Merge with git://www.denx.de/git/u-boot.git

8 files changed, 392 insertions, 100 deletions

diff --git a/net/bootp.c b/net/bootp.c
index 1de9a8f2c6a..be1ee332a5f 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -31,7 +31,7 @@
 
 #define BOOTP_VENDOR_MAGIC	0x63825363	/* RFC1048 Magic Cookie		*/
 
-#if (CONFIG_COMMANDS & CFG_CMD_NET)
+#if defined(CONFIG_CMD_NET)
 
 #define TIMEOUT		5		/* Seconds before trying BOOTP again	*/
 #ifndef CONFIG_NET_RETRY_COUNT
@@ -53,7 +53,7 @@ int		BootpTry;
 ulong		seed1, seed2;
 #endif
 
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 dhcp_state_t dhcp_state = INIT;
 unsigned long dhcp_leasetime = 0;
 IPaddr_t NetDHCPServerIP = 0;
@@ -76,12 +76,12 @@ static char *dhcpmsg2str(int type)
 }
 #endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
+#if defined(CONFIG_BOOTP_VENDOREX)
 extern u8 *dhcp_vendorex_prep (u8 *e); /*rtn new e after add own opts. */
 extern u8 *dhcp_vendorex_proc (u8 *e); /*rtn next e if mine,else NULL  */
 #endif
 
-#endif	/* CFG_CMD_DHCP */
+#endif
 
 static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len)
 {
@@ -120,10 +120,12 @@ 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 *)NetRxPkt)->et_src, 6);
+#endif
 	if (strlen(bp->bp_file) > 0)
 		copy_filename (BootFile, bp->bp_file, sizeof(BootFile));
 
@@ -148,7 +150,7 @@ static int truncate_sz (const char *name, int maxlen, int curlen)
 	return (curlen);
 }
 
-#if !(CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if !defined(CONFIG_CMD_DHCP)
 
 static void BootpVendorFieldProcess (u8 * ext)
 {
@@ -181,7 +183,7 @@ static void BootpVendorFieldProcess (u8 * ext)
 		if (NetOurDNSIP == 0) {
 			NetCopyIP (&NetOurDNSIP, (IPaddr_t *) (ext + 2));
 		}
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+#if defined(CONFIG_BOOTP_DNS2)
 		if ((NetOurDNS2IP == 0) && (size > 4)) {
 			NetCopyIP (&NetOurDNS2IP, (IPaddr_t *) (ext + 2 + 4));
 		}
@@ -344,7 +346,7 @@ BootpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
 			 */
 			NetState = NETLOOP_SUCCESS;
 			return;
-#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+#if defined(CONFIG_CMD_NFS)
 		} else if (strcmp(s, "NFS") == 0) {
 			/*
 			 * Use NFS to load the bootfile.
@@ -357,7 +359,7 @@ BootpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
 
 	TftpStart();
 }
-#endif	/* !CFG_CMD_DHCP */
+#endif
 
 /*
  *	Timeout on BOOTP/DHCP request.
@@ -377,16 +379,16 @@ BootpTimeout(void)
 /*
  *	Initialize BOOTP extension fields in the request.
  */
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP)
 {
 	u8 *start = e;
 	u8 *cnt;
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
+#if defined(CONFIG_BOOTP_VENDOREX)
 	u8 *x;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME)
+#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
 	char *hostname;
 #endif
 
@@ -425,7 +427,7 @@ static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t R
 		*e++ = tmp >> 8;
 		*e++ = tmp & 0xff;
 	}
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME)
+#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
 	if ((hostname = getenv ("hostname"))) {
 		int hostnamelen = strlen (hostname);
 
@@ -436,7 +438,7 @@ static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t R
 	}
 #endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
+#if defined(CONFIG_BOOTP_VENDOREX)
 	if ((x = dhcp_vendorex_prep (e)))
 		return x - start;
 #endif
@@ -444,39 +446,39 @@ static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t R
 	*e++ = 55;		/* Parameter Request List */
 	 cnt = e++;		/* Pointer to count of requested items */
 	*cnt = 0;
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK)
+#if defined(CONFIG_BOOTP_SUBNETMASK)
 	*e++  = 1;		/* Subnet Mask */
 	*cnt += 1;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_TIMEOFFSET)
+#if defined(CONFIG_BOOTP_TIMEOFFSET)
 	*e++  = 2;
 	*cnt += 1;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY)
+#if defined(CONFIG_BOOTP_GATEWAY)
 	*e++  = 3;		/* Router Option */
 	*cnt += 1;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS)
+#if defined(CONFIG_BOOTP_DNS)
 	*e++  = 6;		/* DNS Server(s) */
 	*cnt += 1;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME)
+#if defined(CONFIG_BOOTP_HOSTNAME)
 	*e++  = 12;		/* Hostname */
 	*cnt += 1;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE)
+#if defined(CONFIG_BOOTP_BOOTFILESIZE)
 	*e++  = 13;		/* Boot File Size */
 	*cnt += 1;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH)
+#if defined(CONFIG_BOOTP_BOOTPATH)
 	*e++  = 17;		/* Boot path */
 	*cnt += 1;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN)
+#if defined(CONFIG_BOOTP_NISDOMAIN)
 	*e++  = 40;		/* NIS Domain name request */
 	*cnt += 1;
 #endif
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NTPSERVER)
+#if defined(CONFIG_BOOTP_NTPSERVER)
 	*e++  = 42;
 	*cnt += 1;
 #endif
@@ -491,9 +493,9 @@ static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t R
 	return e - start;
 }
 
-#else	/* CFG_CMD_DHCP */
+#else
 /*
- *	Warning: no field size check - change CONFIG_BOOTP_MASK at your own risk!
+ *	Warning: no field size check - change CONFIG_BOOTP_* at your own risk!
  */
 static int BootpExtended (u8 * e)
 {
@@ -504,7 +506,7 @@ static int BootpExtended (u8 * e)
 	*e++ = 83;
 	*e++ = 99;
 
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 	*e++ = 53;		/* DHCP Message Type */
 	*e++ = 1;
 	*e++ = DHCP_DISCOVER;
@@ -513,45 +515,45 @@ static int BootpExtended (u8 * e)
 	*e++ = 2;
 	*e++ = (576 - 312 + OPT_SIZE) >> 16;
 	*e++ = (576 - 312 + OPT_SIZE) & 0xff;
-#endif /* CFG_CMD_DHCP */
+#endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK)
+#if defined(CONFIG_BOOTP_SUBNETMASK)
 	*e++ = 1;		/* Subnet mask request */
 	*e++ = 4;
 	e   += 4;
 #endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY)
+#if defined(CONFIG_BOOTP_GATEWAY)
 	*e++ = 3;		/* Default gateway request */
 	*e++ = 4;
 	e   += 4;
 #endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS)
+#if defined(CONFIG_BOOTP_DNS)
 	*e++ = 6;		/* Domain Name Server */
 	*e++ = 4;
 	e   += 4;
 #endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME)
+#if defined(CONFIG_BOOTP_HOSTNAME)
 	*e++ = 12;		/* Host name request */
 	*e++ = 32;
 	e   += 32;
 #endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE)
+#if defined(CONFIG_BOOTP_BOOTFILESIZE)
 	*e++ = 13;		/* Boot file size */
 	*e++ = 2;
 	e   += 2;
 #endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH)
+#if defined(CONFIG_BOOTP_BOOTPATH)
 	*e++ = 17;		/* Boot path */
 	*e++ = 32;
 	e   += 32;
 #endif
 
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN)
+#if defined(CONFIG_BOOTP_NISDOMAIN)
 	*e++ = 40;		/* NIS Domain name request */
 	*e++ = 32;
 	e   += 32;
@@ -561,7 +563,7 @@ static int BootpExtended (u8 * e)
 
 	return e - start;
 }
-#endif	/* CFG_CMD_DHCP */
+#endif
 
 void
 BootpRequest (void)
@@ -570,7 +572,7 @@ BootpRequest (void)
 	Bootp_t *bp;
 	int ext_len, pktlen, iplen;
 
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 	dhcp_state = INIT;
 #endif
 
@@ -678,11 +680,11 @@ BootpRequest (void)
 	copy_filename (bp->bp_file, BootFile, sizeof(bp->bp_file));
 
 	/* Request additional information from the BOOTP/DHCP server */
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 	ext_len = DhcpExtended((u8 *)bp->bp_vend, DHCP_DISCOVER, 0, 0);
 #else
 	ext_len = BootpExtended((u8 *)bp->bp_vend);
-#endif	/* CFG_CMD_DHCP */
+#endif
 
 	/*
 	 *	Bootp ID is the lower 4 bytes of our ethernet address
@@ -705,16 +707,16 @@ BootpRequest (void)
 	NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
 	NetSetTimeout(SELECT_TIMEOUT * CFG_HZ, BootpTimeout);
 
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 	dhcp_state = SELECTING;
 	NetSetHandler(DhcpHandler);
 #else
 	NetSetHandler(BootpHandler);
-#endif	/* CFG_CMD_DHCP */
+#endif
 	NetSendPacket(NetTxPacket, pktlen);
 }
 
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 static void DhcpOptionsProcess (uchar * popt, Bootp_t *bp)
 {
 	uchar *end = popt + BOOTP_HDR_SIZE;
@@ -726,7 +728,7 @@ static void DhcpOptionsProcess (uchar * popt, Bootp_t *bp)
 		case 1:
 			NetCopyIP (&NetOurSubnetMask, (popt + 2));
 			break;
-#if (CONFIG_COMMANDS & CFG_CMD_SNTP) && (CONFIG_BOOTP_MASK & CONFIG_BOOTP_TIMEOFFSET)
+#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
 		case 2:		/* Time offset	*/
 			NetCopyLong (&NetTimeOffset, (ulong *) (popt + 2));
 			NetTimeOffset = ntohl (NetTimeOffset);
@@ -737,7 +739,7 @@ static void DhcpOptionsProcess (uchar * popt, Bootp_t *bp)
 			break;
 		case 6:
 			NetCopyIP (&NetOurDNSIP, (popt + 2));
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+#if defined(CONFIG_BOOTP_DNS2)
 			if (*(popt + 1) > 4) {
 				NetCopyIP (&NetOurDNS2IP, (popt + 2 + 4));
 			}
@@ -755,7 +757,7 @@ static void DhcpOptionsProcess (uchar * popt, Bootp_t *bp)
 			memcpy (&NetOurRootPath, popt + 2, size);
 			NetOurRootPath[size] = 0;
 			break;
-#if (CONFIG_COMMANDS & CFG_CMD_SNTP) && (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NTPSERVER)
+#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
 		case 42:	/* NTP server IP */
 			NetCopyIP (&NetNtpServerIP, (popt + 2));
 			break;
@@ -801,7 +803,7 @@ static void DhcpOptionsProcess (uchar * popt, Bootp_t *bp)
 			}
 			break;
 		default:
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
+#if defined(CONFIG_BOOTP_VENDOREX)
 			if (dhcp_vendorex_proc (popt))
 				break;
 #endif
@@ -950,7 +952,7 @@ DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
 					 */
 					NetState = NETLOOP_SUCCESS;
 					return;
-#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+#if defined(CONFIG_CMD_NFS)
 				} else if (strcmp(s, "NFS") == 0) {
 					/*
 					 * Use NFS to load the bootfile.
@@ -975,6 +977,6 @@ void DhcpRequest(void)
 {
 	BootpRequest();
 }
-#endif	/* CFG_CMD_DHCP */
+#endif
 
-#endif /* CFG_CMD_NET */
+#endif
diff --git a/net/bootp.h b/net/bootp.h
index 0b3163901e3..ba9826e914c 100644
--- a/net/bootp.h
+++ b/net/bootp.h
@@ -18,7 +18,7 @@
 /*
  *	BOOTP header.
  */
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 #define OPT_SIZE 312	/* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */
 #else
 #define OPT_SIZE 64
diff --git a/net/eth.c b/net/eth.c
index baf31f07784..e7f1220591c 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -26,7 +26,7 @@
 #include <net.h>
 #include <miiphy.h>
 
-#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
 
 #ifdef CFG_GT_6426x
 extern int gt6426x_eth_initialize(bd_t *bis);
@@ -40,6 +40,7 @@ extern int eth_3com_initialize(bd_t*);
 extern int fec_initialize(bd_t*);
 extern int inca_switch_initialize(bd_t*);
 extern int mpc5xxx_fec_initialize(bd_t*);
+extern int mpc512x_fec_initialize(bd_t*);
 extern int mpc8220_fec_initialize(bd_t*);
 extern int mv6436x_eth_initialize(bd_t *);
 extern int mv6446x_eth_initialize(bd_t *);
@@ -144,7 +145,7 @@ int eth_initialize(bd_t *bis)
 	eth_current = NULL;
 
 	show_boot_progress (64);
-#if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 	miiphy_init();
 #endif
 
@@ -169,6 +170,9 @@ int eth_initialize(bd_t *bis)
 #if defined(CONFIG_MPC5xxx_FEC)
 	mpc5xxx_fec_initialize(bis);
 #endif
+#if defined(CONFIG_MPC512x_FEC)
+	mpc512x_fec_initialize (bis);
+#endif
 #if defined(CONFIG_MPC8220_FEC)
 	mpc8220_fec_initialize(bis);
 #endif
@@ -353,6 +357,51 @@ void eth_set_enetaddr(int num, char *addr) {
 
 	memcpy(dev->enetaddr, enetaddr, 6);
 }
+#ifdef CONFIG_MCAST_TFTP
+/* Multicast.
+ * mcast_addr: multicast ipaddr from which multicast Mac is made
+ * join: 1=join, 0=leave.
+ */
+int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
+{
+ u8 mcast_mac[6];
+	if (!eth_current || !eth_current->mcast)
+		return -1;
+	mcast_mac[5] = htonl(mcast_ip) & 0xff;
+	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
+	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
+	mcast_mac[2] = 0x5e;
+	mcast_mac[1] = 0x0;
+	mcast_mac[0] = 0x1;
+	return eth_current->mcast(eth_current, mcast_mac, join);
+}
+
+/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
+ * and this is the ethernet-crc method needed for TSEC -- and perhaps
+ * some other adapter -- hash tables
+ */
+#define CRCPOLY_LE 0xedb88320
+u32 ether_crc (size_t len, unsigned char const *p)
+{
+	int i;
+	u32 crc;
+	crc = ~0;
+	while (len--) {
+		crc ^= *p++;
+		for (i = 0; i < 8; i++)
+			crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
+	}
+	/* an reverse the bits, cuz of way they arrive -- last-first */
+	crc = (crc >> 16) | (crc << 16);
+	crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
+	crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
+	crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
+	crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
+	return crc;
+}
+
+#endif
+
 
 int eth_init(bd_t *bis)
 {
@@ -458,16 +507,18 @@ char *eth_get_name (void)
 {
 	return (eth_current ? eth_current->name : "unknown");
 }
-#elif (CONFIG_COMMANDS & CFG_CMD_NET) && !defined(CONFIG_NET_MULTI)
+#elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
 
 extern int at91rm9200_miiphy_initialize(bd_t *bis);
 extern int emac4xx_miiphy_initialize(bd_t *bis);
 extern int mcf52x2_miiphy_initialize(bd_t *bis);
 extern int ns7520_miiphy_initialize(bd_t *bis);
+extern int dm644x_eth_miiphy_initialize(bd_t *bis);
+
 
 int eth_initialize(bd_t *bis)
 {
-#if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 	miiphy_init();
 #endif
 
@@ -484,6 +535,9 @@ int eth_initialize(bd_t *bis)
 #if defined(CONFIG_NETARM)
 	ns7520_miiphy_initialize(bis);
 #endif
+#if defined(CONFIG_DRIVER_TI_EMAC)
+	dm644x_eth_miiphy_initialize(bis);
+#endif
 	return 0;
 }
 #endif
diff --git a/net/net.c b/net/net.c
index 2ff7bfc09f0..c47610e7455 100644
--- a/net/net.c
+++ b/net/net.c
@@ -86,11 +86,11 @@
 #include <status_led.h>
 #include <miiphy.h>
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_SNTP)
+#if defined(CONFIG_CMD_SNTP)
 #include "sntp.h"
 #endif
 
-#if (CONFIG_COMMANDS & CFG_CMD_NET)
+#if defined(CONFIG_CMD_NET)
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -110,7 +110,7 @@ DECLARE_GLOBAL_DATA_PTR;
 IPaddr_t	NetOurSubnetMask=0;		/* Our subnet mask (0=unknown)	*/
 IPaddr_t	NetOurGatewayIP=0;		/* Our gateways IP address	*/
 IPaddr_t	NetOurDNSIP=0;			/* Our DNS IP address		*/
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+#if defined(CONFIG_BOOTP_DNS2)
 IPaddr_t	NetOurDNS2IP=0;			/* Our 2nd DNS IP address	*/
 #endif
 char		NetOurNISDomain[32]={0,};	/* Our NIS domain		*/
@@ -118,6 +118,10 @@ char		NetOurHostName[32]={0,};	/* Our hostname			*/
 char		NetOurRootPath[64]={0,};	/* Our bootpath			*/
 ushort		NetBootFileSize=0;		/* Our bootfile size in blocks	*/
 
+#ifdef CONFIG_MCAST_TFTP	/* Multicast TFTP */
+IPaddr_t Mcast_addr;
+#endif
+
 /** END OF BOOTP EXTENTIONS **/
 
 ulong		NetBootFileXferSize;	/* The actual transferred size of the bootfile (in bytes) */
@@ -133,7 +137,7 @@ uchar		NetBcastAddr[6] =	/* Ethernet bcast address		*/
 			{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 uchar		NetEtherNullAddr[6] =
 			{ 0, 0, 0, 0, 0, 0 };
-#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+#if defined(CONFIG_CMD_CDP)
 uchar		NetCDPAddr[6] =		/* Ethernet bcast address		*/
 			{ 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
 #endif
@@ -150,17 +154,17 @@ ushort		NetOurNativeVLAN = 0xFFFF;	/* ditto			*/
 
 char		BootFile[128];		/* Boot File name			*/
 
-#if (CONFIG_COMMANDS & CFG_CMD_PING)
+#if defined(CONFIG_CMD_PING)
 IPaddr_t	NetPingIP;		/* the ip address to ping 		*/
 
 static void PingStart(void);
 #endif
 
-#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+#if defined(CONFIG_CMD_CDP)
 static void CDPStart(void);
 #endif
 
-#if (CONFIG_COMMANDS & CFG_CMD_SNTP)
+#if defined(CONFIG_CMD_SNTP)
 IPaddr_t	NetNtpServerIP;		/* NTP server IP address		*/
 int		NetTimeOffset=0;	/* offset time from UTC			*/
 #endif
@@ -326,13 +330,13 @@ restart:
 	 */
 
 	switch (protocol) {
-#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+#if defined(CONFIG_CMD_NFS)
 	case NFS:
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_PING)
+#if defined(CONFIG_CMD_PING)
 	case PING:
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_SNTP)
+#if defined(CONFIG_CMD_SNTP)
 	case SNTP:
 #endif
 	case NETCONS:
@@ -344,19 +348,19 @@ restart:
 		NetOurNativeVLAN = getenv_VLAN("nvlan");
 
 		switch (protocol) {
-#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+#if defined(CONFIG_CMD_NFS)
 		case NFS:
 #endif
 		case NETCONS:
 		case TFTP:
 			NetServerIP = getenv_IPaddr ("serverip");
 			break;
-#if (CONFIG_COMMANDS & CFG_CMD_PING)
+#if defined(CONFIG_CMD_PING)
 		case PING:
 			/* nothing */
 			break;
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_SNTP)
+#if defined(CONFIG_CMD_SNTP)
 		case SNTP:
 			/* nothing */
 			break;
@@ -406,7 +410,7 @@ restart:
 			TftpStart();
 			break;
 
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 		case DHCP:
 			/* Start with a clean slate... */
 			BootpTry = 0;
@@ -414,7 +418,7 @@ restart:
 			NetServerIP = getenv_IPaddr ("serverip");
 			DhcpRequest();		/* Basically same as BOOTP */
 			break;
-#endif /* CFG_CMD_DHCP */
+#endif
 
 		case BOOTP:
 			BootpTry = 0;
@@ -425,17 +429,17 @@ restart:
 			RarpTry = 0;
 			RarpRequest ();
 			break;
-#if (CONFIG_COMMANDS & CFG_CMD_PING)
+#if defined(CONFIG_CMD_PING)
 		case PING:
 			PingStart();
 			break;
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+#if defined(CONFIG_CMD_NFS)
 		case NFS:
 			NfsStart();
 			break;
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+#if defined(CONFIG_CMD_CDP)
 		case CDP:
 			CDPStart();
 			break;
@@ -445,7 +449,7 @@ restart:
 			NcStart();
 			break;
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_SNTP)
+#if defined(CONFIG_CMD_SNTP)
 		case SNTP:
 			SntpStart();
 			break;
@@ -458,7 +462,7 @@ restart:
 		break;
 	}
 
-#if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 #if defined(CFG_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
 	/*
 	 * Echo the inverted link state to the fault LED.
@@ -507,7 +511,7 @@ restart:
 		if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) {
 			thand_f *x;
 
-#if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 #  if defined(CFG_FAULT_ECHO_LINK_DOWN) && \
       defined(CONFIG_STATUS_LED) &&	   \
       defined(STATUS_LED_RED)
@@ -687,7 +691,7 @@ NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
 	return 0;	/* transmitted */
 }
 
-#if (CONFIG_COMMANDS & CFG_CMD_PING)
+#if defined(CONFIG_CMD_PING)
 static ushort PingSeqNo;
 
 int PingSend(void)
@@ -775,9 +779,9 @@ static void PingStart(void)
 
 	PingSend();
 }
-#endif	/* CFG_CMD_PING */
+#endif
 
-#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+#if defined(CONFIG_CMD_CDP)
 
 #define CDP_DEVICE_ID_TLV		0x0001
 #define CDP_ADDRESS_TLV			0x0002
@@ -1128,7 +1132,7 @@ static void CDPStart(void)
 
 	CDPSendTrigger();
 }
-#endif	/* CFG_CMD_CDP */
+#endif
 
 
 void
@@ -1140,7 +1144,7 @@ NetReceive(volatile uchar * inpkt, int len)
 	IPaddr_t tmp;
 	int	x;
 	uchar *pkt;
-#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+#if defined(CONFIG_CMD_CDP)
 	int iscdp;
 #endif
 	ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
@@ -1157,7 +1161,7 @@ NetReceive(volatile uchar * inpkt, int len)
 	if (len < ETHER_HDR_SIZE)
 		return;
 
-#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+#if defined(CONFIG_CMD_CDP)
 	/* keep track if packet is CDP */
 	iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0;
 #endif
@@ -1200,7 +1204,7 @@ NetReceive(volatile uchar * inpkt, int len)
 
 		/* if no VLAN active */
 		if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
-#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+#if defined(CONFIG_CMD_CDP)
 				&& iscdp == 0
 #endif
 				)
@@ -1218,7 +1222,7 @@ NetReceive(volatile uchar * inpkt, int len)
 	printf("Receive from protocol 0x%x\n", x);
 #endif
 
-#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+#if defined(CONFIG_CMD_CDP)
 	if (iscdp) {
 		CDPHandler((uchar *)ip, len);
 		return;
@@ -1386,6 +1390,9 @@ NetReceive(volatile uchar * inpkt, int len)
 		}
 		tmp = NetReadIP(&ip->ip_dst);
 		if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) {
+#ifdef CONFIG_MCAST_TFTP
+			if (Mcast_addr != tmp)
+#endif
 			return;
 		}
 		/*
@@ -1416,7 +1423,7 @@ NetReceive(volatile uchar * inpkt, int len)
 				print_IPaddr(icmph->un.gateway);
 				putc(' ');
 				return;
-#if (CONFIG_COMMANDS & CFG_CMD_PING)
+#if defined(CONFIG_CMD_PING)
 			case ICMP_ECHO_REPLY:
 				/*
 				 *	IP header OK.  Pass the packet to the current handler.
@@ -1492,6 +1499,7 @@ NetReceive(volatile uchar * inpkt, int len)
 		}
 #endif
 
+
 #ifdef CONFIG_NETCONSOLE
 		nc_input_packet((uchar *)ip +IP_HDR_SIZE,
 						ntohs(ip->udp_dst),
@@ -1516,7 +1524,7 @@ static int net_check_prereq (proto_t protocol)
 {
 	switch (protocol) {
 		/* Fall through */
-#if (CONFIG_COMMANDS & CFG_CMD_PING)
+#if defined(CONFIG_CMD_PING)
 	case PING:
 		if (NetPingIP == 0) {
 			puts ("*** ERROR: ping address not given\n");
@@ -1524,7 +1532,7 @@ static int net_check_prereq (proto_t protocol)
 		}
 		goto common;
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_SNTP)
+#if defined(CONFIG_CMD_SNTP)
 	case SNTP:
 		if (NetNtpServerIP == 0) {
 			puts ("*** ERROR: NTP server address not given\n");
@@ -1532,7 +1540,7 @@ static int net_check_prereq (proto_t protocol)
 		}
 		goto common;
 #endif
-#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+#if defined(CONFIG_CMD_NFS)
 	case NFS:
 #endif
 	case NETCONS:
@@ -1541,7 +1549,7 @@ static int net_check_prereq (proto_t protocol)
 			puts ("*** ERROR: `serverip' not set\n");
 			return (1);
 		}
-#if (CONFIG_COMMANDS & (CFG_CMD_PING | CFG_CMD_SNTP))
+#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP)
     common:
 #endif
 
@@ -1693,7 +1701,7 @@ void copy_filename (char *dst, char *src, int size)
 	*dst = '\0';
 }
 
-#endif /* CFG_CMD_NET */
+#endif
 
 void ip_to_string (IPaddr_t x, char *s)
 {
diff --git a/net/nfs.c b/net/nfs.c
index de789e1f848..df2caac48c8 100644
--- a/net/nfs.c
+++ b/net/nfs.c
@@ -31,7 +31,7 @@
 
 /*#define NFS_DEBUG*/
 
-#if ((CONFIG_COMMANDS & CFG_CMD_NET) && (CONFIG_COMMANDS & CFG_CMD_NFS))
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_CMD_NFS)
 
 #define HASHES_PER_LINE 65	/* Number of "loading" hashes per line	*/
 #define NFS_TIMEOUT 60
@@ -775,4 +775,4 @@ NfsStart (void)
 	NfsSend ();
 }
 
-#endif /* CONFIG_COMMANDS & CFG_CMD_NFS */
+#endif
diff --git a/net/rarp.c b/net/rarp.c
index 1ba60e803cc..21dfa529c9a 100644
--- a/net/rarp.c
+++ b/net/rarp.c
@@ -29,7 +29,7 @@
 #include "rarp.h"
 #include "tftp.h"
 
-#if (CONFIG_COMMANDS & CFG_CMD_NET)
+#if defined(CONFIG_CMD_NET)
 
 #define TIMEOUT		5		/* Seconds before trying BOOTP again */
 #ifndef	CONFIG_NET_RETRY_COUNT
@@ -59,7 +59,7 @@ RarpHandler(uchar * dummi0, unsigned dummi1, unsigned dummi2, unsigned dummi3)
 			 */
 			NetState = NETLOOP_SUCCESS;
 			return;
-#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+#if defined(CONFIG_CMD_NFS)
 		} else if ((s != NULL) && !strcmp(s, "NFS")) {
 			NfsStart();
 			return;
@@ -119,4 +119,4 @@ RarpRequest (void)
 	NetSetHandler(RarpHandler);
 }
 
-#endif /* CFG_CMD_NET */
+#endif
diff --git a/net/sntp.c b/net/sntp.c
index db8c2c27998..95e75422c10 100644
--- a/net/sntp.c
+++ b/net/sntp.c
@@ -12,7 +12,7 @@
 
 #include "sntp.h"
 
-#if ((CONFIG_COMMANDS & CFG_CMD_NET) && (CONFIG_COMMANDS & CFG_CMD_SNTP))
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_CMD_SNTP)
 
 #define SNTP_TIMEOUT 10
 
@@ -67,7 +67,7 @@ SntpHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
 	memcpy (&seconds, &rpktp->transmit_timestamp, sizeof(ulong));
 
 	to_tm(ntohl(seconds) - 2208988800UL + NetTimeOffset, &tm);
-#if (CONFIG_COMMANDS & CFG_CMD_DATE)
+#if defined(CONFIG_CMD_DATE)
 	rtc_set (&tm);
 #endif
 	printf ("Date: %4d-%02d-%02d Time: %2d:%02d:%02d\n",
@@ -89,4 +89,4 @@ SntpStart (void)
 	SntpSend ();
 }
 
-#endif /* CONFIG_COMMANDS & CFG_CMD_SNTP */
+#endif
diff --git a/net/tftp.c b/net/tftp.c
index f3a54714838..888ec987cfc 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -12,7 +12,7 @@
 
 #undef	ET_DEBUG
 
-#if (CONFIG_COMMANDS & CFG_CMD_NET)
+#if defined(CONFIG_CMD_NET)
 
 #define WELL_KNOWN_PORT	69		/* Well known TFTP port #		*/
 #define TIMEOUT		5		/* Seconds to timeout for a lost pkt	*/
@@ -61,10 +61,43 @@ static char *tftp_filename;
 extern flash_info_t flash_info[];
 #endif
 
+/* 512 is poor choice for ethernet, MTU is typically 1500.
+ * Minus eth.hdrs thats 1468.  Can get 2x better throughput with
+ * almost-MTU block sizes.  At least try... fall back to 512 if need be.
+ */
+#define TFTP_MTU_BLOCKSIZE 1468
+static unsigned short TftpBlkSize=TFTP_BLOCK_SIZE;
+static unsigned short TftpBlkSizeOption=TFTP_MTU_BLOCKSIZE;
+
+#ifdef CONFIG_MCAST_TFTP
+#include <malloc.h>
+#define MTFTP_BITMAPSIZE	0x1000
+static unsigned *Bitmap;
+static int PrevBitmapHole,Mapsize=MTFTP_BITMAPSIZE;
+static uchar ProhibitMcast=0, MasterClient=0;
+static uchar Multicast=0;
+extern IPaddr_t Mcast_addr;
+static int Mcast_port;
+static ulong TftpEndingBlock; /* can get 'last' block before done..*/
+
+static void parse_multicast_oack(char *pkt,int len);
+
+static void
+mcast_cleanup(void)
+{
+	if (Mcast_addr) eth_mcast_join(Mcast_addr, 0);
+	if (Bitmap) free(Bitmap);
+	Bitmap=NULL;
+	Mcast_addr = Multicast = Mcast_port = 0;
+	TftpEndingBlock = -1;
+}
+
+#endif	/* CONFIG_MCAST_TFTP */
+
 static __inline__ void
 store_block (unsigned block, uchar * src, unsigned len)
 {
-	ulong offset = block * TFTP_BLOCK_SIZE + TftpBlockWrapOffset;
+	ulong offset = block * TftpBlkSize + TftpBlockWrapOffset;
 	ulong newsize = offset + len;
 #ifdef CFG_DIRECT_FLASH_TFTP
 	int i, rc = 0;
@@ -90,6 +123,10 @@ store_block (unsigned block, uchar * src, unsigned len)
 	{
 		(void)memcpy((void *)(load_addr + offset), src, len);
 	}
+#ifdef CONFIG_MCAST_TFTP
+	if (Multicast)
+		ext2_set_bit(block, Bitmap);
+#endif
 
 	if (NetBootFileXferSize < newsize)
 		NetBootFileXferSize = newsize;
@@ -108,6 +145,13 @@ TftpSend (void)
 	int			len = 0;
 	volatile ushort *s;
 
+#ifdef CONFIG_MCAST_TFTP
+	/* Multicast TFTP.. non-MasterClients do not ACK data. */
+	if (Multicast
+	 && (TftpState == STATE_DATA)
+	 && (MasterClient == 0))
+		return;
+#endif
 	/*
 	 *	We will always be sending some sort of packet, so
 	 *	cobble together the packet headers now.
@@ -132,11 +176,30 @@ TftpSend (void)
 		printf("send option \"timeout %s\"\n", (char *)pkt);
 #endif
 		pkt += strlen((char *)pkt) + 1;
+		/* try for more effic. blk size */
+		pkt += sprintf((char *)pkt,"blksize%c%d%c",
+				0,htons(TftpBlkSizeOption),0);
+#ifdef CONFIG_MCAST_TFTP
+		/* Check all preconditions before even trying the option */
+		if (!ProhibitMcast
+		 && (Bitmap=malloc(Mapsize))
+		 && eth_get_dev()->mcast) {
+			free(Bitmap);
+			Bitmap=NULL;
+			pkt += sprintf((char *)pkt,"multicast%c%c",0,0);
+		}
+#endif /* CONFIG_MCAST_TFTP */
 		len = pkt - xp;
 		break;
 
-	case STATE_DATA:
 	case STATE_OACK:
+#ifdef CONFIG_MCAST_TFTP
+		/* My turn!  Start at where I need blocks I missed.*/
+		if (Multicast)
+			TftpBlock=ext2_find_next_zero_bit(Bitmap,(Mapsize*8),0);
+		/*..falling..*/
+#endif
+	case STATE_DATA:
 		xp = pkt;
 		s = (ushort *)pkt;
 		*s++ = htons(TFTP_ACK);
@@ -177,8 +240,13 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
 {
 	ushort proto;
 	ushort *s;
+	int i;
 
 	if (dest != TftpOurPort) {
+#ifdef CONFIG_MCAST_TFTP
+		if (Multicast
+		 && (!Mcast_port || (dest != Mcast_port)))
+#endif
 		return;
 	}
 	if (TftpState != STATE_RRQ && src != TftpServerPort) {
@@ -208,6 +276,24 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
 #endif
 		TftpState = STATE_OACK;
 		TftpServerPort = src;
+		/* Check for 'blksize' option */
+		for (i=0;i<len-8;i++) {
+			if (strcmp ((char*)pkt+i,"blksize") == 0) {
+				TftpBlkSize = (unsigned short)
+					simple_strtoul((char*)pkt+i+8,NULL,10);
+#ifdef ET_DEBUG
+				printf ("Blocksize ack: %s, %d\n",
+					(char*)pkt+i+8,TftpBlkSize);
+#endif
+				break;
+			}
+		}
+#ifdef CONFIG_MCAST_TFTP
+		parse_multicast_oack((char *)pkt,len-1);
+		if ((Multicast) && (!MasterClient))
+			TftpState = STATE_DATA;	/* passive.. */
+		else
+#endif
 		TftpSend (); /* Send ACK */
 		break;
 	case TFTP_DATA:
@@ -224,7 +310,7 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
 		 */
 		if (TftpBlock == 0) {
 			TftpBlockWrap++;
-			TftpBlockWrapOffset += TFTP_BLOCK_SIZE * TFTP_SEQUENCE_SIZE;
+			TftpBlockWrapOffset += TftpBlkSize * TFTP_SEQUENCE_SIZE;
 			printf ("\n\t %lu MB received\n\t ", TftpBlockWrapOffset>>20);
 		} else {
 			if (((TftpBlock - 1) % 10) == 0) {
@@ -248,6 +334,11 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
 			TftpBlockWrap = 0;
 			TftpBlockWrapOffset = 0;
 
+#ifdef CONFIG_MCAST_TFTP
+			if (Multicast) { /* start!=1 common if mcast */
+				TftpLastBlock = TftpBlock - 1;
+			} else
+#endif
 			if (TftpBlock != 1) {	/* Assertion */
 				printf ("\nTFTP error: "
 					"First block is not block 1 (%ld)\n"
@@ -274,9 +365,44 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
 		 *	Acknoledge the block just received, which will prompt
 		 *	the server for the next one.
 		 */
+#ifdef CONFIG_MCAST_TFTP
+		/* if I am the MasterClient, actively calculate what my next
+		 * needed block is; else I'm passive; not ACKING
+ 		 */
+		if (Multicast) {
+			if (len < TftpBlkSize)  {
+				TftpEndingBlock = TftpBlock;
+			} else if (MasterClient) {
+				TftpBlock = PrevBitmapHole =
+					ext2_find_next_zero_bit(
+						Bitmap,
+						(Mapsize*8),
+						PrevBitmapHole);
+				if (TftpBlock > ((Mapsize*8) - 1)) {
+					printf ("tftpfile too big\n");
+					/* try to double it and retry */
+					Mapsize<<=1;
+					mcast_cleanup();
+					NetStartAgain ();
+					return;
+				}
+				TftpLastBlock = TftpBlock;
+			}
+		}
+#endif
 		TftpSend ();
 
-		if (len < TFTP_BLOCK_SIZE) {
+#ifdef CONFIG_MCAST_TFTP
+		if (Multicast) {
+			if (MasterClient && (TftpBlock >= TftpEndingBlock)) {
+				puts ("\nMulticast tftp done\n");
+				mcast_cleanup();
+				NetState = NETLOOP_SUCCESS;
+			}
+		}
+		else
+#endif
+		if (len < TftpBlkSize) {
 			/*
 			 *	We received the whole thing.  Try to
 			 *	run it.
@@ -290,6 +416,9 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
 		printf ("\nTFTP error: '%s' (%d)\n",
 					pkt + 2, ntohs(*(ushort *)pkt));
 		puts ("Starting again\n\n");
+#ifdef CONFIG_MCAST_TFTP
+		mcast_cleanup();
+#endif
 		NetStartAgain ();
 		break;
 	}
@@ -301,6 +430,9 @@ TftpTimeout (void)
 {
 	if (++TftpTimeoutCount > TIMEOUT_COUNT) {
 		puts ("\nRetry count exceeded; starting again\n");
+#ifdef CONFIG_MCAST_TFTP
+		mcast_cleanup();
+#endif
 		NetStartAgain ();
 	} else {
 		puts ("T ");
@@ -370,6 +502,7 @@ TftpStart (void)
 	TftpState = STATE_RRQ;
 	/* Use a pseudo-random port unless a specific port is set */
 	TftpOurPort = 1024 + (get_timer(0) % 3072);
+
 #ifdef CONFIG_TFTP_PORT
 	if ((ep = getenv("tftpdstp")) != NULL) {
 		TftpServerPort = simple_strtol(ep, NULL, 10);
@@ -382,8 +515,103 @@ TftpStart (void)
 
 	/* zero out server ether in case the server ip has changed */
 	memset(NetServerEther, 0, 6);
+	/* Revert TftpBlkSize to dflt */
+	TftpBlkSize = TFTP_BLOCK_SIZE;
+#ifdef CONFIG_MCAST_TFTP
+    	mcast_cleanup();
+#endif
 
 	TftpSend ();
 }
 
+#ifdef CONFIG_MCAST_TFTP
+/* Credits: atftp project.
+ */
+
+/* pick up BcastAddr, Port, and whether I am [now] the master-client. *
+ * Frame:
+ *    +-------+-----------+---+-------~~-------+---+
+ *    |  opc  | multicast | 0 | addr, port, mc | 0 |
+ *    +-------+-----------+---+-------~~-------+---+
+ * The multicast addr/port becomes what I listen to, and if 'mc' is '1' then
+ * I am the new master-client so must send ACKs to DataBlocks.  If I am not
+ * master-client, I'm a passive client, gathering what DataBlocks I may and
+ * making note of which ones I got in my bitmask.
+ * In theory, I never go from master->passive..
+ * .. this comes in with pkt already pointing just past opc
+ */
+static void parse_multicast_oack(char *pkt, int len)
+{
+ int i;
+ IPaddr_t addr;
+ char *mc_adr, *port,  *mc;
+
+	mc_adr=port=mc=NULL;
+	/* march along looking for 'multicast\0', which has to start at least
+	 * 14 bytes back from the end.
+	 */
+	for (i=0;i<len-14;i++)
+		if (strcmp (pkt+i,"multicast") == 0)
+			break;
+	if (i >= (len-14)) /* non-Multicast OACK, ign. */
+		return;
+
+	i+=10; /* strlen multicast */
+	mc_adr = pkt+i;
+	for (;i<len;i++) {
+		if (*(pkt+i) == ',') {
+			*(pkt+i) = '\0';
+			if (port) {
+				mc = pkt+i+1;
+				break;
+			} else {
+				port = pkt+i+1;
+			}
+		}
+	}
+	if (!port || !mc_adr || !mc ) return;
+	if (Multicast && MasterClient) {
+		printf ("I got a OACK as master Client, WRONG!\n");
+		return;
+	}
+	/* ..I now accept packets destined for this MCAST addr, port */
+	if (!Multicast) {
+		if (Bitmap) {
+			printf ("Internal failure! no mcast.\n");
+			free(Bitmap);
+			Bitmap=NULL;
+			ProhibitMcast=1;
+			return ;
+		}
+		/* I malloc instead of pre-declare; so that if the file ends
+		 * up being too big for this bitmap I can retry
+		 */
+		if (!(Bitmap = malloc (Mapsize))) {
+			printf ("No Bitmap, no multicast. Sorry.\n");
+			ProhibitMcast=1;
+			return;
+		}
+		memset (Bitmap,0,Mapsize);
+		PrevBitmapHole = 0;
+		Multicast = 1;
+	}
+	addr = string_to_ip(mc_adr);
+	if (Mcast_addr != addr) {
+		if (Mcast_addr)
+			eth_mcast_join(Mcast_addr, 0);
+		if (eth_mcast_join(Mcast_addr=addr, 1)) {
+			printf ("Fail to set mcast, revert to TFTP\n");
+			ProhibitMcast=1;
+			mcast_cleanup();
+			NetStartAgain();
+		}
+	}
+	MasterClient = (unsigned char)simple_strtoul((char *)mc,NULL,10);
+	Mcast_port = (unsigned short)simple_strtoul(port,NULL,10);
+	printf ("Multicast: %s:%d [%d]\n", mc_adr, Mcast_port, MasterClient);
+	return;
+}
+
+#endif /* Multicast TFTP */
+
 #endif /* CFG_CMD_NET */