common/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 block_dev_desc_t 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(int device, lbaint_t blknr, lbaint_t blkcnt,
  70                        void *buffer);
  71 static ulong scsi_write(int device, 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].dev=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                         init_part(&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;
 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                 busdevfunc = pci_find_device(scsi_device_list[i].vendor,
 196                                              scsi_device_list[i].device,
 197                                              0);
 198                 if (busdevfunc != -1)
 199                         break;
 200         }
 201
 202         if (busdevfunc == -1) {
 203                 printf("Error: SCSI Controller(s) ");
 204                 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
 205                         printf("%04X:%04X ",
 206                                scsi_device_list[i].vendor,
 207                                scsi_device_list[i].device);
 208                 }
 209                 printf("not found\n");
 210                 return;
 211         }
 212 #ifdef DEBUG
 213         else {
 214                 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
 215                        scsi_device_list[i].vendor,
 216                        scsi_device_list[i].device,
 217                        (busdevfunc >> 16) & 0xFF,
 218                        (busdevfunc >> 11) & 0x1F,
 219                        (busdevfunc >> 8) & 0x7);
 220         }
 221 #endif
 222         bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
 223         scsi_low_level_init(busdevfunc);
 224         scsi_scan(1);
 225         bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
 226 }
 227 #endif
 228
 229 #ifdef CONFIG_PARTITIONS
 230 block_dev_desc_t * scsi_get_dev(int dev)
 231 {
 232         return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
 233 }
 234 #endif
 235
 236 /******************************************************************************
 237  * scsi boot command intepreter. Derived from diskboot
 238  */
 239 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 240 {
 241         return common_diskboot(cmdtp, "scsi", argc, argv);
 242 }
 243
 244 /*********************************************************************************
 245  * scsi command intepreter
 246  */
 247 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 248 {
 249         switch (argc) {
 250         case 0:
 251         case 1:
 252                 return CMD_RET_USAGE;
 253
 254         case 2:
 255                         if (strncmp(argv[1],"res",3) == 0) {
 256                                 printf("\nReset SCSI\n");
 257                                 scsi_bus_reset();
 258                                 scsi_scan(1);
 259                                 return 0;
 260                         }
 261                         if (strncmp(argv[1],"inf",3) == 0) {
 262                                 int i;
 263                                 for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
 264                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
 265                                                 continue; /* list only known devices */
 266                                         printf ("SCSI dev. %d:  ", i);
 267                                         dev_print(&scsi_dev_desc[i]);
 268                                 }
 269                                 return 0;
 270                         }
 271                         if (strncmp(argv[1],"dev",3) == 0) {
 272                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
 273                                         printf("\nno SCSI devices available\n");
 274                                         return 1;
 275                                 }
 276                                 printf ("\n    Device %d: ", scsi_curr_dev);
 277                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
 278                                 return 0;
 279                         }
 280                         if (strncmp(argv[1],"scan",4) == 0) {
 281                                 scsi_scan(1);
 282                                 return 0;
 283                         }
 284                         if (strncmp(argv[1],"part",4) == 0) {
 285                                 int dev, ok;
 286                                 for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
 287                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
 288                                                 ok++;
 289                                                 if (dev)
 290                                                         printf("\n");
 291                                                 debug ("print_part of %x\n",dev);
 292                                                         print_part(&scsi_dev_desc[dev]);
 293                                         }
 294                                 }
 295                                 if (!ok)
 296                                         printf("\nno SCSI devices available\n");
 297                                 return 1;
 298                         }
 299                         return CMD_RET_USAGE;
 300         case 3:
 301                         if (strncmp(argv[1],"dev",3) == 0) {
 302                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 303                                 printf ("\nSCSI device %d: ", dev);
 304                                 if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
 305                                         printf("unknown device\n");
 306                                         return 1;
 307                                 }
 308                                 printf ("\n    Device %d: ", dev);
 309                                 dev_print(&scsi_dev_desc[dev]);
 310                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 311                                         return 1;
 312                                 }
 313                                 scsi_curr_dev = dev;
 314                                 printf("... is now current device\n");
 315                                 return 0;
 316                         }
 317                         if (strncmp(argv[1],"part",4) == 0) {
 318                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 319                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
 320                                         print_part(&scsi_dev_desc[dev]);
 321                                 }
 322                                 else {
 323                                         printf ("\nSCSI device %d not available\n", dev);
 324                                 }
 325                                 return 1;
 326                         }
 327                         return CMD_RET_USAGE;
 328     default:
 329                         /* at least 4 args */
 330                         if (strcmp(argv[1],"read") == 0) {
 331                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 332                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
 333                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
 334                                 ulong n;
 335                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
 336                                                 scsi_curr_dev, blk, cnt);
 337                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
 338                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 339                                 return 0;
 340                         } else if (strcmp(argv[1], "write") == 0) {
 341                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 342                                 ulong blk = simple_strtoul(argv[3], NULL, 16);
 343                                 ulong cnt = simple_strtoul(argv[4], NULL, 16);
 344                                 ulong n;
 345                                 printf("\nSCSI write: device %d block # %ld, "
 346                                        "count %ld ... ",
 347                                        scsi_curr_dev, blk, cnt);
 348                                 n = scsi_write(scsi_curr_dev, blk, cnt,
 349                                                (ulong *)addr);
 350                                 printf("%ld blocks written: %s\n", n,
 351                                        (n == cnt) ? "OK" : "ERROR");
 352                                 return 0;
 353                         }
 354         } /* switch */
 355         return CMD_RET_USAGE;
 356 }
 357
 358 /****************************************************************************************
 359  * scsi_read
 360  */
 361
 362 /* almost the maximum amount of the scsi_ext command.. */
 363 #define SCSI_MAX_READ_BLK 0xFFFF
 364 #define SCSI_LBA48_READ 0xFFFFFFF
 365
 366 static ulong scsi_read(int device, lbaint_t blknr, lbaint_t blkcnt,
 367                        void *buffer)
 368 {
 369         lbaint_t start, blks;
 370         uintptr_t buf_addr;
 371         unsigned short smallblks = 0;
 372         ccb* pccb=(ccb *)&tempccb;
 373         device&=0xff;
 374         /* Setup  device
 375          */
 376         pccb->target=scsi_dev_desc[device].target;
 377         pccb->lun=scsi_dev_desc[device].lun;
 378         buf_addr=(unsigned long)buffer;
 379         start=blknr;
 380         blks=blkcnt;
 381         debug("\nscsi_read: dev %d startblk " LBAF
 382               ", blccnt " LBAF " buffer %lx\n",
 383               device, start, blks, (unsigned long)buffer);
 384         do {
 385                 pccb->pdata=(unsigned char *)buf_addr;
 386 #ifdef CONFIG_SYS_64BIT_LBA
 387                 if (start > SCSI_LBA48_READ) {
 388                         unsigned long blocks;
 389                         blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
 390                         pccb->datalen = scsi_dev_desc[device].blksz * blocks;
 391                         scsi_setup_read16(pccb, start, blocks);
 392                         start += blocks;
 393                         blks -= blocks;
 394                 } else
 395 #endif
 396                 if (blks > SCSI_MAX_READ_BLK) {
 397                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
 398                         smallblks=SCSI_MAX_READ_BLK;
 399                         scsi_setup_read_ext(pccb,start,smallblks);
 400                         start+=SCSI_MAX_READ_BLK;
 401                         blks-=SCSI_MAX_READ_BLK;
 402                 }
 403                 else {
 404                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
 405                         smallblks=(unsigned short) blks;
 406                         scsi_setup_read_ext(pccb,start,smallblks);
 407                         start+=blks;
 408                         blks=0;
 409                 }
 410                 debug("scsi_read_ext: startblk " LBAF
 411                       ", blccnt %x buffer %" PRIXPTR "\n",
 412                       start, smallblks, buf_addr);
 413                 if (scsi_exec(pccb) != true) {
 414                         scsi_print_error(pccb);
 415                         blkcnt-=blks;
 416                         break;
 417                 }
 418                 buf_addr+=pccb->datalen;
 419         } while(blks!=0);
 420         debug("scsi_read_ext: end startblk " LBAF
 421               ", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
 422         return(blkcnt);
 423 }
 424
 425 /*******************************************************************************
 426  * scsi_write
 427  */
 428
 429 /* Almost the maximum amount of the scsi_ext command.. */
 430 #define SCSI_MAX_WRITE_BLK 0xFFFF
 431
 432 static ulong scsi_write(int device, lbaint_t blknr,
 433                         lbaint_t blkcnt, const void *buffer)
 434 {
 435         lbaint_t start, blks;
 436         uintptr_t buf_addr;
 437         unsigned short smallblks;
 438         ccb* pccb = (ccb *)&tempccb;
 439         device &= 0xff;
 440         /* Setup  device
 441          */
 442         pccb->target = scsi_dev_desc[device].target;
 443         pccb->lun = scsi_dev_desc[device].lun;
 444         buf_addr = (unsigned long)buffer;
 445         start = blknr;
 446         blks = blkcnt;
 447         debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
 448               __func__, device, start, blks, (unsigned long)buffer);
 449         do {
 450                 pccb->pdata = (unsigned char *)buf_addr;
 451                 if (blks > SCSI_MAX_WRITE_BLK) {
 452                         pccb->datalen = (scsi_dev_desc[device].blksz *
 453                                          SCSI_MAX_WRITE_BLK);
 454                         smallblks = SCSI_MAX_WRITE_BLK;
 455                         scsi_setup_write_ext(pccb, start, smallblks);
 456                         start += SCSI_MAX_WRITE_BLK;
 457                         blks -= SCSI_MAX_WRITE_BLK;
 458                 } else {
 459                         pccb->datalen = scsi_dev_desc[device].blksz * blks;
 460                         smallblks = (unsigned short)blks;
 461                         scsi_setup_write_ext(pccb, start, smallblks);
 462                         start += blks;
 463                         blks = 0;
 464                 }
 465                 debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
 466                       __func__, start, smallblks, buf_addr);
 467                 if (scsi_exec(pccb) != true) {
 468                         scsi_print_error(pccb);
 469                         blkcnt -= blks;
 470                         break;
 471                 }
 472                 buf_addr += pccb->datalen;
 473         } while (blks != 0);
 474         debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
 475               __func__, start, smallblks, buf_addr);
 476         return blkcnt;
 477 }
 478
 479 /* copy src to dest, skipping leading and trailing blanks
 480  * and null terminate the string
 481  */
 482 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
 483 {
 484         int start,end;
 485
 486         start=0;
 487         while(start<len) {
 488                 if(src[start]!=' ')
 489                         break;
 490                 start++;
 491         }
 492         end=len-1;
 493         while(end>start) {
 494                 if(src[end]!=' ')
 495                         break;
 496                 end--;
 497         }
 498         for( ; start<=end; start++) {
 499                 *dest++=src[start];
 500         }
 501         *dest='\0';
 502 }
 503
 504
 505 /* Trim trailing blanks, and NUL-terminate string
 506  */
 507 void scsi_trim_trail (unsigned char *str, unsigned int len)
 508 {
 509         unsigned char *p = str + len - 1;
 510
 511         while (len-- > 0) {
 512                 *p-- = '\0';
 513                 if (*p != ' ') {
 514                         return;
 515                 }
 516         }
 517 }
 518
 519 int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
 520 {
 521         *capacity = 0;
 522
 523         memset(pccb->cmd, 0, sizeof(pccb->cmd));
 524         pccb->cmd[0] = SCSI_RD_CAPAC10;
 525         pccb->cmd[1] = pccb->lun << 5;
 526         pccb->cmdlen = 10;
 527         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
 528
 529         pccb->datalen = 8;
 530         if (scsi_exec(pccb) != true)
 531                 return 1;
 532
 533         *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
 534                     ((lbaint_t)pccb->pdata[1] << 16) |
 535                     ((lbaint_t)pccb->pdata[2] << 8)  |
 536                     ((lbaint_t)pccb->pdata[3]);
 537
 538         if (*capacity != 0xffffffff) {
 539                 /* Read capacity (10) was sufficient for this drive. */
 540                 *blksz = ((unsigned long)pccb->pdata[4] << 24) |
 541                          ((unsigned long)pccb->pdata[5] << 16) |
 542                          ((unsigned long)pccb->pdata[6] << 8)  |
 543                          ((unsigned long)pccb->pdata[7]);
 544                 return 0;
 545         }
 546
 547         /* Read capacity (10) was insufficient. Use read capacity (16). */
 548
 549         memset(pccb->cmd, 0, sizeof(pccb->cmd));
 550         pccb->cmd[0] = SCSI_RD_CAPAC16;
 551         pccb->cmd[1] = 0x10;
 552         pccb->cmdlen = 16;
 553         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
 554
 555         pccb->datalen = 16;
 556         if (scsi_exec(pccb) != true)
 557                 return 1;
 558
 559         *capacity = ((uint64_t)pccb->pdata[0] << 56) |
 560                     ((uint64_t)pccb->pdata[1] << 48) |
 561                     ((uint64_t)pccb->pdata[2] << 40) |
 562                     ((uint64_t)pccb->pdata[3] << 32) |
 563                     ((uint64_t)pccb->pdata[4] << 24) |
 564                     ((uint64_t)pccb->pdata[5] << 16) |
 565                     ((uint64_t)pccb->pdata[6] << 8)  |
 566                     ((uint64_t)pccb->pdata[7]);
 567
 568         *blksz = ((uint64_t)pccb->pdata[8]  << 56) |
 569                  ((uint64_t)pccb->pdata[9]  << 48) |
 570                  ((uint64_t)pccb->pdata[10] << 40) |
 571                  ((uint64_t)pccb->pdata[11] << 32) |
 572                  ((uint64_t)pccb->pdata[12] << 24) |
 573                  ((uint64_t)pccb->pdata[13] << 16) |
 574                  ((uint64_t)pccb->pdata[14] << 8)  |
 575                  ((uint64_t)pccb->pdata[15]);
 576
 577         return 0;
 578 }
 579
 580
 581 /************************************************************************************
 582  * Some setup (fill-in) routines
 583  */
 584 void scsi_setup_test_unit_ready(ccb * pccb)
 585 {
 586         pccb->cmd[0]=SCSI_TST_U_RDY;
 587         pccb->cmd[1]=pccb->lun<<5;
 588         pccb->cmd[2]=0;
 589         pccb->cmd[3]=0;
 590         pccb->cmd[4]=0;
 591         pccb->cmd[5]=0;
 592         pccb->cmdlen=6;
 593         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 594 }
 595
 596 #ifdef CONFIG_SYS_64BIT_LBA
 597 void scsi_setup_read16(ccb * pccb, lbaint_t start, unsigned long blocks)
 598 {
 599         pccb->cmd[0] = SCSI_READ16;
 600         pccb->cmd[1] = pccb->lun<<5;
 601         pccb->cmd[2] = ((unsigned char) (start >> 56)) & 0xff;
 602         pccb->cmd[3] = ((unsigned char) (start >> 48)) & 0xff;
 603         pccb->cmd[4] = ((unsigned char) (start >> 40)) & 0xff;
 604         pccb->cmd[5] = ((unsigned char) (start >> 32)) & 0xff;
 605         pccb->cmd[6] = ((unsigned char) (start >> 24)) & 0xff;
 606         pccb->cmd[7] = ((unsigned char) (start >> 16)) & 0xff;
 607         pccb->cmd[8] = ((unsigned char) (start >> 8)) & 0xff;
 608         pccb->cmd[9] = ((unsigned char) (start)) & 0xff;
 609         pccb->cmd[10] = 0;
 610         pccb->cmd[11] = ((unsigned char) (blocks >> 24)) & 0xff;
 611         pccb->cmd[12] = ((unsigned char) (blocks >> 16)) & 0xff;
 612         pccb->cmd[13] = ((unsigned char) (blocks >> 8)) & 0xff;
 613         pccb->cmd[14] = (unsigned char) blocks & 0xff;
 614         pccb->cmd[15] = 0;
 615         pccb->cmdlen = 16;
 616         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
 617         debug ("scsi_setup_read16: cmd: %02X %02X "
 618                "startblk %02X%02X%02X%02X%02X%02X%02X%02X "
 619                "blccnt %02X%02X%02X%02X\n",
 620                 pccb->cmd[0], pccb->cmd[1],
 621                 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
 622                 pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9],
 623                 pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]);
 624 }
 625 #endif
 626
 627 void scsi_setup_read_ext(ccb * pccb, lbaint_t start, unsigned short blocks)
 628 {
 629         pccb->cmd[0]=SCSI_READ10;
 630         pccb->cmd[1]=pccb->lun<<5;
 631         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
 632         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
 633         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
 634         pccb->cmd[5]=((unsigned char) (start))&0xff;
 635         pccb->cmd[6]=0;
 636         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 637         pccb->cmd[8]=(unsigned char) blocks & 0xff;
 638         pccb->cmd[6]=0;
 639         pccb->cmdlen=10;
 640         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 641         debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 642                 pccb->cmd[0],pccb->cmd[1],
 643                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
 644                 pccb->cmd[7],pccb->cmd[8]);
 645 }
 646
 647 void scsi_setup_write_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
 648 {
 649         pccb->cmd[0] = SCSI_WRITE10;
 650         pccb->cmd[1] = pccb->lun << 5;
 651         pccb->cmd[2] = ((unsigned char) (start>>24)) & 0xff;
 652         pccb->cmd[3] = ((unsigned char) (start>>16)) & 0xff;
 653         pccb->cmd[4] = ((unsigned char) (start>>8)) & 0xff;
 654         pccb->cmd[5] = ((unsigned char) (start)) & 0xff;
 655         pccb->cmd[6] = 0;
 656         pccb->cmd[7] = ((unsigned char) (blocks>>8)) & 0xff;
 657         pccb->cmd[8] = (unsigned char)blocks & 0xff;
 658         pccb->cmd[9] = 0;
 659         pccb->cmdlen = 10;
 660         pccb->msgout[0] = SCSI_IDENTIFY;  /* NOT USED */
 661         debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 662               __func__,
 663               pccb->cmd[0], pccb->cmd[1],
 664               pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
 665               pccb->cmd[7], pccb->cmd[8]);
 666 }
 667
 668 void scsi_setup_read6(ccb * pccb, lbaint_t start, unsigned short blocks)
 669 {
 670         pccb->cmd[0]=SCSI_READ6;
 671         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
 672         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
 673         pccb->cmd[3]=((unsigned char) (start))&0xff;
 674         pccb->cmd[4]=(unsigned char) blocks & 0xff;
 675         pccb->cmd[5]=0;
 676         pccb->cmdlen=6;
 677         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 678         debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
 679                 pccb->cmd[0],pccb->cmd[1],
 680                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
 681 }
 682
 683
 684 void scsi_setup_inquiry(ccb * pccb)
 685 {
 686         pccb->cmd[0]=SCSI_INQUIRY;
 687         pccb->cmd[1]=pccb->lun<<5;
 688         pccb->cmd[2]=0;
 689         pccb->cmd[3]=0;
 690         if(pccb->datalen>255)
 691                 pccb->cmd[4]=255;
 692         else
 693                 pccb->cmd[4]=(unsigned char)pccb->datalen;
 694         pccb->cmd[5]=0;
 695         pccb->cmdlen=6;
 696         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 697 }
 698
 699
 700 U_BOOT_CMD(
 701         scsi, 5, 1, do_scsi,
 702         "SCSI sub-system",
 703         "reset - reset SCSI controller\n"
 704         "scsi info  - show available SCSI devices\n"
 705         "scsi scan  - (re-)scan SCSI bus\n"
 706         "scsi device [dev] - show or set current device\n"
 707         "scsi part [dev] - print partition table of one or all SCSI devices\n"
 708         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 709         "     to memory address `addr'\n"
 710         "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
 711         "     `blk#' from memory address `addr'"
 712 );
 713
 714 U_BOOT_CMD(
 715         scsiboot, 3, 1, do_scsiboot,
 716         "boot from SCSI device",
 717         "loadAddr dev:part"
 718 );