/*
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/*
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* (C) Copyright 2000
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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*
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* See file CREDITS for list of people who contributed to this
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* See file CREDITS for list of people who contributed to this
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* project.
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* project.
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*
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*
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* This program is free software; you can redistribute it and/or
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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* the License, or (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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* MA 02111-1307 USA
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*/
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*/
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#include "common.h"
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#include "common.h"
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#include "net.h"
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#include "net.h"
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#include "bootp.h"
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#include "bootp.h"
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#include "rarp.h"
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#include "rarp.h"
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#include "tftp.h"
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#include "tftp.h"
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#if (CONFIG_COMMANDS & CFG_CMD_NET)
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#if (CONFIG_COMMANDS & CFG_CMD_NET)
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#define TIMEOUT 5 /* Seconds before trying BOOTP again */
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#define TIMEOUT 5 /* Seconds before trying BOOTP again */
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#define TIMEOUT_COUNT 1 /* # of timeouts before giving up */
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#define TIMEOUT_COUNT 1 /* # of timeouts before giving up */
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int RarpTry;
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int RarpTry;
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/*
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/*
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* Handle a RARP received packet.
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* Handle a RARP received packet.
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*/
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*/
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static void
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static void
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RarpHandler(uchar * dummi0, unsigned dummi1, unsigned dummi2, unsigned dummi3)
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RarpHandler(uchar * dummi0, unsigned dummi1, unsigned dummi2, unsigned dummi3)
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{
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{
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#ifdef DEBUG
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#ifdef DEBUG
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printf("Got good RARP\n");
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printf("Got good RARP\n");
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#endif
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#endif
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TftpStart ();
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TftpStart();
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}
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}
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/*
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/*
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* Timeout on BOOTP request.
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* Timeout on BOOTP request.
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*/
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*/
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static void
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static void RarpTimeout(void)
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RarpTimeout(void)
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{
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{
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if (RarpTry >= TIMEOUT_COUNT) {
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if (RarpTry >= TIMEOUT_COUNT) {
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puts ("\nRetry count exceeded; starting again\n");
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puts("\nRetry count exceeded; starting again\n");
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NetStartAgain ();
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NetStartAgain();
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} else {
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} else {
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NetSetTimeout (TIMEOUT * CFG_HZ, RarpTimeout);
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NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);
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RarpRequest ();
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RarpRequest();
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}
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}
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}
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}
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void RarpRequest(void)
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void
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RarpRequest (void)
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{
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{
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int i;
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int i;
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volatile uchar *pkt;
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volatile uchar *pkt;
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ARP_t * rarp;
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ARP_t *rarp;
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printf("RARP broadcast %d\n", ++RarpTry);
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printf("RARP broadcast %d\n", ++RarpTry);
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pkt = NetTxPacket;
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pkt = NetTxPacket;
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NetSetEther(pkt, NetBcastAddr, PROT_RARP);
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NetSetEther(pkt, NetBcastAddr, PROT_RARP);
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pkt += ETHER_HDR_SIZE;
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pkt += ETHER_HDR_SIZE;
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rarp = (ARP_t *)pkt;
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rarp = (ARP_t *) pkt;
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rarp->ar_hrd = ARP_ETHER;
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rarp->ar_hrd = ARP_ETHER;
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rarp->ar_pro = PROT_IP;
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rarp->ar_pro = PROT_IP;
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rarp->ar_hln = 6;
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rarp->ar_hln = 6;
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rarp->ar_pln = 4;
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rarp->ar_pln = 4;
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rarp->ar_op = RARPOP_REQUEST;
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rarp->ar_op = RARPOP_REQUEST;
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NetCopyEther(&rarp->ar_data[0], NetOurEther); /* source ET addr */
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NetCopyEther(&rarp->ar_data[0], NetOurEther); /* source ET addr */
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*(IPaddr_t *)(&rarp->ar_data[6]) = NetOurIP; /* source IP addr */
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*(IPaddr_t *) (&rarp->ar_data[6]) = NetOurIP; /* source IP addr */
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NetCopyEther(&rarp->ar_data[10], NetOurEther); /* dest ET addr = source ET addr ??*/
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NetCopyEther(&rarp->ar_data[10], NetOurEther); /* dest ET addr = source ET addr ?? */
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/* dest. IP addr set to broadcast */
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/* dest. IP addr set to broadcast */
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for (i = 0; i <= 3; i++) {
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for (i = 0; i <= 3; i++) {
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rarp->ar_data[16 + i] = 0xff;
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rarp->ar_data[16 + i] = 0xff;
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}
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}
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NetSendPacket(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE);
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NetSendPacket(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE);
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NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);
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NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);
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NetSetHandler(RarpHandler);
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NetSetHandler(RarpHandler);
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}
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}
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#endif /* CFG_CMD_NET */
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#endif /* CFG_CMD_NET */
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