watchdog.cdl

eCos操作系统源码

# ====================================================================
#
#      watchdog.cdl
#
#      eCos watchdog configuration data
#
# ====================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
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## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      jskov
# Original data:  nickg
# Contributors:
# Date:           1999-07-13
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_IO_WATCHDOG {
    display       "Watchdog IO device"
    define_header watchdog.h
    include_dir   cyg/io
    requires      1 == CYGINT_WATCHDOG_IMPLEMENTATIONS
    description   "
	The watchdog IO device allows applications to make use of a
	timer facility. Depending on the underlying hardware device
        driver, a watchdog timeout will either cause a board reset
        or an action routine to be called. The application must call
        the watchdog reset function at regular intervals, or else the
	device will timeout. The assumption is that the watchdog timer
        should never trigger unless there has been a serious fault in
	either the hardware or the software."

    compile       watchdog.cxx

    cdl_interface CYGINT_WATCHDOG_HW_IMPLEMENTATIONS {
        display       "Number of watchdog hardware implementations"
        no_define
    }

    cdl_interface CYGINT_WATCHDOG_IMPLEMENTATIONS {
        display       "Number of watchdog implementations"
        no_define
    }

    cdl_component CYGPKG_IO_WATCHDOG_IMPLEMENTATION {
        display "Watchdog implementation"
        flavor none
        no_define
        description "Implementations of the watchdog device."

        cdl_option CYGPKG_WATCHDOG_EMULATE {
            default_value { 0 == CYGINT_WATCHDOG_HW_IMPLEMENTATIONS }
            display       "Watchdog emulator"
            implements    CYGINT_WATCHDOG_IMPLEMENTATIONS
            requires      CYGVAR_KERNEL_COUNTERS_CLOCK
            compile       emulate.cxx
            description   "
                When this option is enabled, a watchdog device will be
                emulated using the kernel real-time clock."
        }

        cdl_option CYGIMP_WATCHDOG_NONE {
            display       "No watchdog"
            default_value 0
            implements    CYGINT_WATCHDOG_IMPLEMENTATIONS
            description   "Disables the watchdog."
        }
    }

    cdl_interface CYGINT_WATCHDOG_RESETS_ON_TIMEOUT {
        display       "Set if device causes a reset on timeout"
        no_define
    }

    cdl_option CYGSEM_WATCHDOG_RESETS_ON_TIMEOUT {
        display       "Set if device causes a reset on timeout"
        calculated    { CYGINT_WATCHDOG_RESETS_ON_TIMEOUT == 1 }
        description   "
            Some watchdog devices reset the board on timeout - for these
            implementations it does not make sense to register timeout
            actions so the code gets disabled when this option is set.
            When this option is not set, it is the application's
            responsibility to register an action handler which can force
            a board reset when it gets called."
    }

    cdl_option CYGPKG_IO_WATCHDOG_BUILD_INTERACTIVE_TEST {
	display "Build interactive watchdog test"
	flavor  bool
	no_define
	default_value 0
	description   "
            This option enables the building of a watchdog test
            which can be used to test that the board resets on
            watchdog timeout. This test is built separately since
            it only makes sense to use interactively."
    }

    cdl_component CYGPKG_IO_WATCHDOG_OPTIONS {
        display "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_IO_WATCHDOG_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 IO device. These flags are used
                in addition to the set of global flags."
        }

        cdl_option CYGPKG_IO_WATCHDOG_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 IO device. These flags are removed from
                the set of global flags if present."
        }

        cdl_option CYGPKG_IO_WATCHDOG_TESTS {
            display "Watchdog tests"
            flavor  data
            no_define
            calculated { CYGPKG_IO_WATCHDOG_BUILD_INTERACTIVE_TEST ? 
                         CYGSEM_WATCHDOG_RESETS_ON_TIMEOUT ? "tests/watchdog2 tests/watchdog_reset" : "tests/watchdog tests/watchdog2 tests/watchdog_reset" :
                         CYGSEM_WATCHDOG_RESETS_ON_TIMEOUT ? "tests/watchdog2" : "tests/watchdog tests/watchdog2" }

            description   "
                This option specifies the set of tests for the
                watchdog IO device."
        }
    }
}