Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 787 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/net/nfs.c b/qemu/roms/u-boot/net/nfs.c
new file mode 100644
index 000000000..381b75f1c
--- /dev/null
+++ b/qemu/roms/u-boot/net/nfs.c
@@ -0,0 +1,787 @@
+/*
+ * NFS support driver - based on etherboot and U-BOOT's tftp.c
+ *
+ * Masami Komiya <mkomiya@sonare.it> 2004
+ *
+ */
+
+/* NOTE: the NFS code is heavily inspired by the NetBSD netboot code (read:
+ * large portions are copied verbatim) as distributed in OSKit 0.97.  A few
+ * changes were necessary to adapt the code to Etherboot and to fix several
+ * inconsistencies.  Also the RPC message preparation is done "by hand" to
+ * avoid adding netsprintf() which I find hard to understand and use.  */
+
+/* NOTE 2: Etherboot does not care about things beyond the kernel image, so
+ * it loads the kernel image off the boot server (ARP_SERVER) and does not
+ * access the client root disk (root-path in dhcpd.conf), which would use
+ * ARP_ROOTSERVER.  The root disk is something the operating system we are
+ * about to load needs to use.	This is different from the OSKit 0.97 logic.  */
+
+/* NOTE 3: Symlink handling introduced by Anselm M Hoffmeister, 2003-July-14
+ * If a symlink is encountered, it is followed as far as possible (recursion
+ * possible, maximum 16 steps). There is no clearing of ".."'s inside the
+ * path, so please DON'T DO THAT. thx. */
+
+#include <common.h>
+#include <command.h>
+#include <net.h>
+#include <malloc.h>
+#include "nfs.h"
+#include "bootp.h"
+
+#define HASHES_PER_LINE 65	/* Number of "loading" hashes per line	*/
+#define NFS_RETRY_COUNT 30
+#ifndef CONFIG_NFS_TIMEOUT
+# define NFS_TIMEOUT 2000UL
+#else
+# define NFS_TIMEOUT CONFIG_NFS_TIMEOUT
+#endif
+
+#define NFS_RPC_ERR	1
+#define NFS_RPC_DROP	124
+
+static int fs_mounted;
+static unsigned long rpc_id;
+static int nfs_offset = -1;
+static int nfs_len;
+static ulong nfs_timeout = NFS_TIMEOUT;
+
+static char dirfh[NFS_FHSIZE];	/* file handle of directory */
+static char filefh[NFS_FHSIZE]; /* file handle of kernel image */
+
+static enum net_loop_state nfs_download_state;
+static IPaddr_t NfsServerIP;
+static int	NfsSrvMountPort;
+static int	NfsSrvNfsPort;
+static int	NfsOurPort;
+static int	NfsTimeoutCount;
+static int	NfsState;
+#define STATE_PRCLOOKUP_PROG_MOUNT_REQ	1
+#define STATE_PRCLOOKUP_PROG_NFS_REQ	2
+#define STATE_MOUNT_REQ			3
+#define STATE_UMOUNT_REQ		4
+#define STATE_LOOKUP_REQ		5
+#define STATE_READ_REQ			6
+#define STATE_READLINK_REQ		7
+
+static char default_filename[64];
+static char *nfs_filename;
+static char *nfs_path;
+static char nfs_path_buff[2048];
+
+static inline int
+store_block(uchar *src, unsigned offset, unsigned len)
+{
+	ulong newsize = offset + len;
+#ifdef CONFIG_SYS_DIRECT_FLASH_NFS
+	int i, rc = 0;
+
+	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
+		/* start address in flash? */
+		if (load_addr + offset >= flash_info[i].start[0]) {
+			rc = 1;
+			break;
+		}
+	}
+
+	if (rc) { /* Flash is destination for this packet */
+		rc = flash_write((uchar *)src, (ulong)(load_addr+offset), len);
+		if (rc) {
+			flash_perror(rc);
+			return -1;
+		}
+	} else
+#endif /* CONFIG_SYS_DIRECT_FLASH_NFS */
+	{
+		(void)memcpy((void *)(load_addr + offset), src, len);
+	}
+
+	if (NetBootFileXferSize < (offset+len))
+		NetBootFileXferSize = newsize;
+	return 0;
+}
+
+static char*
+basename(char *path)
+{
+	char *fname;
+
+	fname = path + strlen(path) - 1;
+	while (fname >= path) {
+		if (*fname == '/') {
+			fname++;
+			break;
+		}
+		fname--;
+	}
+	return fname;
+}
+
+static char*
+dirname(char *path)
+{
+	char *fname;
+
+	fname = basename(path);
+	--fname;
+	*fname = '\0';
+	return path;
+}
+
+/**************************************************************************
+RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
+**************************************************************************/
+static long *rpc_add_credentials(long *p)
+{
+	int hl;
+	int hostnamelen;
+	char hostname[256];
+
+	strcpy(hostname, "");
+	hostnamelen = strlen(hostname);
+
+	/* Here's the executive summary on authentication requirements of the
+	 * various NFS server implementations:	Linux accepts both AUTH_NONE
+	 * and AUTH_UNIX authentication (also accepts an empty hostname field
+	 * in the AUTH_UNIX scheme).  *BSD refuses AUTH_NONE, but accepts
+	 * AUTH_UNIX (also accepts an empty hostname field in the AUTH_UNIX
+	 * scheme).  To be safe, use AUTH_UNIX and pass the hostname if we have
+	 * it (if the BOOTP/DHCP reply didn't give one, just use an empty
+	 * hostname).  */
+
+	hl = (hostnamelen + 3) & ~3;
+
+	/* Provide an AUTH_UNIX credential.  */
+	*p++ = htonl(1);		/* AUTH_UNIX */
+	*p++ = htonl(hl+20);		/* auth length */
+	*p++ = htonl(0);		/* stamp */
+	*p++ = htonl(hostnamelen);	/* hostname string */
+	if (hostnamelen & 3)
+		*(p + hostnamelen / 4) = 0; /* add zero padding */
+	memcpy(p, hostname, hostnamelen);
+	p += hl / 4;
+	*p++ = 0;			/* uid */
+	*p++ = 0;			/* gid */
+	*p++ = 0;			/* auxiliary gid list */
+
+	/* Provide an AUTH_NONE verifier.  */
+	*p++ = 0;			/* AUTH_NONE */
+	*p++ = 0;			/* auth length */
+
+	return p;
+}
+
+/**************************************************************************
+RPC_LOOKUP - Lookup RPC Port numbers
+**************************************************************************/
+static void
+rpc_req(int rpc_prog, int rpc_proc, uint32_t *data, int datalen)
+{
+	struct rpc_t pkt;
+	unsigned long id;
+	uint32_t *p;
+	int pktlen;
+	int sport;
+
+	id = ++rpc_id;
+	pkt.u.call.id = htonl(id);
+	pkt.u.call.type = htonl(MSG_CALL);
+	pkt.u.call.rpcvers = htonl(2);	/* use RPC version 2 */
+	pkt.u.call.prog = htonl(rpc_prog);
+	pkt.u.call.vers = htonl(2);	/* portmapper is version 2 */
+	pkt.u.call.proc = htonl(rpc_proc);
+	p = (uint32_t *)&(pkt.u.call.data);
+
+	if (datalen)
+		memcpy((char *)p, (char *)data, datalen*sizeof(uint32_t));
+
+	pktlen = (char *)p + datalen*sizeof(uint32_t) - (char *)&pkt;
+
+	memcpy((char *)NetTxPacket + NetEthHdrSize() + IP_UDP_HDR_SIZE,
+		(char *)&pkt, pktlen);
+
+	if (rpc_prog == PROG_PORTMAP)
+		sport = SUNRPC_PORT;
+	else if (rpc_prog == PROG_MOUNT)
+		sport = NfsSrvMountPort;
+	else
+		sport = NfsSrvNfsPort;
+
+	NetSendUDPPacket(NetServerEther, NfsServerIP, sport, NfsOurPort,
+		pktlen);
+}
+
+/**************************************************************************
+RPC_LOOKUP - Lookup RPC Port numbers
+**************************************************************************/
+static void
+rpc_lookup_req(int prog, int ver)
+{
+	uint32_t data[16];
+
+	data[0] = 0; data[1] = 0;	/* auth credential */
+	data[2] = 0; data[3] = 0;	/* auth verifier */
+	data[4] = htonl(prog);
+	data[5] = htonl(ver);
+	data[6] = htonl(17);	/* IP_UDP */
+	data[7] = 0;
+
+	rpc_req(PROG_PORTMAP, PORTMAP_GETPORT, data, 8);
+}
+
+/**************************************************************************
+NFS_MOUNT - Mount an NFS Filesystem
+**************************************************************************/
+static void
+nfs_mount_req(char *path)
+{
+	uint32_t data[1024];
+	uint32_t *p;
+	int len;
+	int pathlen;
+
+	pathlen = strlen(path);
+
+	p = &(data[0]);
+	p = (uint32_t *)rpc_add_credentials((long *)p);
+
+	*p++ = htonl(pathlen);
+	if (pathlen & 3)
+		*(p + pathlen / 4) = 0;
+	memcpy(p, path, pathlen);
+	p += (pathlen + 3) / 4;
+
+	len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+	rpc_req(PROG_MOUNT, MOUNT_ADDENTRY, data, len);
+}
+
+/**************************************************************************
+NFS_UMOUNTALL - Unmount all our NFS Filesystems on the Server
+**************************************************************************/
+static void
+nfs_umountall_req(void)
+{
+	uint32_t data[1024];
+	uint32_t *p;
+	int len;
+
+	if ((NfsSrvMountPort == -1) || (!fs_mounted))
+		/* Nothing mounted, nothing to umount */
+		return;
+
+	p = &(data[0]);
+	p = (uint32_t *)rpc_add_credentials((long *)p);
+
+	len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+	rpc_req(PROG_MOUNT, MOUNT_UMOUNTALL, data, len);
+}
+
+/***************************************************************************
+ * NFS_READLINK (AH 2003-07-14)
+ * This procedure is called when read of the first block fails -
+ * this probably happens when it's a directory or a symlink
+ * In case of successful readlink(), the dirname is manipulated,
+ * so that inside the nfs() function a recursion can be done.
+ **************************************************************************/
+static void
+nfs_readlink_req(void)
+{
+	uint32_t data[1024];
+	uint32_t *p;
+	int len;
+
+	p = &(data[0]);
+	p = (uint32_t *)rpc_add_credentials((long *)p);
+
+	memcpy(p, filefh, NFS_FHSIZE);
+	p += (NFS_FHSIZE / 4);
+
+	len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+	rpc_req(PROG_NFS, NFS_READLINK, data, len);
+}
+
+/**************************************************************************
+NFS_LOOKUP - Lookup Pathname
+**************************************************************************/
+static void
+nfs_lookup_req(char *fname)
+{
+	uint32_t data[1024];
+	uint32_t *p;
+	int len;
+	int fnamelen;
+
+	fnamelen = strlen(fname);
+
+	p = &(data[0]);
+	p = (uint32_t *)rpc_add_credentials((long *)p);
+
+	memcpy(p, dirfh, NFS_FHSIZE);
+	p += (NFS_FHSIZE / 4);
+	*p++ = htonl(fnamelen);
+	if (fnamelen & 3)
+		*(p + fnamelen / 4) = 0;
+	memcpy(p, fname, fnamelen);
+	p += (fnamelen + 3) / 4;
+
+	len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+	rpc_req(PROG_NFS, NFS_LOOKUP, data, len);
+}
+
+/**************************************************************************
+NFS_READ - Read File on NFS Server
+**************************************************************************/
+static void
+nfs_read_req(int offset, int readlen)
+{
+	uint32_t data[1024];
+	uint32_t *p;
+	int len;
+
+	p = &(data[0]);
+	p = (uint32_t *)rpc_add_credentials((long *)p);
+
+	memcpy(p, filefh, NFS_FHSIZE);
+	p += (NFS_FHSIZE / 4);
+	*p++ = htonl(offset);
+	*p++ = htonl(readlen);
+	*p++ = 0;
+
+	len = (uint32_t *)p - (uint32_t *)&(data[0]);
+
+	rpc_req(PROG_NFS, NFS_READ, data, len);
+}
+
+/**************************************************************************
+RPC request dispatcher
+**************************************************************************/
+
+static void
+NfsSend(void)
+{
+	debug("%s\n", __func__);
+
+	switch (NfsState) {
+	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
+		rpc_lookup_req(PROG_MOUNT, 1);
+		break;
+	case STATE_PRCLOOKUP_PROG_NFS_REQ:
+		rpc_lookup_req(PROG_NFS, 2);
+		break;
+	case STATE_MOUNT_REQ:
+		nfs_mount_req(nfs_path);
+		break;
+	case STATE_UMOUNT_REQ:
+		nfs_umountall_req();
+		break;
+	case STATE_LOOKUP_REQ:
+		nfs_lookup_req(nfs_filename);
+		break;
+	case STATE_READ_REQ:
+		nfs_read_req(nfs_offset, nfs_len);
+		break;
+	case STATE_READLINK_REQ:
+		nfs_readlink_req();
+		break;
+	}
+}
+
+/**************************************************************************
+Handlers for the reply from server
+**************************************************************************/
+
+static int
+rpc_lookup_reply(int prog, uchar *pkt, unsigned len)
+{
+	struct rpc_t rpc_pkt;
+
+	memcpy((unsigned char *)&rpc_pkt, pkt, len);
+
+	debug("%s\n", __func__);
+
+	if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
+		return -NFS_RPC_ERR;
+	else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
+		return -NFS_RPC_DROP;
+
+	if (rpc_pkt.u.reply.rstatus  ||
+	    rpc_pkt.u.reply.verifier ||
+	    rpc_pkt.u.reply.astatus)
+		return -1;
+
+	switch (prog) {
+	case PROG_MOUNT:
+		NfsSrvMountPort = ntohl(rpc_pkt.u.reply.data[0]);
+		break;
+	case PROG_NFS:
+		NfsSrvNfsPort = ntohl(rpc_pkt.u.reply.data[0]);
+		break;
+	}
+
+	return 0;
+}
+
+static int
+nfs_mount_reply(uchar *pkt, unsigned len)
+{
+	struct rpc_t rpc_pkt;
+
+	debug("%s\n", __func__);
+
+	memcpy((unsigned char *)&rpc_pkt, pkt, len);
+
+	if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
+		return -NFS_RPC_ERR;
+	else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
+		return -NFS_RPC_DROP;
+
+	if (rpc_pkt.u.reply.rstatus  ||
+	    rpc_pkt.u.reply.verifier ||
+	    rpc_pkt.u.reply.astatus  ||
+	    rpc_pkt.u.reply.data[0])
+		return -1;
+
+	fs_mounted = 1;
+	memcpy(dirfh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
+
+	return 0;
+}
+
+static int
+nfs_umountall_reply(uchar *pkt, unsigned len)
+{
+	struct rpc_t rpc_pkt;
+
+	debug("%s\n", __func__);
+
+	memcpy((unsigned char *)&rpc_pkt, pkt, len);
+
+	if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
+		return -NFS_RPC_ERR;
+	else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
+		return -NFS_RPC_DROP;
+
+	if (rpc_pkt.u.reply.rstatus  ||
+	    rpc_pkt.u.reply.verifier ||
+	    rpc_pkt.u.reply.astatus)
+		return -1;
+
+	fs_mounted = 0;
+	memset(dirfh, 0, sizeof(dirfh));
+
+	return 0;
+}
+
+static int
+nfs_lookup_reply(uchar *pkt, unsigned len)
+{
+	struct rpc_t rpc_pkt;
+
+	debug("%s\n", __func__);
+
+	memcpy((unsigned char *)&rpc_pkt, pkt, len);
+
+	if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
+		return -NFS_RPC_ERR;
+	else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
+		return -NFS_RPC_DROP;
+
+	if (rpc_pkt.u.reply.rstatus  ||
+	    rpc_pkt.u.reply.verifier ||
+	    rpc_pkt.u.reply.astatus  ||
+	    rpc_pkt.u.reply.data[0])
+		return -1;
+
+	memcpy(filefh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
+
+	return 0;
+}
+
+static int
+nfs_readlink_reply(uchar *pkt, unsigned len)
+{
+	struct rpc_t rpc_pkt;
+	int rlen;
+
+	debug("%s\n", __func__);
+
+	memcpy((unsigned char *)&rpc_pkt, pkt, len);
+
+	if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
+		return -NFS_RPC_ERR;
+	else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
+		return -NFS_RPC_DROP;
+
+	if (rpc_pkt.u.reply.rstatus  ||
+	    rpc_pkt.u.reply.verifier ||
+	    rpc_pkt.u.reply.astatus  ||
+	    rpc_pkt.u.reply.data[0])
+		return -1;
+
+	rlen = ntohl(rpc_pkt.u.reply.data[1]); /* new path length */
+
+	if (*((char *)&(rpc_pkt.u.reply.data[2])) != '/') {
+		int pathlen;
+		strcat(nfs_path, "/");
+		pathlen = strlen(nfs_path);
+		memcpy(nfs_path + pathlen, (uchar *)&(rpc_pkt.u.reply.data[2]),
+			rlen);
+		nfs_path[pathlen + rlen] = 0;
+	} else {
+		memcpy(nfs_path, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
+		nfs_path[rlen] = 0;
+	}
+	return 0;
+}
+
+static int
+nfs_read_reply(uchar *pkt, unsigned len)
+{
+	struct rpc_t rpc_pkt;
+	int rlen;
+
+	debug("%s\n", __func__);
+
+	memcpy((uchar *)&rpc_pkt, pkt, sizeof(rpc_pkt.u.reply));
+
+	if (ntohl(rpc_pkt.u.reply.id) > rpc_id)
+		return -NFS_RPC_ERR;
+	else if (ntohl(rpc_pkt.u.reply.id) < rpc_id)
+		return -NFS_RPC_DROP;
+
+	if (rpc_pkt.u.reply.rstatus  ||
+	    rpc_pkt.u.reply.verifier ||
+	    rpc_pkt.u.reply.astatus  ||
+	    rpc_pkt.u.reply.data[0]) {
+		if (rpc_pkt.u.reply.rstatus)
+			return -9999;
+		if (rpc_pkt.u.reply.astatus)
+			return -9999;
+		return -ntohl(rpc_pkt.u.reply.data[0]);
+	}
+
+	if ((nfs_offset != 0) && !((nfs_offset) %
+			(NFS_READ_SIZE / 2 * 10 * HASHES_PER_LINE)))
+		puts("\n\t ");
+	if (!(nfs_offset % ((NFS_READ_SIZE / 2) * 10)))
+		putc('#');
+
+	rlen = ntohl(rpc_pkt.u.reply.data[18]);
+	if (store_block((uchar *)pkt + sizeof(rpc_pkt.u.reply),
+			nfs_offset, rlen))
+		return -9999;
+
+	return rlen;
+}
+
+/**************************************************************************
+Interfaces of U-BOOT
+**************************************************************************/
+
+static void
+NfsTimeout(void)
+{
+	if (++NfsTimeoutCount > NFS_RETRY_COUNT) {
+		puts("\nRetry count exceeded; starting again\n");
+		NetStartAgain();
+	} else {
+		puts("T ");
+		NetSetTimeout(nfs_timeout + NFS_TIMEOUT * NfsTimeoutCount,
+			      NfsTimeout);
+		NfsSend();
+	}
+}
+
+static void
+NfsHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, unsigned len)
+{
+	int rlen;
+	int reply;
+
+	debug("%s\n", __func__);
+
+	if (dest != NfsOurPort)
+		return;
+
+	switch (NfsState) {
+	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
+		if (rpc_lookup_reply(PROG_MOUNT, pkt, len) == -NFS_RPC_DROP)
+			break;
+		NfsState = STATE_PRCLOOKUP_PROG_NFS_REQ;
+		NfsSend();
+		break;
+
+	case STATE_PRCLOOKUP_PROG_NFS_REQ:
+		if (rpc_lookup_reply(PROG_NFS, pkt, len) == -NFS_RPC_DROP)
+			break;
+		NfsState = STATE_MOUNT_REQ;
+		NfsSend();
+		break;
+
+	case STATE_MOUNT_REQ:
+		reply = nfs_mount_reply(pkt, len);
+		if (reply == -NFS_RPC_DROP)
+			break;
+		else if (reply == -NFS_RPC_ERR) {
+			puts("*** ERROR: Cannot mount\n");
+			/* just to be sure... */
+			NfsState = STATE_UMOUNT_REQ;
+			NfsSend();
+		} else {
+			NfsState = STATE_LOOKUP_REQ;
+			NfsSend();
+		}
+		break;
+
+	case STATE_UMOUNT_REQ:
+		reply = nfs_umountall_reply(pkt, len);
+		if (reply == -NFS_RPC_DROP)
+			break;
+		else if (reply == -NFS_RPC_ERR) {
+			puts("*** ERROR: Cannot umount\n");
+			net_set_state(NETLOOP_FAIL);
+		} else {
+			puts("\ndone\n");
+			net_set_state(nfs_download_state);
+		}
+		break;
+
+	case STATE_LOOKUP_REQ:
+		reply = nfs_lookup_reply(pkt, len);
+		if (reply == -NFS_RPC_DROP)
+			break;
+		else if (reply == -NFS_RPC_ERR) {
+			puts("*** ERROR: File lookup fail\n");
+			NfsState = STATE_UMOUNT_REQ;
+			NfsSend();
+		} else {
+			NfsState = STATE_READ_REQ;
+			nfs_offset = 0;
+			nfs_len = NFS_READ_SIZE;
+			NfsSend();
+		}
+		break;
+
+	case STATE_READLINK_REQ:
+		reply = nfs_readlink_reply(pkt, len);
+		if (reply == -NFS_RPC_DROP)
+			break;
+		else if (reply == -NFS_RPC_ERR) {
+			puts("*** ERROR: Symlink fail\n");
+			NfsState = STATE_UMOUNT_REQ;
+			NfsSend();
+		} else {
+			debug("Symlink --> %s\n", nfs_path);
+			nfs_filename = basename(nfs_path);
+			nfs_path     = dirname(nfs_path);
+
+			NfsState = STATE_MOUNT_REQ;
+			NfsSend();
+		}
+		break;
+
+	case STATE_READ_REQ:
+		rlen = nfs_read_reply(pkt, len);
+		NetSetTimeout(nfs_timeout, NfsTimeout);
+		if (rlen > 0) {
+			nfs_offset += rlen;
+			NfsSend();
+		} else if ((rlen == -NFSERR_ISDIR) || (rlen == -NFSERR_INVAL)) {
+			/* symbolic link */
+			NfsState = STATE_READLINK_REQ;
+			NfsSend();
+		} else {
+			if (!rlen)
+				nfs_download_state = NETLOOP_SUCCESS;
+			NfsState = STATE_UMOUNT_REQ;
+			NfsSend();
+		}
+		break;
+	}
+}
+
+
+void
+NfsStart(void)
+{
+	debug("%s\n", __func__);
+	nfs_download_state = NETLOOP_FAIL;
+
+	NfsServerIP = NetServerIP;
+	nfs_path = (char *)nfs_path_buff;
+
+	if (nfs_path == NULL) {
+		net_set_state(NETLOOP_FAIL);
+		puts("*** ERROR: Fail allocate memory\n");
+		return;
+	}
+
+	if (BootFile[0] == '\0') {
+		sprintf(default_filename, "/nfsroot/%02X%02X%02X%02X.img",
+			NetOurIP & 0xFF,
+			(NetOurIP >>  8) & 0xFF,
+			(NetOurIP >> 16) & 0xFF,
+			(NetOurIP >> 24) & 0xFF);
+		strcpy(nfs_path, default_filename);
+
+		printf("*** Warning: no boot file name; using '%s'\n",
+			nfs_path);
+	} else {
+		char *p = BootFile;
+
+		p = strchr(p, ':');
+
+		if (p != NULL) {
+			NfsServerIP = string_to_ip(BootFile);
+			++p;
+			strcpy(nfs_path, p);
+		} else {
+			strcpy(nfs_path, BootFile);
+		}
+	}
+
+	nfs_filename = basename(nfs_path);
+	nfs_path     = dirname(nfs_path);
+
+	printf("Using %s device\n", eth_get_name());
+
+	printf("File transfer via NFS from server %pI4"
+		"; our IP address is %pI4", &NfsServerIP, &NetOurIP);
+
+	/* Check if we need to send across this subnet */
+	if (NetOurGatewayIP && NetOurSubnetMask) {
+		IPaddr_t OurNet	    = NetOurIP	  & NetOurSubnetMask;
+		IPaddr_t ServerNet  = NetServerIP & NetOurSubnetMask;
+
+		if (OurNet != ServerNet)
+			printf("; sending through gateway %pI4",
+				&NetOurGatewayIP);
+	}
+	printf("\nFilename '%s/%s'.", nfs_path, nfs_filename);
+
+	if (NetBootFileSize) {
+		printf(" Size is 0x%x Bytes = ", NetBootFileSize<<9);
+		print_size(NetBootFileSize<<9, "");
+	}
+	printf("\nLoad address: 0x%lx\n"
+		"Loading: *\b", load_addr);
+
+	NetSetTimeout(nfs_timeout, NfsTimeout);
+	net_set_udp_handler(NfsHandler);
+
+	NfsTimeoutCount = 0;
+	NfsState = STATE_PRCLOOKUP_PROG_MOUNT_REQ;
+
+	/*NfsOurPort = 4096 + (get_ticks() % 3072);*/
+	/*FIX ME !!!*/
+	NfsOurPort = 1000;
+
+	/* zero out server ether in case the server ip has changed */
+	memset(NetServerEther, 0, 6);
+
+	NfsSend();
+}