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#include "disk.h" 29#ifdef LOADER_ZFS_SUPPORT 30#include "libzfs.h" 31#endif 32/* 33 * i386 fully-qualified device descriptor. 34 */ 35struct i386_devdesc 36{ 37 union 38 { 39 struct devdesc dd; 40 struct disk_devdesc disk; 41#ifdef LOADER_ZFS_SUPPORT 42 struct zfs_devdesc zfs; 43#endif 44 }; 45}; 46 47/* 48 * relocater trampoline support. 49 */ 50struct relocate_data { 51 uint32_t src; 52 uint32_t dest; 53 uint32_t size; 54}; 55 56extern void relocater(void); 57 58/* 59 * The relocater_data[] is fixed size array allocated in relocater_tramp.S 60 */ 61extern struct relocate_data relocater_data[]; 62extern uint32_t relocater_size; 63 64extern uint16_t relocator_ip; 65extern uint16_t relocator_cs; 66extern uint16_t relocator_ds; 67extern uint16_t relocator_es; 68extern uint16_t relocator_fs; 69extern uint16_t relocator_gs; 70extern uint16_t relocator_ss; 71extern uint16_t relocator_sp; 72extern uint32_t relocator_esi; 73extern uint32_t relocator_eax; 74extern uint32_t relocator_ebx; 75extern uint32_t relocator_edx; 76extern uint32_t relocator_ebp; 77extern uint16_t relocator_a20_enabled; 78 79int i386_getdev(void **vdev, const char *devspec, const char **path); 80char *i386_fmtdev(void *vdev); 81 82extern struct devdesc currdev; /* our current device */ 83 84#define MAXDEV 31 /* maximum number of distinct devices */ 85#define MAXBDDEV MAXDEV 86 87#include <readin.h> 88 89/* exported devices XXX rename? */ 90extern struct devsw bioscd; 91extern struct devsw biosfd; 92extern struct devsw bioshd; 93extern struct devsw pxedisk; 94extern struct fs_ops pxe_fsops; 95 96int bc_add(int biosdev); /* Register CD booted from. */ 97uint32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */ 98int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */ 99int bd_unit2bios(struct i386_devdesc *); /* xlate biosdisk -> BIOS device */ 100int bd_getdev(struct i386_devdesc *dev); /* return dev_t for (dev) */ 101 102ssize_t i386_copyin(const void *src, vm_offset_t dest, const size_t len); 103ssize_t i386_copyout(const vm_offset_t src, void *dest, const size_t len); 104ssize_t i386_readin(readin_handle_t fd, vm_offset_t dest, const size_t len); 105 106struct preloaded_file; 107void bios_addsmapdata(struct preloaded_file *); 108void bios_getsmap(void); 109 110void bios_getmem(void); 111extern uint32_t bios_basemem; /* base memory in bytes */ 112extern uint32_t bios_extmem; /* extended memory in bytes */ 113extern vm_offset_t memtop; /* last address of physical memory + 1 */ 114extern 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 */ 118extern uint32_t high_heap_size; /* extended memory region available */ 119extern 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 123void *bio_alloc(size_t size); 124void bio_free(void *ptr, size_t size); 125 126/* 127 * Values for width parameter to biospci_{read,write}_config 128 */ 129#define BIOSPCI_8BITS 0 130#define BIOSPCI_16BITS 1 131#define BIOSPCI_32BITS 2 132 133void biospci_detect(void); 134int biospci_find_devclass(uint32_t class, int index, uint32_t *locator); 135int biospci_read_config(uint32_t locator, int offset, int width, uint32_t *val); 136uint32_t biospci_locator(int8_t bus, uint8_t device, uint8_t function); 137int biospci_write_config(uint32_t locator, int offset, int width, uint32_t val); 138 139void biosacpi_detect(void); 140 141int i386_autoload(void); 142 143void bi_load_vbe_data(struct preloaded_file *kfp); 144int bi_getboothowto(char *kargs); 145void bi_setboothowto(int howto); 146int bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip, 147 vm_offset_t *modulep, vm_offset_t *kernend); 148int bi_load64(char *args, vm_offset_t *modulep, 149 vm_offset_t *kernend, int add_smap); 150 151void pxe_enable(void *pxeinfo); 152