4 * Copyright (c) 2016 Google, Inc
5 * Written by Simon Glass <sjg@chromium.org>
7 * SPDX-License-Identifier: GPL-2.0+
9 * This program demonstrates calling a boottime service.
10 * It writes a greeting and the load options to the console.
16 static const efi_guid_t loaded_image_guid = LOADED_IMAGE_GUID;
19 * Entry point of the EFI application.
21 * @handle handle of the loaded image
22 * @systable system table
25 efi_status_t EFIAPI efi_main(efi_handle_t handle,
26 struct efi_system_table *systable)
28 struct efi_simple_text_output_protocol *con_out = systable->con_out;
29 struct efi_boot_services *boottime = systable->boottime;
30 struct efi_loaded_image *loaded_image;
33 con_out->output_string(con_out, L"Hello, world!\n");
35 /* Get the loaded image protocol */
36 ret = boottime->handle_protocol(handle, &loaded_image_guid,
37 (void **)&loaded_image);
38 if (ret != EFI_SUCCESS) {
39 con_out->output_string(con_out,
40 L"Cannot open loaded image protocol\n");
43 /* Output the load options */
44 con_out->output_string(con_out, L"Load options: ");
45 if (loaded_image->load_options_size && loaded_image->load_options)
46 con_out->output_string(con_out,
47 (u16 *)loaded_image->load_options);
49 con_out->output_string(con_out, L"<none>");
50 con_out->output_string(con_out, L"\n");
53 boottime->exit(handle, ret, 0, NULL);
55 /* We should never arrive here */