"drivers" command prints all the uefi drivers on the system.
=> efi drivers Driver Name Image Path ================ ==================== ==================== 000000007ef003d0 <NULL> <built-in>
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- cmd/efidebug.c | 95 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 94 insertions(+), 1 deletion(-)
diff --git a/cmd/efidebug.c b/cmd/efidebug.c index 794e96890024..56d24a68a515 100644 --- a/cmd/efidebug.c +++ b/cmd/efidebug.c @@ -89,6 +89,95 @@ static int do_efi_show_devices(cmd_tbl_t *cmdtp, int flag, return CMD_RET_SUCCESS; }
+/** + * efi_get_driver_handle_info() - get information of UEFI driver + * + * @handle: Handle of UEFI device + * @driver_name: Driver name + * @image_path: Pointer to text of device path + * Return: 0 on success, -1 on failure + * + * Currently return no useful information as all UEFI drivers are + * built-in.. + */ +static int efi_get_driver_handle_info(efi_handle_t handle, u16 **driver_name, + u16 **image_path) +{ + struct efi_handler *handler; + struct efi_loaded_image *image; + efi_status_t ret; + + /* + * driver name + * TODO: support EFI_COMPONENT_NAME2_PROTOCOL + */ + *driver_name = NULL; + + /* image name */ + ret = efi_search_protocol(handle, &efi_guid_loaded_image, &handler); + if (ret != EFI_SUCCESS) { + *image_path = NULL; + return 0; + } + + image = handler->protocol_interface; + *image_path = efi_dp_str(image->file_path); + + return 0; +} + +/** + * do_efi_show_drivers() - show UEFI drivers + * + * @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 "drivers" sub-command. + * Show all UEFI drivers and their information. + */ +static int do_efi_show_drivers(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + efi_handle_t *handles; + efi_uintn_t num, i; + u16 *driver_name, *image_path_text; + efi_status_t ret; + + ret = EFI_CALL(BS->locate_handle_buffer( + BY_PROTOCOL, &efi_guid_driver_binding_protocol, + NULL, &num, &handles)); + if (ret != EFI_SUCCESS) + return CMD_RET_FAILURE; + + if (!num) + return CMD_RET_SUCCESS; + + printf("Driver%.*s Name Image Path\n", + EFI_HANDLE_WIDTH - 6, spc); + printf("%.*s ==================== ====================\n", + EFI_HANDLE_WIDTH, sep); + for (i = 0; i < num; i++) { + if (!efi_get_driver_handle_info(handles[i], &driver_name, + &image_path_text)) { + if (image_path_text) + printf("%p %-20ls %ls\n", handles[i], + driver_name, image_path_text); + else + printf("%p %-20ls <built-in>\n", + handles[i], driver_name); + EFI_CALL(BS->free_pool(driver_name)); + EFI_CALL(BS->free_pool(image_path_text)); + } + } + + EFI_CALL(BS->free_pool(handles)); + + return CMD_RET_SUCCESS; +} + /** * do_efi_boot_add() - set UEFI load option * @@ -586,6 +675,8 @@ static cmd_tbl_t cmd_efidebug_sub[] = { U_BOOT_CMD_MKENT(boot, CONFIG_SYS_MAXARGS, 1, do_efi_boot_opt, "", ""), U_BOOT_CMD_MKENT(devices, CONFIG_SYS_MAXARGS, 1, do_efi_show_devices, "", ""), + U_BOOT_CMD_MKENT(drivers, CONFIG_SYS_MAXARGS, 1, do_efi_show_drivers, + "", ""), };
/** @@ -646,7 +737,9 @@ static char efidebug_help_text[] = " - set/show UEFI boot order\n" "\n" "efidebug devices\n" - " - show uefi devices\n"; + " - show uefi devices\n" + "efidebug drivers\n" + " - show uefi drivers\n"; #endif
U_BOOT_CMD(