util/options/build_opt_tbl.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2003 Eric Biederman (ebiederm@xmission.com)
   5  * Copyright (C) 2007-2010 coresystems GmbH
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25 #include <ctype.h>
  26 #include <errno.h>
  27 #include <libgen.h>
  28 #define UTIL_BUILD_OPTION_TABLE
  29 #include "../../src/include/pc80/mc146818rtc.h"
  30 #include "../../src/include/boot/coreboot_tables.h"
  31
  32 #define CMOS_IMAGE_BUFFER_SIZE 256
  33 #define INPUT_LINE_MAX 256
  34 #define MAX_VALUE_BYTE_LENGTH 64
  35
  36 #define TMPFILE_LEN 25600
  37 #define TMPFILE_TEMPLATE "/build_opt_tbl_XXXXXX"
  38
  39 static unsigned char cmos_table[4096];
  40
  41 /* This array is used to isolate bits that are to be changed in a byte */
  42 static unsigned char clip[9]={0,1,3,7,0x0f,0x1f,0x3f,0x7f,0xff};
  43
  44 #ifdef WIN32
  45 #include <fcntl.h>
  46 char *mkstemp(char* name)
  47 {
  48         static char val='0';
  49         char *c=name;
  50         while (*c!='X') c++;
  51         *c=val++;
  52         return open(name,O_CREAT | O_RDWR);
  53 }
  54 #define UNLINK_IF_NECESSARY(x) unlink(x)
  55 #else
  56 #define UNLINK_IF_NECESSARY(x)
  57 #endif
  58
  59 /**
  60  * This routine loops through the entried and tests if any of the fields
  61  * overlap.
  62  * If there is an overlap, the routine exits, otherwise it returns.
  63  *
  64  * @param entry_start memory pointer to the start of the entries.
  65  * @param entry_end   memory pointer to the byte past the entries.
  66  */
  67 static void test_for_entry_overlaps(void *entry_start, void *entry_end)
  68 {
  69         int ptr;
  70         char *cptr;
  71         int buffer_bit_size;
  72         int offset;
  73         int byte;
  74         int byte_length;
  75         struct cmos_entries *ce;
  76         unsigned char test[CMOS_IMAGE_BUFFER_SIZE];
  77         unsigned char set;
  78
  79         /* calculate the size of the cmos buffer in bits */
  80         buffer_bit_size=(CMOS_IMAGE_BUFFER_SIZE*8);
  81         /* clear the temporary test buffer */
  82         for(ptr=0; ptr < CMOS_IMAGE_BUFFER_SIZE; ptr++)
  83                 test[ptr]=0;
  84
  85         /* loop through each entry in the table testing for errors */
  86         for(cptr = entry_start; cptr < (char *)entry_end; cptr += ce->size) {
  87                 ce=(struct cmos_entries *)cptr;
  88                 /* test if entry goes past the end of the buffer */
  89                 if((int)(ce->bit+ce->length) > buffer_bit_size) {
  90                         printf("Error - Entry %s start bit + length must be less than %d\n",
  91                                 ce->name,buffer_bit_size);
  92                         exit(1);
  93                 }
  94                 byte=ce->bit/8;
  95                 offset=ce->bit%8;
  96                 byte_length=ce->length/8;
  97                 if(byte_length) {       /* entry is 8 bits long or more */
  98                         if(offset) { /* if 8 bits or more long, it must be byte aligned */
  99                                 printf("Error - Entry %s length over 8 must be byte aligned\n",
 100                                         ce->name);
 101                                 exit(1);
 102                         }
 103                         /* test if entries 8 or more in length are even bytes */
 104                         if(ce->length%8){
 105                                 printf("Error - Entry %s length over 8 must be a multiple of 8\n",
 106                                         ce->name);
 107                                 exit(1);
 108                         }
 109                         /* test if any of the bits have been previously used */
 110                         for(;byte_length;byte_length--,byte++) {
 111                                 if(test[byte]) {
 112                                         printf("Error - Entry %s uses same bits previously used\n",
 113                                                 ce->name);
 114                                         exit(1);
 115                                 }
 116                                 test[byte]=clip[8]; /* set the bits defined in test */
 117                         }
 118                 } else {
 119                         /* test if bits overlap byte boundaries */
 120                         if((int)ce->length > (8-offset)) {
 121                                 printf("Error - Entry %s length overlaps a byte boundry\n",
 122                                         ce->name);
 123                                 exit(1);
 124                         }
 125                         /* test for bits previously used */
 126                         set=(clip[ce->length]<<offset);
 127                         if(test[byte]&set) {
 128                                 printf("Error - Entry %s uses same bits previously used\n",
 129                                                 ce->name);
 130                                 exit(1);
 131                         }
 132                         test[byte]|=set;  /* set the bits defined in test */
 133                 }
 134         }
 135         return;
 136 }
 137
 138 /* This routine displays the usage options */
 139 static void display_usage(char *name)
 140 {
 141         printf("Usage: %s [--config filename]\n", name);
 142         printf("                       [--option filename]\n");
 143         printf("                       [--header filename]\n\n");
 144         printf("--config = Build the definitions table from the given file.\n");
 145         printf("--binary = Output a binary file with the definitions.\n");
 146         printf("--option = Output a C source file with the definitions.\n");
 147         printf("--header = Output a C header file with the definitions.\n");
 148         exit(1);
 149 }
 150
 151 static void skip_spaces(char *line, char **ptr)
 152 {
 153         if (!isspace(**ptr)) {
 154                 printf("Error missing whitespace in line\n%s\n", line);
 155                 exit(1);
 156         }
 157         while(isspace(**ptr)) {
 158                 (*ptr)++;
 159         }
 160         return;
 161 }
 162
 163 static unsigned long get_number(char *line, char **ptr, int base)
 164 {
 165         unsigned long value;
 166         char *ptr2;
 167         value = strtoul(*ptr, &ptr2, base);
 168         if (ptr2 == *ptr) {
 169                 printf("Error missing digits at: \n%s\n in line:\n%s\n",
 170                         *ptr, line);
 171                 exit(1);
 172         }
 173         *ptr = ptr2;
 174         return value;
 175 }
 176
 177 static int is_ident_digit(int c)
 178 {
 179         int result;
 180         switch(c) {
 181         case '0':       case '1':       case '2':       case '3':
 182         case '4':       case '5':       case '6':       case '7':
 183         case '8':       case '9':
 184                 result = 1;
 185                 break;
 186         default:
 187                 result = 0;
 188                 break;
 189         }
 190         return result;
 191 }
 192
 193 static int is_ident_nondigit(int c)
 194 {
 195         int result;
 196         switch(c) {
 197         case 'A':       case 'B':       case 'C':       case 'D':
 198         case 'E':       case 'F':       case 'G':       case 'H':
 199         case 'I':       case 'J':       case 'K':       case 'L':
 200         case 'M':       case 'N':       case 'O':       case 'P':
 201         case 'Q':       case 'R':       case 'S':       case 'T':
 202         case 'U':       case 'V':       case 'W':       case 'X':
 203         case 'Y':       case 'Z':
 204         case 'a':       case 'b':       case 'c':       case 'd':
 205         case 'e':       case 'f':       case 'g':       case 'h':
 206         case 'i':       case 'j':       case 'k':       case 'l':
 207         case 'm':       case 'n':       case 'o':       case 'p':
 208         case 'q':       case 'r':       case 's':       case 't':
 209         case 'u':       case 'v':       case 'w':       case 'x':
 210         case 'y':       case 'z':
 211         case '_':
 212                 result = 1;
 213                 break;
 214         default:
 215                 result = 0;
 216                 break;
 217         }
 218         return result;
 219 }
 220
 221 static int is_ident(char *str)
 222 {
 223         int result;
 224         int ch;
 225         ch = *str;
 226         result = 0;
 227         if (is_ident_nondigit(ch)) {
 228                 do {
 229                         str++;
 230                         ch = *str;
 231                 } while(ch && (is_ident_nondigit(ch) || (is_ident_digit(ch))));
 232                 result = (ch == '\0');
 233         }
 234         return result;
 235 }
 236
 237 /**
 238  * This routine builds the cmos definition table from the cmos layout file
 239  *
 240  * The input comes from the configuration file which contains two parts
 241  * entries and enumerations.  Each section is started with the key words
 242  * entries and enumerations.  Records then follow in their respective
 243  * formats.
 244  *
 245  * The output of this program is the cmos definitions table.  It is stored
 246  * in the cmos_table array. If this module is called, and the global
 247  * table_file has been implimented by the user, the table is also written
 248  * to the specified file.
 249  *
 250  * This program exits with a return code of 1 on error.  It returns 0 on
 251  * successful completion
 252  */
 253 int main(int argc, char **argv)
 254 {
 255         int i;
 256         char *config=0;
 257         char *binary=0;
 258         char *option=0;
 259         char *header=0;
 260         FILE *fp;
 261         int tempfile;
 262         char tempfilename[TMPFILE_LEN];
 263         struct cmos_option_table *ct;
 264         struct cmos_entries *ce;
 265         struct cmos_enums *c_enums, *c_enums_start;
 266         struct cmos_checksum *cs, *new_cs;
 267         char line[INPUT_LINE_MAX];
 268         unsigned char uc;
 269         int entry_mode=0;
 270         int enum_mode=0;
 271         int checksum_mode=0;
 272         int cnt;
 273         char *cptr;
 274         void *entry_start, *entry_end;
 275         int entries_length;
 276         int enum_length;
 277         int len;
 278         char buf[16];
 279
 280         for(i=1;i<argc;i++) {
 281                 if(argv[i][0]!='-') {
 282                         display_usage(argv[0]);
 283                 }
 284                 switch(argv[i][1]) {
 285                         case '-':       /* data is requested from a file */
 286                                 switch(argv[i][2]) {
 287                                         case 'c':  /* use a configuration file */
 288                                                 if(strcmp(&argv[i][2],"config")) {
 289                                                         display_usage(argv[0]);
 290                                                 }
 291                                                 config=argv[++i];
 292                                                 break;
 293                                         case 'b':  /* Emit a binary file */
 294                                                 if(strcmp(&argv[i][2],"binary")) {
 295                                                         display_usage(argv[0]);
 296                                                 }
 297                                                 binary=argv[++i];
 298                                                 break;
 299                                         case 'o':  /* use a cmos definitions table file */
 300                                                 if(strcmp(&argv[i][2],"option")) {
 301                                                         display_usage(argv[0]);
 302                                                 }
 303                                                 option=argv[++i];
 304                                                 break;
 305                                         case 'h': /* Output a header file */
 306                                                 if (strcmp(&argv[i][2], "header") != 0) {
 307                                                         display_usage(argv[0]);
 308                                                 }
 309                                                 header=argv[++i];
 310                                                 break;
 311                                         default:
 312                                                 display_usage(argv[0]);
 313                                                 break;
 314                                 }
 315                                 break;
 316
 317                         default:
 318                                 display_usage(argv[0]);
 319                                 break;
 320                 }
 321         }
 322
 323
 324         /* Has the user specified a configuration file */
 325         if(config) {    /* if yes, open it */
 326                 if((fp=fopen(config,"r"))==NULL){
 327                         fprintf(stderr, "Error - Can not open config file %s\n",config);
 328                         exit(1);  /* exit if it can not be opened */
 329                 }
 330         }
 331         else {  /* no configuration file specified, so try the default */
 332                 if((fp=fopen("cmos.layout","r"))==NULL){
 333                         fprintf(stderr, "Error - Can not open cmos.layout\n");
 334                         exit(1);  /* end of no configuration file is found */
 335                 }
 336         }
 337         /* type cast a pointer, so we can us the structure */
 338         ct=(struct cmos_option_table*)cmos_table;
 339         /* start the table with the type signature */
 340         ct->tag = LB_TAG_CMOS_OPTION_TABLE;
 341         /* put in the header length */
 342         ct->header_length=sizeof(*ct);
 343
 344         /* Get the entry records */
 345         ce=(struct cmos_entries*)(cmos_table+(ct->header_length));
 346         cptr = (char*)ce;
 347         for(;;){  /* this section loops through the entry records */
 348                 if(fgets(line,INPUT_LINE_MAX,fp)==NULL)
 349                         break; /* end if no more input */
 350                 // FIXME mode should be a single enum.
 351                 if(!entry_mode) {  /* skip input until the entries key word */
 352                         if (strstr(line,"entries") != 0) {
 353                                 entry_mode=1;
 354                                 enum_mode=0;
 355                                 checksum_mode=0;
 356                                 continue;
 357                         }
 358                 } else {  /* Test if we are done with entries and starting enumerations */
 359                         if (strstr(line,"enumerations") != 0){
 360                                 entry_mode=0;
 361                                 enum_mode=1;
 362                                 checksum_mode=0;
 363                                 break;
 364                         }
 365                         if (strstr(line, "checksums") != 0) {
 366                                 entry_mode=0;
 367                                 enum_mode=0;
 368                                 checksum_mode=1;
 369                                 break;
 370                         }
 371                 }
 372
 373                 /* skip commented and blank lines */
 374                 if(line[0]=='#') continue;
 375                 if(line[strspn(line," ")]=='\n') continue;
 376                 /* scan in the input data */
 377                 sscanf(line,"%d %d %c %d %s",
 378                         &ce->bit,&ce->length,&uc,&ce->config_id,&ce->name[0]);
 379                 ce->config=(int)uc;
 380                 /* check bit and length ranges */
 381                 if(ce->bit>(CMOS_IMAGE_BUFFER_SIZE*8)) {
 382                         fprintf(stderr, "Error - bit is to big in line \n%s\n",line);
 383                         exit(1);
 384                 }
 385                 if((ce->length>(MAX_VALUE_BYTE_LENGTH*8))&&(uc!='r')) {
 386                         fprintf(stderr, "Error - Length is to long in line \n%s\n",line);
 387                         exit(1);
 388                 }
 389                 if (!is_ident((char *)ce->name)) {
 390                         fprintf(stderr,
 391                                 "Error - Name %s is an invalid identifier in line\n %s\n",
 392                                 ce->name, line);
 393                         exit(1);
 394                 }
 395                 /* put in the record type */
 396                 ce->tag=LB_TAG_OPTION;
 397                 /* calculate and save the record length */
 398                 len=strlen((char *)ce->name)+1;
 399                 /* make the record int aligned */
 400                 if(len%4)
 401                         len+=(4-(len%4));
 402                 ce->size=sizeof(struct cmos_entries)-32+len;
 403                 cptr = (char*)ce;
 404                 cptr += ce->size;  /* increment to the next table position */
 405                 ce = (struct cmos_entries*) cptr;
 406         }
 407
 408         /* put the length of the entries into the header section */
 409         entries_length = (cptr - (char *)&cmos_table) - ct->header_length;
 410
 411         /* compute the start of the enumerations section */
 412         entry_start = ((char*)&cmos_table) + ct->header_length;
 413         entry_end   = ((char *)entry_start) + entries_length;
 414         c_enums_start = c_enums = (struct cmos_enums*)entry_end;
 415         /* test for overlaps in the entry records */
 416         test_for_entry_overlaps(entry_start, entry_end);
 417
 418         for(;enum_mode;){ /* loop to build the enumerations section */
 419                 long ptr;
 420                 if(fgets(line,INPUT_LINE_MAX,fp)==NULL)
 421                         break; /* go till end of input */
 422
 423                 if (strstr(line, "checksums") != 0) {
 424                         enum_mode=0;
 425                         checksum_mode=1;
 426                         break;
 427                 }
 428
 429                 /* skip commented and blank lines */
 430                 if(line[0]=='#') continue;
 431                 if(line[strspn(line," ")]=='\n') continue;
 432
 433                 /* scan in the data */
 434                 for(ptr=0;(line[ptr]==' ')||(line[ptr]=='\t');ptr++);
 435                 c_enums->config_id=strtol(&line[ptr],(char**)NULL,10);
 436                 for(;(line[ptr]!=' ')&&(line[ptr]!='\t');ptr++);
 437                 for(;(line[ptr]==' ')||(line[ptr]=='\t');ptr++);
 438                 c_enums->value=strtol(&line[ptr],(char**)NULL,10);
 439                 for(;(line[ptr]!=' ')&&(line[ptr]!='\t');ptr++);
 440                 for(;(line[ptr]==' ')||(line[ptr]=='\t');ptr++);
 441                 for(cnt=0;(line[ptr]!='\n')&&(cnt<31);ptr++,cnt++)
 442                         c_enums->text[cnt]=line[ptr];
 443                 c_enums->text[cnt]=0;
 444
 445                 /* make the record int aligned */
 446                 cnt++;
 447                 if(cnt%4)
 448                         cnt+=4-(cnt%4);
 449                 /* store the record length */
 450                 c_enums->size=((char *)&c_enums->text[cnt]) - (char *)c_enums;
 451                 /* store the record type */
 452                 c_enums->tag=LB_TAG_OPTION_ENUM;
 453                 /* increment to the next record */
 454                 c_enums=(struct cmos_enums*)&c_enums->text[cnt];
 455         }
 456         /* save the enumerations length */
 457         enum_length= (char *)c_enums - (char *)c_enums_start;
 458         ct->size=ct->header_length+enum_length+entries_length;
 459
 460         /* Get the checksum records */
 461         new_cs = (struct cmos_checksum *)(cmos_table+(ct->size));
 462         for(;checksum_mode;) { /* This section finds the checksums */
 463                 char *ptr;
 464                 if(fgets(line, INPUT_LINE_MAX,fp)==NULL)
 465                         break; /* end if no more input */
 466
 467                 /* skip commented and blank lines */
 468                 if (line[0]=='#') continue;
 469                 if (line[strspn(line, " ")]=='\n') continue;
 470                 if (memcmp(line, "checksum", 8) != 0) continue;
 471
 472                 /* We actually found a new cmos checksum entry */
 473                 cs = new_cs;
 474
 475                 /* get the information */
 476                 ptr = line + 8;
 477                 skip_spaces(line, &ptr);
 478                 cs->range_start = get_number(line, &ptr, 10);
 479
 480                 skip_spaces(line, &ptr);
 481                 cs->range_end = get_number(line, &ptr, 10);
 482
 483                 skip_spaces(line, &ptr);
 484                 cs->location = get_number(line, &ptr, 10);
 485
 486                 /* Make certain there are spaces until the end of the line */
 487                 skip_spaces(line, &ptr);
 488
 489                 if ((cs->range_start%8) != 0) {
 490                         fprintf(stderr, "Error - range start is not byte aligned in line\n%s\n", line);
 491                         exit(1);
 492                 }
 493                 if (cs->range_start >= (CMOS_IMAGE_BUFFER_SIZE*8)) {
 494                         fprintf(stderr, "Error - range start is to big in line\n%s\n", line);
 495                         exit(1);
 496                 }
 497                 if ((cs->range_end%8) != 7) {
 498                         fprintf(stderr, "Error - range end is not byte aligned in line\n%s\n", line);
 499                         exit(1);
 500                 }
 501                 if ((cs->range_end) >= (CMOS_IMAGE_BUFFER_SIZE*8)) {
 502                         fprintf(stderr, "Error - range end is to long in line\n%s\n", line);
 503                         exit(1);
 504                 }
 505                 if ((cs->location%8) != 0) {
 506                         fprintf(stderr, "Error - location is not byte aligned in line\n%s\n", line);
 507                         exit(1);
 508                 }
 509                 if ((cs->location >= (CMOS_IMAGE_BUFFER_SIZE*8)) ||
 510                         ((cs->location + 16) > (CMOS_IMAGE_BUFFER_SIZE*8)))
 511                 {
 512                         fprintf(stderr, "Error - location is to big in line\n%s\n", line);
 513                         exit(1);
 514                 }
 515
 516                 cs->tag = LB_TAG_OPTION_CHECKSUM;
 517                 cs->size = sizeof(*cs);
 518                 cs->type = CHECKSUM_PCBIOS;
 519
 520                 cptr = (char *)cs;
 521                 cptr += cs->size;
 522                 new_cs = (struct cmos_checksum *)cptr;
 523         }
 524         ct->size += (cptr - (char *)(cmos_table + ct->size));
 525         fclose(fp);
 526
 527         /* See if we want to output a C source file */
 528         if(option) {
 529                 int err=0;
 530                 snprintf(tempfilename, TMPFILE_LEN, "%s%s", dirname(strdup(option)), TMPFILE_TEMPLATE);
 531                 tempfile = mkstemp(tempfilename);
 532                 if(tempfile == -1) {
 533                         perror("Error - Could not create temporary file");
 534                         exit(1);
 535                 }
 536
 537                 if((fp=fdopen(tempfile,"w"))==NULL){
 538                         perror("Error - Could not open temporary file");
 539                         unlink(tempfilename);
 540                         exit(1);
 541                 }
 542
 543                 /* write the header */
 544                 if(fwrite("unsigned char option_table[] = {",1,32,fp) != 32) {
 545                         perror("Error - Could not write image file");
 546                         fclose(fp);
 547                         unlink(tempfilename);
 548                         exit(1);
 549                 }
 550                 /* write the array values */
 551                 for(i=0; i<(int)(ct->size-1); i++) {
 552                         if(!(i%10) && !err) err=(fwrite("\n\t",1,2,fp) != 2);
 553                         sprintf(buf,"0x%02x,",cmos_table[i]);
 554                         if(!err) err=(fwrite(buf,1,5,fp) != 5);
 555                 }
 556                 /* write the end */
 557                 sprintf(buf,"0x%02x\n",cmos_table[i]);
 558                 if(!err) err=(fwrite(buf,1,4,fp) != 4);
 559                 if(fwrite("};\n",1,3,fp) != 3) {
 560                         perror("Error - Could not write image file");
 561                         fclose(fp);
 562                         unlink(tempfilename);
 563                         exit(1);
 564                 }
 565
 566                 fclose(fp);
 567                 UNLINK_IF_NECESSARY(option);
 568                 if (rename(tempfilename, option)) {
 569                         fprintf(stderr, "Error - Could not write %s: ", option);
 570                         perror(NULL);
 571                         unlink(tempfilename);
 572                         exit(1);
 573                 }
 574         }
 575
 576         /* See if we also want to output a binary file */
 577         if(binary) {
 578                 int err=0;
 579                 snprintf(tempfilename, TMPFILE_LEN, "%s%s", dirname(strdup(binary)), TMPFILE_TEMPLATE);
 580                 tempfile = mkstemp(tempfilename);
 581                 if(tempfile == -1) {
 582                         perror("Error - Could not create temporary file");
 583                         exit(1);
 584                 }
 585
 586                 if((fp=fdopen(tempfile,"wb"))==NULL){
 587                         perror("Error - Could not open temporary file");
 588                         unlink(tempfilename);
 589                         exit(1);
 590                 }
 591
 592                 /* write the array values */
 593                 if(fwrite(cmos_table, (int)(ct->size-1), 1, fp) != 1) {
 594                         perror("Error - Could not write image file");
 595                         fclose(fp);
 596                         unlink(tempfilename);
 597                         exit(1);
 598                 }
 599
 600                 fclose(fp);
 601                 UNLINK_IF_NECESSARY(binary);
 602                 if (rename(tempfilename, binary)) {
 603                         fprintf(stderr, "Error - Could not write %s: ", binary);
 604                         perror(NULL);
 605                         unlink(tempfilename);
 606                         exit(1);
 607                 }
 608         }
 609
 610         /* See if we also want to output a C header file */
 611         if (header) {
 612                 struct cmos_option_table *hdr;
 613                 struct lb_record *ptr, *end;
 614
 615                 snprintf(tempfilename, TMPFILE_LEN, "%s%s", dirname(strdup(header)), TMPFILE_TEMPLATE);
 616                 tempfile = mkstemp(tempfilename);
 617                 if(tempfile == -1) {
 618                         perror("Error - Could not create temporary file");
 619                         exit(1);
 620                 }
 621
 622                 fp = fdopen(tempfile, "w");
 623                 if (!fp) {
 624                         perror("Error - Could not open temporary file");
 625                         unlink(tempfilename);
 626                         exit(1);
 627                 }
 628
 629                 /* Get the cmos table header */
 630                 hdr = (struct cmos_option_table *)cmos_table;
 631                 /* Walk through the entry records */
 632                 ptr = (struct lb_record *)(cmos_table + hdr->header_length);
 633                 end = (struct lb_record *)(cmos_table + hdr->size);
 634                 fprintf(fp, "/* This file is autogenerated.\n"
 635                             " * See mainboard's cmos.layout file.\n */\n\n"
 636                             "#ifndef __OPTION_TABLE_H\n#define __OPTION_TABLE_H\n\n");
 637
 638                 for(;ptr < end; ptr = (struct lb_record *)(((char *)ptr) + ptr->size)) {
 639                         if (ptr->tag != LB_TAG_OPTION) {
 640                                 continue;
 641                         }
 642                         ce = (struct cmos_entries *)ptr;
 643
 644                         if (!is_ident((char *)ce->name)) {
 645                                 fprintf(stderr, "Invalid identifier: %s\n",
 646                                         ce->name);
 647                                 fclose(fp);
 648                                 unlink(tempfilename);
 649                                 exit(1);
 650                         }
 651                         fprintf(fp, "#define CMOS_VSTART_%s %d\n",
 652                                 ce->name, ce->bit);
 653                         fprintf(fp, "#define CMOS_VLEN_%s %d\n",
 654                                 ce->name, ce->length);
 655                 }
 656
 657                 if (cs != NULL) {
 658                         fprintf(fp, "\n#define LB_CKS_RANGE_START %d\n", cs->range_start / 8);
 659                         fprintf(fp, "#define LB_CKS_RANGE_END %d\n", cs->range_end / 8);
 660                         fprintf(fp, "#define LB_CKS_LOC %d\n", cs->location / 8);
 661                 } else {
 662                         fprintf(stderr, "Error - No checksums defined.\n");
 663                         fclose(fp);
 664                         unlink(tempfilename);
 665                         exit(1);
 666                 }
 667                 fprintf(fp, "\n#endif // __OPTION_TABLE_H\n");
 668                 fclose(fp);
 669
 670                 UNLINK_IF_NECESSARY(header);
 671                 if (rename(tempfilename, header)) {
 672                         fprintf(stderr, "Error - Could not write %s: ", header);
 673                         perror(NULL);
 674                         unlink(tempfilename);
 675                         exit(1);
 676                 }
 677         }
 678
 679         return 0;
 680 }
 681
 682