390 lines
8.6 KiB
C
390 lines
8.6 KiB
C
|
/*
|
||
|
|
* Copyright 1994, 1995, 2000 Neil Russell.
|
||
|
|
* (See License)
|
||
|
|
* Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <command.h>
|
||
|
|
#include <net.h>
|
||
|
|
#include "tftp.h"
|
||
|
|
#include "bootp.h"
|
||
|
|
|
||
|
|
#undef ET_DEBUG
|
||
|
|
|
||
|
|
#if (CONFIG_COMMANDS & CFG_CMD_NET)
|
||
|
|
|
||
|
|
#define WELL_KNOWN_PORT 69 /* Well known TFTP port # */
|
||
|
|
#define TIMEOUT 5 /* Seconds to timeout for a lost pkt */
|
||
|
|
#ifndef CONFIG_NET_RETRY_COUNT
|
||
|
|
# define TIMEOUT_COUNT 10 /* # of timeouts before giving up */
|
||
|
|
#else
|
||
|
|
# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
|
||
|
|
#endif
|
||
|
|
/* (for checking the image size) */
|
||
|
|
#define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* TFTP operations.
|
||
|
|
*/
|
||
|
|
#define TFTP_RRQ 1
|
||
|
|
#define TFTP_WRQ 2
|
||
|
|
#define TFTP_DATA 3
|
||
|
|
#define TFTP_ACK 4
|
||
|
|
#define TFTP_ERROR 5
|
||
|
|
#define TFTP_OACK 6
|
||
|
|
|
||
|
|
|
||
|
|
static int TftpServerPort; /* The UDP port at their end */
|
||
|
|
static int TftpOurPort; /* The UDP port at our end */
|
||
|
|
static int TftpTimeoutCount;
|
||
|
|
static ulong TftpBlock; /* packet sequence number */
|
||
|
|
static ulong TftpLastBlock; /* last packet sequence number received */
|
||
|
|
static ulong TftpBlockWrap; /* count of sequence number wraparounds */
|
||
|
|
static ulong TftpBlockWrapOffset; /* memory offset due to wrapping */
|
||
|
|
static int TftpState;
|
||
|
|
|
||
|
|
#define STATE_RRQ 1
|
||
|
|
#define STATE_DATA 2
|
||
|
|
#define STATE_TOO_LARGE 3
|
||
|
|
#define STATE_BAD_MAGIC 4
|
||
|
|
#define STATE_OACK 5
|
||
|
|
|
||
|
|
#define TFTP_BLOCK_SIZE 512 /* default TFTP block size */
|
||
|
|
#define TFTP_SEQUENCE_SIZE ((ulong)(1<<16)) /* sequence number is 16 bit */
|
||
|
|
|
||
|
|
#define DEFAULT_NAME_LEN (8 + 4 + 1)
|
||
|
|
static char default_filename[DEFAULT_NAME_LEN];
|
||
|
|
static char *tftp_filename;
|
||
|
|
|
||
|
|
#ifdef CFG_DIRECT_FLASH_TFTP
|
||
|
|
extern flash_info_t flash_info[];
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static __inline__ void
|
||
|
|
store_block (unsigned block, uchar * src, unsigned len)
|
||
|
|
{
|
||
|
|
ulong offset = block * TFTP_BLOCK_SIZE + TftpBlockWrapOffset;
|
||
|
|
ulong newsize = offset + len;
|
||
|
|
#ifdef CFG_DIRECT_FLASH_TFTP
|
||
|
|
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 ((char *)src, (ulong)(load_addr+offset), len);
|
||
|
|
if (rc) {
|
||
|
|
flash_perror (rc);
|
||
|
|
NetState = NETLOOP_FAIL;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif /* CFG_DIRECT_FLASH_TFTP */
|
||
|
|
{
|
||
|
|
(void)memcpy((void *)(load_addr + offset), src, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NetBootFileXferSize < newsize)
|
||
|
|
NetBootFileXferSize = newsize;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void TftpSend (void);
|
||
|
|
static void TftpTimeout (void);
|
||
|
|
|
||
|
|
/**********************************************************************/
|
||
|
|
|
||
|
|
static void
|
||
|
|
TftpSend (void)
|
||
|
|
{
|
||
|
|
volatile uchar * pkt;
|
||
|
|
volatile uchar * xp;
|
||
|
|
int len = 0;
|
||
|
|
volatile ushort *s;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* We will always be sending some sort of packet, so
|
||
|
|
* cobble together the packet headers now.
|
||
|
|
*/
|
||
|
|
pkt = NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE;
|
||
|
|
|
||
|
|
switch (TftpState) {
|
||
|
|
|
||
|
|
case STATE_RRQ:
|
||
|
|
xp = pkt;
|
||
|
|
s = (ushort *)pkt;
|
||
|
|
*s++ = htons(TFTP_RRQ);
|
||
|
|
pkt = (uchar *)s;
|
||
|
|
strcpy ((char *)pkt, tftp_filename);
|
||
|
|
pkt += strlen(tftp_filename) + 1;
|
||
|
|
strcpy ((char *)pkt, "octet");
|
||
|
|
pkt += 5 /*strlen("octet")*/ + 1;
|
||
|
|
strcpy ((char *)pkt, "timeout");
|
||
|
|
pkt += 7 /*strlen("timeout")*/ + 1;
|
||
|
|
sprintf((char *)pkt, "%d", TIMEOUT);
|
||
|
|
#ifdef ET_DEBUG
|
||
|
|
printf("send option \"timeout %s\"\n", (char *)pkt);
|
||
|
|
#endif
|
||
|
|
pkt += strlen((char *)pkt) + 1;
|
||
|
|
len = pkt - xp;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case STATE_DATA:
|
||
|
|
case STATE_OACK:
|
||
|
|
xp = pkt;
|
||
|
|
s = (ushort *)pkt;
|
||
|
|
*s++ = htons(TFTP_ACK);
|
||
|
|
*s++ = htons(TftpBlock);
|
||
|
|
pkt = (uchar *)s;
|
||
|
|
len = pkt - xp;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case STATE_TOO_LARGE:
|
||
|
|
xp = pkt;
|
||
|
|
s = (ushort *)pkt;
|
||
|
|
*s++ = htons(TFTP_ERROR);
|
||
|
|
*s++ = htons(3);
|
||
|
|
pkt = (uchar *)s;
|
||
|
|
strcpy ((char *)pkt, "File too large");
|
||
|
|
pkt += 14 /*strlen("File too large")*/ + 1;
|
||
|
|
len = pkt - xp;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case STATE_BAD_MAGIC:
|
||
|
|
xp = pkt;
|
||
|
|
s = (ushort *)pkt;
|
||
|
|
*s++ = htons(TFTP_ERROR);
|
||
|
|
*s++ = htons(2);
|
||
|
|
pkt = (uchar *)s;
|
||
|
|
strcpy ((char *)pkt, "File has bad magic");
|
||
|
|
pkt += 18 /*strlen("File has bad magic")*/ + 1;
|
||
|
|
len = pkt - xp;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
NetSendUDPPacket(NetServerEther, NetServerIP, TftpServerPort, TftpOurPort, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void
|
||
|
|
TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
|
||
|
|
{
|
||
|
|
ushort proto;
|
||
|
|
ushort *s;
|
||
|
|
|
||
|
|
if (dest != TftpOurPort) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (TftpState != STATE_RRQ && src != TftpServerPort) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (len < 2) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
len -= 2;
|
||
|
|
/* warning: don't use increment (++) in ntohs() macros!! */
|
||
|
|
s = (ushort *)pkt;
|
||
|
|
proto = *s++;
|
||
|
|
pkt = (uchar *)s;
|
||
|
|
switch (ntohs(proto)) {
|
||
|
|
|
||
|
|
case TFTP_RRQ:
|
||
|
|
case TFTP_WRQ:
|
||
|
|
case TFTP_ACK:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
|
||
|
|
case TFTP_OACK:
|
||
|
|
#ifdef ET_DEBUG
|
||
|
|
printf("Got OACK: %s %s\n", pkt, pkt+strlen(pkt)+1);
|
||
|
|
#endif
|
||
|
|
TftpState = STATE_OACK;
|
||
|
|
TftpServerPort = src;
|
||
|
|
TftpSend (); /* Send ACK */
|
||
|
|
break;
|
||
|
|
case TFTP_DATA:
|
||
|
|
if (len < 2)
|
||
|
|
return;
|
||
|
|
len -= 2;
|
||
|
|
TftpBlock = ntohs(*(ushort *)pkt);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* RFC1350 specifies that the first data packet will
|
||
|
|
* have sequence number 1. If we receive a sequence
|
||
|
|
* number of 0 this means that there was a wrap
|
||
|
|
* around of the (16 bit) counter.
|
||
|
|
*/
|
||
|
|
if (TftpBlock == 0) {
|
||
|
|
TftpBlockWrap++;
|
||
|
|
TftpBlockWrapOffset += TFTP_BLOCK_SIZE * TFTP_SEQUENCE_SIZE;
|
||
|
|
printf ("\n\t %lu MB reveived\n\t ", TftpBlockWrapOffset>>20);
|
||
|
|
} else {
|
||
|
|
if (((TftpBlock - 1) % 10) == 0) {
|
||
|
|
putc ('#');
|
||
|
|
} else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) {
|
||
|
|
puts ("\n\t ");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef ET_DEBUG
|
||
|
|
if (TftpState == STATE_RRQ) {
|
||
|
|
puts ("Server did not acknowledge timeout option!\n");
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (TftpState == STATE_RRQ || TftpState == STATE_OACK) {
|
||
|
|
/* first block received */
|
||
|
|
TftpState = STATE_DATA;
|
||
|
|
TftpServerPort = src;
|
||
|
|
TftpLastBlock = 0;
|
||
|
|
TftpBlockWrap = 0;
|
||
|
|
TftpBlockWrapOffset = 0;
|
||
|
|
|
||
|
|
if (TftpBlock != 1) { /* Assertion */
|
||
|
|
printf ("\nTFTP error: "
|
||
|
|
"First block is not block 1 (%ld)\n"
|
||
|
|
"Starting again\n\n",
|
||
|
|
TftpBlock);
|
||
|
|
NetStartAgain ();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (TftpBlock == TftpLastBlock) {
|
||
|
|
/*
|
||
|
|
* Same block again; ignore it.
|
||
|
|
*/
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
TftpLastBlock = TftpBlock;
|
||
|
|
NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
|
||
|
|
|
||
|
|
store_block (TftpBlock - 1, pkt + 2, len);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Acknoledge the block just received, which will prompt
|
||
|
|
* the server for the next one.
|
||
|
|
*/
|
||
|
|
TftpSend ();
|
||
|
|
|
||
|
|
if (len < TFTP_BLOCK_SIZE) {
|
||
|
|
/*
|
||
|
|
* We received the whole thing. Try to
|
||
|
|
* run it.
|
||
|
|
*/
|
||
|
|
puts ("\ndone\n");
|
||
|
|
NetState = NETLOOP_SUCCESS;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case TFTP_ERROR:
|
||
|
|
printf ("\nTFTP error: '%s' (%d)\n",
|
||
|
|
pkt + 2, ntohs(*(ushort *)pkt));
|
||
|
|
puts ("Starting again\n\n");
|
||
|
|
NetStartAgain ();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void
|
||
|
|
TftpTimeout (void)
|
||
|
|
{
|
||
|
|
if (++TftpTimeoutCount > TIMEOUT_COUNT) {
|
||
|
|
puts ("\nRetry count exceeded; starting again\n");
|
||
|
|
NetStartAgain ();
|
||
|
|
} else {
|
||
|
|
puts ("T ");
|
||
|
|
NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
|
||
|
|
TftpSend ();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void
|
||
|
|
TftpStart (void)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_TFTP_PORT
|
||
|
|
char *ep; /* Environment pointer */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (BootFile[0] == '\0') {
|
||
|
|
sprintf(default_filename, "%02lX%02lX%02lX%02lX.img",
|
||
|
|
NetOurIP & 0xFF,
|
||
|
|
(NetOurIP >> 8) & 0xFF,
|
||
|
|
(NetOurIP >> 16) & 0xFF,
|
||
|
|
(NetOurIP >> 24) & 0xFF );
|
||
|
|
tftp_filename = default_filename;
|
||
|
|
|
||
|
|
printf ("*** Warning: no boot file name; using '%s'\n",
|
||
|
|
tftp_filename);
|
||
|
|
} else {
|
||
|
|
tftp_filename = BootFile;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(CONFIG_NET_MULTI)
|
||
|
|
printf ("Using %s device\n", eth_get_name());
|
||
|
|
#endif
|
||
|
|
puts ("TFTP from server "); print_IPaddr (NetServerIP);
|
||
|
|
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'.", tftp_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);
|
||
|
|
|
||
|
|
puts ("Loading: *\b");
|
||
|
|
|
||
|
|
NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
|
||
|
|
NetSetHandler (TftpHandler);
|
||
|
|
|
||
|
|
TftpServerPort = WELL_KNOWN_PORT;
|
||
|
|
TftpTimeoutCount = 0;
|
||
|
|
TftpState = STATE_RRQ;
|
||
|
|
/* Use a pseudo-random port unless a specific port is set */
|
||
|
|
TftpOurPort = 1024 + (get_timer(0) % 3072);
|
||
|
|
#ifdef CONFIG_TFTP_PORT
|
||
|
|
if ((ep = getenv("tftpdstp")) != NULL) {
|
||
|
|
TftpServerPort = simple_strtol(ep, NULL, 10);
|
||
|
|
}
|
||
|
|
if ((ep = getenv("tftpsrcp")) != NULL) {
|
||
|
|
TftpOurPort= simple_strtol(ep, NULL, 10);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
TftpBlock = 0;
|
||
|
|
|
||
|
|
/* zero out server ether in case the server ip has changed */
|
||
|
|
memset(NetServerEther, 0, 6);
|
||
|
|
|
||
|
|
TftpSend ();
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* CFG_CMD_NET */
|