bootmain.c revision 1.6
1 /* $NetBSD: bootmain.c,v 1.6 2020/08/14 03:34:22 isaki Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994 Takumi Nakamura. 5 * Copyright (c) 1999, 2000 Itoh Yasufumi. 6 * Copyright (c) 2001 Minoura Makoto. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Takumi Nakamura. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <machine/bootinfo.h> 39 #include <lib/libsa/stand.h> 40 #include <lib/libsa/loadfile.h> 41 42 #include "xxboot.h" 43 #include "libx68k.h" 44 #include "iocs.h" 45 #include "exec_image.h" 46 47 #define EXSCSI_BDID ((void *)0x00ea0001) 48 49 /* for debug */ 50 unsigned int startregs[16]; 51 52 static int get_scsi_host_adapter(char *); 53 void bootmain(void) __attribute__ ((__noreturn__)); 54 55 /* 56 * Check the type of SCSI interface 57 */ 58 static int 59 get_scsi_host_adapter(char *devstr) 60 { 61 uint8_t *bootrom; 62 int ha; 63 64 #ifdef XXBOOT_DEBUG 65 *(uint32_t *)(devstr + 0) = '/' << 24 | 's' << 16 | 'p' << 8 | 'c'; 66 #if defined(CDBOOT) 67 *(uint32_t *)(devstr + 4) = '@' << 24 | '0' << 16 | '/' << 8 | 'c'; 68 #else 69 *(uint32_t *)(devstr + 4) = '@' << 24 | '0' << 16 | '/' << 8 | 's'; 70 #endif 71 *(uint32_t *)(devstr + 8) = 'd' << 24 | '@' << 16 | '0' << 8 | ','; 72 *(uint32_t *)(devstr + 12) = '0' << 24 | ':' << 16 | 'a' << 8 | '\0'; 73 #endif 74 75 bootrom = (uint8_t *)(BOOT_INFO & 0x00ffffe0); 76 /* 77 * bootrom+0x24 "SCSIIN" ... Internal SCSI (spc@0) 78 * "SCSIEX" ... External SCSI (spc@1 or mha@0) 79 */ 80 if (*(uint16_t *)(bootrom + 0x24 + 4) == 0x494e) { /* "IN" */ 81 ha = (X68K_BOOT_SCSIIF_SPC << 4) | 0; 82 } else if (badbaddr(EXSCSI_BDID)) { 83 ha = (X68K_BOOT_SCSIIF_MHA << 4) | 0; 84 #ifdef XXBOOT_DEBUG 85 *(uint32_t *)devstr = '/' << 24 | 'm' << 16 | 'h' << 8 | 'a'; 86 #endif 87 } else { 88 ha = (X68K_BOOT_SCSIIF_SPC << 4) | 1; 89 #ifdef XXBOOT_DEBUG 90 devstr[5] = '1'; 91 #endif 92 } 93 94 return ha; 95 } 96 97 void 98 bootmain(void) 99 { 100 int bootdev, ha, fd; 101 char bootdevstr[16]; 102 u_long marks[MARK_MAX]; 103 104 IOCS_B_PRINT(bootprog_name); 105 IOCS_B_PRINT(" rev."); 106 IOCS_B_PRINT(bootprog_rev); 107 IOCS_B_PRINT("\r\n"); 108 109 ha = get_scsi_host_adapter(bootdevstr); 110 #ifdef XXBOOT_DEBUG 111 bootdevstr[10] = '0' + (ID & 7); 112 bootdevstr[14] = 'a'; 113 #endif 114 115 #if defined(CDBOOT) 116 bootdev = X68K_MAKESCSIBOOTDEV(X68K_MAJOR_CD, ha >> 4, ha & 15, 117 ID & 7, 0, 0); 118 #elif defined(FDBOOT) || defined(SDBOOT) 119 if (BINF_ISFD(&BOOT_INFO)) { 120 /* floppy */ 121 #ifdef XXBOOT_DEBUG 122 *(uint32_t *)bootdevstr = 123 ('f' << 24) | ('d' << 16) | ('@' << 8) | 124 ('0' + (BOOT_INFO & 3)); 125 bootdevstr[4] = '\0'; 126 #endif 127 /* fdNa for 1024 bytes/sector, fdNc for 512 bytes/sector */ 128 bootdev = X68K_MAKEBOOTDEV(X68K_MAJOR_FD, BOOT_INFO & 3, 129 (FDSECMINMAX.minsec.N == 3) ? 0 : 2); 130 } else { 131 /* SCSI */ 132 bootdev = X68K_MAKESCSIBOOTDEV(X68K_MAJOR_SD, ha >> 4, ha & 15, 133 ID & 7, 0, 0 /* XXX: assume partition a */); 134 } 135 #else 136 bootdev = 0; 137 #endif 138 139 #ifdef XXBOOT_DEBUG 140 IOCS_B_PRINT("boot device: "); 141 IOCS_B_PRINT(bootdevstr); 142 #endif 143 IOCS_B_PRINT("\r\n"); 144 145 marks[MARK_START] = BOOT_TEXTADDR; 146 fd = loadfile("x68k/boot", marks, LOAD_TEXT|LOAD_DATA|LOAD_BSS); 147 if (fd < 0) 148 fd = loadfile("boot", marks, LOAD_TEXT|LOAD_DATA|LOAD_BSS); 149 if (fd >= 0) { 150 close(fd); 151 exec_image(BOOT_TEXTADDR, /* image loaded at */ 152 BOOT_TEXTADDR, /* image executed at */ 153 BOOT_TEXTADDR, /* XXX: entry point */ 154 0, /* XXX: image size */ 155 bootdev, 0); /* arguments */ 156 } 157 IOCS_B_PRINT("can't load the secondary bootstrap."); 158 exit(0); 159 } 160 161 int 162 devopen(struct open_file *f, const char *fname, char **file) 163 { 164 165 *file = __UNCONST(fname); 166 return xxopen(f); 167 } 168
Indexes created Mon Sep 29 03:10:08 GMT 2025