/* $OpenBSD: devs.c,v 1.13 2023/02/23 19:48:22 miod Exp $ */ /* * Copyright (c) 2006 Michael Shalayeff * All rights reserved. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include int sector; void machdep(void) { tick_init(); cninit(); } int devopen(struct open_file *f, const char *fname, char **file) { if (fname[0] != 'c' || fname[1] != 'f' || fname[2] != ':') return EINVAL; *file = (char *)fname + 3; f->f_flags |= F_NODEV; f->f_dev = &devsw[0]; return (0); } void devboot(dev_t bootdev, char *p) { sector = bootdev; /* passed from pbr */ p[0] = 'c'; p[1] = 'f'; p[2] = '\0'; } void run_loadfile(uint64_t *marks, int howto) { u_long entry; entry = marks[MARK_ENTRY]; cache_flush(); cache_disable(); (*(void (*)(int,int,int))entry)(howto, marks[MARK_END], 0); } int blkdevopen(struct open_file *f, ...) { return 0; } int blkdevstrategy(void *v, int flag, daddr_t dblk, size_t size, void *buf, size_t *rsize) { if (flag != F_READ) return EROFS; if (size & (DEV_BSIZE - 1)) return EINVAL; if (rsize) *rsize = size; if (size != 0 && readsects(0x40, sector + dblk, buf, size / DEV_BSIZE) != 0) return EIO; return 0; } int blkdevclose(struct open_file *f) { return 0; }