1 /*
2 * (C) Copyright 2001
3 * Denis Peter, MPL AG Switzerland
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 *
23 *
24 *
25 */
26
27 /*
28 * SCSI support.
29 */
30 #include <common.h>
31 #include <command.h>
32 #include <asm/processor.h>
33 #include <scsi.h>
34 #include <image.h>
35 #include <pci.h>
36
37 #define DEBUG
38
39 #ifdef CONFIG_SCSI_SYM53C8XX
40 #define SCSI_VEND_ID 0x1000
41 #ifndef CONFIG_SCSI_DEV_ID
42 #define SCSI_DEV_ID 0x0001
43 #else
44 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
45 #endif
46 #elif defined CONFIG_SATA_ULI5288
47
48 #define SCSI_VEND_ID 0x10b9
49 #define SCSI_DEV_ID 0x5288
50
51 #else
52 //#error no scsi device defined
53 #endif
54
55
56 static ccb tempccb; /* temporary scsi command buffer */
57
58 static unsigned char tempbuff[512]; /* temporary data buffer */
59
60 static int scsi_max_devs; /* number of highest available scsi device */
61
62 static int scsi_curr_dev; /* current device */
63
64 static block_dev_desc_t scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
65
66 /********************************************************************************
67 * forward declerations of some Setup Routines
68 */
69 void scsi_setup_test_unit_ready(ccb * pccb);
70 void scsi_setup_read_capacity(ccb * pccb);
71 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
72 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
73 void scsi_setup_inquiry(ccb * pccb);
74 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
75
76
77 ulong scsi_read(int device, ulong blknr, ulong blkcnt, void *buffer);
78
79
80 /*********************************************************************************
81 * (re)-scan the scsi bus and reports scsi device info
82 * to the user if mode = 1
83 */
scsi_scan(int mode)84 void scsi_scan(int mode)
85 {
86 unsigned char i,perq,modi,lun;
87 unsigned long capacity,blksz;
88 ccb* pccb=(ccb *)&tempccb;
89
90 if(mode==1) {
91 printf("scanning bus for devices...\n");
92 }
93 for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
94 scsi_dev_desc[i].target=0xff;
95 scsi_dev_desc[i].lun=0xff;
96 scsi_dev_desc[i].lba=0;
97 scsi_dev_desc[i].blksz=0;
98 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
99 scsi_dev_desc[i].vendor[0]=0;
100 scsi_dev_desc[i].product[0]=0;
101 scsi_dev_desc[i].revision[0]=0;
102 scsi_dev_desc[i].removable=FALSE;
103 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
104 scsi_dev_desc[i].dev=i;
105 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
106 scsi_dev_desc[i].block_read=scsi_read;
107 }
108 scsi_max_devs=0;
109 for(i=0;i<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
110 pccb->target=i;
111 for(lun=0;lun<CONFIG_SYS_SCSI_MAX_LUN;lun++) {
112 pccb->lun=lun;
113 pccb->pdata=(unsigned char *)&tempbuff;
114 pccb->datalen=512;
115 scsi_setup_inquiry(pccb);
116 if(scsi_exec(pccb)!=TRUE) {
117 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
118 debug ("Selection timeout ID %d\n",pccb->target);
119 continue; /* selection timeout => assuming no device present */
120 }
121 scsi_print_error(pccb);
122 continue;
123 }
124 perq=tempbuff[0];
125 modi=tempbuff[1];
126 if((perq & 0x1f)==0x1f) {
127 continue; /* skip unknown devices */
128 }
129 if((modi&0x80)==0x80) /* drive is removable */
130 scsi_dev_desc[scsi_max_devs].removable=TRUE;
131 /* get info for this device */
132 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
133 &tempbuff[8], 8);
134 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
135 &tempbuff[16], 16);
136 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
137 &tempbuff[32], 4);
138 scsi_dev_desc[scsi_max_devs].target=pccb->target;
139 scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
140
141 pccb->datalen=0;
142 scsi_setup_test_unit_ready(pccb);
143 if(scsi_exec(pccb)!=TRUE) {
144 if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
145 scsi_dev_desc[scsi_max_devs].type=perq;
146 goto removable;
147 }
148 scsi_print_error(pccb);
149 continue;
150 }
151 pccb->datalen=8;
152 scsi_setup_read_capacity(pccb);
153 if(scsi_exec(pccb)!=TRUE) {
154 scsi_print_error(pccb);
155 continue;
156 }
157 capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
158 ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
159 blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
160 ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
161 scsi_dev_desc[scsi_max_devs].lba=capacity;
162 scsi_dev_desc[scsi_max_devs].blksz=blksz;
163 scsi_dev_desc[scsi_max_devs].type=perq;
164 init_part(&scsi_dev_desc[scsi_max_devs]);
165 removable:
166 if(mode==1) {
167 printf (" Device %d: ", scsi_max_devs);
168 dev_print(&scsi_dev_desc[scsi_max_devs]);
169 } /* if mode */
170 scsi_max_devs++;
171 } /* next LUN */
172 }
173 if(scsi_max_devs>0)
174 scsi_curr_dev=0;
175 else
176 scsi_curr_dev = -1;
177 }
178
179
scsi_init(void)180 void scsi_init(void)
181 {
182 int busdevfunc;
183
184 busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
185 if(busdevfunc==-1) {
186 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
187 return;
188 }
189 #ifdef DEBUG
190 else {
191 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",SCSI_VEND_ID,SCSI_DEV_ID,(busdevfunc>>16)&0xFF,(busdevfunc>>11)&0x1F,(busdevfunc>>8)&0x7);
192 }
193 #endif
194 scsi_low_level_init(busdevfunc);
195 scsi_scan(1);
196 }
197
scsi_get_dev(int dev)198 block_dev_desc_t * scsi_get_dev(int dev)
199 {
200 return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
201 }
202
203
204 /******************************************************************************
205 * scsi boot command intepreter. Derived from diskboot
206 */
do_scsiboot(cmd_tbl_t * cmdtp,int flag,int argc,char * argv[])207 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
208 {
209 char *boot_device = NULL;
210 char *ep;
211 int dev, part = 0;
212 ulong addr, cnt;
213 disk_partition_t info;
214 image_header_t *hdr;
215 int rcode = 0;
216 #if defined(CONFIG_FIT)
217 const void *fit_hdr = NULL;
218 #endif
219
220 switch (argc) {
221 case 1:
222 addr = CONFIG_SYS_LOAD_ADDR;
223 boot_device = getenv ("bootdevice");
224 break;
225 case 2:
226 addr = simple_strtoul(argv[1], NULL, 16);
227 boot_device = getenv ("bootdevice");
228 break;
229 case 3:
230 addr = simple_strtoul(argv[1], NULL, 16);
231 boot_device = argv[2];
232 break;
233 default:
234 cmd_usage(cmdtp);
235 return 1;
236 }
237
238 if (!boot_device) {
239 puts ("\n** No boot device **\n");
240 return 1;
241 }
242
243 dev = simple_strtoul(boot_device, &ep, 16);
244 printf("booting from dev %d\n",dev);
245 if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
246 printf ("\n** Device %d not available\n", dev);
247 return 1;
248 }
249
250 if (*ep) {
251 if (*ep != ':') {
252 puts ("\n** Invalid boot device, use `dev[:part]' **\n");
253 return 1;
254 }
255 part = simple_strtoul(++ep, NULL, 16);
256 }
257 if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
258 printf("error reading partinfo\n");
259 return 1;
260 }
261 if ((strncmp((char *)(info.type), BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
262 (strncmp((char *)(info.type), BOOT_PART_COMP, sizeof(info.type)) != 0)) {
263 printf ("\n** Invalid partition type \"%.32s\""
264 " (expect \"" BOOT_PART_TYPE "\")\n",
265 info.type);
266 return 1;
267 }
268
269 printf ("\nLoading from SCSI device %d, partition %d: "
270 "Name: %.32s Type: %.32s\n",
271 dev, part, info.name, info.type);
272
273 debug ("First Block: %ld, # of blocks: %ld, Block Size: %ld\n",
274 info.start, info.size, info.blksz);
275
276 if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
277 printf ("** Read error on %d:%d\n", dev, part);
278 return 1;
279 }
280
281 switch (genimg_get_format ((void *)addr)) {
282 case IMAGE_FORMAT_LEGACY:
283 hdr = (image_header_t *)addr;
284
285 if (!image_check_hcrc (hdr)) {
286 puts ("\n** Bad Header Checksum **\n");
287 return 1;
288 }
289
290 image_print_contents (hdr);
291 cnt = image_get_image_size (hdr);
292 break;
293 #if defined(CONFIG_FIT)
294 case IMAGE_FORMAT_FIT:
295 fit_hdr = (const void *)addr;
296 puts ("Fit image detected...\n");
297
298 cnt = fit_get_size (fit_hdr);
299 break;
300 #endif
301 default:
302 puts ("** Unknown image type\n");
303 return 1;
304 }
305
306 cnt += info.blksz - 1;
307 cnt /= info.blksz;
308 cnt -= 1;
309
310 if (scsi_read (dev, info.start+1, cnt,
311 (ulong *)(addr+info.blksz)) != cnt) {
312 printf ("** Read error on %d:%d\n", dev, part);
313 return 1;
314 }
315
316 #if defined(CONFIG_FIT)
317 /* This cannot be done earlier, we need complete FIT image in RAM first */
318 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
319 if (!fit_check_format (fit_hdr)) {
320 puts ("** Bad FIT image format\n");
321 return 1;
322 }
323 fit_print_contents (fit_hdr);
324 }
325 #endif
326
327 /* Loading ok, update default load address */
328 load_addr = addr;
329
330 flush_cache (addr, (cnt+1)*info.blksz);
331
332 /* Check if we should attempt an auto-start */
333 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
334 char *local_args[2];
335 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
336 local_args[0] = argv[0];
337 local_args[1] = NULL;
338 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
339 rcode = do_bootm (cmdtp, 0, 1, local_args);
340 }
341 return rcode;
342 }
343
344 /*********************************************************************************
345 * scsi command intepreter
346 */
do_scsi(cmd_tbl_t * cmdtp,int flag,int argc,char * argv[])347 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
348 {
349 switch (argc) {
350 case 0:
351 case 1: cmd_usage(cmdtp); return 1;
352 case 2:
353 if (strncmp(argv[1],"res",3) == 0) {
354 printf("\nReset SCSI\n");
355 scsi_bus_reset();
356 scsi_scan(1);
357 return 0;
358 }
359 if (strncmp(argv[1],"inf",3) == 0) {
360 int i;
361 for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
362 if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
363 continue; /* list only known devices */
364 printf ("SCSI dev. %d: ", i);
365 dev_print(&scsi_dev_desc[i]);
366 }
367 return 0;
368 }
369 if (strncmp(argv[1],"dev",3) == 0) {
370 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
371 printf("\nno SCSI devices available\n");
372 return 1;
373 }
374 printf ("\n Device %d: ", scsi_curr_dev);
375 dev_print(&scsi_dev_desc[scsi_curr_dev]);
376 return 0;
377 }
378 if (strncmp(argv[1],"scan",4) == 0) {
379 scsi_scan(1);
380 return 0;
381 }
382 if (strncmp(argv[1],"part",4) == 0) {
383 int dev, ok;
384 for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
385 if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
386 ok++;
387 if (dev)
388 printf("\n");
389 debug ("print_part of %x\n",dev);
390 print_part(&scsi_dev_desc[dev]);
391 }
392 }
393 if (!ok)
394 printf("\nno SCSI devices available\n");
395 return 1;
396 }
397 cmd_usage(cmdtp);
398 return 1;
399 case 3:
400 if (strncmp(argv[1],"dev",3) == 0) {
401 int dev = (int)simple_strtoul(argv[2], NULL, 10);
402 printf ("\nSCSI device %d: ", dev);
403 if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
404 printf("unknown device\n");
405 return 1;
406 }
407 printf ("\n Device %d: ", dev);
408 dev_print(&scsi_dev_desc[dev]);
409 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
410 return 1;
411 }
412 scsi_curr_dev = dev;
413 printf("... is now current device\n");
414 return 0;
415 }
416 if (strncmp(argv[1],"part",4) == 0) {
417 int dev = (int)simple_strtoul(argv[2], NULL, 10);
418 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
419 print_part(&scsi_dev_desc[dev]);
420 }
421 else {
422 printf ("\nSCSI device %d not available\n", dev);
423 }
424 return 1;
425 }
426 cmd_usage(cmdtp);
427 return 1;
428 default:
429 /* at least 4 args */
430 if (strcmp(argv[1],"read") == 0) {
431 ulong addr = simple_strtoul(argv[2], NULL, 16);
432 ulong blk = simple_strtoul(argv[3], NULL, 16);
433 ulong cnt = simple_strtoul(argv[4], NULL, 16);
434 ulong n;
435 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
436 scsi_curr_dev, blk, cnt);
437 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
438 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
439 return 0;
440 }
441 } /* switch */
442 cmd_usage(cmdtp);
443 return 1;
444 }
445
446 /****************************************************************************************
447 * scsi_read
448 */
449
450 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
451
scsi_read(int device,ulong blknr,ulong blkcnt,void * buffer)452 ulong scsi_read(int device, ulong blknr, ulong blkcnt, void *buffer)
453 {
454 ulong start,blks, buf_addr;
455 unsigned short smallblks;
456 ccb* pccb=(ccb *)&tempccb;
457 device&=0xff;
458 /* Setup device
459 */
460 pccb->target=scsi_dev_desc[device].target;
461 pccb->lun=scsi_dev_desc[device].lun;
462 buf_addr=(unsigned long)buffer;
463 start=blknr;
464 blks=blkcnt;
465 debug ("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
466 do {
467 pccb->pdata=(unsigned char *)buf_addr;
468 if(blks>SCSI_MAX_READ_BLK) {
469 pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
470 smallblks=SCSI_MAX_READ_BLK;
471 scsi_setup_read_ext(pccb,start,smallblks);
472 start+=SCSI_MAX_READ_BLK;
473 blks-=SCSI_MAX_READ_BLK;
474 }
475 else {
476 pccb->datalen=scsi_dev_desc[device].blksz * blks;
477 smallblks=(unsigned short) blks;
478 scsi_setup_read_ext(pccb,start,smallblks);
479 start+=blks;
480 blks=0;
481 }
482 debug ("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
483 if(scsi_exec(pccb)!=TRUE) {
484 scsi_print_error(pccb);
485 blkcnt-=blks;
486 break;
487 }
488 buf_addr+=pccb->datalen;
489 } while(blks!=0);
490 debug ("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",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 */
scsi_ident_cpy(unsigned char * dest,unsigned char * src,unsigned int len)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 */
scsi_trim_trail(unsigned char * str,unsigned int len)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
535 /************************************************************************************
536 * Some setup (fill-in) routines
537 */
scsi_setup_test_unit_ready(ccb * pccb)538 void scsi_setup_test_unit_ready(ccb * pccb)
539 {
540 pccb->cmd[0]=SCSI_TST_U_RDY;
541 pccb->cmd[1]=pccb->lun<<5;
542 pccb->cmd[2]=0;
543 pccb->cmd[3]=0;
544 pccb->cmd[4]=0;
545 pccb->cmd[5]=0;
546 pccb->cmdlen=6;
547 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
548 }
549
scsi_setup_read_capacity(ccb * pccb)550 void scsi_setup_read_capacity(ccb * pccb)
551 {
552 pccb->cmd[0]=SCSI_RD_CAPAC;
553 pccb->cmd[1]=pccb->lun<<5;
554 pccb->cmd[2]=0;
555 pccb->cmd[3]=0;
556 pccb->cmd[4]=0;
557 pccb->cmd[5]=0;
558 pccb->cmd[6]=0;
559 pccb->cmd[7]=0;
560 pccb->cmd[8]=0;
561 pccb->cmd[9]=0;
562 pccb->cmdlen=10;
563 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
564
565 }
566
scsi_setup_read_ext(ccb * pccb,unsigned long start,unsigned short blocks)567 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
568 {
569 pccb->cmd[0]=SCSI_READ10;
570 pccb->cmd[1]=pccb->lun<<5;
571 pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
572 pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
573 pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
574 pccb->cmd[5]=((unsigned char) (start))&0xff;
575 pccb->cmd[6]=0;
576 pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
577 pccb->cmd[8]=(unsigned char) blocks & 0xff;
578 pccb->cmd[6]=0;
579 pccb->cmdlen=10;
580 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
581 debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
582 pccb->cmd[0],pccb->cmd[1],
583 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
584 pccb->cmd[7],pccb->cmd[8]);
585 }
586
scsi_setup_read6(ccb * pccb,unsigned long start,unsigned short blocks)587 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
588 {
589 pccb->cmd[0]=SCSI_READ6;
590 pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
591 pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
592 pccb->cmd[3]=((unsigned char) (start))&0xff;
593 pccb->cmd[4]=(unsigned char) blocks & 0xff;
594 pccb->cmd[5]=0;
595 pccb->cmdlen=6;
596 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
597 debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
598 pccb->cmd[0],pccb->cmd[1],
599 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
600 }
601
602
scsi_setup_inquiry(ccb * pccb)603 void scsi_setup_inquiry(ccb * pccb)
604 {
605 pccb->cmd[0]=SCSI_INQUIRY;
606 pccb->cmd[1]=pccb->lun<<5;
607 pccb->cmd[2]=0;
608 pccb->cmd[3]=0;
609 if(pccb->datalen>255)
610 pccb->cmd[4]=255;
611 else
612 pccb->cmd[4]=(unsigned char)pccb->datalen;
613 pccb->cmd[5]=0;
614 pccb->cmdlen=6;
615 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
616 }
617
618
619 U_BOOT_CMD(
620 scsi, 5, 1, do_scsi,
621 "SCSI sub-system",
622 "reset - reset SCSI controller\n"
623 "scsi info - show available SCSI devices\n"
624 "scsi scan - (re-)scan SCSI bus\n"
625 "scsi device [dev] - show or set current device\n"
626 "scsi part [dev] - print partition table of one or all SCSI devices\n"
627 "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
628 " to memory address `addr'"
629 );
630
631 U_BOOT_CMD(
632 scsiboot, 3, 1, do_scsiboot,
633 "boot from SCSI device",
634 "loadAddr dev:part"
635 );
636