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 defined(CONFIG_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, void *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((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
 133                                        &tempbuff[8], 8);
 134                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
 135                                        &tempbuff[16], 16);
 136                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
 137                                        &tempbuff[32], 4);
 138                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
 139                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
 140
 141                         pccb->datalen=0;
 142                         scsi_setup_test_unit_ready(pccb);
 143                         if(scsi_exec(pccb)!=TRUE) {
 144                                 if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
 145                                         scsi_dev_desc[scsi_max_devs].type=perq;
 146                                         goto removable;
 147                                 }
 148                                 scsi_print_error(pccb);
 149                                 continue;
 150                         }
 151                         pccb->datalen=8;
 152                         scsi_setup_read_capacity(pccb);
 153                         if(scsi_exec(pccb)!=TRUE) {
 154                                 scsi_print_error(pccb);
 155                                 continue;
 156                         }
 157                         capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
 158                                         ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
 159                         blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
 160                                 ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
 161                         scsi_dev_desc[scsi_max_devs].lba=capacity;
 162                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
 163                         scsi_dev_desc[scsi_max_devs].type=perq;
 164                         init_part(&scsi_dev_desc[scsi_max_devs]);
 165 removable:
 166                         if(mode==1) {
 167                                 printf ("  Device %d: ", scsi_max_devs);
 168                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
 169                         } /* if mode */
 170                         scsi_max_devs++;
 171                 } /* next LUN */
 172         }
 173         if(scsi_max_devs>0)
 174                 scsi_curr_dev=0;
 175         else
 176                 scsi_curr_dev=-1;
 177 }
 178
 179
 180 void scsi_init(void)
 181 {
 182         int busdevfunc;
 183
 184         busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
 185         if(busdevfunc==-1) {
 186                 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
 187                 return;
 188         }
 189 #ifdef DEBUG
 190         else {
 191                 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);
 192         }
 193 #endif
 194         scsi_low_level_init(busdevfunc);
 195         scsi_scan(1);
 196 }
 197
 198 block_dev_desc_t * scsi_get_dev(int dev)
 199 {
 200         return (dev < CFG_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
 201 }
 202
 203
 204 /******************************************************************************
 205  * scsi boot command intepreter. Derived from diskboot
 206  */
 207 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 208 {
 209         char *boot_device = NULL;
 210         char *ep;
 211         int dev, part = 0;
 212         ulong addr, cnt, checksum;
 213         disk_partition_t info;
 214         image_header_t *hdr;
 215         int rcode = 0;
 216
 217         switch (argc) {
 218         case 1:
 219                 addr = CFG_LOAD_ADDR;
 220                 boot_device = getenv ("bootdevice");
 221                 break;
 222         case 2:
 223                 addr = simple_strtoul(argv[1], NULL, 16);
 224                 boot_device = getenv ("bootdevice");
 225                 break;
 226         case 3:
 227                 addr = simple_strtoul(argv[1], NULL, 16);
 228                 boot_device = argv[2];
 229                 break;
 230         default:
 231                 printf ("Usage:\n%s\n", cmdtp->usage);
 232                 return 1;
 233         }
 234
 235         if (!boot_device) {
 236                 puts ("\n** No boot device **\n");
 237                 return 1;
 238         }
 239
 240         dev = simple_strtoul(boot_device, &ep, 16);
 241         printf("booting from dev %d\n",dev);
 242         if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 243                 printf ("\n** Device %d not available\n", dev);
 244                 return 1;
 245         }
 246
 247         if (*ep) {
 248                 if (*ep != ':') {
 249                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 250                         return 1;
 251                 }
 252                 part = simple_strtoul(++ep, NULL, 16);
 253         }
 254         if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
 255                 printf("error reading partinfo\n");
 256                 return 1;
 257         }
 258         if ((strncmp((char *)(info.type), BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
 259             (strncmp((char *)(info.type), BOOT_PART_COMP, sizeof(info.type)) != 0)) {
 260                 printf ("\n** Invalid partition type \"%.32s\""
 261                         " (expect \"" BOOT_PART_TYPE "\")\n",
 262                         info.type);
 263                 return 1;
 264         }
 265
 266         printf ("\nLoading from SCSI device %d, partition %d: "
 267                 "Name: %.32s  Type: %.32s\n",
 268                 dev, part, info.name, info.type);
 269
 270         debug ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
 271                 info.start, info.size, info.blksz);
 272
 273         if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
 274                 printf ("** Read error on %d:%d\n", dev, part);
 275                 return 1;
 276         }
 277
 278         hdr = (image_header_t *)addr;
 279
 280         if (ntohl(hdr->ih_magic) == IH_MAGIC) {
 281                 printf("\n** Bad Magic Number **\n");
 282                 return 1;
 283         }
 284
 285         checksum = ntohl(hdr->ih_hcrc);
 286         hdr->ih_hcrc = 0;
 287
 288         if (crc32 (0, (uchar *)hdr, sizeof(image_header_t)) != checksum) {
 289                 puts ("\n** Bad Header Checksum **\n");
 290                 return 1;
 291         }
 292         hdr->ih_hcrc = htonl(checksum); /* restore checksum for later use */
 293
 294         print_image_hdr (hdr);
 295         cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
 296         cnt += info.blksz - 1;
 297         cnt /= info.blksz;
 298         cnt -= 1;
 299
 300         if (scsi_read (dev, info.start+1, cnt,
 301                       (ulong *)(addr+info.blksz)) != cnt) {
 302                 printf ("** Read error on %d:%d\n", dev, part);
 303                 return 1;
 304         }
 305         /* Loading ok, update default load address */
 306         load_addr = addr;
 307
 308         flush_cache (addr, (cnt+1)*info.blksz);
 309
 310         /* Check if we should attempt an auto-start */
 311         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 312                 char *local_args[2];
 313                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 314                 local_args[0] = argv[0];
 315                 local_args[1] = NULL;
 316                 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
 317                 rcode = do_bootm (cmdtp, 0, 1, local_args);
 318         }
 319          return rcode;
 320 }
 321
 322 /*********************************************************************************
 323  * scsi command intepreter
 324  */
 325 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 326 {
 327         switch (argc) {
 328     case 0:
 329     case 1:     printf ("Usage:\n%s\n", cmdtp->usage);  return 1;
 330     case 2:
 331                         if (strncmp(argv[1],"res",3) == 0) {
 332                                 printf("\nReset SCSI\n");
 333                                 scsi_bus_reset();
 334                                 scsi_scan(1);
 335                                 return 0;
 336                         }
 337                         if (strncmp(argv[1],"inf",3) == 0) {
 338                                 int i;
 339                                 for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
 340                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
 341                                                 continue; /* list only known devices */
 342                                         printf ("SCSI dev. %d:  ", i);
 343                                         dev_print(&scsi_dev_desc[i]);
 344                                 }
 345                                 return 0;
 346                         }
 347                         if (strncmp(argv[1],"dev",3) == 0) {
 348                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
 349                                         printf("\nno SCSI devices available\n");
 350                                         return 1;
 351                                 }
 352                                 printf ("\n    Device %d: ", scsi_curr_dev);
 353                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
 354                                 return 0;
 355                         }
 356                         if (strncmp(argv[1],"scan",4) == 0) {
 357                                 scsi_scan(1);
 358                                 return 0;
 359                         }
 360                         if (strncmp(argv[1],"part",4) == 0) {
 361                                 int dev, ok;
 362                                 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
 363                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
 364                                                 ok++;
 365                                                 if (dev)
 366                                                         printf("\n");
 367                                                 debug ("print_part of %x\n",dev);
 368                                                         print_part(&scsi_dev_desc[dev]);
 369                                         }
 370                                 }
 371                                 if (!ok)
 372                                         printf("\nno SCSI devices available\n");
 373                                 return 1;
 374                         }
 375                         printf ("Usage:\n%s\n", cmdtp->usage);
 376                         return 1;
 377         case 3:
 378                         if (strncmp(argv[1],"dev",3) == 0) {
 379                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 380                                 printf ("\nSCSI device %d: ", dev);
 381                                 if (dev >= CFG_SCSI_MAX_DEVICE) {
 382                                         printf("unknown device\n");
 383                                         return 1;
 384                                 }
 385                                 printf ("\n    Device %d: ", dev);
 386                                 dev_print(&scsi_dev_desc[dev]);
 387                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 388                                         return 1;
 389                                 }
 390                                 scsi_curr_dev = dev;
 391                                 printf("... is now current device\n");
 392                                 return 0;
 393                         }
 394                         if (strncmp(argv[1],"part",4) == 0) {
 395                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 396                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
 397                                         print_part(&scsi_dev_desc[dev]);
 398                                 }
 399                                 else {
 400                                         printf ("\nSCSI device %d not available\n", dev);
 401                                 }
 402                                 return 1;
 403                         }
 404                         printf ("Usage:\n%s\n", cmdtp->usage);
 405                         return 1;
 406     default:
 407                         /* at least 4 args */
 408                         if (strcmp(argv[1],"read") == 0) {
 409                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 410                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
 411                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
 412                                 ulong n;
 413                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
 414                                                 scsi_curr_dev, blk, cnt);
 415                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
 416                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 417                                 return 0;
 418                         }
 419         } /* switch */
 420         printf ("Usage:\n%s\n", cmdtp->usage);
 421         return 1;
 422 }
 423
 424 /****************************************************************************************
 425  * scsi_read
 426  */
 427
 428 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
 429
 430 ulong scsi_read(int device, ulong blknr, ulong blkcnt, void *buffer)
 431 {
 432         ulong start,blks, buf_addr;
 433         unsigned short smallblks;
 434         ccb* pccb=(ccb *)&tempccb;
 435         device&=0xff;
 436         /* Setup  device
 437          */
 438         pccb->target=scsi_dev_desc[device].target;
 439         pccb->lun=scsi_dev_desc[device].lun;
 440         buf_addr=(unsigned long)buffer;
 441         start=blknr;
 442         blks=blkcnt;
 443         debug ("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
 444         do {
 445                 pccb->pdata=(unsigned char *)buf_addr;
 446                 if(blks>SCSI_MAX_READ_BLK) {
 447                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
 448                         smallblks=SCSI_MAX_READ_BLK;
 449                         scsi_setup_read_ext(pccb,start,smallblks);
 450                         start+=SCSI_MAX_READ_BLK;
 451                         blks-=SCSI_MAX_READ_BLK;
 452                 }
 453                 else {
 454                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
 455                         smallblks=(unsigned short) blks;
 456                         scsi_setup_read_ext(pccb,start,smallblks);
 457                         start+=blks;
 458                         blks=0;
 459                 }
 460                 debug ("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 461                 if(scsi_exec(pccb)!=TRUE) {
 462                         scsi_print_error(pccb);
 463                         blkcnt-=blks;
 464                         break;
 465                 }
 466                 buf_addr+=pccb->datalen;
 467         } while(blks!=0);
 468         debug ("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 469         return(blkcnt);
 470 }
 471
 472 /* copy src to dest, skipping leading and trailing blanks
 473  * and null terminate the string
 474  */
 475 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
 476 {
 477         int start,end;
 478
 479         start=0;
 480         while(start<len) {
 481                 if(src[start]!=' ')
 482                         break;
 483                 start++;
 484         }
 485         end=len-1;
 486         while(end>start) {
 487                 if(src[end]!=' ')
 488                         break;
 489                 end--;
 490         }
 491         for( ; start<=end; start++) {
 492                 *dest++=src[start];
 493         }
 494         *dest='\0';
 495 }
 496
 497
 498 /* Trim trailing blanks, and NUL-terminate string
 499  */
 500 void scsi_trim_trail (unsigned char *str, unsigned int len)
 501 {
 502         unsigned char *p = str + len - 1;
 503
 504         while (len-- > 0) {
 505                 *p-- = '\0';
 506                 if (*p != ' ') {
 507                         return;
 508                 }
 509         }
 510 }
 511
 512
 513 /************************************************************************************
 514  * Some setup (fill-in) routines
 515  */
 516 void scsi_setup_test_unit_ready(ccb * pccb)
 517 {
 518         pccb->cmd[0]=SCSI_TST_U_RDY;
 519         pccb->cmd[1]=pccb->lun<<5;
 520         pccb->cmd[2]=0;
 521         pccb->cmd[3]=0;
 522         pccb->cmd[4]=0;
 523         pccb->cmd[5]=0;
 524         pccb->cmdlen=6;
 525         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 526 }
 527
 528 void scsi_setup_read_capacity(ccb * pccb)
 529 {
 530         pccb->cmd[0]=SCSI_RD_CAPAC;
 531         pccb->cmd[1]=pccb->lun<<5;
 532         pccb->cmd[2]=0;
 533         pccb->cmd[3]=0;
 534         pccb->cmd[4]=0;
 535         pccb->cmd[5]=0;
 536         pccb->cmd[6]=0;
 537         pccb->cmd[7]=0;
 538         pccb->cmd[8]=0;
 539         pccb->cmd[9]=0;
 540         pccb->cmdlen=10;
 541         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 542
 543 }
 544
 545 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
 546 {
 547         pccb->cmd[0]=SCSI_READ10;
 548         pccb->cmd[1]=pccb->lun<<5;
 549         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
 550         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
 551         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
 552         pccb->cmd[5]=((unsigned char) (start))&0xff;
 553         pccb->cmd[6]=0;
 554         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 555         pccb->cmd[8]=(unsigned char) blocks & 0xff;
 556         pccb->cmd[6]=0;
 557         pccb->cmdlen=10;
 558         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 559         debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 560                 pccb->cmd[0],pccb->cmd[1],
 561                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
 562                 pccb->cmd[7],pccb->cmd[8]);
 563 }
 564
 565 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
 566 {
 567         pccb->cmd[0]=SCSI_READ6;
 568         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
 569         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
 570         pccb->cmd[3]=((unsigned char) (start))&0xff;
 571         pccb->cmd[4]=(unsigned char) blocks & 0xff;
 572         pccb->cmd[5]=0;
 573         pccb->cmdlen=6;
 574         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 575         debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
 576                 pccb->cmd[0],pccb->cmd[1],
 577                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
 578 }
 579
 580
 581 void scsi_setup_inquiry(ccb * pccb)
 582 {
 583         pccb->cmd[0]=SCSI_INQUIRY;
 584         pccb->cmd[1]=pccb->lun<<5;
 585         pccb->cmd[2]=0;
 586         pccb->cmd[3]=0;
 587         if(pccb->datalen>255)
 588                 pccb->cmd[4]=255;
 589         else
 590                 pccb->cmd[4]=(unsigned char)pccb->datalen;
 591         pccb->cmd[5]=0;
 592         pccb->cmdlen=6;
 593         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 594 }
 595
 596
 597 U_BOOT_CMD(
 598         scsi, 5, 1, do_scsi,
 599         "scsi    - SCSI sub-system\n",
 600         "reset - reset SCSI controller\n"
 601         "scsi info  - show available SCSI devices\n"
 602         "scsi scan  - (re-)scan SCSI bus\n"
 603         "scsi device [dev] - show or set current device\n"
 604         "scsi part [dev] - print partition table of one or all SCSI devices\n"
 605         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 606         "     to memory address `addr'\n"
 607 );
 608
 609 U_BOOT_CMD(
 610         scsiboot, 3, 1, do_scsiboot,
 611         "scsiboot- boot from SCSI device\n",
 612         "loadAddr dev:part\n"
 613 );
 614
 615 #endif