GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/lib/efi_selftest/efi_selftest_rtc.c

@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * efi_selftest_rtc
+ *
+ * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * Test the real time clock runtime services.
+ */
+
+#include <efi_selftest.h>
+
+#define EFI_ST_NO_RTC "Could not read real time clock\n"
+#define EFI_ST_NO_RTC_SET "Could not set real time clock\n"
+
+static struct efi_runtime_services *runtime;
+
+/*
+ * Setup unit test.
+ *
+ * @handle:	handle of the loaded image
+ * @systable:	system table
+ * @return:	EFI_ST_SUCCESS for success
+ */
+static int setup(const efi_handle_t handle,
+		 const struct efi_system_table *systable)
+{
+	runtime = systable->runtime;
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * Execute unit test.
+ *
+ * Read and display current time.
+ * Set a new value and read it back.
+ * Set the real time clock back the current time.
+ *
+ * @return:	EFI_ST_SUCCESS for success
+ */
+static int execute(void)
+{
+	efi_status_t ret;
+	struct efi_time tm_old;
+#ifdef CONFIG_EFI_SET_TIME
+	struct efi_time tm, tm_new = {
+		.year = 2017,
+		.month = 5,
+		.day = 19,
+		.hour = 13,
+		.minute = 47,
+		.second = 53,
+	};
+#endif
+
+	/* Display current time */
+	ret = runtime->get_time(&tm_old, NULL);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error(EFI_ST_NO_RTC);
+		return EFI_ST_FAILURE;
+	}
+	efi_st_printf("Time according to real time clock: "
+		      "%.4u-%.2u-%.2u %.2u:%.2u:%.2u\n",
+		      tm_old.year, tm_old.month, tm_old.day,
+		      tm_old.hour, tm_old.minute, tm_old.second);
+#ifdef CONFIG_EFI_SET_TIME
+	ret = runtime->set_time(&tm_new);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error(EFI_ST_NO_RTC_SET);
+		return EFI_ST_FAILURE;
+	}
+	ret = runtime->get_time(&tm, NULL);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error(EFI_ST_NO_RTC);
+		return EFI_ST_FAILURE;
+	}
+	if (tm.year != tm_new.year ||
+	    tm.month != tm_new.month ||
+	    tm.day != tm_new.day ||
+	    tm.hour !=  tm_new.hour ||
+	    tm.minute != tm_new.minute ||
+	    tm.second < tm_new.second ||
+	    tm.second > tm_new.second + 2) {
+		efi_st_error(EFI_ST_NO_RTC_SET);
+		return EFI_ST_FAILURE;
+	}
+	/* Set time back to old value */
+	ret = runtime->set_time(&tm_old);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error(EFI_ST_NO_RTC_SET);
+		return EFI_ST_FAILURE;
+	}
+#endif
+
+	return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(rtc) = {
+	.name = "real time clock",
+	.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+	.setup = setup,
+	.execute = execute,
+};