cmd/scsi.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /*
   9  * SCSI support.
  10  */
  11 #include <common.h>
  12 #include <command.h>
  13 #include <inttypes.h>
  14 #include <asm/processor.h>
  15 #include <scsi.h>
  16 #include <image.h>
  17 #include <pci.h>
  18
  19 #ifdef CONFIG_SCSI_DEV_LIST
  20 #define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
  21 #else
  22 #ifdef CONFIG_SCSI_SYM53C8XX
  23 #define SCSI_VEND_ID    0x1000
  24 #ifndef CONFIG_SCSI_DEV_ID
  25 #define SCSI_DEV_ID             0x0001
  26 #else
  27 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
  28 #endif
  29 #elif defined CONFIG_SATA_ULI5288
  30
  31 #define SCSI_VEND_ID 0x10b9
  32 #define SCSI_DEV_ID  0x5288
  33
  34 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
  35 #error no scsi device defined
  36 #endif
  37 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
  38 #endif
  39
  40 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
  41 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
  42 #endif
  43 static ccb tempccb;     /* temporary scsi command buffer */
  44
  45 static unsigned char tempbuff[512]; /* temporary data buffer */
  46
  47 static int scsi_max_devs; /* number of highest available scsi device */
  48
  49 static int scsi_curr_dev; /* current device */
  50
  51 static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
  52
  53 /********************************************************************************
  54  *  forward declerations of some Setup Routines
  55  */
  56 void scsi_setup_test_unit_ready(ccb * pccb);
  57 void scsi_setup_read6(ccb * pccb, lbaint_t start, unsigned short blocks);
  58 void scsi_setup_read_ext(ccb * pccb, lbaint_t start, unsigned short blocks);
  59 void scsi_setup_read16(ccb * pccb, lbaint_t start, unsigned long blocks);
  60
  61 static void scsi_setup_write_ext(ccb *pccb, lbaint_t start,
  62                                 unsigned short blocks);
  63 void scsi_setup_inquiry(ccb * pccb);
  64 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
  65
  66
  67 static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
  68                               unsigned long *blksz);
  69 static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
  70                        lbaint_t blkcnt, void *buffer);
  71 static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
  72                         lbaint_t blkcnt, const void *buffer);
  73
  74
  75 /*********************************************************************************
  76  * (re)-scan the scsi bus and reports scsi device info
  77  * to the user if mode = 1
  78  */
  79 void scsi_scan(int mode)
  80 {
  81         unsigned char i,perq,modi,lun;
  82         lbaint_t capacity;
  83         unsigned long blksz;
  84         ccb* pccb=(ccb *)&tempccb;
  85
  86         if(mode==1) {
  87                 printf("scanning bus for devices...\n");
  88         }
  89         for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
  90                 scsi_dev_desc[i].target=0xff;
  91                 scsi_dev_desc[i].lun=0xff;
  92                 scsi_dev_desc[i].lba=0;
  93                 scsi_dev_desc[i].blksz=0;
  94                 scsi_dev_desc[i].log2blksz =
  95                         LOG2_INVALID(typeof(scsi_dev_desc[i].log2blksz));
  96                 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
  97                 scsi_dev_desc[i].vendor[0]=0;
  98                 scsi_dev_desc[i].product[0]=0;
  99                 scsi_dev_desc[i].revision[0]=0;
 100                 scsi_dev_desc[i].removable = false;
 101                 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
 102                 scsi_dev_desc[i].devnum = i;
 103                 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 104                 scsi_dev_desc[i].block_read=scsi_read;
 105                 scsi_dev_desc[i].block_write = scsi_write;
 106         }
 107         scsi_max_devs=0;
 108         for(i=0;i<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
 109                 pccb->target=i;
 110                 for(lun=0;lun<CONFIG_SYS_SCSI_MAX_LUN;lun++) {
 111                         pccb->lun=lun;
 112                         pccb->pdata=(unsigned char *)&tempbuff;
 113                         pccb->datalen=512;
 114                         scsi_setup_inquiry(pccb);
 115                         if (scsi_exec(pccb) != true) {
 116                                 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
 117                                         debug ("Selection timeout ID %d\n",pccb->target);
 118                                         continue; /* selection timeout => assuming no device present */
 119                                 }
 120                                 scsi_print_error(pccb);
 121                                 continue;
 122                         }
 123                         perq=tempbuff[0];
 124                         modi=tempbuff[1];
 125                         if((perq & 0x1f)==0x1f) {
 126                                 continue; /* skip unknown devices */
 127                         }
 128                         if((modi&0x80)==0x80) /* drive is removable */
 129                                 scsi_dev_desc[scsi_max_devs].removable=true;
 130                         /* get info for this device */
 131                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
 132                                        &tempbuff[8], 8);
 133                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
 134                                        &tempbuff[16], 16);
 135                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
 136                                        &tempbuff[32], 4);
 137                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
 138                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
 139
 140                         pccb->datalen=0;
 141                         scsi_setup_test_unit_ready(pccb);
 142                         if (scsi_exec(pccb) != true) {
 143                                 if (scsi_dev_desc[scsi_max_devs].removable == true) {
 144                                         scsi_dev_desc[scsi_max_devs].type=perq;
 145                                         goto removable;
 146                                 }
 147                                 scsi_print_error(pccb);
 148                                 continue;
 149                         }
 150                         if (scsi_read_capacity(pccb, &capacity, &blksz)) {
 151                                 scsi_print_error(pccb);
 152                                 continue;
 153                         }
 154                         scsi_dev_desc[scsi_max_devs].lba=capacity;
 155                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
 156                         scsi_dev_desc[scsi_max_devs].log2blksz =
 157                                 LOG2(scsi_dev_desc[scsi_max_devs].blksz);
 158                         scsi_dev_desc[scsi_max_devs].type=perq;
 159                         part_init(&scsi_dev_desc[scsi_max_devs]);
 160 removable:
 161                         if(mode==1) {
 162                                 printf ("  Device %d: ", scsi_max_devs);
 163                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
 164                         } /* if mode */
 165                         scsi_max_devs++;
 166                 } /* next LUN */
 167         }
 168         if(scsi_max_devs>0)
 169                 scsi_curr_dev=0;
 170         else
 171                 scsi_curr_dev = -1;
 172
 173         printf("Found %d device(s).\n", scsi_max_devs);
 174 #ifndef CONFIG_SPL_BUILD
 175         setenv_ulong("scsidevs", scsi_max_devs);
 176 #endif
 177 }
 178
 179 int scsi_get_disk_count(void)
 180 {
 181         return scsi_max_devs;
 182 }
 183
 184 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
 185 void scsi_init(void)
 186 {
 187         int busdevfunc = -1;
 188         int i;
 189         /*
 190          * Find a device from the list, this driver will support a single
 191          * controller.
 192          */
 193         for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
 194                 /* get PCI Device ID */
 195 #ifdef CONFIG_DM_PCI
 196                 struct udevice *dev;
 197                 int ret;
 198
 199                 ret = dm_pci_find_device(scsi_device_list[i].vendor,
 200                                          scsi_device_list[i].device, 0, &dev);
 201                 if (!ret) {
 202                         busdevfunc = dm_pci_get_bdf(dev);
 203                         break;
 204                 }
 205 #else
 206                 busdevfunc = pci_find_device(scsi_device_list[i].vendor,
 207                                              scsi_device_list[i].device,
 208                                              0);
 209 #endif
 210                 if (busdevfunc != -1)
 211                         break;
 212         }
 213
 214         if (busdevfunc == -1) {
 215                 printf("Error: SCSI Controller(s) ");
 216                 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
 217                         printf("%04X:%04X ",
 218                                scsi_device_list[i].vendor,
 219                                scsi_device_list[i].device);
 220                 }
 221                 printf("not found\n");
 222                 return;
 223         }
 224 #ifdef DEBUG
 225         else {
 226                 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
 227                        scsi_device_list[i].vendor,
 228                        scsi_device_list[i].device,
 229                        (busdevfunc >> 16) & 0xFF,
 230                        (busdevfunc >> 11) & 0x1F,
 231                        (busdevfunc >> 8) & 0x7);
 232         }
 233 #endif
 234         bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
 235         scsi_low_level_init(busdevfunc);
 236         scsi_scan(1);
 237         bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
 238 }
 239 #endif
 240
 241 #ifdef CONFIG_PARTITIONS
 242 struct blk_desc *scsi_get_dev(int dev)
 243 {
 244         return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
 245 }
 246 #endif
 247
 248 /******************************************************************************
 249  * scsi boot command intepreter. Derived from diskboot
 250  */
 251 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 252 {
 253         return common_diskboot(cmdtp, "scsi", argc, argv);
 254 }
 255
 256 /*********************************************************************************
 257  * scsi command intepreter
 258  */
 259 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 260 {
 261         switch (argc) {
 262         case 0:
 263         case 1:
 264                 return CMD_RET_USAGE;
 265
 266         case 2:
 267                         if (strncmp(argv[1],"res",3) == 0) {
 268                                 printf("\nReset SCSI\n");
 269                                 scsi_bus_reset();
 270                                 scsi_scan(1);
 271                                 return 0;
 272                         }
 273                         if (strncmp(argv[1],"inf",3) == 0) {
 274                                 int i;
 275                                 for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
 276                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
 277                                                 continue; /* list only known devices */
 278                                         printf ("SCSI dev. %d:  ", i);
 279                                         dev_print(&scsi_dev_desc[i]);
 280                                 }
 281                                 return 0;
 282                         }
 283                         if (strncmp(argv[1],"dev",3) == 0) {
 284                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
 285                                         printf("\nno SCSI devices available\n");
 286                                         return 1;
 287                                 }
 288                                 printf ("\n    Device %d: ", scsi_curr_dev);
 289                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
 290                                 return 0;
 291                         }
 292                         if (strncmp(argv[1],"scan",4) == 0) {
 293                                 scsi_scan(1);
 294                                 return 0;
 295                         }
 296                         if (strncmp(argv[1],"part",4) == 0) {
 297                                 int dev, ok;
 298                                 for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
 299                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
 300                                                 ok++;
 301                                                 if (dev)
 302                                                         printf("\n");
 303                                                 debug ("print_part of %x\n",dev);
 304                                                 part_print(&scsi_dev_desc[dev]);
 305                                         }
 306                                 }
 307                                 if (!ok)
 308                                         printf("\nno SCSI devices available\n");
 309                                 return 1;
 310                         }
 311                         return CMD_RET_USAGE;
 312         case 3:
 313                         if (strncmp(argv[1],"dev",3) == 0) {
 314                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 315                                 printf ("\nSCSI device %d: ", dev);
 316                                 if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
 317                                         printf("unknown device\n");
 318                                         return 1;
 319                                 }
 320                                 printf ("\n    Device %d: ", dev);
 321                                 dev_print(&scsi_dev_desc[dev]);
 322                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 323                                         return 1;
 324                                 }
 325                                 scsi_curr_dev = dev;
 326                                 printf("... is now current device\n");
 327                                 return 0;
 328                         }
 329                         if (strncmp(argv[1],"part",4) == 0) {
 330                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 331                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
 332                                         part_print(&scsi_dev_desc[dev]);
 333                                 }
 334                                 else {
 335                                         printf ("\nSCSI device %d not available\n", dev);
 336                                 }
 337                                 return 1;
 338                         }
 339                         return CMD_RET_USAGE;
 340     default:
 341                         /* at least 4 args */
 342                         if (strcmp(argv[1],"read") == 0) {
 343                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 344                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
 345                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
 346                                 ulong n;
 347                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
 348                                                 scsi_curr_dev, blk, cnt);
 349                                 n = scsi_read(&scsi_dev_desc[scsi_curr_dev],
 350                                               blk, cnt, (ulong *)addr);
 351                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 352                                 return 0;
 353                         } else if (strcmp(argv[1], "write") == 0) {
 354                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 355                                 ulong blk = simple_strtoul(argv[3], NULL, 16);
 356                                 ulong cnt = simple_strtoul(argv[4], NULL, 16);
 357                                 ulong n;
 358                                 printf("\nSCSI write: device %d block # %ld, "
 359                                        "count %ld ... ",
 360                                        scsi_curr_dev, blk, cnt);
 361                                 n = scsi_write(&scsi_dev_desc[scsi_curr_dev],
 362                                                blk, cnt, (ulong *)addr);
 363                                 printf("%ld blocks written: %s\n", n,
 364                                        (n == cnt) ? "OK" : "ERROR");
 365                                 return 0;
 366                         }
 367         } /* switch */
 368         return CMD_RET_USAGE;
 369 }
 370
 371 /****************************************************************************************
 372  * scsi_read
 373  */
 374
 375 /* almost the maximum amount of the scsi_ext command.. */
 376 #define SCSI_MAX_READ_BLK 0xFFFF
 377 #define SCSI_LBA48_READ 0xFFFFFFF
 378
 379 static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
 380                        lbaint_t blkcnt, void *buffer)
 381 {
 382         int device = block_dev->devnum;
 383         lbaint_t start, blks;
 384         uintptr_t buf_addr;
 385         unsigned short smallblks = 0;
 386         ccb* pccb=(ccb *)&tempccb;
 387         device&=0xff;
 388         /* Setup  device
 389          */
 390         pccb->target=scsi_dev_desc[device].target;
 391         pccb->lun=scsi_dev_desc[device].lun;
 392         buf_addr=(unsigned long)buffer;
 393         start=blknr;
 394         blks=blkcnt;
 395         debug("\nscsi_read: dev %d startblk " LBAF
 396               ", blccnt " LBAF " buffer %lx\n",
 397               device, start, blks, (unsigned long)buffer);
 398         do {
 399                 pccb->pdata=(unsigned char *)buf_addr;
 400 #ifdef CONFIG_SYS_64BIT_LBA
 401                 if (start > SCSI_LBA48_READ) {
 402                         unsigned long blocks;
 403                         blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
 404                         pccb->datalen = scsi_dev_desc[device].blksz * blocks;
 405                         scsi_setup_read16(pccb, start, blocks);
 406                         start += blocks;
 407                         blks -= blocks;
 408                 } else
 409 #endif
 410                 if (blks > SCSI_MAX_READ_BLK) {
 411                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
 412                         smallblks=SCSI_MAX_READ_BLK;
 413                         scsi_setup_read_ext(pccb,start,smallblks);
 414                         start+=SCSI_MAX_READ_BLK;
 415                         blks-=SCSI_MAX_READ_BLK;
 416                 }
 417                 else {
 418                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
 419                         smallblks=(unsigned short) blks;
 420                         scsi_setup_read_ext(pccb,start,smallblks);
 421                         start+=blks;
 422                         blks=0;
 423                 }
 424                 debug("scsi_read_ext: startblk " LBAF
 425                       ", blccnt %x buffer %" PRIXPTR "\n",
 426                       start, smallblks, buf_addr);
 427                 if (scsi_exec(pccb) != true) {
 428                         scsi_print_error(pccb);
 429                         blkcnt-=blks;
 430                         break;
 431                 }
 432                 buf_addr+=pccb->datalen;
 433         } while(blks!=0);
 434         debug("scsi_read_ext: end startblk " LBAF
 435               ", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
 436         return(blkcnt);
 437 }
 438
 439 /*******************************************************************************
 440  * scsi_write
 441  */
 442
 443 /* Almost the maximum amount of the scsi_ext command.. */
 444 #define SCSI_MAX_WRITE_BLK 0xFFFF
 445
 446 static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
 447                         lbaint_t blkcnt, const void *buffer)
 448 {
 449         int device = block_dev->devnum;
 450         lbaint_t start, blks;
 451         uintptr_t buf_addr;
 452         unsigned short smallblks;
 453         ccb* pccb = (ccb *)&tempccb;
 454         device &= 0xff;
 455         /* Setup  device
 456          */
 457         pccb->target = scsi_dev_desc[device].target;
 458         pccb->lun = scsi_dev_desc[device].lun;
 459         buf_addr = (unsigned long)buffer;
 460         start = blknr;
 461         blks = blkcnt;
 462         debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
 463               __func__, device, start, blks, (unsigned long)buffer);
 464         do {
 465                 pccb->pdata = (unsigned char *)buf_addr;
 466                 if (blks > SCSI_MAX_WRITE_BLK) {
 467                         pccb->datalen = (scsi_dev_desc[device].blksz *
 468                                          SCSI_MAX_WRITE_BLK);
 469                         smallblks = SCSI_MAX_WRITE_BLK;
 470                         scsi_setup_write_ext(pccb, start, smallblks);
 471                         start += SCSI_MAX_WRITE_BLK;
 472                         blks -= SCSI_MAX_WRITE_BLK;
 473                 } else {
 474                         pccb->datalen = scsi_dev_desc[device].blksz * blks;
 475                         smallblks = (unsigned short)blks;
 476                         scsi_setup_write_ext(pccb, start, smallblks);
 477                         start += blks;
 478                         blks = 0;
 479                 }
 480                 debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
 481                       __func__, start, smallblks, buf_addr);
 482                 if (scsi_exec(pccb) != true) {
 483                         scsi_print_error(pccb);
 484                         blkcnt -= blks;
 485                         break;
 486                 }
 487                 buf_addr += pccb->datalen;
 488         } while (blks != 0);
 489         debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
 490               __func__, start, smallblks, buf_addr);
 491         return blkcnt;
 492 }
 493
 494 /* copy src to dest, skipping leading and trailing blanks
 495  * and null terminate the string
 496  */
 497 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
 498 {
 499         int start,end;
 500
 501         start=0;
 502         while(start<len) {
 503                 if(src[start]!=' ')
 504                         break;
 505                 start++;
 506         }
 507         end=len-1;
 508         while(end>start) {
 509                 if(src[end]!=' ')
 510                         break;
 511                 end--;
 512         }
 513         for( ; start<=end; start++) {
 514                 *dest++=src[start];
 515         }
 516         *dest='\0';
 517 }
 518
 519
 520 /* Trim trailing blanks, and NUL-terminate string
 521  */
 522 void scsi_trim_trail (unsigned char *str, unsigned int len)
 523 {
 524         unsigned char *p = str + len - 1;
 525
 526         while (len-- > 0) {
 527                 *p-- = '\0';
 528                 if (*p != ' ') {
 529                         return;
 530                 }
 531         }
 532 }
 533
 534 int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
 535 {
 536         *capacity = 0;
 537
 538         memset(pccb->cmd, 0, sizeof(pccb->cmd));
 539         pccb->cmd[0] = SCSI_RD_CAPAC10;
 540         pccb->cmd[1] = pccb->lun << 5;
 541         pccb->cmdlen = 10;
 542         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
 543
 544         pccb->datalen = 8;
 545         if (scsi_exec(pccb) != true)
 546                 return 1;
 547
 548         *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
 549                     ((lbaint_t)pccb->pdata[1] << 16) |
 550                     ((lbaint_t)pccb->pdata[2] << 8)  |
 551                     ((lbaint_t)pccb->pdata[3]);
 552
 553         if (*capacity != 0xffffffff) {
 554                 /* Read capacity (10) was sufficient for this drive. */
 555                 *blksz = ((unsigned long)pccb->pdata[4] << 24) |
 556                          ((unsigned long)pccb->pdata[5] << 16) |
 557                          ((unsigned long)pccb->pdata[6] << 8)  |
 558                          ((unsigned long)pccb->pdata[7]);
 559                 return 0;
 560         }
 561
 562         /* Read capacity (10) was insufficient. Use read capacity (16). */
 563
 564         memset(pccb->cmd, 0, sizeof(pccb->cmd));
 565         pccb->cmd[0] = SCSI_RD_CAPAC16;
 566         pccb->cmd[1] = 0x10;
 567         pccb->cmdlen = 16;
 568         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
 569
 570         pccb->datalen = 16;
 571         if (scsi_exec(pccb) != true)
 572                 return 1;
 573
 574         *capacity = ((uint64_t)pccb->pdata[0] << 56) |
 575                     ((uint64_t)pccb->pdata[1] << 48) |
 576                     ((uint64_t)pccb->pdata[2] << 40) |
 577                     ((uint64_t)pccb->pdata[3] << 32) |
 578                     ((uint64_t)pccb->pdata[4] << 24) |
 579                     ((uint64_t)pccb->pdata[5] << 16) |
 580                     ((uint64_t)pccb->pdata[6] << 8)  |
 581                     ((uint64_t)pccb->pdata[7]);
 582
 583         *blksz = ((uint64_t)pccb->pdata[8]  << 56) |
 584                  ((uint64_t)pccb->pdata[9]  << 48) |
 585                  ((uint64_t)pccb->pdata[10] << 40) |
 586                  ((uint64_t)pccb->pdata[11] << 32) |
 587                  ((uint64_t)pccb->pdata[12] << 24) |
 588                  ((uint64_t)pccb->pdata[13] << 16) |
 589                  ((uint64_t)pccb->pdata[14] << 8)  |
 590                  ((uint64_t)pccb->pdata[15]);
 591
 592         return 0;
 593 }
 594
 595
 596 /************************************************************************************
 597  * Some setup (fill-in) routines
 598  */
 599 void scsi_setup_test_unit_ready(ccb * pccb)
 600 {
 601         pccb->cmd[0]=SCSI_TST_U_RDY;
 602         pccb->cmd[1]=pccb->lun<<5;
 603         pccb->cmd[2]=0;
 604         pccb->cmd[3]=0;
 605         pccb->cmd[4]=0;
 606         pccb->cmd[5]=0;
 607         pccb->cmdlen=6;
 608         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 609 }
 610
 611 #ifdef CONFIG_SYS_64BIT_LBA
 612 void scsi_setup_read16(ccb * pccb, lbaint_t start, unsigned long blocks)
 613 {
 614         pccb->cmd[0] = SCSI_READ16;
 615         pccb->cmd[1] = pccb->lun<<5;
 616         pccb->cmd[2] = ((unsigned char) (start >> 56)) & 0xff;
 617         pccb->cmd[3] = ((unsigned char) (start >> 48)) & 0xff;
 618         pccb->cmd[4] = ((unsigned char) (start >> 40)) & 0xff;
 619         pccb->cmd[5] = ((unsigned char) (start >> 32)) & 0xff;
 620         pccb->cmd[6] = ((unsigned char) (start >> 24)) & 0xff;
 621         pccb->cmd[7] = ((unsigned char) (start >> 16)) & 0xff;
 622         pccb->cmd[8] = ((unsigned char) (start >> 8)) & 0xff;
 623         pccb->cmd[9] = ((unsigned char) (start)) & 0xff;
 624         pccb->cmd[10] = 0;
 625         pccb->cmd[11] = ((unsigned char) (blocks >> 24)) & 0xff;
 626         pccb->cmd[12] = ((unsigned char) (blocks >> 16)) & 0xff;
 627         pccb->cmd[13] = ((unsigned char) (blocks >> 8)) & 0xff;
 628         pccb->cmd[14] = (unsigned char) blocks & 0xff;
 629         pccb->cmd[15] = 0;
 630         pccb->cmdlen = 16;
 631         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
 632         debug ("scsi_setup_read16: cmd: %02X %02X "
 633                "startblk %02X%02X%02X%02X%02X%02X%02X%02X "
 634                "blccnt %02X%02X%02X%02X\n",
 635                 pccb->cmd[0], pccb->cmd[1],
 636                 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
 637                 pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9],
 638                 pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]);
 639 }
 640 #endif
 641
 642 void scsi_setup_read_ext(ccb * pccb, lbaint_t start, unsigned short blocks)
 643 {
 644         pccb->cmd[0]=SCSI_READ10;
 645         pccb->cmd[1]=pccb->lun<<5;
 646         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
 647         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
 648         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
 649         pccb->cmd[5]=((unsigned char) (start))&0xff;
 650         pccb->cmd[6]=0;
 651         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 652         pccb->cmd[8]=(unsigned char) blocks & 0xff;
 653         pccb->cmd[6]=0;
 654         pccb->cmdlen=10;
 655         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 656         debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 657                 pccb->cmd[0],pccb->cmd[1],
 658                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
 659                 pccb->cmd[7],pccb->cmd[8]);
 660 }
 661
 662 void scsi_setup_write_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
 663 {
 664         pccb->cmd[0] = SCSI_WRITE10;
 665         pccb->cmd[1] = pccb->lun << 5;
 666         pccb->cmd[2] = ((unsigned char) (start>>24)) & 0xff;
 667         pccb->cmd[3] = ((unsigned char) (start>>16)) & 0xff;
 668         pccb->cmd[4] = ((unsigned char) (start>>8)) & 0xff;
 669         pccb->cmd[5] = ((unsigned char) (start)) & 0xff;
 670         pccb->cmd[6] = 0;
 671         pccb->cmd[7] = ((unsigned char) (blocks>>8)) & 0xff;
 672         pccb->cmd[8] = (unsigned char)blocks & 0xff;
 673         pccb->cmd[9] = 0;
 674         pccb->cmdlen = 10;
 675         pccb->msgout[0] = SCSI_IDENTIFY;  /* NOT USED */
 676         debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 677               __func__,
 678               pccb->cmd[0], pccb->cmd[1],
 679               pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
 680               pccb->cmd[7], pccb->cmd[8]);
 681 }
 682
 683 void scsi_setup_read6(ccb * pccb, lbaint_t start, unsigned short blocks)
 684 {
 685         pccb->cmd[0]=SCSI_READ6;
 686         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
 687         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
 688         pccb->cmd[3]=((unsigned char) (start))&0xff;
 689         pccb->cmd[4]=(unsigned char) blocks & 0xff;
 690         pccb->cmd[5]=0;
 691         pccb->cmdlen=6;
 692         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 693         debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
 694                 pccb->cmd[0],pccb->cmd[1],
 695                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
 696 }
 697
 698
 699 void scsi_setup_inquiry(ccb * pccb)
 700 {
 701         pccb->cmd[0]=SCSI_INQUIRY;
 702         pccb->cmd[1]=pccb->lun<<5;
 703         pccb->cmd[2]=0;
 704         pccb->cmd[3]=0;
 705         if(pccb->datalen>255)
 706                 pccb->cmd[4]=255;
 707         else
 708                 pccb->cmd[4]=(unsigned char)pccb->datalen;
 709         pccb->cmd[5]=0;
 710         pccb->cmdlen=6;
 711         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 712 }
 713
 714
 715 U_BOOT_CMD(
 716         scsi, 5, 1, do_scsi,
 717         "SCSI sub-system",
 718         "reset - reset SCSI controller\n"
 719         "scsi info  - show available SCSI devices\n"
 720         "scsi scan  - (re-)scan SCSI bus\n"
 721         "scsi device [dev] - show or set current device\n"
 722         "scsi part [dev] - print partition table of one or all SCSI devices\n"
 723         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 724         "     to memory address `addr'\n"
 725         "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
 726         "     `blk#' from memory address `addr'"
 727 );
 728
 729 U_BOOT_CMD(
 730         scsiboot, 3, 1, do_scsiboot,
 731         "boot from SCSI device",
 732         "loadAddr dev:part"
 733 );