freebsd-dev/sys/boot/i386/libi386/libi386.h

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/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
1999-08-28 01:08:13 +00:00
* $FreeBSD$
*/
/*
* i386 fully-qualified device descriptor.
* Note, this must match the 'struct devdesc' declaration
* in bootstrap.h.
*/
struct i386_devdesc
{
struct devsw *d_dev;
int d_type;
union
{
struct
{
int unit;
int slice;
int partition;
void *data;
} biosdisk;
struct
{
int unit; /* XXX net layer lives over these? */
} netif;
} d_kind;
};
int i386_getdev(void **vdev, const char *devspec, const char **path);
char *i386_fmtdev(void *vdev);
int i386_setcurrdev(struct env_var *ev, int flags, void *value);
extern struct devdesc currdev; /* our current device */
#define MAXDEV 31 /* maximum number of distinct devices */
/* exported devices XXX rename? */
extern struct devsw biosdisk;
Mega i386 loader commit. - Don't hard code 0x10000 as the entry point for the loader. Instead add src/sys/boot/i386/Makefile.inc which defines a make variable with the entry point for the loader. Move the loader's entry point up to 0x20000, which makes PXE happy. - Don't try to use cpp to parse btxldr for the optional BTXLDR_VERBOSE, instead use m4 to achieve this. Also, add a BTXLDR_VERBOSE knob in the btxldr Makefile to turn this option on. - Redo parts of cdldr's Makefile so that it now builds and installs cdboot instead of having i386/loader/Makefile do that. Also, add in some more variables to make the pxeldr Makefile almost identical and thus to ease maintainability. - Teach cdldr about the a.out format. Cdldr now parsers the a.out header of the loader binary and relocates it based on that. The entry point of the loader no longer has to be hardcoded into cdldr. Also, the boot info table from mkisofs is no longer required to get a useful cdboot. - Update the lsdev function for BIOS disks to parse other file systems (such as DOS FAT) that we currently support. This is still buggy as it assumes that a floppy with a DOS boot sector actually has a MBR and parses it as such. I'll be fixing this in the future. - The biggie: Add in support for booting off of PXE-enabled network adapters. Currently, we use the TFTP API provided by the PXE BIOS. Eventually we will switch to using the low-level NIC driver thus allowing both TFTP and NFS to be used, but for now it's just TFTP. Submitted by: ps, alfred Testing by: Benno Rice <benno@netizen.com.au>
2000-03-28 01:19:53 +00:00
extern struct devsw pxedisk;
extern struct fs_ops pxe_fsops;
u_int32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */
int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */
int bd_unit2bios(int unit); /* xlate biosdisk unit -> BIOS device */
int bd_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */
ssize_t i386_copyin(const void *src, vm_offset_t dest, const size_t len);
ssize_t i386_copyout(const vm_offset_t src, void *dest, const size_t len);
ssize_t i386_readin(const int fd, vm_offset_t dest, const size_t len);
void bios_getmem(void);
extern u_int32_t bios_basemem; /* base memory in bytes */
extern u_int32_t bios_extmem; /* extended memory in bytes */
extern vm_offset_t memtop;
void biosacpi_detect();
void gateA20(void);
int i386_autoload(void);
int bi_getboothowto(char *kargs);
vm_offset_t bi_copyenv(vm_offset_t addr);
int bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip);
void pxe_enable(void *pxeinfo);