1 /* $OpenBSD: devs.c,v 1.12 2020/12/09 18:10:19 krw Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN 16 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 17 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/param.h> 21 #include <libsa.h> 22 #include <lib/libsa/loadfile.h> 23 24 int sector; 25 26 void 27 machdep(void) 28 { 29 tick_init(); 30 cninit(); 31 } 32 33 int 34 devopen(struct open_file *f, const char *fname, char **file) 35 { 36 if (fname[0] != 'c' || fname[1] != 'f' || fname[2] != ':') 37 return EINVAL; 38 39 *file = (char *)fname + 3; 40 f->f_flags |= F_NODEV; 41 f->f_dev = &devsw[0]; 42 return (0); 43 } 44 45 void 46 devboot(dev_t bootdev, char *p) 47 { 48 sector = bootdev; /* passed from pbr */ 49 p[0] = 'c'; 50 p[1] = 'f'; 51 p[2] = '\0'; 52 } 53 54 char * 55 ttyname(int fd) 56 { 57 return "scif"; 58 } 59 60 dev_t 61 ttydev(char *name) 62 { 63 return NODEV; 64 } 65 66 int 67 cnspeed(dev_t dev, int sp) 68 { 69 scif_init(sp); 70 return sp; 71 } 72 73 void 74 run_loadfile(uint64_t *marks, int howto) 75 { 76 u_long entry; 77 78 entry = marks[MARK_ENTRY]; 79 cache_flush(); 80 cache_disable(); 81 82 (*(void (*)(int,int,int))entry)(howto, marks[MARK_END], 0); 83 } 84 85 int 86 blkdevopen(struct open_file *f, ...) 87 { 88 return 0; 89 } 90 91 int 92 blkdevstrategy(void *v, int flag, daddr_t dblk, size_t size, void *buf, size_t *rsize) 93 { 94 95 if (flag != F_READ) 96 return EROFS; 97 98 if (size & (DEV_BSIZE - 1)) 99 return EINVAL; 100 101 if (rsize) 102 *rsize = size; 103 104 if (size != 0 && readsects(0x40, sector + dblk, buf, 105 size / DEV_BSIZE) != 0) 106 return EIO; 107 108 return 0; 109 } 110 111 int 112 blkdevclose(struct open_file *f) 113 { 114 return 0; 115 } 116