lib/efi_selftest/efi_selftest_gop.c

   1 /*
   2  * efi_selftest_gop
   3  *
   4  * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  *
   8  * Test the graphical output protocol.
   9  */
  10
  11 #include <efi_selftest.h>
  12
  13 static struct efi_boot_services *boottime;
  14 static efi_guid_t efi_gop_guid = EFI_GOP_GUID;
  15 static struct efi_gop *gop;
  16
  17 /*
  18  * Setup unit test.
  19  *
  20  * @handle:     handle of the loaded image
  21  * @systable:   system table
  22  * @return:     EFI_ST_SUCCESS for success
  23  */
  24 static int setup(const efi_handle_t handle,
  25                  const struct efi_system_table *systable)
  26 {
  27         efi_status_t ret;
  28
  29         boottime = systable->boottime;
  30
  31         ret = boottime->locate_protocol(&efi_gop_guid, NULL, (void **)&gop);
  32         if (ret != EFI_SUCCESS) {
  33                 gop = NULL;
  34                 efi_st_printf("Graphical output protocol is not available.\n");
  35         }
  36
  37         return EFI_ST_SUCCESS;
  38 }
  39
  40 /*
  41  * Tear down unit test.
  42  *
  43  * @return:     EFI_ST_SUCCESS for success
  44  */
  45 static int teardown(void)
  46 {
  47         return EFI_ST_SUCCESS;
  48 }
  49
  50 /*
  51  * Execute unit test.
  52  *
  53  * @return:     EFI_ST_SUCCESS for success
  54  */
  55 static int execute(void)
  56 {
  57         efi_status_t ret;
  58         u32 i, max_mode;
  59         efi_uintn_t size;
  60         struct efi_gop_mode_info *info;
  61
  62         if (!gop)
  63                 return EFI_ST_SUCCESS;
  64
  65         if (!gop->mode) {
  66                 efi_st_error("EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE missing\n");
  67                 return EFI_ST_FAILURE;
  68         }
  69         max_mode = gop->mode->max_mode;
  70         if (!max_mode) {
  71                 efi_st_error("No graphical mode available\n");
  72                 return EFI_ST_FAILURE;
  73         }
  74         efi_st_printf("Number of available modes: %u\n", max_mode);
  75
  76         for (i = 0; i < max_mode; ++i) {
  77                 ret = gop->query_mode(gop, i, &size, &info);
  78                 if (ret != EFI_SUCCESS) {
  79                         efi_st_printf("Could not query mode %u\n", i);
  80                         return EFI_ST_FAILURE;
  81                 }
  82                 efi_st_printf("Mode %u: %u x %u\n",
  83                               i, info->width, info->height);
  84         }
  85
  86         return EFI_ST_SUCCESS;
  87 }
  88
  89 EFI_UNIT_TEST(gop) = {
  90         .name = "graphical output",
  91         .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
  92         .setup = setup,
  93         .execute = execute,
  94         .teardown = teardown,
  95 };