cmd_scsi.c 16 KB

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