lib/efi_selftest/efi_selftest_textinput.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * efi_selftest_textinput
   4  *
   5  * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
   6  *
   7  * Provides a unit test for the EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
   8  * The Unicode character and the scan code are printed for text
   9  * input. To run the test:
  10  *
  11  *      setenv efi_selftest text input
  12  *      bootefi selftest
  13  */
  14
  15 #include <efi_selftest.h>
  16
  17 static struct efi_boot_services *boottime;
  18
  19 /*
  20  * Setup unit test.
  21  *
  22  * @handle:     handle of the loaded image
  23  * @systable:   system table
  24  * @return:     EFI_ST_SUCCESS for success
  25  */
  26 static int setup(const efi_handle_t handle,
  27                  const struct efi_system_table *systable)
  28 {
  29         boottime = systable->boottime;
  30
  31         return EFI_ST_SUCCESS;
  32 }
  33
  34 /*
  35  * Execute unit test.
  36  *
  37  * @return:     EFI_ST_SUCCESS for success
  38  */
  39 static int execute(void)
  40 {
  41         struct efi_input_key input_key = {0};
  42         efi_status_t ret;
  43         efi_uintn_t index;
  44
  45         /* Drain the console input */
  46         ret = con_in->reset(con_in, true);
  47         if (ret != EFI_SUCCESS) {
  48                 efi_st_error("Reset failed\n");
  49                 return EFI_ST_FAILURE;
  50         }
  51         ret = con_in->read_key_stroke(con_in, &input_key);
  52         if (ret != EFI_NOT_READY) {
  53                 efi_st_error("Empty buffer not reported\n");
  54                 return EFI_ST_FAILURE;
  55         }
  56
  57         efi_st_printf("Waiting for your input\n");
  58         efi_st_printf("To terminate type 'x'\n");
  59
  60         for (;;) {
  61                 /* Wait for next key */
  62                 ret = boottime->wait_for_event(1, &con_in->wait_for_key,
  63                                                &index);
  64                 if (ret != EFI_ST_SUCCESS) {
  65                         efi_st_error("WaitForEvent failed\n");
  66                         return EFI_ST_FAILURE;
  67                 }
  68                 ret = con_in->read_key_stroke(con_in, &input_key);
  69                 if (ret != EFI_SUCCESS) {
  70                         efi_st_error("ReadKeyStroke failed\n");
  71                         return EFI_ST_FAILURE;
  72                 }
  73
  74                 /* Allow 5 minutes until time out */
  75                 boottime->set_watchdog_timer(300, 0, 0, NULL);
  76
  77                 efi_st_printf("Unicode char %u (%ps), scan code %u (%ps)\n",
  78                               (unsigned int)input_key.unicode_char,
  79                               efi_st_translate_char(input_key.unicode_char),
  80                               (unsigned int)input_key.scan_code,
  81                               efi_st_translate_code(input_key.scan_code));
  82
  83                 switch (input_key.unicode_char) {
  84                 case 'x':
  85                 case 'X':
  86                         return EFI_ST_SUCCESS;
  87                 }
  88         }
  89 }
  90
  91 EFI_UNIT_TEST(textinput) = {
  92         .name = "text input",
  93         .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
  94         .setup = setup,
  95         .execute = execute,
  96         .on_request = true,
  97 };