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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [services/] [tftp.c] - Rev 246
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/* * Copyright 1994, 1995, 2000 Neil Russell. * (See License) * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de */ #include "common.h" #include "support.h" #include "net.h" #include "tftp.h" #include "bootp.h" #define WELL_KNOWN_PORT 69 /* Well known TFTP port # */ #define TIMEOUT 2 /* Seconds to timeout for a lost pkt */ #define TIMEOUT_COUNT 10 /* # of timeouts before giving up */ /* (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 static int TftpServerPort; /* The UDP port at their end */ static int TftpOurPort; /* The UDP port at our end */ static int TftpTimeoutCount; static unsigned TftpBlock; static unsigned TftpLastBlock; static int TftpState; #define STATE_RRQ 1 #define STATE_DATA 2 #define STATE_TOO_LARGE 3 #define STATE_BAD_MAGIC 4 char *tftp_filename; // running TFTP CRC value unsigned long TFTP_CHKSUM; #ifdef CFG_DIRECT_FLASH_TFTP extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; #endif static __inline__ void store_block (unsigned block, unsigned char * src, unsigned len) { unsigned long offset = block * 512, 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 (global.src_addr + offset >= flash_info[i].start[0]) { rc = 1; break; } } if (rc) { /* Flash is destination for this packet */ rc = flash_write ((unsigned char *)src, (unsigned long)(global.src_addr+offset), len); switch (rc) { case 0: /* OK */ break; case 1: printf ("Timeout writing to Flash\n"); break; case 2: printf ("Flash not Erased\n"); break; case 4: printf ("Can't write to protected Flash sectors\n"); break; case 8: printf ("Outside available Flash\n"); break; case 16:printf ("Size must be aligned (multiple of 8?)\n"); break; default: printf ("%s[%d] FIXME: rc=%d\n",__FILE__,__LINE__,rc); break; } if (rc) { NetState = NETLOOP_FAIL; return; } } else #endif /* CFG_DIRECT_FLASH_TFTP */ //#define QUICK_ETHPACKET_COPY #ifdef QUICK_ETHPACKET_COPY { unsigned char * dst = (unsigned char*)(global.src_addr + offset); //printf("quick ethpacket copy: src: 0x%x dst: 0x%x, len: %d\n",(unsigned long)src, (unsigned long)dst, len); // First, align the destination address so we can copy words // If either src or dst are not word aligned, then we will never // be able to do word copies while((len) && ((((unsigned long)dst) & 0x3) || (((unsigned long)src) & 0x3))) { // printf("bc: src: 0x%x dst: 0x%x, len: %d\n",(unsigned long)src, (unsigned long)dst, len); dst[0] = src[0]; len--; dst++; src++; } unsigned long *wdst, *wsrc; wdst = (unsigned long*) dst; wsrc = (unsigned long*) src; while(len >= 4) { //printf("wc: src: 0x%x dst: 0x%x, len: %d\n",(unsigned long)src, (unsigned long)dst, len); wdst[0] = wsrc[0]; wdst++; wsrc++; len -= 4; dst+=4; src+=4; } while (len) { //printf("cu: src: 0x%x dst: 0x%x, len: %d\n",(unsigned long)src, (unsigned long)dst, len); dst[0] = src[0]; len--; dst++; src++; } } #else #ifdef TFTP_CALC_CRC // Call special memcpy that calculates CRC for us: TFTP_CHKSUM += memcpy_crc((void *)(global.src_addr + offset), src, len); #else // Standard memcpy: (void)memcpy((void *)(global.src_addr + offset), src, len); #endif #endif if (NetBootFileXferSize < newsize) NetBootFileXferSize = newsize; } static void TftpSend (void); static void TftpTimeout (void); /**********************************************************************/ static void TftpSend (void) { volatile unsigned char * pkt; volatile unsigned char * xp; int len = 0; #ifdef ET_DEBUG printf("TftpSend: %d\n", TftpState); #endif /* * We will always be sending some sort of packet, so * cobble together the packet headers now. */ pkt = NetTxPacket + ETHER_HDR_SIZE + IP_HDR_SIZE; switch (TftpState) { case STATE_RRQ: xp = pkt; (*((unsigned short *)pkt)) = SWAP16c(TFTP_RRQ); pkt += sizeof(short); strcpy ((char *)pkt, tftp_filename); pkt += strlen(tftp_filename) + 1; strcpy ((char *)pkt, "octet"); pkt += 5 /*strlen("octet")*/ + 1; len = pkt - xp; break; case STATE_DATA: xp = pkt; *((unsigned short *)pkt) = SWAP16c(TFTP_ACK); pkt += sizeof(short); *((unsigned short *)pkt) = SWAP16(TftpBlock); pkt += sizeof(short); len = pkt - xp; break; case STATE_TOO_LARGE: xp = pkt; *((unsigned short *)pkt) = SWAP16c(TFTP_ERROR); pkt += sizeof(short); *((unsigned short *)pkt) = SWAP16(3); pkt += sizeof(short); strcpy ((char *)pkt, "File too large"); pkt += 14 /*strlen("File too large")*/ + 1; len = pkt - xp; break; case STATE_BAD_MAGIC: xp = pkt; *((unsigned short *)pkt) = SWAP16c(TFTP_ERROR); pkt += sizeof(short); *((unsigned short *)pkt) = SWAP16(2); pkt += sizeof(short); strcpy ((char *)pkt, "File has bad magic"); pkt += 18 /*strlen("File has bad magic")*/ + 1; len = pkt - xp; break; } NetSetEther (NetTxPacket, NetServerEther, PROT_IP); NetSetIP (NetTxPacket + ETHER_HDR_SIZE, NetServerIP, TftpServerPort, TftpOurPort, len); NetSendPacket (NetTxPacket, ETHER_HDR_SIZE + IP_HDR_SIZE + len); } static void TftpHandler (unsigned char * pkt, unsigned dest, unsigned src, unsigned len) { #ifdef ET_DEBUG // printf("TftpHandler\n"); #endif if (dest != TftpOurPort) { return; } if (TftpState != STATE_RRQ && src != TftpServerPort) { return; } if (len < 2) { return; } len -= 2; switch (SWAP16(*((unsigned short *)pkt))) { case TFTP_RRQ: case TFTP_WRQ: case TFTP_ACK: pkt += sizeof(short); break; default: break; case TFTP_DATA: pkt += sizeof(short); if (len < 2) return; len -= 2; TftpBlock = SWAP16(*(unsigned short *)pkt); if (((TftpBlock - 1) % 10) == 0) { putc ('#'); TftpTimeoutCount = 0; } else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) { printf ("\n\t "); } if (TftpState == STATE_RRQ) { TftpState = STATE_DATA; TftpServerPort = src; TftpLastBlock = 0; if (TftpBlock != 1) { /* Assertion */ printf ("\nTFTP error: " "First block is not block 1 (%d)\n" "Starting again\n\n", TftpBlock); NetStartAgain (); break; } } if (TftpBlock == TftpLastBlock) { /* * Same block again; resend ack (maybe got lost last time) */ TftpSend (); break; } else { TftpLastBlock = TftpBlock; NetSetTimeout (TIMEOUT * TICKS_PER_SEC, 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 < 512) { /* * We received the whole thing. Try to * run it. */ printf ("\ndone\n"); NetState = NETLOOP_SUCCESS; } break; case TFTP_ERROR: pkt += sizeof(short); printf ("\nTFTP error: '%s' (%d)\n", pkt + 2, SWAP16(*(unsigned short *)pkt)); printf ("Starting again\n\n"); NetStartAgain (); break; } } static void TftpTimeout (void) { if (++TftpTimeoutCount >= TIMEOUT_COUNT) { printf ("\nRetry count exceeded; starting again\n"); NetStartAgain (); } else { printf ("T "); NetSetTimeout (TIMEOUT * TICKS_PER_SEC, TftpTimeout); TftpSend (); } } void TftpStart (void) { #ifdef ET_DEBUG printf ("\nServer ethernet address %02x:%02x:%02x:%02x:%02x:%02x\n", NetServerEther[0], NetServerEther[1], NetServerEther[2], NetServerEther[3], NetServerEther[4], NetServerEther[5] ); #endif /* DEBUG */ TFTP_CHKSUM = 0; // Reset checksum printf ("TFTP from server "); print_IPaddr (NetServerIP); printf ("; 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) { printf ("; sending through gateway "); print_IPaddr (NetOurGatewayIP) ; } } putc ('\n'); printf ("Filename '%s'.", tftp_filename); if (NetBootFileSize) { printf (" Size is %d%s kB => %x Bytes", NetBootFileSize/2, (NetBootFileSize%2) ? ".5" : "", NetBootFileSize<<9); } putc ('\n'); printf ("Load address: 0x%lx\n", global.src_addr); printf ("Loading: *\b"); NetSetTimeout (TIMEOUT * TICKS_PER_SEC, TftpTimeout); NetSetHandler (TftpHandler); TftpServerPort = WELL_KNOWN_PORT; TftpTimeoutCount = 0; TftpState = STATE_RRQ; TftpOurPort = 1024 + (get_timer(0) % 3072); TftpSend (); }
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