* Patch by Masami Komiy, 22 Feb 2004:

  Add support for NFS for file download

* Minor code cleanup

CHANGELOG

@@ -2,6 +2,9 @@
 Changes for U-Boot 1.0.2:
 ======================================================================
 
+* Patch by Masami Komiy, 22 Feb 2004:
+  Add support for NFS for file download
+
 * Patch by Andrea Scian, 17 Feb 2004:
   Add support for S3C44B0 processor and DAVE B2 board
 

common/cmd_bootm.c

@@ -575,10 +575,10 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 		kbd->bi_sccfreq /= 1000000L;
 		kbd->bi_vco     /= 1000000L;
 #endif /* CONFIG_8260 */
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 		kbd->bi_ipbfreq /= 1000000L;
 		kbd->bi_pcifreq /= 1000000L;
-#endif /* CONFIG_MPC5XXX */
+#endif /* CONFIG_MPC5xxx */
 	}
 
 	kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))hdr->ih_ep;

common/cmd_itest.c

@@ -32,6 +32,8 @@
 #include <config.h>
 #include <command.h>
 
+#if (CONFIG_COMMANDS & CFG_CMD_ITEST)
+
 #define EQ	0
 #define NE	1
 #define LT	2
@@ -195,3 +197,4 @@ U_BOOT_CMD(
 	"itest	 - return true/false on integer compare\n",
 	"[.b, .w, .l, .s] [*]value1 <op> [*]value2\n"
 );
+#endif	/* CONFIG_COMMANDS & CFG_CMD_ITEST */

common/cmd_mem.c

@@ -38,6 +38,7 @@
 
 #if (CONFIG_COMMANDS & (CFG_CMD_MEMORY	| \
 			CFG_CMD_I2C	| \
+			CFG_CMD_ITEST	| \
 			CFG_CMD_PCI	| \
 			CMD_CMD_PORTIO	) )
 int cmd_get_data_size(char* arg, int default_size)

common/cmd_net.c

@@ -81,6 +81,19 @@ U_BOOT_CMD(
 );
 #endif	/* CFG_CMD_DHCP */
 
+#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+int do_nfs (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	return netboot_common(NFS, cmdtp, argc, argv);
+}
+
+U_BOOT_CMD(
+	nfs,	3,	1,	do_nfs,
+	"nfs    - boot image via network using NFS protocol\n",
+	"[loadAddress] [host ip addr:bootfilename]\n"
+);
+#endif	/* CFG_CMD_NFS */
+
 static void netboot_update_env(void)
 {
     char tmp[16] ;

cpu/mpc5xxx/config.mk

@@ -23,5 +23,5 @@
 
 PLATFORM_RELFLAGS += -fPIC -ffixed-r14 -meabi
 
-PLATFORM_CPPFLAGS += -DCONFIG_MPC5XXX -ffixed-r2 -ffixed-r29 \
+PLATFORM_CPPFLAGS += -DCONFIG_MPC5xxx -ffixed-r2 -ffixed-r29 \
 		     -mstring -mcpu=603e -mmultiple

cpu/mpc5xxx/cpu_init.c

@@ -183,7 +183,7 @@ int cpu_init_r (void)
 	/* route critical ints to normal ints */
 	*(vu_long *)MPC5XXX_ICTL_EXT |= 0x00000001;
 
-#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_MPC5XXX_FEC)
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_MPC5xxx_FEC)
 	/* load FEC microcode */
 	loadtask(0, 2);
 #endif

cpu/mpc5xxx/fec.c

@@ -17,7 +17,7 @@
 /* #define DEBUG	0x28 */
 
 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) && \
-	defined(CONFIG_MPC5XXX_FEC)
+	defined(CONFIG_MPC5xxx_FEC)
 
 #if (DEBUG & 0x60)
 static void tfifo_print(mpc5xxx_fec_priv *fec);
@@ -980,4 +980,4 @@ static uint32 local_crc32(char *string, unsigned int crc_value, int len)
 }
 #endif	/* DEBUG */
 
-#endif /* CONFIG_MPC5XXX_FEC */
+#endif /* CONFIG_MPC5xxx_FEC */

cpu/mpc5xxx/start.S

@@ -29,7 +29,7 @@
 #include <mpc5xxx.h>
 #include <version.h>
 
-#define CONFIG_MPC5XXX 1	/* needed for Linux kernel header files */
+#define CONFIG_MPC5xxx 1	/* needed for Linux kernel header files */
 #define _LINUX_CONFIG_H 1	/* avoid reading Linux autoconf.h file	*/
 
 #include <ppc_asm.tmpl>

include/asm-ppc/global_data.h

@@ -46,7 +46,7 @@ typedef	struct	global_data {
 	unsigned long	scc_clk;
 	unsigned long	brg_clk;
 #endif
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 	unsigned long	ipb_clk;
 	unsigned long	pci_clk;
 #endif

include/asm-ppc/u-boot.h

@@ -42,7 +42,7 @@ typedef struct bd_info {
 	|| defined(CONFIG_E500)
 	unsigned long	bi_immr_base;	/* base of IMMR register */
 #endif
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 	unsigned long	bi_mbar_base;	/* base of internal registers */
 #endif
 	unsigned long	bi_bootflags;	/* boot / reboot flag (for LynxOS) */
@@ -57,7 +57,7 @@ typedef struct bd_info {
 	unsigned long	bi_sccfreq;	/* SCC_CLK Freq, in MHz */
 	unsigned long	bi_vco;		/* VCO Out from PLL, in MHz */
 #endif
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 	unsigned long	bi_ipbfreq;	/* IPB Bus Freq, in MHz */
 	unsigned long	bi_pcifreq;	/* PCI Bus Freq, in MHz */
 #endif

include/bmp_logo.h

@@ -18,7 +18,7 @@ unsigned short bmp_logo_palette[] = {
 	0x0343,  0x0454,  0x0565,  0x0565,  0x0676,  0x0787,  0x0898,  0x0999,
 	0x0AAA,  0x0ABA,  0x0BCB,  0x0CCC,  0x0DDD,  0x0EEE,  0x0FFF,  0x0FB3,
 	0x0FB4,  0x0FC4,  0x0FC5,  0x0FC6,  0x0FD7,  0x0FD8,  0x0FD9,  0x0FDA,
-	0x0FEA,  0x0FEB,  0x0FEC,  0x0FFD,  0x0FFE,  0x0FFF,  0x0FFF,
+	0x0FEA,  0x0FEB,  0x0FEC,  0x0FFD,  0x0FFE,  0x0FFF,  0x0FFF,  
 };
 
 unsigned char bmp_logo_bitmap[] = {

include/cmd_confdefs.h

@@ -86,6 +86,7 @@
 #define CFG_CMD_FAT	0x0010000000000000U	/* FAT support			*/
 #define CFG_CMD_IMLS	0x0020000000000000U	/* List all found images        */
 #define CFG_CMD_ITEST	0x0040000000000000U	/* Integer (and string) test	*/
+#define CFG_CMD_NFS	0x0080000000000000U	/* NFS support			*/
 
 #define CFG_CMD_ALL	0xFFFFFFFFFFFFFFFFU	/* ALL commands			*/
 

include/common.h

@@ -319,6 +319,7 @@ void	relocate_code (ulong, gd_t *, ulong);
 ulong	get_endaddr   (void);
 void	trap_init     (ulong);
 #if defined (CONFIG_4xx)	|| \
+    defined (CONFIG_5xxx)	|| \
     defined (CONFIG_74xx_7xx)	|| \
     defined (CONFIG_74x)	|| \
     defined (CONFIG_75x)	|| \
@@ -361,7 +362,7 @@ int	sdram_adjust_866 (void);
 #if defined(CONFIG_8260)
 int	prt_8260_clks (void);
 #endif
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 int	prt_mpc5xxx_clks (void);
 #endif
 #ifdef CONFIG_4xx

include/configs/IceCube.h

@@ -29,7 +29,7 @@
  * (easy to change)
  */
 
-#define CONFIG_MPC5XXX		1	/* This is an MPC5xxx CPU */
+#define CONFIG_MPC5xxx		1	/* This is an MPC5xxx CPU */
 #define CONFIG_ICECUBE		1	/* ... on IceCube board */
 
 #define CFG_MPC5XXX_CLKIN	33000000 /* ... running at 33.000000MHz */
@@ -213,7 +213,7 @@
 /*
  * Ethernet configuration
  */
-#define CONFIG_MPC5XXX_FEC	1
+#define CONFIG_MPC5xxx_FEC	1
 #define CONFIG_FEC_10MBIT 1 /* Workaround for FEC 100Mbit problem */
 #define CONFIG_PHY_ADDR		0x00
 

include/configs/TOP5200.h

@@ -41,7 +41,7 @@
  * (easy to change)
  */
 
-#define CONFIG_MPC5XXX		1	/* This is an MPC5xxx CPU */
+#define CONFIG_MPC5xxx		1	/* This is an MPC5xxx CPU */
 #define CONFIG_MPC5200		1	/* More exactly a MPC5200 */
 #define CONFIG_TOP5200		1	/* ... on TOP5200 board - we need this for FEC.C */
 
@@ -281,7 +281,7 @@
 /*
  * Ethernet configuration
  */
-#define CONFIG_MPC5XXX_FEC	1
+#define CONFIG_MPC5xxx_FEC	1
 #define CONFIG_FEC_10MBIT	1		/* Workaround for FEC 100Mbit problem */
 #define	CONFIG_PHY_ADDR		0x1f
 #define	CONFIG_PHY_TYPE		0x79c874

include/net.h

@@ -21,13 +21,13 @@
 # endif
 #endif	/* CONFIG_8xx */
 
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 # if !defined(CONFIG_NET_MULTI)
-#  if defined(CONFIG_MPC5XXX_FEC)
+#  if defined(CONFIG_MPC5xxx_FEC)
 #   define CONFIG_NET_MULTI
 #  endif
 # endif
-#endif	/* CONFIG_MPC5XXX */
+#endif	/* CONFIG_MPC5xxx */
 
 #if !defined(CONFIG_NET_MULTI) && (defined(CONFIG_8260) || defined(CONFIG_MPC8560))
 #include <config.h>
@@ -306,7 +306,7 @@ extern int		NetState;		/* Network loop state		*/
 extern int		NetRestartWrap;		/* Tried all network devices	*/
 #endif
 
-typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS } proto_t;
+typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS } proto_t;
 
 /* from net/net.c */
 extern char	BootFile[128];			/* Boot File name		*/

include/ppc_asm.tmpl

@@ -175,7 +175,7 @@
 #define IM_IMMR		(IM_REGBASE+0x01a8)
 #define IM_SCCR		(IM_REGBASE+0x0c80)
 
-#elif defined(CONFIG_MPC5XXX)
+#elif defined(CONFIG_MPC5xxx)
 
 #define HID0_ICE_BITPOS	16
 #define HID0_DCE_BITPOS	17

lib_ppc/board.c

@@ -32,7 +32,7 @@
 #ifdef CONFIG_5xx
 #include <mpc5xx.h>
 #endif
-#ifdef CONFIG_MPC5XXX
+#ifdef CONFIG_MPC5xxx
 #include <mpc5xxx.h>
 #endif
 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
@@ -288,9 +288,9 @@ init_fnc_t *init_sequence[] = {
 	prt_8260_clks,
 #endif /* CONFIG_8260 */
 	checkcpu,
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 	prt_mpc5xxx_clks,
-#endif /* CONFIG_MPC5XXX */
+#endif /* CONFIG_MPC5xxx */
 	checkboard,
 	INIT_FUNC_WATCHDOG_INIT
 #if defined(CONFIG_MISC_INIT_F)
@@ -478,7 +478,7 @@ void board_init_f (ulong bootflag)
     defined(CONFIG_E500)
 	bd->bi_immr_base = CFG_IMMR;	/* base  of IMMR register     */
 #endif
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 	bd->bi_mbar_base = CFG_MBAR;	/* base of internal registers */
 #endif
 
@@ -493,10 +493,10 @@ void board_init_f (ulong bootflag)
 	bd->bi_sccfreq = gd->scc_clk;
 	bd->bi_vco     = gd->vco_out;
 #endif /* CONFIG_8260 */
-#if defined(CONFIG_MPC5XXX)
+#if defined(CONFIG_MPC5xxx)
 	bd->bi_ipbfreq = gd->ipb_clk;
 	bd->bi_pcifreq = gd->pci_clk;
-#endif /* CONFIG_MPC5XXX */
+#endif /* CONFIG_MPC5xxx */
 	bd->bi_baudrate = gd->baudrate;	/* Console Baudrate     */
 
 #ifdef CFG_EXTBDINFO

net/Makefile

@@ -27,7 +27,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= libnet.a
 
-OBJS	= net.o tftp.o bootp.o rarp.o eth.o
+OBJS	= net.o tftp.o bootp.o rarp.o eth.o nfs.o
 all:	$(LIB)
 
 $(LIB):	$(START) $(OBJS)

net/eth.c

@@ -155,7 +155,7 @@ int eth_initialize(bd_t *bis)
 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 	fec_initialize(bis);
 #endif
-#if defined(CONFIG_MPC5XXX_FEC)
+#if defined(CONFIG_MPC5xxx_FEC)
 	mpc5xxx_fec_initialize(bis);
 #endif
 #if defined(CONFIG_SK98)

net/net.c

@@ -55,6 +55,15 @@
  *			  derived from our own IP address)
  *	We want:	- load the boot file
  *	Next step:	none
+ *
+ * NFS:
+ *
+ *	Prerequisites:	- own ethernet address
+ *			- own IP address
+ *			- name of bootfile (if unknown, we use a default name
+ *			  derived from our own IP address)
+ *	We want:	- load the boot file
+ *	Next step:	none
  */
 
 
@@ -65,6 +74,7 @@
 #include "bootp.h"
 #include "tftp.h"
 #include "rarp.h"
+#include "nfs.h"
 #ifdef CONFIG_STATUS_LED
 #include <status_led.h>
 #include <miiphy.h>
@@ -278,6 +288,9 @@ restart:
 	 */
 
 	switch (protocol) {
+#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+	case NFS:
+#endif
 #if (CONFIG_COMMANDS & CFG_CMD_PING)
 	case PING:
 #endif
@@ -287,6 +300,9 @@ restart:
 		NetOurSubnetMask= getenv_IPaddr ("netmask");
 
 		switch (protocol) {
+#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+		case NFS:
+#endif
 		case TFTP:
 			NetServerIP = getenv_IPaddr ("serverip");
 			break;
@@ -356,6 +372,11 @@ restart:
 		case PING:
 			PingStart();
 			break;
+#endif
+#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+		case NFS:
+			NfsStart();
+			break;
 #endif
 		default:
 			break;
@@ -918,6 +939,9 @@ static int net_check_prereq (proto_t protocol)
 				return (1);
 			}
 			goto common;
+#endif
+#if (CONFIG_COMMANDS & CFG_CMD_NFS)
+	case NFS:
 #endif
 	case TFTP:
 			if (NetServerIP == 0) {

net/nfs.c

@@ -0,0 +1,772 @@
+/*
+ * 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 NFS_DEBUG*/
+
+#if ((CONFIG_COMMANDS & CFG_CMD_NET) && (CONFIG_COMMANDS & CFG_CMD_NFS))
+
+#define HASHES_PER_LINE 65	/* Number of "loading" hashes per line	*/
+#define NFS_TIMEOUT 10
+
+static int fs_mounted = 0;
+static unsigned long rpc_id;
+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 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__ void
+store_block (uchar * src, unsigned offset, unsigned len)
+{
+#ifdef CFG_DIRECT_FLASH_NFS
+	int i, rc = 0;
+
+	for (i=0; i<CFG_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);
+			NetState = NETLOOP_FAIL;
+			return;
+		}
+	} else
+#endif /* CFG_DIRECT_FLASH_NFS */
+
+	{
+		(void)memcpy ((void *)(load_addr + offset), src, len);
+	}
+}
+
+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_INIT - set up the ID counter to something fairly random
+**************************************************************************/
+static void
+rpc_init (void)
+{
+	unsigned long t;
+	t=get_ticks();
+	rpc_id = t ^ (t << 8) ^ (t << 16);
+}
+
+/**************************************************************************
+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+ETHER_HDR_SIZE+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)
+{
+#ifdef NFS_DEBUG
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	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);
+
+#ifdef NFS_DEBUG
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	if (rpc_pkt.u.reply.rstatus  ||
+	    rpc_pkt.u.reply.verifier ||
+	    rpc_pkt.u.reply.astatus  ||
+	    rpc_pkt.u.reply.astatus) {
+	}
+
+	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;
+
+#ifdef NFS_DEBUG
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+	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;
+
+#ifdef NFS_DEBUG
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+	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;
+
+#ifdef NFS_DEBUG
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+	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;
+
+#ifdef NFS_DEBUG
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
+
+	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;
+
+#ifdef NFS_DEBUG_nop
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	rlen = (uchar *)&(rpc_pkt.u.reply.data[19]) - (uchar *)&(rpc_pkt.u.reply.id);
+	memcpy ((uchar *)&rpc_pkt, pkt, rlen);
+
+	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]);
+	store_block ((uchar *)&(rpc_pkt.u.reply.data[19]), nfs_offset, rlen);
+
+	return rlen;
+}
+
+/**************************************************************************
+Interfaces of U-BOOT
+**************************************************************************/
+
+static void
+NfsHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
+{
+	int rlen;
+
+#ifdef NFS_DEBUG
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	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 {
+			NetState = NETLOOP_SUCCESS;
+		}
+		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 {
+#ifdef NFS_DEBUG
+			printf ("Symlink --> %s\n", nfs_path);
+#endif
+			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);
+		if (rlen > 0) {
+			nfs_offset += rlen;
+			NfsSend ();
+		}
+		else if ((rlen == -NFSERR_ISDIR)||(rlen == -NFSERR_INVAL)) {
+			/* symbolic link */
+			NfsState = STATE_READLINK_REQ;
+			NfsSend ();
+		} else {
+			puts ("\ndone\n");
+			printf ("Bytes transferred = %d (%x hex)\n",
+				nfs_offset, nfs_offset);
+			NfsState = STATE_UMOUNT_REQ;
+			NfsSend ();
+		}
+		break;
+	}
+}
+
+static void
+NfsTimeout (void)
+{
+	puts ("Timeout\n");
+	NetState = NETLOOP_FAIL;
+	return;
+}
+
+void
+NfsStart (void)
+{
+#ifdef NFS_DEBUG
+	printf ("%s\n", __FUNCTION__);
+#endif
+
+	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') {
+		IPaddr_t OurIP = ntohl (NetOurIP);
+
+		sprintf (default_filename, "/nfsroot/%02lX%02lX%02lX%02lX.img",
+			OurIP & 0xFF,
+			(OurIP >>  8) & 0xFF,
+			(OurIP >> 16) & 0xFF,
+			(OurIP >> 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
+
+	puts ("File transfer via NFS from server "); print_IPaddr (NfsServerIP);
+	puts ("; our IP address is ");		    print_IPaddr (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) {
+			puts ("; sending through gateway ");
+			print_IPaddr (NetOurGatewayIP) ;
+		}
+	}
+	putc ('\n');
+
+	printf ("Filename '%s/%s'.", nfs_path, nfs_filename);
+
+	if (NetBootFileSize) {
+		printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
+		print_size (NetBootFileSize<<9, "");
+	}
+	putc ('\n');
+
+	printf ("Load address: 0x%lx\n", load_addr);
+
+	printf ("Loading: *\b");
+
+	NetSetTimeout (NFS_TIMEOUT * CFG_HZ, NfsTimeout);
+	NetSetHandler (NfsHandler);
+
+	rpc_init ();
+	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 /* CONFIG_COMMANDS & CFG_CMD_NFS */

net/nfs.h

@@ -0,0 +1,74 @@
+/*
+ * (C) Masami Komiya <mkomiya@sonare.it> 2004
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2, or (at
+ * your option) any later version.
+ */
+
+#ifndef __NFS_H__
+#define __NFS_H__
+
+#define SUNRPC_PORT     111
+
+#define PROG_PORTMAP    100000
+#define PROG_NFS        100003
+#define PROG_MOUNT      100005
+
+#define MSG_CALL        0
+#define MSG_REPLY       1
+
+#define PORTMAP_GETPORT 3
+
+#define MOUNT_ADDENTRY  1
+#define MOUNT_UMOUNTALL 4
+
+#define NFS_LOOKUP      4
+#define NFS_READLINK    5
+#define NFS_READ        6
+
+#define NFS_FHSIZE      32
+
+#define NFSERR_PERM     1
+#define NFSERR_NOENT    2
+#define NFSERR_ACCES    13
+#define NFSERR_ISDIR    21
+#define NFSERR_INVAL    22
+
+/* Block size used for NFS read accesses.  A RPC reply packet (including  all
+ * headers) must fit within a single Ethernet frame to avoid fragmentation.
+ * Chosen to be a power of two, as most NFS servers are optimized for this.  */
+#define NFS_READ_SIZE   1024
+
+#define NFS_MAXLINKDEPTH 16
+
+struct rpc_t {
+	union {
+		uint8_t data[2048];
+		struct {
+			uint32_t id;
+			uint32_t type;
+			uint32_t rpcvers;
+			uint32_t prog;
+			uint32_t vers;
+			uint32_t proc;
+			uint32_t data[1];
+		} call;
+		struct {
+			uint32_t id;
+			uint32_t type;
+			uint32_t rstatus;
+			uint32_t verifier;
+			uint32_t v2;
+			uint32_t astatus;
+			uint32_t data[1];
+		} reply;
+	} u;
+};
+extern void	NfsStart (void);	/* Begin NFS */
+
+
+/**********************************************************************/
+
+#endif /* __NFS_H__ */