
--- /dev/null
+# $OpenBSD: Makefile,v 1.2 1997/03/31 03:12:06 weingart Exp $
+
+PROG= installboot
+CFLAGS+=-DDEBUG -g -Wall
+MAN= installboot.8
+
+# Need this to work in the miniroot
+LDSTATIC= -static
+
+.include <bsd.prog.mk>
--- /dev/null
+.\" $OpenBSD: installboot.8,v 1.2 1997/03/31 03:12:06 weingart Exp $
+.\"
+.Dd 31 May 1995
+.Dt INSTALLBOOT 8
+.Os
+.Sh NAME
+.Nm installboot
+.Nd install a bootstrap on a UFS disk
+.Sh SYNOPSIS
+.Nm installboot
+.Fl n | Fl v
+.Ar ufsboot
+.Ar bootxx
+.Ar rawdev
+.Sh DESCRIPTION
+.Nm installboot
+is used to install a "first-stage" boot program into the boot area
+of a UFS disk partition, and initialize the table of block numbers the
+.Ar bootxx
+program uses to load the second-stage boot program.
+.Pp
+The options are as follows:
+.Bl -tag -width flag
+.It Fl n
+Do not actually write anything on the disk.
+.It Fl v
+Be verbose, printing out the block numbers that
+.Ar bootxx
+will use to load
+.Ar ufsboot .
+.El
+.Pp
+The arguments are:
+.Bl -tag -width ufsboot
+.It Ar ufsboot
+the name of the second-stage boot program in the file system
+where the first-stage boot program is to be installed.
+.It Ar bootxx
+the name of the prototype file for the first stage boot program.
+.It Ar rawdev
+the name of the raw device in which the first-stage boot program
+is to be installed. This should correspond to the block device
+on which the file system containing
+.Ar ufsboot
+is mounted.
+.El
+.Sh BUGS
+.Nm installboot
+requires simultaneous access to the mounted file system and
+the raw device, but that is not allowed with the kernel
+.Nm securelevel
+variable set to a value greater than zero (the default), so
+.Nm installboot
+only works in single-user mode (or insecure mode - see
+.Xr init 8 ).
+.Sh "SEE ALSO"
+.Xr disklabel 8 ,
+.Xr init 8
--- /dev/null
+/* $OpenBSD: installboot.c,v 1.2 1997/03/31 03:12:07 weingart Exp $ */
+/* $NetBSD: installboot.c,v 1.5 1995/11/17 23:23:50 gwr Exp $ */
+
+/*
+ * Copyright (c) 1994 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 <sys/mount.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <sys/disklabel.h>
+#include <sys/dkio.h>
+#include <sys/ioctl.h>
+#include <ufs/ufs/dinode.h>
+#include <ufs/ufs/dir.h>
+#include <ufs/ffs/fs.h>
+#include <err.h>
+#include <a.out.h>
+#include <fcntl.h>
+#include <nlist.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+int verbose, nowrite;
+char *boot, *proto, *dev;
+struct nlist nl[] = {
+#define X_BLOCK_COUNT 0
+ {{"_block_count"}},
+#define X_BLOCK_TABLE 1
+ {{"_block_table"}},
+ {{NULL}}
+};
+
+u_int8_t *block_count_p; /* block count var. in prototype image */
+u_int8_t *block_table_p; /* block number array in prototype image */
+int maxblocknum; /* size of this array */
+
+
+char *loadprotoblocks __P((char *, long *));
+int loadblocknums __P((char *, int));
+static void devread __P((int, void *, daddr_t, size_t, char *));
+static void usage __P((void));
+static int record_block
+ __P((u_int8_t *, daddr_t, u_int, struct disklabel *));
+
+static void
+usage()
+{
+ fprintf(stderr,
+ "usage: installboot [-n] [-v] <boot> <proto> <device>\n");
+ exit(1);
+}
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int c;
+ int devfd;
+ char *protostore;
+ long protosize;
+
+ while ((c = getopt(argc, argv, "vn")) != EOF) {
+ switch (c) {
+ case 'n':
+ /* Do not actually write the bootblock to disk */
+ nowrite = 1;
+ break;
+ case 'v':
+ /* Chat */
+ verbose = 1;
+ break;
+ default:
+ usage();
+ }
+ }
+
+ if (argc - optind < 3) {
+ usage();
+ }
+
+ boot = argv[optind];
+ proto = argv[optind + 1];
+ dev = argv[optind + 2];
+
+ if (verbose) {
+ printf("boot: %s\n", boot);
+ printf("proto: %s\n", proto);
+ printf("device: %s\n", dev);
+ }
+
+ /* Load proto blocks into core */
+ if ((protostore = loadprotoblocks(proto, &protosize)) == NULL)
+ exit(1);
+
+ /* XXX - Paranoia: Make sure size is aligned! */
+ if (protosize & (DEV_BSIZE - 1))
+ err(1, "proto bootblock bad size=%ld", protosize);
+
+ /* Open and check raw disk device */
+ if ((devfd = open(dev, O_RDONLY, 0)) < 0)
+ err(1, "open: %s", dev);
+
+ /* Extract and load block numbers */
+ if (loadblocknums(boot, devfd) != 0)
+ exit(1);
+
+ (void)close(devfd);
+
+ if (nowrite)
+ return 0;
+
+ /* Write patched proto bootblocks into the superblock */
+ if (protosize > SBSIZE - DEV_BSIZE)
+ errx(1, "proto bootblocks too big");
+
+ if ((devfd = open(dev, O_RDWR, 0)) < 0)
+ err(1, "open: %s", dev);
+
+ /* Sync filesystems (to clean in-memory superblock?) */
+ sync();
+
+ if (write(devfd, protostore, protosize) != protosize)
+ err(1, "write bootstrap");
+ (void)close(devfd);
+ return 0;
+}
+
+char *
+loadprotoblocks(fname, size)
+ char *fname;
+ long *size;
+{
+ int fd;
+ size_t tdsize; /* text+data size */
+ char *bp;
+ struct nlist *nlp;
+ struct exec eh;
+
+ fd = -1;
+ bp = NULL;
+
+ /* Locate block number array in proto file */
+ if (nlist(fname, nl) != 0) {
+ warnx("nlist: %s: symbols not found", fname);
+ return NULL;
+ }
+ /* Validate symbol types (global data). */
+ for (nlp = nl; nlp->n_un.n_name; nlp++) {
+ if (nlp->n_type != (N_TEXT | N_EXT)) {
+ warnx("nlist: %s: wrong type", nlp->n_un.n_name);
+ return NULL;
+ }
+ }
+
+ if ((fd = open(fname, O_RDONLY)) < 0) {
+ warn("open: %s", fname);
+ return NULL;
+ }
+ if (read(fd, &eh, sizeof(eh)) != sizeof(eh)) {
+ warn("read: %s", fname);
+ goto bad;
+ }
+ if (N_GETMAGIC(eh) != OMAGIC) {
+ warn("bad magic: 0x%lx", eh.a_midmag);
+ goto bad;
+ }
+ /*
+ * We have to include the exec header in the beginning of
+ * the buffer, and leave extra space at the end in case
+ * the actual write to disk wants to skip the header.
+ */
+ tdsize = eh.a_text + eh.a_data;
+
+ /*
+ * Allocate extra space here because the caller may copy
+ * the boot block starting at the end of the exec header.
+ * This prevents reading beyond the end of the buffer.
+ */
+ if ((bp = calloc(tdsize, 1)) == NULL) {
+ warnx("malloc: %s: no memory", fname);
+ goto bad;
+ }
+ /* Read the rest of the file. */
+ if (read(fd, bp, tdsize) != tdsize) {
+ warn("read: %s", fname);
+ goto bad;
+ }
+
+ *size = tdsize; /* not aligned to DEV_BSIZE */
+
+ /* Calculate the symbols' locations within the proto file */
+ block_count_p = (u_int8_t *) (bp + nl[X_BLOCK_COUNT].n_value);
+ block_table_p = (u_int8_t *) (bp + nl[X_BLOCK_TABLE].n_value);
+ maxblocknum = *block_count_p;
+
+ if (verbose) {
+ printf("%s: entry point %#lx\n", fname, eh.a_entry);
+ printf("proto bootblock size %ld\n", *size);
+ printf("room for %d filesystem blocks at %#lx\n",
+ maxblocknum, nl[X_BLOCK_TABLE].n_value);
+ }
+
+ close(fd);
+ return bp;
+
+ bad:
+ if (bp)
+ free(bp);
+ if (fd >= 0)
+ close(fd);
+ return NULL;
+}
+
+static void
+devread(fd, buf, blk, size, msg)
+ int fd;
+ void *buf;
+ daddr_t blk;
+ size_t size;
+ char *msg;
+{
+ if (lseek(fd, dbtob(blk), SEEK_SET) != dbtob(blk))
+ err(1, "%s: devread: lseek", msg);
+
+ if (read(fd, buf, size) != size)
+ err(1, "%s: devread: read", msg);
+}
+
+static char sblock[SBSIZE];
+
+int
+loadblocknums(boot, devfd)
+char *boot;
+int devfd;
+{
+ int i, fd;
+ struct stat statbuf;
+ struct statfs statfsbuf;
+ struct disklabel dl;
+ struct fs *fs;
+ char *buf;
+ daddr_t blk, *ap;
+ struct dinode *ip;
+ int ndb;
+ u_int8_t *bt;
+ struct exec eh;
+
+ /*
+ * Open 2nd-level boot program and record the block numbers
+ * it occupies on the filesystem represented by `devfd'.
+ */
+
+ /* Make sure the (probably new) boot file is on disk. */
+ sync(); sleep(1);
+
+ if (ioctl(devfd, DIOCGDINFO, &dl) != 0)
+ err(1, "disklabel: %s", dev);
+
+ /* check disklabel */
+ if (dl.d_magic != DISKMAGIC)
+ err(1, "bad disklabel magic=%0x8x", dl.d_magic);
+
+ if ((fd = open(boot, O_RDONLY)) < 0)
+ err(1, "open: %s", boot);
+
+ if (fstatfs(fd, &statfsbuf) != 0)
+ err(1, "statfs: %s", boot);
+
+ if (strncmp(statfsbuf.f_fstypename, "ffs", MFSNAMELEN) &&
+ strncmp(statfsbuf.f_fstypename, "ufs", MFSNAMELEN) ) {
+ errx(1, "%s: must be on an FFS filesystem", boot);
+ }
+
+ if (read(fd, &eh, sizeof(eh)) != sizeof(eh)) {
+ errx(1, "read: %s", boot);
+ }
+
+ if (N_GETMAGIC(eh) != ZMAGIC) {
+ errx(1, "%s: bad magic: 0x%lx", boot, eh.a_midmag);
+ }
+
+ if (fsync(fd) != 0)
+ err(1, "fsync: %s", boot);
+
+ if (fstat(fd, &statbuf) != 0)
+ err(1, "fstat: %s", boot);
+
+ close(fd);
+
+ /* Read superblock */
+ devread(devfd, sblock, SBLOCK, SBSIZE, "superblock");
+ fs = (struct fs *)sblock;
+
+ /* Sanity-check super-block. */
+ if (fs->fs_magic != FS_MAGIC)
+ errx(1, "Bad magic number in superblock");
+ if (fs->fs_inopb <= 0)
+ err(1, "Bad inopb=%d in superblock", fs->fs_inopb);
+
+ /* Read inode */
+ if ((buf = malloc(fs->fs_bsize)) == NULL)
+ errx(1, "No memory for filesystem block");
+
+ blk = fsbtodb(fs, ino_to_fsba(fs, statbuf.st_ino));
+ devread(devfd, buf, blk, fs->fs_bsize, "inode");
+ ip = (struct dinode *)(buf) + ino_to_fsbo(fs, statbuf.st_ino);
+
+ /*
+ * Have the inode. Figure out how many blocks we need.
+ */
+ ndb = howmany(ip->di_size, fs->fs_bsize);
+ if (ndb > maxblocknum)
+ errx(1, "Too many blocks");
+ if (verbose)
+ printf("Will load %d blocks of size %d each.\n",
+ ndb, fs->fs_bsize);
+
+ /*
+ * Get the block numbers; we don't handle fragments
+ */
+ ap = ip->di_db;
+ bt = block_table_p;
+ for (i = 0; i < NDADDR && *ap && ndb; i++, ap++, ndb--)
+ bt += record_block(bt, fsbtodb(fs, *ap),
+ fs->fs_bsize / 512, &dl);
+ if (ndb != 0) {
+
+ /*
+ * Just one level of indirections; there isn't much room
+ * for more in the 1st-level bootblocks anyway.
+ */
+ blk = fsbtodb(fs, ip->di_ib[0]);
+ devread(devfd, buf, blk, fs->fs_bsize, "indirect block");
+ ap = (daddr_t *)buf;
+ for (; i < NINDIR(fs) && *ap && ndb; i++, ap++, ndb--)
+ bt += record_block(bt, fsbtodb(fs, *ap),
+ fs->fs_bsize / 512, &dl);
+ }
+
+ /* write out remaining piece */
+ bt += record_block(bt, 0, 0, &dl);
+ /* and again */
+ bt += record_block(bt, 0, 0, &dl);
+ *block_count_p = (bt - block_table_p) / 4;
+
+ if (verbose)
+ printf("%s: %d entries total\n", boot, *block_count_p);
+
+ return 0;
+}
+
+static int
+record_block(bt, blk, bs, dl)
+ u_int8_t *bt;
+ daddr_t blk;
+ u_int bs;
+ struct disklabel *dl;
+{
+ static u_int ss = 0, l = 0, i = 0; /* start and len of group */
+ int ret = 0;
+
+ if (ss == 0) { /* very beginning */
+ ss = blk;
+ l = bs;
+ return 0;
+ } else if (l == 0)
+ return 0;
+
+ /* record on track boundary or non-contig blocks or last call */
+ if ((ss + l) != blk ||
+ (ss % dl->d_nsectors + l) >= dl->d_nsectors) {
+ register u_int c = ss / dl->d_secpercyl,
+ s = ss % dl->d_nsectors + 1;
+
+ /* nsectors */
+ if ((ss % dl->d_nsectors + l) >= dl->d_nsectors)
+ bt[3] = dl->d_nsectors - s + 1;
+ else
+ bt[3] = l; /* non-contig or last block piece */
+
+ bt[2] = (ss % dl->d_secpercyl) / dl->d_nsectors; /* head */
+ *(u_int16_t *)bt = (s & 0x3f) | /* sect, cyl */
+ ((c & 0xff) << 8) | ((c & 0x300) >> 2);
+
+ if (verbose)
+ printf("%2d: %2d @(%d %d %d) (%d-%d)\n",
+ i, bt[3], c, bt[2], s, ss, ss + bt[3] - 1);
+
+ if ((ss % dl->d_nsectors + l) >= dl->d_nsectors) {
+ ss += bt[3];
+ l -= bt[3];
+ l += bs;
+ } else {
+ ss = blk;
+ l = bs;
+ }
+
+ i++;
+ ret = 4;
+ } else {
+ l += bs;
+ }
+
+ return ret;
+}
--- /dev/null
+# $OpenBSD: Makefile,v 1.2 1997/03/31 03:12:08 weingart Exp $
+
+
+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+=${DEBUGFLAGS} -I${.CURDIR} -I${.CURDIR}/..
+CFLAGS+=-I${.CURDIR}/../../../.. -I${.CURDIR}/../../../../lib/libsa
+#AS+= -Wa,-a
+
+S=${.CURDIR}/../../../..
+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
+
+# 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
+
+# network routines
+SRCS+= arp.c ether.c in_cksum.c net.c netif.c rpc.c
+
+# network info services
+SRCS+= bootp.c bootparam.c rarp.c
+
+# boot filesystems
+SRCS+= ufs.c nfs.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
+
+NOPROFILE=noprofile
+NOPIC=nopic
+
+.PATH: ${DIR_SA} ${DIR_KERN}
+
+all: ${SALIB}
+
+.include <bsd.lib.mk>
+
--- /dev/null
+/* $OpenBSD: asm.S,v 1.1 1997/03/31 03:12:08 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
+ */
+
+ .globl _inb
+_inb: movl 4(%esp),%edx
+ subl %eax,%eax # clr eax
+ NOP
+ inb %dx,%al
+ ret
+
+ .globl _outb
+_outb: movl 4(%esp),%edx
+ NOP
+ movl 8(%esp),%eax
+ outb %al,%dx
+ ret
+
+ .globl ___udivsi3
+___udivsi3:
+ movl 4(%esp),%eax
+ xorl %edx,%edx
+ divl 8(%esp)
+ ret
+
+ .globl ___divsi3
+___divsi3:
+ movl 4(%esp),%eax
+ xorl %edx,%edx
+ cltd
+ idivl 8(%esp)
+ ret
+
+ .globl _insw
+_insw:
+ pushl %edi
+ movw 8(%esp),%dx
+ movl 12(%esp),%edi
+ movl 16(%esp),%ecx
+ NOP
+ cld
+ nop
+ .byte 0x66,0xf2,0x6d # rep insw
+ nop
+ movl %edi,%eax
+ popl %edi
+ ret
+
+ # outsw(port,addr,cnt)
+ .globl _outsw
+_outsw:
+ pushl %esi
+ movw 8(%esp),%dx
+ movl 12(%esp),%esi
+ movl 16(%esp),%ecx
+ NOP
+ cld
+ nop
+ .byte 0x66,0xf2,0x6f # rep outsw
+ nop
+ movl %esi,%eax
+ popl %esi
+ ret
+
--- /dev/null
+/* $OpenBSD: bioscom.S,v 1.2 1997/03/31 03:12:09 weingart Exp $ */
+
+/*
+ * 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.
+ *
+ * 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 $
+ */
+
+/*
+ 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.
+*/
+
+/*
+ * Serial bootblock interface routines
+ * Copyright (c) 1994, J"org Wunsch
+ *
+ * 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.
+ *
+ * THE AUTHOR ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION. THE AUTHOR DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ */
+
+ .file "serial.s"
+
+#include <machine/asm.h>
+
+port:
+ .long 0x3f8
+
+ .text
+
+/*
+ * The serial port interface routines implement a simple polled i/o
+ * interface to a standard serial port. Due to the space restrictions
+ * for the boot blocks, no BIOS support is used (since BIOS requires
+ * expensive real/protected mode switches), instead the rudimentary
+ * BIOS support is duplicated here.
+ *
+ * The base address for the i/o port is stored in 'port' variable upon
+ * probing for device. Console parameters are currently
+ * hard-coded to 9600 Bd, 8 bit. This can be changed in the
+ * init_serial() function.
+ */
+
+/*
+ * int com_probe();
+ * probe com[0-3] ports and store first found in 'port' variable
+ */
+ENTRY(com_probe)
+ push %ebp
+ mov %esp, %ebp
+
+ /*
+ * void init_serial(void)
+ * initialize the serial console port to 9600 Bd, 8 bpc
+ */
+ movl $port, %edx # line control reg
+ addb 5, %dl
+ movl $0x80, %eax
+ outb %al, %dx # enable DLAB
+
+ subb $3, %dl # divisor latch, low byte
+ movb $12, %al # divisor 12: 9600 Bd
+ outb %al, %dx
+ incl %edx # divisor latch, high byte
+ movb %ah, %al
+ outb %al, %dx
+
+ addb $2, %dl # line control reg
+ movb $0x13, %al
+ outb %al, %dx # 8 bit, no parity, 1 stop bit
+
+ incl %edx # modem control reg
+ movb $3, %al
+ outb %al, %dx # enable DTR/RTS
+
+ /* now finally, flush the input buffer */
+ incl %edx # line status reg
+1:
+ inb %dx, %al
+ testb $0x01, %al
+ jz 2f # no more characters buffered
+ subb $5, %dl # rx buffer reg
+ inb %dx, %al # throw away
+ addb $5, %dl
+ jmp 1b
+2:
+ xorl %eax, %eax # is present (:
+ incl %eax
+ popl %ebp
+ ret
+
+/*
+ * void com_putc(ch) char ch;
+ * send ch to serial port
+ *
+ */
+
+ENTRY(com_putc)
+ pushl %ebp
+ movl %esp, %ebp
+
+ movl $port, %edx # line status reg
+ add 5, %edx
+1: inb %dx, %al
+ test $0x20, %al
+ jz 1b # TX buffer not empty
+
+ movb 8(%ebp), %al
+
+ sub $5, %edx # TX output reg
+ outb %al, %dx # send this one
+
+ popl %ebp
+ ret
+
+/*
+ * int com_getc(void)
+ * read a character from serial port
+ */
+
+ENTRY(com_getc)
+ push %ebp
+ movl %esp, %ebp
+
+ movl $port, %edx # line status reg
+ addl 5, %edx
+1:
+ inb %dx, %al
+ testb $0x01, %al
+ jz 1b # no RX char available
+
+ xorl %eax, %eax
+ subl $5, %edx # RX buffer reg
+ inb %dx, %al # fetch (first) character
+
+ andb $0x7F, %eax # remove any parity bits we get
+ cmpb $0x7F, %eax # make DEL...
+ jne 2f
+ movb $0x08, %eax # look like BS
+2:
+ popl %ebp
+ ret
+
+/*
+ * int com_ischar(void)
+ * if there is a character pending, return true; otherwise return 0
+ */
+ENTRY(com_ischar)
+ push %ebp
+ mov %esp, %ebp
+
+ xorl %eax, %eax
+ movl $port, %edx # line status reg
+ addl 5, %edx
+ inb %dx, %al
+ andb $0x01, %al # RX char available?
+
+ pop %ebp
+ ret
+
--- /dev/null
+/* $OpenBSD: biosdev.c,v 1.2 1997/03/31 03:12:09 weingart Exp $ */
+
+/*
+ * Copyright (c) 1996 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+#include <sys/param.h>
+#include <libsa.h>
+#include "biosdev.h"
+
+dev_t maj, unit, part;
+
+int
+biosstrategy(void *devdata, int rw,
+ daddr_t blk, size_t size, void *buf, size_t *rsize)
+{
+ int error = 0;
+ 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;
+}
+
+int
+biosopen(struct open_file *f, ...)
+{
+ va_list ap;
+ register char *cp, *fname, **file;
+ static const char *devs[] = {"wd", "hd", "fd", "wt", "sd", NULL};
+
+ va_start(ap, f);
+ cp = fname = *(file = va_arg(ap, char **));
+ va_end(ap);
+
+ /* search for device specification */
+ while (*cp != 0 && *cp != '(')
+ cp++;
+ 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;
+ }
+ maj = devp - (char **)devs;
+ }
+ /* check syntax */
+ if (cp[1] != ',' || cp[3] != ')') {
+ printf("Syntax error\n");
+ errno = EINVAL;
+ return -1;
+ }
+
+ /* get unit */
+ if ('0' <= *cp && *cp <= '9')
+ unit = *cp++ - '0';
+ else {
+ printf("Bad unit number\n");
+ errno = ENXIO;
+ return -1;
+ }
+ cp++; /* skip ',' */
+ /* get partition */
+ if ('a' <= *cp && *cp <= 'p')
+ part = *cp++ - 'a';
+ else {
+ printf("Bad partition id\n");
+ errno = ENXIO;
+ return -1;
+ }
+ cp++; /* skip ')' */
+ if (*cp != 0)
+ *file = cp;
+
+ switch (maj) {
+ case 0:
+ case 4:
+ bootdev = unit | 0x80;
+ break;
+ case 1:
+ bootdev = unit | 0x80;
+ unit = 0;
+ break;
+ case 2:
+ bootdev = unit;
+ break;
+ case 3:
+#ifdef DEBUG
+ printf("Wangtek is unsupported\n");
+#endif
+ errno = ENXIO;
+ return -1;
+ default:
+ break;
+ }
+
+ }
+
+ return 0;
+}
+
+int
+biosclose(struct open_file *f)
+{
+
+ return 0;
+}
+
+int
+biosioctl(struct open_file *f, u_long cmd, void *data)
+{
+
+ return 0;
+}
+
--- /dev/null
+/* $OpenBSD: biosdev.h,v 1.2 1997/03/31 03:12:10 weingart Exp $ */
+
+/*
+ * Copyright (c) 1996 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+
+#define BIOSNHEADS(d) (((d)>>8)+1)
+#define BIOSNSECTS(d) ((d)&0xff) /* sectors are 1-based */
+
+/* biosdev.c */
+extern const char *biosdevs[];
+int biosstrategy __P((void *, int, daddr_t, size_t, void *, size_t *));
+int biosopen __P((struct open_file *, ...));
+int biosclose __P((struct open_file *));
+int biosioctl __P((struct open_file *, u_long, void *));
+
+/* biosdisk.S */
+u_int biosdinfo __P((int dev));
+int biosread __P((int dev, int cyl, int hd, int sect, int nsect, void *));
+int bioswrite __P((int dev, int cyl, int hd, int sect, int nsect, void *));
+
+/* bioskbd.S */
+int kbd_probe __P((void));
+void kbd_putc __P((int c));
+int kbd_getc __P((void));
+int kbd_ischar __P((void));
+
+/* bioscom.S */
+int com_probe __P((void));
+void com_putc __P((int c));
+int com_getc __P((void));
+int com_ischar __P((void));
+
+/* biostime.S */
+void usleep __P((u_long));
--- /dev/null
+/* $OpenBSD: biosdisk.S,v 1.2 1997/03/31 03:12:11 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
+
+/*
+# BIOS call "INT 0x13 Function 0x2" to read sectors from disk into memory
+# Call with %ah = 0x2
+# %al = number of sectors
+# %ch = cylinder
+# %cl = sector
+# %dh = head
+# %dl = drive (0x80 for hard disk, 0x0 for floppy disk)
+# %es:%bx = segment:offset of buffer
+# Return:
+# %al = 0x0 on success; err code on failure
+*/
+ENTRY(biosread)
+ pushl %ebp
+ movl %esp, %ebp
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+ push %es
+
+ movb 8(%ebp), %dl # device
+ movw 12(%ebp), %cx
+ xchgb %ch, %cl # cylinder; the highest 2 bits of cyl is in %cl
+ rorb $2, %cl
+ movb 16(%ebp), %dh # head
+ movb 20(%ebp), %al
+ orb %al, %cl
+ incb %cl # sector; sec starts from 1, not 0
+ movb $0x2, %ah # subfunction
+ 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
+
+ call _C_LABEL(prot_to_real) # enter real mode
+
+ # Restore %es
+ movl %di, %es
+
+ # Restore %ax
+ movl %si, %ax
+
+ int $0x13
+ setc %bl
+
+ data32
+ call _C_LABEL(real_to_prot) # back to protected mode
+
+ movzbl %bl, %eax # return value in %ax
+
+ pop %es
+ popl %edi
+ popl %esi
+ popl %ebx
+ popl %ebp
+ ret
+
+ENTRY(bioswrite)
+
+ movl $1, %eax
+ ret
+
+/*
+#
+# biosdinfo(): return a word that represents the
+# max number of sectors and heads and drives for this device
+#
+*/
+
+ENTRY(biosdinfo)
+ pushl %ebp
+ movl %esp, %ebp
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+
+ movb 8(%ebp), %dl # diskinfo(drive #)
+
+ call _C_LABEL(prot_to_real) # enter real mode
+
+ movb $0x08, %ah # ask for disk info
+ int $0x13
+ jnc ok
+
+ /*
+ * Urk. Call failed. It is not supported for floppies by old BIOS's.
+ * Guess it's a 15-sector floppy. Initialize all the registers for
+ * documentation, although we only need head and sector counts.
+ */
+ xorl %bx, %bx # %bh = 0
+ incw %bx; incw %bx # %bl bits 0-3 = drive type, 2 = 1.2M
+ movb $79, %ch # max track
+ movb $15, %cl # max sector
+ xorl %dx, %dx
+ incw %dx # floppy drives installed
+ movb %dl, %dh # max head
+ # es:di = parameter table
+ # carry = 0
+
+ok:
+ data32
+ call _C_LABEL(real_to_prot) # back to protected mode
+
+ xorl %eax, %eax
+
+ /* form a longword representing all this gunk */
+ movb %dh, %ah # max head
+ andb $0x3f, %cl # mask of cylinder gunk
+ movb %cl, %al # max sector (and # sectors)
+
+ popl %edi
+ popl %esi
+ popl %ebx
+ popl %ebp
+ ret
+
--- /dev/null
+/* $OpenBSD: bioskbd.S,v 1.2 1997/03/31 03:12:11 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
+
+/*
+ * int kbd_probe();
+ * probe if keyboard present
+ *
+ */
+ENTRY(kbd_probe)
+
+ movl 1, %eax /* present (: */
+ ret
+
+/*
+# BIOS call "INT 10H Function 0Eh" to write character to console
+# Call with %ah = 0x0e
+# %al = character
+# %bh = page
+# %bl = foreground color
+*/
+ENTRY(kbd_putc)
+ pushl %ebp
+ movl %esp, %ebp
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+
+ movb 8(%ebp), %cl
+
+ call _C_LABEL(prot_to_real)
+
+ movb %cl, %al
+
+ movb $0x0e, %ah
+ xorl %ebx, %ebx
+ incl %ebx
+ int $0x10 # display a byte
+
+ data32
+ call _C_LABEL(real_to_prot)
+
+ popl %edi
+ popl %esi
+ popl %ebx
+ popl %ebp
+ ret
+
+
+/*
+# BIOS call "INT 16H Function 00H" to read character from the keyboard
+# Call with %ah = 0x00
+# Return: %ah = keyboard scan code
+# %al = ASCII character
+*/
+ENTRY(kbd_getc)
+ pushl %ebp
+ movl %esp, %ebp
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+
+ call _C_LABEL(prot_to_real)
+
+ xorl %eax, %eax
+ int $0x16
+
+ movb %al, %bl # real_to_prot uses %eax
+
+ data32
+ call _C_LABEL(real_to_prot)
+
+ movzbl %bl, %eax
+
+ popl %edi
+ popl %esi
+ popl %ebx
+ popl %ebp
+ ret
+
+
+/*
+# BIOS call "INT 16H Function 01H" to check whether a character is pending
+# Call with %ah = 0x01
+# Return:
+# If key waiting to be input:
+# %ah = keyboard scan code
+# %al = ASCII character
+# ZF = clear
+# else
+# ZF = set
+*/
+ENTRY(kbd_ischar)
+ pushl %ebp
+ movl %esp, %ebp
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+
+ call _C_LABEL(prot_to_real)
+
+ movb $0x01, %ah
+ int $0x16
+ setnz %ah
+
+ movb %ah, %bl # real_to_prot uses %eax
+
+ data32
+ call _C_LABEL(real_to_prot)
+
+ movzbl %bl, %eax
+
+ popl %edi
+ popl %esi
+ popl %ebx
+ popl %ebp
+ ret
--- /dev/null
+/* $OpenBSD: biostime.S,v 1.2 1997/03/31 03:12:12 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
+
+/*
+# BIOS call "INT 15H Function 86H" to sleep for a set number of microseconds
+# Call with %ah = 0x86
+# %cx = time interval (high)
+# %dx = time interval (low)
+# Return:
+# If error
+# CF = set
+# else
+# CF = clear
+*/
+ENTRY(usleep)
+ pushl %ebp
+ movl %esp, %ebp
+ pushl %ebx
+
+ movw 8(%ebp), %dx
+ movw 10(%ebp), %cx
+
+ call _C_LABEL(prot_to_real)
+
+ movb $0x86, %ah
+ int $0x15
+ setnc %ah
+
+ movb %ah, %bl # real_to_prot uses %eax
+
+ data32
+ call _C_LABEL(real_to_prot)
+
+ movzbl %bl, %eax
+
+ popl %ebx
+ popl %ebp
+ ret
+
+/*
+#
+#
+*/
+ENTRY(getsecs)
+ ret
+
--- /dev/null
+/* $OpenBSD: dev_i386.c,v 1.2 1997/03/31 03:12:12 weingart Exp $ */
+
+/*
+ * Copyright (c) 1996 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+#include <libsa.h>
+#include "biosdev.h"
+
+/* 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;
+
+ *file = (char *)fname;
+
+ for (i = 0; i < ndevs ; 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;
+
+ return rc;
+}
+
+void
+putchar(c)
+ int c;
+{
+ putc(c);
+ if (c == '\n')
+ putc('\r');
+}
+
+int
+getchar()
+{
+ int c = getc();
+
+ if (c == '\b' || c == '\177')
+ return(c);
+
+ if (c == '\r')
+ c = '\n';
+
+ putchar(c);
+
+ return(c);
+}
--- /dev/null
+
+/* $OpenBSD: exec_i386.c,v 1.1 1997/03/31 03:12:13 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];
+ static int (*x_entry)() = 0;
+
+ x_entry = (void *)startaddr;
+ (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 = start of symbol table (0 if not loaded)
+ * 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] = 0; /* Boot device */
+ argv[3] = 0; /* Cyl offset */
+ argv[4] = (int)esym;
+ argv[5] = (int)startaddr;
+ argv[6] = (int)&x_entry;
+ argv[7] = 0;
+ argv[8] = 0;
+
+ /****************************************************************/
+ /* copy that first page and overwrite any BIOS variables */
+ /****************************************************************/
+ printf("entry point at 0x%x\n", (int)startaddr);
+ startprog(startaddr, argv);
+}
+
--- /dev/null
+/* $OpenBSD: gateA20.c,v 1.2 1997/03/31 03:12:13 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.
+ */
+
+#include <sys/types.h>
+#include <machine/pio.h>
+#include <stand.h>
+
+#define K_RDWR 0x60 /* keyboard data & cmds (read/write) */
+#define K_STATUS 0x64 /* keyboard status */
+#define K_CMD 0x64 /* keybd ctlr command (write-only) */
+
+#define K_OBUF_FUL 0x01 /* output buffer full */
+#define K_IBUF_FUL 0x02 /* input buffer full */
+
+#define KC_CMD_WIN 0xd0 /* read output port */
+#define KC_CMD_WOUT 0xd1 /* write output port */
+#define KB_A20 0xdf /* enable A20,
+ enable output buffer full interrupt
+ enable data line
+ enable clock line */
+
+/*
+ * Gate A20 for high memory
+ */
+void
+gateA20(on)
+ int on;
+{
+#ifdef IBM_L40
+ outb(0x92, 0x2);
+#else IBM_L40
+ while (inb(K_STATUS) & K_IBUF_FUL);
+
+ while (inb(K_STATUS) & K_OBUF_FUL)
+ (void)inb(K_RDWR);
+
+ outb(K_CMD, KC_CMD_WOUT);
+ while (inb(K_STATUS) & K_IBUF_FUL);
+
+ if (on)
+ outb(K_RDWR, KB_A20);
+ else
+ outb(K_RDWR, 0xcd);
+ while (inb(K_STATUS) & K_IBUF_FUL);
+
+ while (inb(K_STATUS) & K_OBUF_FUL)
+ (void)inb(K_RDWR);
+#endif IBM_L40
+}
--- /dev/null
+/* $OpenBSD: libsa.h,v 1.2 1997/03/31 03:12:14 weingart Exp $ */
+
+/*
+ * Copyright (c) 1996 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+#include <stand.h>
+
+void startprog __P((char *addr, int argv[]));
+void gateA20 __P((int on));
+int memsize __P((int which));
+int memprobe __P((void));
+
+extern dev_t bootdev, maj, unit, part;
+extern u_long cyloffset;
+extern u_long ourseg, esym;
+extern int boothowto;
--- /dev/null
+/* $OpenBSD: memprobe.c,v 1.1 1997/03/31 03:12:14 weingart Exp $ */
+
+#include <sys/param.h>
+#include <libsa.h>
+
+
+/* addrprobe(kloc): Probe memory at address kloc * 1024.
+ *
+ * This is a hack, but it seems to work ok. Maybe this is
+ * the *real* way that you are supposed to do probing???
+ */
+static int addrprobe(int kloc){
+ volatile int *loc, i;
+ static int pat[] = {
+ 0x00000000, 0xFFFFFFFF,
+ 0x01010101, 0x10101010,
+ 0x55555555, 0xCCCCCCCC
+ };
+
+ /* Get location */
+ loc = (int *)(kloc * 1024);
+
+ /* Probe address */
+ for(i = 0; i < sizeof(pat)/sizeof(pat[0]); i++){
+ *loc = pat[i];
+ if(*loc != pat[i]) return(1);
+ }
+
+ return(0);
+}
+
+
+/* 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);
+}
+
--- /dev/null
+/* $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
--- /dev/null
+/*-
+ * 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 */
--- /dev/null
+/* $OpenBSD: real_prot.S,v 1.2 1997/03/31 03:12:16 weingart Exp $ */
+
+/*
+ * 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.
+ *
+ * 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 $
+ */
+
+
+/*
+ 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.
+*/
+ .file "real_prot.S"
+
+#include <machine/asm.h>
+#include <machine/specialreg.h>
+
+#define addr32 .byte 0x67
+#define data32 .byte 0x66
+
+ .data
+
+ .globl _codeseg
+ .globl _Gdtr
+#ifndef NO_IDTR
+ .globl _Idtr_prot
+ .globl _Idtr_real
+#endif
+
+ .text
+
+/*
+ *
+ * real_to_prot()
+ * transfer from real mode to protected mode.
+ */
+
+.align 4,0x90
+ENTRY(real_to_prot)
+ /* guarantee that interrupt is disabled when in prot mode */
+ cli
+
+ /* load the gdtr */
+ addr32
+ data32
+ lgdt _C_LABEL(Gdtr)
+
+ /* set the PE bit of CR0 */
+ movl %cr0, %eax
+ data32
+ orl $CR0_PE, %eax
+ movl %eax, %cr0
+
+ /*
+ * make intrasegment jump to flush the processor pipeline and
+ * reload CS register
+ */
+ data32
+ ljmp $0x08, $1f
+
+1: /*
+ * we are in USE32 mode now
+ * set up the protected mode segment registers : DS, SS, ES
+ */
+ movl $0x10, %eax
+ movl %ax, %ds
+ movl %ax, %ss
+ movl %ax, %es
+
+#ifndef NO_IDTR
+ /* load idtr so we can debug */
+ lidt _Idtr_prot
+#endif
+ ret
+
+/*
+ *
+ * prot_to_real()
+ * transfer from protected mode to real mode
+ *
+ */
+
+.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
+
+ /* Change to use16 mode. */
+ ljmp $0x18, $1f
+
+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
+ */
+ movl %cs, %ax
+ movl %ax, %ds
+ movl %ax, %ss
+ movl %ax, %es
+#ifndef NO_IDTR
+ /* load idtr so we can debug */
+ addr32
+ data32
+ lidt _Idtr_real
+#endif
+ sti
+ data32
+ ret
+
--- /dev/null
+/* $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
--- /dev/null
+/* $OpenBSD: startprog.S,v 1.1 1997/03/31 03:12:17 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
+ pushw %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
+
--- /dev/null
+
+
+#include <machine/asm.h>
+#include <sys/syscall.h>
+
+
+#define RSYSCALL(x) \
+ ENTRY(u/**/x); \
+ movl $(SYS_/**/x), %eax; \
+ jmp 1f
+
+ .globl _errno
+
+RSYSCALL(open)
+RSYSCALL(read)
+RSYSCALL(write)
+RSYSCALL(ioctl)
+RSYSCALL(close)
+RSYSCALL(exit)
+
+1:
+ int $0x80
+2: jnc 3f
+ movl %eax, _errno
+ movl $-1, %eax
+ movl $-1, %edx
+3: ret
+
+ENTRY(__syscall)
+ movl $(SYS___syscall), %eax
+ jmp 1b
+
+ENTRY(syscall)
+ popl %ecx /* rta */
+ popl %eax /* syscall number */
+ pushl %ecx
+ int $0x80
+ pushl %ecx
+ jmp 2b
--- /dev/null
+# $OpenBSD: Makefile,v 1.1 1997/03/31 03:12:18 weingart Exp $
+
+.include "../Makefile.inc"
+
+CFLAGS+=-Wall
+
+S = ${.CURDIR}/../../../..
+ZDST=${.OBJDIR}
+.include "${S}/lib/libz/Makefile.inc"
+
+all: ${ZLIB}
+
+.include <bsd.obj.mk>
+.include <bsd.dep.mk>
+.include <bsd.subdir.mk>
+.include <bsd.sys.mk>
+
--- /dev/null
+# $OpenBSD: Makefile,v 1.1 1997/03/31 03:12:19 weingart Exp $
+#
+
+PROG= mbr
+SRCS= mbr.S
+AFLAGS+=-I${.CURDIR} -I${.CURDIR}/../../.. #-Wa,-a
+LDFLAGS=-s -Wl,-T0,-N,-x -nostdlib
+MAN+= mbr.8
+STRIP=
+
+# Uncomment this to make mbr talk to a serial port.
+#CPPFLAGS+=-DSERIAL=0
+
+all:
+ # XXX access(2) says X_OK to root even w/o the x bit set !!!
+ @if [ -x ${.OBJDIR}/${PROG} ]; then \
+ dd if=${.OBJDIR}/${PROG} of=${.OBJDIR}/.tmp ibs=32 skip=1; \
+ mv -f ${.OBJDIR}/.tmp ${.OBJDIR}/${PROG}; \
+ ls -l ${.OBJDIR}/${PROG}; \
+ fi
+
+.include <bsd.prog.mk>
--- /dev/null
+/* $OpenBSD: mbr.S,v 1.1 1997/03/31 03:12:19 weingart Exp $ */
+
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ */
+
+/* Copyright (c) 1996 VaX#n8 (vax@linkdead.paranoia.com)
+ * last edited 9 July 1996
+ * many thanks to Erich Boleyn (erich@uruk.org) for putting up with
+ * all my questions, and for his work on GRUB
+ * You may use this code or fragments thereof in a manner consistent
+ * with the other copyrights as long as you retain my pseudonym and
+ * this copyright notice in the file.
+ */
+
+/* $OpenBSD: mbr.S,v 1.1 1997/03/31 03:12:19 weingart Exp $ */
+
+/*
+ * Copyright (c) 1996 Michael Shalayeff
+ */
+
+/* Copyright (c) 1996 VaX#n8 (vax@linkdead.paranoia.com)
+ * last edited 9 July 1996
+ * many thanks to Erich Boleyn (erich@uruk.org) for putting up with
+ * all my questions, and for his work on GRUB
+ * You may use this code or fragments thereof in a manner consistent
+ * with the other copyrights as long as you retain my pseudonym and
+ * this copyright notice in the file.
+ */
+
+ .file "start.S"
+
+#include <machine/asm.h>
+#include <machine/specialreg.h>
+
+#define data32 .byte 0x66
+#define addr32 .byte 0x67
+
+#define BOOTBIOS 0x7c0 /* segment where we are loaded */
+#define BOOTRELOC 0x7a0 /* segment where to relocate */
+#define SIGNATURE 0xaa55 /* MBR signature */
+#define NUMPART 4 /* number of partitions in partition table */
+#define PARTSZ 16 /* each partition table entry is 16 bytes */
+#define BSDPART 0xA6 /* OpenBSD partition */
+#define OLDBSDPART 0xA5 /* {386,Net,Free}BSD partition */
+#define BOOTABLE 0x80 /* bootable partition */
+
+#ifdef DEBUG
+#define CHAR_S 'S' /* started */
+#define CHAR_L 'L' /* looking up bootable partition */
+#define CHAR_P 'P' /* partition table corrupted */
+#define CHAR_O 'O' /* force OpenBSD load */
+#define CHAR_B 'B' /* loading boot */
+#define CHAR_G 'G' /* jumping to boot */
+
+#define DBGMSG(msg) \
+ movb $msg, %al; \
+ data32; \
+ call chr
+#else /* !DEBUG */
+#define DBGMSG(msg)
+#endif /* !DEBUG */
+
+ .text
+
+ .globl start
+start:
+ movl %cs, %ax
+ # set up stack(%ss:%esp)
+ cli /* disable interrupts w/o stack */
+ movl %ax, %ss
+ data32
+ movl $0xfffc, %esp
+ sti /* we have stack, do ints */
+ /* setup %ds */
+ movl %ax, %ds
+
+ /* relocate the code to leave the space for boot stage */
+ data32
+ movl $BOOTRELOC, %eax
+ movl %ax, %es
+ xorl %si, %si
+ xorl %di, %di
+ xorl %cx, %cx
+ incb %ch /* movl $0x100, %ecx */
+ cld
+ rep
+ movsw
+
+ # jump to the relocated code
+ data32
+ ljmp $BOOTRELOC, $1f
+1:
+ DBGMSG(CHAR_S)
+
+ /* setup %es, %ds */
+ pushl %ds
+ popl %es /* next boot is at the same place as we were loaded */
+ pushl %cs
+ popl %ds /* and %ds is at the %cs */
+
+#ifdef SERIAL
+ # Initialize the serial port to 9600 baud, 8N1.
+ xorl %ax, %ax
+ movb $0xe3, %ax
+ data32
+ movl $SERIAL, %dx
+ int $0x14
+#endif
+
+ /* bootstrap passes us drive number in %dl */
+ testb $0x80, %dl
+ jnz 1f
+
+ /* mbr on floppy ??? */
+ data32
+ movl $fdmbr, %esi
+ data32
+ call message
+
+1: xorl %bx, %bx
+ # cmpw $SIGNATURE, (%bx)
+ .byte 0x81, 0xbf
+ .word signature
+ .word SIGNATURE
+ je 1f
+ DBGMSG(CHAR_P)
+
+ /* find the first active partition */
+1: DBGMSG(CHAR_L)
+ data32
+ movl $pt, %esi
+ data32
+ movl $NUMPART, %cx
+1:
+ # movb (%si), %al
+ .byte 0x8a, 0x44, 0x00
+ cmpb $BOOTABLE, %al
+ je 2f
+ data32
+ addl $PARTSZ, %esi
+ loop 1b
+ jmp 1f /* no bootable -- find $BSDPART */
+
+2: # test if bootable is ours
+ # movb 4(%si), %al # partition type
+ .byte 0x8a, 0x44, 0x04
+ cmpb $BSDPART, %al
+ je found
+
+ /* else: ask! */
+ data32
+ movl $prompt, %esi
+ data32
+ call message
+
+ # BIOS call: read char from kbd
+ # return: %ah == scancode, %al == ascii
+ xorl %ax, %ax
+ int $0x16
+
+ /* load active, if not */
+ cmpb 'n', %al
+ je found
+ cmpb 'N', %al
+ je found
+
+1:
+ /* else: find OpenBSD partition */
+ DBGMSG(CHAR_O)
+ data32
+ movl $pt, %esi
+ data32
+ movl $NUMPART, %ecx
+1:
+ # movb (%si), %al
+ .byte 0x8a, 0x44, 0x00
+ cmpb $BSDPART, %al
+ je found
+ data32
+ addl $PARTSZ, %esi
+ loop 1b
+ data32
+ movl $enoboot, %esi
+err_stop:
+ data32
+ call message
+ cli
+ hlt
+
+found:
+ DBGMSG(CHAR_B)
+ # movb 1(%si), %dh # head
+ .byte 0x8a, 0x74, 0x01
+ # movw 2(%si), %cx # sect, cyl
+ .byte 0x8b, 0x4c, 0x02
+ # movb 4(%si), %al # partition type
+ .byte 0x8a, 0x44, 0x04
+
+/*
+# BIOS call "INT 0x13 Function 0x2" to read sectors from disk into memory
+# Call with %ah = 0x2
+# %al = number of sectors
+# %ch = cylinder
+# %cl = sector
+# %dh = head
+# %dl = drive (0x80 for hard disk, 0x0 for floppy disk)
+# %es:%bx = segment:offset of buffer
+# Return:
+# %al = 0x0 on success; err code on failure
+*/
+ data32
+ movl $0x200 | 1, %eax /* number of blocks */
+ xorl %bx, %bx /* put it at %es:0 */
+ int $0x13
+ data32
+ movl $eread, %si
+ jc err_stop
+
+ DBGMSG(CHAR_G)
+
+ # jump to the new code (%ds:%si is at he right point)
+ data32
+ ljmp $0, $BOOTBIOS << 4
+ /* not reached */
+
+#
+# message: write the error message in %ds:%si to console
+#
+chr:
+/*
+#ifndef SERIAL
+# BIOS call "INT 10H Function 0Eh" to write character to console
+# Call with %ah = 0x0e
+# %al = character
+# %bh = page
+# %bl = foreground color
+#else
+# BIOS call "INT 14H Function 01h" to write character to console
+# Call with %ah = 0x01
+# %al = character
+# %dx = port number
+#endif
+*/
+ pushl %eax
+
+#ifndef SERIAL
+ pushl %ebx
+ movb $0x0e, %ah
+ xorl %bx, %bx
+ incl %bx /* movw $0x01, %bx */
+ int $0x10
+ popl %ebx
+#else
+ pushl %edx
+ movb $0x01, %ah
+ data32
+ movl SERIAL, %dx
+ int $0x14
+ popl %edx
+#endif
+ popl %ax
+ data32
+ ret
+
+/*
+ * Display string
+ */
+message:
+ pushl %ax
+ cld
+1:
+ lodsb # load a byte into %al
+ testb %al, %al
+ jz 1f
+ data32
+ call chr
+ jmp 1b
+1:
+ popl %ax
+ ret
+
+/* error messages */
+
+fdmbr: .asciz "MBR on fd?\r\n"
+eread: .asciz "Read error\r\n"
+enoboot: .asciz "No partition to boot\r\n"
+prompt: .asciz "OpenBSD? "
+
+endofcode:
+ nop
+
+/* throw in a partition table */
+/* flag, head, sec, cyl, type, ehead, esect, ecyl, start, len */
+ . = 0x1be # starting address of partition table
+pt:
+ .byte 0x0,0,0,0,0,0,0,0
+ .long 0,0
+ .byte 0x0,0,0,0,0,0,0,0
+ .long 0,0
+ .byte 0x0,0,0,0,0,0,0,0
+ .long 0,0
+ .byte BOOTABLE,0,1,0,BSDPART,255,255,255
+ .long 0,50000
+/* the last 2 bytes in the sector 0 contain the signature */
+ . = 0x1fe
+signature:
+ .short SIGNATURE
+ . = 0x200
--- /dev/null
+/* $OpenBSD: boot.c,v 1.2 1997/03/31 03:12:03 weingart Exp $ */
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/reboot.h>
+#include <sys/stat.h>
+#include <a.out.h>
+#include <sys/disklabel.h>
+#include <libsa.h>
+#include "cmd.h"
+
+/*
+ * Boot program, loaded by boot block from remaing 7.5K of boot area.
+ * Sifts through disklabel and attempts to load an program image of
+ * a standalone program off the disk. If keyboard is hit during load,
+ * or if an error is encounter, try alternate files.
+ */
+
+char *kernels[] = {
+ "bsd", "bsd.gz",
+ "obsd", "obsd.gz",
+ "bsd.old", "bsd.old.gz",
+ NULL
+};
+
+int retry = 0;
+extern char version[];
+extern dev_t bootdev;
+extern int boothowto;
+int cnvmem, extmem, probemem;
+
+void boot ();
+struct cmd_state cmd;
+
+/*
+ * Boot program... loads /boot out of filesystem indicated by arguements.
+ * We assume an autoboot unless we detect a misconfiguration.
+ */
+void
+boot()
+{
+ register char *bootfile = kernels[0];
+ register int i;
+
+
+ /* Get memory size */
+ cnvmem = memsize(0);
+ extmem = memsize(1);
+ gateA20(1);
+ probemem = memprobe();
+
+
+ /* XXX init cmd here to cut on .data !!! */
+ strncpy(cmd.bootdev,
+#ifdef _TEST
+ "/dev/rfd0a",
+#else
+ "fd(0,a)",
+#endif
+ sizeof(cmd.bootdev));
+ cmd.image[0] = '\0';
+ cmd.cwd[0] = '/';
+ cmd.cwd[1] = '\0';
+ cmd.addr = (void *)0x100000;
+ cmd.timeout = 50000;
+
+ printf("\n>> OpenBSD BOOT: %d/%d (%d) k [%s]\n",
+ cnvmem, extmem, probemem, version);
+
+ for (i = 0;;) {
+
+ strncpy(cmd.image, bootfile, sizeof(cmd.image));
+
+ do {
+ printf("boot> ");
+ } while(!getcmd(&cmd) && !execmd(&cmd));
+
+ sprintf(cmd.path, "%s%s%s", cmd.bootdev, cmd.cwd, bootfile);
+ printf("\nbooting %s: ", cmd.path);
+ exec (cmd.path, cmd.addr, boothowto);
+
+ if(kernels[++i] == NULL)
+ bootfile = kernels[i=0];
+ else
+ bootfile = kernels[i];
+
+ cmd.timeout += 20;
+
+ printf(" failed(%d)\nwill try %s\n", errno, bootfile);
+ }
+}
+
+#ifdef _TEST
+int
+main()
+{
+ boot();
+ return 0;
+}
+#endif
--- /dev/null
+/* $OpenBSD: cmd.c,v 1.1 1997/03/31 03:12:03 weingart Exp $ */
+
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+#include <sys/param.h>
+#include <string.h>
+#include <libsa.h>
+#include "cmd.h"
+
+static struct cmd_table {
+ char *cmd_name;
+ int cmd_id;
+} cmd_table[] = {
+ {"addr", CMD_ADDR},
+ {"boot", CMD_BOOT},
+ {"cd", CMD_CD},
+ {"device", CMD_DEVICE},
+ {"help", CMD_HELP},
+ {"image", CMD_IMAGE},
+ {"ls", CMD_LS},
+ {"nope", CMD_NOPE},
+ {"reboot", CMD_REBOOT},
+ {"set", CMD_SET},
+ {NULL, 0},
+};
+
+extern char version[];
+void ls __P((char *, register struct stat *));
+char skipblnk __P((void));
+
+char cmd_buf[133];
+
+int
+getcmd(cmd)
+ register struct cmd_state *cmd;
+{
+ register struct cmd_table *ct = cmd_table;
+ register char *p = cmd_buf; /* input */
+ register char ch;
+ int len;
+
+ cmd->rc = 0;
+ cmd->argc = 1;
+
+ for (len = cmd->timeout; len-- && !ischar(); );
+
+ if (len < 0) {
+ cmd->cmd = CMD_BOOT;
+ cmd->argv[0] = cmd_table[CMD_BOOT].cmd_name;
+ cmd->argv[1] = NULL;
+ return 0;
+ }
+
+ ch = skipblnk();
+
+ for (len = 0; ch != '\n' &&
+ ch != ' ' && ch != '\t'; len++, ch = getchar())
+ *p++ = ch;
+ *p = '\0';
+
+ if (len == 0 && ch == '\n') {
+ cmd->cmd = CMD_NOPE;
+ return 0;
+ }
+
+ while (ct->cmd_name != NULL &&
+ strncmp(cmd_buf, ct->cmd_name, len))
+ ct++;
+
+ if (ct->cmd_name == NULL) {
+ cmd->cmd = CMD_ERROR;
+ cmd->argv[0] = ct->cmd_name;
+ return 0;
+ }
+
+ cmd->cmd = ct->cmd_id;
+ cmd->argv[0] = ct->cmd_name;
+ if (ct->cmd_name != NULL) {
+ while (ch != '\n') {
+
+ ch = skipblnk();
+
+ if (ch != '\n') {
+ cmd->argv[cmd->argc] = p;
+ *p++ = ch;
+ for (len = 0; (ch = getchar()) != '\n' &&
+ ch != ' ' && ch != '\t'; len++)
+ *p++ = ch;
+ *p++ = '\0';
+ if (len != 0)
+ cmd->argc++;
+ }
+ }
+ cmd->argv[cmd->argc] = NULL;
+ }
+
+ return cmd->rc;
+}
+
+char
+skipblnk()
+{
+ register char ch;
+
+ /* skip blanks */
+ while ((ch = getchar()) != '\n' &&
+ (ch == ' ' || ch == '\t'));
+
+ return ch;
+}
+
+int
+execmd(cmd)
+ register struct cmd_state *cmd;
+{
+ struct stat sb;
+ int fd;
+ register char *p, *q;
+ register struct cmd_table *ct;
+
+ cmd->rc = 0;
+
+ switch (cmd->cmd) {
+
+ case CMD_HELP:
+ printf("commands: ");
+ for (ct = cmd_table; ct->cmd_name != NULL; ct++)
+ printf(" %s", ct->cmd_name);
+ putchar('\n');
+ break;
+
+ case CMD_DEVICE:
+ if (cmd->argc != 2)
+ printf("device: device name required\n");
+ else {
+ strncpy(cmd->bootdev, cmd->argv[1],
+ sizeof(cmd->bootdev));
+ }
+ break;
+
+ case CMD_IMAGE:
+ if (cmd->argc != 2)
+ printf("image: pathname required\n");
+ else {
+ strncpy(cmd->image, cmd->argv[1],
+ sizeof(cmd->image));
+ }
+ break;
+
+ case CMD_ADDR:
+ if (cmd->argc != 2)
+ printf("addr: address required\n");
+ else {
+ register u_long a;
+
+ p = cmd->argv[1];
+ if (p[0] == '0' && p[1] == 'x')
+ p += 2;
+ for (a = 0; *p != '\0'; p++) {
+ a <<= 4;
+ a |= (isdigit(*p)? *p - '0':
+ 10 + tolower(*p) - 'a') & 0xf;
+ }
+
+ cmd->addr = (void *)a;
+ }
+ break;
+
+ case CMD_LS:
+ {
+ q = cmd->argv[1] == NULL? "." : cmd->argv[1];
+ sprintf(cmd->path, "%s%s%s",
+ cmd->bootdev, cmd->cwd, q);
+
+ if (stat(cmd->path, &sb) < 0) {
+ printf("stat(%s): %d\n", cmd->path, errno);
+ break;
+ }
+
+ if ((sb.st_mode & S_IFMT) != S_IFDIR)
+ ls(q, &sb);
+ else {
+ if ((fd = opendir(cmd->path)) < 0) {
+ printf ("opendir(%s): %d\n",
+ cmd->path, errno);
+ break;
+ }
+
+ p = cmd->path + strlen(cmd->path);
+ *p++ = '/';
+ *p = '\0';
+
+ while(readdir(fd, p) >= 0 && *p != '\0') {
+
+ if (stat(cmd->path, &sb) < 0) {
+ printf("stat(%s): %d\n",
+ cmd->path, errno);
+ break;
+ }
+ ls(p, &sb);
+ }
+
+ closedir (fd);
+ }
+ }
+ break;
+
+ case CMD_CD:
+ if (cmd->argc == 1) {
+ cmd->cwd[0] = '/';
+ cmd->cwd[1] = '\0';
+ break;
+ }
+
+ if (cmd->argv[1][0] == '.' && cmd->argv[1][1] == '\0')
+ break;
+
+ if (cmd->argv[1][0] == '.' && cmd->argv[1][1] == '.'
+ && cmd->argv[1][2] == '\0') {
+ /* strrchr(cmd->cwd, '/'); */
+ for (p = cmd->cwd; *++p;);
+ for (p--; *--p != '/';);
+ p[1] = '\0';
+ break;
+ }
+
+ sprintf(cmd->path, "%s%s%s",
+ cmd->bootdev, cmd->cwd, cmd->argv[1]);
+ if (stat(cmd->path, &sb) < 0) {
+ printf("stat(%s): %d\n", cmd->argv[1], errno);
+ break;
+ }
+
+ if (!S_ISDIR(sb.st_mode)) {
+ printf("boot: %s: not a dir\n", cmd->argv[1]);
+ break;
+ }
+
+ /* change dir */
+ for (p = cmd->cwd; *p; p++);
+ for (q = cmd->argv[1]; (*p++ = *q++) != '\0';);
+ if (p[-2] != '/') {
+ p[-1] = '/';
+ p[0] = '\0';
+ }
+ break;
+
+ case CMD_SET:
+ printf("OpenBSD boot version %s\n"
+ "device:\t%s\n"
+ "cwd:\t%s\n"
+ "image:\t%s\n"
+ "load at:\t%p\n"
+ "timeout:\t%d\n",
+ version, cmd->bootdev, cmd->cwd, cmd->image,
+ cmd->addr, cmd->timeout);
+ break;
+
+ case CMD_REBOOT:
+ exit(1);
+ break;
+
+ case CMD_BOOT:
+ return 1;
+ break;
+
+ case CMD_ERROR:
+ default:
+ printf ("%s: invalid command\n", cmd->argv[0]);
+ case CMD_NOPE:
+ break;
+ }
+
+ return cmd->rc;
+}
+
+#define lsrwx(mode,s) \
+ putchar ((mode) & S_IROTH? 'r' : '-'); \
+ putchar ((mode) & S_IWOTH? 'w' : '-'); \
+ putchar ((mode) & S_IXOTH? *(s): (s)[1]);
+
+void
+ls(name, sb)
+ char *name;
+ register struct stat *sb;
+{
+ putchar("-fc-d-b---l-s-w-"[(sb->st_mode & S_IFMT) >> 12]);
+ lsrwx(sb->st_mode >> 6, (sb->st_mode & S_ISUID? "sS" : "x-"));
+ lsrwx(sb->st_mode >> 3, (sb->st_mode & S_ISUID? "sS" : "x-"));
+ lsrwx(sb->st_mode , (sb->st_mode & S_ISTXT? "tT" : "x-"));
+
+ printf (" %s\tuid=%u\tgid=%u\t%lu\n", name, sb->st_uid, sb->st_gid,
+ (u_long)sb->st_size);
+}
+
--- /dev/null
+/* $OpenBSD: cmd.h,v 1.1 1997/03/31 03:12:03 weingart Exp $ */
+
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 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 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.
+ *
+ */
+
+struct cmd_state {
+ char bootdev[16]; /* device */
+ char image[32]; /* image */
+ char cwd[MAXPATHLEN - 32 - 32];
+ void *addr; /* load here */
+ int timeout;
+ char path[MAXPATHLEN]; /* buffer for pathname compose */
+
+ enum { CMD_ADDR, CMD_BOOT, CMD_CD, CMD_DEVICE, CMD_HELP,
+ CMD_IMAGE, CMD_LS, CMD_NOPE, CMD_REBOOT, CMD_SET,
+ CMD_ERROR /* last !!! */ };
+ int cmd;
+ int argc;
+ char *argv[8]; /* XXX i hope this is enough */
+ int rc;
+};
+
+int getcmd __P((register struct cmd_state *));
+int execmd __P((register struct cmd_state *));
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