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