mirror of
https://github.com/freebsd/freebsd-src
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152 lines
5 KiB
C
152 lines
5 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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#include "disk.h"
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#ifdef LOADER_ZFS_SUPPORT
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#include "libzfs.h"
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#endif
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/*
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* i386 fully-qualified device descriptor.
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*/
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struct i386_devdesc
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{
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union
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{
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struct devdesc dd;
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struct disk_devdesc disk;
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#ifdef LOADER_ZFS_SUPPORT
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struct zfs_devdesc zfs;
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#endif
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};
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};
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/*
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* relocater trampoline support.
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*/
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struct relocate_data {
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uint32_t src;
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uint32_t dest;
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uint32_t size;
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};
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extern void relocater(void);
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/*
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* The relocater_data[] is fixed size array allocated in relocater_tramp.S
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*/
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extern struct relocate_data relocater_data[];
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extern uint32_t relocater_size;
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extern uint16_t relocator_ip;
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extern uint16_t relocator_cs;
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extern uint16_t relocator_ds;
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extern uint16_t relocator_es;
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extern uint16_t relocator_fs;
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extern uint16_t relocator_gs;
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extern uint16_t relocator_ss;
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extern uint16_t relocator_sp;
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extern uint32_t relocator_esi;
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extern uint32_t relocator_eax;
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extern uint32_t relocator_ebx;
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extern uint32_t relocator_edx;
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extern uint32_t relocator_ebp;
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extern uint16_t relocator_a20_enabled;
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int i386_getdev(void **vdev, const char *devspec, const char **path);
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char *i386_fmtdev(void *vdev);
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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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#define MAXBDDEV MAXDEV
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#include <readin.h>
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/* exported devices XXX rename? */
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extern struct devsw bioscd;
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extern struct devsw biosfd;
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extern struct devsw bioshd;
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extern struct devsw pxedisk;
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extern struct fs_ops pxe_fsops;
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int bc_add(int biosdev); /* Register CD booted from. */
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uint32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */
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int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */
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int bd_unit2bios(struct i386_devdesc *); /* xlate biosdisk -> BIOS device */
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int bd_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */
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ssize_t i386_copyin(const void *src, vm_offset_t dest, const size_t len);
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ssize_t i386_copyout(const vm_offset_t src, void *dest, const size_t len);
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ssize_t i386_readin(readin_handle_t fd, vm_offset_t dest, const size_t len);
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struct preloaded_file;
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void bios_addsmapdata(struct preloaded_file *);
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void bios_getsmap(void);
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void bios_getmem(void);
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extern uint32_t bios_basemem; /* base memory in bytes */
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extern uint32_t bios_extmem; /* extended memory in bytes */
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extern vm_offset_t memtop; /* last address of physical memory + 1 */
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extern vm_offset_t memtop_copyin; /* memtop less heap size for the cases */
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/* when heap is at the top of */
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/* extended memory; for other cases */
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/* just the same as memtop */
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extern uint32_t high_heap_size; /* extended memory region available */
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extern vm_offset_t high_heap_base; /* for use as the heap */
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/* 16KB buffer space for real mode data transfers. */
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#define BIO_BUFFER_SIZE 0x4000
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void *bio_alloc(size_t size);
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void bio_free(void *ptr, size_t size);
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/*
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* Values for width parameter to biospci_{read,write}_config
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*/
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#define BIOSPCI_8BITS 0
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#define BIOSPCI_16BITS 1
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#define BIOSPCI_32BITS 2
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void biospci_detect(void);
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int biospci_find_devclass(uint32_t class, int index, uint32_t *locator);
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int biospci_read_config(uint32_t locator, int offset, int width, uint32_t *val);
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uint32_t biospci_locator(int8_t bus, uint8_t device, uint8_t function);
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int biospci_write_config(uint32_t locator, int offset, int width, uint32_t val);
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void biosacpi_detect(void);
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int i386_autoload(void);
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void bi_load_vbe_data(struct preloaded_file *kfp);
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int bi_getboothowto(char *kargs);
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void bi_setboothowto(int howto);
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int bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip,
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vm_offset_t *modulep, vm_offset_t *kernend);
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int bi_load64(char *args, vm_offset_t *modulep,
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vm_offset_t *kernend, int add_smap);
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void pxe_enable(void *pxeinfo);
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