New files -- from rtems-LM-980406 which was based on an RTEMS from 12/97.

This was called the dmv170 BSP in that source tree but since the DMV171
is now obsolete, we have transitioned to the DMV177 and have no intention
of checking compatibility with any other models.

2 files changed, 341 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/powerpc/dmv177/tod/Makefile.in b/c/src/lib/libbsp/powerpc/dmv177/tod/Makefile.in
new file mode 100644
index 0000000000..dfad6613f4
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/dmv177/tod/Makefile.in
@@ -0,0 +1,59 @@
+#
+#  $Id$
+#
+
+@SET_MAKE@
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+RTEMS_ROOT = @RTEMS_ROOT@
+PROJECT_ROOT = @PROJECT_ROOT@
+RTEMS_CUSTOM = $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP).cfg
+
+PGM=${ARCH}/tod.rel
+
+# C source names, if any, go here -- minus the .c
+C_PIECES=$(TOD_PIECES)
+C_FILES=$(C_PIECES:%=%.c)
+C_O_FILES=$(C_PIECES:%=${ARCH}/%.o)
+
+H_FILES=
+
+SRCS=$(C_FILES) $(H_FILES)
+OBJS=$(C_O_FILES)
+
+include $(RTEMS_CUSTOM)
+include $(PROJECT_ROOT)/make/leaf.cfg
+
+# First and second generation use different RTC chips :(
+TOD_PIECES=tod
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES  +=
+CPPFLAGS +=
+CFLAGS   +=
+
+LD_PATHS  +=
+LD_LIBS   +=
+LDFLAGS   +=
+
+#
+# Add your list of files to delete here.  The config files
+#  already know how to delete some stuff, so you may want
+#  to just run 'make clean' first to see what gets missed.
+#  'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+${PGM}: ${SRCS} ${OBJS}
+	$(make-rel)
+
+all:	${ARCH} $(SRCS) $(PGM)
+
+# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
+install:  all
diff --git a/c/src/lib/libbsp/powerpc/dmv177/tod/tod.c b/c/src/lib/libbsp/powerpc/dmv177/tod/tod.c
new file mode 100644
index 0000000000..800f342cf1
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/dmv177/tod/tod.c
@@ -0,0 +1,282 @@
+/*
+ * Real Time Clock (Harris ICM7170) for RTEMS 
+ *
+ *  This part is found on the second generation of this board. 
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */ 
+
+#include <rtems.h>
+#include <tod.h>
+#include <bsp.h>
+
+/*
+ * These values are programed into a register and must not be changed.
+ */
+
+#define ICM1770_CRYSTAL_FREQ_32K      0x00
+#define ICM1770_CRYSTAL_FREQ_1M       0x01
+#define ICM1770_CRYSTAL_FREQ_2M       0x02
+#define ICM1770_CRYSTAL_FREQ_4M       0x03
+
+void ICM7170_GetTOD(
+  volatile unsigned char *imc1770_regs,
+  rtems_unsigned8        icm1770_freq,
+  rtems_time_of_day      *rtc_tod
+);
+void ICM7170_SetTOD(
+  volatile unsigned char *imc1770_regs,
+  rtems_unsigned8        icm1770_freq,
+  rtems_time_of_day      *rtc_tod
+);
+
+/*
+ *  This code is dependent on the boards use of the ICM7170 RTC/NVRAM
+ *  and should remain in this file.
+ */
+
+/*  PAGE
+ *
+ *  This routine copies the time from the real time clock to RTEMS
+ * 
+ *  Input parameters:  NONE
+ * 
+ *  Output parameters:  NONE
+ *
+ *  Return values: NONE
+ */
+
+void setRealTimeToRTEMS()
+{
+  rtems_time_of_day rtc_tod;
+
+  ICM7170_GetTOD( DMV170_RTC_ADDRESS, DMV170_RTC_FREQUENCY, &rtc_tod );
+  rtems_clock_set( &rtc_tod );
+}
+
+/*  PAGE
+ *
+ *  setRealTimeFromRTEMS
+ *
+ *  This routine copies the time from RTEMS to the real time clock
+ * 
+ *  Input parameters:  NONE
+ * 
+ *  Output parameters:  NONE
+ *
+ *  Return values: NONE
+ */
+
+void setRealTimeFromRTEMS()
+{
+  rtems_time_of_day rtems_tod;
+
+  rtems_clock_get( RTEMS_CLOCK_GET_TOD, &rtems_tod );
+  ICM7170_SetTOD( DMV170_RTC_ADDRESS, DMV170_RTC_FREQUENCY, &rtems_tod );
+}
+
+/*  PAGE
+ *
+ *  checkRealTime
+ *
+ *  This routine reads the returns the variance betweent the real time and
+ *  rtems time.
+ * 
+ *  Input parameters: NONE
+ * 
+ *  Output parameters:  NONE
+ *
+ *  Return values: 
+ *    int   The differance between the real time clock and rtems time or
+ *          9999 in the event of an error.
+ */
+
+int checkRealTime()
+{
+  rtems_time_of_day rtems_tod;
+  rtems_time_of_day rtc_tod;
+
+  ICM7170_GetTOD( DMV170_RTC_ADDRESS, DMV170_RTC_FREQUENCY, &rtc_tod );
+  rtems_clock_get( RTEMS_CLOCK_GET_TOD, &rtems_tod );
+
+  if( rtems_tod.year == rtc_tod.year &&
+      rtems_tod.month == rtc_tod.month &&
+      rtems_tod.day == rtc_tod.day ) {
+     return ((rtems_tod.hour   - rtc_tod.hour) * 3600) +
+            ((rtems_tod.minute - rtc_tod.minute) * 60) +
+             (rtems_tod.second - rtc_tod.second);
+  }
+  return 9999;
+}
+
+/*
+ *  These routines are ICM7170 should be in 
+ *  a separate support library. When the chiplib
+ *  is created for RTEMS these routines will be moved.
+ */
+
+/*  PAGE
+ *
+ *  ICM7170_GetField
+ *
+ *  This routine gets a field
+ * 
+ *  Input parameters:
+ *    imc1770_regs - pointer to the register base address.
+ *    reg          - register id
+ * 
+ *  Output parameters: NONE 
+ *
+ *  Return values: value of register
+ */
+
+static int ICM7170_GetField(
+  volatile unsigned char *imc1770_regs,
+  int                     reg
+)
+{
+  unsigned char x;
+
+  x = imc1770_regs[reg*4];
+
+  return x;
+}
+
+/*  PAGE
+ *
+ *  ICM7170_SetField
+ *
+ *  This routine sets a field
+ * 
+ *  Input parameters:
+ *    imc1770_regs - pointer to the register base address.
+ *    reg          - register id
+ *    d            - data to write
+ * 
+ *  Output parameters:  NONE
+ *
+ *  Return values: NONE
+ */
+
+static void ICM7170_SetField(
+  volatile unsigned char *imc1770_regs,
+  int                     reg,
+  unsigned char             d
+)
+{
+  imc1770_regs[reg*4] = d;
+}
+
+/*  PAGE
+ *
+ *  ICM7170_GetTOD
+ *
+ *  This routine gets the real time clock time of day in rtems
+ *  time of day format.
+ * 
+ *  Input parameters:
+ *    imc1770_regs - pointer to the register base address.
+ *    icm1770_freq - oscillator frequency
+ *
+ *  Output parameters:  
+ *    rtc_tod - time of day by the real time clock     
+ *
+ *  Return values: NONE
+ */
+
+void ICM7170_GetTOD(
+  volatile unsigned char *imc1770_regs,
+  rtems_unsigned8        icm1770_freq,
+  rtems_time_of_day      *rtc_tod
+)
+{
+  int year;
+  int usec;
+  static rtems_boolean init = TRUE;
+
+  /* Initialize the clock at once prior to reading */
+  if (init ) {
+    ICM7170_SetField( imc1770_regs,  0x11, (0x0c | icm1770_freq) );
+    init = FALSE;
+  } 
+
+  usec = ICM7170_GetField( imc1770_regs, 0x00 );
+   
+  year = ICM7170_GetField( imc1770_regs, 0x06 );
+  if ( year >= 88 )
+    year += 1900;
+  else
+    year += 2000;
+
+  rtc_tod->year   = year;
+  rtc_tod->month  = ICM7170_GetField( imc1770_regs, 0x04 );
+  rtc_tod->day    = ICM7170_GetField( imc1770_regs, 0x05 );
+  rtc_tod->hour   = ICM7170_GetField( imc1770_regs, 0x01 );
+  rtc_tod->minute = ICM7170_GetField( imc1770_regs, 0x02 );
+  rtc_tod->second = ICM7170_GetField( imc1770_regs, 0x03 );
+  rtc_tod->ticks  = ICM7170_GetField( imc1770_regs, 0x00 );
+}
+
+/*  PAGE
+ *
+ *  ICM7170_SetTOD
+ *
+ *  This routine sets the real time clock
+ * 
+ *  Input parameters:
+ *    imc1770_regs - pointer to the register base address.
+ *    icm1770_freq - oscillator frequency
+ *    rtc_tod      - time of day to set     
+ * 
+ *  Output parameters:  
+ *
+ *  Return values:
+ */
+
+void ICM7170_SetTOD(
+  volatile unsigned char *imc1770_regs,
+  rtems_unsigned8        icm1770_freq,
+  rtems_time_of_day      *rtc_tod
+)
+{
+  int ticks;
+  int year;
+
+  year = rtc_tod->year;
+  if ( year >= 2088 )        /* plan ahead :) */
+    rtems_fatal_error_occurred( 0xBAD0BAD0 );
+
+  if ( year >= 2000 )
+    year -= 2000;
+  else
+    year -= 1900;
+  
+  ICM7170_SetField( imc1770_regs, 0x11, (0x04 |icm1770_freq ) );
+
+  ICM7170_SetField( imc1770_regs, 0x06, year );
+  ICM7170_SetField( imc1770_regs, 0x04, rtc_tod->month );
+  ICM7170_SetField( imc1770_regs, 0x05, rtc_tod->day );
+  ICM7170_SetField( imc1770_regs, 0x01, rtc_tod->hour );
+  ICM7170_SetField( imc1770_regs, 0x02, rtc_tod->minute );
+  ICM7170_SetField( imc1770_regs, 0x03, rtc_tod->second );
+
+  /*
+   * I don't know which day of week is 
+   *  
+   */
+  ICM7170_SetField( imc1770_regs, 0x07, 1 );
+
+  ICM7170_SetField( imc1770_regs,  0x11, (0x0c | icm1770_freq) );
+}
+
+
+
+
+
+
+
+