]> git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_scsi.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
arc: minor fixes in Kconfig
[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 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 );
"Das U-Boot" Source Tree