Subversion Repositories openrisc

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

#

#      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

##

## 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):      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

            calculated    1000000000

        }

        cdl_option CYGNUM_HAL_RTC_DENOMINATOR {

            display       "Real-time clock denominator"

            flavor        data

            calculated    100

        }

        cdl_option CYGNUM_HAL_RTC_PERIOD {

            display       "Real-time clock period"

            flavor        data

           calculated     11932

        }

    }

    cdl_component CYGPKG_HAL_I386_PCMB_MEMSIZE {

        display       "How to discover the size of available RAM."

        flavor        data

        legal_values  {"BIOS" "HARDCODE"}

        default_value {"BIOS"}

        description   "It is possible for the HAL to discover the

                       size of RAM In several ways. Currently this

                        can be done by querying the BIOS or by

                        hardcoding the values into the executable."

        cdl_option CYGNUM_HAL_I386_PCMB_MEMSIZE_BASE {

            display       "Amount of Base RAM available."

            flavor        data

            default_value 0x000F0000

            active_if     { CYGPKG_HAL_I386_PCMB_MEMSIZE == "HARDCODE" }

        }

        cdl_option CYGNUM_HAL_I386_PCMB_MEMSIZE_EXTENDED {

            display       "Amount of Extended RAM available."

            flavor        data

            default_value 0x00100000

            active_if     { CYGPKG_HAL_I386_PCMB_MEMSIZE == "HARDCODE" }

        }

    }

    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 ""

        }

    }

    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."

    }

}