devs_disk_mmc.cdl

来自「开放源码实时操作系统源码.」· CDL 代码 · 共 114 行

# ====================================================================
#
#      devs_disk_mmc.cdl
#
#      Support for MMC cards
#
# ====================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
## This file is part of eCos, the Embedded Configurable Operating System.
## Copyright (C) 2004, 2005, 2006 eCosCentric Limited
##
## 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.
## -------------------------------------------
#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      bartv,jlarmour
# Date:           2004-04-25
#
#####DESCRIPTIONEND####
# ====================================================================

cdl_package CYGPKG_DEVS_DISK_MMC {
    display     "Disk driver for MMC cards"
    doc         ecos-ref/devs-disk-mmc-part.html

    include_dir cyg/io
    
    parent      CYGPKG_IO_DISK_DEVICES
    active_if   CYGPKG_IO_DISK

    cdl_interface CYGINT_DEVS_DISK_MMC_SPI_CONNECTORS {
	active_if	CYGPKG_IO_SPI
	display		"Number of MMC connectors accessed via SPI"
    }

    cdl_component CYGPKG_DEVS_DISK_MMC_SPI {
	display		"Access an MMC card via an SPI bus"
	default_value	{ CYGINT_DEVS_DISK_MMC_SPI_CONNECTORS > 0 }
	compile		-library=libextras.a mmc_spi.c
	requires	CYGPKG_ERROR CYGPKG_LIBC_STRING 
	description "
            This option enables support for accessing an MMC card via an
            SPI bus."
	
	define_proc {
	    puts $::cdl_system_header "/***** MMC/SPI disk driver output start *****/"
            puts $::cdl_system_header "#ifndef CYGDAT_DEVS_DISK_CFG"
	    puts $::cdl_system_header "#define CYGDAT_DEVS_DISK_CFG <pkgconf/devs_disk_mmc.h>"
            puts $::cdl_system_header "#endif"
	    puts $::cdl_system_header "/***** MMC/SPI disk driver output end *****/"
	}

	cdl_option CYGDAT_DEVS_DISK_MMC_SPI_DISK0_NAME {
	    display		"Device name for the MMC/SPI disk 0 device"
	    flavor		data
	    default_value	{ "\"/dev/hd0/\"" }
	    description "
                This is the device name used to access the raw disk device
                in eCos, for example for mount operations. Note that the
                trailing slash must be present."

	    # Testing support. For now just hard-code some values for partition 0
	    # on the card.
	    define_proc {
		puts $::cdl_header "#define CYGDAT_DEVS_DISK_TEST_DEVICE CYGDAT_DEVS_DISK_MMC_SPI_DISK0_NAME \"1\""
		puts $::cdl_header "#define CYGDAT_DEVS_DISK_TEST_MOUNTPOINT \"/dosfs\""
		puts $::cdl_header "#define CYGDAT_DEVS_DISK_TEST_DIRECTORY  \"/test\""
	    }
	}
	
	cdl_option CYGIMP_DEVS_DISK_MMC_SPI_POLLED {
	    display		"Run the driver in polled mode rather than interrupt-driven"
	    default_value	!CYGPKG_KERNEL
	    description "
                By default the MMC disk driver will operate in interrupt-driven
                mode if the kernel is present, i.e. if the application is likely
                to be multi-threaded. Otherwise it will operate in polled mode."
	}
    cdl_option CYGPKG_DEVS_DISK_MMC_SPI_IDLE_RETRIES_WAIT {
        display          "Idle to operational retry wait"
        flavor           booldata
        default_value    10000
        description      "
            This option sets how long to wait between retries of attempts to change the
            card state from idle to operational. It is measured in microseconds."
    }
}

# EOF devs_disk_mmc.cdl