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