"drivers" command prints all the uefi drivers on the system.
=> efi drivers D r v Driver Name Image Path ================ ==================== ========== 7ef31d30 <NULL> <built-in>
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- cmd/efidebug.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 81 insertions(+), 1 deletion(-)
diff --git a/cmd/efidebug.c b/cmd/efidebug.c index 0c7b51364753..739b7880459d 100644 --- a/cmd/efidebug.c +++ b/cmd/efidebug.c @@ -8,6 +8,7 @@ #include <charset.h> #include <common.h> #include <command.h> +#include <efi_driver.h> #include <efi_loader.h> #include <environment.h> #include <errno.h> @@ -16,6 +17,7 @@ #include <malloc.h> #include <search.h> #include <linux/ctype.h> +#include <linux/kernel.h> #include <asm/global_data.h>
#define BS systab.boottime @@ -394,6 +396,80 @@ static int do_efi_show_devices(cmd_tbl_t *cmdtp, int flag, return CMD_RET_SUCCESS; }
+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; +} + +static int do_efi_show_drivers(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + efi_handle_t *handles = NULL, *handle; + efi_uintn_t size = 0; + u16 *driver_name, *image_path_text; + efi_status_t ret; + int i; + + ret = BS->locate_handle(BY_PROTOCOL, &efi_guid_driver_binding_protocol, + NULL, &size, NULL); + if (ret == EFI_BUFFER_TOO_SMALL) { + handles = calloc(1, size); + if (!handles) + return CMD_RET_FAILURE; + + ret = BS->locate_handle(BY_PROTOCOL, + &efi_guid_driver_binding_protocol, + NULL, &size, handles); + } + if (ret != EFI_SUCCESS) { + free(handles); + return CMD_RET_FAILURE; + } + + printf("D\n"); + printf("r\n"); + printf("v Driver Name Image Path\n"); + printf("================ ==================== ==========\n"); + handle = handles; + for (i = 0; i < size / sizeof(*handle); i++) { + if (!efi_get_driver_handle_info(*handle, &driver_name, + &image_path_text)) { + if (image_path_text) + printf("%16p %-20ls %ls\n", + *handle, driver_name, image_path_text); + else + printf("%16p %-20ls <built-in>\n", + *handle, driver_name); + efi_free_pool(driver_name); + efi_free_pool(image_path_text); + } + handle++; + } + + return CMD_RET_SUCCESS; +} + static int do_efi_boot_add(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { @@ -789,6 +865,8 @@ static cmd_tbl_t cmd_efidebug_sub[] = { U_BOOT_CMD_MKENT(setvar, CONFIG_SYS_MAXARGS, 1, do_efi_set_var, "", ""), 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, + "", ""), };
/* Interpreter command to configure UEFI environment */ @@ -841,7 +919,9 @@ static char efidebug_help_text[] = " - set/delete uefi variable's value\n" " <value> may be "="..."", "=0x...", "=H...", (set) or "=" (delete)\n" "efidebug devices\n" - " - show uefi devices\n"; + " - show uefi devices\n" + "efidebug drivers\n" + " - show uefi drivers\n"; #endif
U_BOOT_CMD(