/*
* Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
*/
static void BootpCopyNetParams(Bootp_t *bp){
IPaddr_t tmp_ip;
NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
NetCopyIP(&tmp_ip, &bp->bp_siaddr);
if(tmp_ip != 0){
NetCopyIP(&NetServerIP, &bp->bp_siaddr);
}
memcpy(NetServerEther, ((Ethernet_t *)NetRxPkt)->et_src, 6);
if(strlen(bp->bp_file) > 0){
copy_filename(BootFile, bp->bp_file, sizeof(BootFile));
}
#ifdef DEBUG
printf("Bootfile: %s\n", BootFile);
#endif
/*
* Propagate to environment:
* don't delete exising entry when BOOTP / DHCP reply does
* not contain a new value
*/
if(*BootFile){
setenv("bootfile", BootFile);
}
}
void ping_receive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
{
struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src;
IPaddr_t src_ip;
int eth_hdr_size;
switch (icmph->type) {
case ICMP_ECHO_REPLY:
src_ip = NetReadIP((void *)&ip->ip_src);
if (src_ip == NetPingIP)
net_set_state(NETLOOP_SUCCESS);
return;
case ICMP_ECHO_REQUEST:
eth_hdr_size = net_update_ether(et, et->et_src, PROT_IP);
debug_cond(DEBUG_DEV_PKT, "Got ICMP ECHO REQUEST, return "
"%d bytes\n", eth_hdr_size + len);
ip->ip_sum = 0;
ip->ip_off = 0;
NetCopyIP((void *)&ip->ip_dst, &ip->ip_src);
NetCopyIP((void *)&ip->ip_src, &NetOurIP);
ip->ip_sum = ~NetCksum((uchar *)ip,
IP_HDR_SIZE >> 1);
icmph->type = ICMP_ECHO_REPLY;
icmph->checksum = 0;
icmph->checksum = ~NetCksum((uchar *)icmph,
(len - IP_HDR_SIZE) >> 1);
NetSendPacket((uchar *)et, eth_hdr_size + len);
return;
/* default:
return;*/
}
}
/*------------------------------------------------------------------------
* This sends an TCP segment to the ip layer. The segment is
* is normally either a web page or a graphic.
* See "TCP/IP Illustrated, Volume 1" Sect 17.3
*------------------------------------------------------------------------
*/
void http_send(uchar *outbuf, uint len, uchar nr)
{
TCP_t *tcp;
IP_t *ip;
uint sum;
ushort result;
uint dest_ip;
/* Fill in TCP segment header */
tcp = (TCP_t *)(outbuf + 34);
ip = (IP_t *)(outbuf + 14);
tcp->source_port = htons(HTTP_PORT);
tcp->dest_port = htons(conxn[nr].port);
tcp->sequence = htonl(conxn[nr].my_sequence);
tcp->ack_number = htonl(conxn[nr].his_sequence);
/* Header is always 20 bytes long */
tcp->flags = htons(0x5000 | FLG_ACK | FLG_PSH);
tcp->window = htons(WINDOW_SIZE);
tcp->checksum = 0;
tcp->urgent_ptr = 0;
/*
* Compute checksum including 12 bytes of pseudoheader
* Must pre-fill 2 items in ip header to do this
*/
dest_ip = htonl(conxn[nr].ipaddr);
NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* in network byte order */
NetCopyIP((void*)&ip->ip_dst, &dest_ip);
/* Sum source_ipaddr, dest_ipaddr, and entire TCP message */
sum = (uint)cksum(outbuf + 26, 8 + len);
/*
* Add in the rest of pseudoheader which is
* protocol id and TCP segment length
*/
sum += (uint)htons(0x0006);
sum += (uint)htons(len);
/* In case there was a carry, add it back around */
result = (uint)(sum + (sum >> 16));
tcp->checksum = ~result;
memcpy(outbuf, conxn[nr].mac, 6);
if (http_debug == DEBUG)
printf("%s : Sending msg to IP layer\n", __func__);
NetSendIPPacket(outbuf, dest_ip, TCP_TYPE, len);
/* (Re)start TCP retransmit timer */
conxn[nr].timer = TCP_TIMEOUT;
}
/*
* Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
*/
static void BootpCopyNetParams(Bootp_t *bp)
{
IPaddr_t tmp_ip;
NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
#if !defined(CONFIG_BOOTP_SERVERIP)
NetCopyIP(&tmp_ip, &bp->bp_siaddr);
if (tmp_ip != 0)
NetCopyIP(&NetServerIP, &bp->bp_siaddr);
memcpy (NetServerEther, ((Ethernet_t *)NetRxPacket)->et_src, 6);
#endif
}
static void keymile_hdlc_enet_doarp(volatile void *packet, int len)
{
ARP_t *arp;
IPaddr_t src_ip; /* U-Boot's IP */
IPaddr_t dest_ip; /* the mgcoge's IP */
unsigned char *packet_copy = malloc(len);
/*
* Handling an ARP request means that a new transfer has started.
* Update our cached parameters now.
*/
initCachedNumbers(0); /* may reinit port numbers */
/* special handling required for ARP */
arp = (ARP_t *)(packet + ETHER_HDR_SIZE);
/*
* XXXX
* This is pretty dirty! NetReceive only uses
* a few fields when handling an ARP reply, so
* we only modify those here. This could
* result in catastrophic failure at a later
* time if the handler is modified!
*/
arp->ar_op = htons(ARPOP_REPLY);
/* save his/our IP */
src_ip = NetReadIP(&arp->ar_data[6]);
dest_ip = NetReadIP(&arp->ar_data[16]);
/* copy target IP to source IP */
NetCopyIP(&arp->ar_data[6], &dest_ip);
/* copy our IP to the right place */
NetCopyIP(&arp->ar_data[16], &src_ip);
/* always use 0x7f as the MAC for the coge */
arp->ar_data[0] = HDLC_UACUA;
/*
* copy the packet
* if NetReceive wants to write to stdout, it may overwrite packet
* especially if stdout is set to nc!
*
* However, if the malloc() above fails then we can still try the
* original packet, rather than causing the transfer to fail.
*/
if (packet_copy != NULL) {
memcpy(packet_copy, (char *)packet, len);
NetReceive(packet_copy, len);
free(packet_copy);
} else
NetReceive(packet, len);
}
/*
* Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
*/
static void BootpCopyNetParams(Bootp_t *bp)
{
IPaddr_t tmp_ip;
NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
#if !defined(CONFIG_BOOTP_SERVERIP)
NetCopyIP(&tmp_ip, &bp->bp_siaddr);
if (tmp_ip != 0)
NetCopyIP(&NetServerIP, &bp->bp_siaddr);
memcpy (NetServerEther, ((Ethernet_t *)NetRxPacket)->et_src, 6);
#endif
#ifdef PRODUCTION_CODE
/*
* Server overrides any target value to ensure the correct file is downloaded
*/
if (strlen(bp->bp_file) > 0)
copy_filename (BootFile, bp->bp_file, sizeof(BootFile));
debug("Bootfile: %s\n", BootFile);
/* Propagate to environment:
* don't delete exising entry when BOOTP / DHCP reply does
* not contain a new value
*/
if (*BootFile) {
setenv ("bootfile", BootFile);
}
#else
/*
* During development it is useful to be able to force the bootfile value from the
* target, rather than allowing the server to override it.
*/
if (strlen(bp->bp_file) > 0 && !getenv("bootfile"))
{
/* Propagate to environment:
* Only set when BOOTP / DHCP reply contains a new value
* and bootfile doesn't exist.
*/
copy_filename (BootFile, bp->bp_file, sizeof(BootFile));
setenv ("bootfile", BootFile);
}
debug ("Bootfile: %s\n", BootFile);
#endif
}
/*
* Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
*/
static void BootpCopyNetParams(struct Bootp_t *bp)
{
#if !defined(CONFIG_BOOTP_SERVERIP)
IPaddr_t tmp_ip;
NetCopyIP(&tmp_ip, &bp->bp_siaddr);
if (tmp_ip != 0)
NetCopyIP(&NetServerIP, &bp->bp_siaddr);
memcpy(NetServerEther, ((struct ethernet_hdr *)NetRxPacket)->et_src, 6);
if (strlen(bp->bp_file) > 0)
copy_filename(BootFile, bp->bp_file, sizeof(BootFile));
debug("Bootfile: %s\n", BootFile);
/* Propagate to environment:
* don't delete exising entry when BOOTP / DHCP reply does
* not contain a new value
*/
if (*BootFile)
setenv("bootfile", BootFile);
#endif
NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
}
static void BootpVendorFieldProcess(u8 * ext){
int size = *(ext + 1);
NetBootFileSize = 0;
switch(*ext){
/* Fixed length fields */
case 1: /* Subnet mask */
if (NetOurSubnetMask == 0){
NetCopyIP(&NetOurSubnetMask, (IPaddr_t *)(ext + 2));
}
break;
case 2: /* Time offset - Not yet supported */
break;
/* Variable length fields */
case 3: /* Gateways list */
if(NetOurGatewayIP == 0){
NetCopyIP(&NetOurGatewayIP, (IPaddr_t *)(ext + 2));
}
break;
case 4: /* Time server - Not yet supported */
break;
case 5: /* IEN-116 name server - Not yet supported */
break;
case 6:
if(NetOurDNSIP == 0){
NetCopyIP(&NetOurDNSIP, (IPaddr_t *)(ext + 2));
}
#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
if((NetOurDNS2IP == 0) && (size > 4)){
NetCopyIP(&NetOurDNS2IP, (IPaddr_t *)(ext + 2 + 4));
}
#endif
break;
case 7: /* Log server - Not yet supported */
break;
case 8: /* Cookie/Quote server - Not yet supported */
break;
case 9: /* LPR server - Not yet supported */
break;
case 10: /* Impress server - Not yet supported */
break;
case 11: /* RPL server - Not yet supported */
break;
case 12: /* Host name */
if(NetOurHostName[0] == 0){
size = truncate_sz("Host Name", sizeof(NetOurHostName), size);
memcpy(&NetOurHostName, ext + 2, size);
NetOurHostName[size] = 0;
}
break;
case 13: /* Boot file size */
if(size == 2){
NetBootFileSize = ntohs(*(ushort *)(ext + 2));
} else if(size == 4){
NetBootFileSize = ntohl(*(ulong *)(ext + 2));
}
break;
case 14: /* Merit dump file - Not yet supported */
break;
case 15: /* Domain name - Not yet supported */
break;
case 16: /* Swap server - Not yet supported */
break;
case 17: /* Root path */
if(NetOurRootPath[0] == 0){
size = truncate_sz("Root Path", sizeof(NetOurRootPath), size);
memcpy(&NetOurRootPath, ext + 2, size);
NetOurRootPath[size] = 0;
}
break;
case 18: /* Extension path - Not yet supported */
/*
* This can be used to send the information of the
* vendor area in another file that the client can
* access via TFTP.
*/
break;
/* IP host layer fields */
case 40: /* NIS Domain name */
if(NetOurNISDomain[0] == 0){
size = truncate_sz("NIS Domain Name", sizeof(NetOurNISDomain), size);
memcpy(&NetOurNISDomain, ext + 2, size);
NetOurNISDomain[size] = 0;
}
break;
/* Application layer fields */
case 43: /* Vendor specific info - Not yet supported */
/*
* Binary information to exchange specific
* product information.
*/
break;
/* Reserved (custom) fields (128..254) */
}
}
static void link_local_timeout(void)
{
switch (state) {
case PROBE:
/* timeouts in the PROBE state mean no conflicting ARP packets
have been received, so we can progress through the states */
if (nprobes < PROBE_NUM) {
nprobes++;
debug_cond(DEBUG_LL_STATE, "probe/%u %s@%pI4\n",
nprobes, eth_get_name(), &ip);
arp_raw_request(0, NetEtherNullAddr, ip);
timeout_ms = PROBE_MIN * 1000;
timeout_ms += random_delay_ms(PROBE_MAX - PROBE_MIN);
} else {
/* Switch to announce state */
state = ANNOUNCE;
nclaims = 0;
debug_cond(DEBUG_LL_STATE, "announce/%u %s@%pI4\n",
nclaims, eth_get_name(), &ip);
arp_raw_request(ip, NetOurEther, ip);
timeout_ms = ANNOUNCE_INTERVAL * 1000;
}
break;
case RATE_LIMIT_PROBE:
/* timeouts in the RATE_LIMIT_PROBE state mean no conflicting
ARP packets have been received, so we can move immediately
to the announce state */
state = ANNOUNCE;
nclaims = 0;
debug_cond(DEBUG_LL_STATE, "announce/%u %s@%pI4\n",
nclaims, eth_get_name(), &ip);
arp_raw_request(ip, NetOurEther, ip);
timeout_ms = ANNOUNCE_INTERVAL * 1000;
break;
case ANNOUNCE:
/* timeouts in the ANNOUNCE state mean no conflicting ARP
packets have been received, so we can progress through
the states */
if (nclaims < ANNOUNCE_NUM) {
nclaims++;
debug_cond(DEBUG_LL_STATE, "announce/%u %s@%pI4\n",
nclaims, eth_get_name(), &ip);
arp_raw_request(ip, NetOurEther, ip);
timeout_ms = ANNOUNCE_INTERVAL * 1000;
} else {
/* Switch to monitor state */
state = MONITOR;
printf("Successfully assigned %pI4\n", &ip);
NetCopyIP(&NetOurIP, &ip);
ready = 1;
conflicts = 0;
timeout_ms = -1;
/* Never timeout in the monitor state */
NetSetTimeout(0, NULL);
/* NOTE: all other exit paths should deconfig ... */
net_set_state(NETLOOP_SUCCESS);
return;
}
break;
case DEFEND:
/* We won! No ARP replies, so just go back to monitor */
state = MONITOR;
timeout_ms = -1;
conflicts = 0;
break;
default:
/* Invalid, should never happen. Restart the whole protocol */
state = PROBE;
ip = pick();
timeout_ms = 0;
nprobes = 0;
nclaims = 0;
break;
}
configure_wait();
}
static void TftpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
{
ushort proto;
int i;
static int ledcount=0,ledstate=1;
if (dest != TftpOurPort)
{
return;
}
/* don't care the packets that donot send to TFTP port */
if (TftpState != STATE_RRQ && src != TftpServerPort)
{
return;
}
if (len < 2)
{
return;
}
#if 0
if (0==ledcount%64)/*the led flicker when packet received*/
{
ledstate+=1;
ledstate%=2;
}
if(0==ledstate%2)
LEDON(11);
else
LEDOFF(11);
++ledcount;
if (0xffffff==i)
i=0;
#endif
len -= 2;
/* warning: don't use increment (++) in ntohs() macros!! */
proto = *((ushort *)pkt)++;
switch (ntohs(proto))
{
case TFTP_RRQ:
printf("\n Get read request from:(");
print_IPaddr(TempServerIP);
printf(")\n");
NetCopyIP(&NetServerIP,&TempServerIP);
TftpServerPort = src;
TftpBlock = 1;
TftpBlockWrapOffset = 0;
TftpState = STATE_RRQ;
for (i=0; i<13; i++)
{
if (*((uint8_t *)pkt)++ != asuslink[i])
break;
}
if (i==13)
{ /* it's the firmware transmitting situation */
/* here get the IP address from the first packet. */
NetOurIP = (*((uint8_t *)pkt)++) & 0x000000ff;
NetOurIP<<=8;
NetOurIP|= (*((uint8_t *)pkt)++) & 0x000000ff;
NetOurIP<<=8;
NetOurIP|= (*((uint8_t *)pkt)++) & 0x000000ff;
NetOurIP<<=8;
NetOurIP|= (*((uint8_t *)pkt)++) & 0x000000ff;
}
else
{
for (i=0; i<13; i++)
{
if (*((uint8_t *)pkt)++ != maclink[i])
break;
}
if(i==13)
{
/* here get the IP address from the first packet. */
NetOurIP = (*((uint8_t *)pkt)++)& 0x000000ff;
NetOurIP<<=8;
NetOurIP|=(*((uint8_t *)pkt)++)& 0x000000ff;
NetOurIP<<=8;
NetOurIP|=(*((uint8_t *)pkt)++)& 0x000000ff;
NetOurIP<<=8;
NetOurIP|=(*((uint8_t *)pkt)++)& 0x000000ff;
}
}
TftpdSend();//send a vacant Data packet as a ACK
break;
case TFTP_WRQ:
TftpServerPort = src;
TftpBlock = 0;
TftpState = STATE_WRQ;
TftpdSend();
break;
case TFTP_DATA:
if (len < 2)
return;
len -= 2;
TftpBlock = ntohs(*(ushort *)pkt);
/*
* RFC1350 specifies that the first data packet will
* have sequence number 1. If we receive a sequence
* number of 0 this means that there was a wrap
* around of the (16 bit) counter.
*/
if (TftpBlock == 0)
{
printf("\n\t %lu MB reveived\n\t ", TftpBlockWrapOffset>>20);
}
else
{
if (((TftpBlock - 1) % 10) == 0)
static void TftpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
{
ushort proto;
int i;
if (dest != TftpOurPort)
{
return;
}
/* don't care the packets that donot send to TFTP port */
if (TftpState != STATE_RRQ && src != TftpServerPort)
{
return;
}
if (len < 2)
{
return;
}
len -= 2;
/* warning: don't use increment (++) in ntohs() macros!! */
proto = *((ushort *)pkt)++;
switch (ntohs(proto))
{
case TFTP_RRQ:
printf("\n Get read request from:(");
print_IPaddr(TempServerIP);
printf(")\n");
NetCopyIP(&NetServerIP,&TempServerIP);
TftpServerPort = src;
TftpBlock = 1;
TftpBlockWrapOffset = 0;
TftpState = STATE_RRQ;
TftpdSend();//send a vacant Data packet as a ACK
break;
case TFTP_WRQ:
TftpServerPort = src;
TftpBlock = 0;
TftpState = STATE_WRQ;
TftpdSend();
break;
case TFTP_DATA:
if (len < 2)
return;
len -= 2;
TftpBlock = ntohs(*(ushort *)pkt);
/*
* RFC1350 specifies that the first data packet will
* have sequence number 1. If we receive a sequence
* number of 0 this means that there was a wrap
* around of the (16 bit) counter.
*/
if (TftpBlock == 0)
{
printf("\n\t %lu MB reveived\n\t ", TftpBlockWrapOffset>>20);
}
else
{
if (((TftpBlock - 1) % 10) == 0)
//extern int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
void recoveryHandle(void)
{
char cmd[256];
char img[10];
char * argv[3];
char *env;
MV_32 imagAddr, imagSize = 0, netflag = 1;
char ip[16]= {"dhcp"};
char* usbload[5];
unsigned int netwait = 3000;
int upgrade = -1;
/* get the loadaddr env var */
if (!getenv("loadaddr")) {
printf("Missing loadaddr environment variable assuming default (%s)!\n", RCVR_LOAD_ADDR);
setenv("loadaddr",RCVR_LOAD_ADDR);
saveenv();
}
#ifdef CONFIG_USB_STORAGE
/* First try to perform recovery from USB DOK*/
/* try to recognize storage devices immediately */
if (usb_init() >= 0)
{
if (usb_stor_scan(1) >= 0)
{
netflag = 0;
usbload[0] = "usbload";
usbload[1] = "usb";
usbload[2] = "0:1";
usbload[3] = getenv("loadaddr");
usbload[4] = "/multiware.img";
printf("Trying to load image from USB flash drive using FAT FS\n");
if (do_fat_fsload(0, 0, 5, usbload) == 1)
{
printf("Trying to load image from USB flash drive using ext2 FS partition 0\n");
usbload[2] = "0:0";
if(do_ext2load(0, 0, 5, usbload) == 1)
{
printf("Trying to load image from USB flash drive using ext2 FS partition 1\n");
usbload[2] = "0:1";
if(do_ext2load(0, 0, 5, usbload) == 1)
{
printf("Couldn't load recovery image from USB flash drive, Trying network interface\n");
netflag = 1;
}
else
{
env = getenv("filesize");
usbload[3] = getenv("loadaddr");
imagSize = simple_strtoul(env, NULL, 16); /* get the filesize env var */
/* Trying to check if we forced to upgrade by placing upgrade.me */
usbload[4] = "/upgrade.me";
usbload[3] = "0x000000000";
env=getenv("loadaddr");
imagAddr=simple_strtoul(env, NULL, 16);
sprintf(usbload[3], "0x%x", imagAddr + imagSize + 1);
printf("dummyaddr:%s\n", usbload[3]);
upgrade=do_ext2load(0, 0, 5, usbload);
}
}
else
{
env = getenv("filesize");
imagSize = simple_strtoul(env, NULL, 16); /* get the filesize env var */
/* Trying to check if we forced to upgrade by placing upgrade.me */
usbload[4] = "/upgrade.me";
usbload[3] = "0x000000000";
env=getenv("loadaddr");
imagAddr=simple_strtoul(env, NULL, 16);
sprintf(usbload[3], "0x%x", imagAddr + imagSize + 1);
printf("dummyaddr:%s\n", usbload[3]);
upgrade=do_ext2load(0, 0, 5, usbload);
}
}
else
{
env = getenv("filesize");
imagSize = simple_strtoul(env, NULL, 16); /* get the filesize env var */
/* Trying to check if we forced to upgrade by placing upgrade.me */
usbload[4] = "/upgrade.me";
usbload[3] = "0x000000000";
env=getenv("loadaddr");
imagAddr=simple_strtoul(env, NULL, 16);
sprintf(usbload[3], "0x%x", imagAddr + imagSize + 1);
printf("dummyaddr:%s\n", usbload[3]);
upgrade=do_fat_fsload(0, 0, 5, usbload);
}
// Decide on upgrade/init mode
if (upgrade == 0)
sprintf(ip, "usb_upgrade");
else
sprintf(ip, "usb");
printf("USB mode:%s\n", ip);
}
}
#endif
if(netflag == 1)
{
/* if recovery ip set same as our ip then skip dhcp */
while ( strcmp(getenv("rcvrip"), getenv("ipaddr")) && (netwait > 0) )
{
/* Perform the DHCP */
printf("Aquiring an IP address using DHCP after delay...\n");
mvOsDelay(netwait);
netwait-=1000;
if (NetLoop(DHCP) != -1)
{
/* We'vev got DHCP progressing with recovery */
printf("DHCP should be ready for Recovery.\n");
break;
}
}
/* No DHCP after timeout or forced */
if ( !strcmp(getenv("rcvrip"), getenv("ipaddr")) || (netwait <= 0) )
{
ulong tmpip;
printf("No DHCP after timeout or manual IP address configured, switching to static IP address (%s)!\n", getenv("rcvrip"));
tmpip = getenv_IPaddr ("rcvrip");
NetCopyIP(&NetOurIP, &tmpip);
sprintf(ip, "static");
}
/* Perform the recovery */
printf("Starting retrieval of recovery image over network...\n");
if ((imagSize = NetLoop(RCVR)) == -1)
{
printf("Failed\n");
return;
}
}
switch (mvBoardIdGet())
{
case RD_88F6510_SFU_ID:
case RD_88F6560_GW_ID:
case DB_88F6535_BP_ID:
setenv("bootcmd","setenv bootargs ${console} ubi.mtd=2 root=ubi0:rootfsU rootfstype=ubifs ${mvNetConfig} ${mvPhoneConfig}; nand read.e ${loadaddr} 0x200000 0x400000; bootm ${loadaddr};");
setenv("console","console=ttyS0,115200");
saveenv();
break;
}
printf("\nPermanent bootcmd: %s\n", getenv("bootcmd"));
printf("\nPermanent console: %s\n", getenv("console"));
/* This assignment to cmd should execute prior to the RD setenv and saveenv below*/
sprintf(cmd,"setenv bootargs ${console} root=/dev/ram0 ${mvNetConfig} recovery=%s rcvrip=%s:%s%s ethact=${ethact} ethaddr=%s eth1addr=%s; bootm ${loadaddr};", ip, getenv("rcvrip"), getenv("serverip"), getenv("bootargs_end"), getenv("ethaddr"), getenv("eth1addr"));
setenv("bootcmd", cmd);
printf("\nRecovery bootcmd: %s\n", cmd);
printf("Booting recovery image at: [%s]...\n", getenv("loadaddr"));
sprintf(cmd, "boot");
sprintf(img, "%s", getenv("loadaddr"));
argv[0] = cmd;
argv[1] = img;
do_bootd(NULL, 0, 2, argv);
}
void ArpReceive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
{
struct arp_hdr *arp;
IPaddr_t reply_ip_addr;
uchar *pkt;
int eth_hdr_size;
/*
* We have to deal with two types of ARP packets:
* - REQUEST packets will be answered by sending our
* IP address - if we know it.
* - REPLY packates are expected only after we asked
* for the TFTP server's or the gateway's ethernet
* address; so if we receive such a packet, we set
* the server ethernet address
*/
debug_cond(DEBUG_NET_PKT, "Got ARP\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_hrd) != ARP_ETHER)
return;
if (ntohs(arp->ar_pro) != PROT_IP)
return;
if (arp->ar_hln != ARP_HLEN)
return;
if (arp->ar_pln != ARP_PLEN)
return;
if (NetOurIP == 0)
return;
if (NetReadIP(&arp->ar_tpa) != NetOurIP)
return;
switch (ntohs(arp->ar_op)) {
case ARPOP_REQUEST:
/* reply with our IP address */
debug_cond(DEBUG_DEV_PKT, "Got ARP REQUEST, return our IP\n");
pkt = (uchar *)et;
eth_hdr_size = net_update_ether(et, et->et_src, PROT_ARP);
pkt += eth_hdr_size;
arp->ar_op = htons(ARPOP_REPLY);
memcpy(&arp->ar_tha, &arp->ar_sha, ARP_HLEN);
NetCopyIP(&arp->ar_tpa, &arp->ar_spa);
memcpy(&arp->ar_sha, NetOurEther, ARP_HLEN);
NetCopyIP(&arp->ar_spa, &NetOurIP);
#ifdef CONFIG_CMD_LINK_LOCAL
/*
* Work-around for brain-damaged Cisco equipment with
* arp-proxy enabled.
*
* If the requesting IP is not on our subnet, wait 5ms to
* reply to ARP request so that our reply will overwrite
* the arp-proxy's instead of the other way around.
*/
if ((NetReadIP(&arp->ar_tpa) & NetOurSubnetMask) !=
(NetReadIP(&arp->ar_spa) & NetOurSubnetMask))
udelay(5000);
#endif
NetSendPacket((uchar *)et, eth_hdr_size + ARP_HDR_SIZE);
return;
case ARPOP_REPLY: /* arp reply */
/* are we waiting for a reply */
if (!NetArpWaitPacketIP)
break;
#ifdef CONFIG_KEEP_SERVERADDR
if (NetServerIP == NetArpWaitPacketIP) {
char buf[20];
sprintf(buf, "%pM", &arp->ar_sha);
setenv("serveraddr", buf);
}
#endif
reply_ip_addr = NetReadIP(&arp->ar_spa);
/* matched waiting packet's address */
if (reply_ip_addr == NetArpWaitReplyIP) {
debug_cond(DEBUG_DEV_PKT,
"Got ARP REPLY, set eth addr (%pM)\n",
arp->ar_data);
/* save address for later use */
if (NetArpWaitPacketMAC != NULL)
memcpy(NetArpWaitPacketMAC,
&arp->ar_sha, ARP_HLEN);
net_get_arp_handler()((uchar *)arp, 0, reply_ip_addr,
0, len);
/* set the mac address in the waiting packet's header
and transmit it */
memcpy(((struct ethernet_hdr *)NetTxPacket)->et_dest,
&arp->ar_sha, ARP_HLEN);
NetSendPacket(NetTxPacket, NetArpWaitTxPacketSize);
/* no arp request pending now */
NetArpWaitPacketIP = 0;
NetArpWaitTxPacketSize = 0;
NetArpWaitPacketMAC = NULL;
}
return;
default:
debug("Unexpected ARP opcode 0x%x\n",
ntohs(arp->ar_op));
return;
}
}