u-boot/net/rarp.c
wdenk 7a8e9bed17 * Patch by Marc Singer, 29 May 2003:
Fixed rarp boot method for IA32 and other little-endian CPUs.

* Patch by Marc Singer, 28 May 2003:
  Added port I/O commands.

* Patch by Matthew McClintock, 28 May 2003
  - cpu/mpc824x/start.S: fix relocation code when booting from RAM
  - minor patches for utx8245

* Patch by Daniel Engström, 28 May 2003:
  x86 update

* Patch by Dave Ellis, 9 May 2003 + 27 May 2003:
  add nand flash support to SXNI855T configuration
  fix/extend nand flash support:
  - fix 'nand erase' command so does not erase bad blocks
  - fix 'nand write' command so does not write to bad blocks
  - fix nand_probe() so handles no flash detected properly
  - add doc/README.nand
  - add .jffs2 and .oob options to nand read/write
  - add 'nand bad' command to list bad blocks
  - add 'clean' option to 'nand erase' to write JFFS2 clean markers
  - make NAND read/write faster

* Patch by Rune Torgersen, 23 May 2003:
  Update for MPC8266ADS board
2003-05-31 18:35:21 +00:00

106 lines
2.5 KiB
C

/*
* (C) Copyright 2000-2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
#include <net.h>
#include "bootp.h"
#include "rarp.h"
#include "tftp.h"
#if (CONFIG_COMMANDS & CFG_CMD_NET)
#define TIMEOUT 5 /* Seconds before trying BOOTP again */
#ifndef CONFIG_NET_RETRY_COUNT
# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
#else
# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
#endif
int RarpTry;
/*
* Handle a RARP received packet.
*/
static void
RarpHandler(uchar * dummi0, unsigned dummi1, unsigned dummi2, unsigned dummi3)
{
#ifdef DEBUG
printf("Got good RARP\n");
#endif
TftpStart ();
}
/*
* Timeout on BOOTP request.
*/
static void
RarpTimeout(void)
{
if (RarpTry >= TIMEOUT_COUNT) {
puts ("\nRetry count exceeded; starting again\n");
NetStartAgain ();
} else {
NetSetTimeout (TIMEOUT * CFG_HZ, RarpTimeout);
RarpRequest ();
}
}
void
RarpRequest (void)
{
int i;
volatile uchar *pkt;
ARP_t * rarp;
printf("RARP broadcast %d\n", ++RarpTry);
pkt = NetTxPacket;
NetSetEther(pkt, NetBcastAddr, PROT_RARP);
pkt += ETHER_HDR_SIZE;
rarp = (ARP_t *)pkt;
rarp->ar_hrd = htons (ARP_ETHER);
rarp->ar_pro = htons (PROT_IP);
rarp->ar_hln = 6;
rarp->ar_pln = 4;
rarp->ar_op = htons (RARPOP_REQUEST);
memcpy (&rarp->ar_data[0], NetOurEther, 6); /* source ET addr */
memcpy (&rarp->ar_data[6], &NetOurIP, 4); /* source IP addr */
memcpy (&rarp->ar_data[10], NetOurEther, 6); /* dest ET addr = source ET addr ??*/
/* dest. IP addr set to broadcast */
for (i = 0; i <= 3; i++) {
rarp->ar_data[16 + i] = 0xff;
}
NetSendPacket(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE);
NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);
NetSetHandler(RarpHandler);
}
#endif /* CFG_CMD_NET */