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First cut at configuration table for libchip RTC. At this point, we

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are pretending that the DMV177 has an M48T08.
This commit is contained in:
Joel Sherrill
1998-07-28 23:16:34 +00:00
parent a1f514f197
commit 9968efbc7e
4 changed files with 117 additions and 275 deletions
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2
c/src/lib/libbsp/powerpc/dmv177/tod/Makefile.in
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@@ -4,7 +4,7 @@
@SET_MAKE@
srcdir = @srcdir@
VPATH = @srcdir@
VPATH = @srcdir@:@srcdir@/../../../shared
RTEMS_ROOT = @top_srcdir@
PROJECT_ROOT = @PROJECT_ROOT@

58
c/src/lib/libbsp/powerpc/dmv177/tod/config.c Normal file
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@@ -0,0 +1,58 @@
/*
* This file contains the RTC driver table for the DY-4 DMV177.
*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994, 1997.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* $Id$
*/
#include <bsp.h>
#include <libchip/rtc.h>
#include <libchip/m48t08.h>
/*
* Configuration specific probe routines
*
* NOTE: There are no DMV177 specific configuration routines. These
* routines could be written to dynamically determine what type
* of real-time clock is on this board. This would be useful for
* a BSP supporting multiple board models.
*/
/* NONE CURRENTLY PROVIDED */
/*
* The following table configures the RTC drivers used in this BSP.
*
* The first entry which, when probed, is available, will be named /dev/rtc,
* all others being given the name indicated.
*/
rtc_tbl RTC_Table[] = {
{
"/dev/rtc0", /* sDeviceName */
RTC_M48T08, /* deviceType */
MC68681_FUNCTIONS, /* pDeviceFns */
rtc_probe, /* deviceProbe */
NULL, /* pDeviceParams */
DMV170_RTC_ADDRESS, /* ulCtrlPort1 */
NULL, /* ulCtrlPort2 */
NULL, /* ulDataPort */
m48t08_get_register, /* getRegister */
m48t08_set_register, /* setRegister */
NULL, /* unused */ /* setData */
}
};
/*
* Declare some information used by the RTC driver
*/
#define NUM_RTCS (sizeof(RTC_Table)/sizeof(rtc_tbl))
unsigned long RTC_Count = NUM_RTCS;
rtems_device_minor_number RTC_Minor;

274
c/src/lib/libbsp/powerpc/dmv177/tod/tod.c
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@@ -1,274 +0,0 @@
/*
* 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 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) );
}

58
c/src/lib/libbsp/powerpc/dmv177/tod/todcfg.c Normal file
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@@ -0,0 +1,58 @@
/*
* This file contains the RTC driver table for the DY-4 DMV177.
*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994, 1997.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* $Id$
*/
#include <bsp.h>
#include <libchip/rtc.h>
#include <libchip/m48t08.h>
/*
* Configuration specific probe routines
*
* NOTE: There are no DMV177 specific configuration routines. These
* routines could be written to dynamically determine what type
* of real-time clock is on this board. This would be useful for
* a BSP supporting multiple board models.
*/
/* NONE CURRENTLY PROVIDED */
/*
* The following table configures the RTC drivers used in this BSP.
*
* The first entry which, when probed, is available, will be named /dev/rtc,
* all others being given the name indicated.
*/
rtc_tbl RTC_Table[] = {
{
"/dev/rtc0", /* sDeviceName */
RTC_M48T08, /* deviceType */
MC68681_FUNCTIONS, /* pDeviceFns */
rtc_probe, /* deviceProbe */
NULL, /* pDeviceParams */
DMV170_RTC_ADDRESS, /* ulCtrlPort1 */
NULL, /* ulCtrlPort2 */
NULL, /* ulDataPort */
m48t08_get_register, /* getRegister */
m48t08_set_register, /* setRegister */
NULL, /* unused */ /* setData */
}
};
/*
* Declare some information used by the RTC driver
*/
#define NUM_RTCS (sizeof(RTC_Table)/sizeof(rtc_tbl))
unsigned long RTC_Count = NUM_RTCS;
rtems_device_minor_number RTC_Minor;