627249c7b1
for our use. Use the same search order for BIOS memory size functions as the kernel will later use. Allow the loader to use all of the detected physical memory (this will greatly help people trying to load enormous memory disk images). More correctly handle running out of memory when loading an object. Use the end of base memory for the top of the heap, rather than blindly hoping that there is 384k left. Add copyrights to a couple of files I forgot.
89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* i386 fully-qualified device descriptor.
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* Note, this must match the 'struct devdesc' declaration
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* in bootstrap.h.
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*/
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struct i386_devdesc
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{
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struct devsw *d_dev;
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int d_type;
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union
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{
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struct
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{
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int unit;
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int slice;
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int partition;
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void *data;
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} biosdisk;
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struct
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{
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int unit; /* XXX net layer lives over these? */
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} netif;
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} d_kind;
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};
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extern int i386_getdev(void **vdev, const char *devspec, const char **path);
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extern char *i386_fmtdev(void *vdev);
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extern int i386_setcurrdev(struct env_var *ev, int flags, void *value);
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extern struct devdesc currdev; /* our current device */
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#define MAXDEV 31 /* maximum number of distinct devices */
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/* exported devices XXX rename? */
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extern struct devsw biosdisk;
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u_int32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */
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extern int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */
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extern int bd_unit2bios(int unit); /* xlate biosdisk unit -> BIOS device */
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extern int bd_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */
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extern int i386_copyin(void *src, vm_offset_t dest, size_t len);
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extern int i386_copyout(vm_offset_t src, void *dest, size_t len);
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extern int i386_readin(int fd, vm_offset_t dest, size_t len);
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extern void bios_getmem(void);
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extern u_int32_t bios_basemem; /* base memory in bytes */
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extern u_int32_t bios_extmem; /* extended memory in bytes */
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extern vm_offset_t memtop;
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extern void gateA20(void);
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extern int i386_autoload(void);
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extern int bi_getboothowto(char *kargs);
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extern vm_offset_t bi_copyenv(vm_offset_t addr);
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extern int bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip);
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