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