Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / rtc / mk48t59.c

diff --git a/qemu/roms/u-boot/drivers/rtc/mk48t59.c b/qemu/roms/u-boot/drivers/rtc/mk48t59.c
new file mode 100644 (file)
index 0000000..2164580
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/rtc/mk48t59.c
@@ -0,0 +1,180 @@
+/*
+ * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Andreas Heppel <aheppel@sysgo.de>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/*
+ * Date & Time support for the MK48T59 RTC
+ */
+
+#undef RTC_DEBUG
+
+#include <common.h>
+#include <command.h>
+#include <config.h>
+#include <rtc.h>
+#include <mk48t59.h>
+
+#if defined(CONFIG_BAB7xx)
+
+static uchar rtc_read (short reg)
+{
+       out8(RTC_PORT_ADDR0, reg & 0xFF);
+       out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF);
+       return in8(RTC_PORT_DATA);
+}
+
+static void rtc_write (short reg, uchar val)
+{
+       out8(RTC_PORT_ADDR0, reg & 0xFF);
+       out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF);
+       out8(RTC_PORT_DATA, val);
+}
+
+#elif defined(CONFIG_EVAL5200)
+
+static uchar rtc_read (short reg)
+{
+       return in8(RTC(reg));
+}
+
+static void rtc_write (short reg, uchar val)
+{
+       out8(RTC(reg),val);
+}
+
+#else
+# error Board specific rtc access functions should be supplied
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+void *nvram_read(void *dest, const short src, size_t count)
+{
+       uchar *d = (uchar *) dest;
+       short s = src;
+
+       while (count--)
+               *d++ = rtc_read(s++);
+
+       return dest;
+}
+
+void nvram_write(short dest, const void *src, size_t count)
+{
+       short d = dest;
+       uchar *s = (uchar *) src;
+
+       while (count--)
+               rtc_write(d++, *s++);
+}
+
+#if defined(CONFIG_CMD_DATE)
+
+/* ------------------------------------------------------------------------- */
+
+int rtc_get (struct rtc_time *tmp)
+{
+       uchar save_ctrl_a;
+       uchar sec, min, hour, mday, wday, mon, year;
+
+       /* Simple: freeze the clock, read it and allow updates again */
+       save_ctrl_a = rtc_read(RTC_CONTROLA);
+
+       /* Set the register to read the value. */
+       save_ctrl_a |= RTC_CA_READ;
+       rtc_write(RTC_CONTROLA, save_ctrl_a);
+
+       sec             = rtc_read (RTC_SECONDS);
+       min             = rtc_read (RTC_MINUTES);
+       hour    = rtc_read (RTC_HOURS);
+       mday    = rtc_read (RTC_DAY_OF_MONTH);
+       wday    = rtc_read (RTC_DAY_OF_WEEK);
+       mon             = rtc_read (RTC_MONTH);
+       year    = rtc_read (RTC_YEAR);
+
+       /* re-enable update */
+       save_ctrl_a &= ~RTC_CA_READ;
+       rtc_write(RTC_CONTROLA, save_ctrl_a);
+
+#ifdef RTC_DEBUG
+       printf ( "Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
+               "hr: %02x min: %02x sec: %02x\n",
+               year, mon, mday, wday,
+               hour, min, sec );
+#endif
+       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 & 0x1F);
+       tmp->tm_year = bcd2bin (year);
+       tmp->tm_wday = bcd2bin (wday & 0x07);
+       if(tmp->tm_year<70)
+               tmp->tm_year+=2000;
+       else
+               tmp->tm_year+=1900;
+       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)
+{
+       uchar save_ctrl_a;
+
+#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
+       save_ctrl_a = rtc_read(RTC_CONTROLA);
+
+       save_ctrl_a |= RTC_CA_WRITE;
+       rtc_write(RTC_CONTROLA, save_ctrl_a); /* disables the RTC to update the regs */
+
+       rtc_write (RTC_YEAR, bin2bcd(tmp->tm_year % 100));
+       rtc_write (RTC_MONTH, bin2bcd(tmp->tm_mon));
+
+       rtc_write (RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday));
+       rtc_write (RTC_DAY_OF_MONTH, bin2bcd(tmp->tm_mday));
+       rtc_write (RTC_HOURS, bin2bcd(tmp->tm_hour));
+       rtc_write (RTC_MINUTES, bin2bcd(tmp->tm_min ));
+       rtc_write (RTC_SECONDS, bin2bcd(tmp->tm_sec ));
+
+       save_ctrl_a &= ~RTC_CA_WRITE;
+       rtc_write(RTC_CONTROLA, save_ctrl_a); /* enables the RTC to update the regs */
+
+       return 0;
+}
+
+void rtc_reset (void)
+{
+       uchar control_b;
+
+       /*
+        * Start oscillator here.
+        */
+       control_b = rtc_read(RTC_CONTROLB);
+
+       control_b &= ~RTC_CB_STOP;
+       rtc_write(RTC_CONTROLB, control_b);
+}
+
+void rtc_set_watchdog(short multi, short res)
+{
+       uchar wd_value;
+
+       wd_value = RTC_WDS | ((multi & 0x1F) << 2) | (res & 0x3);
+       rtc_write(RTC_WATCHDOG, wd_value);
+}
+
+#endif