Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / rtc / mcfrtc.c

diff --git a/qemu/roms/u-boot/drivers/rtc/mcfrtc.c b/qemu/roms/u-boot/drivers/rtc/mcfrtc.c
new file mode 100644 (file)
index 0000000..8961ca4
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/rtc/mcfrtc.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+
+#if defined(CONFIG_CMD_DATE)
+
+#include <command.h>
+#include <rtc.h>
+#include <asm/immap.h>
+#include <asm/rtc.h>
+
+#undef RTC_DEBUG
+
+#ifndef CONFIG_SYS_MCFRTC_BASE
+#error RTC_BASE is not defined!
+#endif
+
+#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
+#define        STARTOFTIME             1970
+
+int rtc_get(struct rtc_time *tmp)
+{
+       volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);
+
+       int rtc_days, rtc_hrs, rtc_mins;
+       int tim;
+
+       rtc_days = rtc->days;
+       rtc_hrs = rtc->hourmin >> 8;
+       rtc_mins = RTC_HOURMIN_MINUTES(rtc->hourmin);
+
+       tim = (rtc_days * 24) + rtc_hrs;
+       tim = (tim * 60) + rtc_mins;
+       tim = (tim * 60) + rtc->seconds;
+
+       to_tm(tim, tmp);
+
+       tmp->tm_yday = 0;
+       tmp->tm_isdst = 0;
+
+#ifdef RTC_DEBUG
+       printf("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);
+#endif
+
+       return 0;
+}
+
+int rtc_set(struct rtc_time *tmp)
+{
+       volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);
+
+       static int month_days[12] = {
+               31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
+       };
+       int days, i, months;
+
+       if (tmp->tm_year > 2037) {
+               printf("Unable to handle. Exceeding integer limitation!\n");
+               tmp->tm_year = 2027;
+       }
+#ifdef RTC_DEBUG
+       printf("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);
+#endif
+
+       /* calculate days by years */
+       for (i = STARTOFTIME, days = 0; i < tmp->tm_year; i++) {
+               days += 365 + isleap(i);
+       }
+
+       /* calculate days by months */
+       months = tmp->tm_mon - 1;
+       for (i = 0; i < months; i++) {
+               days += month_days[i];
+
+               if (i == 1)
+                       days += isleap(i);
+       }
+
+       days += tmp->tm_mday - 1;
+
+       rtc->days = days;
+       rtc->hourmin = (tmp->tm_hour << 8) | tmp->tm_min;
+       rtc->seconds = tmp->tm_sec;
+
+       return 0;
+}
+
+void rtc_reset(void)
+{
+       volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);
+
+       if ((rtc->cr & RTC_CR_EN) == 0) {
+               printf("real-time-clock was stopped. Now starting...\n");
+               rtc->cr |= RTC_CR_EN;
+       }
+
+       rtc->cr |= RTC_CR_SWR;
+}
+
+#endif                         /* CONFIG_MCFRTC && CONFIG_CMD_DATE */