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#      watchdog_at91wdtc.cdl

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#      eCos watchdog for ARM AT91 WDTC driver configuration data

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# ====================================================================

######DESCRIPTIONBEGIN####

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# Author(s):      tkoeller

# Contributors:   tkoeller, nickg, asl

# Date:           2006-02-18

#

#####DESCRIPTIONEND####

#

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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"

        default_value 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