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x86: coreboot: Show the option table

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Update the cbsysinfo command to show the contents of the CMOS option
table.

While we are here, add some example output for this command, along with
mention of what the unimplemented tags are.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2024-10-14 16:32:08 -06:00
committed by Tom Rini
parent bde86903ab
commit d04c23f1c5
3 changed files with 178 additions and 1 deletions
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73
cmd/x86/cbsysinfo.c
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@@ -184,6 +184,77 @@ static const char *timestamp_name(uint32_t id)
return "<unknown>";
}
static void show_option_vals(const struct cb_cmos_option_table *tab,
uint id)
{
const void *ptr, *end;
bool found = false;
end = (void *)tab + tab->size;
for (ptr = (void *)tab + tab->header_length; ptr < end;) {
const struct cb_record *rec = ptr;
switch (rec->tag) {
case CB_TAG_OPTION_ENUM: {
const struct cb_cmos_enums *enums = ptr;
if (enums->config_id == id) {
if (!found)
printf(" ");
printf(" %d:%s", enums->value, enums->text);
found = true;
}
break;
}
break;
case CB_TAG_OPTION_DEFAULTS:
case CB_TAG_OPTION_CHECKSUM:
case CB_TAG_OPTION:
break;
default:
printf("tag %x\n", rec->tag);
break;
}
ptr += rec->size;
}
}
static void show_option_table(const struct cb_cmos_option_table *tab)
{
const void *ptr, *end;
print_ptr("option_table", tab);
if (!tab->size)
return;
printf(" Bit Len Cfg ID Name\n");
end = (void *)tab + tab->size;
for (ptr = (void *)tab + tab->header_length; ptr < end;) {
const struct cb_record *rec = ptr;
switch (rec->tag) {
case CB_TAG_OPTION: {
const struct cb_cmos_entries *entry = ptr;
printf("%4x %4x %3c %3x %-20s", entry->bit,
entry->length, entry->config, entry->config_id,
entry->name);
show_option_vals(tab, entry->config_id);
printf("\n");
break;
}
case CB_TAG_OPTION_ENUM:
case CB_TAG_OPTION_DEFAULTS:
case CB_TAG_OPTION_CHECKSUM:
break;
default:
printf("tag %x\n", rec->tag);
break;
}
ptr += rec->size;
}
}
static void show_table(struct sysinfo_t *info, bool verbose)
{
struct cb_serial *ser = info->serial;
@@ -218,7 +289,7 @@ static void show_table(struct sysinfo_t *info, bool verbose)
printf("%12d: %02x:%-8s %016llx %016llx\n", i, mr->type,
get_mem_name(mr->type), mr->base, mr->size);
}
print_ptr("option_table", info->option_table);
show_option_table(info->option_table);
print_hex("CMOS start", info->cmos_range_start);
if (info->cmos_range_start) {