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authorLuc Verhaegen <libv@skynet.be>2009-06-03 14:19:33 +0000
committerLuc Verhaegen <libv@skynet.be>2009-06-03 14:19:33 +0000
commita9c5ea08d07d343d32d4c083a232107bd84d8064 (patch)
treefbe58f136039f1c35ab5fea76fcd7970b63a3a3e /util/options/build_opt_tbl.c
parent9efecc5408cb72d5e547736cba90c1814539a10c (diff)
downloadcoreboot-a9c5ea08d07d343d32d4c083a232107bd84d8064.tar.xz
Revert "CMOS: Add set_option and rework get_option."
This reverts commit eb7bb49eb5b48c39baf7a256b7c74e23e3da5660. Stepan pointed out that "s" means string, which makes the following statement in this commit message invalid: "Since we either have reserved space (which we shouldn't do anything with in these two functions), an enum or a hexadecimal value, unsigned int seemed like the way to go." Signed-off-by: Luc Verhaegen <libv@skynet.be> Acked-by: Luc Verhaegen <libv@skynet.be> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4335 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/options/build_opt_tbl.c')
-rw-r--r--util/options/build_opt_tbl.c139
1 files changed, 103 insertions, 36 deletions
diff --git a/util/options/build_opt_tbl.c b/util/options/build_opt_tbl.c
index 89d14ab799..075387d1d8 100644
--- a/util/options/build_opt_tbl.c
+++ b/util/options/build_opt_tbl.c
@@ -17,52 +17,85 @@
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};
+
+
/* This routine loops through the entried and tests if any of the fields overlap
input entry_start = the memory pointer to the start of the entries.
entry_end = the byte past the entries.
output none
if there is an overlap, the routine exits, other wise it returns.
*/
-
void test_for_entry_overlaps(void *entry_start, void *entry_end)
{
+ int ptr;
char *cptr;
- struct cmos_entries *ce = NULL;
+ int buffer_bit_size;
+ int offset;
+ int byte;
+ int byte_length;
+ struct cmos_entries *ce;
unsigned char test[CMOS_IMAGE_BUFFER_SIZE];
- int i;
+ unsigned char set;
- memset(test, 0, CMOS_IMAGE_BUFFER_SIZE);
-
- for (cptr = entry_start; cptr < (char *)entry_end; cptr += ce->size) {
- ce = (struct cmos_entries *)cptr;
-
- /* Only reserved space can be larger than 32bits */
- if ((ce->length > 32) && (ce->config != 'r')) {
- fprintf(stderr, "Error: Entry %s is longer than"
- " 32bits.\n", ce->name);
- exit(1);
- }
+ /* 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 ((ce->bit + ce->length) > (CMOS_IMAGE_BUFFER_SIZE * 8)) {
- fprintf(stderr, "Error: Entry %s exceeds CMOS"
- " space.\n", ce->name);
+ if((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);
}
-
- /* see whether our bits were marked before */
- for (i = ce->bit; i < (ce->bit + ce->length); i++)
- if (test[i / 8] & (0x01 << (i % 8))) {
- printf("Error: Entry %s overlaps at bit %d.\n",
- ce->name, i);
+ 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);
}
-
- /* now mark our bits */
- for (i = ce->bit; i < (ce->bit + ce->length); i++)
- test[i / 8] |= 0x01 << (i % 8);
-
+ /* 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(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 */
@@ -103,14 +136,48 @@ static unsigned long get_number(char *line, char **ptr, int base)
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)
{
- if (((c >= 'A') && (c <='Z')) ||
- ((c >= 'a') && (c <='z')) ||
- (c == '_'))
- return 1;
- else
- return 0;
+ 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)
@@ -123,7 +190,7 @@ static int is_ident(char *str)
do {
str++;
ch = *str;
- } while(ch && (is_ident_nondigit(ch) || isdigit(ch)));
+ } while(ch && (is_ident_nondigit(ch) || (is_ident_digit(ch))));
result = (ch == '\0');
}
return result;
@@ -316,7 +383,7 @@ int main(int argc, char **argv)
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 = strtoul(&line[ptr],(char**)NULL,0);
+ 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++)