1 files changed, 83 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/drivers/rtc/davinci.c b/qemu/roms/u-boot/drivers/rtc/davinci.c
new file mode 100644
index 000000000..f862e2f95
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/rtc/davinci.c
@@ -0,0 +1,83 @@
+/*
+ * (C) Copyright 2011 DENX Software Engineering GmbH
+ * Heiko Schocher <hs@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+#include <asm/io.h>
+#include <asm/davinci_rtc.h>
+
+#if defined(CONFIG_CMD_DATE)
+int rtc_get(struct rtc_time *tmp)
+{
+	struct davinci_rtc *rtc = (struct davinci_rtc *)DAVINCI_RTC_BASE;
+	unsigned long sec, min, hour, mday, wday, mon_cent, year;
+	unsigned long status;
+
+	status = readl(&rtc->status);
+	if ((status & RTC_STATE_RUN) != RTC_STATE_RUN) {
+		printf("RTC doesn't run\n");
+		return -1;
+	}
+	if ((status & RTC_STATE_BUSY) == RTC_STATE_BUSY)
+		udelay(20);
+
+	sec	= readl(&rtc->second);
+	min	= readl(&rtc->minutes);
+	hour	= readl(&rtc->hours);
+	mday	= readl(&rtc->day);
+	wday	= readl(&rtc->dotw);
+	mon_cent = readl(&rtc->month);
+	year	= readl(&rtc->year);
+
+	debug("Get RTC year: %02lx mon/cent: %02lx mday: %02lx wday: %02lx "
+		"hr: %02lx min: %02lx sec: %02lx\n",
+		year, mon_cent, mday, wday,
+		hour, min, sec);
+
+	tmp->tm_sec  = bcd2bin(sec  & 0x7F);
+	tmp->tm_min  = bcd2bin(min  & 0x7F);
+	tmp->tm_hour = bcd2bin(hour & 0x3F);
+	tmp->tm_mday = bcd2bin(mday & 0x3F);
+	tmp->tm_mon  = bcd2bin(mon_cent & 0x1F);
+	tmp->tm_year = bcd2bin(year) + 2000;
+	tmp->tm_wday = bcd2bin(wday & 0x07);
+	tmp->tm_yday = 0;
+	tmp->tm_isdst = 0;
+
+	debug("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
+		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+
+	return 0;
+}
+
+int rtc_set(struct rtc_time *tmp)
+{
+	struct davinci_rtc *rtc = (struct davinci_rtc *)DAVINCI_RTC_BASE;
+
+	debug("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
+		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+	writel(bin2bcd(tmp->tm_year % 100), &rtc->year);
+	writel(bin2bcd(tmp->tm_mon), &rtc->month);
+
+	writel(bin2bcd(tmp->tm_wday), &rtc->dotw);
+	writel(bin2bcd(tmp->tm_mday), &rtc->day);
+	writel(bin2bcd(tmp->tm_hour), &rtc->hours);
+	writel(bin2bcd(tmp->tm_min), &rtc->minutes);
+	writel(bin2bcd(tmp->tm_sec), &rtc->second);
+	return 0;
+}
+
+void rtc_reset(void)
+{
+	struct davinci_rtc *rtc = (struct davinci_rtc *)DAVINCI_RTC_BASE;
+
+	/* run RTC counter */
+	writel(0x01, &rtc->ctrl);
+}
+#endif