"drivers" command prints all the uefi drivers on the system. => efi drivers Driver Name Image Path ============================================ (unknown) <NULL>+(not found) guid: 18a031ab-b443-4d1a-a5c0-0c09261e9f71
Currently, no useful information can be printed.
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- cmd/efishell.c | 95 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 94 insertions(+), 1 deletion(-)
diff --git a/cmd/efishell.c b/cmd/efishell.c index f4fa3fdf28a7..2f54f7803ac5 100644 --- a/cmd/efishell.c +++ b/cmd/efishell.c @@ -346,6 +346,95 @@ static int do_efi_show_devices(int argc, char * const argv[]) return CMD_RET_SUCCESS; }
+static int efi_get_driver_handle_info(efi_handle_t handle, u16 **name, + u16 **devname, u16 **filename) +{ + struct efi_driver_binding_protocol *binding; + struct efi_loaded_image *image; + efi_status_t ret; + + ret = bs->open_protocol(handle, &efi_guid_driver_binding_protocol, + (void **)&binding, NULL, NULL, + EFI_OPEN_PROTOCOL_GET_PROTOCOL); + if (ret != EFI_SUCCESS) + return -1; + + ret = bs->open_protocol(binding->image_handle, &efi_guid_loaded_image, + (void **)&image, NULL /* FIXME */, NULL, + EFI_OPEN_PROTOCOL_GET_PROTOCOL); + if (ret != EFI_SUCCESS) + goto e_out; + + /* + * TODO: + * handle image->device_handle, + * use append_device_path() + */ + *devname = NULL; + *filename = efi_dp_str(image->file_path); + + return 0; + +e_out: + *devname = NULL; + *filename = L"(not found)"; + + return 0; +} + +static int do_efi_show_drivers(int argc, char * const argv[]) +{ + efi_handle_t *handles = NULL, *handle; + efi_uintn_t size = 0; + u16 *drvname, *devname, *filename; + 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("Driver Name Image Path\n"); + printf("============================================\n"); + handle = handles; + for (i = 0; i < size / sizeof(*handle); i++) { + if (!efi_get_driver_handle_info(*handle, &drvname, &devname, + &filename)) { + printf("%-16s%ls+%ls\n", + "(unknown)", devname, filename); + efi_free_pool(devname); + efi_free_pool(filename); + + /* TODO: no other info */ + struct efi_object *efiobj; + struct list_head *lhandle; + struct efi_handler *protocol; + + efiobj = efi_search_obj(*handle); + list_for_each(lhandle, &efiobj->protocols) { + protocol = list_entry(lhandle, + struct efi_handler, link); + printf(" guid: %pUl\n", protocol->guid); + } + } + handle++; + } + + return CMD_RET_SUCCESS; +} + static int do_efi_boot_add(int argc, char * const argv[]) { int id; @@ -726,6 +815,8 @@ static int do_efishell(cmd_tbl_t *cmdtp, int flag, return do_efi_set_var(argc, argv); else if (!strcmp(command, "devices")) return do_efi_show_devices(argc, argv); + else if (!strcmp(command, "drivers")) + return do_efi_show_drivers(argc, argv); else return CMD_RET_USAGE; } @@ -749,7 +840,9 @@ static char efishell_help_text[] = " - set/delete uefi variable's value\n" " <value> may be "="..."", "=0x..." (set) or "=" (delete)\n" "efishell devices\n" - " - show uefi devices\n"; + " - show uefi devices\n" + "efishell drivers\n" + " - show uefi drivers\n"; #endif
U_BOOT_CMD(