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 */ 27 28 29 /* 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 33 * support. 34 */ 35 struct i386_devdesc 36 { 37 struct devsw *d_dev; 38 int d_type; 39 int d_unit; 40 union 41 { 42 struct 43 { 44 void *data; 45 int slice; 46 int partition; 47 off_t offset; 48 } biosdisk; 49 struct 50 { 51 void *data; 52 } bioscd; 53 struct 54 { 55 void *data; 56 uint64_t pool_guid; 57 uint64_t root_guid; 58 } zfs; 59 } d_kind; 60 }; 61 62 /* 63 * relocater trampoline support. 64 */ 65 struct relocate_data { 66 uint32_t src; 67 uint32_t dest; 68 uint32_t size; 69 }; 70 71 extern void relocater(void); 72 73 extern uint32_t relocater_data; 74 extern uint32_t relocater_size; 75 76 extern uint16_t relocator_ip; 77 extern uint16_t relocator_cs; 78 extern uint16_t relocator_ds; 79 extern uint16_t relocator_es; 80 extern uint16_t relocator_fs; 81 extern uint16_t relocator_gs; 82 extern uint16_t relocator_ss; 83 extern uint16_t relocator_sp; 84 extern uint32_t relocator_esi; 85 extern uint32_t relocator_eax; 86 extern uint32_t relocator_ebx; 87 extern uint32_t relocator_edx; 88 extern uint32_t relocator_ebp; 89 extern uint16_t relocator_a20_enabled; 90 91 int i386_getdev(void **vdev, const char *devspec, const char **path); 92 char *i386_fmtdev(void *vdev); 93 int i386_setcurrdev(struct env_var *ev, int flags, const void *value); 94 95 extern struct devdesc currdev; /* our current device */ 96 97 #define MAXDEV 31 /* maximum number of distinct devices */ 98 #define MAXBDDEV MAXDEV 99 100 /* exported devices XXX rename? */ 101 extern struct devsw bioscd; 102 extern struct devsw biosdisk; 103 extern struct devsw pxedisk; 104 extern struct fs_ops pxe_fsops; 105 106 int bc_add(int biosdev); /* Register CD booted from. */ 107 int bc_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */ 108 int bc_bios2unit(int biosdev); /* xlate BIOS device -> bioscd unit */ 109 int bc_unit2bios(int unit); /* xlate bioscd unit -> BIOS device */ 110 uint32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */ 111 int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */ 112 int bd_unit2bios(int unit); /* xlate biosdisk unit -> BIOS device */ 113 int bd_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */ 114 115 ssize_t i386_copyin(const void *src, vm_offset_t dest, const size_t len); 116 ssize_t i386_copyout(const vm_offset_t src, void *dest, const size_t len); 117 ssize_t i386_readin(const int fd, vm_offset_t dest, const size_t len); 118 119 struct preloaded_file; 120 void bios_addsmapdata(struct preloaded_file *); 121 void bios_getsmap(void); 122 123 void bios_getmem(void); 124 extern uint32_t bios_basemem; /* base memory in bytes */ 125 extern uint32_t bios_extmem; /* extended memory in bytes */ 126 extern vm_offset_t memtop; /* last address of physical memory + 1 */ 127 extern vm_offset_t memtop_copyin; /* memtop less heap size for the cases */ 128 /* when heap is at the top of */ 129 /* extended memory; for other cases */ 130 /* just the same as memtop */ 131 extern uint32_t high_heap_size; /* extended memory region available */ 132 extern vm_offset_t high_heap_base; /* for use as the heap */ 133 134 void biospci_detect(void); 135 int biospci_count_device_type(uint32_t devid); 136 int biospci_find_devclass(uint32_t class, int index, uint32_t *locator); 137 int biospci_find_device(uint32_t devid, int index, uint32_t *locator); 138 int biospci_write_config(uint32_t locator, int offset, int width, uint32_t val); 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); 141 142 void biosacpi_detect(void); 143 144 int i386_autoload(void); 145 146 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); 153 int bi_checkcpu(void); 154 155 void pxe_enable(void *pxeinfo); 156