hal_i386_pcmb.cdl

开放源码实时操作系统源码.

# ====================================================================
#
#      hal_i386_pcmb.cdl
#
#      PC Motherboard HAL package 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) 2002 Gary Thomas
##
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## for more details.
##
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## 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
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## License. However the source code for this file must still be made available
## in accordance with section (3) of the GNU General Public License.
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## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      jskov
# Original data:  jskov
# Contributors:   nickg, gthomas
# Date:           1999-11-01
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_HAL_I386_PCMB {
    display  "i386 PC Motherboard Support"
    parent        CYGPKG_HAL_I386
    define_header hal_i386_pcmb.h
    include_dir   cyg/hal
    description   "
    The i386 PC Motherboard HAL package provides the
    support needed to run eCos binaries on an i386 PC
    using a standard motherboard. This package provides
    support for the standard PC devices: timers, interrupt
    controller, serial ports, ASCII display, keyboard, PCI
    bus etc. that are found on all PC compatible platforms.
    It does not provide support for devices that may also be
    found on modern motherboards, such as ethernet, sound and
    video devices. These are supported by drivers elsewhere."

    compile      pcmb_misc.c pcmb_serial.c 

    implements   CYGINT_HAL_I386_MEM_REAL_REGION_TOP
    implements   CYGINT_HAL_PLF_IF_IDE
    
    # Real-time clock/counter specifics
    cdl_component CYGNUM_HAL_RTC_CONSTANTS {
        display       "Real-time clock constants."
        description   "The RTC period is based on the clock input
	               to the 8254, which is 1193180 Hz.
	               CYGNUM_HAL_RTC_PERIOD is set for 100 ticks
	               per second."
        flavor        none
    
        cdl_option CYGNUM_HAL_RTC_NUMERATOR {
            display       "Real-time clock numerator"
            flavor        data
            default_value 1000000000
        }
        cdl_option CYGNUM_HAL_RTC_DENOMINATOR {
            display       "Real-time clock denominator"
            flavor        data
            default_value 100
        }
        cdl_option CYGNUM_HAL_RTC_PERIOD {
            display       "Real-time clock period"
            flavor        data
           default_value  11932
        }
    }

    cdl_option CYGSEM_HAL_I386_PC_LARGE_PCI_SPACE {
	display           "Search entire PCI space"
	flavor            bool
	default_value     0
        description       "
          This option enables searching the entire PCI address space, including
        up to 256 busses, etc.  Probably only useful when there are bridges or
        other PCI expanding devices (such as a board with it's own PCI bus)
        in the system.  If disabled, the system will revert to the default
        PCI space size (typically 8 busses)."
    }

    cdl_option CYGNUM_HAL_I386_PC_STARTUP_VIDEO_MODE {
	display           "Switch the display to an alternative video mode"
	flavor            booldata
	default_value     0
	requires          { !CYGSEM_HAL_I386_PC_DIAG_SCREEN }
	active_if         CYGPKG_REDBOOT
	description "
	    This option can be used when building RedBoot to switch
	    the display to a suitable mode, typically before running
	    an eCos graphical application. The mode switch involves
            calling the PC Video BIOS, so needs to happen while the
	    processor is still running in real mode. Some information
	    about the video BIOS, the current mode, and the available
	    modes will be written to video memory so that the eCos
	    application knows what happened.

	    Different graphics cards use different numbers for the
	    various modes, so there is no simple way of knowing which
	    mode should be specified to achieve the desired resolution.
	    Instead RedBoot can be built with a suitable default, for
	    example 0x0100, and then a simple eCos application can be
	    built using an appropriate eCos configuration and
	    run to find out about all the available mode. RedBoot can
	    then be reconfigured and rebuilt to use a suitable mode.
	    The PC motherboard support package comes with a simple
	    eCos program gfxmode.c which can be used for this."
    }
    
    cdl_component CYGPKG_HAL_I386_PCMB_SMP_SUPPORT {
	active_if { CYGPKG_HAL_SMP_SUPPORT }
	calculated { CYGPKG_HAL_SMP_SUPPORT }
	compile pcmb_smp.c

	define_proc {
	    puts $::cdl_header "#undef HAL_PLATFORM_EXTRA"
	    puts $::cdl_header "#define HAL_PLATFORM_EXTRA  \"\[SMP\]\""
	    puts $::cdl_header ""
	}
    }

    # Profiling support. This is not really a user-settable option,
    # just a way of associating a constraint with a description. The
    # profiling timer involves munging the system timer so profiling
    # is only possible in suitable kernel configurations.
    cdl_option CYGFUN_HAL_I386_PCMB_GPROF_SUPPORT {
	display		"Support for gprof profiling"
	active_if	CYGPKG_PROFILE_GPROF
	calculated	1
	implements	CYGINT_PROFILE_HAL_TIMER
	requires	CYGVAR_KERNEL_COUNTERS_CLOCK
	description "
            The PC HAL support can provide a profiling timer for use
          by the gprof package. However the hardware only provides a
          single source of timer interrupts so this must be shared
          between the system clock and the profiling code. The current
          implementation requires that the system clock be initialized
          first (which happens in a static constructor with priority
          CYG_INIT_CLOCK), then profiling can be enabled via a call
          to profile_on()."
    }
    
    cdl_interface CYGINT_HAL_I386_PCMB_SCREEN_SUPPORT {
	display       "Enable PC screen support"
	compile       pcmb_screen.c
	description   "This option enables support for the PC screen and
	               keyboard. These are combined into a virtual serial
	               device that may be used for diagnostic output.
	               Note that there is little point in trying to use it
	               as a debug channel."
    }
}