1 /* $NetBSD: boot.c,v 1.15 2000/11/01 14:04:28 ragge Exp $ */ 2 /*- 3 * Copyright (c) 1982, 1986 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)boot.c 7.15 (Berkeley) 5/4/91 35 */ 36 37 #include <sys/param.h> 38 #include <sys/reboot.h> 39 #include <sys/boot_flag.h> 40 #include "lib/libsa/stand.h" 41 #include "lib/libsa/loadfile.h" 42 #include "lib/libkern/libkern.h" 43 44 #define V750UCODE(x) ((x>>8)&255) 45 46 #include "machine/rpb.h" 47 48 #include "vaxstand.h" 49 50 /* 51 * Boot program... arguments passed in r10 and r11 determine 52 * whether boot stops to ask for system name and which device 53 * boot comes from. 54 */ 55 56 char line[100]; 57 int bootdev, debug; 58 extern unsigned opendev; 59 60 void usage(char *), boot(char *), halt(char *); 61 void Xmain(void); 62 void autoconf(void); 63 int getsecs(void); 64 int setjmp(int *); 65 int testkey(void); 66 void loadpcs(void); 67 68 const struct vals { 69 char *namn; 70 void (*func)(char *); 71 char *info; 72 } val[] = { 73 {"?", usage, "Show this help menu"}, 74 {"help", usage, "Same as '?'"}, 75 {"boot", boot, "Load and execute file"}, 76 {"halt", halt, "Halts the system"}, 77 {0, 0}, 78 }; 79 80 static struct { 81 char name[12]; 82 int quiet; 83 } filelist[] = { 84 { "netbsd.vax", 1 }, 85 { "netbsd", 0 }, 86 { "netbsd.gz", 0 }, 87 { "netbsd.old", 0 }, 88 { "gennetbsd", 0 }, 89 { "", 0 }, 90 }; 91 92 int jbuf[10]; 93 int sluttid, senast, skip, askname; 94 struct rpb bootrpb; 95 96 void 97 Xmain(void) 98 { 99 int io; 100 int j, nu; 101 u_long marks[MARK_MAX]; 102 extern const char bootprog_rev[], bootprog_date[]; 103 104 io = 0; 105 skip = 1; 106 autoconf(); 107 108 askname = bootrpb.rpb_bootr5 & RB_ASKNAME; 109 printf("\n\r>> NetBSD/vax boot [%s %s] <<\n", bootprog_rev, 110 bootprog_date); 111 printf(">> Press any key to abort autoboot "); 112 sluttid = getsecs() + 5; 113 senast = 0; 114 skip = 0; 115 setjmp(jbuf); 116 for (;;) { 117 nu = sluttid - getsecs(); 118 if (senast != nu) 119 printf("%c%d", 8, nu); 120 if (nu <= 0) 121 break; 122 senast = nu; 123 if ((j = (testkey() & 0177))) { 124 skip = 1; 125 if (j != 10 && j != 13) { 126 printf("\nPress '?' for help"); 127 askname = 1; 128 } 129 break; 130 } 131 } 132 skip = 1; 133 printf("\n"); 134 135 /* First try to autoboot */ 136 if (askname == 0) { 137 int fileindex; 138 for (fileindex = 0; filelist[fileindex].name[0] != '\0'; 139 fileindex++) { 140 int err; 141 errno = 0; 142 if (!filelist[fileindex].quiet) 143 printf("> boot %s\n", filelist[fileindex].name); 144 marks[MARK_START] = 0; 145 err = loadfile(filelist[fileindex].name, marks, LOAD_KERNEL|COUNT_KERNEL); 146 if (err == 0) { 147 machdep_start((char *)marks[MARK_ENTRY], 0, 148 (void *)marks[MARK_START], 149 (void *)marks[MARK_SYM], 150 (void *)marks[MARK_END]); 151 } 152 if (!filelist[fileindex].quiet) 153 printf("%s: boot failed: %s\n", 154 filelist[fileindex].name, strerror(errno)); 155 #if 0 /* Will hang VAX 4000 machines */ 156 if (testkey()) 157 break; 158 #endif 159 } 160 } 161 162 /* If any key pressed, go to conversational boot */ 163 for (;;) { 164 const struct vals *v = &val[0]; 165 char *c, *d; 166 167 printf("> "); 168 gets(line); 169 170 c = line; 171 while (*c == ' ') 172 c++; 173 174 if (c[0] == 0) 175 continue; 176 177 if ((d = index(c, ' '))) 178 *d++ = 0; 179 180 while (v->namn) { 181 if (strcmp(v->namn, c) == 0) 182 break; 183 v++; 184 } 185 if (v->namn) 186 (*v->func)(d); 187 else 188 printf("Unknown command: %s\n", c); 189 } 190 } 191 192 void 193 halt(char *hej) 194 { 195 asm("halt"); 196 } 197 198 void 199 boot(char *arg) 200 { 201 char *fn = "netbsd"; 202 int howto, fl; 203 204 if (arg) { 205 while (*arg == ' ') 206 arg++; 207 208 if (*arg != '-') { 209 fn = arg; 210 if ((arg = index(arg, ' '))) { 211 *arg++ = 0; 212 while (*arg == ' ') 213 arg++; 214 } else 215 goto load; 216 } 217 if (*arg != '-') { 218 fail: printf("usage: boot [filename] [-asdqv]\n"); 219 return; 220 } 221 222 howto = 0; 223 while (*++arg) { 224 fl = 0; 225 BOOT_FLAG(*arg, fl); 226 if (!fl) 227 goto fail; 228 howto |= fl; 229 } 230 bootrpb.rpb_bootr5 = howto; 231 } 232 load: exec(fn, 0, 0); 233 printf("Boot failed: %s\n", strerror(errno)); 234 } 235 236 /* 750 Patchable Control Store magic */ 237 238 #include "../include/mtpr.h" 239 #include "../include/cpu.h" 240 #include "../include/sid.h" 241 #define PCS_BITCNT 0x2000 /* number of patchbits */ 242 #define PCS_MICRONUM 0x400 /* number of ucode locs */ 243 #define PCS_PATCHADDR 0xf00000 /* start addr of patchbits */ 244 #define PCS_PCSADDR (PCS_PATCHADDR+0x8000) /* start addr of pcs */ 245 #define PCS_PATCHBIT (PCS_PATCHADDR+0xc000) /* patchbits enable reg */ 246 #define PCS_ENABLE 0xfff00000 /* enable bits for pcs */ 247 248 #define extzv(one, two, three,four) \ 249 ({ \ 250 asm __volatile (" extzv %0,%3,(%1),(%2)+" \ 251 : \ 252 : "g"(one),"g"(two),"g"(three),"g"(four)); \ 253 }) 254 255 256 void 257 loadpcs() 258 { 259 static int pcsdone = 0; 260 int mid = mfpr(PR_SID); 261 int i, j, *ip, *jp; 262 char pcs[100]; 263 char *cp; 264 265 if ((mid >> 24) != VAX_750 || ((mid >> 8) & 255) < 95 || pcsdone) 266 return; 267 printf("Updating 11/750 microcode: "); 268 for (cp = line; *cp; cp++) 269 if (*cp == ')' || *cp == ':') 270 break; 271 if (*cp) { 272 bcopy(line, pcs, 99); 273 pcs[99] = 0; 274 i = cp - line + 1; 275 } else 276 i = 0; 277 strcpy(pcs + i, "pcs750.bin"); 278 i = open(pcs, 0); 279 if (i < 0) { 280 printf("bad luck - missing pcs750.bin :-(\n"); 281 return; 282 } 283 /* 284 * We ask for more than we need to be sure we get only what we expect. 285 * After read: 286 * locs 0 - 1023 packed patchbits 287 * 1024 - 11264 packed microcode 288 */ 289 if (read(i, (char *)0, 23*512) != 22*512) { 290 printf("Error reading %s\n", pcs); 291 close(i); 292 return; 293 } 294 close(i); 295 296 /* 297 * Enable patchbit loading and load the bits one at a time. 298 */ 299 *((int *)PCS_PATCHBIT) = 1; 300 ip = (int *)PCS_PATCHADDR; 301 jp = (int *)0; 302 for (i=0; i < PCS_BITCNT; i++) { 303 extzv(i,jp,ip,1); 304 } 305 *((int *)PCS_PATCHBIT) = 0; 306 307 /* 308 * Load PCS microcode 20 bits at a time. 309 */ 310 ip = (int *)PCS_PCSADDR; 311 jp = (int *)1024; 312 for (i=j=0; j < PCS_MICRONUM * 4; i+=20, j++) { 313 extzv(i,jp,ip,20); 314 } 315 316 /* 317 * Enable PCS. 318 */ 319 i = *jp; /* get 1st 20 bits of microcode again */ 320 i &= 0xfffff; 321 i |= PCS_ENABLE; /* reload these bits with PCS enable set */ 322 *((int *)PCS_PCSADDR) = i; 323 324 mid = mfpr(PR_SID); 325 printf("new rev level=%d\n", V750UCODE(mid)); 326 pcsdone = 1; 327 } 328 329 void 330 usage(char *hej) 331 { 332 const struct vals *v = &val[0]; 333 334 printf("Commands:\n"); 335 while (v->namn) { 336 printf("%s\t%s\n", v->namn, v->info); 337 v++; 338 } 339 } 340