coreboot-kgpe-d16/util/options/build_opt_tbl.c

638 lines
19 KiB
C

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