[people/ms/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"

#if defined(CONFIG_CMD_NET) && defined(CONFIG_CMD_NFS)

#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+1] = 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 ) {
		NfsSend ();
		return;
	}
	puts ("Timeout\n");
	NetState = NETLOOP_FAIL;
	return;
}

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 ();
}

#endif
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
3865b1fb	32	#if defined(CONFIG_CMD_NET) && defined(CONFIG_CMD_NFS)
cbd8a35c WD	33
cbd8a35c WD	34	#define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */
fe891ecf	35	#define NFS_RETRY_COUNT 30
49f3bdbb	36	#define NFS_TIMEOUT 2000UL
cbd8a35c WD	37
cbd8a35c WD	38	static int fs_mounted = 0;
c3f9d493	39	static unsigned long rpc_id = 0;
cbd8a35c WD	40	static int nfs_offset = -1;
	41	static int nfs_len;
	42
	43	static char dirfh[NFS_FHSIZE]; /* file handle of directory */
	44	static char filefh[NFS_FHSIZE]; /* file handle of kernel image */
	45
23a7a32d	46	static int NfsDownloadState;
cbd8a35c WD	47	static IPaddr_t NfsServerIP;
	48	static int NfsSrvMountPort;
	49	static int NfsSrvNfsPort;
	50	static int NfsOurPort;
	51	static int NfsTimeoutCount;
	52	static int NfsState;
	53	#define STATE_PRCLOOKUP_PROG_MOUNT_REQ 1
	54	#define STATE_PRCLOOKUP_PROG_NFS_REQ 2
	55	#define STATE_MOUNT_REQ 3
	56	#define STATE_UMOUNT_REQ 4
	57	#define STATE_LOOKUP_REQ 5
	58	#define STATE_READ_REQ 6
	59	#define STATE_READLINK_REQ 7
	60
	61	static char default_filename[64];
	62	static char *nfs_filename;
	63	static char *nfs_path;
	64	static char nfs_path_buff[2048];
	65
23a7a32d	66	static __inline__ int
cbd8a35c WD	67	store_block (uchar * src, unsigned offset, unsigned len)
cbd8a35c WD	68	{
a084f7da	69	ulong newsize = offset + len;
6d0f6bcf	70	#ifdef CONFIG_SYS_DIRECT_FLASH_NFS
cbd8a35c WD	71	int i, rc = 0;
cbd8a35c WD	72
6d0f6bcf	73	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; i++) {
cbd8a35c WD	74	/* start address in flash? */
	75	if (load_addr + offset >= flash_info[i].start[0]) {
	76	rc = 1;
	77	break;
	78	}
	79	}
	80
	81	if (rc) { /* Flash is destination for this packet */
	82	rc = flash_write ((uchar *)src, (ulong)(load_addr+offset), len);
	83	if (rc) {
	84	flash_perror (rc);
23a7a32d	85	return -1;
cbd8a35c WD	86	}
cbd8a35c WD	87	} else
6d0f6bcf	88	#endif /* CONFIG_SYS_DIRECT_FLASH_NFS */
cbd8a35c WD	89	{
	90	(void)memcpy ((void *)(load_addr + offset), src, len);
	91	}
a084f7da WD	92
	93	if (NetBootFileXferSize < (offset+len))
	94	NetBootFileXferSize = newsize;
23a7a32d	95	return 0;
cbd8a35c WD	96	}
	97
	98	static char*
	99	basename (char *path)
	100	{
	101	char *fname;
	102
	103	fname = path + strlen(path) - 1;
	104	while (fname >= path) {
	105	if (*fname == '/') {
	106	fname++;
	107	break;
	108	}
	109	fname--;
	110	}
	111	return fname;
	112	}
	113
	114	static char*
	115	dirname (char *path)
	116	{
	117	char *fname;
	118
	119	fname = basename (path);
	120	--fname;
	121	*fname = '\0';
	122	return path;
	123	}
	124
cbd8a35c WD	125	/**************************************************************************
	126	RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
	127	**************************************************************************/
	128	static long rpc_add_credentials (long p)
	129	{
	130	int hl;
	131	int hostnamelen;
	132	char hostname[256];
	133
	134	strcpy (hostname, "");
	135	hostnamelen=strlen (hostname);
	136
	137	/* Here's the executive summary on authentication requirements of the
	138	* various NFS server implementations: Linux accepts both AUTH_NONE
	139	* and AUTH_UNIX authentication (also accepts an empty hostname field
	140	* in the AUTH_UNIX scheme). *BSD refuses AUTH_NONE, but accepts
	141	* AUTH_UNIX (also accepts an empty hostname field in the AUTH_UNIX
	142	* scheme). To be safe, use AUTH_UNIX and pass the hostname if we have
	143	* it (if the BOOTP/DHCP reply didn't give one, just use an empty
	144	* hostname). */
	145
	146	hl = (hostnamelen + 3) & ~3;
	147
	148	/* Provide an AUTH_UNIX credential. */
	149	p++ = htonl(1); / AUTH_UNIX */
	150	p++ = htonl(hl+20); / auth length */
	151	p++ = htonl(0); / stamp */
	152	p++ = htonl(hostnamelen); / hostname string */
	153	if (hostnamelen & 3) {
	154	(p + hostnamelen / 4) = 0; / add zero padding */
	155	}
	156	memcpy (p, hostname, hostnamelen);
	157	p += hl / 4;
	158	p++ = 0; / uid */
	159	p++ = 0; / gid */
	160	p++ = 0; / auxiliary gid list */
	161
	162	/* Provide an AUTH_NONE verifier. */
	163	p++ = 0; / AUTH_NONE */
	164	p++ = 0; / auth length */
	165
	166	return p;
	167	}
	168
	169	/**************************************************************************
	170	RPC_LOOKUP - Lookup RPC Port numbers
	171	**************************************************************************/
	172	static void
	173	rpc_req (int rpc_prog, int rpc_proc, uint32_t *data, int datalen)
	174	{
	175	struct rpc_t pkt;
	176	unsigned long id;
	177	uint32_t *p;
	178	int pktlen;
	179	int sport;
	180
c3f9d493	181	id = ++rpc_id;
cbd8a35c WD	182	pkt.u.call.id = htonl(id);
	183	pkt.u.call.type = htonl(MSG_CALL);
	184	pkt.u.call.rpcvers = htonl(2); /* use RPC version 2 */
	185	pkt.u.call.prog = htonl(rpc_prog);
	186	pkt.u.call.vers = htonl(2); /* portmapper is version 2 */
	187	pkt.u.call.proc = htonl(rpc_proc);
	188	p = (uint32_t *)&(pkt.u.call.data);
	189
	190	if (datalen)
	191	memcpy ((char )p, (char )data, datalen*sizeof(uint32_t));
	192
	193	pktlen = (char )p + datalensizeof(uint32_t) - (char *)&pkt;
	194
a3d991bd	195	memcpy ((char )NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE, (char )&pkt, pktlen);
cbd8a35c WD	196
	197	if (rpc_prog == PROG_PORTMAP)
	198	sport = SUNRPC_PORT;
	199	else if (rpc_prog == PROG_MOUNT)
	200	sport = NfsSrvMountPort;
	201	else
	202	sport = NfsSrvNfsPort;
	203
	204	NetSendUDPPacket (NetServerEther, NfsServerIP, sport, NfsOurPort, pktlen);
	205	}
	206
	207	/**************************************************************************
	208	RPC_LOOKUP - Lookup RPC Port numbers
	209	**************************************************************************/
	210	static void
	211	rpc_lookup_req (int prog, int ver)
	212	{
	213	uint32_t data[16];
	214
	215	data[0] = 0; data[1] = 0; /* auth credential */
	216	data[2] = 0; data[3] = 0; /* auth verifier */
	217	data[4] = htonl(prog);
	218	data[5] = htonl(ver);
	219	data[6] = htonl(17); /* IP_UDP */
	220	data[7] = 0;
	221
	222	rpc_req (PROG_PORTMAP, PORTMAP_GETPORT, data, 8);
	223	}
	224
	225	/**************************************************************************
	226	NFS_MOUNT - Mount an NFS Filesystem
	227	**************************************************************************/
	228	static void
	229	nfs_mount_req (char *path)
	230	{
	231	uint32_t data[1024];
	232	uint32_t *p;
	233	int len;
	234	int pathlen;
	235
	236	pathlen = strlen (path);
	237
	238	p = &(data[0]);
	239	p = (uint32_t )rpc_add_credentials((long )p);
	240
	241	*p++ = htonl(pathlen);
	242	if (pathlen & 3) *(p + pathlen / 4) = 0;
	243	memcpy (p, path, pathlen);
	244	p += (pathlen + 3) / 4;
	245
	246	len = (uint32_t )p - (uint32_t )&(data[0]);
	247
	248	rpc_req (PROG_MOUNT, MOUNT_ADDENTRY, data, len);
	249	}
	250
	251	/**************************************************************************
	252	NFS_UMOUNTALL - Unmount all our NFS Filesystems on the Server
	253	**************************************************************************/
	254	static void
	255	nfs_umountall_req (void)
	256	{
	257	uint32_t data[1024];
	258	uint32_t *p;
	259	int len;
260
261	if ((NfsSrvMountPort == -1) \|\| (!fs_mounted)) {
262	/* Nothing mounted, nothing to umount */
263	return;
264	}
265
266	p = &(data[0]);
267	p = (uint32_t )rpc_add_credentials ((long )p);
268
269	len = (uint32_t )p - (uint32_t )&(data[0]);
270
271	rpc_req (PROG_MOUNT, MOUNT_UMOUNTALL, data, len);
272	}
273
274	/***************************************************************************
275	* NFS_READLINK (AH 2003-07-14)
276	* This procedure is called when read of the first block fails -
277	* this probably happens when it's a directory or a symlink
278	* In case of successful readlink(), the dirname is manipulated,
279	* so that inside the nfs() function a recursion can be done.
280	**************************************************************************/
281	static void
282	nfs_readlink_req (void)
283	{
284	uint32_t data[1024];
285	uint32_t *p;
286	int len;
287
288	p = &(data[0]);
289	p = (uint32_t )rpc_add_credentials ((long )p);
290
291	memcpy (p, filefh, NFS_FHSIZE);
292	p += (NFS_FHSIZE / 4);
293
294	len = (uint32_t )p - (uint32_t )&(data[0]);
295
296	rpc_req (PROG_NFS, NFS_READLINK, data, len);
297	}
298
299	/**************************************************************************
300	NFS_LOOKUP - Lookup Pathname
301	**************************************************************************/
302	static void
303	nfs_lookup_req (char *fname)
304	{
305	uint32_t data[1024];
306	uint32_t *p;
307	int len;
308	int fnamelen;
309
310	fnamelen = strlen (fname);
311
312	p = &(data[0]);
313	p = (uint32_t )rpc_add_credentials ((long )p);
314
315	memcpy (p, dirfh, NFS_FHSIZE);
316	p += (NFS_FHSIZE / 4);
317	*p++ = htonl(fnamelen);
318	if (fnamelen & 3) *(p + fnamelen / 4) = 0;
319	memcpy (p, fname, fnamelen);
320	p += (fnamelen + 3) / 4;
321
322	len = (uint32_t )p - (uint32_t )&(data[0]);
323
324	rpc_req (PROG_NFS, NFS_LOOKUP, data, len);
325	}
326
327	/**************************************************************************
328	NFS_READ - Read File on NFS Server
329	**************************************************************************/
330	static void
331	nfs_read_req (int offset, int readlen)
332	{
333	uint32_t data[1024];
334	uint32_t *p;
335	int len;
336
337	p = &(data[0]);
338	p = (uint32_t )rpc_add_credentials ((long )p);
339
340	memcpy (p, filefh, NFS_FHSIZE);
341	p += (NFS_FHSIZE / 4);
342	*p++ = htonl(offset);
343	*p++ = htonl(readlen);
344	*p++ = 0;
345
346	len = (uint32_t )p - (uint32_t )&(data[0]);
347
348	rpc_req (PROG_NFS, NFS_READ, data, len);
349	}
350
351	/**************************************************************************
352	RPC request dispatcher
353	**************************************************************************/
354
355	static void
356	NfsSend (void)
357	{
0ebf04c6	358	debug("%s\n", __func__);
cbd8a35c WD	359
	360	switch (NfsState) {
	361	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
	362	rpc_lookup_req (PROG_MOUNT, 1);
	363	break;
	364	case STATE_PRCLOOKUP_PROG_NFS_REQ:
	365	rpc_lookup_req (PROG_NFS, 2);
	366	break;
	367	case STATE_MOUNT_REQ:
	368	nfs_mount_req (nfs_path);
	369	break;
	370	case STATE_UMOUNT_REQ:
	371	nfs_umountall_req ();
	372	break;
	373	case STATE_LOOKUP_REQ:
	374	nfs_lookup_req (nfs_filename);
	375	break;
	376	case STATE_READ_REQ:
	377	nfs_read_req (nfs_offset, nfs_len);
	378	break;
	379	case STATE_READLINK_REQ:
	380	nfs_readlink_req ();
	381	break;
	382	}
	383	}
	384
	385	/**************************************************************************
	386	Handlers for the reply from server
	387	**************************************************************************/
	388
	389	static int
	390	rpc_lookup_reply (int prog, uchar *pkt, unsigned len)
	391	{
	392	struct rpc_t rpc_pkt;
	393
	394	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	395
0ebf04c6	396	debug("%s\n", __func__);
cbd8a35c	397
c3f9d493 WD	398	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	399	return -1;
	400
cbd8a35c WD	401	if (rpc_pkt.u.reply.rstatus \|\|
cbd8a35c WD	402	rpc_pkt.u.reply.verifier \|\|
cbd8a35c	403	rpc_pkt.u.reply.astatus) {
c3f9d493	404	return -1;
cbd8a35c WD	405	}
	406
	407	switch (prog) {
	408	case PROG_MOUNT:
	409	NfsSrvMountPort = ntohl(rpc_pkt.u.reply.data[0]);
	410	break;
	411	case PROG_NFS:
	412	NfsSrvNfsPort = ntohl(rpc_pkt.u.reply.data[0]);
	413	break;
	414	}
	415
	416	return 0;
	417	}
	418
	419	static int
	420	nfs_mount_reply (uchar *pkt, unsigned len)
	421	{
	422	struct rpc_t rpc_pkt;
	423
0ebf04c6	424	debug("%s\n", __func__);
cbd8a35c WD	425
	426	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	427
c3f9d493 WD	428	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	429	return -1;
	430
cbd8a35c WD	431	if (rpc_pkt.u.reply.rstatus \|\|
	432	rpc_pkt.u.reply.verifier \|\|
	433	rpc_pkt.u.reply.astatus \|\|
	434	rpc_pkt.u.reply.data[0]) {
	435	return -1;
	436	}
	437
	438	fs_mounted = 1;
	439	memcpy (dirfh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
	440
	441	return 0;
	442	}
	443
	444	static int
	445	nfs_umountall_reply (uchar *pkt, unsigned len)
	446	{
	447	struct rpc_t rpc_pkt;
	448
0ebf04c6	449	debug("%s\n", __func__);
cbd8a35c WD	450
	451	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	452
c3f9d493 WD	453	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	454	return -1;
	455
cbd8a35c WD	456	if (rpc_pkt.u.reply.rstatus \|\|
	457	rpc_pkt.u.reply.verifier \|\|
	458	rpc_pkt.u.reply.astatus) {
	459	return -1;
	460	}
	461
	462	fs_mounted = 0;
	463	memset (dirfh, 0, sizeof(dirfh));
	464
	465	return 0;
	466	}
	467
	468	static int
	469	nfs_lookup_reply (uchar *pkt, unsigned len)
	470	{
	471	struct rpc_t rpc_pkt;
	472
0ebf04c6	473	debug("%s\n", __func__);
cbd8a35c WD	474
	475	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	476
c3f9d493 WD	477	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	478	return -1;
	479
cbd8a35c WD	480	if (rpc_pkt.u.reply.rstatus \|\|
	481	rpc_pkt.u.reply.verifier \|\|
	482	rpc_pkt.u.reply.astatus \|\|
	483	rpc_pkt.u.reply.data[0]) {
	484	return -1;
	485	}
	486
	487	memcpy (filefh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
	488
	489	return 0;
	490	}
	491
	492	static int
	493	nfs_readlink_reply (uchar *pkt, unsigned len)
	494	{
	495	struct rpc_t rpc_pkt;
	496	int rlen;
	497
0ebf04c6	498	debug("%s\n", __func__);
cbd8a35c WD	499
	500	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
	501
c3f9d493 WD	502	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	503	return -1;
	504
cbd8a35c WD	505	if (rpc_pkt.u.reply.rstatus \|\|
	506	rpc_pkt.u.reply.verifier \|\|
	507	rpc_pkt.u.reply.astatus \|\|
	508	rpc_pkt.u.reply.data[0]) {
	509	return -1;
	510	}
	511
	512	rlen = ntohl (rpc_pkt.u.reply.data[1]); /* new path length */
	513
	514	if (((char )&(rpc_pkt.u.reply.data[2])) != '/') {
	515	int pathlen;
	516	strcat (nfs_path, "/");
	517	pathlen = strlen(nfs_path);
	518	memcpy (nfs_path+pathlen, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
	519	nfs_path[pathlen+rlen+1] = 0;
	520	} else {
	521	memcpy (nfs_path, (uchar *)&(rpc_pkt.u.reply.data[2]), rlen);
	522	nfs_path[rlen] = 0;
	523	}
	524	return 0;
	525	}
	526
	527	static int
	528	nfs_read_reply (uchar *pkt, unsigned len)
	529	{
	530	struct rpc_t rpc_pkt;
	531	int rlen;
	532
0ebf04c6	533	debug("%s\n", __func__);
cbd8a35c	534
11dadd54	535	memcpy ((uchar *)&rpc_pkt, pkt, sizeof(rpc_pkt.u.reply));
cbd8a35c	536
c3f9d493 WD	537	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
	538	return -1;
	539
cbd8a35c WD	540	if (rpc_pkt.u.reply.rstatus \|\|
	541	rpc_pkt.u.reply.verifier \|\|
	542	rpc_pkt.u.reply.astatus \|\|
	543	rpc_pkt.u.reply.data[0]) {
	544	if (rpc_pkt.u.reply.rstatus) {
	545	return -9999;
	546	}
	547	if (rpc_pkt.u.reply.astatus) {
	548	return -9999;
	549	}
	550	return -ntohl(rpc_pkt.u.reply.data[0]);;
	551	}
	552
	553	if ((nfs_offset!=0) && !((nfs_offset) % (NFS_READ_SIZE/210HASHES_PER_LINE))) {
	554	puts ("\n\t ");
	555	}
	556	if (!(nfs_offset % ((NFS_READ_SIZE/2)*10))) {
	557	putc ('#');
	558	}
	559
	560	rlen = ntohl(rpc_pkt.u.reply.data[18]);
23a7a32d WD	561	if ( store_block ((uchar *)pkt+sizeof(rpc_pkt.u.reply), nfs_offset, rlen) )
23a7a32d WD	562	return -9999;
cbd8a35c WD	563
	564	return rlen;
	565	}
	566
	567	/**************************************************************************
	568	Interfaces of U-BOOT
	569	**************************************************************************/
	570
a5725fab WD	571	static void
	572	NfsTimeout (void)
	573	{
fe891ecf HI	574	if ( NfsTimeoutCount++ < NFS_RETRY_COUNT ) {
	575	NfsSend ();
	576	return;
	577	}
a5725fab WD	578	puts ("Timeout\n");
	579	NetState = NETLOOP_FAIL;
	580	return;
	581	}
	582
cbd8a35c WD	583	static void
	584	NfsHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
	585	{
	586	int rlen;
	587
0ebf04c6	588	debug("%s\n", __func__);
cbd8a35c WD	589
	590	if (dest != NfsOurPort) return;
	591
	592	switch (NfsState) {
	593	case STATE_PRCLOOKUP_PROG_MOUNT_REQ:
	594	rpc_lookup_reply (PROG_MOUNT, pkt, len);
	595	NfsState = STATE_PRCLOOKUP_PROG_NFS_REQ;
	596	NfsSend ();
	597	break;
	598
	599	case STATE_PRCLOOKUP_PROG_NFS_REQ:
	600	rpc_lookup_reply (PROG_NFS, pkt, len);
	601	NfsState = STATE_MOUNT_REQ;
	602	NfsSend ();
	603	break;
	604
	605	case STATE_MOUNT_REQ:
	606	if (nfs_mount_reply(pkt, len)) {
	607	puts ("*** ERROR: Cannot mount\n");
	608	/* just to be sure... */
	609	NfsState = STATE_UMOUNT_REQ;
	610	NfsSend ();
	611	} else {
	612	NfsState = STATE_LOOKUP_REQ;
	613	NfsSend ();
	614	}
	615	break;
	616
	617	case STATE_UMOUNT_REQ:
	618	if (nfs_umountall_reply(pkt, len)) {
	619	puts ("*** ERROR: Cannot umount\n");
	620	NetState = NETLOOP_FAIL;
	621	} else {
a084f7da	622	puts ("\ndone\n");
23a7a32d	623	NetState = NfsDownloadState;
cbd8a35c WD	624	}
	625	break;
	626
	627	case STATE_LOOKUP_REQ:
	628	if (nfs_lookup_reply(pkt, len)) {
	629	puts ("*** ERROR: File lookup fail\n");
	630	NfsState = STATE_UMOUNT_REQ;
	631	NfsSend ();
	632	} else {
	633	NfsState = STATE_READ_REQ;
	634	nfs_offset = 0;
	635	nfs_len = NFS_READ_SIZE;
	636	NfsSend ();
	637	}
	638	break;
	639
	640	case STATE_READLINK_REQ:
	641	if (nfs_readlink_reply(pkt, len)) {
	642	puts ("*** ERROR: Symlink fail\n");
	643	NfsState = STATE_UMOUNT_REQ;
	644	NfsSend ();
	645	} else {
0ebf04c6	646	debug("Symlink --> %s\n", nfs_path);
cbd8a35c WD	647	nfs_filename = basename (nfs_path);
	648	nfs_path = dirname (nfs_path);
	649
	650	NfsState = STATE_MOUNT_REQ;
	651	NfsSend ();
	652	}
	653	break;
	654
	655	case STATE_READ_REQ:
	656	rlen = nfs_read_reply (pkt, len);
49f3bdbb	657	NetSetTimeout (NFS_TIMEOUT, NfsTimeout);
cbd8a35c WD	658	if (rlen > 0) {
	659	nfs_offset += rlen;
	660	NfsSend ();
	661	}
	662	else if ((rlen == -NFSERR_ISDIR)\|\|(rlen == -NFSERR_INVAL)) {
	663	/* symbolic link */
	664	NfsState = STATE_READLINK_REQ;
	665	NfsSend ();
	666	} else {
23a7a32d	667	if ( ! rlen ) NfsDownloadState = NETLOOP_SUCCESS;
cbd8a35c WD	668	NfsState = STATE_UMOUNT_REQ;
	669	NfsSend ();
	670	}
	671	break;
	672	}
	673	}
	674
cbd8a35c WD	675
	676	void
	677	NfsStart (void)
	678	{
0ebf04c6	679	debug("%s\n", __func__);
23a7a32d	680	NfsDownloadState = NETLOOP_FAIL;
cbd8a35c WD	681
	682	NfsServerIP = NetServerIP;
	683	nfs_path = (char *)nfs_path_buff;
	684
	685	if (nfs_path == NULL) {
	686	NetState = NETLOOP_FAIL;
	687	puts ("*** ERROR: Fail allocate memory\n");
	688	return;
	689	}
	690
	691	if (BootFile[0] == '\0') {
cbd8a35c	692	sprintf (default_filename, "/nfsroot/%02lX%02lX%02lX%02lX.img",
c43352cc WD	693	NetOurIP & 0xFF,
	694	(NetOurIP >> 8) & 0xFF,
	695	(NetOurIP >> 16) & 0xFF,
	696	(NetOurIP >> 24) & 0xFF );
cbd8a35c WD	697	strcpy (nfs_path, default_filename);
	698
	699	printf ("*** Warning: no boot file name; using '%s'\n",
	700	nfs_path);
	701	} else {
	702	char *p=BootFile;
	703
	704	p = strchr (p, ':');
	705
	706	if (p != NULL) {
	707	NfsServerIP = string_to_ip (BootFile);
	708	++p;
	709	strcpy (nfs_path, p);
	710	} else {
	711	strcpy (nfs_path, BootFile);
	712	}
	713	}
	714
	715	nfs_filename = basename (nfs_path);
	716	nfs_path = dirname (nfs_path);
	717
	718	#if defined(CONFIG_NET_MULTI)
	719	printf ("Using %s device\n", eth_get_name());
	720	#endif
	721
b6446b67 MF	722	printf("File transfer via NFS from server %pI4"
b6446b67 MF	723	"; our IP address is %pI4", &NfsServerIP, &NetOurIP);
cbd8a35c WD	724
	725	/* Check if we need to send across this subnet */
	726	if (NetOurGatewayIP && NetOurSubnetMask) {
	727	IPaddr_t OurNet = NetOurIP & NetOurSubnetMask;
	728	IPaddr_t ServerNet = NetServerIP & NetOurSubnetMask;
	729
b6446b67 MF	730	if (OurNet != ServerNet)
b6446b67 MF	731	printf("; sending through gateway %pI4", &NetOurGatewayIP);
cbd8a35c	732	}
4b9206ed	733	printf ("\nFilename '%s/%s'.", nfs_path, nfs_filename);
cbd8a35c WD	734
	735	if (NetBootFileSize) {
	736	printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
	737	print_size (NetBootFileSize<<9, "");
	738	}
4b9206ed WD	739	printf ("\nLoad address: 0x%lx\n"
4b9206ed WD	740	"Loading: *\b", load_addr);
cbd8a35c	741
49f3bdbb	742	NetSetTimeout (NFS_TIMEOUT, NfsTimeout);
cbd8a35c WD	743	NetSetHandler (NfsHandler);
cbd8a35c WD	744
cbd8a35c WD	745	NfsTimeoutCount = 0;
	746	NfsState = STATE_PRCLOOKUP_PROG_MOUNT_REQ;
	747
	748	/NfsOurPort = 4096 + (get_ticks() % 3072);/
	749	/FIX ME !!!/
	750	NfsOurPort = 1000;
	751
	752	/* zero out server ether in case the server ip has changed */
	753	memset (NetServerEther, 0, 6);
	754
	755	NfsSend ();
	756	}
	757
643d1ab2	758	#endif