1 /* $NetBSD: inkernel.c,v 1.3 1999/06/28 01:20:44 sakamoto Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Kazuki Sakamoto. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <stand.h> 40 #include <sys/param.h> 41 #include "boot.h" 42 #include "magic.h" 43 44 #define KERNENTRY (RELOC - 0x200000) 45 46 void 47 init_in() 48 { 49 int p; 50 51 for (p = endaddr(); p < KERNENTRY; p += sizeof (int)) { 52 if (*(int *)p != ENTRY || 53 *(int *)(p + sizeof (int)) != 0 || 54 *(int *)(p + sizeof (int) * 2) != 0) 55 continue; 56 57 p += sizeof (int) * 3; 58 if (memcmp((char *)p, magic, MAGICSIZE) == 0) { 59 kern_len = *(int *)(p + MAGICSIZE); 60 memcpy((char *)KERNENTRY, 61 (char *)(p + MAGICSIZE + KERNLENSIZE), 62 kern_len); 63 break; 64 } 65 } 66 } 67 68 int 69 inopen(p) 70 struct open_file *p; 71 { 72 if (kern_len) 73 return (0); 74 return (EINVAL); 75 } 76 77 int 78 inclose(p) 79 struct open_file *p; 80 { 81 return (0); 82 } 83 84 int 85 instrategy(devdata, func, blk, size, buf, rsize) 86 void *devdata; /* device uniq data */ 87 int func; /* function (read or write) */ 88 daddr_t blk; /* block number */ 89 size_t size; /* request size in bytes */ 90 void *buf; /* buffer */ 91 size_t *rsize; /* bytes transferred */ 92 { 93 94 memcpy(buf, (char *)(KERNENTRY + blk * DEV_BSIZE), size); 95 *rsize = size; 96 return (0); 97 } 98