common/cmd_scsi.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  *
  23  *
  24  *
  25  */
  26
  27 /*
  28  * SCSI support.
  29  */
  30 #include <common.h>
  31 #include <command.h>
  32 #include <asm/processor.h>
  33 #include <scsi.h>
  34 #include <image.h>
  35 #include <pci.h>
  36
  37 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
  38
  39 #ifdef CONFIG_SCSI_SYM53C8XX
  40 #define SCSI_VEND_ID    0x1000
  41 #ifndef CONFIG_SCSI_DEV_ID
  42 #define SCSI_DEV_ID             0x0001
  43 #else
  44 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
  45 #endif
  46 #elif defined CONFIG_SATA_ULI5288
  47
  48 #define SCSI_VEND_ID 0x10b9
  49 #define SCSI_DEV_ID  0x5288
  50
  51 #else
  52 #error no scsi device defined
  53 #endif
  54
  55
  56 static ccb tempccb;     /* temporary scsi command buffer */
  57
  58 static unsigned char tempbuff[512]; /* temporary data buffer */
  59
  60 static int scsi_max_devs; /* number of highest available scsi device */
  61
  62 static int scsi_curr_dev; /* current device */
  63
  64 static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
  65
  66 /********************************************************************************
  67  *  forward declerations of some Setup Routines
  68  */
  69 void scsi_setup_test_unit_ready(ccb * pccb);
  70 void scsi_setup_read_capacity(ccb * pccb);
  71 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
  72 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
  73 void scsi_setup_inquiry(ccb * pccb);
  74 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
  75
  76
  77 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer);
  78
  79
  80 /*********************************************************************************
  81  * (re)-scan the scsi bus and reports scsi device info
  82  * to the user if mode = 1
  83  */
  84 void scsi_scan(int mode)
  85 {
  86         unsigned char i,perq,modi,lun;
  87         unsigned long capacity,blksz;
  88         ccb* pccb=(ccb *)&tempccb;
  89
  90         if(mode==1) {
  91                 printf("scanning bus for devices...\n");
  92         }
  93         for(i=0;i<CFG_SCSI_MAX_DEVICE;i++) {
  94                 scsi_dev_desc[i].target=0xff;
  95                 scsi_dev_desc[i].lun=0xff;
  96                 scsi_dev_desc[i].lba=0;
  97                 scsi_dev_desc[i].blksz=0;
  98                 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
  99                 scsi_dev_desc[i].vendor[0]=0;
 100                 scsi_dev_desc[i].product[0]=0;
 101                 scsi_dev_desc[i].revision[0]=0;
 102                 scsi_dev_desc[i].removable=FALSE;
 103                 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
 104                 scsi_dev_desc[i].dev=i;
 105                 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 106                 scsi_dev_desc[i].block_read=scsi_read;
 107         }
 108         scsi_max_devs=0;
 109         for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
 110                 pccb->target=i;
 111                 for(lun=0;lun<CFG_SCSI_MAX_LUN;lun++) {
 112                         pccb->lun=lun;
 113                         pccb->pdata=(unsigned char *)&tempbuff;
 114                         pccb->datalen=512;
 115                         scsi_setup_inquiry(pccb);
 116                         if(scsi_exec(pccb)!=TRUE) {
 117                                 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
 118                                         debug ("Selection timeout ID %d\n",pccb->target);
 119                                         continue; /* selection timeout => assuming no device present */
 120                                 }
 121                                 scsi_print_error(pccb);
 122                                 continue;
 123                         }
 124                         perq=tempbuff[0];
 125                         modi=tempbuff[1];
 126                         if((perq & 0x1f)==0x1f) {
 127                                 continue; /* skip unknown devices */
 128                         }
 129                         if((modi&0x80)==0x80) /* drive is removable */
 130                                 scsi_dev_desc[scsi_max_devs].removable=TRUE;
 131                         /* get info for this device */
 132                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].vendor[0],&tempbuff[8],8);
 133                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].product[0],&tempbuff[16],16);
 134                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].revision[0],&tempbuff[32],4);
 135                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
 136                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
 137
 138                         pccb->datalen=0;
 139                         scsi_setup_test_unit_ready(pccb);
 140                         if(scsi_exec(pccb)!=TRUE) {
 141                                 if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
 142                                         scsi_dev_desc[scsi_max_devs].type=perq;
 143                                         goto removable;
 144                                 }
 145                                 scsi_print_error(pccb);
 146                                 continue;
 147                         }
 148                         pccb->datalen=8;
 149                         scsi_setup_read_capacity(pccb);
 150                         if(scsi_exec(pccb)!=TRUE) {
 151                                 scsi_print_error(pccb);
 152                                 continue;
 153                         }
 154                         capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
 155                                         ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
 156                         blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
 157                                 ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
 158                         scsi_dev_desc[scsi_max_devs].lba=capacity;
 159                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
 160                         scsi_dev_desc[scsi_max_devs].type=perq;
 161                         init_part(&scsi_dev_desc[scsi_max_devs]);
 162 removable:
 163                         if(mode==1) {
 164                                 printf ("  Device %d: ", scsi_max_devs);
 165                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
 166                         } /* if mode */
 167                         scsi_max_devs++;
 168                 } /* next LUN */
 169         }
 170         if(scsi_max_devs>0)
 171                 scsi_curr_dev=0;
 172         else
 173                 scsi_curr_dev=-1;
 174 }
 175
 176
 177 void scsi_init(void)
 178 {
 179         int busdevfunc;
 180
 181         busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
 182         if(busdevfunc==-1) {
 183                 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
 184                 return;
 185         }
 186 #ifdef DEBUG
 187         else {
 188                 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",SCSI_VEND_ID,SCSI_DEV_ID,(busdevfunc>>16)&0xFF,(busdevfunc>>11)&0x1F,(busdevfunc>>8)&0x7);
 189         }
 190 #endif
 191         scsi_low_level_init(busdevfunc);
 192         scsi_scan(1);
 193 }
 194
 195 block_dev_desc_t * scsi_get_dev(int dev)
 196 {
 197         return((block_dev_desc_t *)&scsi_dev_desc[dev]);
 198 }
 199
 200
 201 /******************************************************************************
 202  * scsi boot command intepreter. Derived from diskboot
 203  */
 204 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 205 {
 206         char *boot_device = NULL;
 207         char *ep;
 208         int dev, part = 0;
 209         ulong addr, cnt, checksum;
 210         disk_partition_t info;
 211         image_header_t *hdr;
 212         int rcode = 0;
 213
 214         switch (argc) {
 215         case 1:
 216                 addr = CFG_LOAD_ADDR;
 217                 boot_device = getenv ("bootdevice");
 218                 break;
 219         case 2:
 220                 addr = simple_strtoul(argv[1], NULL, 16);
 221                 boot_device = getenv ("bootdevice");
 222                 break;
 223         case 3:
 224                 addr = simple_strtoul(argv[1], NULL, 16);
 225                 boot_device = argv[2];
 226                 break;
 227         default:
 228                 printf ("Usage:\n%s\n", cmdtp->usage);
 229                 return 1;
 230         }
 231
 232         if (!boot_device) {
 233                 puts ("\n** No boot device **\n");
 234                 return 1;
 235         }
 236
 237         dev = simple_strtoul(boot_device, &ep, 16);
 238         printf("booting from dev %d\n",dev);
 239         if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 240                 printf ("\n** Device %d not available\n", dev);
 241                 return 1;
 242         }
 243
 244         if (*ep) {
 245                 if (*ep != ':') {
 246                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 247                         return 1;
 248                 }
 249                 part = simple_strtoul(++ep, NULL, 16);
 250         }
 251         if (get_partition_info (scsi_dev_desc, part, &info)) {
 252                 printf("error reading partinfo\n");
 253                 return 1;
 254         }
 255         if ((strncmp((char *)(info.type), BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
 256             (strncmp((char *)(info.type), BOOT_PART_COMP, sizeof(info.type)) != 0)) {
 257                 printf ("\n** Invalid partition type \"%.32s\""
 258                         " (expect \"" BOOT_PART_TYPE "\")\n",
 259                         info.type);
 260                 return 1;
 261         }
 262
 263         printf ("\nLoading from SCSI device %d, partition %d: "
 264                 "Name: %.32s  Type: %.32s\n",
 265                 dev, part, info.name, info.type);
 266
 267         debug ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
 268                 info.start, info.size, info.blksz);
 269
 270         if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
 271                 printf ("** Read error on %d:%d\n", dev, part);
 272                 return 1;
 273         }
 274
 275         hdr = (image_header_t *)addr;
 276
 277         if (ntohl(hdr->ih_magic) == IH_MAGIC) {
 278                 printf("\n** Bad Magic Number **\n");
 279                 return 1;
 280         }
 281
 282         checksum = ntohl(hdr->ih_hcrc);
 283         hdr->ih_hcrc = 0;
 284
 285         if (crc32 (0, (uchar *)hdr, sizeof(image_header_t)) != checksum) {
 286                 puts ("\n** Bad Header Checksum **\n");
 287                 return 1;
 288         }
 289         hdr->ih_hcrc = htonl(checksum); /* restore checksum for later use */
 290
 291         print_image_hdr (hdr);
 292         cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
 293         cnt += info.blksz - 1;
 294         cnt /= info.blksz;
 295         cnt -= 1;
 296
 297         if (scsi_read (dev, info.start+1, cnt,
 298                       (ulong *)(addr+info.blksz)) != cnt) {
 299                 printf ("** Read error on %d:%d\n", dev, part);
 300                 return 1;
 301         }
 302         /* Loading ok, update default load address */
 303         load_addr = addr;
 304
 305         flush_cache (addr, (cnt+1)*info.blksz);
 306
 307         /* Check if we should attempt an auto-start */
 308         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 309                 char *local_args[2];
 310                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 311                 local_args[0] = argv[0];
 312                 local_args[1] = NULL;
 313                 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
 314                 rcode = do_bootm (cmdtp, 0, 1, local_args);
 315         }
 316          return rcode;
 317 }
 318
 319 /*********************************************************************************
 320  * scsi command intepreter
 321  */
 322 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 323 {
 324         switch (argc) {
 325     case 0:
 326     case 1:     printf ("Usage:\n%s\n", cmdtp->usage);  return 1;
 327     case 2:
 328                         if (strncmp(argv[1],"res",3) == 0) {
 329                                 printf("\nReset SCSI\n");
 330                                 scsi_bus_reset();
 331                                 scsi_scan(1);
 332                                 return 0;
 333                         }
 334                         if (strncmp(argv[1],"inf",3) == 0) {
 335                                 int i;
 336                                 for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
 337                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
 338                                                 continue; /* list only known devices */
 339                                         printf ("SCSI dev. %d:  ", i);
 340                                         dev_print(&scsi_dev_desc[i]);
 341                                 }
 342                                 return 0;
 343                         }
 344                         if (strncmp(argv[1],"dev",3) == 0) {
 345                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
 346                                         printf("\nno SCSI devices available\n");
 347                                         return 1;
 348                                 }
 349                                 printf ("\n    Device %d: ", scsi_curr_dev);
 350                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
 351                                 return 0;
 352                         }
 353                         if (strncmp(argv[1],"scan",4) == 0) {
 354                                 scsi_scan(1);
 355                                 return 0;
 356                         }
 357                         if (strncmp(argv[1],"part",4) == 0) {
 358                                 int dev, ok;
 359                                 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
 360                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
 361                                                 ok++;
 362                                                 if (dev)
 363                                                         printf("\n");
 364                                                 debug ("print_part of %x\n",dev);
 365                                                         print_part(&scsi_dev_desc[dev]);
 366                                         }
 367                                 }
 368                                 if (!ok)
 369                                         printf("\nno SCSI devices available\n");
 370                                 return 1;
 371                         }
 372                         printf ("Usage:\n%s\n", cmdtp->usage);
 373                         return 1;
 374         case 3:
 375                         if (strncmp(argv[1],"dev",3) == 0) {
 376                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 377                                 printf ("\nSCSI device %d: ", dev);
 378                                 if (dev >= CFG_SCSI_MAX_DEVICE) {
 379                                         printf("unknown device\n");
 380                                         return 1;
 381                                 }
 382                                 printf ("\n    Device %d: ", dev);
 383                                 dev_print(&scsi_dev_desc[dev]);
 384                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 385                                         return 1;
 386                                 }
 387                                 scsi_curr_dev = dev;
 388                                 printf("... is now current device\n");
 389                                 return 0;
 390                         }
 391                         if (strncmp(argv[1],"part",4) == 0) {
 392                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 393                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
 394                                         print_part(&scsi_dev_desc[dev]);
 395                                 }
 396                                 else {
 397                                         printf ("\nSCSI device %d not available\n", dev);
 398                                 }
 399                                 return 1;
 400                         }
 401                         printf ("Usage:\n%s\n", cmdtp->usage);
 402                         return 1;
 403     default:
 404                         /* at least 4 args */
 405                         if (strcmp(argv[1],"read") == 0) {
 406                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 407                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
 408                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
 409                                 ulong n;
 410                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
 411                                                 scsi_curr_dev, blk, cnt);
 412                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
 413                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 414                                 return 0;
 415                         }
 416         } /* switch */
 417         printf ("Usage:\n%s\n", cmdtp->usage);
 418         return 1;
 419 }
 420
 421 /****************************************************************************************
 422  * scsi_read
 423  */
 424
 425 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
 426
 427 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
 428 {
 429         ulong start,blks, buf_addr;
 430         unsigned short smallblks;
 431         ccb* pccb=(ccb *)&tempccb;
 432         device&=0xff;
 433         /* Setup  device
 434          */
 435         pccb->target=scsi_dev_desc[device].target;
 436         pccb->lun=scsi_dev_desc[device].lun;
 437         buf_addr=(unsigned long)buffer;
 438         start=blknr;
 439         blks=blkcnt;
 440         debug ("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
 441         do {
 442                 pccb->pdata=(unsigned char *)buf_addr;
 443                 if(blks>SCSI_MAX_READ_BLK) {
 444                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
 445                         smallblks=SCSI_MAX_READ_BLK;
 446                         scsi_setup_read_ext(pccb,start,smallblks);
 447                         start+=SCSI_MAX_READ_BLK;
 448                         blks-=SCSI_MAX_READ_BLK;
 449                 }
 450                 else {
 451                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
 452                         smallblks=(unsigned short) blks;
 453                         scsi_setup_read_ext(pccb,start,smallblks);
 454                         start+=blks;
 455                         blks=0;
 456                 }
 457                 debug ("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 458                 if(scsi_exec(pccb)!=TRUE) {
 459                         scsi_print_error(pccb);
 460                         blkcnt-=blks;
 461                         break;
 462                 }
 463                 buf_addr+=pccb->datalen;
 464         } while(blks!=0);
 465         debug ("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 466         return(blkcnt);
 467 }
 468
 469 /* copy src to dest, skipping leading and trailing blanks
 470  * and null terminate the string
 471  */
 472 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
 473 {
 474         int start,end;
 475
 476         start=0;
 477         while(start<len) {
 478                 if(src[start]!=' ')
 479                         break;
 480                 start++;
 481         }
 482         end=len-1;
 483         while(end>start) {
 484                 if(src[end]!=' ')
 485                         break;
 486                 end--;
 487         }
 488         for( ; start<=end; start++) {
 489                 *dest++=src[start];
 490         }
 491         *dest='\0';
 492 }
 493
 494
 495 /* Trim trailing blanks, and NUL-terminate string
 496  */
 497 void scsi_trim_trail (unsigned char *str, unsigned int len)
 498 {
 499         unsigned char *p = str + len - 1;
 500
 501         while (len-- > 0) {
 502                 *p-- = '\0';
 503                 if (*p != ' ') {
 504                         return;
 505                 }
 506         }
 507 }
 508
 509
 510 /************************************************************************************
 511  * Some setup (fill-in) routines
 512  */
 513 void scsi_setup_test_unit_ready(ccb * pccb)
 514 {
 515         pccb->cmd[0]=SCSI_TST_U_RDY;
 516         pccb->cmd[1]=pccb->lun<<5;
 517         pccb->cmd[2]=0;
 518         pccb->cmd[3]=0;
 519         pccb->cmd[4]=0;
 520         pccb->cmd[5]=0;
 521         pccb->cmdlen=6;
 522         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 523 }
 524
 525 void scsi_setup_read_capacity(ccb * pccb)
 526 {
 527         pccb->cmd[0]=SCSI_RD_CAPAC;
 528         pccb->cmd[1]=pccb->lun<<5;
 529         pccb->cmd[2]=0;
 530         pccb->cmd[3]=0;
 531         pccb->cmd[4]=0;
 532         pccb->cmd[5]=0;
 533         pccb->cmd[6]=0;
 534         pccb->cmd[7]=0;
 535         pccb->cmd[8]=0;
 536         pccb->cmd[9]=0;
 537         pccb->cmdlen=10;
 538         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 539
 540 }
 541
 542 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
 543 {
 544         pccb->cmd[0]=SCSI_READ10;
 545         pccb->cmd[1]=pccb->lun<<5;
 546         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
 547         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
 548         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
 549         pccb->cmd[5]=((unsigned char) (start))&0xff;
 550         pccb->cmd[6]=0;
 551         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 552         pccb->cmd[8]=(unsigned char) blocks & 0xff;
 553         pccb->cmd[6]=0;
 554         pccb->cmdlen=10;
 555         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 556         debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 557                 pccb->cmd[0],pccb->cmd[1],
 558                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
 559                 pccb->cmd[7],pccb->cmd[8]);
 560 }
 561
 562 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
 563 {
 564         pccb->cmd[0]=SCSI_READ6;
 565         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
 566         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
 567         pccb->cmd[3]=((unsigned char) (start))&0xff;
 568         pccb->cmd[4]=(unsigned char) blocks & 0xff;
 569         pccb->cmd[5]=0;
 570         pccb->cmdlen=6;
 571         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 572         debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
 573                 pccb->cmd[0],pccb->cmd[1],
 574                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
 575 }
 576
 577
 578 void scsi_setup_inquiry(ccb * pccb)
 579 {
 580         pccb->cmd[0]=SCSI_INQUIRY;
 581         pccb->cmd[1]=pccb->lun<<5;
 582         pccb->cmd[2]=0;
 583         pccb->cmd[3]=0;
 584         if(pccb->datalen>255)
 585                 pccb->cmd[4]=255;
 586         else
 587                 pccb->cmd[4]=(unsigned char)pccb->datalen;
 588         pccb->cmd[5]=0;
 589         pccb->cmdlen=6;
 590         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 591 }
 592
 593
 594 U_BOOT_CMD(
 595         scsi, 5, 1, do_scsi,
 596         "scsi    - SCSI sub-system\n",
 597         "reset - reset SCSI controller\n"
 598         "scsi info  - show available SCSI devices\n"
 599         "scsi scan  - (re-)scan SCSI bus\n"
 600         "scsi device [dev] - show or set current device\n"
 601         "scsi part [dev] - print partition table of one or all SCSI devices\n"
 602         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 603         "     to memory address `addr'\n"
 604 );
 605
 606 U_BOOT_CMD(
 607         scsiboot, 3, 1, do_scsiboot,
 608         "scsiboot- boot from SCSI device\n",
 609         "loadAddr dev:part\n"
 610 );
 611
 612 #endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */