libi386.h revision 285726 
1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/10/sys/boot/i386/libi386/libi386.h 285726 2015-07-20 22:14:55Z allanjude $
27 */
28
29
30/*
31 * i386 fully-qualified device descriptor.
32 * Note, this must match the 'struct devdesc' declaration
33 * in bootstrap.h and also with struct zfs_devdesc for zfs
34 * support.
35 */
36struct i386_devdesc
37{
38    struct devsw	*d_dev;
39    int			d_type;
40    int			d_unit;
41    union
42    {
43	struct
44	{
45	    void	*data;
46	    int		slice;
47	    int		partition;
48	    off_t	offset;
49	} biosdisk;
50	struct
51	{
52	    void	*data;
53	} bioscd;
54	struct
55	{
56	    void	*data;
57	    uint64_t	pool_guid;
58	    uint64_t	root_guid;
59	} zfs;
60    } d_kind;
61};
62
63int	i386_getdev(void **vdev, const char *devspec, const char **path);
64char	*i386_fmtdev(void *vdev);
65int	i386_setcurrdev(struct env_var *ev, int flags, const void *value);
66
67extern struct devdesc	currdev;	/* our current device */
68
69#define MAXDEV		31		/* maximum number of distinct devices */
70#define MAXBDDEV	MAXDEV
71
72/* exported devices XXX rename? */
73extern struct devsw bioscd;
74extern struct devsw biosdisk;
75extern struct devsw pxedisk;
76extern struct fs_ops pxe_fsops;
77
78int	bc_add(int biosdev);		/* Register CD booted from. */
79int	bc_getdev(struct i386_devdesc *dev);	/* return dev_t for (dev) */
80int	bc_bios2unit(int biosdev);	/* xlate BIOS device -> bioscd unit */
81int	bc_unit2bios(int unit);		/* xlate bioscd unit -> BIOS device */
82uint32_t bd_getbigeom(int bunit);	/* return geometry in bootinfo format */
83int	bd_bios2unit(int biosdev);	/* xlate BIOS device -> biosdisk unit */
84int	bd_unit2bios(int unit);		/* xlate biosdisk unit -> BIOS device */
85int	bd_getdev(struct i386_devdesc *dev);	/* return dev_t for (dev) */
86
87ssize_t	i386_copyin(const void *src, vm_offset_t dest, const size_t len);
88ssize_t	i386_copyout(const vm_offset_t src, void *dest, const size_t len);
89ssize_t	i386_readin(const int fd, vm_offset_t dest, const size_t len);
90
91struct preloaded_file;
92void	bios_addsmapdata(struct preloaded_file *);
93void	bios_getsmap(void);
94
95void	bios_getmem(void);
96extern uint32_t		bios_basemem;	/* base memory in bytes */
97extern uint32_t		bios_extmem;	/* extended memory in bytes */
98extern vm_offset_t	memtop;		/* last address of physical memory + 1 */
99extern vm_offset_t	memtop_copyin;	/* memtop less heap size for the cases */
100					/*  when heap is at the top of         */
101					/*  extended memory; for other cases   */
102					/*  just the same as memtop            */
103extern uint32_t		high_heap_size;	/* extended memory region available */
104extern vm_offset_t	high_heap_base;	/* for use as the heap */
105
106int biospci_find_devclass(uint32_t class, int index, uint32_t *locator);
107int biospci_write_config(uint32_t locator, int offset, int width, uint32_t val);
108int biospci_read_config(uint32_t locator, int offset, int width, uint32_t *val);
109uint32_t biospci_locator(int8_t bus, uint8_t device, uint8_t function);
110
111void	biosacpi_detect(void);
112
113int	i386_autoload(void);
114
115int	bi_getboothowto(char *kargs);
116void	bi_setboothowto(int howto);
117vm_offset_t	bi_copyenv(vm_offset_t addr);
118int	bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip,
119	    vm_offset_t *modulep, vm_offset_t *kernend);
120int	bi_load64(char *args, vm_offset_t *modulep, vm_offset_t *kernend);
121
122void	pxe_enable(void *pxeinfo);
123