remove obsolete boot code -- we now use the code in stand/
This commit is contained in:
perry
parent
3add465995
commit
8486362eaf
|
|
@ -1,95 +0,0 @@
|
|||
# $NetBSD: Makefile,v 1.25 1997/08/22 21:53:00 perry Exp $
|
||||
#
|
||||
# WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
|
||||
# This boot program is obsolete. It has been left in place for
|
||||
# reference only. It doesn't even build any longer. Please use the
|
||||
# boot blocks in sys/arch/i386/stand instead!
|
||||
# WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
|
||||
#
|
||||
# Ported to boot 386BSD by Julian Elischer (julian@tfs.com)
|
||||
# September 1992
|
||||
#
|
||||
# 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.
|
||||
#
|
||||
# WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
|
||||
# This boot program is obsolete. It has been left in place for
|
||||
# reference only. It doesn't even build any longer. Please use the
|
||||
# boot blocks in sys/arch/i386/stand instead!
|
||||
# WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
|
||||
|
||||
all:
|
||||
@echo "This boot program is obsolete. It has been left in place for"
|
||||
@echo "reference only. It doesn't even build any longer. Please use"
|
||||
@echo "the boot blocks in sys/arch/i386/stand instead."
|
||||
|
||||
|
||||
S= ${.CURDIR}/../../..
|
||||
|
||||
.PHONY: machine-links
|
||||
machine-links:
|
||||
-rm -f machine && \
|
||||
ln -s ${.CURDIR}/../include machine
|
||||
-rm -f ${MACHINE_ARCH} && \
|
||||
ln -s ${.CURDIR}/../include ${MACHINE_ARCH}
|
||||
|
||||
real-all: machine-links biosboot bootbios
|
||||
|
||||
NOPROG= noprog
|
||||
NOMAN= noman
|
||||
|
||||
CFLAGS= -O6 -D_KERNEL -DI386_CPU -DI486_CPU -DI586_CPU
|
||||
CFLAGS+=-DDO_BAD144 -I. -I${.CURDIR} -I$S -I${.CURDIR}/../..
|
||||
|
||||
# Uncomment this to make the boot block talk to a serial port.
|
||||
#CPPFLAGS+=-DSERIAL
|
||||
|
||||
# start.o should be first
|
||||
OBJS= start.o table.o boot.o asm.o bios.o io.o disk.o sys.o version.o
|
||||
|
||||
boot: ${OBJS}
|
||||
${LD} -Bstatic -e start -N -T 0 -o boot ${OBJS}
|
||||
cp boot boot.sym
|
||||
@strip boot
|
||||
@sh ${.CURDIR}/rmaouthdr boot boot.tmp
|
||||
@mv -f boot.tmp boot
|
||||
@ls -l boot
|
||||
|
||||
biosboot: boot
|
||||
dd if=boot of=biosboot count=1
|
||||
|
||||
bootbios: boot
|
||||
dd if=boot of=bootbios skip=1
|
||||
|
||||
install: biosboot bootbios
|
||||
cp biosboot ${DESTDIR}/usr/mdec/sdboot
|
||||
cp bootbios ${DESTDIR}/usr/mdec/bootsd
|
||||
rm -f ${DESTDIR}/usr/mdec/wdboot
|
||||
ln ${DESTDIR}/usr/mdec/sdboot ${DESTDIR}/usr/mdec/wdboot
|
||||
rm -f ${DESTDIR}/usr/mdec/bootwd
|
||||
ln ${DESTDIR}/usr/mdec/bootsd ${DESTDIR}/usr/mdec/bootwd
|
||||
rm -f ${DESTDIR}/usr/mdec/fdboot
|
||||
ln ${DESTDIR}/usr/mdec/sdboot ${DESTDIR}/usr/mdec/fdboot
|
||||
rm -f ${DESTDIR}/usr/mdec/bootfd
|
||||
ln ${DESTDIR}/usr/mdec/bootsd ${DESTDIR}/usr/mdec/bootfd
|
||||
|
||||
CLEANFILES+=biosboot bootbios boot boot.sym machine ${MACHINE_ARCH}
|
||||
|
||||
.include <bsd.prog.mk>
|
||||
|
|
@ -1,151 +0,0 @@
|
|||
$NetBSD: README.386BSD,v 1.3 1994/10/27 04:14:26 cgd Exp $
|
||||
|
||||
This Boot code is different from the original boot code that came with
|
||||
386BSD in that it uses the BIOS to load the kernel and to provide all i/o
|
||||
services. The advantage ofthis is that the same boot code exactly, can run
|
||||
on any device that is supported by the BIOS. (That's most of them)
|
||||
This is important for the 'generic scsi' project because it means we can
|
||||
write drivers for new scsi adapters without having to develop an new
|
||||
set of boot blocks for each.
|
||||
|
||||
At this point you should read the first part of README.MACH... come back here
|
||||
when you have done that:
|
||||
|
||||
In normal operation, when co-existing with other operating systems, the
|
||||
following operations occur:
|
||||
|
||||
1/ the BIOS loads the first block of the disk (called the Master Boot Record
|
||||
or MBR) and if it has the correct magic numbers, jumps into it:
|
||||
|
||||
2/ The MBR code, looks at the Partition table that is embedded within it,
|
||||
to detirmine which is the partition to boot from. If you are using the os-bs
|
||||
bootblocks (highly recommended) then it will give you a menu to choose from.
|
||||
|
||||
3/ The MBR will load the first record of the selected partition and
|
||||
if it has (the same) magic numbers, jumps into it. In 386bsd this is the
|
||||
first stage boot, (or boot1) it is represented in /usr/mdec by
|
||||
wdboot, asboot and sdboot. If the disk has been set up without DOS partitioning
|
||||
then this block will be at block zero, and will have been loaded directly by
|
||||
the BIOS.
|
||||
|
||||
4/ Boot1 will look at block0 (which might be itself if there are no DOS
|
||||
partitions) and will find the 386bsd partition, and using the information
|
||||
regarding the start position of that partition, will load the next 13 sectors
|
||||
or so, to around 60000 (640k - 256k). and will jump into it at the appropriate
|
||||
entry point. Since boot1 and boot2 were compiled together as one file
|
||||
and then split later, boot1 knows the exact position within boot2 of the
|
||||
entry point.
|
||||
|
||||
Boot 1 also contains a compiled in DOS partition table
|
||||
(in case it is at block 0), which contains a 386bsd partition starting
|
||||
at 0. This ensures that the same code can work whether or not
|
||||
boot1 is at block 0.
|
||||
|
||||
5/ Boot2 asks the user for a boot device, partition and filename, and then
|
||||
loads the MBR of the selected device. This may or may not be the device
|
||||
which was originally used to boot the first MBR. The partition table
|
||||
of the new MBR is searched for a 386bsd partition, and if one is found,
|
||||
that is then in turn searched for the disklabel. This could all be on the
|
||||
second disk at this point, if the user selected it.
|
||||
|
||||
6/On finding the disklabel, boot2 can find the correct unix partition
|
||||
within the 386bsd partition, and using cutdown filesystem code,
|
||||
look for the file to boot (e.g. 386bsd).
|
||||
|
||||
7/ Boot2 loads this file starting at the location specified by the a.out header,
|
||||
(see later) and leaps into it at the location specified in he header.
|
||||
|
||||
if the file does not exist or cannot be loaded, boot2 goes back to step 5.
|
||||
|
||||
386bsd is now running and will hopefully start vm etc. and get to multi-user
|
||||
mode.
|
||||
|
||||
##########################################################################
|
||||
During all these steps, all i/o is performed using the BIOS. This has a number
|
||||
of side effects:
|
||||
|
||||
1/ Since BIOS disk calls are specified in terms of cylinder,head and sector,
|
||||
and the BIOS read the disk information from either the CMOS or from some other
|
||||
location which is un-available to us, we must use the cyl,head,sec information
|
||||
that is given in the MBR, rather than the start address in the MBR, because
|
||||
we cannot guarentee that we can corectly calculate C,H,S from the start address.
|
||||
|
||||
Therefore, the C,H,S information in the MBR must be as correct for this boot
|
||||
to work as it would be for DOS to boot. For example, adaptec BIOS routines
|
||||
assume a layout of 64 heads and 32 sectors giving 1MB per ficticious cylinder.
|
||||
You must use these figures to calculate the correct values. Luckily, the DOS
|
||||
fdisk program will do all this for you if you tell it to give you a DOS
|
||||
partition, and you can change it to a 386BSD partition later. If you use
|
||||
no DOS partitioning, then the compiled in table in Boot1 will do just fine.
|
||||
|
||||
If you want to do it by hand remember that BIOS counts sectors starting at 1.
|
||||
(cylinders and heads start at 0 (??))
|
||||
|
||||
2/ you cannot overwrite the bottom 4k of ram until you have finished ALL
|
||||
bios calls, as BIOS uses this area as scratch memory.
|
||||
|
||||
3/ Since BIOS runs in REAL mode, and Boot2 runs in protected mode,
|
||||
Boot 2 switches back to real mode just before each BIOS call and then
|
||||
back to protected mode on each return. Touch this at your peril.!
|
||||
|
||||
#########################################################################
|
||||
In answering the prompt from Boot2:
|
||||
you can,
|
||||
1/ leave it alone.. it will boot the indicated file from the first
|
||||
partition of the first drive seen by the BIOS (C:)
|
||||
|
||||
2/ enter only "-s" to boot the default to single user mode
|
||||
|
||||
3/ enter only a filename (optionally with -s) to boot that kernel,
|
||||
|
||||
4/ enter a whole line of the form shown in the prompt. This allows you to
|
||||
boot some other partition, possibly on the second drive, as root.
|
||||
|
||||
|
||||
##########################################################################
|
||||
In the case you have two drives the same type (both scsi or bith IDE/ESDI),
|
||||
wd(0,a)xxx
|
||||
will boot xxx from drive 0, a partition.
|
||||
wd(1,a)xxx
|
||||
will boot xxx from drive 1, a partition.
|
||||
|
||||
similarly for sd.
|
||||
|
||||
if you have one wd drive and one scsi drive, then you MUST
|
||||
use device 'hd'
|
||||
|
||||
otherwise the following will happen:
|
||||
|
||||
with wd0 and sd0, you specify sd1 or wd1 to indicate the 2nd drive.
|
||||
it boots the kernel correctly, then tells the kernel to use sd1 as root.
|
||||
you however may not have an sd1, and problems arise.
|
||||
|
||||
hd is special in that the kernel is always told to use unit 0,
|
||||
The correct TYPE of device will be specified too, so the kernel
|
||||
will be told either sd0 or wd0.
|
||||
|
||||
Whether sd or wd is specified to the kernel is read from the disklabel,
|
||||
so ensure that all SCSI disks have type SCSI in their disklabel or the
|
||||
boot code will assume they are ESDI or IDE. (Remember, because it is
|
||||
working through the BIOS it has ho idea what kind of disk it is.
|
||||
|
||||
##########################################################################
|
||||
Installing:
|
||||
The makefile supplied has a target install which will create the
|
||||
files wdboot,bootwd ,sdboot and bootsd in /usr/mdec.
|
||||
BEWARE these will overwrite the existing wdboot and bootwd. (so back
|
||||
them up)
|
||||
|
||||
there are also targets wd and sd which wil only do one of them
|
||||
|
||||
The commented out targets wd0 and sd0 are examples of how to
|
||||
load the new bootblocks, however,make sure you change the
|
||||
device type and label to suit your drive if you uncomment them.
|
||||
(see 'man disklabel')
|
||||
|
||||
If you already have made partitions using the old bootblocks
|
||||
these should install painlessly.
|
||||
|
||||
Before you do this ensure you have a booting floppy with correct
|
||||
disktab and bootblock files on it so that if it doesn't work, you can
|
||||
re-disklabel from the floppy.
|
||||
|
|
@ -1,207 +0,0 @@
|
|||
/* $NetBSD: README.MACH,v 1.5 1994/10/27 04:14:28 cgd Exp $ */
|
||||
|
||||
/*
|
||||
* Ported to boot 386BSD by Julian Elischer, September 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.
|
||||
*/
|
||||
|
||||
********NOTE: This is not all relevant to the 386BSD version**********
|
||||
|
||||
AT386 Protected Mode Bootstrap Loader
|
||||
=====================================
|
||||
|
||||
1. Overview of Startup
|
||||
-------------------
|
||||
|
||||
After the system is rebooted, the BIOS bootstrap routine reads Sector
|
||||
1, Track 0 into memory at location 0000:7C00H. If location 0000:7DFEH
|
||||
(last two bytes of that sector) contains the value AA55H, the BIOS
|
||||
bootstrap routine will transfer control to 0000:7C00H. Otherwise, the
|
||||
boot code in that sector is bad and the boot routine stops.
|
||||
|
||||
For DOS compatibility reason, one extra stage of boot is required if
|
||||
the boot device is a hard disk. The first sector of the hard disk will
|
||||
contain the MOS-DOS boot code and a boot record partition table.
|
||||
When this sector is loaded into 0000:7C00H, it will relocate itself
|
||||
to somewhere else and then load the first sector of the active
|
||||
partition into 0000:7C00H. Both UNIX and DOS use the command "fdisk"
|
||||
to install this first sector into the hard disk and to manipulate
|
||||
the hard disk partitions.
|
||||
|
||||
|
||||
|
||||
2. The First Stage Bootstrap Loader
|
||||
--------------------------------
|
||||
|
||||
After startup, the first stage boot is loaded at 0000:7C00H. This
|
||||
first stage boot will load itself and the second stage boot into
|
||||
memory at location 0000:1000H. For floppy disks, the first cylinder
|
||||
is reserved as the boot cylinder, and the boot code (first and second)
|
||||
will be loaded from there. Currently, only double sided, high density
|
||||
(15 sectors per track) floppies are supported. For hard disks, the
|
||||
first 29 sectors of the active partition is reserved for boot code
|
||||
which will be loaded by the first stage boot. All the disk types
|
||||
recognized by BIOS are supported by this bootstrap loader.
|
||||
|
||||
|
||||
|
||||
3. The Second Stage Bootstrap Loader
|
||||
--------------------------------
|
||||
|
||||
After the boot code is loaded, the control is passed to the second
|
||||
stage bootstrap loader "boot2()". In order to be able to load the
|
||||
big kernel image (bigger than 512K or 640K, depends on the memory
|
||||
configuration), the second stage boot loader will run on the protected
|
||||
mode. This bootstarp loader does not have any stand alone device
|
||||
drivers, all the I/O's are through the BIOS calls. Since the first
|
||||
stage boot code will no longer be used at this moment, the memory
|
||||
location of the first stage boot code (0000:1000H to 0000:1200H) will
|
||||
be used as an internal buffer for BIOS calls. Immediately after this
|
||||
[For NetBSD, we have a different buffer which can hold an entire floppy
|
||||
track.]
|
||||
internal buffer is the GDT table for the second stage boot loader.
|
||||
Since this boot loader needs to switch back and forth between protected
|
||||
and real mode in order to use BIOS calls, the limit of the boot code
|
||||
and boot data segments must not be greater than 64K.
|
||||
|
||||
The boot loader loads the kernel image at memory location above 1 MB
|
||||
to skip the memory hole between 521K/640K and 1MB. After the kernel
|
||||
is loaded, the boot loader stores the information in the stack and
|
||||
then passes control to kernel. Currently, the three information passed
|
||||
fromm the boot loader to the kernel are type of the boot device, size
|
||||
of the base memory and size of the extended memory.
|
||||
|
||||
[NetBSD receives: howto, bootdev, esym.]
|
||||
|
||||
[NetBSD is loaded where-ever the "MByte" bits of the load address specify;
|
||||
normally the load address is F8100000, so it loads at 1MB.]
|
||||
|
||||
|
||||
4. The UNIX Startup
|
||||
----------------
|
||||
|
||||
Since the boot loader loads the kernel image at memory location above
|
||||
1MB, the kernel has to start as protected mode. In addition, the
|
||||
link editor description file (vuifile) has to indicate that
|
||||
the text and data segments start above 1MB. Also, the boot loader
|
||||
passes the infomation to the kernel through the stack.
|
||||
|
||||
[MOST of what is mentionned below is NOT relevant to NetBSD.]
|
||||
|
||||
5. Disk Layout and Bad Block Handling
|
||||
---------------------------------
|
||||
|
||||
The System V/386 Release 3.2 (AT) disk layout will be used as the disk
|
||||
layout for the MACH System on the AT platform.
|
||||
|
||||
This disk layout is as follows:
|
||||
|
||||
* Reserve the first sector of cylinder 0 for the DOS boot record which
|
||||
contains the master boot code (446 bytes) and the partition table.
|
||||
(Refer to DOS Technical Reference Manual page 9-6 to 9-10).
|
||||
|
||||
* Reserve the first 29 sectors of the UNIX partition for the first
|
||||
and the second stage bootstrap.
|
||||
|
||||
* Reserve the 30th sector of the UNIX partition for the pdinfo and
|
||||
the vtoc tables.
|
||||
|
||||
* Reserve the 31st to the 34th sectors of the UNIX partition for the
|
||||
bad track and the bad block mapping tables.
|
||||
|
||||
* Reserve up to 253 consecutive tracks when required, beginning with
|
||||
the 35th sector of the UNIX partition, for alternate tracks.
|
||||
|
||||
* Reserve up to 253 consecutive blocks, beginning with the first
|
||||
sector after the alternate tracks area, for alternate blocks.
|
||||
|
||||
SEC
|
||||
1
|
||||
----------------------------------------------------
|
||||
| X | | CYL 0, TRK 0
|
||||
---------------- .......... --------------------
|
||||
| .......... |
|
||||
---------------- .......... --------------------
|
||||
| .......... |
|
||||
===============================================================
|
||||
^ | BOOTSTRAP | CYL N, TRK M
|
||||
| ----------------------------------------------------
|
||||
| | |30 |31 |32 |33 |34 |
|
||||
---------------------------------------------------- ---
|
||||
U | .......... | ^
|
||||
N ---------------- .......... --------------------- |
|
||||
I | .......... | Alternate Tracks
|
||||
X ---------------- .......... --------------------- |
|
||||
| .......... | V
|
||||
P ---------------------------------------------------- ---
|
||||
A | .......... | ^
|
||||
R ---------------- .......... --------------------- |
|
||||
T | .......... | Alternate Blocks
|
||||
I ---------------- .......... -------------------- |
|
||||
T | .......... | V
|
||||
I ---------------------------------------------------- ---
|
||||
O | Unix root partition starts from here |
|
||||
N ---------------- -----------------
|
||||
| |
|
||||
----------------------------------------------------
|
||||
| |
|
||||
----------------------------------------------------
|
||||
| |
|
||||
| ---------------------------------------------------
|
||||
| | |
|
||||
| ----------------------------------------------------
|
||||
V | |
|
||||
===============================================================
|
||||
| ........ |
|
||||
--------------- ........ --------------
|
||||
| ........ |
|
||||
----------------------------------------------------
|
||||
|
||||
|
||||
The bad block handling mechanism is as follows:
|
||||
|
||||
* Use the alternate track in the alternate tracks area if the
|
||||
track containing the target sector is bad.
|
||||
|
||||
* Use the alternate block in the alternate blocks area if the
|
||||
target sector is bad.
|
||||
|
||||
|
||||
|
||||
|
||||
6. How to make:
|
||||
-----------
|
||||
|
||||
Since the kernel image is loaded above 1 MB, the kernel must start
|
||||
as protected mode. This means that this bootstrap loader will work
|
||||
only when the corresponding changes on the kernel startup code are done.
|
||||
|
||||
The make command to generate this bootstrap loader is:
|
||||
|
||||
make -f boot.mk fdboot (floppy boot loader)
|
||||
make -f boot.mk hdboot (wini boot loader)
|
||||
[To make NetBSD bootblocks "make install" (warning: they will be installed
|
||||
in /usr/mdec.. make backups).]
|
||||
|
|
@ -1,290 +0,0 @@
|
|||
/* $NetBSD: asm.S,v 1.12 1995/03/12 00:10:53 mycroft 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
|
||||
|
||||
CR0_PE = 0x1
|
||||
|
||||
.data
|
||||
.globl _ourseg
|
||||
_ourseg:
|
||||
.long 0
|
||||
|
||||
/*
|
||||
* real_to_prot()
|
||||
* transfer from real mode to protected mode.
|
||||
*/
|
||||
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 $0x18, $xprot
|
||||
|
||||
xprot:
|
||||
# we are in USE32 mode now
|
||||
# set up the protected mode segment registers : DS, SS, ES
|
||||
movl $0x20, %eax
|
||||
movl %ax, %ds
|
||||
movl %ax, %ss
|
||||
movl %ax, %es
|
||||
|
||||
ret
|
||||
|
||||
/*
|
||||
* prot_to_real()
|
||||
* transfer from protected mode to real mode
|
||||
*/
|
||||
ENTRY(prot_to_real)
|
||||
# set up a dummy stack frame for the second seg change.
|
||||
movl _ourseg, %eax
|
||||
pushw %ax
|
||||
movl $xreal, %eax # gas botches pushw $xreal - extra bytes 0, 0
|
||||
pushw %ax # decode to add %al, (%eax) (%al usually 0)
|
||||
|
||||
# Change to use16 mode.
|
||||
ljmp $0x28, $x16
|
||||
|
||||
x16:
|
||||
# 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
|
||||
lret
|
||||
|
||||
xreal:
|
||||
# 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
|
||||
|
||||
sti
|
||||
data32
|
||||
ret
|
||||
|
||||
/*
|
||||
* startprog(phyaddr)
|
||||
* 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 $0 # nominally a cyl offset in the boot.
|
||||
pushl 8(%eax) # argv[2] = bootdev
|
||||
pushl 4(%eax) # argv[1] = howto
|
||||
pushl $0 # dummy 'return' address
|
||||
|
||||
# push on our entry address
|
||||
movl $0x8, %ebx # segment
|
||||
pushl %ebx
|
||||
pushl %ecx
|
||||
|
||||
# convert over the other data segs
|
||||
movl $0x10, %ebx
|
||||
movl %bx, %ds
|
||||
movl %bx, %es
|
||||
|
||||
# convert the PC (and code seg)
|
||||
lret
|
||||
|
||||
/*
|
||||
* pbzero(dst, cnt)
|
||||
* where dst is a virtual address and cnt is the length
|
||||
*/
|
||||
ENTRY(pbzero)
|
||||
pushl %ebp
|
||||
movl %esp, %ebp
|
||||
pushl %es
|
||||
pushl %edi
|
||||
|
||||
cld
|
||||
|
||||
# set %es to point at the flat segment
|
||||
movl $0x10, %eax
|
||||
movl %ax, %es
|
||||
|
||||
movl 8(%ebp), %edi # destination
|
||||
movl 12(%ebp), %ecx # count
|
||||
xorl %eax, %eax # value
|
||||
|
||||
rep
|
||||
stosb
|
||||
|
||||
popl %edi
|
||||
popl %es
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* pcpy(src, dst, cnt)
|
||||
* where src is a virtual address and dst is a physical address
|
||||
*/
|
||||
ENTRY(pcpy)
|
||||
pushl %ebp
|
||||
movl %esp, %ebp
|
||||
pushl %es
|
||||
pushl %esi
|
||||
pushl %edi
|
||||
|
||||
cld
|
||||
|
||||
# set %es to point at the flat segment
|
||||
movl $0x10, %eax
|
||||
movl %ax, %es
|
||||
|
||||
movl 8(%ebp), %esi # source
|
||||
movl 12(%ebp), %edi # destination
|
||||
movl 16(%ebp), %ecx # count
|
||||
|
||||
rep
|
||||
movsb
|
||||
|
||||
popl %edi
|
||||
popl %esi
|
||||
popl %es
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
#ifdef CHECKSUM
|
||||
/*
|
||||
* cksum(src, cnt)
|
||||
* where src is a virtual address and cnt is the length
|
||||
*/
|
||||
ENTRY(cksum)
|
||||
pushl %ebp
|
||||
movl %esp, %ebp
|
||||
pushl %es
|
||||
pushl %edi
|
||||
|
||||
cld
|
||||
|
||||
# set %es to point at the flat segment
|
||||
movl $0x10, %eax
|
||||
movl %ax, %es
|
||||
|
||||
movl 8(%ebp), %edi # destination
|
||||
movl 12(%ebp), %ecx # count
|
||||
shrl $2, %ecx
|
||||
xorl %edx, %edx # value
|
||||
|
||||
1: es
|
||||
lodsl
|
||||
xorl %eax, %edx
|
||||
loop 1b
|
||||
|
||||
movl %edx, %eax
|
||||
|
||||
popl %edi
|
||||
popl %es
|
||||
popl %ebp
|
||||
ret
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
ENTRY(getword)
|
||||
pushl %ebp
|
||||
movl %esp, %ebp
|
||||
pushl %es
|
||||
|
||||
# set %es to point at the flat segment
|
||||
movl $0x10, %eax
|
||||
movl %ax, %es
|
||||
|
||||
movl 8(%ebp), %eax
|
||||
es
|
||||
movl (%eax), %edx
|
||||
|
||||
movl %edx, %eax
|
||||
|
||||
popl %es
|
||||
popl %ebp
|
||||
ret
|
||||
#endif
|
||||
|
|
@ -1,396 +0,0 @@
|
|||
/* $NetBSD: bios.S,v 1.15 1996/06/18 07:17:47 mycroft 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
|
||||
pushl %ebx
|
||||
pushl %esi
|
||||
pushl %edi
|
||||
|
||||
movb 28(%esp), %dh
|
||||
movw 24(%esp), %cx
|
||||
xchgb %ch, %cl # cylinder; the highest 2 bits of cyl is in %cl
|
||||
rorb $2, %cl
|
||||
movb 32(%esp), %al
|
||||
orb %al, %cl
|
||||
incb %cl # sector; sec starts from 1, not 0
|
||||
movb 20(%esp), %dl # device
|
||||
movl 40(%esp), %ebx # offset
|
||||
# prot_to_real will set %es to BOOTSEG
|
||||
|
||||
call _C_LABEL(prot_to_real) # enter real mode
|
||||
|
||||
movb $0x2, %ah # subfunction
|
||||
addr32
|
||||
movb 36(%esp), %al # number of sectors
|
||||
int $0x13
|
||||
setc %bl
|
||||
|
||||
data32
|
||||
call _C_LABEL(real_to_prot) # back to protected mode
|
||||
|
||||
xorl %eax, %eax
|
||||
movb %bl, %al # return value in %ax
|
||||
|
||||
popl %edi
|
||||
popl %esi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
|
||||
#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 /* SERIAL */
|
||||
/*
|
||||
# BIOS call "INT 14H Function 01h" to write character to console
|
||||
# Call with %ah = 0x01
|
||||
# %al = character
|
||||
# %dx = port number
|
||||
*/
|
||||
#endif /* SERIAL */
|
||||
ENTRY(putc)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %esi
|
||||
pushl %edi
|
||||
|
||||
movb 20(%esp), %cl
|
||||
|
||||
call _C_LABEL(prot_to_real)
|
||||
|
||||
movb %cl, %al
|
||||
|
||||
#ifndef SERIAL
|
||||
movb $0x0e, %ah
|
||||
data32
|
||||
movl $0x0001, %ebx
|
||||
int $0x10 # display a byte
|
||||
#else /* SERIAL */
|
||||
movb $0x01, %ah
|
||||
xorl %edx, %edx
|
||||
int $0x14 # display a byte
|
||||
#endif /* SERIAL */
|
||||
|
||||
data32
|
||||
call _C_LABEL(real_to_prot)
|
||||
|
||||
popl %edi
|
||||
popl %esi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
|
||||
#ifndef SERIAL
|
||||
/*
|
||||
# BIOS call "INT 16H Function 00H" to read character from the keyboard
|
||||
# Call with %ah = 0x00
|
||||
# Return: %ah = keyboard scan code
|
||||
# %al = ASCII character
|
||||
*/
|
||||
#else /* SERIAL */
|
||||
/*
|
||||
# BIOS call "INT 14H Function 02H" to read character from the serial port
|
||||
# Call with %ah = 0x02
|
||||
# %dx = port number
|
||||
# Return: %ah = line status
|
||||
# %al = ASCII character
|
||||
*/
|
||||
#endif /* SERIAL */
|
||||
ENTRY(getc)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %esi
|
||||
pushl %edi
|
||||
|
||||
call _C_LABEL(prot_to_real)
|
||||
|
||||
#ifndef SERIAL
|
||||
movb $0x00, %ah
|
||||
int $0x16
|
||||
#else /* SERIAL */
|
||||
movb $0x02, %ah
|
||||
xorl %edx, %edx
|
||||
int $0x14
|
||||
#endif /* SERIAL */
|
||||
|
||||
movb %al, %bl # real_to_prot uses %eax
|
||||
|
||||
data32
|
||||
call _C_LABEL(real_to_prot)
|
||||
|
||||
xorl %eax, %eax
|
||||
movb %bl, %al
|
||||
|
||||
popl %edi
|
||||
popl %esi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
|
||||
#ifndef SERIAL
|
||||
/*
|
||||
# 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
|
||||
*/
|
||||
#else /* SERIAL */
|
||||
/*
|
||||
# BIOS call "INT 14H Function 03H" to check whether a character is pending
|
||||
# Call with %ah = 0x03
|
||||
# %dx = port number
|
||||
# Return: %ah = line status
|
||||
# %al = modem status
|
||||
*/
|
||||
#endif /* SERIAL */
|
||||
ENTRY(ischar)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %esi
|
||||
pushl %edi
|
||||
|
||||
call _C_LABEL(prot_to_real)
|
||||
|
||||
#ifndef SERIAL
|
||||
movb $0x01, %ah
|
||||
int $0x16
|
||||
setnz %ah
|
||||
#else /* SERIAL */
|
||||
movb $0x03, %ah
|
||||
xorl %edx, %edx
|
||||
int $0x14
|
||||
andb $0x1f, %ah
|
||||
#endif /* SERIAL */
|
||||
|
||||
movb %ah, %bl # real_to_prot uses %eax
|
||||
|
||||
data32
|
||||
call _C_LABEL(real_to_prot)
|
||||
|
||||
xorl %eax, %eax
|
||||
movb %bl, %al
|
||||
|
||||
popl %edi
|
||||
popl %esi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
#
|
||||
# get_diskinfo(): return a word that represents the
|
||||
# max number of sectors and heads and drives for this device
|
||||
#
|
||||
*/
|
||||
|
||||
ENTRY(get_diskinfo)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %esi
|
||||
pushl %edi
|
||||
|
||||
movb 20(%esp), %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.
|
||||
*/
|
||||
subb %ah, %ah # %ax = 0
|
||||
movb %ah, %bh # %bh = 0
|
||||
movb $2, %bl # %bl bits 0-3 = drive type, 2 = 1.2M
|
||||
movb $79, %ch # max track
|
||||
movb $15, %cl # max sector
|
||||
movb $1, %dh # max head
|
||||
movb $1, %dl # # floppy drives installed
|
||||
# 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
|
||||
|
||||
/*
|
||||
#
|
||||
# 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
|
||||
pushl %ebx
|
||||
pushl %esi
|
||||
pushl %edi
|
||||
|
||||
movl 20(%esp), %ebx
|
||||
|
||||
call _C_LABEL(prot_to_real) # enter real mode
|
||||
|
||||
testb %bl, %bl
|
||||
data32
|
||||
jnz xext
|
||||
|
||||
int $0x12
|
||||
data32
|
||||
jmp xdone
|
||||
|
||||
xext:
|
||||
movb $0x88, %ah
|
||||
int $0x15
|
||||
|
||||
xdone:
|
||||
movl %eax, %ebx
|
||||
|
||||
data32
|
||||
call _C_LABEL(real_to_prot)
|
||||
|
||||
movl %ebx, %eax
|
||||
|
||||
popl %edi
|
||||
popl %esi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
# 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
|
||||
pushl %ebx
|
||||
pushl %esi
|
||||
pushl %edi
|
||||
|
||||
movw 20(%esp), %dx
|
||||
movw 22(%esp), %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)
|
||||
|
||||
xorl %eax, %eax
|
||||
movb %bl, %al
|
||||
|
||||
popl %edi
|
||||
popl %esi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
|
@ -1,326 +0,0 @@
|
|||
/* $NetBSD: boot.c,v 1.32 1996/08/30 01:34:01 thorpej 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 <sys/param.h>
|
||||
#include <sys/exec.h>
|
||||
#include "boot.h"
|
||||
#include <sys/reboot.h>
|
||||
|
||||
struct exec head;
|
||||
int argv[9];
|
||||
#ifdef CHECKSUM
|
||||
int cflag;
|
||||
#endif
|
||||
char *name;
|
||||
char *names[] = {
|
||||
"/netbsd", "/onetbsd", "/netbsd.old",
|
||||
};
|
||||
#define NUMNAMES (sizeof(names)/sizeof(char *))
|
||||
|
||||
/* Number of seconds that prompt should wait during boot */
|
||||
#define PROMPTWAIT 5
|
||||
|
||||
static void getbootdev __P((int *howto));
|
||||
static void loadprog __P((int howto));
|
||||
|
||||
extern char *version;
|
||||
extern int end;
|
||||
|
||||
void
|
||||
netbsd_boot(drive)
|
||||
int drive;
|
||||
{
|
||||
int loadflags;
|
||||
char *t;
|
||||
|
||||
printf("\n"
|
||||
">> NetBSD BOOT: %d/%d k [%s]\n"
|
||||
"use hd(1,a)/netbsd to boot sd0 when wd0 is also installed\n",
|
||||
argv[7] = memsize(0),
|
||||
argv[8] = memsize(1),
|
||||
version);
|
||||
gateA20(1);
|
||||
for (;;) {
|
||||
/***************************************************************\
|
||||
* As a default set it to the first partition of the first *
|
||||
* floppy or hard drive *
|
||||
\***************************************************************/
|
||||
maj = (drive & 0x80 ? 0 : 2); /* a good first bet */
|
||||
unit = drive & 0x7f;
|
||||
part = 0;
|
||||
|
||||
loadflags = 0;
|
||||
getbootdev(&loadflags);
|
||||
if (openrd()) {
|
||||
printf("Can't find %s\n", name);
|
||||
continue;
|
||||
}
|
||||
loadprog(loadflags);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
loadprog(howto)
|
||||
int howto;
|
||||
{
|
||||
long int startaddr;
|
||||
long int addr; /* physical address.. not directly useable */
|
||||
int i;
|
||||
static int (*x_entry)() = 0;
|
||||
|
||||
read(&head, sizeof(head));
|
||||
if (N_BADMAG(head)) {
|
||||
printf("invalid format\n");
|
||||
return;
|
||||
}
|
||||
|
||||
poff = N_TXTOFF(head);
|
||||
|
||||
startaddr = (int)head.a_entry;
|
||||
addr = (startaddr & 0x00f00000); /* some MEG boundary */
|
||||
printf("Booting %s(%d,%c)%s @ 0x%x\n",
|
||||
devs[maj], unit, 'a'+part, name, addr);
|
||||
|
||||
/*
|
||||
* The +40960 is for memory used by locore.s for the kernel page
|
||||
* table and proc0 stack. XXX
|
||||
*/
|
||||
if ((addr + N_BSSADDR(head) + head.a_bss + 40960) >
|
||||
((memsize(1) + 1024) * 1024)) {
|
||||
printf("kernel too large\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/********************************************************/
|
||||
/* LOAD THE TEXT SEGMENT */
|
||||
/********************************************************/
|
||||
printf("%d", head.a_text);
|
||||
xread(addr, head.a_text);
|
||||
#ifdef CHECKSUM
|
||||
if (cflag)
|
||||
printf("(%x)", cksum(addr, head.a_text));
|
||||
#endif
|
||||
addr += head.a_text;
|
||||
|
||||
/********************************************************/
|
||||
/* Load the Initialised data after the text */
|
||||
/********************************************************/
|
||||
if (N_GETMAGIC(head) == NMAGIC) {
|
||||
i = CLBYTES - (addr & CLOFSET);
|
||||
if (i < CLBYTES) {
|
||||
pbzero(addr, i);
|
||||
addr += i;
|
||||
}
|
||||
}
|
||||
|
||||
printf("+%d", head.a_data);
|
||||
xread(addr, head.a_data);
|
||||
#ifdef CHECKSUM
|
||||
if (cflag)
|
||||
printf("(%x)", cksum(addr, head.a_data));
|
||||
#endif
|
||||
addr += head.a_data;
|
||||
|
||||
/********************************************************/
|
||||
/* Skip over the uninitialised data */
|
||||
/* (but clear it) */
|
||||
/********************************************************/
|
||||
printf("+%d", head.a_bss);
|
||||
pbzero(addr, head.a_bss);
|
||||
|
||||
argv[3] = (addr += head.a_bss);
|
||||
|
||||
/********************************************************/
|
||||
/* copy in the symbol header */
|
||||
/********************************************************/
|
||||
pcpy(&head.a_syms, addr, sizeof(head.a_syms));
|
||||
addr += sizeof(head.a_syms);
|
||||
|
||||
if (head.a_syms == 0)
|
||||
goto nosyms;
|
||||
|
||||
/********************************************************/
|
||||
/* READ in the symbol table */
|
||||
/********************************************************/
|
||||
printf("+[%d", head.a_syms);
|
||||
xread(addr, head.a_syms);
|
||||
#ifdef CHECKSUM
|
||||
if (cflag)
|
||||
printf("(%x)", cksum(addr, head.a_syms));
|
||||
#endif
|
||||
addr += head.a_syms;
|
||||
|
||||
/********************************************************/
|
||||
/* Followed by the next integer (another header) */
|
||||
/* more debug symbols? */
|
||||
/********************************************************/
|
||||
read(&i, sizeof(int));
|
||||
pcpy(&i, addr, sizeof(int));
|
||||
if (i) {
|
||||
i -= sizeof(int);
|
||||
addr += sizeof(int);
|
||||
printf("+%d", i);
|
||||
xread(addr, i);
|
||||
#ifdef CHECKSUM
|
||||
if (cflag)
|
||||
printf("(%x)", cksum(addr, i));
|
||||
#endif
|
||||
addr += i;
|
||||
}
|
||||
|
||||
putchar(']');
|
||||
|
||||
/********************************************************/
|
||||
/* and that many bytes of (debug symbols?) */
|
||||
/********************************************************/
|
||||
nosyms:
|
||||
argv[4] = ((addr+sizeof(int)-1))&~(sizeof(int)-1);
|
||||
|
||||
/********************************************************/
|
||||
/* and note the end address of all this */
|
||||
/********************************************************/
|
||||
printf("=0x%x\n", addr);
|
||||
|
||||
#ifdef CHECKSUM
|
||||
if (cflag)
|
||||
return;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* 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)
|
||||
*/
|
||||
#ifndef ONEDISK
|
||||
if (maj == 2) {
|
||||
printf("\n\nInsert file system floppy\n");
|
||||
getc();
|
||||
}
|
||||
#endif
|
||||
|
||||
startaddr &= 0xffffff;
|
||||
argv[1] = howto;
|
||||
argv[2] = (MAKEBOOTDEV(maj, 0, 0, unit, part));
|
||||
argv[5] = startaddr;
|
||||
argv[6] = (int) &x_entry;
|
||||
argv[0] = 8;
|
||||
|
||||
/****************************************************************/
|
||||
/* copy that first page and overwrite any BIOS variables */
|
||||
/****************************************************************/
|
||||
printf("entry point at 0x%x\n", (int)startaddr);
|
||||
startprog((int)startaddr, argv);
|
||||
}
|
||||
|
||||
static void
|
||||
getbootdev(howto)
|
||||
int *howto;
|
||||
{
|
||||
static int currname = 0;
|
||||
static char namebuf[100]; /* don't allocate on stack! */
|
||||
char c, *ptr;
|
||||
|
||||
name = names[currname];
|
||||
|
||||
printf("Boot: [[[%s(%d,%c)]%s][-adrs]] :- ",
|
||||
devs[maj], unit, 'a'+part, name);
|
||||
#ifdef CHECKSUM
|
||||
cflag = 0;
|
||||
#endif
|
||||
if (awaitkey(PROMPTWAIT)) {
|
||||
gets(namebuf);
|
||||
ptr = namebuf;
|
||||
while (c = *ptr) {
|
||||
while (c == ' ')
|
||||
c = *++ptr;
|
||||
if (!c)
|
||||
return;
|
||||
if (c == '-')
|
||||
while ((c = *++ptr) && c != ' ') {
|
||||
if (c == 'a')
|
||||
*howto |= RB_ASKNAME;
|
||||
else if (c == 'b')
|
||||
*howto |= RB_HALT;
|
||||
#ifdef CHECKSUM
|
||||
else if (c == 'c')
|
||||
cflag = 1;
|
||||
#endif
|
||||
else if (c == 'd')
|
||||
*howto |= RB_KDB;
|
||||
else if (c == 'r')
|
||||
*howto |= RB_DFLTROOT;
|
||||
else if (c == 's')
|
||||
*howto |= RB_SINGLE;
|
||||
}
|
||||
else {
|
||||
name = ptr;
|
||||
while ((c = *++ptr) && c != ' ');
|
||||
if (c)
|
||||
*ptr++ = 0;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
putchar('\n');
|
||||
if (++currname == NUMNAMES)
|
||||
currname = 0;
|
||||
}
|
||||
}
|
||||
|
|
@ -1,43 +0,0 @@
|
|||
/* $NetBSD: boot.h,v 1.7 1996/08/30 01:34:11 thorpej 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 <sys/param.h>
|
||||
#include <sys/time.h>
|
||||
#include <ufs/ufs/quota.h>
|
||||
#include <ufs/ffs/fs.h>
|
||||
#include <ufs/ufs/inode.h>
|
||||
|
||||
extern char *devs[], *name, *iodest;
|
||||
extern struct fs *fs;
|
||||
extern struct inode inode;
|
||||
extern int dosdev, unit, part, maj, boff, poff, bnum, cnt;
|
||||
|
||||
void netbsd_boot __P((int));
|
||||
|
|
@ -1,222 +0,0 @@
|
|||
/* $NetBSD: disk.c,v 1.14 1996/06/18 06:10:33 mycroft 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 "boot.h"
|
||||
#ifdef DO_BAD144
|
||||
#include <sys/dkbad.h>
|
||||
#endif DO_BAD144
|
||||
#include <sys/disklabel.h>
|
||||
|
||||
#define BIOS_DEV_FLOPPY 0x0
|
||||
#define BIOS_DEV_WIN 0x80
|
||||
|
||||
#define BPS 512
|
||||
#define SPT(di) ((di)&0xff)
|
||||
#define HEADS(di) ((((di)>>8)&0xff)+1)
|
||||
|
||||
char *devs[] = {"wd", "hd", "fd", "", "sd", 0};
|
||||
|
||||
#ifdef DO_BAD144
|
||||
struct dkbad dkb;
|
||||
int do_bad144;
|
||||
int bsize;
|
||||
#endif DO_BAD144
|
||||
|
||||
char *iodest;
|
||||
struct fs *fs;
|
||||
struct inode inode;
|
||||
int spt, spc;
|
||||
int dosdev, unit, part, maj, boff, poff, bnum, cnt;
|
||||
|
||||
extern struct disklabel disklabel;
|
||||
extern char iobuf[];
|
||||
|
||||
devopen()
|
||||
{
|
||||
struct dos_partition *dptr;
|
||||
struct disklabel *lp;
|
||||
int i, sector, di;
|
||||
|
||||
di = get_diskinfo(dosdev);
|
||||
spc = (spt = SPT(di)) * HEADS(di);
|
||||
if (dosdev == 2) {
|
||||
boff = 0;
|
||||
part = (spt == 15 ? 3 : 1);
|
||||
} else {
|
||||
Bread(0, iobuf);
|
||||
dptr = (struct dos_partition *)&iobuf[DOSPARTOFF];
|
||||
sector = LABELSECTOR;
|
||||
for (i = 0; i < NDOSPART; i++, dptr++)
|
||||
if (dptr->dp_typ == DOSPTYP_386BSD) {
|
||||
sector = dptr->dp_start + LABELSECTOR;
|
||||
break;
|
||||
}
|
||||
lp = &disklabel;
|
||||
Bread(sector++, lp);
|
||||
if (lp->d_magic != DISKMAGIC) {
|
||||
printf("bad disklabel");
|
||||
return 1;
|
||||
}
|
||||
if (maj == 4 || maj == 0 || maj == 1) {
|
||||
if (lp->d_type == DTYPE_SCSI)
|
||||
maj = 4; /* use scsi as boot dev */
|
||||
else
|
||||
maj = 0; /* must be ESDI/IDE */
|
||||
}
|
||||
boff = lp->d_partitions[part].p_offset;
|
||||
#ifdef DO_BAD144
|
||||
bsize = lp->d_partitions[part].p_size;
|
||||
do_bad144 = 0;
|
||||
if (lp->d_flags & D_BADSECT) {
|
||||
/* this disk uses bad144 */
|
||||
int i;
|
||||
int dkbbnum;
|
||||
struct dkbad *dkbptr;
|
||||
|
||||
/* find the first readable bad144 sector */
|
||||
dkbbnum = lp->d_secperunit - lp->d_nsectors;
|
||||
if (lp->d_secsize > DEV_BSIZE)
|
||||
dkbbnum *= lp->d_secsize / DEV_BSIZE;
|
||||
do_bad144 = 0;
|
||||
for (i = 5; i; i--) {
|
||||
/* XXX: what if the "DOS sector" < 512 bytes ??? */
|
||||
Bread(dkbbnum, iobuf);
|
||||
dkbptr = (struct dkbad *)&iobuf[0];
|
||||
/* XXX why is this not in <sys/dkbad.h> ??? */
|
||||
#define DKBAD_MAGIC 0x4321
|
||||
if (dkbptr->bt_mbz == 0 &&
|
||||
dkbptr->bt_flag == DKBAD_MAGIC) {
|
||||
dkb = *dkbptr; /* structure copy */
|
||||
do_bad144 = 1;
|
||||
break;
|
||||
}
|
||||
dkbbnum += 2;
|
||||
}
|
||||
if (!do_bad144)
|
||||
printf("Bad badsect table\n");
|
||||
else
|
||||
printf("Using bad144 bad sector at %d\n",
|
||||
dkbbnum);
|
||||
}
|
||||
#endif DO_BAD144
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
devread()
|
||||
{
|
||||
int offset, sector = bnum;
|
||||
for (offset = 0; offset < cnt; offset += BPS)
|
||||
Bread(badsect(sector++), iodest + offset);
|
||||
}
|
||||
|
||||
#define I_ADDR ((void *) 0) /* XXX where all reads go */
|
||||
|
||||
/* Read ahead buffer large enough for one track on a 1440K floppy. For
|
||||
* reading from floppies, the bootstrap has to be loaded on a 64K boundary
|
||||
* to ensure that this buffer doesn't cross a 64K DMA boundary.
|
||||
*/
|
||||
#define RA_SECTORS 18
|
||||
static char ra_buf[RA_SECTORS * BPS];
|
||||
static int ra_dev;
|
||||
static int ra_end;
|
||||
static int ra_first;
|
||||
|
||||
Bread(sector, addr)
|
||||
int sector;
|
||||
void *addr;
|
||||
{
|
||||
|
||||
if (dosdev != ra_dev || sector < ra_first || sector >= ra_end) {
|
||||
int cyl, head, sec, nsec;
|
||||
|
||||
cyl = sector / spc;
|
||||
head = (sector % spc) / spt;
|
||||
sec = sector % spt;
|
||||
nsec = spt - sec;
|
||||
if (nsec > RA_SECTORS)
|
||||
nsec = RA_SECTORS;
|
||||
twiddle();
|
||||
while (biosread(dosdev, cyl, head, sec, nsec, ra_buf)) {
|
||||
printf("Error: C:%d H:%d S:%d\n", cyl, head, sec);
|
||||
nsec = 1;
|
||||
twiddle();
|
||||
}
|
||||
ra_dev = dosdev;
|
||||
ra_first = sector;
|
||||
ra_end = sector + nsec;
|
||||
}
|
||||
bcopy(ra_buf + (sector - ra_first) * BPS, addr, BPS);
|
||||
}
|
||||
|
||||
badsect(sector)
|
||||
int sector;
|
||||
{
|
||||
int i;
|
||||
#ifdef DO_BAD144
|
||||
if (do_bad144) {
|
||||
u_short cyl, head, sec;
|
||||
int newsec;
|
||||
struct disklabel *dl = &disklabel;
|
||||
|
||||
/* XXX */
|
||||
/* from wd.c */
|
||||
/* bt_cyl = cylinder number in sorted order */
|
||||
/* bt_trksec is actually (head << 8) + sec */
|
||||
|
||||
/* only remap sectors in the partition */
|
||||
if (sector < boff || sector >= boff + bsize)
|
||||
goto no_remap;
|
||||
|
||||
cyl = sector / dl->d_secpercyl;
|
||||
head = (sector % dl->d_secpercyl) / dl->d_nsectors;
|
||||
sec = sector % dl->d_nsectors;
|
||||
sec += head << 8;
|
||||
|
||||
/* now, look in the table for a possible bad sector */
|
||||
for (i = 0; i < 126; i++) {
|
||||
if (dkb.bt_bad[i].bt_cyl == cyl &&
|
||||
dkb.bt_bad[i].bt_trksec == sec) {
|
||||
/* found same sector */
|
||||
goto remap;
|
||||
} else if (dkb.bt_bad[i].bt_cyl > cyl) {
|
||||
goto no_remap;
|
||||
}
|
||||
}
|
||||
goto no_remap;
|
||||
remap:
|
||||
/* otherwise find replacement sector */
|
||||
newsec = dl->d_secperunit - dl->d_nsectors - i -1;
|
||||
return newsec;
|
||||
}
|
||||
#endif DO_BAD144
|
||||
no_remap:
|
||||
return sector;
|
||||
}
|
||||
|
|
@ -1,240 +0,0 @@
|
|||
/* $NetBSD: io.c,v 1.19 1996/06/18 07:47:04 mycroft 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>
|
||||
|
||||
void gateA20 __P((int on));
|
||||
/*void printf __P((const char *format, int data));*/ /* not quite right XXX */
|
||||
void putchar __P((int c));
|
||||
void gets __P((char *buf));
|
||||
int strcmp __P((const char *s1, const char *s2));
|
||||
void bcopy __P((char *from, char *to, int len));
|
||||
int awaitkey __P((int seconds));
|
||||
void twiddle __P((void));
|
||||
|
||||
#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, 0xdf);
|
||||
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
|
||||
}
|
||||
|
||||
/* printf - only handles %d as decimal, %c as char, %s as string */
|
||||
void
|
||||
printf(format, data)
|
||||
const char *format;
|
||||
int data;
|
||||
{
|
||||
int *dataptr = &data;
|
||||
char c;
|
||||
|
||||
while (c = *format++) {
|
||||
if (c != '%') {
|
||||
putchar(c);
|
||||
continue;
|
||||
}
|
||||
c = *format++;
|
||||
if (c == 'd') {
|
||||
int num = *dataptr++, dig;
|
||||
char buf[10], *ptr = buf;
|
||||
if (num < 0) {
|
||||
num = -num;
|
||||
putchar('-');
|
||||
}
|
||||
do {
|
||||
dig = num % 10;
|
||||
*ptr++ = '0' + dig;
|
||||
} while (num /= 10);
|
||||
do
|
||||
putchar(*--ptr);
|
||||
while (ptr != buf);
|
||||
} else if (c == 'x') {
|
||||
unsigned int num = (unsigned int)*dataptr++, dig;
|
||||
char buf[8], *ptr = buf;
|
||||
do {
|
||||
dig = num & 0xf;
|
||||
*ptr++ = dig > 9 ?
|
||||
'a' + dig - 10 :
|
||||
'0' + dig;
|
||||
} while (num >>= 4);
|
||||
do
|
||||
putchar(*--ptr);
|
||||
while (ptr != buf);
|
||||
} else if (c == 'c') {
|
||||
putchar((char)*dataptr++);
|
||||
} else if (c == 's') {
|
||||
char *ptr = (char *)*dataptr++;
|
||||
while (c = *ptr++)
|
||||
putchar(c);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
putchar(c)
|
||||
int c;
|
||||
{
|
||||
if (c == '\n')
|
||||
putc('\r');
|
||||
putc(c);
|
||||
}
|
||||
|
||||
void
|
||||
gets(buf)
|
||||
char *buf;
|
||||
{
|
||||
char *ptr = buf;
|
||||
|
||||
for (;;) {
|
||||
register int c = getc();
|
||||
if (c == '\n' || c == '\r') {
|
||||
putchar('\n');
|
||||
*ptr = '\0';
|
||||
return;
|
||||
} else if (c == '\b' || c == '\177') {
|
||||
if (ptr > buf) {
|
||||
putchar('\b');
|
||||
putchar(' ');
|
||||
putchar('\b');
|
||||
ptr--;
|
||||
}
|
||||
} else {
|
||||
putchar(c);
|
||||
*ptr++ = c;
|
||||
}
|
||||
}
|
||||
|
||||
/* shouldn't ever be reached; we have to return in the loop. */
|
||||
}
|
||||
|
||||
int
|
||||
strcmp(s1, s2)
|
||||
const char *s1, *s2;
|
||||
{
|
||||
while (*s1 == *s2) {
|
||||
if (!*s1++)
|
||||
return 0;
|
||||
s2++;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
void
|
||||
bcopy(from, to, len)
|
||||
char *from, *to;
|
||||
int len;
|
||||
{
|
||||
if (from > to)
|
||||
while (--len >= 0)
|
||||
*to++ = *from++;
|
||||
else {
|
||||
to += len;
|
||||
from += len;
|
||||
while (--len >= 0)
|
||||
*--to = *--from;
|
||||
}
|
||||
}
|
||||
|
||||
/* Number of milliseconds to sleep during each microsleep */
|
||||
#define NAPTIME 50
|
||||
|
||||
/*
|
||||
* awaitkey takes a number of seconds to wait for a key to be
|
||||
* struck. If a key is struck during the period, it returns true, else
|
||||
* it returns false. It returns (nearly) as soon as the key is
|
||||
* hit. Note that it does something only slightly smarter than busy waiting.
|
||||
*/
|
||||
int
|
||||
awaitkey(seconds)
|
||||
int seconds;
|
||||
{
|
||||
int i;
|
||||
|
||||
/*
|
||||
* We sleep for brief periods (typically 50 milliseconds, set
|
||||
* by NAPTIME), polling the input buffer at the end of
|
||||
* each period.
|
||||
*/
|
||||
for (i = ((seconds*1000)/NAPTIME); i > 0; i--) {
|
||||
/* multiply by 1000 to get microseconds. */
|
||||
usleep(NAPTIME*1000);
|
||||
if (ischar())
|
||||
break;
|
||||
}
|
||||
|
||||
/* If a character was hit, "i" will still be non-zero. */
|
||||
return (i != 0);
|
||||
}
|
||||
|
||||
void
|
||||
twiddle()
|
||||
{
|
||||
static int pos;
|
||||
|
||||
putchar("|/-\\"[pos++ & 3]);
|
||||
putchar('\b');
|
||||
}
|
||||
|
|
@ -1,4 +0,0 @@
|
|||
#!/bin/csh -f
|
||||
# $NetBSD: rmaouthdr,v 1.3 1994/10/27 04:14:39 cgd Exp $
|
||||
|
||||
dd if=$1 of=$2 ibs=32 skip=1 obs=1024b
|
||||
|
|
@ -1,390 +0,0 @@
|
|||
/* $NetBSD: start.S,v 1.14 1996/08/30 01:34:15 thorpej 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
|
||||
|
||||
BOOTSEG = 0x0100 # boot will be loaded here (below 640K)
|
||||
BOOTSTACK = 0xfffc # boot stack
|
||||
SIGNATURE = 0xaa55
|
||||
LOADSZ = 15 # size of unix boot
|
||||
PARTSTART = 0x1be # starting address of partition table
|
||||
NUMPART = 4 # number of partitions in partition table
|
||||
PARTSZ = 16 # each partition table entry is 16 bytes
|
||||
BSDPART = 0xA5 # value of boot_ind, means bootable partition
|
||||
BOOTABLE = 0x80 # value of boot_ind, means bootable partition
|
||||
|
||||
.text
|
||||
.globl start
|
||||
|
||||
ENTRY(boot1)
|
||||
start:
|
||||
# start (aka boot1) is loaded at 0x0:0x7c00 but we want 0x7c0:0
|
||||
# ljmp to the next instruction to adjust %cs
|
||||
data32
|
||||
ljmp $0x7c0, $start1
|
||||
|
||||
start1:
|
||||
# set up %ds
|
||||
movl %cs, %ax
|
||||
movl %ax, %ds
|
||||
|
||||
# set up %ss and %esp
|
||||
data32
|
||||
movl $BOOTSEG, %eax
|
||||
movl %ax, %ss
|
||||
data32
|
||||
movl $BOOTSTACK, %esp
|
||||
|
||||
/*** set up %es, (where we will load boot2 to) ***/
|
||||
movl %ax, %es
|
||||
|
||||
#ifdef SERIAL
|
||||
# Initialize the serial port to 9600 baud, 8N1.
|
||||
data32
|
||||
pushl %edx
|
||||
data32
|
||||
movl $0x00e3, %eax
|
||||
xorl %edx, %edx
|
||||
int $0x14
|
||||
data32
|
||||
popl %edx
|
||||
#endif /* SERIAL */
|
||||
|
||||
#ifdef DEBUG
|
||||
data32
|
||||
movl $one, %esi
|
||||
data32
|
||||
call message
|
||||
#endif /* DEBUG */
|
||||
|
||||
# bootstrap passes us drive number in %dl
|
||||
cmpb $0x80, %dl
|
||||
data32
|
||||
jae hd
|
||||
|
||||
fd:
|
||||
# reset the disk system
|
||||
#ifdef DEBUG
|
||||
data32
|
||||
movl $two, %esi
|
||||
data32
|
||||
call message
|
||||
#endif /* DEBUG */
|
||||
movb $0x00, %ah
|
||||
int $0x13
|
||||
#ifdef DEBUG
|
||||
data32
|
||||
movl $three, %esi
|
||||
data32
|
||||
call message
|
||||
#endif /* DEBUG */
|
||||
data32
|
||||
movl $0x0001, %ecx # cyl 0, sector 1
|
||||
movb $0x00, %dh # head
|
||||
# XXX Override the drive number.
|
||||
movb $0x00, %dl
|
||||
data32
|
||||
jmp load
|
||||
|
||||
hd: /**** load sector 0 into the BOOTSEG ****/
|
||||
#ifdef DEBUG
|
||||
data32
|
||||
movl $four, %esi
|
||||
data32
|
||||
call message
|
||||
#endif /* DEBUG */
|
||||
data32
|
||||
movl $0x0201, %eax
|
||||
xorl %ebx, %ebx # %bx = 0
|
||||
data32
|
||||
movl $0x0001, %ecx
|
||||
#ifdef DEBUG
|
||||
data32
|
||||
movl $five, %esi
|
||||
data32
|
||||
call message
|
||||
#endif /* DEBUG */
|
||||
data32
|
||||
andl $0xff, %edx
|
||||
/*mov $0x0080, %edx*/
|
||||
int $0x13
|
||||
data32
|
||||
jb read_error
|
||||
|
||||
/***# find the first 386BSD partition *****/
|
||||
data32
|
||||
movl $PARTSTART, %ebx
|
||||
data32
|
||||
movl $NUMPART, %ecx
|
||||
again:
|
||||
addr32
|
||||
movb %es:4(%ebx), %al
|
||||
cmpb $BSDPART, %al
|
||||
data32
|
||||
je found
|
||||
data32
|
||||
addl $PARTSZ, %ebx
|
||||
data32
|
||||
loop again
|
||||
data32
|
||||
movl $enoboot, %esi
|
||||
data32
|
||||
jmp err_stop
|
||||
|
||||
|
||||
/*
|
||||
# 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
|
||||
*/
|
||||
|
||||
found:
|
||||
addr32
|
||||
movb %es:1(%ebx), %dh /* head */
|
||||
addr32
|
||||
movl %es:2(%ebx), %ecx /*sect, cyl (+ 2 bytes junk in top word) */
|
||||
|
||||
load:
|
||||
movb $0x2, %ah /* function 2 */
|
||||
movb $LOADSZ, %al /* number of blocks */
|
||||
xorl %ebx, %ebx /* %bx = 0, put it at 0 in the BOOTSEG */
|
||||
int $0x13
|
||||
data32
|
||||
jb read_error
|
||||
|
||||
# ljmp to the second stage boot loader (boot2).
|
||||
# After ljmp, %cs is BOOTSEG and boot1 (512 bytes) will be used
|
||||
# as an internal buffer "intbuf".
|
||||
|
||||
#ifdef DEBUG
|
||||
data32
|
||||
movl $six, %esi
|
||||
data32
|
||||
call message
|
||||
#endif /* DEBUG */
|
||||
|
||||
data32
|
||||
ljmp $BOOTSEG, $_C_LABEL(boot2)
|
||||
|
||||
#
|
||||
# read_error
|
||||
#
|
||||
|
||||
read_error:
|
||||
data32
|
||||
movl $eread, %esi
|
||||
err_stop:
|
||||
data32
|
||||
call message
|
||||
data32
|
||||
jmp stop
|
||||
|
||||
#
|
||||
# message: write the error message in %ds:%esi to console
|
||||
#
|
||||
|
||||
message:
|
||||
#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 /* SERIAL */
|
||||
/*
|
||||
# BIOS call "INT 14H Function 01h" to write character to console
|
||||
# Call with %ah = 0x01
|
||||
# %al = character
|
||||
# %dx = port number
|
||||
*/
|
||||
#endif /* SERIAL */
|
||||
data32
|
||||
pushl %eax
|
||||
data32
|
||||
pushl %ebx
|
||||
data32
|
||||
pushl %edx
|
||||
|
||||
nextb:
|
||||
cld
|
||||
lodsb # load a byte into %al
|
||||
testb %al, %al
|
||||
data32
|
||||
jz done
|
||||
|
||||
#ifndef SERIAL
|
||||
movb $0x0e, %ah
|
||||
data32
|
||||
movl $0x0001, %ebx
|
||||
int $0x10
|
||||
#else /* SERIAL */
|
||||
movb $0x01, %ah
|
||||
xorl %edx, %edx
|
||||
int $0x14
|
||||
#endif /* SERIAL */
|
||||
|
||||
data32
|
||||
jmp nextb
|
||||
|
||||
done:
|
||||
data32
|
||||
popl %edx
|
||||
data32
|
||||
popl %ebx
|
||||
data32
|
||||
popl %eax
|
||||
data32
|
||||
ret
|
||||
|
||||
|
||||
/* Conventional GDT indexes. */
|
||||
BOOT_CS_INDEX = 3
|
||||
BOOT_CS16_INDEX = 5
|
||||
BOOT_DS_INDEX = 4
|
||||
|
||||
ENTRY(boot2)
|
||||
data32
|
||||
xorl %eax, %eax
|
||||
movl %cs, %ax
|
||||
movl %ax, %ds
|
||||
movl %ax, %es
|
||||
addr32
|
||||
data32
|
||||
movl %eax, _C_LABEL(ourseg)
|
||||
data32
|
||||
shll $4, %eax
|
||||
|
||||
/* fix up GDT entries for bootstrap */
|
||||
#define FIXUP(gdt_index) \
|
||||
addr32; \
|
||||
movl %eax, _C_LABEL(Gdt)+(8*gdt_index)+2; /* actually movw %ax */ \
|
||||
addr32; \
|
||||
movb %bl, _C_LABEL(Gdt)+(8*gdt_index)+4
|
||||
|
||||
data32
|
||||
shldl $16, %eax, %ebx
|
||||
FIXUP(BOOT_CS_INDEX)
|
||||
FIXUP(BOOT_CS16_INDEX)
|
||||
FIXUP(BOOT_DS_INDEX)
|
||||
|
||||
/* fix up GDT pointer */
|
||||
data32
|
||||
addl $_C_LABEL(Gdt), %eax
|
||||
addr32
|
||||
data32
|
||||
movl %eax, _C_LABEL(Gdtr)+2
|
||||
|
||||
/* change to protected mode */
|
||||
data32
|
||||
call _C_LABEL(real_to_prot)
|
||||
|
||||
/* clear the bss */
|
||||
movl $_C_LABEL(edata), %edi
|
||||
movl $_C_LABEL(end), %ecx
|
||||
subl %edi, %ecx
|
||||
subb %al, %al
|
||||
rep
|
||||
stosb
|
||||
|
||||
movzbl %dl, %edx /* discard head (%dh) and random high bits */
|
||||
pushl %edx
|
||||
call _C_LABEL(netbsd_boot)
|
||||
|
||||
stop:
|
||||
cli
|
||||
hlt
|
||||
|
||||
|
||||
/* error messages */
|
||||
|
||||
#ifdef DEBUG
|
||||
one: .asciz "1\r\n"
|
||||
two: .asciz "2\r\n"
|
||||
three: .asciz "3\r\n"
|
||||
four: .asciz "4\r\n"
|
||||
five: .asciz "5\r\n"
|
||||
six: .asciz "6\r\n"
|
||||
seven: .asciz "7\r\n"
|
||||
#endif /* DEBUG */
|
||||
eread: .asciz "Read error\r\n"
|
||||
enoboot: .asciz "No bootable partition\r\n"
|
||||
endofcode:
|
||||
/* throw in a partition in case we are block0 as well */
|
||||
/* flag, head, sec, cyl, typ, ehead, esect, ecyl, start, len */
|
||||
. = _C_LABEL(boot1) + PARTSTART
|
||||
.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 */
|
||||
. = _C_LABEL(boot1) + 0x1fe
|
||||
.short SIGNATURE
|
||||
. = _C_LABEL(boot1) + 0x200
|
||||
.globl _disklabel
|
||||
_disklabel:
|
||||
. = _C_LABEL(boot1) + 0x400
|
||||
|
|
@ -1,251 +0,0 @@
|
|||
/* $NetBSD: sys.c,v 1.15 1997/03/29 21:40:19 christos 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 "boot.h"
|
||||
#include <sys/dirent.h>
|
||||
#include <sys/reboot.h>
|
||||
|
||||
char mapbuf[MAXBSIZE], iobuf[MAXBSIZE], fsbuf[SBSIZE];
|
||||
int mapblock = 0;
|
||||
char pathname[MAXPATHLEN + 1];
|
||||
|
||||
void bcopy(), pcpy();
|
||||
|
||||
read(buffer, count)
|
||||
char *buffer;
|
||||
int count;
|
||||
{
|
||||
_read(buffer, count, bcopy);
|
||||
}
|
||||
|
||||
xread(buffer, count)
|
||||
char *buffer;
|
||||
int count;
|
||||
{
|
||||
_read(buffer, count, pcpy);
|
||||
}
|
||||
|
||||
_read(buffer, count, copy)
|
||||
char *buffer;
|
||||
int count;
|
||||
void (*copy)();
|
||||
{
|
||||
int logno, off, size;
|
||||
int cnt2;
|
||||
|
||||
while (count) {
|
||||
off = blkoff(fs, poff);
|
||||
logno = lblkno(fs, poff);
|
||||
cnt2 = size = blksize(fs, &inode, logno);
|
||||
bnum = fsbtodb(fs, block_map(logno)) + boff;
|
||||
cnt = cnt2;
|
||||
iodest = iobuf;
|
||||
devread();
|
||||
size -= off;
|
||||
if (size > count)
|
||||
size = count;
|
||||
copy(iodest + off, buffer, size);
|
||||
buffer += size;
|
||||
count -= size;
|
||||
poff += size;
|
||||
}
|
||||
}
|
||||
|
||||
find(path)
|
||||
char *path;
|
||||
{
|
||||
char *rest, ch;
|
||||
int block, off, loc, ino = ROOTINO, parent;
|
||||
struct dirent *dp;
|
||||
int nlinks = 0;
|
||||
|
||||
loop:
|
||||
iodest = iobuf;
|
||||
cnt = fs->fs_bsize;
|
||||
bnum = fsbtodb(fs, ino_to_fsba(fs,ino)) + boff;
|
||||
devread();
|
||||
bcopy(&((struct dinode *)iodest)[ino_to_fsbo(fs,ino)],
|
||||
&inode.i_din,
|
||||
sizeof(struct dinode));
|
||||
if ((inode.i_mode & IFMT) == IFLNK) {
|
||||
int link_len = inode.i_size;
|
||||
int len = strlen(path);
|
||||
|
||||
if (link_len + len > MAXPATHLEN ||
|
||||
++ nlinks > MAXSYMLINKS)
|
||||
return 0;
|
||||
bcopy(path, &pathname[link_len], len + 1);
|
||||
if (link_len < fs->fs_maxsymlinklen)
|
||||
bcopy(inode.i_shortlink, pathname, link_len);
|
||||
else {
|
||||
poff = 0;
|
||||
read(pathname,link_len);
|
||||
}
|
||||
path = pathname;
|
||||
if (*pathname == '/')
|
||||
ino = ROOTINO;
|
||||
else
|
||||
ino = parent;
|
||||
goto loop;
|
||||
}
|
||||
if (!*path)
|
||||
return 1;
|
||||
while (*path == '/')
|
||||
path++;
|
||||
if (!inode.i_size || ((inode.i_mode & IFMT) != IFDIR))
|
||||
return 0;
|
||||
parent = ino;
|
||||
for (rest = path; (ch = *rest) && ch != '/'; rest++);
|
||||
*rest = 0;
|
||||
loc = 0;
|
||||
do {
|
||||
if (loc >= inode.i_size)
|
||||
return 0;
|
||||
if (!(off = blkoff(fs, loc))) {
|
||||
int cnt2;
|
||||
block = lblkno(fs, loc);
|
||||
cnt2 = blksize(fs, &inode, block);
|
||||
bnum = fsbtodb(fs, block_map(block)) + boff;
|
||||
cnt = cnt2;
|
||||
iodest = iobuf;
|
||||
devread();
|
||||
}
|
||||
dp = (struct dirent *)(iodest + off);
|
||||
if (dp->d_reclen < 8) {
|
||||
printf("directory corrupted (possible geometry mismatch)\n");
|
||||
return 0;
|
||||
}
|
||||
loc += dp->d_reclen;
|
||||
} while (!dp->d_fileno || strcmp(path, dp->d_name));
|
||||
ino = dp->d_fileno;
|
||||
*(path = rest) = ch;
|
||||
goto loop;
|
||||
}
|
||||
|
||||
block_map(file_block)
|
||||
int file_block;
|
||||
{
|
||||
if (file_block < NDADDR)
|
||||
return(inode.i_db[file_block]);
|
||||
if ((bnum = fsbtodb(fs, inode.i_ib[0]) + boff) != mapblock) {
|
||||
iodest = mapbuf;
|
||||
cnt = fs->fs_bsize;
|
||||
devread();
|
||||
mapblock = bnum;
|
||||
}
|
||||
return (((int *)mapbuf)[(file_block - NDADDR) % NINDIR(fs)]);
|
||||
}
|
||||
|
||||
openrd()
|
||||
{
|
||||
char **devp, *cp = name;
|
||||
/*******************************************************\
|
||||
* If bracket given look for preceding device name *
|
||||
\*******************************************************/
|
||||
while (*cp && *cp!='(')
|
||||
cp++;
|
||||
if (!*cp) {
|
||||
cp = name;
|
||||
} else {
|
||||
if (cp != name) {
|
||||
*cp = '\0';
|
||||
for (devp = devs; *devp; devp++)
|
||||
if (!strcmp(name, *devp))
|
||||
break;
|
||||
if (!*devp) {
|
||||
printf("Unknown device\n");
|
||||
return 1;
|
||||
}
|
||||
maj = devp-devs;
|
||||
}
|
||||
/*******************************************************\
|
||||
* Look inside brackets for unit number, and partition *
|
||||
\*******************************************************/
|
||||
cp++;
|
||||
if (*cp >= '0' && *cp <= '9') {
|
||||
unit = *cp++ - '0';
|
||||
#if 0
|
||||
/* Modern bios'es can boot from disks higher than d */
|
||||
if (unit > 1) {
|
||||
printf("Bad unit\n");
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
if (!*cp || (*cp == ',' && !*++cp))
|
||||
return 1;
|
||||
if (*cp >= 'a' && *cp <= 'p')
|
||||
part = *cp++ - 'a';
|
||||
while (*cp && *cp++!=')') ;
|
||||
if (!*cp)
|
||||
return 1;
|
||||
}
|
||||
if (maj == 1) {
|
||||
dosdev = unit | 0x80;
|
||||
unit = 0;
|
||||
} else if (maj == 0 || maj == 4)
|
||||
dosdev = unit | 0x80;
|
||||
else if (maj == 2)
|
||||
dosdev = unit;
|
||||
inode.i_dev = dosdev;
|
||||
/***********************************************\
|
||||
* Now we know the disk unit and part, *
|
||||
* Load disk info, (open the device) *
|
||||
\***********************************************/
|
||||
if (devopen())
|
||||
return 1;
|
||||
|
||||
/***********************************************\
|
||||
* Load Filesystem info (mount the device) *
|
||||
\***********************************************/
|
||||
iodest = (char *)(fs = (struct fs *)fsbuf);
|
||||
cnt = SBSIZE;
|
||||
bnum = SBLOCK + boff;
|
||||
devread();
|
||||
|
||||
/*
|
||||
* Deal with old file system format. This is borrowed from
|
||||
* ffs_oldfscompat() in ufs/ffs/ffs_vfsops.c.
|
||||
*/
|
||||
if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */
|
||||
fs->fs_qbmask = ~fs->fs_bmask; /* XXX */
|
||||
fs->fs_qfmask = ~fs->fs_fmask; /* XXX */
|
||||
} /* XXX */
|
||||
|
||||
/***********************************************\
|
||||
* Find the actual FILE on the mounted device *
|
||||
\***********************************************/
|
||||
if (!find(cp))
|
||||
return 1;
|
||||
|
||||
poff = 0;
|
||||
name = cp;
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,96 +0,0 @@
|
|||
/* $NetBSD: table.c,v 1.6 1994/10/27 04:14:42 cgd 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.
|
||||
*/
|
||||
|
||||
/* Segment Descriptor
|
||||
*
|
||||
* 31 24 19 16 7 0
|
||||
* ------------------------------------------------------------
|
||||
* | | |B| |A| | | |1|0|E|W|A| |
|
||||
* | BASE 31..24 |G|/|0|V| LIMIT |P|DPL| TYPE | BASE 23:16 |
|
||||
* | | |D| |L| 19..16| | |1|1|C|R|A| |
|
||||
* ------------------------------------------------------------
|
||||
* | | |
|
||||
* | BASE 15..0 | LIMIT 15..0 |
|
||||
* | | |
|
||||
* ------------------------------------------------------------
|
||||
*/
|
||||
|
||||
struct seg_desc {
|
||||
unsigned short limit_15_0;
|
||||
unsigned short base_15_0;
|
||||
unsigned char base_23_16;
|
||||
unsigned char p_dpl_type;
|
||||
unsigned char g_b_a_limit;
|
||||
unsigned char base_31_24;
|
||||
};
|
||||
|
||||
#define RUN 0 /* not really 0, but filled in at boot time */
|
||||
|
||||
struct seg_desc Gdt[] = {
|
||||
{0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, /* 0x0 : null */
|
||||
{0xFFFF, 0x0, 0x0, 0x9F, 0xCF, 0x0}, /* 0x08 : kernel code */
|
||||
/* 0x9E? */
|
||||
{0xFFFF, 0x0, 0x0, 0x93, 0xCF, 0x0}, /* 0x10 : kernel data */
|
||||
/* 0x92? */
|
||||
{0xFFFF, RUN, RUN, 0x9E, 0xCF, 0x0}, /* 0x18 : boot code */
|
||||
{0xFFFF, RUN, RUN, 0x92, 0xCF, 0x0}, /* 0x20 : boot data */
|
||||
{0xFFFF, RUN, RUN, 0x9E, 0x0, 0x0}, /* 0x28 : boot code, 16 bits */
|
||||
};
|
||||
|
||||
struct pseudo_desc {
|
||||
unsigned short limit;
|
||||
unsigned short base_low;
|
||||
unsigned short base_high;
|
||||
};
|
||||
|
||||
struct pseudo_desc Gdtr = { sizeof Gdt - 1, RUN, RUN };
|
||||
|
|
@ -1,60 +0,0 @@
|
|||
/* $NetBSD: version.c,v 1.29 1996/06/18 07:51:26 mycroft Exp $ */
|
||||
|
||||
/*
|
||||
* NOTE ANY CHANGES YOU MAKE TO THE BOOTBLOCKS HERE.
|
||||
*
|
||||
* 1.28 -> 1.29
|
||||
* various code cleanup. (mycroft)
|
||||
*
|
||||
* 1.27 -> 1.28
|
||||
* fix gets to use real timeout instead of loop and do
|
||||
* a little cleanup, and add some prototypes. A lot more
|
||||
* needs to be done here. (perry)
|
||||
*
|
||||
* 1.26 -> 1.27
|
||||
* size reduction and code cleanup. (mycroft)
|
||||
*
|
||||
* 1.25 -> 1.26
|
||||
* size reduction and code cleanup. (mycroft)
|
||||
*
|
||||
* 1.24 -> 1.25
|
||||
* add support for serial consoles. (mycroft)
|
||||
*
|
||||
* 1.23 -> 1.24
|
||||
* change RCS ID format. NOW NEED TO UPDATE STRING BELOW
|
||||
* BY HAND.
|
||||
*
|
||||
* 1.22 -> 1.23, 1.21.2.2
|
||||
* fix problem with empty symbol tables. (mycroft)
|
||||
*
|
||||
* 1.21 -> 1.22, 1.21.2.1
|
||||
* fix compatibility with pre-4.4 file systems. (mycroft)
|
||||
*
|
||||
* 1.20 -> 1.21
|
||||
* update for 4.4-Lite file system includes and macros (cgd)
|
||||
*
|
||||
* 1.19 -> 1.20
|
||||
* display options in std. format, more changes for size (cgd)
|
||||
*
|
||||
* 1.18 -> 1.19
|
||||
* add a '-r' option, to specify RB_DFLTROOT (cgd)
|
||||
*
|
||||
* 1.17 -> 1.18
|
||||
* removed some more code we don't need for BDB. (mycroft)
|
||||
*
|
||||
* 1.16 -> 1.17
|
||||
* removed with prejudice the extra buffer for xread(), changes
|
||||
* to make the code smaller, and general cleanup. (mycroft)
|
||||
*
|
||||
* 1.15 -> 1.16
|
||||
* reduce BUFSIZE to 4k, because that's fixed the
|
||||
* boot problems, for some. (cgd)
|
||||
*
|
||||
* 1.14 -> 1.15
|
||||
* seperated 'version' out from boot.c (cgd)
|
||||
*
|
||||
* 1.1 -> 1.14
|
||||
* look in boot.c revision logs
|
||||
*/
|
||||
|
||||
char *version = "1.29";
|
||||
Loading…
Reference in New Issue