power.cdl

eCos操作系统源码

# ====================================================================
#
#      power.cdl
#
#      Generic power management support
#
# ====================================================================
#####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):      bartv
# Original data:  bartv
# Contributors:
# Date:           2001-06-12
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_POWER {
    display     "Generic power management support"
    doc         ref/services-power.html
    parent      CYGPKG_IO
    include_dir "cyg/power"
    compile     power.cxx
    compile     -library=libextras.a power_data.cxx
    
    cdl_option CYGIMP_POWER_PROVIDE_STRINGS {
	display        "Provide a string for every power controller"
	doc            ref/power-info.html#POWER-MANAGEMENT-INFO_IDS
	default_value  1
	description "
            Optionally each power controller can contain a string identifying
            the hardware or functionality it is associated with. This string
            is not required by the generic power management, but may be
            useful when presenting the current state of each controller to
            the user.
        "
    }

    cdl_option CYGIMP_POWER_PROVIDE_POLICY_DATA {
	display        "Reserve space in each power controller for use by the policy manager"
	doc            ref/power-policy.html#POWER-POLICY-DATA
	default_value  1
	description "
	    Optionally each power controller can provide a word of data
	    for use by the policy manager, for example to store a pointer
	    to some data structure controlled by the policy manager. If
	    the policy manager has no need for such additional data this
	    option can be safely disabled, saving a small amount of memory.
	"
    }
    
    cdl_component CYGPKG_POWER_THREAD {
	display        "Run a separate thread within the power management package"
	doc            ref/power-intro.html#POWER-INTRO-OPERATION
	active_if      CYGPKG_KERNEL
	default_value  1
	description "
            Optionally the power management code can run in its own thread. This
            can be useful if state changes can be requested from any code,
            including DSRs. If on the other hand the power management policy code
            runs in its own thread and is the only part of the system that
            makes power management calls, a separate thread is redundant.
        "

	cdl_option CYGNUM_POWER_THREAD_STACKSIZE {
	    display             "Stack size for the power management thread"
	    default_value       { is_loaded(CYGNUM_LIBC_MAIN_DEFAULT_STACK_SIZE) ? CYGNUM_LIBC_MAIN_DEFAULT_STACK_SIZE :
                                  (2 * CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE) }
	    flavor              data
	    description "
                If a separate power management thread is being used then this
                option allows the stack size to be controlled. If any power
                controllers require an unusually large amount of stack then
                they may impose a lower bound on this value, or alternatively
                the user may need to increase the stack.
            "
	}

	cdl_option CYGNUM_POWER_THREAD_PRIORITY {
	    display       "Thread priority to use"
	    active_if     { CYGNUM_KERNEL_SCHED_PRIORITIES > 2 }
	    default_value 1
	    flavor        data
	    description "
                This is the priority for the power management thread.
                Typically it defaults to a high priority, thus ensuring
                that when the system wakes up from a sleep state all of
                the power controllers are activated early on and by the
                time other threads run they do not have to worry about
                various devices still being asleep.
            "
	}
    }

    cdl_component CYGPKG_POWER_OPTIONS {
        display "Power management 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_POWER_CFLAGS_ADD {
            display "Additional compiler flags"
            flavor  data
            no_define
            default_value { "" }
            description   "
                This option modifies the set of compiler flags for
                building the power management package. These flags are
                used in addition to the set of global flags."
        }

        cdl_option CYGPKG_POWER_CFLAGS_REMOVE {
            display "Suppressed compiler flags"
            flavor  data
            no_define
            default_value { "" }
            description   "
                This option modifies the set of compiler flags for
                building the power management package. These flags are
	        removed from the set of global flags if present."
        }

        cdl_option CYGPKG_POWER_TESTS {
            display "Power management tests"
            flavor  data
            no_define
            calculated { "tests/powertest" }
	}
    }
}