[J-u-boot.git] / net / nfs.c

/*
 * 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
#define NFS_TIMEOUT 2000UL

static int fs_mounted = 0;
static unsigned long rpc_id = 0;
static int nfs_offset = -1;
static int nfs_len;

static char dirfh[NFS_FHSIZE];	/* file handle of directory */
static char filefh[NFS_FHSIZE]; /* file handle of kernel image */

static int	NfsDownloadState;
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_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 -1;

	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 -1;

	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 -1;

	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 -1;

	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 -1;

	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 -1;

	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, NfsTimeout);
		NfsSend ();
	}
}

static void
NfsHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
{
	int rlen;

	debug("%s\n", __func__);

	if (dest != NfsOurPort) return;

	switch (NfsState) {
	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
		rpc_lookup_reply (PROG_MOUNT, pkt, len);
		NfsState = STATE_PRCLOOKUP_PROG_NFS_REQ;
		NfsSend ();
		break;

	case STATE_PRCLOOKUP_PROG_NFS_REQ:
		rpc_lookup_reply (PROG_NFS, pkt, len);
		NfsState = STATE_MOUNT_REQ;
		NfsSend ();
		break;

	case STATE_MOUNT_REQ:
		if (nfs_mount_reply(pkt, len)) {
			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:
		if (nfs_umountall_reply(pkt, len)) {
			puts ("*** ERROR: Cannot umount\n");
			NetState = NETLOOP_FAIL;
		} else {
			puts ("\ndone\n");
			NetState = NfsDownloadState;
		}
		break;

	case STATE_LOOKUP_REQ:
		if (nfs_lookup_reply(pkt, len)) {
			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:
		if (nfs_readlink_reply(pkt, len)) {
			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 ) NfsDownloadState = NETLOOP_SUCCESS;
			NfsState = STATE_UMOUNT_REQ;
			NfsSend ();
		}
		break;
	}
}


void
NfsStart (void)
{
	debug("%s\n", __func__);
	NfsDownloadState = NETLOOP_FAIL;

	NfsServerIP = NetServerIP;
	nfs_path = (char *)nfs_path_buff;

	if (nfs_path == NULL) {
		NetState = NETLOOP_FAIL;
		puts ("*** ERROR: Fail allocate memory\n");
		return;
	}

	if (BootFile[0] == '\0') {
		sprintf (default_filename, "/nfsroot/%02lX%02lX%02lX%02lX.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);

#if defined(CONFIG_NET_MULTI)
	printf ("Using %s device\n", eth_get_name());
#endif

	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);
	NetSetHandler (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 ();
}
Commit	Line	Data
cbd8a35c WD	1	/*
	2	* NFS support driver - based on etherboot and U-BOOT's tftp.c
	3	*
	4	* Masami Komiya <mkomiya@sonare.it> 2004
	5	*
	6	*/
	7
	8	/* NOTE: the NFS code is heavily inspired by the NetBSD netboot code (read:
	9	* large portions are copied verbatim) as distributed in OSKit 0.97. A few
	10	* changes were necessary to adapt the code to Etherboot and to fix several
	11	* inconsistencies. Also the RPC message preparation is done "by hand" to
	12	* avoid adding netsprintf() which I find hard to understand and use. */
	13
	14	/* NOTE 2: Etherboot does not care about things beyond the kernel image, so
	15	* it loads the kernel image off the boot server (ARP_SERVER) and does not
	16	* access the client root disk (root-path in dhcpd.conf), which would use
	17	* ARP_ROOTSERVER. The root disk is something the operating system we are
	18	* about to load needs to use. This is different from the OSKit 0.97 logic. */
	19
	20	/* NOTE 3: Symlink handling introduced by Anselm M Hoffmeister, 2003-July-14
	21	* If a symlink is encountered, it is followed as far as possible (recursion
	22	* possible, maximum 16 steps). There is no clearing of ".."'s inside the
	23	* path, so please DON'T DO THAT. thx. */
	24
	25	#include <common.h>
	26	#include <command.h>
	27	#include <net.h>
	28	#include <malloc.h>
	29	#include "nfs.h"
	30	#include "bootp.h"
	31
cbd8a35c	32	#define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */
fe891ecf	33	#define NFS_RETRY_COUNT 30
49f3bdbb	34	#define NFS_TIMEOUT 2000UL
cbd8a35c WD	35
cbd8a35c WD	36	static int fs_mounted = 0;
c3f9d493	37	static unsigned long rpc_id = 0;
cbd8a35c WD	38	static int nfs_offset = -1;
	39	static int nfs_len;
	40
	41	static char dirfh[NFS_FHSIZE]; /* file handle of directory */
	42	static char filefh[NFS_FHSIZE]; /* file handle of kernel image */
	43
23a7a32d	44	static int NfsDownloadState;
cbd8a35c WD	45	static IPaddr_t NfsServerIP;
	46	static int NfsSrvMountPort;
	47	static int NfsSrvNfsPort;
	48	static int NfsOurPort;
	49	static int NfsTimeoutCount;
	50	static int NfsState;
	51	#define STATE_PRCLOOKUP_PROG_MOUNT_REQ 1
	52	#define STATE_PRCLOOKUP_PROG_NFS_REQ 2
	53	#define STATE_MOUNT_REQ 3
	54	#define STATE_UMOUNT_REQ 4
	55	#define STATE_LOOKUP_REQ 5
	56	#define STATE_READ_REQ 6
	57	#define STATE_READLINK_REQ 7
	58
	59	static char default_filename[64];
	60	static char *nfs_filename;
	61	static char *nfs_path;
	62	static char nfs_path_buff[2048];
	63
23a7a32d	64	static __inline__ int
cbd8a35c WD	65	store_block (uchar * src, unsigned offset, unsigned len)
cbd8a35c WD	66	{
a084f7da	67	ulong newsize = offset + len;
6d0f6bcf	68	#ifdef CONFIG_SYS_DIRECT_FLASH_NFS
cbd8a35c WD	69	int i, rc = 0;
cbd8a35c WD	70
6d0f6bcf	71	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; i++) {
cbd8a35c WD	72	/* start address in flash? */
	73	if (load_addr + offset >= flash_info[i].start[0]) {
	74	rc = 1;
	75	break;
	76	}
	77	}
	78
	79	if (rc) { /* Flash is destination for this packet */
	80	rc = flash_write ((uchar *)src, (ulong)(load_addr+offset), len);
	81	if (rc) {
	82	flash_perror (rc);
23a7a32d	83	return -1;
cbd8a35c WD	84	}
cbd8a35c WD	85	} else
6d0f6bcf	86	#endif /* CONFIG_SYS_DIRECT_FLASH_NFS */
cbd8a35c WD	87	{
	88	(void)memcpy ((void *)(load_addr + offset), src, len);
	89	}
a084f7da WD	90
	91	if (NetBootFileXferSize < (offset+len))
	92	NetBootFileXferSize = newsize;
23a7a32d	93	return 0;
cbd8a35c WD	94	}
	95
	96	static char*
	97	basename (char *path)
	98	{
	99	char *fname;
	100
	101	fname = path + strlen(path) - 1;
	102	while (fname >= path) {
	103	if (*fname == '/') {
	104	fname++;
	105	break;
	106	}
	107	fname--;
	108	}
	109	return fname;
	110	}
	111
	112	static char*
	113	dirname (char *path)
	114	{
	115	char *fname;
	116
	117	fname = basename (path);
	118	--fname;
	119	*fname = '\0';
	120	return path;
	121	}
	122
cbd8a35c WD	123	/**************************************************************************
	124	RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
	125	**************************************************************************/
	126	static long rpc_add_credentials (long p)
	127	{
	128	int hl;
	129	int hostnamelen;
	130	char hostname[256];
	131
	132	strcpy (hostname, "");
	133	hostnamelen=strlen (hostname);
	134
	135	/* Here's the executive summary on authentication requirements of the
	136	* various NFS server implementations: Linux accepts both AUTH_NONE
	137	* and AUTH_UNIX authentication (also accepts an empty hostname field
	138	* in the AUTH_UNIX scheme). *BSD refuses AUTH_NONE, but accepts
	139	* AUTH_UNIX (also accepts an empty hostname field in the AUTH_UNIX
	140	* scheme). To be safe, use AUTH_UNIX and pass the hostname if we have
	141	* it (if the BOOTP/DHCP reply didn't give one, just use an empty
	142	* hostname). */
	143
	144	hl = (hostnamelen + 3) & ~3;
	145
	146	/* Provide an AUTH_UNIX credential. */
	147	p++ = htonl(1); / AUTH_UNIX */
	148	p++ = htonl(hl+20); / auth length */
	149	p++ = htonl(0); / stamp */
	150	p++ = htonl(hostnamelen); / hostname string */
	151	if (hostnamelen & 3) {
	152	(p + hostnamelen / 4) = 0; / add zero padding */
	153	}
	154	memcpy (p, hostname, hostnamelen);
	155	p += hl / 4;
	156	p++ = 0; / uid */
	157	p++ = 0; / gid */
	158	p++ = 0; / auxiliary gid list */
	159
	160	/* Provide an AUTH_NONE verifier. */
	161	p++ = 0; / AUTH_NONE */
	162	p++ = 0; / auth length */
	163
	164	return p;
	165	}
	166
	167	/**************************************************************************
	168	RPC_LOOKUP - Lookup RPC Port numbers
	169	**************************************************************************/
	170	static void
	171	rpc_req (int rpc_prog, int rpc_proc, uint32_t *data, int datalen)
	172	{
	173	struct rpc_t pkt;
	174	unsigned long id;
	175	uint32_t *p;
	176	int pktlen;
	177	int sport;
	178
c3f9d493	179	id = ++rpc_id;
cbd8a35c WD	180	pkt.u.call.id = htonl(id);
	181	pkt.u.call.type = htonl(MSG_CALL);
	182	pkt.u.call.rpcvers = htonl(2); /* use RPC version 2 */
	183	pkt.u.call.prog = htonl(rpc_prog);
	184	pkt.u.call.vers = htonl(2); /* portmapper is version 2 */
	185	pkt.u.call.proc = htonl(rpc_proc);
	186	p = (uint32_t *)&(pkt.u.call.data);
	187
	188	if (datalen)
	189	memcpy ((char )p, (char )data, datalen*sizeof(uint32_t));
	190
	191	pktlen = (char )p + datalensizeof(uint32_t) - (char *)&pkt;
	192
a3d991bd	193	memcpy ((char )NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE, (char )&pkt, pktlen);
cbd8a35c WD	194
	195	if (rpc_prog == PROG_PORTMAP)
	196	sport = SUNRPC_PORT;
	197	else if (rpc_prog == PROG_MOUNT)
	198	sport = NfsSrvMountPort;
	199	else
	200	sport = NfsSrvNfsPort;
	201
	202	NetSendUDPPacket (NetServerEther, NfsServerIP, sport, NfsOurPort, pktlen);
	203	}
	204
	205	/**************************************************************************
	206	RPC_LOOKUP - Lookup RPC Port numbers
	207	**************************************************************************/
	208	static void
	209	rpc_lookup_req (int prog, int ver)
	210	{
	211	uint32_t data[16];
	212
	213	data[0] = 0; data[1] = 0; /* auth credential */
	214	data[2] = 0; data[3] = 0; /* auth verifier */
	215	data[4] = htonl(prog);
	216	data[5] = htonl(ver);
	217	data[6] = htonl(17); /* IP_UDP */
	218	data[7] = 0;
	219
	220	rpc_req (PROG_PORTMAP, PORTMAP_GETPORT, data, 8);
	221	}
	222
	223	/**************************************************************************
	224	NFS_MOUNT - Mount an NFS Filesystem
	225	**************************************************************************/
	226	static void
	227	nfs_mount_req (char *path)
	228	{
	229	uint32_t data[1024];
	230	uint32_t *p;
	231	int len;
	232	int pathlen;
	233
	234	pathlen = strlen (path);
	235
	236	p = &(data[0]);
	237	p = (uint32_t )rpc_add_credentials((long )p);
	238
	239	*p++ = htonl(pathlen);
	240	if (pathlen & 3) *(p + pathlen / 4) = 0;
	241	memcpy (p, path, pathlen);
	242	p += (pathlen + 3) / 4;
	243
	244	len = (uint32_t )p - (uint32_t )&(data[0]);
	245
	246	rpc_req (PROG_MOUNT, MOUNT_ADDENTRY, data, len);
	247	}
	248
	249	/**************************************************************************
	250	NFS_UMOUNTALL - Unmount all our NFS Filesystems on the Server
	251	**************************************************************************/
	252	static void
	253	nfs_umountall_req (void)
	254	{
	255	uint32_t data[1024];
	256	uint32_t *p;
	257	int len;
258
259	if ((NfsSrvMountPort == -1) \|\| (!fs_mounted)) {
260	/* Nothing mounted, nothing to umount */
261	return;
262	}
263
264	p = &(data[0]);
265	p = (uint32_t )rpc_add_credentials ((long )p);
266
267	len = (uint32_t )p - (uint32_t )&(data[0]);
268
269	rpc_req (PROG_MOUNT, MOUNT_UMOUNTALL, data, len);
270	}
271
272	/***************************************************************************
273	* NFS_READLINK (AH 2003-07-14)
274	* This procedure is called when read of the first block fails -
275	* this probably happens when it's a directory or a symlink
276	* In case of successful readlink(), the dirname is manipulated,
277	* so that inside the nfs() function a recursion can be done.
278	**************************************************************************/
279	static void
280	nfs_readlink_req (void)
281	{
282	uint32_t data[1024];
283	uint32_t *p;
284	int len;
285
286	p = &(data[0]);
287	p = (uint32_t )rpc_add_credentials ((long )p);
288
289	memcpy (p, filefh, NFS_FHSIZE);
290	p += (NFS_FHSIZE / 4);
291
292	len = (uint32_t )p - (uint32_t )&(data[0]);
293
294	rpc_req (PROG_NFS, NFS_READLINK, data, len);
295	}
296
297	/**************************************************************************
298	NFS_LOOKUP - Lookup Pathname
299	**************************************************************************/
300	static void
301	nfs_lookup_req (char *fname)
302	{
303	uint32_t data[1024];
304	uint32_t *p;
305	int len;
306	int fnamelen;
307
308	fnamelen = strlen (fname);
309
310	p = &(data[0]);
311	p = (uint32_t )rpc_add_credentials ((long )p);
312
313	memcpy (p, dirfh, NFS_FHSIZE);
314	p += (NFS_FHSIZE / 4);
315	*p++ = htonl(fnamelen);
316	if (fnamelen & 3) *(p + fnamelen / 4) = 0;
317	memcpy (p, fname, fnamelen);
318	p += (fnamelen + 3) / 4;
319
320	len = (uint32_t )p - (uint32_t )&(data[0]);
321
322	rpc_req (PROG_NFS, NFS_LOOKUP, data, len);
323	}
324
325	/**************************************************************************
326	NFS_READ - Read File on NFS Server
327	**************************************************************************/
328	static void
329	nfs_read_req (int offset, int readlen)
330	{
331	uint32_t data[1024];
332	uint32_t *p;
333	int len;
334
335	p = &(data[0]);
336	p = (uint32_t )rpc_add_credentials ((long )p);
337
338	memcpy (p, filefh, NFS_FHSIZE);
339	p += (NFS_FHSIZE / 4);
340	*p++ = htonl(offset);
341	*p++ = htonl(readlen);
342	*p++ = 0;
343
344	len = (uint32_t )p - (uint32_t )&(data[0]);
345
346	rpc_req (PROG_NFS, NFS_READ, data, len);
347	}
348
349	/**************************************************************************
350	RPC request dispatcher
351	**************************************************************************/
352
353	static void
354	NfsSend (void)
355	{
0ebf04c6	356	debug("%s\n", __func__);
cbd8a35c WD	357
	358	switch (NfsState) {
	359	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
	360	rpc_lookup_req (PROG_MOUNT, 1);
	361	break;
	362	case STATE_PRCLOOKUP_PROG_NFS_REQ:
	363	rpc_lookup_req (PROG_NFS, 2);
	364	break;
	365	case STATE_MOUNT_REQ:
	366	nfs_mount_req (nfs_path);
	367	break;
	368	case STATE_UMOUNT_REQ:
	369	nfs_umountall_req ();
	370	break;
	371	case STATE_LOOKUP_REQ:
	372	nfs_lookup_req (nfs_filename);
	373	break;
	374	case STATE_READ_REQ:
	375	nfs_read_req (nfs_offset, nfs_len);
	376	break;
	377	case STATE_READLINK_REQ:
	378	nfs_readlink_req ();
	379	break;
	380	}
	381	}
	382
	383	/**************************************************************************
	384	Handlers for the reply from server
	385	**************************************************************************/
	386
	387	static int
	388	rpc_lookup_reply (int prog, uchar *pkt, unsigned len)
	389	{
	390	struct rpc_t rpc_pkt;
	391
	392	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	393
0ebf04c6	394	debug("%s\n", __func__);
cbd8a35c	395
c3f9d493 WD	396	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	397	return -1;
	398
cbd8a35c WD	399	if (rpc_pkt.u.reply.rstatus \|\|
cbd8a35c WD	400	rpc_pkt.u.reply.verifier \|\|
cbd8a35c	401	rpc_pkt.u.reply.astatus) {
c3f9d493	402	return -1;
cbd8a35c WD	403	}
	404
	405	switch (prog) {
	406	case PROG_MOUNT:
	407	NfsSrvMountPort = ntohl(rpc_pkt.u.reply.data[0]);
	408	break;
	409	case PROG_NFS:
	410	NfsSrvNfsPort = ntohl(rpc_pkt.u.reply.data[0]);
	411	break;
	412	}
	413
	414	return 0;
	415	}
	416
	417	static int
	418	nfs_mount_reply (uchar *pkt, unsigned len)
	419	{
	420	struct rpc_t rpc_pkt;
	421
0ebf04c6	422	debug("%s\n", __func__);
cbd8a35c WD	423
	424	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	425
c3f9d493 WD	426	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	427	return -1;
	428
cbd8a35c WD	429	if (rpc_pkt.u.reply.rstatus \|\|
	430	rpc_pkt.u.reply.verifier \|\|
	431	rpc_pkt.u.reply.astatus \|\|
	432	rpc_pkt.u.reply.data[0]) {
	433	return -1;
	434	}
	435
	436	fs_mounted = 1;
	437	memcpy (dirfh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
	438
	439	return 0;
	440	}
	441
	442	static int
	443	nfs_umountall_reply (uchar *pkt, unsigned len)
	444	{
	445	struct rpc_t rpc_pkt;
	446
0ebf04c6	447	debug("%s\n", __func__);
cbd8a35c WD	448
	449	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	450
c3f9d493 WD	451	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	452	return -1;
	453
cbd8a35c WD	454	if (rpc_pkt.u.reply.rstatus \|\|
	455	rpc_pkt.u.reply.verifier \|\|
	456	rpc_pkt.u.reply.astatus) {
	457	return -1;
	458	}
	459
	460	fs_mounted = 0;
	461	memset (dirfh, 0, sizeof(dirfh));
	462
	463	return 0;
	464	}
	465
	466	static int
	467	nfs_lookup_reply (uchar *pkt, unsigned len)
	468	{
	469	struct rpc_t rpc_pkt;
	470
0ebf04c6	471	debug("%s\n", __func__);
cbd8a35c WD	472
	473	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	474
c3f9d493 WD	475	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	476	return -1;
	477
cbd8a35c WD	478	if (rpc_pkt.u.reply.rstatus \|\|
	479	rpc_pkt.u.reply.verifier \|\|
	480	rpc_pkt.u.reply.astatus \|\|
	481	rpc_pkt.u.reply.data[0]) {
	482	return -1;
	483	}
	484
	485	memcpy (filefh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
	486
	487	return 0;
	488	}
	489
	490	static int
	491	nfs_readlink_reply (uchar *pkt, unsigned len)
	492	{
	493	struct rpc_t rpc_pkt;
	494	int rlen;
	495
0ebf04c6	496	debug("%s\n", __func__);
cbd8a35c WD	497
	498	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	499
c3f9d493 WD	500	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	501	return -1;
	502
cbd8a35c WD	503	if (rpc_pkt.u.reply.rstatus \|\|
	504	rpc_pkt.u.reply.verifier \|\|
	505	rpc_pkt.u.reply.astatus \|\|
	506	rpc_pkt.u.reply.data[0]) {
	507	return -1;
	508	}
	509
	510	rlen = ntohl (rpc_pkt.u.reply.data[1]); /* new path length */
	511
	512	if (((char )&(rpc_pkt.u.reply.data[2])) != '/') {
	513	int pathlen;
	514	strcat (nfs_path, "/");
	515	pathlen = strlen(nfs_path);
	516	memcpy (nfs_path+pathlen, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
f64ef9bb	517	nfs_path[pathlen + rlen] = 0;
cbd8a35c WD	518	} else {
	519	memcpy (nfs_path, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
	520	nfs_path[rlen] = 0;
	521	}
	522	return 0;
	523	}
	524
	525	static int
	526	nfs_read_reply (uchar *pkt, unsigned len)
	527	{
	528	struct rpc_t rpc_pkt;
	529	int rlen;
	530
0ebf04c6	531	debug("%s\n", __func__);
cbd8a35c	532
11dadd54	533	memcpy ((uchar *)&rpc_pkt, pkt, sizeof(rpc_pkt.u.reply));
cbd8a35c	534
c3f9d493 WD	535	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	536	return -1;
	537
cbd8a35c WD	538	if (rpc_pkt.u.reply.rstatus \|\|
	539	rpc_pkt.u.reply.verifier \|\|
	540	rpc_pkt.u.reply.astatus \|\|
	541	rpc_pkt.u.reply.data[0]) {
	542	if (rpc_pkt.u.reply.rstatus) {
	543	return -9999;
	544	}
	545	if (rpc_pkt.u.reply.astatus) {
	546	return -9999;
	547	}
	548	return -ntohl(rpc_pkt.u.reply.data[0]);;
	549	}
	550
	551	if ((nfs_offset!=0) && !((nfs_offset) % (NFS_READ_SIZE/210HASHES_PER_LINE))) {
	552	puts ("\n\t ");
	553	}
	554	if (!(nfs_offset % ((NFS_READ_SIZE/2)*10))) {
	555	putc ('#');
	556	}
	557
	558	rlen = ntohl(rpc_pkt.u.reply.data[18]);
23a7a32d WD	559	if ( store_block ((uchar *)pkt+sizeof(rpc_pkt.u.reply), nfs_offset, rlen) )
23a7a32d WD	560	return -9999;
cbd8a35c WD	561
	562	return rlen;
	563	}
	564
	565	/**************************************************************************
	566	Interfaces of U-BOOT
	567	**************************************************************************/
	568
a5725fab WD	569	static void
	570	NfsTimeout (void)
	571	{
aabb8cb0 ES	572	if ( ++NfsTimeoutCount > NFS_RETRY_COUNT ) {
	573	puts ("\nRetry count exceeded; starting again\n");
	574	NetStartAgain ();
	575	} else {
	576	puts("T ");
	577	NetSetTimeout (NFS_TIMEOUT, NfsTimeout);
fe891ecf	578	NfsSend ();
fe891ecf	579	}
a5725fab WD	580	}
a5725fab WD	581
cbd8a35c WD	582	static void
	583	NfsHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
	584	{
	585	int rlen;
	586
0ebf04c6	587	debug("%s\n", __func__);
cbd8a35c WD	588
	589	if (dest != NfsOurPort) return;
	590
	591	switch (NfsState) {
	592	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
	593	rpc_lookup_reply (PROG_MOUNT, pkt, len);
	594	NfsState = STATE_PRCLOOKUP_PROG_NFS_REQ;
	595	NfsSend ();
	596	break;
	597
	598	case STATE_PRCLOOKUP_PROG_NFS_REQ:
	599	rpc_lookup_reply (PROG_NFS, pkt, len);
	600	NfsState = STATE_MOUNT_REQ;
	601	NfsSend ();
	602	break;
	603
	604	case STATE_MOUNT_REQ:
	605	if (nfs_mount_reply(pkt, len)) {
	606	puts ("*** ERROR: Cannot mount\n");
	607	/* just to be sure... */
	608	NfsState = STATE_UMOUNT_REQ;
	609	NfsSend ();
	610	} else {
	611	NfsState = STATE_LOOKUP_REQ;
	612	NfsSend ();
	613	}
	614	break;
	615
	616	case STATE_UMOUNT_REQ:
	617	if (nfs_umountall_reply(pkt, len)) {
	618	puts ("*** ERROR: Cannot umount\n");
	619	NetState = NETLOOP_FAIL;
	620	} else {
a084f7da	621	puts ("\ndone\n");
23a7a32d	622	NetState = NfsDownloadState;
cbd8a35c WD	623	}
	624	break;
	625
	626	case STATE_LOOKUP_REQ:
	627	if (nfs_lookup_reply(pkt, len)) {
	628	puts ("*** ERROR: File lookup fail\n");
	629	NfsState = STATE_UMOUNT_REQ;
	630	NfsSend ();
	631	} else {
	632	NfsState = STATE_READ_REQ;
	633	nfs_offset = 0;
	634	nfs_len = NFS_READ_SIZE;
	635	NfsSend ();
	636	}
	637	break;
	638
	639	case STATE_READLINK_REQ:
	640	if (nfs_readlink_reply(pkt, len)) {
	641	puts ("*** ERROR: Symlink fail\n");
	642	NfsState = STATE_UMOUNT_REQ;
	643	NfsSend ();
	644	} else {
0ebf04c6	645	debug("Symlink --> %s\n", nfs_path);
cbd8a35c WD	646	nfs_filename = basename (nfs_path);
	647	nfs_path = dirname (nfs_path);
	648
	649	NfsState = STATE_MOUNT_REQ;
	650	NfsSend ();
	651	}
	652	break;
	653
	654	case STATE_READ_REQ:
	655	rlen = nfs_read_reply (pkt, len);
49f3bdbb	656	NetSetTimeout (NFS_TIMEOUT, NfsTimeout);
cbd8a35c WD	657	if (rlen > 0) {
	658	nfs_offset += rlen;
	659	NfsSend ();
	660	}
	661	else if ((rlen == -NFSERR_ISDIR)\|\|(rlen == -NFSERR_INVAL)) {
	662	/* symbolic link */
	663	NfsState = STATE_READLINK_REQ;
	664	NfsSend ();
	665	} else {
23a7a32d	666	if ( ! rlen ) NfsDownloadState = NETLOOP_SUCCESS;
cbd8a35c WD	667	NfsState = STATE_UMOUNT_REQ;
	668	NfsSend ();
	669	}
	670	break;
	671	}
	672	}
	673
cbd8a35c WD	674
	675	void
	676	NfsStart (void)
	677	{
0ebf04c6	678	debug("%s\n", __func__);
23a7a32d	679	NfsDownloadState = NETLOOP_FAIL;
cbd8a35c WD	680
	681	NfsServerIP = NetServerIP;
	682	nfs_path = (char *)nfs_path_buff;
	683
	684	if (nfs_path == NULL) {
	685	NetState = NETLOOP_FAIL;
	686	puts ("*** ERROR: Fail allocate memory\n");
	687	return;
	688	}
	689
	690	if (BootFile[0] == '\0') {
cbd8a35c	691	sprintf (default_filename, "/nfsroot/%02lX%02lX%02lX%02lX.img",
c43352cc WD	692	NetOurIP & 0xFF,
	693	(NetOurIP >> 8) & 0xFF,
	694	(NetOurIP >> 16) & 0xFF,
	695	(NetOurIP >> 24) & 0xFF );
cbd8a35c WD	696	strcpy (nfs_path, default_filename);
	697
	698	printf ("*** Warning: no boot file name; using '%s'\n",
	699	nfs_path);
	700	} else {
	701	char *p=BootFile;
	702
	703	p = strchr (p, ':');
	704
	705	if (p != NULL) {
	706	NfsServerIP = string_to_ip (BootFile);
	707	++p;
	708	strcpy (nfs_path, p);
	709	} else {
	710	strcpy (nfs_path, BootFile);
	711	}
	712	}
	713
	714	nfs_filename = basename (nfs_path);
	715	nfs_path = dirname (nfs_path);
	716
	717	#if defined(CONFIG_NET_MULTI)
	718	printf ("Using %s device\n", eth_get_name());
	719	#endif
	720
b6446b67 MF	721	printf("File transfer via NFS from server %pI4"
b6446b67 MF	722	"; our IP address is %pI4", &NfsServerIP, &NetOurIP);
cbd8a35c WD	723
	724	/* Check if we need to send across this subnet */
	725	if (NetOurGatewayIP && NetOurSubnetMask) {
	726	IPaddr_t OurNet = NetOurIP & NetOurSubnetMask;
	727	IPaddr_t ServerNet = NetServerIP & NetOurSubnetMask;
	728
b6446b67 MF	729	if (OurNet != ServerNet)
b6446b67 MF	730	printf("; sending through gateway %pI4", &NetOurGatewayIP);
cbd8a35c	731	}
4b9206ed	732	printf ("\nFilename '%s/%s'.", nfs_path, nfs_filename);
cbd8a35c WD	733
	734	if (NetBootFileSize) {
	735	printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
	736	print_size (NetBootFileSize<<9, "");
	737	}
4b9206ed WD	738	printf ("\nLoad address: 0x%lx\n"
4b9206ed WD	739	"Loading: *\b", load_addr);
cbd8a35c	740
49f3bdbb	741	NetSetTimeout (NFS_TIMEOUT, NfsTimeout);
cbd8a35c WD	742	NetSetHandler (NfsHandler);
cbd8a35c WD	743
cbd8a35c WD	744	NfsTimeoutCount = 0;
	745	NfsState = STATE_PRCLOOKUP_PROG_MOUNT_REQ;
	746
	747	/NfsOurPort = 4096 + (get_ticks() % 3072);/
	748	/FIX ME !!!/
	749	NfsOurPort = 1000;
	750
	751	/* zero out server ether in case the server ip has changed */
	752	memset (NetServerEther, 0, 6);
	753
	754	NfsSend ();
	755	}