1 /* $NetBSD: smallnet.c,v 1.5 2008/04/28 20:23:31 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Simon Burge. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <lib/libsa/stand.h> 33 #include <lib/libkern/libkern.h> 34 #include <lib/libz/zlib.h> 35 36 #include <sys/param.h> 37 #include <sys/exec_elf.h> 38 39 #include <machine/dec_prom.h> 40 41 #include "../common/common.h" 42 #include "../common/bootinfo.h" 43 44 45 typedef void (*entrypt) __P((int, char **, int, const void *)); 46 47 int main __P((int, char **)); 48 49 /* 50 * These variables and array will be patched to contain a kernel image 51 * and some information about the kernel. 52 */ 53 54 int maxkernel_size = KERNELSIZE; 55 entrypt kernel_entry = 0 /* (entrypt)0x80030000 */ /* XXX XXX XXX */; 56 u_long kernel_loadaddr = 0 /* 0x80030000 */ /* XXX XXX XXX */; 57 int kernel_size = 0 /* 387321 */ /* XXX XXX XXX */; 58 char kernel_image[KERNELSIZE] = "|This is the kernel image!\n"; 59 60 61 /* 62 * This gets arguments from the PROM, calls other routines to open 63 * and load the secondary boot loader called boot, and then transfers 64 * execution to that program. 65 * 66 * Argv[0] should be something like "rz(0,0,0)netbsd" on a DECstation 3100. 67 * Argv[0,1] should be something like "boot 5/rz0/netbsd" on a DECstation 5000. 68 * The argument "-a" means netbsd should do an automatic reboot. 69 */ 70 int 71 main(argc, argv) 72 int argc; 73 char **argv; 74 { 75 int ret; 76 char *name; 77 uLongf destlen; 78 struct btinfo_bootpath bi_bpath; 79 80 printf("NetBSD/pmax " NETBSD_VERS " " BOOT_TYPE_NAME 81 " Bootstrap, Revision %s\n", bootprog_rev); 82 printf("(%s, %s)\n", bootprog_maker, bootprog_date); 83 84 /* initialise bootinfo structure early */ 85 bi_init(BOOTINFO_ADDR); 86 87 /* check for DS5000 boot */ 88 if (strcmp(argv[0], "boot") == 0) { 89 argc--; 90 argv++; 91 } 92 name = *argv; 93 94 strncpy(bi_bpath.bootpath, name, BTINFO_BOOTPATH_LEN); 95 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath)); 96 97 destlen = RELOC - kernel_loadaddr; 98 printf("\n"); 99 printf("Decompressing %d bytes to 0x%lx\n", kernel_size, 100 kernel_loadaddr); 101 ret = uncompress((Bytef *)kernel_loadaddr, &destlen, kernel_image, 102 kernel_size); 103 if (ret != Z_OK) { 104 printf("Error decompressing kernel\n"); 105 printf("libz error %d\n", ret); 106 return (1); 107 } 108 109 if (callv == &callvec) 110 kernel_entry(argc, argv, 0, 0); 111 else 112 kernel_entry(argc, argv, DEC_PROM_MAGIC, callv); 113 return (1); 114 } 115