betty/lpcload.c

   1 /*
   2  * lpcload.c - load firmware into ram of lpc2220 via uart0
   3  *
   4  * author: hackbard@hackdaworld.org, rolf.anders@physik.uni-augsburg.de
   5  *
   6  * build: make
   7  * usage: sudo ./lpcload -d /dev/ttyS0 -f firmware.hex -D0 fw0.bin [-v]
   8  */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <unistd.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16 #include <fcntl.h>
  17 #include <termios.h>
  18
  19 #define VERBOSE                 (1<<0)
  20 #define FIRMWARE                (1<<1)
  21 #define BANK0                   (1<<2)
  22 #define BANK2                   (1<<3)
  23 #define BL                      (1<<4)
  24 #define FLASHFW                 (1<<5)
  25 #define BINARY                  (1<<6)
  26
  27 #define BANK0_ADDR              0x80000000
  28 #define BANK2_ADDR              0x82000000
  29 #define BANK_SIZE               0x00100000
  30 #define BL_ADDR                 0x7fffe000
  31 #define BL_SIZE                 0x00002000
  32
  33 #define CMD_READ                'R'             // stay compatible to fwflash!
  34 #define CMD_WRITE               'W'
  35 #define CMD_CHIP_ERASE          'E'
  36
  37 #define TXRX_TYPE_SYNC          0x00
  38 #define TXRX_TYPE_CKSM          0x00
  39 #define TXRX_TYPE_BAUD          0x01
  40 #define TXRX_TYPE_CMD           0x02
  41 #define TXRX_TYPE_DATA          0x03
  42 #define TXRX_TYPE_GO            0x04
  43
  44 #define CMD_SUCCESS             "0\r\n"
  45 #define INVALID_COMMAND         "1\r\n"
  46 #define SRC_ADDR_ERROR          "2\r\n"
  47 #define DST_ADDR_ERROR          "3\r\n"
  48 #define SRC_ADDR_NOT_MAPPED     "4\r\n"
  49 #define DST_ADDR_NOT_MAPPED     "5\r\n"
  50 #define COUNT_ERROR             "6\r\n"
  51 #define COMPARE_ERROR           "10\r\n"
  52 #define BUSY                    "11\r\n"
  53 #define PARAM_ERROR             "12\r\n"
  54 #define ADDR_ERROR              "13\r\n"
  55 #define ADDR_NOT_MAPPED         "14\r\n"
  56 #define CMD_LOCKED              "15\r\n"
  57 #define INVALID_CODE            "16\r\n"
  58 #define INVALID_BAUD_RATE       "17\r\n"
  59 #define INVALID_STOP_BIT        "18\r\n"
  60
  61 #define RAM                     0x01
  62 #define FLASH                   0x02
  63
  64 #define CRYSTFREQ               "10000"
  65 #define RAMOFFSET               0x40000200
  66
  67 #define BUFSIZE                 128
  68
  69 typedef unsigned char u8;
  70 typedef unsigned short u16;
  71 typedef unsigned int u32;
  72
  73 typedef struct s_lpc {
  74         int sfd;                /* serial fd */
  75         char sdev[128];         /* seriel device */
  76         int fwfd;               /* fimrware fd */
  77         char fwfile[128];       /* firmware file */
  78         u32 info;               /* info/mode */
  79         char freq[8];           /* frequency */
  80         char bank0[127];        /* flash dump bank0 */
  81         int b0fd;               /* dumpfile fd bank0 */
  82         char bank2[127];        /* flash dump bank2 */
  83         int b2fd;               /* dumpfile fd bank0 */
  84         char bl[127];           /* flash dump bootloader */
  85         int blfd;               /* dumpfile fd bootloader */
  86         char ffwfile[127];      /* file with firmware to be flashed */
  87         int ffwfd;              /* fd of the above */
  88         u32 roff;               /* ram offset of uc */
  89         u32 jaddr;              /* addr for the jump */
  90 } t_lpc;
  91
  92 void usage(void) {
  93
  94         printf("possible argv:\n");
  95         printf("  -d  <serial device>\n");
  96         printf("  -f  <firmware>\n");
  97         printf("  -c  <crystal freq>\n");
  98         printf("  -Dx <filename>\n");
  99         printf("      x=0: bank0, x=2: bank2, x=b: bootloader\n");
 100         printf("  -w <firmware which goes to flash>\n");
 101         printf("  -b (if firmware for flash is a binary)\n");
 102         printf("  -v\n");
 103
 104 }
 105
 106 int open_serial_device(t_lpc *lpc) {
 107
 108         struct termios term;
 109
 110         //memset(&term,0,sizeof(struct termios));
 111
 112         /* open serial device */
 113
 114         lpc->sfd=open(lpc->sdev,O_RDWR);
 115         if(lpc->sfd<0) {
 116                 perror("tts open");
 117                 return lpc->sfd;
 118         }
 119
 120         /* configure the serial device */
 121
 122         tcgetattr(lpc->sfd,&term);
 123
 124         // input/output baudrate
 125
 126         cfsetispeed(&term,B38400);
 127         cfsetospeed(&term,B38400);
 128
 129         // control options -> 8n1
 130
 131         term.c_cflag&=~PARENB;  // no parity
 132         term.c_cflag&=~CSTOPB;  // only 1 stop bit
 133         term.c_cflag&=~CSIZE;   // no bit mask for data bits
 134         term.c_cflag|=CS8;      // 8 data bits
 135
 136         // line options -> raw input
 137
 138         term.c_lflag&=~(ICANON|ECHO|ECHOE|ISIG);
 139
 140         // input options -> enable flow control
 141
 142         term.c_iflag&=~(INLCR|ICRNL|IXANY);
 143         term.c_iflag|=(IXON|IXOFF);
 144
 145         // output options
 146
 147         term.c_oflag=0;
 148
 149         // more control options -> timeout / flow control
 150
 151         term.c_cc[VMIN]=0;
 152         term.c_cc[VTIME]=20;    // 2 seconds timeout
 153         //term.c_cc[VSTART]=0x11;
 154         //term.c_cc[VSTOP]=0x13;
 155
 156         tcsetattr(lpc->sfd,TCSANOW,&term);
 157
 158         return lpc->sfd;
 159 }
 160
 161 int reconfig_serial_device(t_lpc *lpc) {
 162
 163         struct termios term;
 164         int ret;
 165
 166         /* reconfigure the serial device for our lousy loader tool */
 167
 168         tcgetattr(lpc->sfd,&term);
 169
 170         // disable flow control
 171
 172         term.c_iflag&=~(IXON|IXOFF|IXANY|INLCR|ICRNL);
 173
 174         // change baudrate
 175
 176         cfsetispeed(&term,B115200);
 177         cfsetospeed(&term,B115200);
 178
 179         // timeouts
 180
 181         term.c_cc[VMIN]=0;
 182         term.c_cc[VTIME]=100;   // 10 seconds timeout
 183
 184         ret=tcsetattr(lpc->sfd,TCSANOW,&term);
 185
 186         return ret;
 187 }
 188
 189 int open_firmware(t_lpc *lpc) {
 190
 191         /* open firmware file */
 192
 193         lpc->fwfd=open(lpc->fwfile,O_RDONLY);
 194
 195         if(lpc->fwfd<0) {
 196                 perror("fw open");
 197                 return lpc->fwfd;
 198         }
 199
 200         if(lpc->info&FLASHFW) {
 201                 lpc->ffwfd=open(lpc->ffwfile,O_RDONLY);
 202                 if(lpc->ffwfd<0) {
 203                         perror("ffw open");
 204                         return lpc->ffwfd;
 205                 }
 206         }
 207
 208         return lpc->fwfd;
 209 }
 210
 211 int open_dumpfiles(t_lpc *lpc) {
 212
 213         /* open dumpfiles */
 214
 215         if(lpc->info&BANK0) {
 216                 lpc->b0fd=open(lpc->bank0,O_WRONLY|O_CREAT);
 217                 if(lpc->b0fd<0) {
 218                         perror("bank0 dump file open");
 219                         return lpc->b0fd;
 220                 }
 221         }
 222
 223         if(lpc->info&BANK2) {
 224                 lpc->b2fd=open(lpc->bank2,O_WRONLY|O_CREAT);
 225                 if(lpc->b2fd<0) {
 226                         perror("bank2 dump file open");
 227                         return lpc->b2fd;
 228                 }
 229         }
 230
 231         if(lpc->info&BL) {
 232                 lpc->blfd=open(lpc->bl,O_WRONLY|O_CREAT);
 233                 if(lpc->blfd<0) {
 234                         perror("bootloader dump file open");
 235                         return lpc->blfd;
 236                 }
 237         }
 238
 239         return 0;
 240
 241 }
 242 int txrx(t_lpc *lpc,char *buf,int len,u8 type) {
 243
 244         int ret,cnt;
 245         int i;
 246
 247         /* write */
 248
 249         if(lpc->info&VERBOSE)
 250                 printf("  >> ");
 251         cnt=0;
 252         while(len) {
 253                 ret=write(lpc->sfd,buf+cnt,len);
 254                 if(ret<0) {
 255                         perror("txrx write");
 256                         return ret;
 257                 }
 258                 if(lpc->info&VERBOSE)
 259                         for(i=0;i<ret;i++)
 260                                 printf("%c",
 261                                        ((buf[cnt+i]>0x19)&(buf[cnt+i]<0x7f))?
 262                                        buf[cnt+i]:'.');
 263                 len-=ret;
 264                 cnt+=ret;
 265         }
 266         if(lpc->info&VERBOSE) {
 267                 printf(" | ");
 268                 for(i=0;i<cnt;i++)
 269                         printf("%02x ",buf[i]);
 270                 printf("| (%d)\n",cnt);
 271         }
 272
 273
 274
 275         /* cut the echo if not of type auto baud */
 276
 277         if(type!=TXRX_TYPE_BAUD) {
 278                 while(cnt) {
 279                         ret=read(lpc->sfd,buf,cnt);
 280                         if(ret<0) {
 281                                 perror("txrx echo cut");
 282                                 return ret;
 283                         }
 284                         cnt-=ret;
 285                 }
 286         }
 287
 288         /* return if type is go */
 289
 290         if(type==TXRX_TYPE_GO)
 291                 return cnt;
 292
 293         /* return here if type is data */
 294
 295         if(type==TXRX_TYPE_DATA)
 296                 return cnt;
 297
 298         /* read */
 299
 300         ret=read(lpc->sfd,buf,1);
 301         if(ret<0) {
 302                 perror("txrx read (first byte)");
 303                 return ret;
 304         }
 305
 306         switch(buf[0]) {
 307                 case 'S':
 308                         cnt=13;
 309                         break;
 310                 case 'O':
 311                         cnt=3;
 312                         break;
 313                 case 'R':
 314                         cnt=7;
 315                         break;
 316                 case '0':
 317                         cnt=2;
 318                         break;
 319                 default:
 320                         printf("txrx read: bad return byte '%02x'\n",buf[0]);
 321                         break;
 322         }
 323
 324         ret=1;
 325         i=cnt;
 326         while(i) {
 327                 ret=read(lpc->sfd,buf+1+cnt-i,i);
 328                 if(ret<0) {
 329                         perror("txrx read (next bytes)");
 330                         return ret;
 331                 }
 332                 i-=ret;
 333         }
 334         if(lpc->info&VERBOSE) {
 335                 printf("  << ");
 336                 for(i=0;i<cnt+1;i++)
 337                         printf("%c",((buf[i]>0x19)&(buf[i]<0x7f))?
 338                                     buf[i]:'.');
 339                 printf(" | ");
 340                 for(i=0;i<cnt+1;i++)
 341                         printf("%02x ",buf[i]);
 342                 printf("| (%d)\n",cnt+1);
 343         }
 344         buf[cnt+1]='\0';
 345
 346         /* check/strip return code if type is cmd */
 347
 348         if(type==TXRX_TYPE_CMD) {
 349                 ret=strlen(CMD_SUCCESS);
 350                 if(!strncmp(buf,CMD_SUCCESS,ret)) {
 351                         for(i=ret;i<cnt;i++)
 352                                 buf[i-ret]=buf[i];
 353                         buf[cnt]='\0';
 354                 }
 355                 else {
 356                         printf("txrx bad return code!\n");
 357                         return -1;
 358                 }
 359         }
 360
 361         return cnt;
 362 }
 363
 364 int bl_init(t_lpc *lpc) {
 365
 366         char buf[BUFSIZE];
 367         int len;
 368
 369         /* auto baud sequence */
 370         buf[0]='?';
 371         txrx(lpc,buf,1,TXRX_TYPE_BAUD);
 372         if(strncmp(buf,"Synchronized\r\n",14)) {
 373                 printf("auto baud detection failed\n");
 374                 return -1;
 375         }
 376
 377         /* tell bl that we are synchronized (it's allready in buf) */
 378         txrx(lpc,buf,14,TXRX_TYPE_SYNC);
 379         if(strncmp(buf,"OK\r\n",4)) {
 380                 printf("sync failed\n");
 381                 return -1;
 382         }
 383
 384         /* tell bl the crystal frequency */
 385         len=strlen(lpc->freq)+2;
 386         strncpy(buf,lpc->freq,BUFSIZE);
 387         buf[len-2]='\r';
 388         buf[len-1]='\n';
 389         txrx(lpc,buf,len,TXRX_TYPE_SYNC);
 390         if(strncmp(buf,"OK\r\n",4)) {
 391                 printf("freq set failed\n");
 392                 return -1;
 393         }
 394
 395         return 0;
 396 }
 397
 398 int unlock_go(t_lpc *lpc) {
 399
 400         char buf[BUFSIZE];
 401         int ret;
 402
 403         memcpy(buf,"U 23130\r\n",9);
 404         ret=txrx(lpc,buf,9,TXRX_TYPE_CMD);
 405
 406         return ret;
 407 }
 408
 409 int go(t_lpc *lpc) {
 410
 411         char buf[BUFSIZE];
 412         int ret,len;
 413
 414         snprintf(buf,BUFSIZE,"G %d A\r\n",lpc->jaddr);
 415         len=strlen(buf);
 416         ret=txrx(lpc,buf,len,TXRX_TYPE_GO);
 417
 418         return ret;
 419 }
 420
 421 int uuencode(u8 *in,u8 *out,int len) {
 422
 423         out[0]=0x20+len;
 424         out[1]=0x20+((in[0]>>2)&0x3f);
 425         out[2]=0x20+(((in[0]<<4)|(in[1]>>4))&0x3f);
 426         out[3]=0x20+(((in[1]<<2)|(in[2]>>6))&0x3f);
 427         out[4]=0x20+(in[2]&0x3f);
 428
 429         return 0;
 430 }
 431
 432 int write_to_ram(t_lpc *lpc,char *buf,u32 addr,int len) {
 433
 434         int lcount;
 435         u32 checksum;
 436         char txrxbuf[BUFSIZE];
 437         int count,bcnt;
 438         int nlen,slen;
 439         int i;
 440
 441         /* check length */
 442         if(len%4) {
 443                 printf("ram write: not a multiple of 4\n");
 444                 return -1;
 445         }
 446
 447         /* make it a multiple of 3 (reason: uuencode) */
 448         nlen=(!(len%3))?len:((len/3+1)*3);
 449         if(nlen>BUFSIZE) {
 450                 printf("ram write: too much data\n");
 451                 return -1;
 452         }
 453         for(i=len;i<nlen;i++) buf[i]=0;
 454
 455         /* prepare addr */
 456         addr+=lpc->roff;
 457
 458         /* prepare write command */
 459         if(lpc->info&VERBOSE)
 460                 printf("writing 0x%02x bytes to 0x%08x\n",len,addr);
 461         snprintf(txrxbuf,BUFSIZE,"W %d %d\r\n",addr,len);
 462         slen=strlen(txrxbuf);
 463
 464         /* send command and check return code */
 465         txrx(lpc,txrxbuf,slen,TXRX_TYPE_CMD);
 466
 467         /* send data */
 468         lcount=0;
 469         bcnt=0;
 470         count=0;
 471         checksum=0;
 472         while(bcnt<nlen) {
 473
 474                 /* uuencode / prepare data bytes */
 475                 uuencode((u8 *)(buf+bcnt),(u8 *)(txrxbuf),
 476                          (bcnt==nlen-3)?(len%3?len%3:3):3);
 477                 txrxbuf[5]='\r';
 478                 txrxbuf[6]='\n';
 479
 480                 /* checksum */
 481                 checksum+=((u8)buf[bcnt]+(u8)buf[bcnt+1]+(u8)buf[bcnt+2]);
 482
 483                 /* send a data line */
 484                 txrx(lpc,txrxbuf,7,TXRX_TYPE_DATA);
 485
 486                 /* increase counters */
 487                 lcount+=1;
 488                 bcnt+=3;
 489                 count+=3;
 490
 491                 /* checksum */
 492                 if((!(lcount%20))|(bcnt==nlen)) {
 493                         /* send backtick */
 494                         memcpy(txrxbuf,"`\r\n",3);
 495                         //txrx(lpc,txrxbuf,3,TXRX_TYPE_DATA);
 496                         /* send checksum */
 497                         snprintf(txrxbuf,BUFSIZE,"%d\r\n",checksum);
 498                         slen=strlen(txrxbuf);
 499                         txrx(lpc,txrxbuf,slen,TXRX_TYPE_CKSM);
 500                         if(!strncmp(txrxbuf,"RESE",4)) {
 501                                 read(lpc->sfd,txrxbuf+4,4);
 502                                 printf("ram write: resending ...\n");
 503                                 bcnt-=count;
 504                         }
 505                         if(strncmp(txrxbuf,"OK\r\n",4)) {
 506                                 printf("ram write: bad response\n");
 507                                 return -1;
 508                         }
 509                         /* reset checksum & counter */
 510                         checksum=0;
 511                         count=0;
 512                 }
 513
 514         }
 515
 516         return 0;
 517 }
 518
 519 int send_cmd(int sfd,u32 addr,u32 len,u8 cmd) {
 520
 521         int ret,i,cnt,size;
 522         int as,ls;
 523         u8 send[9];
 524
 525         switch(cmd) {
 526                 case CMD_READ:
 527                 case CMD_WRITE:
 528                         as=4;
 529                         ls=4;
 530                         break;
 531                 case CMD_CHIP_ERASE:
 532                         as=0;
 533                         ls=1;
 534                         break;
 535                 default:
 536                         printf("send cmd: cmd '%02x' not supported\n",cmd);
 537                         return -1;
 538         }
 539
 540         size=1+as+ls;
 541         send[0]=cmd;
 542
 543         for(i=0;i<as;i++)
 544                 send[1+i]=(addr>>((as-1-i)*8))&0xff;
 545         for(i=0;i<ls;i++)
 546                 send[1+i+as]=(len>>((ls-1-i)*8))&0xff;
 547
 548         cnt=0;
 549         while(size) {
 550                 ret=write(sfd,send+cnt,size);
 551                 if(ret<0) {
 552                         perror("dump file: send cmd ");
 553                         return ret;
 554                 }
 555                 size-=ret;
 556                 cnt+=ret;
 557         }
 558
 559         /* flush  */
 560         tcflush(sfd,TCIOFLUSH);
 561
 562         return 0;
 563 }
 564
 565 int write_to_flash(t_lpc *lpc,u8 *buf,u32 addr,int len) {
 566
 567         int cnt,ret;
 568         u8 cksml,cksmr;
 569         int i;
 570
 571         /* prepare addr */
 572         addr+=lpc->roff;
 573
 574         /* send cmd */
 575         send_cmd(lpc->sfd,addr,len,CMD_WRITE);
 576
 577         /* transfer data */
 578         cnt=0;
 579         cksml=0;
 580         while(len) {
 581                 ret=write(lpc->sfd,buf+cnt,len);
 582                 if(ret<0) {
 583                         perror("transmit flash content (w)");
 584                         return ret;
 585                 }
 586                 for(i=cnt;i<cnt+ret;i++)
 587                         cksml+=buf[i];
 588                 len-=ret;
 589                 cnt+=ret;
 590         }
 591
 592
 593         /* check ack */
 594         while(1) {
 595                 ret=read(lpc->sfd,&cksmr,1);
 596                 if(ret<0) {
 597                         perror("write to flash: read cksm");
 598                         return ret;
 599                 }
 600                 if(ret==1) break;
 601         }
 602         if(cksml!=cksmr) {
 603                 printf("FATAL: wrong checksum or failure in flash write!\n");
 604                 if(cksml+1==cksmr)
 605                         printf(" -> most probably due to flash write!\n");
 606                 else
 607                         printf(" -> most probably failure in transfer!\n");
 608                 printf(" addr:0x%08x l:%02x r:%02x\n",addr,cksml,cksmr);
 609         }
 610
 611         return 0;
 612 }
 613
 614 int firmware_to_mem(t_lpc *lpc,u8 memtype) {
 615
 616         char buf[BUFSIZE];
 617         u32 addr,len,type;
 618         int ret,temp;
 619         int fd;
 620
 621         /* prepare for memory type */
 622         if(memtype==RAM)
 623                 fd=lpc->fwfd;
 624         else if(memtype==FLASH)
 625                 fd=lpc->ffwfd;
 626         else
 627                 return -1;
 628
 629         /* another evil hack to support binary format */
 630         if((lpc->info&BINARY)&&(memtype==FLASH)) {
 631                 addr=0;
 632                 ret=1;
 633                 while(ret) {
 634                         ret=read(fd,buf,16);
 635                         if(ret!=16) {
 636                                 printf("D'OH ...\n");
 637                                 return -1;
 638                         }
 639                         buf[16]='s'; // skip
 640                         for(temp=0;temp<16;temp++)
 641                                 if((u8)buf[temp]!=0xff)
 642                                         buf[16]='w'; // write
 643                         printf("addr:%08x\r",addr+lpc->roff);
 644                         fflush(stdout);
 645                         if(buf[16]=='w')
 646                                 write_to_flash(lpc,(u8 *)buf,addr,16);
 647                         addr+=16;
 648                 }
 649                 return 0;
 650         }
 651
 652         /* read a line */
 653         ret=1;
 654         while(ret) {
 655                 /* sync line */
 656                 ret=read(fd,buf,1);
 657                 switch(buf[0]) {
 658                         case '\r':
 659                                 continue;
 660                         case '\n':
 661                                 continue;
 662                         case ':':
 663                                 /* start code */
 664                                 break;
 665                         default:
 666                                 printf("fw to mem: no ihex format\n");
 667                                 return -1;
 668                 }
 669                 /* read len */
 670                 ret=read(fd,buf,2);
 671                 sscanf(buf,"%02x",&len);
 672                 /* read addr */
 673                 ret=read(fd,buf,4);
 674                 sscanf(buf,"%04x",&addr);
 675                 /* read type */
 676                 ret=read(fd,buf,2);
 677                 sscanf(buf,"%02x",&type);
 678                 /* successfull return if type is end of file */
 679                 if(type==0x01)
 680                         return 0;
 681                 /* read data (and cksum) */
 682                 ret=read(fd,buf,2*(len+1));
 683                 if(ret!=(2*(len+1))) {
 684                         printf("fw to mem: data missing\n");
 685                                 return -1;
 686                 }
 687                 for(ret=0;ret<len;ret++) {
 688                         sscanf(buf+2*ret,"%02x",&temp);
 689                         buf[ret]=temp;
 690                 }
 691                 /* act according to type */
 692                 switch(type) {
 693                         //case 0x03:
 694                         //      /* get cs and ip */
 695                         //      break;
 696                         case 0x00:
 697                                 if(len%4) {
 698                                         printf("fw to mem: invalid len\n");
 699                                         return -1;
 700                                 }
 701                                 if(memtype==RAM)
 702                                         write_to_ram(lpc,buf,addr,len);
 703                                 else
 704                                         write_to_flash(lpc,(u8 *)buf,addr,len);
 705                                 break;
 706                         case 0x04:
 707                                 lpc->roff=((buf[0]<<24)|(buf[1]<<16));
 708                                 break;
 709                         case 0x05:
 710                                 lpc->jaddr=((buf[0]<<24)|(buf[1]<<16));
 711                                 lpc->jaddr|=((buf[2]<<8)|buf[3]);
 712                                 break;
 713                         default:
 714                                 printf("fw to mem: unknown type %02x\n",type);
 715                                 return -1;
 716                 }
 717         }
 718
 719         return 0;
 720 }
 721
 722 int lpc_txbuf_flush(t_lpc *lpc) {
 723
 724         int i,ret;
 725         u8 buf[16];
 726
 727         ret=1;
 728         printf("flushing lpc tx buffer: ");
 729         while(ret) {
 730                 ret=read(lpc->sfd,buf,16);
 731                 for(i=0;i<ret;i++)
 732                         printf("%02x ",buf[i]);
 733         }
 734         printf("\n");
 735
 736         return 0;
 737 }
 738
 739 int dump_files(int sfd,int dfd,u32 addr,u32 len) {
 740
 741         int ret;
 742         int size;
 743         int cnt;
 744         u8 buf[16];
 745
 746         printf("dumping content (addr=0x%08x, len=0x%08x) ...\n",addr,len);
 747
 748         /* send the cmd */
 749         send_cmd(sfd,addr,len,CMD_READ);
 750
 751         /* receive data and dump it to file */
 752         ret=1;
 753         cnt=0;
 754         printf("  receiving data ...\n");
 755         while(ret) {
 756                 ret=read(sfd,buf,16);
 757                 if(ret<0) {
 758                         perror("dump file: read data");
 759                         return ret;
 760                 }
 761                 size=ret;
 762                 cnt=0;
 763                 while(size) {
 764                         ret=write(dfd,buf+cnt,size-cnt);
 765                         if(ret<0) {
 766                                 perror("dump file: write data");
 767                                 return ret;
 768                         }
 769                         cnt+=ret;
 770                         size-=ret;
 771                 }
 772         }
 773
 774         return 0;
 775 }
 776
 777 int main(int argc,char **argv) {
 778
 779         t_lpc lpc;
 780         int i;
 781         int ret;
 782
 783         /*
 784          * initial ...
 785          */
 786
 787         memset(&lpc,0,sizeof(t_lpc));
 788         strncpy(lpc.freq,CRYSTFREQ,7);
 789         lpc.roff=RAMOFFSET;
 790         lpc.jaddr=RAMOFFSET;
 791
 792         /* parse argv */
 793
 794         for(i=1;i<argc;i++) {
 795
 796                 if(argv[i][0]!='-') {
 797                         usage();
 798                         return -1;
 799                 }
 800
 801                 switch(argv[i][1]) {
 802                         case 'd':
 803                                 strncpy(lpc.sdev,argv[++i],127);
 804                                 break;
 805                         case 'f':
 806                                 strncpy(lpc.fwfile,argv[++i],127);
 807                                 lpc.info|=FIRMWARE;
 808                                 break;
 809                         case 'v':
 810                                 lpc.info|=VERBOSE;
 811                                 break;
 812                         case 'c':
 813                                 strncpy(lpc.freq,argv[++i],7);
 814                                 break;
 815                         case 'D':
 816                                 if(argv[i][2]=='0') {
 817                                         lpc.info|=BANK0;
 818                                         strncpy(lpc.bank0,argv[++i],127);
 819                                         break;
 820                                 }
 821                                 else if(argv[i][2]=='2') {
 822                                         lpc.info|=BANK2;
 823                                         strncpy(lpc.bank2,argv[++i],127);
 824                                         break;
 825                                 }
 826                                 else if(argv[i][2]=='b') {
 827                                         lpc.info|=BL;
 828                                         strncpy(lpc.bl,argv[++i],127);
 829                                         break;
 830                                 }
 831                                 else {
 832                                         usage();
 833                                         return -1;
 834                                 }
 835                         case 'w':
 836                                 strncpy(lpc.ffwfile,argv[++i],127);
 837                                 lpc.info|=FLASHFW;
 838                                 break;
 839                         case 'b':
 840                                 lpc.info|=BINARY;
 841                                 break;
 842                         default:
 843                                 usage();
 844                                 return -1;
 845                 }
 846
 847         }
 848
 849         /* open serial port */
 850         if(open_serial_device(&lpc)<0)
 851                 goto end;
 852
 853         /* boot loader init */
 854         printf("boot loader init ...\n");
 855         if(bl_init(&lpc)<0)
 856                 return -1;
 857
 858         /* quit if there is no hex file to process */
 859         if(!(lpc.info&FIRMWARE)) {
 860                 printf("no firmware -> aborting\n");
 861                 goto end;
 862         }
 863
 864         /* open firmware file */
 865         if(open_firmware(&lpc)<0)
 866                 goto end;
 867
 868         /* open dump files */
 869         if(open_dumpfiles(&lpc)<0)
 870                 goto end;
 871
 872         /* parse intel hex file and write to ram */
 873         printf("write firmware to ram ...\n");
 874         firmware_to_mem(&lpc,RAM);
 875
 876         /* unlock go cmd */
 877         printf("unlock go command ...\n");
 878         unlock_go(&lpc);
 879
 880         /* go! */
 881         printf("go ...\n");
 882         ret=go(&lpc);
 883
 884         /* flush the lpc2220 tx buf */
 885         lpc_txbuf_flush(&lpc);
 886
 887         /* reconfigure the serial port */
 888         if(reconfig_serial_device(&lpc)<0)
 889                 goto end;
 890
 891         /* download flash/bootloader content */
 892         if(lpc.info&BANK0)
 893                 dump_files(lpc.sfd,lpc.b0fd,BANK0_ADDR,BANK_SIZE);
 894         if(lpc.info&BANK2)
 895                 dump_files(lpc.sfd,lpc.b2fd,BANK2_ADDR,BANK_SIZE);
 896         if(lpc.info&BL)
 897                 dump_files(lpc.sfd,lpc.blfd,BL_ADDR,BL_SIZE);
 898
 899         /* write a firmware to the lpc flash */
 900         if(lpc.info&FLASHFW) {
 901                 printf("writing firmware to flash ...\n");
 902                 send_cmd(lpc.sfd,0,'0',CMD_CHIP_ERASE);
 903                 /* ack */
 904                 ret=0;
 905                 while(!ret)
 906                         read(lpc.sfd,&ret,1);
 907                 lpc.roff=BANK0_ADDR;
 908                 firmware_to_mem(&lpc,FLASH);
 909         }
 910
 911 end:
 912         if(lpc.sfd)
 913                 close(lpc.sfd);
 914         if(lpc.fwfd)
 915                 close(lpc.fwfd);
 916         if(lpc.b0fd)
 917                 close(lpc.b0fd);
 918         if(lpc.b2fd)
 919                 close(lpc.b2fd);
 920         if(lpc.blfd)
 921                 close(lpc.blfd);
 922         if(lpc.ffwfd)
 923                 close(lpc.ffwfd);
 924
 925         return 0;
 926 }
 927