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 #ifndef _LIBI386_H 28 #define _LIBI386_H 29 30 /* 31 * i386 fully-qualified device descriptor. 32 */ 33 struct i386_devdesc { 34 struct devdesc dd; /* Must be first. */ 35 union { 36 struct { 37 int slice; 38 int partition; 39 off_t offset; 40 } biosdisk; 41 struct { 42 uint64_t pool_guid; 43 uint64_t root_guid; 44 } zfs; 45 } d_kind; 46 }; 47 48 /* 49 * relocater trampoline support. 50 */ 51 struct relocate_data { 52 uint32_t src; 53 uint32_t dest; 54 uint32_t size; 55 }; 56 57 extern void relocater(void); 58 59 /* 60 * The relocater_data[] is fixed size array allocated in relocater_tramp.S 61 */ 62 extern struct relocate_data relocater_data[]; 63 extern uint32_t relocater_size; 64 65 extern uint16_t relocator_ip; 66 extern uint16_t relocator_cs; 67 extern uint16_t relocator_ds; 68 extern uint16_t relocator_es; 69 extern uint16_t relocator_fs; 70 extern uint16_t relocator_gs; 71 extern uint16_t relocator_ss; 72 extern uint16_t relocator_sp; 73 extern uint32_t relocator_esi; 74 extern uint32_t relocator_eax; 75 extern uint32_t relocator_ebx; 76 extern uint32_t relocator_edx; 77 extern uint32_t relocator_ebp; 78 extern uint16_t relocator_a20_enabled; 79 80 int i386_getdev(void **vdev, const char *devspec, const char **path); 81 char *i386_fmtdev(void *vdev); 82 int i386_setcurrdev(struct env_var *ev, int flags, const void *value); 83 84 extern struct devdesc currdev; /* our current device */ 85 86 #define MAXDEV 31 /* maximum number of distinct devices */ 87 #define MAXBDDEV MAXDEV 88 89 /* exported devices XXX rename? */ 90 extern struct devsw bioscd; 91 extern struct devsw biosfd; 92 extern struct devsw bioshd; 93 extern struct devsw pxedisk; 94 extern struct fs_ops pxe_fsops; 95 96 int bc_add(int biosdev); /* Register CD booted from. */ 97 uint32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */ 98 int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */ 99 int bd_unit2bios(struct i386_devdesc *); /* xlate biosdisk -> BIOS device */ 100 int bd_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */ 101 102 ssize_t i386_copyin(const void *src, vm_offset_t dest, const size_t len); 103 ssize_t i386_copyout(const vm_offset_t src, void *dest, const size_t len); 104 ssize_t i386_readin(const int fd, vm_offset_t dest, const size_t len); 105 106 struct preloaded_file; 107 void bios_addsmapdata(struct preloaded_file *); 108 void bios_getsmap(void); 109 110 void bios_getmem(void); 111 extern uint32_t bios_basemem; /* base memory in bytes */ 112 extern uint32_t bios_extmem; /* extended memory in bytes */ 113 extern vm_offset_t memtop; /* last address of physical memory + 1 */ 114 extern vm_offset_t memtop_copyin; /* memtop less heap size for the cases */ 115 /* when heap is at the top of */ 116 /* extended memory; for other cases */ 117 /* just the same as memtop */ 118 extern uint32_t high_heap_size; /* extended memory region available */ 119 extern vm_offset_t high_heap_base; /* for use as the heap */ 120 121 /* 16KB buffer space for real mode data transfers. */ 122 #define BIO_BUFFER_SIZE 0x4000 123 void *bio_alloc(size_t size); 124 void bio_free(void *ptr, size_t size); 125 126 void biospci_detect(void); 127 int biospci_find_devclass(uint32_t class, int index, uint32_t *locator); 128 int biospci_read_config(uint32_t locator, int offset, int width, uint32_t *val); 129 uint32_t biospci_locator(int8_t bus, uint8_t device, uint8_t function); 130 int biospci_write_config(uint32_t locator, int offset, int width, uint32_t val); 131 132 void biosacpi_detect(void); 133 134 int i386_autoload(void); 135 vm_offset_t i386_loadaddr(u_int type, void *data, vm_offset_t addr); 136 137 int bi_getboothowto(char *kargs); 138 void bi_setboothowto(int howto); 139 vm_offset_t bi_copyenv(vm_offset_t addr); 140 int bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip, 141 vm_offset_t *modulep, vm_offset_t *kernend); 142 int bi_load64(char *args, vm_offset_t addr, vm_offset_t *modulep, 143 vm_offset_t *kernend, int add_smap); 144 int bi_checkcpu(void); 145 void bi_isadir(void); 146 147 int mb_kernel_cmdline(struct preloaded_file *, struct devdesc *, char **); 148 void multiboot_tramp(uint32_t, vm_offset_t, vm_offset_t); 149 void pxe_enable(void *pxeinfo); 150 151 #endif /* _LIBI386_H */ 152