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chid: Add subcommand for dealing with variants

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Add a 'chid list' command to display the values for all CHID variants.
Also add 'chid detail' to see all details about a variant.

Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2025-08-31 15:45:49 -06:00
parent 89d735d8f2
commit 7737e3c1d5
5 changed files with 191 additions and 2 deletions
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95
cmd/chid.c
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@@ -8,6 +8,8 @@
#include <chid.h>
#include <command.h>
#include <vsprintf.h>
#include <linux/bitops.h>
#include <u-boot/uuid.h>
static int do_chid_show(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
@@ -36,8 +38,97 @@ static int do_chid_show(struct cmd_tbl *cmdtp, int flag, int argc,
return 0;
}
static int do_chid_list(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char chid_str[UUID_STR_LEN + 1];
u8 chid_bytes[UUID_LEN];
struct chid_data chid;
int variant, ret;
ret = chid_from_smbios(&chid);
if (ret) {
printf("Failed to get CHID data from SMBIOS (err=%d)\n", ret);
return CMD_RET_FAILURE;
}
for (variant = 0; variant < CHID_VARIANT_COUNT; variant++) {
ret = chid_generate(variant, &chid, chid_bytes);
if (ret) {
printf("%s: <generation failed>\n",
chid_get_variant_name(variant));
continue;
}
uuid_bin_to_str(chid_bytes, chid_str, UUID_STR_FORMAT_STD);
printf("%s: %s\n", chid_get_variant_name(variant), chid_str);
}
return 0;
}
static int do_chid_detail(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char chid_str[UUID_STR_LEN + 1];
u8 chid_bytes[UUID_LEN];
struct chid_data chid;
int fields, field;
int variant, ret;
bool first;
if (argc != 2) {
printf("Usage: chid show <variant>\n");
return CMD_RET_USAGE;
}
variant = simple_strtol(argv[1], NULL, 10);
if (variant < 0 || variant >= CHID_VARIANT_COUNT) {
printf("Invalid variant %d (must be 0-%d)\n", variant,
CHID_VARIANT_COUNT - 1);
return CMD_RET_FAILURE;
}
ret = chid_from_smbios(&chid);
if (ret) {
printf("Failed to get CHID data from SMBIOS (err=%dE)\n", ret);
return CMD_RET_FAILURE;
}
ret = chid_generate(variant, &chid, chid_bytes);
if (ret) {
printf("Failed to generate CHID variant %d (err=%dE)\n",
variant, ret);
return CMD_RET_FAILURE;
}
uuid_bin_to_str(chid_bytes, chid_str, UUID_STR_FORMAT_STD);
printf("%s: %s\n", chid_get_variant_name(variant), chid_str);
/* Show which fields are used */
printf("Fields: ");
fields = chid_get_variant_fields(variant);
first = true;
for (field = 0; field < CHID_COUNT; field++) {
if (fields & BIT(field)) {
if (!first)
printf(" + ");
printf("%s", chid_get_field_name(field));
first = 0;
}
}
printf("\n");
return 0;
}
U_BOOT_LONGHELP(chid,
"show - Show CHID data extracted from SMBIOS");
"list - List all CHID variants\n"
"show - Show CHID data extracted from SMBIOS\n"
"detail <variant> - Show details for a specific CHID variant (0-14)");
U_BOOT_CMD_WITH_SUBCMDS(chid, "Computer Hardware ID utilities", chid_help_text,
U_BOOT_SUBCMD_MKENT(show, 1, 1, do_chid_show));
U_BOOT_SUBCMD_MKENT(list, 1, 1, do_chid_list),
U_BOOT_SUBCMD_MKENT(show, 1, 1, do_chid_show),
U_BOOT_SUBCMD_MKENT(detail, 2, 1, do_chid_detail));