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Diffstat (limited to 'src/bios_reader')
-rw-r--r--src/bios_reader/bios_reader.c157
1 files changed, 114 insertions, 43 deletions
diff --git a/src/bios_reader/bios_reader.c b/src/bios_reader/bios_reader.c
index 9e053170..29c3edb0 100644
--- a/src/bios_reader/bios_reader.c
+++ b/src/bios_reader/bios_reader.c
@@ -59,42 +59,66 @@ struct _fake_i830 *pI830 = &I830;
#define YESNO(val) ((val) ? "yes" : "no")
+struct bdb_block {
+ uint8_t id;
+ uint16_t size;
+ void *data;
+};
+
+struct bdb_header *bdb;
static int tv_present;
static int lvds_present;
static int panel_type;
-static void *find_section(struct bdb_header *bdb, int section_id)
+static struct bdb_block *find_section(int section_id)
{
- unsigned char *base = (unsigned char *)bdb;
- int index = 0;
- uint16_t total, current_size;
- unsigned char current_id;
-
- /* skip to first section */
- index += bdb->header_size;
- total = bdb->bdb_size;
-
- /* walk the sections looking for section_id */
- while (index < total) {
- current_id = *(base + index);
- index++;
- current_size = *((uint16_t *)(base + index));
- index += 2;
- if (current_id == section_id)
- return base + index;
- index += current_size;
+ struct bdb_block *block;
+ unsigned char *base = (unsigned char *)bdb;
+ int index = 0;
+ uint16_t total, current_size;
+ unsigned char current_id;
+
+ /* skip to first section */
+ index += bdb->header_size;
+ total = bdb->bdb_size;
+
+ block = malloc(sizeof(*block));
+ if (!block) {
+ fprintf(stderr, "out of memory\n");
+ exit(-1);
+ }
+
+ /* walk the sections looking for section_id */
+ while (index < total) {
+ current_id = *(base + index);
+ index++;
+ current_size = *((uint16_t *)(base + index));
+ index += 2;
+ if (current_id == section_id) {
+ block->id = current_id;
+ block->size = current_size;
+ block->data = base + index;
+ return block;
}
+ index += current_size;
+ }
- return NULL;
+ free(block);
+ return NULL;
}
-static void dump_general_features(void *data)
+static void dump_general_features(void)
{
- struct bdb_general_features *features = data;
+ struct bdb_general_features *features;
+ struct bdb_block *block;
+
+ block = find_section(BDB_GENERAL_FEATURES);
- if (!data)
+ if (!block)
return;
+ features = block->data;
+
printf("General features block:\n");
printf("\tPanel fitting: ");
@@ -133,16 +157,24 @@ static void dump_general_features(void *data)
tv_present = 1; /* should be based on whether TV DAC exists */
lvds_present = 1; /* should be based on IS_MOBILE() */
+
+ free(block);
}
-static void dump_general_definitions(void *data)
+static void dump_general_definitions(void)
{
- struct bdb_general_definitions *defs = data;
- unsigned char *lvds_data = defs->tv_or_lvds_info;
+ struct bdb_block *block;
+ struct bdb_general_definitions *defs;
+ unsigned char *lvds_data;
+
+ block = find_section(BDB_GENERAL_DEFINITIONS);
- if (!data)
+ if (!block)
return;
+ defs = block->data;
+ lvds_data = defs->tv_or_lvds_info;
+
printf("General definitions block:\n");
printf("\tCRT DDC GMBUS addr: 0x%02x\n", defs->crt_ddc_gmbus_pin);
@@ -157,15 +189,22 @@ static void dump_general_definitions(void *data)
lvds_data += 33;
if (lvds_present)
printf("\tLFP DDC GMBUS addr: 0x%02x\n", lvds_data[19]);
+
+ free(block);
}
-static void dump_lvds_options(void *data)
+static void dump_lvds_options(void)
{
- struct bdb_lvds_options *options = data;
+ struct bdb_block *block;
+ struct bdb_lvds_options *options;
+
+ block = find_section(BDB_LVDS_OPTIONS);
- if (!data)
+ if (!block)
return;
+ options = block->data;
+
printf("LVDS options block:\n");
panel_type = options->panel_type;
@@ -178,19 +217,51 @@ static void dump_lvds_options(void *data)
printf("\tPFIT enhanced text mode: %s\n",
YESNO(options->pfit_text_mode_enhanced));
printf("\tPFIT mode: %d\n", options->pfit_mode);
+
+ free(block);
}
-static void dump_lvds_data(void *data, unsigned char *base)
+static void dump_lvds_ptr_data(void)
{
- struct bdb_lvds_lfp_data *lvds_data = data;
+ struct bdb_block *block;
+ struct bdb_lvds_lfp_data_ptrs *ptrs;
+ struct lvds_fp_timing *fp_timing;
+
+ block = find_section(BDB_LVDS_LFP_DATA_PTRS);
+ if (!block)
+ return;
+
+ ptrs = block->data;
+ fp_timing = (struct lvds_fp_timing *)((uint8_t *)bdb +
+ ptrs->ptr[panel_type].fp_timing_offset);
+
+ printf("LVDS timing pointer data:\n");
+ printf(" Number of entries: %d\n", ptrs->lvds_entries);
+
+ printf("\tpanel type %02i: %dx%d\n", panel_type, fp_timing->x_res,
+ fp_timing->y_res);
+
+ free(block);
+}
+
+static void dump_lvds_data(void)
+{
+ struct bdb_block *block;
+ struct bdb_lvds_lfp_data *lvds_data;
+ int num_entries;
int i;
- if (!data)
+ block = find_section(BDB_LVDS_LFP_DATA);
+ if (!block)
return;
+ lvds_data = block->data;
+ num_entries = block->size / sizeof(struct bdb_lvds_lfp_data_entry);
+
printf("LVDS panel data block (preferred block marked with '*'):\n");
+ printf(" Number of entries: %d\n", num_entries);
- for (i = 0; i < 16; i++) {
+ for (i = 0; i < num_entries; i++) {
struct bdb_lvds_lfp_data_entry *lfp_data = &lvds_data->data[i];
uint8_t *timing_data = (uint8_t *)&lfp_data->dvo_timing;
char marker;
@@ -198,13 +269,13 @@ static void dump_lvds_data(void *data, unsigned char *base)
if (i == panel_type)
marker = '*';
else
- continue;
+ marker = ' ';
printf("%c\tpanel type %02i: %dx%d clock %d\n", marker,
i, lfp_data->fp_timing.x_res, lfp_data->fp_timing.y_res,
_PIXEL_CLOCK(timing_data));
printf("\t\tinfo:\n");
- printf("\t\t LVDS: 0x%08lx\n",
+ printf("\t\t LVDS: 0x%08lx\n",
(unsigned long)lfp_data->fp_timing.lvds_reg_val);
printf("\t\t PP_ON_DELAYS: 0x%08lx\n",
(unsigned long)lfp_data->fp_timing.pp_on_reg_val);
@@ -224,14 +295,13 @@ static void dump_lvds_data(void *data, unsigned char *base)
_V_SYNC_OFF(timing_data),
_V_SYNC_WIDTH(timing_data));
}
-
+ free(block);
}
int main(int argc, char **argv)
{
int fd;
struct vbt_header *vbt = NULL;
- struct bdb_header *bdb;
int vbt_off, bdb_off, i;
char *filename = "bios";
struct stat finfo;
@@ -240,7 +310,7 @@ int main(int argc, char **argv)
printf("usage: %s <rom file>\n", argv[0]);
return 1;
}
-
+
filename = argv[1];
fd = open(filename, O_RDONLY);
@@ -281,10 +351,11 @@ int main(int argc, char **argv)
printf("BDB sig: %16s\n", bdb->signature);
printf("BDB vers: %d.%d\n", bdb->version / 100, bdb->version % 100);
- dump_general_features(find_section(bdb, BDB_GENERAL_FEATURES));
- dump_general_definitions(find_section(bdb, BDB_GENERAL_DEFINITIONS));
- dump_lvds_options(find_section(bdb, BDB_LVDS_OPTIONS));
- dump_lvds_data(find_section(bdb, BDB_LVDS_LFP_DATA), (unsigned char *)bdb);
+ dump_general_features();
+ dump_general_definitions();
+ dump_lvds_options();
+ dump_lvds_data();
+ dump_lvds_ptr_data();
return 0;
}