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    /openrisc/trunk/rtos/ecos-2.0/packages/devs/watchdog/mn10300
    from Rev 27 to Rev 174
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Rev 27 → Rev 174

/mn10300/v2_0/cdl/watchdog_mn10300.cdl
0,0 → 1,101
# ====================================================================
#
# watchdog_mn10300.cdl
#
# eCos watchdog for VR4300/Mn10300 driver configuration data
#
# ====================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
## This file is part of eCos, the Embedded Configurable Operating System.
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
##
## eCos 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 or (at your option) any later version.
##
## eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
##
## As a special exception, if other files instantiate templates or use macros
## or inline functions from this file, or you compile this file and link it
## with other works to produce a work based on this file, this file does not
## by itself cause the resulting work to be covered by the GNU General Public
## License. However the source code for this file must still be made available
## in accordance with section (3) of the GNU General Public License.
##
## This exception does not invalidate any other reasons why a work based on
## this file might be covered by the GNU General Public License.
##
## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
## at http://sources.redhat.com/ecos/ecos-license/
## -------------------------------------------
#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s): jskov
# Contributors: jskov
# Date: 2000-05-31
#
#####DESCRIPTIONEND####
#
# ====================================================================
 
cdl_package CYGPKG_DEVICES_WATCHDOG_MN10300_MN10300 {
parent CYGPKG_IO_WATCHDOG
active_if CYGPKG_IO_WATCHDOG
display "MN10300 watchdog driver"
requires CYGPKG_HAL_MN10300
requires CYGPKG_KERNEL
hardware
compile watchdog_mn10300.cxx
implements CYGINT_WATCHDOG_HW_IMPLEMENTATIONS
active_if CYGIMP_WATCHDOG_HARDWARE
 
cdl_option CYGIMP_WATCHDOG_HARDWARE {
parent CYGPKG_IO_WATCHDOG_IMPLEMENTATION
display "Hardware watchdog"
default_value 1
implements CYGINT_WATCHDOG_IMPLEMENTATIONS
}
 
cdl_component CYGPKG_DEVICES_WATCHDOG_MN10300_MN10300_OPTIONS {
display "MN10300 watchdog build options"
flavor none
description "
Package specific build options including control over
compiler flags used only in building this package,
and details of which tests are built."
 
 
cdl_option CYGPKG_DEVICES_WATCHDOG_MN10300_MN10300_CFLAGS_ADD {
display "Additional compiler flags"
flavor data
no_define
default_value { "" }
description "
This option modifies the set of compiler flags for
building the watchdog device. These flags are used in addition
to the set of global flags."
}
 
cdl_option CYGPKG_DEVICES_WATCHDOG_MN10300_MN10300_CFLAGS_REMOVE {
display "Suppressed compiler flags"
flavor data
no_define
default_value { "" }
description "
This option modifies the set of compiler flags for
building the watchdog device. These flags are removed from
the set of global flags if present."
}
 
}
}
/mn10300/v2_0/src/watchdog_mn10300.cxx
0,0 → 1,199
//==========================================================================
//
// devs/watchdog/mn10300/mn10300/watchdog_mn10300.cxx
//
// Watchdog implementation for MN10300
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): nickg
// Contributors: nickg
// Date: 1999-02-18
// Purpose: Watchdog class implementation
// Description: Contains an implementation of the Watchdog class for use
// with the MN10300 hardware watchdog timer.
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include <pkgconf/system.h> // system configuration file
#include <pkgconf/watchdog.h> // configuration for this package
#include <pkgconf/kernel.h> // Kernel config
 
#include <cyg/kernel/ktypes.h> // base kernel types
#include <cyg/infra/cyg_trac.h> // tracing macros
#include <cyg/kernel/instrmnt.h> // instrumentation
 
#include <cyg/hal/hal_io.h> // IO register access
 
#include <cyg/kernel/intr.hxx> // interrupts
 
#include <cyg/io/watchdog.hxx> // watchdog API
 
// -------------------------------------------------------------------------
// MN10300 watchdog timer registers
 
#if defined(CYGPKG_HAL_MN10300_AM31)
 
#define WATCHDOG_BASE 0x34004000
#define WATCHDOG_COUNTER (WATCHDOG_BASE)
#define WATCHDOG_CONTROL (WATCHDOG_BASE+2)
#define WATCHDOG_RESET (WATCHDOG_BASE+4)
 
#define WATCHDOG_WDCK0 0x07
#define WATCHDOG_WDCK0_DEFAULT 0x04 // 1016.801ms cycle
#define WATCHDOG_WDRST 0x40
#define WATCHDOG_WDCNE 0x80
 
#define WATCHDOG_RESOLUTION 1016801000 // cycle time in nanoseconds
 
#elif defined(CYGPKG_HAL_MN10300_AM33)
 
#define WATCHDOG_BASE 0xC0001000
#define WATCHDOG_COUNTER (WATCHDOG_BASE)
#define WATCHDOG_CONTROL (WATCHDOG_BASE+2)
#define WATCHDOG_RESET (WATCHDOG_BASE+4)
 
#define WATCHDOG_WDCK0 0x07
#define WATCHDOG_WDCK0_DEFAULT 0x04 // 621.387ms cycle
#define WATCHDOG_WDRST 0x40
#define WATCHDOG_WDCNE 0x80
 
#define WATCHDOG_RESOLUTION 621387000 // cycle time in nanoseconds
 
#else
 
#error Unsupported MN10300 variant
 
#endif
 
// -------------------------------------------------------------------------
// Forward definitions
 
static cyg_ISR watchdog_isr;
 
// -------------------------------------------------------------------------
// Statics
 
// Interrupt object
static Cyg_Interrupt interrupt(
CYGNUM_HAL_INTERRUPT_WATCHDOG,
0,
0,
watchdog_isr,
NULL // no DSR
);
 
// -------------------------------------------------------------------------
// Constructor
 
void
Cyg_Watchdog::init_hw(void)
{
CYG_REPORT_FUNCTION();
 
// HW doesn't need init.
resolution = WATCHDOG_RESOLUTION;
CYG_REPORT_RETURN();
}
 
// -------------------------------------------------------------------------
// Start the watchdog running.
 
void
Cyg_Watchdog::start(void)
{
CYG_REPORT_FUNCTION();
 
interrupt.attach();
 
HAL_WRITE_UINT8( WATCHDOG_COUNTER, 0 );
 
// Set overflow cycle
// Enable and reset counter
HAL_WRITE_UINT8( WATCHDOG_CONTROL,
WATCHDOG_WDCK0_DEFAULT|WATCHDOG_WDCNE|WATCHDOG_WDRST);
 
CYG_REPORT_RETURN();
}
 
// -------------------------------------------------------------------------
// Reset watchdog timer. This needs to be called regularly to prevent
// the watchdog firing.
 
void
Cyg_Watchdog::reset()
{
CYG_REPORT_FUNCTION();
 
cyg_uint8 ctrl;
HAL_READ_UINT8( WATCHDOG_CONTROL, ctrl );
 
ctrl |= WATCHDOG_WDRST;
 
HAL_WRITE_UINT8( WATCHDOG_CONTROL, ctrl );
CYG_REPORT_RETURN();
}
 
// -------------------------------------------------------------------------
// ISR
 
cyg_uint32
watchdog_isr( cyg_vector vector, CYG_ADDRWORD data)
{
CYG_REPORT_FUNCTION();
// Disable interrupt just in case
interrupt.detach();
 
// Turn watchdog off to prevent it re-triggering.
HAL_WRITE_UINT8( WATCHDOG_CONTROL, 0 );
 
Cyg_Watchdog::watchdog.trigger();
 
CYG_REPORT_RETURN();
 
return Cyg_Interrupt::HANDLED;
}
 
// -------------------------------------------------------------------------
// EOF watchdog_mn10300.cxx
/mn10300/v2_0/ChangeLog
0,0 → 1,90
2000-05-31 Jesper Skov <jskov@redhat.com>
 
* cdl/watchdog_mn10300.cdl:
* src/watchdog_mn10300.cxx:
Driver moved to devs/watchdog/mn10300/mn10300. Stripped out
unrelated ChangeLog entries.
 
1999-08-24 Nick Garnett <nickg@cygnus.co.uk>
 
* src/mn10300.cxx: Turn watchdog off in Cyg_Watchdog::trigger() to
prevent it repeating.
 
1999-08-18 Nick Garnett <nickg@cygnus.co.uk>
 
* src/mn10300.cxx:
Added support for AM33 variant. Since the AM33 can only provide a
maximum watchdog cycle time of 621ms, this has motiviated the
addition of the get_resolution() call described above.
 
1999-07-14 Jesper Skov <jskov@cygnus.co.uk>
 
* src/mn10300.cxx:
Include pkgconf/kernel.h.
 
1999-02-20 Jonathan Larmour <jlarmour@cygnus.co.uk>
 
* src/mn10300.cxx:
Change CYG_VECTOR_WATCHDOG to CYGNUM_HAL_INTERRUPT_WATCHDOG in line
with HAL changes.
General QA improvements
 
Tue Oct 20 15:52:46 1998 Jonathan Larmour <jlarmour@cygnus.co.uk>
 
* src/mn10300.cxx:
Include <pkgconf/watchdog.h> so that we get CYGIMP_WATCHDOG_EMULATE
defined appropriately
 
1998-09-01 Nick Garnett <nickg@cygnus.co.uk>
 
* src/mn10300.cxx:
Added include for <cyg/kernel/sched.inl>, for scheduler lock and
unlock functions.
 
1998-07-31 Nick Garnett <nickg@cygnus.co.uk>
 
* src/PKGconf.mak:
Added mn10300.cxx to COMPILE list.
 
* src/mn10300.cxx:
Completed implementation using MN10300 watchdog timer.
 
* include/watchdog.hxx:
Renamed 'register' functions to 'install'. Added install() and
uninstall() to Cyg_Watchdog_Action class.
 
* include/pkgconf/watchdog.h:
Added this file to contain watchdog config options.
 
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####

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