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