ether_smc91c111.c

针对德州仪器DM270开发板的bootloader,其实现了内核的下载以及文件系统的下载

/**************************************************************************
 * File: ether_smc91c111.c
 *
 * This is an implementation of a ether.h interface. This implementation
 * supplies an ethernet driver particular to the SMC91c111 ethernet
 * chip set. This h/w dependent implemenation exposes the h/w independent
 * ether.h interface.
 *
 * Implemented with assitance from the SMC LAN91C111 h/w data sheet.
 *
 * See Also
 *   ether.h
 *
 * Copyright (C) 2003 Cadenux, LLC (http://www.cadenux.com)
 * Author: Gregory Nutt ([e-mail])
 *
 * This program 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 of the  License, or (at your
 * option) any later version.
 *
 * THIS  SOFTWARE  IS  PROVIDED  ``AS  IS''  AND   ANY  EXPRESS  OR IMPLIED
 * WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 * NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT,  INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 * USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * You should have received a copy of the  GNU General Public License along
 * with this program; if not, write  to the Free Software Foundation, Inc.,
 * 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 **************************************************************************/

/**************************************************************************
 * Included Files
 **************************************************************************/

#include "types.h"
#include "util.h"
#include "ether.h"
#include "net.h"
#include "io.h"
#include "memconfig.h"

/**************************************************************************
 * Global Functions
 **************************************************************************/

#ifdef BSPCONF_BTLDR_SMC91C111_DEBUG
nsigned short readreg(unsigned short reg_offset);
#endif

/* ether_submit()
 *
 * Used by clients to send/receive datagrams to/from the ethernet
 * port. The underlying implementation will construct and prepend
 * the necessary ethernet frame header onto the front of the
 * client supplied datagram. For this reason it is important that
 * the client arrange that the bytes directly proceeding the
 * the *datagram buffer be allocated and available for the ether
 * submit function. sizeof(ether_hdr_t) bytes.
 */

void ether_submit(submit_mode mode,           // in
		  char *device_MAC,           // in
		  char *server_MAC,           // in
		  void *datagram,             // in/out
		  unsigned short *num_bytes)  // in/out
{
}


/* ether_init()
 *
 * Called once at bootloader init to initialize the module and make
 * it ready for client use.
 */

void ether_init(void)
{
}