638 lines
19 KiB
C
638 lines
19 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2003 Eric Biederman (ebiederm@xmission.com)
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* Copyright (C) 2007-2010 coresystems GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <errno.h>
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#include <libgen.h>
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#define UTIL_BUILD_OPTION_TABLE
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#include "../../src/include/pc80/mc146818rtc.h"
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#include "../../src/include/boot/coreboot_tables.h"
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#define CMOS_IMAGE_BUFFER_SIZE 256
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#define INPUT_LINE_MAX 256
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#define MAX_VALUE_BYTE_LENGTH 64
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#define TMPFILE_LEN 256
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#define TMPFILE_TEMPLATE "/build_opt_tbl_XXXXXX"
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static unsigned char cmos_table[4096];
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/* This array is used to isolate bits that are to be changed in a byte */
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static unsigned char clip[9]={0,1,3,7,0x0f,0x1f,0x3f,0x7f,0xff};
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#ifdef WIN32
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#include <fcntl.h>
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char *mkstemp(char* name)
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{
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static char val='0';
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char *c=name;
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while (*c!='X') c++;
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*c=val++;
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return open(name,O_CREAT | O_RDWR);
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}
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#define UNLINK_IF_NECESSARY(x) unlink(x)
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#else
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#define UNLINK_IF_NECESSARY(x)
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#endif
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/**
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* This routine loops through the entried and tests if any of the fields
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* overlap.
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* If there is an overlap, the routine exits, otherwise it returns.
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*
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* @param entry_start memory pointer to the start of the entries.
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* @param entry_end memory pointer to the byte past the entries.
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*/
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static void test_for_entry_overlaps(void *entry_start, void *entry_end)
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{
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int ptr;
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char *cptr;
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int buffer_bit_size;
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int offset;
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int byte;
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int byte_length;
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struct cmos_entries *ce;
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unsigned char test[CMOS_IMAGE_BUFFER_SIZE];
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unsigned char set;
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/* calculate the size of the cmos buffer in bits */
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buffer_bit_size=(CMOS_IMAGE_BUFFER_SIZE*8);
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/* clear the temporary test buffer */
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for(ptr=0; ptr < CMOS_IMAGE_BUFFER_SIZE; ptr++)
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test[ptr]=0;
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/* loop through each entry in the table testing for errors */
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for(cptr = entry_start; cptr < (char *)entry_end; cptr += ce->size) {
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ce=(struct cmos_entries *)cptr;
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/* test if entry goes past the end of the buffer */
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if((int)(ce->bit+ce->length) > buffer_bit_size) {
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printf("Error - Entry %s start bit + length must be less than %d\n",
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ce->name,buffer_bit_size);
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exit(1);
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}
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byte=ce->bit/8;
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offset=ce->bit%8;
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byte_length=ce->length/8;
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if(byte_length) { /* entry is 8 bits long or more */
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if(offset) { /* if 8 bits or more long, it must be byte aligned */
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printf("Error - Entry %s length over 8 must be byte aligned\n",
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ce->name);
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exit(1);
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}
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/* test if entries 8 or more in length are even bytes */
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if(ce->length%8){
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printf("Error - Entry %s length over 8 must be a multiple of 8\n",
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ce->name);
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exit(1);
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}
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/* test if any of the bits have been previously used */
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for(;byte_length;byte_length--,byte++) {
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if(test[byte]) {
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printf("Error - Entry %s uses same bits previously used\n",
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ce->name);
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exit(1);
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}
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test[byte]=clip[8]; /* set the bits defined in test */
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}
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} else {
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/* test if bits overlap byte boundaries */
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if((int)ce->length > (8-offset)) {
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printf("Error - Entry %s length overlaps a byte boundry\n",
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ce->name);
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exit(1);
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}
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/* test for bits previously used */
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set=(clip[ce->length]<<offset);
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if(test[byte]&set) {
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printf("Error - Entry %s uses same bits previously used\n",
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ce->name);
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exit(1);
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}
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test[byte]|=set; /* set the bits defined in test */
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}
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}
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return;
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}
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/* This routine displays the usage options */
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static void display_usage(char *name)
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{
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printf("Usage: %s [--config filename]\n", name);
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printf(" [--option filename]\n");
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printf(" [--header filename]\n\n");
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printf("--config = Build the definitions table from the given file.\n");
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printf("--option = Output a C source file with the definitions.\n");
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printf("--header = Ouput a C header file with the definitions.\n");
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exit(1);
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}
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static void skip_spaces(char *line, char **ptr)
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{
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if (!isspace(**ptr)) {
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printf("Error missing whitespace in line\n%s\n", line);
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exit(1);
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}
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while(isspace(**ptr)) {
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(*ptr)++;
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}
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return;
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}
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static unsigned long get_number(char *line, char **ptr, int base)
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{
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unsigned long value;
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char *ptr2;
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value = strtoul(*ptr, &ptr2, base);
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if (ptr2 == *ptr) {
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printf("Error missing digits at: \n%s\n in line:\n%s\n",
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*ptr, line);
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exit(1);
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}
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*ptr = ptr2;
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return value;
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}
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static int is_ident_digit(int c)
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{
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int result;
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switch(c) {
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case '0': case '1': case '2': case '3':
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case '4': case '5': case '6': case '7':
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case '8': case '9':
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result = 1;
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break;
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default:
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result = 0;
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break;
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}
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return result;
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}
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static int is_ident_nondigit(int c)
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{
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int result;
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switch(c) {
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case 'A': case 'B': case 'C': case 'D':
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case 'E': case 'F': case 'G': case 'H':
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case 'I': case 'J': case 'K': case 'L':
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case 'M': case 'N': case 'O': case 'P':
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case 'Q': case 'R': case 'S': case 'T':
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case 'U': case 'V': case 'W': case 'X':
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case 'Y': case 'Z':
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case 'a': case 'b': case 'c': case 'd':
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case 'e': case 'f': case 'g': case 'h':
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case 'i': case 'j': case 'k': case 'l':
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case 'm': case 'n': case 'o': case 'p':
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case 'q': case 'r': case 's': case 't':
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case 'u': case 'v': case 'w': case 'x':
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case 'y': case 'z':
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case '_':
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result = 1;
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break;
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default:
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result = 0;
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break;
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}
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return result;
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}
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static int is_ident(char *str)
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{
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int result;
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int ch;
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ch = *str;
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result = 0;
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if (is_ident_nondigit(ch)) {
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do {
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str++;
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ch = *str;
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} while(ch && (is_ident_nondigit(ch) || (is_ident_digit(ch))));
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result = (ch == '\0');
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}
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return result;
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}
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/**
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* This routine builds the cmos definition table from the cmos layout file
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*
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* The input comes from the configuration file which contains two parts
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* entries and enumerations. Each section is started with the key words
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* entries and enumerations. Records then follow in their respective
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* formats.
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*
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* The output of this program is the cmos definitions table. It is stored
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* in the cmos_table array. If this module is called, and the global
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* table_file has been implimented by the user, the table is also written
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* to the specified file.
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*
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* This program exits with a return code of 1 on error. It returns 0 on
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* successful completion
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*/
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int main(int argc, char **argv)
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{
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int i;
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char *config=0;
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char *option=0;
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char *header=0;
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FILE *fp;
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int tempfile;
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char tempfilename[TMPFILE_LEN];
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struct cmos_option_table *ct;
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struct cmos_entries *ce;
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struct cmos_enums *c_enums, *c_enums_start;
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struct cmos_checksum *cs, *new_cs;
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char line[INPUT_LINE_MAX];
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unsigned char uc;
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int entry_mode=0;
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int enum_mode=0;
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int checksum_mode=0;
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int cnt;
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char *cptr;
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void *entry_start, *entry_end;
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int entries_length;
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int enum_length;
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int len;
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char buf[16];
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for(i=1;i<argc;i++) {
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if(argv[i][0]!='-') {
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display_usage(argv[0]);
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}
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switch(argv[i][1]) {
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case '-': /* data is requested from a file */
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switch(argv[i][2]) {
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case 'c': /* use a configuration file */
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if(strcmp(&argv[i][2],"config")) {
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display_usage(argv[0]);
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}
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config=argv[++i];
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break;
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case 'o': /* use a cmos definitions table file */
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if(strcmp(&argv[i][2],"option")) {
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display_usage(argv[0]);
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}
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option=argv[++i];
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break;
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case 'h': /* Output a header file */
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if (strcmp(&argv[i][2], "header") != 0) {
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display_usage(argv[0]);
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}
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header=argv[++i];
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break;
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default:
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display_usage(argv[0]);
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break;
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}
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break;
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default:
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display_usage(argv[0]);
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break;
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}
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}
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/* Has the user specified a configuration file */
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if(config) { /* if yes, open it */
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if((fp=fopen(config,"r"))==NULL){
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fprintf(stderr, "Error - Can not open config file %s\n",config);
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exit(1); /* exit if it can not be opened */
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}
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}
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else { /* no configuration file specified, so try the default */
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if((fp=fopen("cmos.layout","r"))==NULL){
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fprintf(stderr, "Error - Can not open cmos.layout\n");
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exit(1); /* end of no configuration file is found */
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}
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}
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/* type cast a pointer, so we can us the structure */
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ct=(struct cmos_option_table*)cmos_table;
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/* start the table with the type signature */
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ct->tag = LB_TAG_CMOS_OPTION_TABLE;
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/* put in the header length */
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ct->header_length=sizeof(*ct);
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/* Get the entry records */
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ce=(struct cmos_entries*)(cmos_table+(ct->header_length));
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cptr = (char*)ce;
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for(;;){ /* this section loops through the entry records */
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if(fgets(line,INPUT_LINE_MAX,fp)==NULL)
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break; /* end if no more input */
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// FIXME mode should be a single enum.
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if(!entry_mode) { /* skip input until the entries key word */
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if (strstr(line,"entries") != 0) {
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entry_mode=1;
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enum_mode=0;
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checksum_mode=0;
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continue;
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}
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} else { /* Test if we are done with entries and starting enumerations */
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if (strstr(line,"enumerations") != 0){
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entry_mode=0;
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enum_mode=1;
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checksum_mode=0;
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break;
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}
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if (strstr(line, "checksums") != 0) {
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entry_mode=0;
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enum_mode=0;
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checksum_mode=1;
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break;
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}
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}
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/* skip commented and blank lines */
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if(line[0]=='#') continue;
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if(line[strspn(line," ")]=='\n') continue;
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/* scan in the input data */
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sscanf(line,"%d %d %c %d %s",
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&ce->bit,&ce->length,&uc,&ce->config_id,&ce->name[0]);
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ce->config=(int)uc;
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/* check bit and length ranges */
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if(ce->bit>(CMOS_IMAGE_BUFFER_SIZE*8)) {
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fprintf(stderr, "Error - bit is to big in line \n%s\n",line);
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exit(1);
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}
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if((ce->length>(MAX_VALUE_BYTE_LENGTH*8))&&(uc!='r')) {
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fprintf(stderr, "Error - Length is to long in line \n%s\n",line);
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exit(1);
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}
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if (!is_ident((char *)ce->name)) {
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fprintf(stderr,
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"Error - Name %s is an invalid identifier in line\n %s\n",
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ce->name, line);
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exit(1);
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}
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/* put in the record type */
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ce->tag=LB_TAG_OPTION;
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/* calculate and save the record length */
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len=strlen((char *)ce->name)+1;
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/* make the record int aligned */
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if(len%4)
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len+=(4-(len%4));
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ce->size=sizeof(struct cmos_entries)-32+len;
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cptr = (char*)ce;
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cptr += ce->size; /* increment to the next table position */
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ce = (struct cmos_entries*) cptr;
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}
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/* put the length of the entries into the header section */
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entries_length = (cptr - (char *)&cmos_table) - ct->header_length;
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/* compute the start of the enumerations section */
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entry_start = ((char*)&cmos_table) + ct->header_length;
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entry_end = ((char *)entry_start) + entries_length;
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c_enums_start = c_enums = (struct cmos_enums*)entry_end;
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/* test for overlaps in the entry records */
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test_for_entry_overlaps(entry_start, entry_end);
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for(;enum_mode;){ /* loop to build the enumerations section */
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long ptr;
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if(fgets(line,INPUT_LINE_MAX,fp)==NULL)
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break; /* go till end of input */
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if (strstr(line, "checksums") != 0) {
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enum_mode=0;
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checksum_mode=1;
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break;
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}
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/* skip commented and blank lines */
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if(line[0]=='#') continue;
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if(line[strspn(line," ")]=='\n') continue;
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/* scan in the data */
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for(ptr=0;(line[ptr]==' ')||(line[ptr]=='\t');ptr++);
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c_enums->config_id=strtol(&line[ptr],(char**)NULL,10);
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for(;(line[ptr]!=' ')&&(line[ptr]!='\t');ptr++);
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for(;(line[ptr]==' ')||(line[ptr]=='\t');ptr++);
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c_enums->value=strtol(&line[ptr],(char**)NULL,10);
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for(;(line[ptr]!=' ')&&(line[ptr]!='\t');ptr++);
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for(;(line[ptr]==' ')||(line[ptr]=='\t');ptr++);
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for(cnt=0;(line[ptr]!='\n')&&(cnt<31);ptr++,cnt++)
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c_enums->text[cnt]=line[ptr];
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c_enums->text[cnt]=0;
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/* make the record int aligned */
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cnt++;
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if(cnt%4)
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cnt+=4-(cnt%4);
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/* store the record length */
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c_enums->size=((char *)&c_enums->text[cnt]) - (char *)c_enums;
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/* store the record type */
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c_enums->tag=LB_TAG_OPTION_ENUM;
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/* increment to the next record */
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c_enums=(struct cmos_enums*)&c_enums->text[cnt];
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}
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/* save the enumerations length */
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enum_length= (char *)c_enums - (char *)c_enums_start;
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ct->size=ct->header_length+enum_length+entries_length;
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/* Get the checksum records */
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new_cs = (struct cmos_checksum *)(cmos_table+(ct->size));
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for(;checksum_mode;) { /* This section finds the checksums */
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char *ptr;
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if(fgets(line, INPUT_LINE_MAX,fp)==NULL)
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break; /* end if no more input */
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/* skip commented and blank lines */
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if (line[0]=='#') continue;
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if (line[strspn(line, " ")]=='\n') continue;
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if (memcmp(line, "checksum", 8) != 0) continue;
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/* We actually found a new cmos checksum entry */
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cs = new_cs;
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/* get the information */
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ptr = line + 8;
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skip_spaces(line, &ptr);
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cs->range_start = get_number(line, &ptr, 10);
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skip_spaces(line, &ptr);
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cs->range_end = get_number(line, &ptr, 10);
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skip_spaces(line, &ptr);
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cs->location = get_number(line, &ptr, 10);
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/* Make certain there are spaces until the end of the line */
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skip_spaces(line, &ptr);
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if ((cs->range_start%8) != 0) {
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fprintf(stderr, "Error - range start is not byte aligned in line\n%s\n", line);
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exit(1);
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}
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if (cs->range_start >= (CMOS_IMAGE_BUFFER_SIZE*8)) {
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fprintf(stderr, "Error - range start is to big in line\n%s\n", line);
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exit(1);
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}
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if ((cs->range_end%8) != 7) {
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fprintf(stderr, "Error - range end is not byte aligned in line\n%s\n", line);
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exit(1);
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}
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if ((cs->range_end) >= (CMOS_IMAGE_BUFFER_SIZE*8)) {
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fprintf(stderr, "Error - range end is to long in line\n%s\n", line);
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exit(1);
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}
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if ((cs->location%8) != 0) {
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|
fprintf(stderr, "Error - location is not byte aligned in line\n%s\n", line);
|
|
exit(1);
|
|
}
|
|
if ((cs->location >= (CMOS_IMAGE_BUFFER_SIZE*8)) ||
|
|
((cs->location + 16) > (CMOS_IMAGE_BUFFER_SIZE*8)))
|
|
{
|
|
fprintf(stderr, "Error - location is to big in line\n%s\n", line);
|
|
exit(1);
|
|
}
|
|
|
|
cs->tag = LB_TAG_OPTION_CHECKSUM;
|
|
cs->size = sizeof(*cs);
|
|
cs->type = CHECKSUM_PCBIOS;
|
|
|
|
cptr = (char *)cs;
|
|
cptr += cs->size;
|
|
new_cs = (struct cmos_checksum *)cptr;
|
|
}
|
|
ct->size += (cptr - (char *)(cmos_table + ct->size));
|
|
fclose(fp);
|
|
|
|
/* See if we want to output a C source file */
|
|
if(option) {
|
|
int err=0;
|
|
strncpy(tempfilename, dirname(strdup(option)), TMPFILE_LEN);
|
|
strncat(tempfilename, TMPFILE_TEMPLATE, TMPFILE_LEN);
|
|
tempfile = mkstemp(tempfilename);
|
|
if(tempfile == -1) {
|
|
perror("Error - Could not create temporary file");
|
|
exit(1);
|
|
}
|
|
|
|
if((fp=fdopen(tempfile,"w"))==NULL){
|
|
perror("Error - Could not open temporary file");
|
|
unlink(tempfilename);
|
|
exit(1);
|
|
}
|
|
|
|
/* write the header */
|
|
if(!fwrite("unsigned char option_table[] = {",1,32,fp)) {
|
|
perror("Error - Could not write image file");
|
|
fclose(fp);
|
|
unlink(tempfilename);
|
|
exit(1);
|
|
}
|
|
/* write the array values */
|
|
for(i=0; i<(int)(ct->size-1); i++) {
|
|
if(!(i%10) && !err) err=!fwrite("\n\t",1,2,fp);
|
|
sprintf(buf,"0x%02x,",cmos_table[i]);
|
|
if(!err) err=!fwrite(buf,1,5,fp);
|
|
}
|
|
/* write the end */
|
|
sprintf(buf,"0x%02x\n",cmos_table[i]);
|
|
if(!err) err=!fwrite(buf,1,4,fp);
|
|
if(!fwrite("};\n",1,3,fp)) {
|
|
perror("Error - Could not write image file");
|
|
fclose(fp);
|
|
unlink(tempfilename);
|
|
exit(1);
|
|
}
|
|
|
|
fclose(fp);
|
|
UNLINK_IF_NECESSARY(option);
|
|
if (rename(tempfilename, option)) {
|
|
fprintf(stderr, "Error - Could not write %s: ", option);
|
|
perror(NULL);
|
|
unlink(tempfilename);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* See if we also want to output a C header file */
|
|
if (header) {
|
|
struct cmos_option_table *hdr;
|
|
struct lb_record *ptr, *end;
|
|
|
|
strncpy(tempfilename, dirname(strdup(header)), TMPFILE_LEN);
|
|
strncat(tempfilename, TMPFILE_TEMPLATE, TMPFILE_LEN);
|
|
tempfile = mkstemp(tempfilename);
|
|
if(tempfile == -1) {
|
|
perror("Error - Could not create temporary file");
|
|
exit(1);
|
|
}
|
|
|
|
fp = fdopen(tempfile, "w");
|
|
if (!fp) {
|
|
perror("Error - Could not open temporary file");
|
|
unlink(tempfilename);
|
|
exit(1);
|
|
}
|
|
|
|
/* Get the cmos table header */
|
|
hdr = (struct cmos_option_table *)cmos_table;
|
|
/* Walk through the entry records */
|
|
ptr = (struct lb_record *)(cmos_table + hdr->header_length);
|
|
end = (struct lb_record *)(cmos_table + hdr->size);
|
|
for(;ptr < end; ptr = (struct lb_record *)(((char *)ptr) + ptr->size)) {
|
|
if (ptr->tag != LB_TAG_OPTION) {
|
|
continue;
|
|
}
|
|
ce = (struct cmos_entries *)ptr;
|
|
|
|
if (!is_ident((char *)ce->name)) {
|
|
fprintf(stderr, "Invalid identifier: %s\n",
|
|
ce->name);
|
|
fclose(fp);
|
|
unlink(tempfilename);
|
|
exit(1);
|
|
}
|
|
fprintf(fp, "#define CMOS_VSTART_%s %d\n",
|
|
ce->name, ce->bit);
|
|
fprintf(fp, "#define CMOS_VLEN_%s %d\n",
|
|
ce->name, ce->length);
|
|
}
|
|
|
|
if (cs != NULL) {
|
|
fprintf(fp, "\n#define LB_CKS_RANGE_START %d\n", cs->range_start / 8);
|
|
fprintf(fp, "#define LB_CKS_RANGE_END %d\n", cs->range_end / 8);
|
|
fprintf(fp, "#define LB_CKS_LOC %d\n", cs->location / 8);
|
|
} else {
|
|
fprintf(stderr, "Error - No checksums defined.\n");
|
|
fclose(fp);
|
|
unlink(tempfilename);
|
|
exit(1);
|
|
}
|
|
fclose(fp);
|
|
|
|
UNLINK_IF_NECESSARY(header);
|
|
if (rename(tempfilename, header)) {
|
|
fprintf(stderr, "Error - Could not write %s: ", header);
|
|
perror(NULL);
|
|
unlink(tempfilename);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|