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 * $FreeBSD: src/sys/boot/i386/libi386/libi386.h,v 1.16 2003/05/01 03:56:29 peter Exp $ 27 */ 28 29 #include <machine/types.h> /* XXX for vm_offset_t */ 30 31 /* 32 * i386 fully-qualified device descriptor. 33 * Note, this must match the 'struct devdesc' declaration 34 * in bootstrap.h. 35 */ 36 struct i386_devdesc 37 { 38 struct devsw *d_dev; 39 int d_type; 40 union 41 { 42 struct 43 { 44 int unit; 45 int slice; 46 int partition; 47 void *data; 48 } biosdisk; 49 struct 50 { 51 int unit; 52 void *data; 53 } bioscd; 54 struct 55 { 56 int unit; /* XXX net layer lives over these? */ 57 } netif; 58 } d_kind; 59 }; 60 61 static __inline u_int 62 read_eflags(void) 63 { 64 u_int ef; 65 66 __asm __volatile("pushfl; popl %0" : "=r" (ef)); 67 return (ef); 68 } 69 70 static __inline void 71 write_eflags(u_int ef) 72 { 73 __asm __volatile("pushl %0; popfl" : : "r" (ef)); 74 } 75 76 /* 77 * Max number of sectors to bounce-buffer if the request crosses a 64k boundary 78 * 79 * Bounce buffers can no longer be malloc()'d because the malloc pool 80 * now uses high memory. Declare statically. 81 */ 82 #define BOUNCEBUF_SIZE 8192 83 #define BOUNCEBUF_SECTS (BOUNCEBUF_SIZE / BIOSDISK_SECSIZE) 84 85 extern char bounce_base[BOUNCEBUF_SIZE]; 86 87 int i386_getdev(void **vdev, const char *devspec, const char **path); 88 char *i386_fmtdev(void *vdev); 89 int i386_setcurrdev(struct env_var *ev, int flags, const void *value); 90 91 extern struct devdesc currdev; /* our current device */ 92 93 #define MAXDEV 31 /* maximum number of distinct devices */ 94 95 /* exported devices XXX rename? */ 96 extern struct devsw bioscd; 97 extern struct devsw biosdisk; 98 extern struct devsw pxedisk; 99 extern struct fs_ops pxe_fsops; 100 101 int bc_add(int biosdev); /* Register CD booted from. */ 102 int bc_getdev(struct i386_devdesc *dev); /* return cdev_t for (dev) */ 103 int bc_bios2unit(int biosdev); /* xlate BIOS device -> bioscd unit */ 104 int bc_unit2bios(int unit); /* xlate bioscd unit -> BIOS device */ 105 u_int32_t bd_getbigeom(int bunit); /* return geometry in bootinfo format */ 106 int bd_bios2unit(int biosdev); /* xlate BIOS device -> biosdisk unit */ 107 int bd_unit2bios(int unit); /* xlate biosdisk unit -> BIOS device */ 108 int bd_getdev(struct i386_devdesc *dev); /* return cdev_t for (dev) */ 109 110 ssize_t i386_copyin(const void *src, vm_offset_t dest, const size_t len); 111 ssize_t i386_copyout(const vm_offset_t src, void *dest, const size_t len); 112 ssize_t i386_readin(const int fd, vm_offset_t dest, const size_t len); 113 114 struct preloaded_file; 115 void bios_addsmapdata(struct preloaded_file *); 116 void bios_getsmap(void); 117 118 void bios_getmem(void); 119 extern u_int32_t bios_basemem; /* base memory in bytes */ 120 extern u_int32_t bios_extmem; /* extended memory in bytes */ 121 extern vm_offset_t memtop; 122 extern vm_offset_t heapbase; 123 124 void biosacpi_detect(void); 125 126 int i386_autoload(void); 127 128 int bi_getboothowto(char *kargs); 129 vm_offset_t bi_copyenv(vm_offset_t addr); 130 int bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip, 131 vm_offset_t *modulep, vm_offset_t *kernend); 132 int bi_load64(char *args, vm_offset_t *modulep, vm_offset_t *kernend); 133 134 void pxe_enable(void *pxeinfo); 135