1 /* $NetBSD: inkernel.c,v 1.1 2007/12/17 19:09:50 garbled 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 <lib/libsa/stand.h> 40 #include <sys/param.h> 41 42 #include "boot.h" 43 #include "magic.h" 44 45 #define KERNENTRY (RELOC - 0x200000) 46 /*#define KERNENTRY (0x800000)*/ 47 /* Note that the iplcb lives in the 0x700000 range, so we need to avoid that*/ 48 49 void 50 init_in(u_long ladr) 51 { 52 extern char _start[], _edata[], _end[]; 53 /*char *p = (char *)(ladr + _end); for loadaddr 0x0*/ 54 char *p = (char *)(ladr + (_end - ladr)); 55 u_int i; 56 57 printf("p=%p start %p edata %p end %p ladr %lx\n", p, _start, _edata, _end, ladr); 58 59 for (i = 0; i < 4096; i++, p++) { 60 if (memcmp(p, magic, MAGICSIZE) == 0) { 61 kern_len = *(int *)(p + MAGICSIZE); 62 printf("Found magic at 0x%x, kernel is size 0x%x\n", i, kern_len); 63 memmove((char *)KERNENTRY, 64 p + MAGICSIZE + KERNLENSIZE, kern_len); 65 return; 66 } 67 } 68 printf("magic is not found.\n"); 69 } 70 71 int 72 inopen(struct open_file *p) 73 { 74 75 if (kern_len) 76 return (0); 77 return (EINVAL); 78 } 79 80 int 81 inclose(struct open_file *p) 82 { 83 84 return (0); 85 } 86 87 int 88 instrategy(void *devdata, int func, daddr_t blk, size_t size, void *buf, 89 size_t *rsize) 90 { 91 92 memcpy(buf, (char *)KERNENTRY + ((long)blk * DEV_BSIZE), size); 93 *rsize = size; 94 return (0); 95 } 96