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.
34 struct devdesc dd; /* Must be first. */
52 * relocater trampoline support.
54 struct relocate_data {
60 extern void relocater(void);
63 * The relocater_data[] is fixed size array allocated in relocater_tramp.S
65 extern struct relocate_data relocater_data[];
66 extern uint32_t relocater_size;
68 extern uint16_t relocator_ip;
69 extern uint16_t relocator_cs;
70 extern uint16_t relocator_ds;
71 extern uint16_t relocator_es;
72 extern uint16_t relocator_fs;
73 extern uint16_t relocator_gs;
74 extern uint16_t relocator_ss;
75 extern uint16_t relocator_sp;
76 extern uint32_t relocator_esi;
77 extern uint32_t relocator_eax;
78 extern uint32_t relocator_ebx;
79 extern uint32_t relocator_edx;
80 extern uint32_t relocator_ebp;
81 extern uint16_t relocator_a20_enabled;
83 int i386_getdev(void **vdev, const char *devspec, const char **path);
84 char *i386_fmtdev(void *vdev);
85 int i386_setcurrdev(struct env_var *ev, int flags, const void *value);
87 extern struct devdesc currdev; /* our current device */
89 #define MAXDEV 31 /* maximum number of distinct devices */
90 #define MAXBDDEV MAXDEV
92 /* exported devices XXX rename? */
93 extern struct devsw bioscd;
94 extern struct devsw biosfd;
95 extern struct devsw bioshd;
96 extern struct devsw pxedisk;
97 extern struct fs_ops pxe_fsops;
99 int bc_add(int biosdev); /* Register CD booted from. */
100 uint32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */
101 int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */
102 int bd_unit2bios(struct i386_devdesc *); /* xlate biosdisk -> BIOS device */
103 int bd_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */
105 ssize_t i386_copyin(const void *src, vm_offset_t dest, const size_t len);
106 ssize_t i386_copyout(const vm_offset_t src, void *dest, const size_t len);
107 ssize_t i386_readin(const int fd, vm_offset_t dest, const size_t len);
109 struct preloaded_file;
110 void bios_addsmapdata(struct preloaded_file *);
111 void bios_getsmap(void);
113 void bios_getmem(void);
114 extern uint32_t bios_basemem; /* base memory in bytes */
115 extern uint32_t bios_extmem; /* extended memory in bytes */
116 extern vm_offset_t memtop; /* last address of physical memory + 1 */
117 extern vm_offset_t memtop_copyin; /* memtop less heap size for the cases */
118 /* when heap is at the top of */
119 /* extended memory; for other cases */
120 /* just the same as memtop */
121 extern uint32_t high_heap_size; /* extended memory region available */
122 extern vm_offset_t high_heap_base; /* for use as the heap */
124 /* 16KB buffer space for real mode data transfers. */
125 #define BIO_BUFFER_SIZE 0x4000
126 void *bio_alloc(size_t size);
127 void bio_free(void *ptr, size_t size);
130 * Values for width parameter to biospci_{read,write}_config
132 #define BIOSPCI_8BITS 0
133 #define BIOSPCI_16BITS 1
134 #define BIOSPCI_32BITS 2
136 void biospci_detect(void);
137 int biospci_find_devclass(uint32_t class, int index, uint32_t *locator);
138 int biospci_read_config(uint32_t locator, int offset, int width, uint32_t *val);
139 uint32_t biospci_locator(int8_t bus, uint8_t device, uint8_t function);
140 int biospci_write_config(uint32_t locator, int offset, int width, uint32_t val);
142 void biosacpi_detect(void);
144 int i386_autoload(void);
146 int bi_getboothowto(char *kargs);
147 void bi_setboothowto(int howto);
148 vm_offset_t bi_copyenv(vm_offset_t addr);
149 int bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip,
150 vm_offset_t *modulep, vm_offset_t *kernend);
151 int bi_load64(char *args, vm_offset_t addr, vm_offset_t *modulep,
152 vm_offset_t *kernend, int add_smap);
154 void pxe_enable(void *pxeinfo);