/**
* do_efi_show_devices() - show UEFI devices
*
* @cmdtp: Command table
* @flag: Command flag
* @argc: Number of arguments
* @argv: Argument array
* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
*
* Implement efidebug "devices" sub-command.
* Show all UEFI devices and their information.
*/
static int do_efi_show_devices(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
efi_handle_t *handles;
efi_uintn_t num, i;
u16 *dev_path_text;
efi_status_t ret;
ret = EFI_CALL(BS->locate_handle_buffer(ALL_HANDLES, NULL, NULL,
&num, &handles));
if (ret != EFI_SUCCESS)
return CMD_RET_FAILURE;
if (!num)
return CMD_RET_SUCCESS;
printf("Device%.*s Device Path\n", EFI_HANDLE_WIDTH - 6, spc);
printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep);
for (i = 0; i < num; i++) {
if (!efi_get_device_handle_info(handles[i], &dev_path_text)) {
printf("%p %ls\n", handles[i], dev_path_text);
efi_free_pool(dev_path_text);
}
}
EFI_CALL(BS->free_pool(handles));
return CMD_RET_SUCCESS;
}
/*
* Tear down unit test.
*
* @return: EFI_ST_SUCCESS for success
*/
static int teardown(void)
{
efi_status_t r = EFI_ST_SUCCESS;
if (image) {
r = efi_free_pool(image);
if (r != EFI_SUCCESS) {
efi_st_error("Failed to free image\n");
return EFI_ST_FAILURE;
}
}
return r;
}
/**
* show_efi_boot_opt_data() - dump UEFI load option
*
* @id: Load option number
* @data: Value of UEFI load option variable
*
* Decode the value of UEFI load option variable and print information.
*/
static void show_efi_boot_opt_data(int id, void *data)
{
struct efi_load_option lo;
char *label, *p;
size_t label_len16, label_len;
u16 *dp_str;
efi_deserialize_load_option(&lo, data);
label_len16 = u16_strlen(lo.label);
label_len = utf16_utf8_strnlen(lo.label, label_len16);
label = malloc(label_len + 1);
if (!label)
return;
p = label;
utf16_utf8_strncpy(&p, lo.label, label_len16);
printf("Boot%04X:\n", id);
printf("\tattributes: %c%c%c (0x%08x)\n",
/* ACTIVE */
lo.attributes & LOAD_OPTION_ACTIVE ? 'A' : '-',
/* FORCE RECONNECT */
lo.attributes & LOAD_OPTION_FORCE_RECONNECT ? 'R' : '-',
/* HIDDEN */
lo.attributes & LOAD_OPTION_HIDDEN ? 'H' : '-',
lo.attributes);
printf("\tlabel: %s\n", label);
dp_str = efi_dp_str(lo.file_path);
printf("\tfile_path: %ls\n", dp_str);
efi_free_pool(dp_str);
printf("\tdata: %s\n", lo.optional_data);
free(label);
}
/**
* do_efi_boot_add() - set UEFI load option
*
* @cmdtp: Command table
* @flag: Command flag
* @argc: Number of arguments
* @argv: Argument array
* Return: CMD_RET_SUCCESS on success,
* CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
*
* Implement efidebug "boot add" sub-command.
* Create or change UEFI load option.
* - boot add <id> <label> <interface> <devnum>[:<part>] <file> <options>
*/
static int do_efi_boot_add(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
int id;
char *endp;
char var_name[9];
u16 var_name16[9], *p;
efi_guid_t guid;
size_t label_len, label_len16;
u16 *label;
struct efi_device_path *device_path = NULL, *file_path = NULL;
struct efi_load_option lo;
void *data = NULL;
efi_uintn_t size;
int ret;
if (argc < 6 || argc > 7)
return CMD_RET_USAGE;
id = (int)simple_strtoul(argv[1], &endp, 16);
if (*endp != '\0' || id > 0xffff)
return CMD_RET_USAGE;
sprintf(var_name, "Boot%04X", id);
p = var_name16;
utf8_utf16_strncpy(&p, var_name, 9);
guid = efi_global_variable_guid;
/* attributes */
lo.attributes = LOAD_OPTION_ACTIVE; /* always ACTIVE */
/* label */
label_len = strlen(argv[2]);
label_len16 = utf8_utf16_strnlen(argv[2], label_len);
label = malloc((label_len16 + 1) * sizeof(u16));
if (!label)
return CMD_RET_FAILURE;
lo.label = label; /* label will be changed below */
utf8_utf16_strncpy(&label, argv[2], label_len);
/* file path */
ret = efi_dp_from_name(argv[3], argv[4], argv[5], &device_path,
&file_path);
if (ret != EFI_SUCCESS) {
printf("Cannot create device path for \"%s %s\"\n",
argv[3], argv[4]);
ret = CMD_RET_FAILURE;
goto out;
}
lo.file_path = file_path;
lo.file_path_length = efi_dp_size(file_path)
+ sizeof(struct efi_device_path); /* for END */
/* optional data */
lo.optional_data = (u8 *)(argc == 6 ? "" : argv[6]);
size = efi_serialize_load_option(&lo, (u8 **)&data);
if (!size) {
ret = CMD_RET_FAILURE;
goto out;
}
ret = EFI_CALL(RT->set_variable(var_name16, &guid,
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
size, data));
ret = (ret == EFI_SUCCESS ? CMD_RET_SUCCESS : CMD_RET_FAILURE);
out:
free(data);
efi_free_pool(device_path);
efi_free_pool(file_path);
free(lo.label);
return ret;
}
