lib/efi_selftest/efi_selftest_gop.c

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