xref: /openbmc/u-boot/lib/efi_selftest/efi_selftest_rtc.c (revision 406fd7e207d3593f150079514a371dccdc651ce7)
1  // SPDX-License-Identifier: GPL-2.0+
2  /*
3   * efi_selftest_rtc
4   *
5   * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
6   *
7   * Test the real time clock runtime services.
8   */
9  
10  #include <efi_selftest.h>
11  
12  #define EFI_ST_NO_RTC "Could not read real time clock\n"
13  
14  static struct efi_runtime_services *runtime;
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   */
setup(const efi_handle_t handle,const struct efi_system_table * systable)23  static int setup(const efi_handle_t handle,
24  		 const struct efi_system_table *systable)
25  {
26  	runtime = systable->runtime;
27  	return EFI_ST_SUCCESS;
28  }
29  
30  /*
31   * Execute unit test.
32   *
33   * Display current time.
34   *
35   * @return:	EFI_ST_SUCCESS for success
36   */
execute(void)37  static int execute(void)
38  {
39  	efi_status_t ret;
40  	struct efi_time tm;
41  
42  	/* Display current time */
43  	ret = runtime->get_time(&tm, NULL);
44  	if (ret != EFI_SUCCESS) {
45  #ifdef CONFIG_CMD_DATE
46  		efi_st_error(EFI_ST_NO_RTC);
47  		return EFI_ST_FAILURE;
48  #else
49  		efi_st_todo(EFI_ST_NO_RTC);
50  		return EFI_ST_SUCCESS;
51  #endif
52  	} else {
53  		efi_st_printf("Time according to real time clock: "
54  			      "%.4u-%.2u-%.2u %.2u:%.2u:%.2u\n",
55  			      tm.year, tm.month, tm.day,
56  			      tm.hour, tm.minute, tm.second);
57  	}
58  
59  	return EFI_ST_SUCCESS;
60  }
61  
62  EFI_UNIT_TEST(rtc) = {
63  	.name = "real time clock",
64  	.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
65  	.setup = setup,
66  	.execute = execute,
67  };
68