2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
30 * i386 fully-qualified device descriptor.
31 * Note, this must match the 'struct devdesc' declaration
32 * in bootstrap.h and also with struct zfs_devdesc for zfs
63 * relocater trampoline support.
65 struct relocate_data
{
71 extern void relocater(void);
74 * The relocater_data[] is fixed size array allocated in relocater_tramp.S
76 extern struct relocate_data relocater_data
[];
77 extern uint32_t relocater_size
;
79 extern uint16_t relocator_ip
;
80 extern uint16_t relocator_cs
;
81 extern uint16_t relocator_ds
;
82 extern uint16_t relocator_es
;
83 extern uint16_t relocator_fs
;
84 extern uint16_t relocator_gs
;
85 extern uint16_t relocator_ss
;
86 extern uint16_t relocator_sp
;
87 extern uint32_t relocator_esi
;
88 extern uint32_t relocator_eax
;
89 extern uint32_t relocator_ebx
;
90 extern uint32_t relocator_edx
;
91 extern uint32_t relocator_ebp
;
92 extern uint16_t relocator_a20_enabled
;
94 int i386_getdev(void **vdev
, const char *devspec
, const char **path
);
95 char *i386_fmtdev(void *vdev
);
96 int i386_setcurrdev(struct env_var
*ev
, int flags
, const void *value
);
98 extern struct devdesc currdev
; /* our current device */
100 #define MAXDEV 31 /* maximum number of distinct devices */
101 #define MAXBDDEV MAXDEV
103 /* exported devices XXX rename? */
104 extern struct devsw bioscd
;
105 extern struct devsw biosdisk
;
106 extern struct devsw pxedisk
;
107 extern struct fs_ops pxe_fsops
;
109 int bc_add(int biosdev
); /* Register CD booted from. */
110 int bc_getdev(struct i386_devdesc
*dev
); /* return dev_t for (dev) */
111 int bc_bios2unit(int biosdev
); /* xlate BIOS device -> bioscd unit */
112 int bc_unit2bios(int unit
); /* xlate bioscd unit -> BIOS device */
113 uint32_t bd_getbigeom(int bunit
); /* return geometry in bootinfo format */
114 int bd_bios2unit(int biosdev
); /* xlate BIOS device -> biosdisk unit */
115 int bd_unit2bios(int unit
); /* xlate biosdisk unit -> BIOS device */
116 int bd_getdev(struct i386_devdesc
*dev
); /* return dev_t for (dev) */
118 ssize_t
i386_copyin(const void *src
, vm_offset_t dest
, const size_t len
);
119 ssize_t
i386_copyout(const vm_offset_t src
, void *dest
, const size_t len
);
120 ssize_t
i386_readin(const int fd
, vm_offset_t dest
, const size_t len
);
122 struct preloaded_file
;
123 void bios_addsmapdata(struct preloaded_file
*);
124 void bios_getsmap(void);
126 void bios_getmem(void);
127 extern uint32_t bios_basemem
; /* base memory in bytes */
128 extern uint32_t bios_extmem
; /* extended memory in bytes */
129 extern vm_offset_t memtop
; /* last address of physical memory + 1 */
130 extern vm_offset_t memtop_copyin
; /* memtop less heap size for the cases */
131 /* when heap is at the top of */
132 /* extended memory; for other cases */
133 /* just the same as memtop */
134 extern uint32_t high_heap_size
; /* extended memory region available */
135 extern vm_offset_t high_heap_base
; /* for use as the heap */
137 void biospci_detect(void);
138 int biospci_find_devclass(uint32_t class, int index
, uint32_t *locator
);
139 int biospci_read_config(uint32_t locator
, int offset
, int width
, uint32_t *val
);
140 uint32_t biospci_locator(int8_t bus
, uint8_t device
, uint8_t function
);
141 int biospci_write_config(uint32_t locator
, int offset
, int width
, uint32_t val
);
143 void biosacpi_detect(void);
145 int i386_autoload(void);
147 int bi_getboothowto(char *kargs
);
148 void bi_setboothowto(int howto
);
149 vm_offset_t
bi_copyenv(vm_offset_t addr
);
150 int bi_load32(char *args
, int *howtop
, int *bootdevp
, vm_offset_t
*bip
,
151 vm_offset_t
*modulep
, vm_offset_t
*kernend
);
152 int bi_load64(char *args
, vm_offset_t addr
, vm_offset_t
*modulep
,
153 vm_offset_t
*kernend
, int add_smap
);
154 int bi_checkcpu(void);
156 void pxe_enable(void *pxeinfo
);