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
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
64 * relocater trampoline support.
66 struct relocate_data {
72 extern void relocater(void);
75 * The relocater_data[] is fixed size array allocated in relocater_tramp.S
77 extern struct relocate_data relocater_data[];
78 extern uint32_t relocater_size;
80 extern uint16_t relocator_ip;
81 extern uint16_t relocator_cs;
82 extern uint16_t relocator_ds;
83 extern uint16_t relocator_es;
84 extern uint16_t relocator_fs;
85 extern uint16_t relocator_gs;
86 extern uint16_t relocator_ss;
87 extern uint16_t relocator_sp;
88 extern uint32_t relocator_esi;
89 extern uint32_t relocator_eax;
90 extern uint32_t relocator_ebx;
91 extern uint32_t relocator_edx;
92 extern uint32_t relocator_ebp;
93 extern uint16_t relocator_a20_enabled;
95 int i386_getdev(void **vdev, const char *devspec, const char **path);
96 char *i386_fmtdev(void *vdev);
97 int i386_setcurrdev(struct env_var *ev, int flags, const void *value);
99 extern struct devdesc currdev; /* our current device */
101 #define MAXDEV 31 /* maximum number of distinct devices */
102 #define MAXBDDEV MAXDEV
104 /* exported devices XXX rename? */
105 extern struct devsw bioscd;
106 extern struct devsw biosdisk;
107 extern struct devsw pxedisk;
108 extern struct fs_ops pxe_fsops;
110 int bc_add(int biosdev); /* Register CD booted from. */
111 int bc_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */
112 int bc_bios2unit(int biosdev); /* xlate BIOS device -> bioscd unit */
113 int bc_unit2bios(int unit); /* xlate bioscd unit -> BIOS device */
114 uint32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */
115 int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */
116 int bd_unit2bios(int unit); /* xlate biosdisk unit -> BIOS device */
117 int bd_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */
119 ssize_t i386_copyin(const void *src, vm_offset_t dest, const size_t len);
120 ssize_t i386_copyout(const vm_offset_t src, void *dest, const size_t len);
121 ssize_t i386_readin(const int fd, vm_offset_t dest, const size_t len);
123 struct preloaded_file;
124 void bios_addsmapdata(struct preloaded_file *);
125 void bios_getsmap(void);
127 void bios_getmem(void);
128 extern uint32_t bios_basemem; /* base memory in bytes */
129 extern uint32_t bios_extmem; /* extended memory in bytes */
130 extern vm_offset_t memtop; /* last address of physical memory + 1 */
131 extern vm_offset_t memtop_copyin; /* memtop less heap size for the cases */
132 /* when heap is at the top of */
133 /* extended memory; for other cases */
134 /* just the same as memtop */
135 extern uint32_t high_heap_size; /* extended memory region available */
136 extern vm_offset_t high_heap_base; /* for use as the heap */
138 void biospci_detect(void);
139 int biospci_find_devclass(uint32_t class, int index, uint32_t *locator);
140 int biospci_read_config(uint32_t locator, int offset, int width, uint32_t *val);
141 uint32_t biospci_locator(int8_t bus, uint8_t device, uint8_t function);
142 int biospci_write_config(uint32_t locator, int offset, int width, uint32_t val);
144 void biosacpi_detect(void);
146 int i386_autoload(void);
148 int bi_getboothowto(char *kargs);
149 void bi_setboothowto(int howto);
150 vm_offset_t bi_copyenv(vm_offset_t addr);
151 int bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip,
152 vm_offset_t *modulep, vm_offset_t *kernend);
153 int bi_load64(char *args, vm_offset_t addr, vm_offset_t *modulep,
154 vm_offset_t *kernend, int add_smap);
156 void pxe_enable(void *pxeinfo);