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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2017 General Electric Company
+ */
+
+#include <common.h>
+#include <env.h>
+#include <i2c.h>
+#include <rtc.h>
+
+void check_time(void)
+{
+	int ret, i;
+	struct rtc_time tm;
+	u8 retry = 3;
+
+	unsigned int current_i2c_bus = i2c_get_bus_num();
+
+	ret = i2c_set_bus_num(CONFIG_SYS_RTC_BUS_NUM);
+	if (ret < 0)
+		return;
+
+	rtc_init();
+
+	for (i = 0; i < retry; i++) {
+		ret = rtc_get(&tm);
+		if (!ret || ret == -EINVAL)
+			break;
+	}
+
+	if (ret < 0)
+		env_set("rtc_status", "RTC_ERROR");
+
+	if (tm.tm_year > 2037) {
+		tm.tm_sec  = 0;
+		tm.tm_min  = 0;
+		tm.tm_hour = 0;
+		tm.tm_mday = 1;
+		tm.tm_wday = 2;
+		tm.tm_mon  = 1;
+		tm.tm_year = 2036;
+
+		for (i = 0; i < retry; i++) {
+			ret = rtc_set(&tm);
+			if (!ret)
+				break;
+		}
+
+		if (ret < 0)
+			env_set("rtc_status", "RTC_ERROR");
+	}
+
+	i2c_set_bus_num(current_i2c_bus);
+}
+