watchdog_at91wdtc.cdl

开放源码实时操作系统源码.

# ====================================================================
#
#      watchdog_at91wdtc.cdl
#
#      eCos watchdog for ARM AT91 WDTC 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.
## Copyright (C) 2003 Nick Garnett <[e-mail]>
## Copyright (C) 2006 Andrew Lunn ([e-mail]>
##
## 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.
## -------------------------------------------
#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      tkoeller
# Contributors:   tkoeller, nickg, asl
# Date:           2006-02-18
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_DEVICES_WATCHDOG_ARM_AT91WDTC {
    parent        CYGPKG_IO_WATCHDOG
    active_if     CYGPKG_IO_WATCHDOG
    display       "ARM AT91 WDTC watchdog driver"
    requires      CYGPKG_HAL_ARM_AT91
    requires      CYGPKG_KERNEL
    hardware
    define_header devs_watchdog_arm_at91wdtc.h
    compile       watchdog_at91wdtc.cxx
    implements    CYGINT_WATCHDOG_HW_IMPLEMENTATIONS
    active_if     CYGIMP_WATCHDOG_HARDWARE
    description   "
      This package uses the watchdog device integrated
      in the AT91 to execute a predefined action if the
      application fails to call the reset function for
      longer than a given timeout interval. This package
      currently only supports the AT91SAM7S device which 
      use the Watchdog Timer Controller."

    cdl_option CYGIMP_WATCHDOG_HARDWARE {
        parent	      CYGPKG_IO_WATCHDOG_IMPLEMENTATION
        display       "Hardware watchdog"
        calculated    1
        implements    CYGINT_WATCHDOG_IMPLEMENTATIONS
    }
    
    cdl_option CYGNUM_DEVS_WATCHDOG_ARM_AT91WDTC_DESIRED_TIMEOUT_MS {
      	display       	"Desired timeout value"
	flavor        	data
	default_value 	1000
	description "
	    This parameter controls the watchdog timeout interval.
	    Note that you may not get the exact value requested
	    here, the timeout interval may have to be adjusted
	    because of hardware limitations. The actual timeout
	    used will be the smallest possible value that is not
	    less than this parameter. Since the timeout is derived
            from the LC based slow clock don't expect great accuracy. 
            On my board a 1000ms timeout actually goes off after 550ms!"
    }

    cdl_option CYGNUM_DEVS_WATCHDOG_ARM_AT91WDTC_TIMEOUT_VALUE {
        display        "Calculated timeout value"
        flavor         data
        calculated     { (CYGNUM_HAL_ARM_AT91_SLOW_CLOCK / 128) *
                          (CYGNUM_DEVS_WATCHDOG_ARM_AT91WDTC_DESIRED_TIMEOUT_MS / 1000)
                       }
        legal_values   { 0 to 4096 }            
        description    "
            This is the calculated value that will be placed into
            watchdog counter timer."
    }

    cdl_option CYGSEM_DEVS_WATCHDOG_ARM_AT91WDTC_RESET {
      	display       "Generate reset on watchdog expiration"
	flavor	      bool
	default_value 1
      	implements    CYGINT_WATCHDOG_RESETS_ON_TIMEOUT
	description   "
	  Enabling this option changes the watchdog operation mode
	  to generate a system reset upon expiration instead of
	  invoking an application-defined action."
    }

    cdl_component CYGPKG_DEVICES_WATCHDOG_ARM_AT91WDTC_OPTIONS {
        display       "AT91 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_ARM_AT91WDTC_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_ARM_AT91WDTC_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."
        }
    }
}

# EOF watchdog_at91WDTC.cdl