[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/boot/common/src/uboot/net/rarp.c b/boot/common/src/uboot/net/rarp.c
new file mode 100644
index 0000000..49185b4
--- /dev/null
+++ b/boot/common/src/uboot/net/rarp.c
@@ -0,0 +1,116 @@
+/*
+ * (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 "nfs.h"
+#include "bootp.h"
+#include "rarp.h"
+#include "tftp.h"
+
+#define TIMEOUT 5000UL /* Milliseconds 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.
+ */
+void rarp_receive(struct ip_udp_hdr *ip, unsigned len)
+{
+ struct arp_hdr *arp;
+
+ debug_cond(DEBUG_NET_PKT, "Got RARP\n");
+ arp = (struct arp_hdr *)ip;
+ if (len < ARP_HDR_SIZE) {
+ printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
+ return;
+ }
+
+ if ((ntohs(arp->ar_op) != RARPOP_REPLY) ||
+ (ntohs(arp->ar_hrd) != ARP_ETHER) ||
+ (ntohs(arp->ar_pro) != PROT_IP) ||
+ (arp->ar_hln != 6) || (arp->ar_pln != 4)) {
+
+ puts("invalid RARP header\n");
+ } else {
+ NetCopyIP(&NetOurIP, &arp->ar_data[16]);
+ if (NetServerIP == 0)
+ NetCopyIP(&NetServerIP, &arp->ar_data[6]);
+ memcpy(NetServerEther, &arp->ar_data[0], 6);
+ debug_cond(DEBUG_DEV_PKT, "Got good RARP\n");
+ net_auto_load();
+ }
+}
+
+
+/*
+ * Timeout on BOOTP request.
+ */
+static void RarpTimeout(void)
+{
+ if (RarpTry >= TIMEOUT_COUNT) {
+ puts("\nRetry count exceeded; starting again\n");
+ NetStartAgain();
+ } else {
+ NetSetTimeout(TIMEOUT, RarpTimeout);
+ RarpRequest();
+ }
+}
+
+
+void RarpRequest(void)
+{
+ uchar *pkt;
+ struct arp_hdr *rarp;
+ int eth_hdr_size;
+
+ printf("RARP broadcast %d\n", ++RarpTry);
+ pkt = NetTxPacket;
+
+ eth_hdr_size = NetSetEther(pkt, NetBcastAddr, PROT_RARP);
+ pkt += eth_hdr_size;
+
+ rarp = (struct arp_hdr *)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 */
+ /* dest ET addr = source ET addr ??*/
+ memcpy(&rarp->ar_data[10], NetOurEther, 6);
+ /* dest IP addr set to broadcast */
+ memset(&rarp->ar_data[16], 0xff, 4);
+
+ NetSendPacket(NetTxPacket, eth_hdr_size + ARP_HDR_SIZE);
+
+ NetSetTimeout(TIMEOUT, RarpTimeout);
+}