[Strange. I _did_ check these in before. Seems SF restored an old
version of the repository???]
* Patch by Reinhard Meyer, 09 Jan 2004:
- add RTC support for MPC5200 based boards (requires RTC_XTAL)
* Add support for IDE LED on BMS2003 board
(exclusive with status LED!)
* Add support for PS/2 keyboard (used with PS/2 multiplexor on
BMS2003 board)
* Patches by Reinhard Meyer, 4 Jan 2004 + 7 Jan 2004:
Add common files for "emk" boards
diff --git a/rtc/mpc5xxx.c b/rtc/mpc5xxx.c
new file mode 100644
index 0000000..2053df1
--- /dev/null
+++ b/rtc/mpc5xxx.c
@@ -0,0 +1,140 @@
+/*
+ * (C) Copyright 2004
+ * Reinhard Meyer, EMK Elektronik GmbH
+ * r.meyer@emk-elektronik.de
+ * www.emk-elektronik.de
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*****************************************************************************
+ * Date & Time support for internal RTC of MPC52xx
+ *****************************************************************************/
+/*#define DEBUG*/
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+
+#if defined(CONFIG_RTC_MPC5200) && (CONFIG_COMMANDS & CFG_CMD_DATE)
+
+/*****************************************************************************
+ * this structure should be defined in mpc5200.h ...
+ *****************************************************************************/
+typedef struct rtc5200 {
+ volatile ulong tsr; /* MBAR+0x800: time set register */
+ volatile ulong dsr; /* MBAR+0x804: data set register */
+ volatile ulong nysr; /* MBAR+0x808: new year and stopwatch register */
+ volatile ulong aier; /* MBAR+0x80C: alarm and interrupt enable register */
+ volatile ulong ctr; /* MBAR+0x810: current time register */
+ volatile ulong cdr; /* MBAR+0x814: current data register */
+ volatile ulong asir; /* MBAR+0x818: alarm and stopwatch interupt register */
+ volatile ulong piber; /* MBAR+0x81C: periodic interrupt and bus error register */
+ volatile ulong trdr; /* MBAR+0x820: test register/divides register */
+} RTC5200;
+
+#define RTC_SET 0x02000000
+#define RTC_PAUSE 0x01000000
+
+/*****************************************************************************
+ * get time
+ *****************************************************************************/
+void rtc_get (struct rtc_time *tmp)
+{
+ RTC5200 *rtc = (RTC5200 *) (CFG_MBAR+0x800);
+ ulong time, date, time2;
+
+ /* read twice to avoid getting a funny time when the second is just changing */
+ do {
+ time = rtc->ctr;
+ date = rtc->cdr;
+ time2 = rtc->ctr;
+ } while (time != time2);
+
+ tmp->tm_year = date & 0xfff;
+ tmp->tm_mon = (date >> 24) & 0xf;
+ tmp->tm_mday = (date >> 16) & 0x1f;
+ tmp->tm_wday = (date >> 21) & 7;
+ /* sunday is 7 in 5200 but 0 in rtc_time */
+ if (tmp->tm_wday == 7)
+ tmp->tm_wday = 0;
+ tmp->tm_hour = (time >> 16) & 0x1f;
+ tmp->tm_min = (time >> 8) & 0x3f;
+ tmp->tm_sec = time & 0x3f;
+
+ 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);
+}
+
+/*****************************************************************************
+ * set time
+ *****************************************************************************/
+void rtc_set (struct rtc_time *tmp)
+{
+ RTC5200 *rtc = (RTC5200 *) (CFG_MBAR+0x800);
+ ulong time, date, year;
+
+ 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);
+
+ time = (tmp->tm_hour << 16) | (tmp->tm_min << 8) | tmp->tm_sec;
+ date = (tmp->tm_mon << 16) | tmp->tm_mday;
+ if (tmp->tm_wday == 0)
+ date |= (7 << 8);
+ else
+ date |= (tmp->tm_wday << 8);
+ year = tmp->tm_year;
+
+ /* mask unwanted bits that might show up when rtc_time is corrupt */
+ time &= 0x001f3f3f;
+ date &= 0x001f071f;
+ year &= 0x00000fff;
+
+ /* pause and set the RTC */
+ rtc->nysr = year;
+ rtc->dsr = date | RTC_PAUSE;
+ udelay (1000);
+ rtc->dsr = date | RTC_PAUSE | RTC_SET;
+ udelay (1000);
+ rtc->dsr = date | RTC_PAUSE;
+ udelay (1000);
+ rtc->dsr = date;
+ udelay (1000);
+
+ rtc->tsr = time | RTC_PAUSE;
+ udelay (1000);
+ rtc->tsr = time | RTC_PAUSE | RTC_SET;
+ udelay (1000);
+ rtc->tsr = time | RTC_PAUSE;
+ udelay (1000);
+ rtc->tsr = time;
+ udelay (1000);
+}
+
+/*****************************************************************************
+ * reset rtc circuit
+ *****************************************************************************/
+void rtc_reset (void)
+{
+ return; /* nothing to do */
+}
+
+#endif /* CONFIG_RTC_MPC5200 && CFG_CMD_DATE */