ether.h~

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.h
 *
 * This is an ethernet driver interface. The implemention of this interface
 * will interact with the particular ethernet h/w chipset; the "link" layer
 * of the ISO-7 layer networking stack. Clients use this interface to gain
 * access to the h/w dependent ethernet chipset.
 *
 * See Also
 *   smc91xxx.c     -- A particular implementation exposing the ether.h interface.
 *   ether_cs8900.c -- A particular implementation exposing the ether.h interface.
 *
 * Copyright (C) 2002 RidgeRun, Inc.
 * Author: RidgeRun, Inc  <[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.
 *
 * Please report all bugs/problems to the author or <[e-mail]>
 *
 * key: RRGPLCR (do not remove)
 *
 */

#ifndef ETHER_H
#define ETHER_H

typedef enum {
  SEND_AND_GET_REPLY,
  SEND,
  RECV,
  FLUSH
} submit_mode;

//#ifdef BSPCONF_BTLDR_CS8900_DEBUG
extern unsigned short readreg(unsigned short reg_offset);  //may be cs8900 only
//#endif

extern void ether_submit(submit_mode mode,            // in
                         char *device_MAC,            // in, Can be NULL only if chipset has built in MAC
                         char *server_MAC,            // in
                         void *datagram,              // in/out
                         unsigned short *num_bytes);  // in/out

  // --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.

extern void ether_init(void);

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

#endif