blob: 77d63e871bd43c01af4a7468dc60337b1e8f7f54 [file] [log] [blame]
wdenkaffae2b2002-08-17 09:36:01 +00001/*
2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <command.h>
26#include <net.h>
wdenkc40b2952004-03-13 23:29:43 +000027#include "nfs.h"
wdenkaffae2b2002-08-17 09:36:01 +000028#include "bootp.h"
29#include "rarp.h"
30#include "tftp.h"
31
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +020032#define TIMEOUT 5000UL /* Milliseconds before trying BOOTP again */
wdenkaffae2b2002-08-17 09:36:01 +000033#ifndef CONFIG_NET_RETRY_COUNT
34# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
35#else
36# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
37#endif
38
39
40int RarpTry;
41
42/*
43 * Handle a RARP received packet.
44 */
45static void
Luca Ceresoli03eb1292011-04-18 06:19:50 +000046RarpHandler(uchar *dummi0, unsigned dummi1, IPaddr_t sip, unsigned dummi2,
47 unsigned dummi3)
wdenkaffae2b2002-08-17 09:36:01 +000048{
Robin Getz0ebf04c2009-07-23 03:01:03 -040049 debug("Got good RARP\n");
Simon Glasse4a3d572011-10-27 06:24:32 +000050 net_auto_load();
wdenkaffae2b2002-08-17 09:36:01 +000051}
52
53
54/*
55 * Timeout on BOOTP request.
56 */
57static void
58RarpTimeout(void)
59{
60 if (RarpTry >= TIMEOUT_COUNT) {
61 puts ("\nRetry count exceeded; starting again\n");
62 NetStartAgain ();
63 } else {
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +020064 NetSetTimeout (TIMEOUT, RarpTimeout);
wdenkaffae2b2002-08-17 09:36:01 +000065 RarpRequest ();
66 }
67}
68
69
70void
71RarpRequest (void)
72{
73 int i;
Joe Hershbergerdb288a92012-05-15 08:59:04 +000074 uchar *pkt;
wdenkaffae2b2002-08-17 09:36:01 +000075 ARP_t * rarp;
76
77 printf("RARP broadcast %d\n", ++RarpTry);
78 pkt = NetTxPacket;
79
wdenka3d991b2004-04-15 21:48:45 +000080 pkt += NetSetEther(pkt, NetBcastAddr, PROT_RARP);
wdenkaffae2b2002-08-17 09:36:01 +000081
82 rarp = (ARP_t *)pkt;
83
wdenk7a8e9bed2003-05-31 18:35:21 +000084 rarp->ar_hrd = htons (ARP_ETHER);
85 rarp->ar_pro = htons (PROT_IP);
wdenkaffae2b2002-08-17 09:36:01 +000086 rarp->ar_hln = 6;
87 rarp->ar_pln = 4;
wdenk7a8e9bed2003-05-31 18:35:21 +000088 rarp->ar_op = htons (RARPOP_REQUEST);
wdenkaffae2b2002-08-17 09:36:01 +000089 memcpy (&rarp->ar_data[0], NetOurEther, 6); /* source ET addr */
90 memcpy (&rarp->ar_data[6], &NetOurIP, 4); /* source IP addr */
91 memcpy (&rarp->ar_data[10], NetOurEther, 6); /* dest ET addr = source ET addr ??*/
92 /* dest. IP addr set to broadcast */
93 for (i = 0; i <= 3; i++) {
94 rarp->ar_data[16 + i] = 0xff;
95 }
96
wdenka3d991b2004-04-15 21:48:45 +000097 NetSendPacket(NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
wdenkaffae2b2002-08-17 09:36:01 +000098
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +020099 NetSetTimeout(TIMEOUT, RarpTimeout);
wdenkaffae2b2002-08-17 09:36:01 +0000100 NetSetHandler(RarpHandler);
101}