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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 /*
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 #ifdef CONFIG_SCSI_DEV_LIST
38 #define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
39 #else
40 #ifdef CONFIG_SCSI_SYM53C8XX
41 #define SCSI_VEND_ID    0x1000
42 #ifndef CONFIG_SCSI_DEV_ID
43 #define SCSI_DEV_ID             0x0001
44 #else
45 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
46 #endif
47 #elif defined CONFIG_SATA_ULI5288
48
49 #define SCSI_VEND_ID 0x10b9
50 #define SCSI_DEV_ID  0x5288
51
52 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
53 #error no scsi device defined
54 #endif
55 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
56 #endif
57
58 #ifdef CONFIG_PCI
59 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
60 #endif
61 static ccb tempccb;     /* temporary scsi command buffer */
62
63 static unsigned char tempbuff[512]; /* temporary data buffer */
64
65 static int scsi_max_devs; /* number of highest available scsi device */
66
67 static int scsi_curr_dev; /* current device */
68
69 static block_dev_desc_t scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
70
71 /********************************************************************************
72  *  forward declerations of some Setup Routines
73  */
74 void scsi_setup_test_unit_ready(ccb * pccb);
75 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
76 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
77 static void scsi_setup_write_ext(ccb *pccb, unsigned long start,
78                           unsigned short blocks);
79 void scsi_setup_inquiry(ccb * pccb);
80 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
81
82
83 static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
84                               unsigned long *blksz);
85 static ulong scsi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer);
86 static ulong scsi_write(int device, ulong blknr,
87                         lbaint_t blkcnt, const void *buffer);
88
89
90 /*********************************************************************************
91  * (re)-scan the scsi bus and reports scsi device info
92  * to the user if mode = 1
93  */
94 void scsi_scan(int mode)
95 {
96         unsigned char i,perq,modi,lun;
97         lbaint_t capacity;
98         unsigned long blksz;
99         ccb* pccb=(ccb *)&tempccb;
100
101         if(mode==1) {
102                 printf("scanning bus for devices...\n");
103         }
104         for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
105                 scsi_dev_desc[i].target=0xff;
106                 scsi_dev_desc[i].lun=0xff;
107                 scsi_dev_desc[i].lba=0;
108                 scsi_dev_desc[i].blksz=0;
109                 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
110                 scsi_dev_desc[i].vendor[0]=0;
111                 scsi_dev_desc[i].product[0]=0;
112                 scsi_dev_desc[i].revision[0]=0;
113                 scsi_dev_desc[i].removable = false;
114                 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
115                 scsi_dev_desc[i].dev=i;
116                 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
117                 scsi_dev_desc[i].block_read=scsi_read;
118                 scsi_dev_desc[i].block_write = scsi_write;
119         }
120         scsi_max_devs=0;
121         for(i=0;i<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
122                 pccb->target=i;
123                 for(lun=0;lun<CONFIG_SYS_SCSI_MAX_LUN;lun++) {
124                         pccb->lun=lun;
125                         pccb->pdata=(unsigned char *)&tempbuff;
126                         pccb->datalen=512;
127                         scsi_setup_inquiry(pccb);
128                         if (scsi_exec(pccb) != true) {
129                                 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
130                                         debug ("Selection timeout ID %d\n",pccb->target);
131                                         continue; /* selection timeout => assuming no device present */
132                                 }
133                                 scsi_print_error(pccb);
134                                 continue;
135                         }
136                         perq=tempbuff[0];
137                         modi=tempbuff[1];
138                         if((perq & 0x1f)==0x1f) {
139                                 continue; /* skip unknown devices */
140                         }
141                         if((modi&0x80)==0x80) /* drive is removable */
142                                 scsi_dev_desc[scsi_max_devs].removable=true;
143                         /* get info for this device */
144                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
145                                        &tempbuff[8], 8);
146                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
147                                        &tempbuff[16], 16);
148                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
149                                        &tempbuff[32], 4);
150                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
151                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
152
153                         pccb->datalen=0;
154                         scsi_setup_test_unit_ready(pccb);
155                         if (scsi_exec(pccb) != true) {
156                                 if (scsi_dev_desc[scsi_max_devs].removable == true) {
157                                         scsi_dev_desc[scsi_max_devs].type=perq;
158                                         goto removable;
159                                 }
160                                 scsi_print_error(pccb);
161                                 continue;
162                         }
163                         if (scsi_read_capacity(pccb, &capacity, &blksz)) {
164                                 scsi_print_error(pccb);
165                                 continue;
166                         }
167                         scsi_dev_desc[scsi_max_devs].lba=capacity;
168                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
169                         scsi_dev_desc[scsi_max_devs].type=perq;
170                         init_part(&scsi_dev_desc[scsi_max_devs]);
171 removable:
172                         if(mode==1) {
173                                 printf ("  Device %d: ", scsi_max_devs);
174                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
175                         } /* if mode */
176                         scsi_max_devs++;
177                 } /* next LUN */
178         }
179         if(scsi_max_devs>0)
180                 scsi_curr_dev=0;
181         else
182                 scsi_curr_dev = -1;
183
184         printf("Found %d device(s).\n", scsi_max_devs);
185         setenv_ulong("scsidevs", scsi_max_devs);
186 }
187
188 int scsi_get_disk_count(void)
189 {
190         return scsi_max_devs;
191 }
192
193 #ifdef CONFIG_PCI
194 void scsi_init(void)
195 {
196         int busdevfunc;
197         int i;
198         /*
199          * Find a device from the list, this driver will support a single
200          * controller.
201          */
202         for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
203                 /* get PCI Device ID */
204                 busdevfunc = pci_find_device(scsi_device_list[i].vendor,
205                                              scsi_device_list[i].device,
206                                              0);
207                 if (busdevfunc != -1)
208                         break;
209         }
210
211         if (busdevfunc == -1) {
212                 printf("Error: SCSI Controller(s) ");
213                 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
214                         printf("%04X:%04X ",
215                                scsi_device_list[i].vendor,
216                                scsi_device_list[i].device);
217                 }
218                 printf("not found\n");
219                 return;
220         }
221 #ifdef DEBUG
222         else {
223                 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
224                        scsi_device_list[i].vendor,
225                        scsi_device_list[i].device,
226                        (busdevfunc >> 16) & 0xFF,
227                        (busdevfunc >> 11) & 0x1F,
228                        (busdevfunc >> 8) & 0x7);
229         }
230 #endif
231         scsi_low_level_init(busdevfunc);
232         scsi_scan(1);
233 }
234 #endif
235
236 #ifdef CONFIG_PARTITIONS
237 block_dev_desc_t * scsi_get_dev(int dev)
238 {
239         return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
240 }
241 #endif
242
243 /******************************************************************************
244  * scsi boot command intepreter. Derived from diskboot
245  */
246 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
247 {
248         return common_diskboot(cmdtp, "scsi", argc, argv);
249 }
250
251 /*********************************************************************************
252  * scsi command intepreter
253  */
254 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
255 {
256         switch (argc) {
257         case 0:
258         case 1:
259                 return CMD_RET_USAGE;
260
261         case 2:
262                         if (strncmp(argv[1],"res",3) == 0) {
263                                 printf("\nReset SCSI\n");
264                                 scsi_bus_reset();
265                                 scsi_scan(1);
266                                 return 0;
267                         }
268                         if (strncmp(argv[1],"inf",3) == 0) {
269                                 int i;
270                                 for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
271                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
272                                                 continue; /* list only known devices */
273                                         printf ("SCSI dev. %d:  ", i);
274                                         dev_print(&scsi_dev_desc[i]);
275                                 }
276                                 return 0;
277                         }
278                         if (strncmp(argv[1],"dev",3) == 0) {
279                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
280                                         printf("\nno SCSI devices available\n");
281                                         return 1;
282                                 }
283                                 printf ("\n    Device %d: ", scsi_curr_dev);
284                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
285                                 return 0;
286                         }
287                         if (strncmp(argv[1],"scan",4) == 0) {
288                                 scsi_scan(1);
289                                 return 0;
290                         }
291                         if (strncmp(argv[1],"part",4) == 0) {
292                                 int dev, ok;
293                                 for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
294                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
295                                                 ok++;
296                                                 if (dev)
297                                                         printf("\n");
298                                                 debug ("print_part of %x\n",dev);
299                                                         print_part(&scsi_dev_desc[dev]);
300                                         }
301                                 }
302                                 if (!ok)
303                                         printf("\nno SCSI devices available\n");
304                                 return 1;
305                         }
306                         return CMD_RET_USAGE;
307         case 3:
308                         if (strncmp(argv[1],"dev",3) == 0) {
309                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
310                                 printf ("\nSCSI device %d: ", dev);
311                                 if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
312                                         printf("unknown device\n");
313                                         return 1;
314                                 }
315                                 printf ("\n    Device %d: ", dev);
316                                 dev_print(&scsi_dev_desc[dev]);
317                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
318                                         return 1;
319                                 }
320                                 scsi_curr_dev = dev;
321                                 printf("... is now current device\n");
322                                 return 0;
323                         }
324                         if (strncmp(argv[1],"part",4) == 0) {
325                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
326                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
327                                         print_part(&scsi_dev_desc[dev]);
328                                 }
329                                 else {
330                                         printf ("\nSCSI device %d not available\n", dev);
331                                 }
332                                 return 1;
333                         }
334                         return CMD_RET_USAGE;
335     default:
336                         /* at least 4 args */
337                         if (strcmp(argv[1],"read") == 0) {
338                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
339                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
340                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
341                                 ulong n;
342                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
343                                                 scsi_curr_dev, blk, cnt);
344                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
345                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
346                                 return 0;
347                         } else if (strcmp(argv[1], "write") == 0) {
348                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
349                                 ulong blk = simple_strtoul(argv[3], NULL, 16);
350                                 ulong cnt = simple_strtoul(argv[4], NULL, 16);
351                                 ulong n;
352                                 printf("\nSCSI write: device %d block # %ld, "
353                                        "count %ld ... ",
354                                        scsi_curr_dev, blk, cnt);
355                                 n = scsi_write(scsi_curr_dev, blk, cnt,
356                                                (ulong *)addr);
357                                 printf("%ld blocks written: %s\n", n,
358                                        (n == cnt) ? "OK" : "ERROR");
359                                 return 0;
360                         }
361         } /* switch */
362         return CMD_RET_USAGE;
363 }
364
365 /****************************************************************************************
366  * scsi_read
367  */
368
369 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
370
371 static ulong scsi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
372 {
373         lbaint_t start, blks;
374         uintptr_t buf_addr;
375         unsigned short smallblks;
376         ccb* pccb=(ccb *)&tempccb;
377         device&=0xff;
378         /* Setup  device
379          */
380         pccb->target=scsi_dev_desc[device].target;
381         pccb->lun=scsi_dev_desc[device].lun;
382         buf_addr=(unsigned long)buffer;
383         start=blknr;
384         blks=blkcnt;
385         debug("\nscsi_read: dev %d startblk " LBAF
386               ", blccnt " LBAF " buffer %lx\n",
387               device, start, blks, (unsigned long)buffer);
388         do {
389                 pccb->pdata=(unsigned char *)buf_addr;
390                 if(blks>SCSI_MAX_READ_BLK) {
391                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
392                         smallblks=SCSI_MAX_READ_BLK;
393                         scsi_setup_read_ext(pccb,start,smallblks);
394                         start+=SCSI_MAX_READ_BLK;
395                         blks-=SCSI_MAX_READ_BLK;
396                 }
397                 else {
398                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
399                         smallblks=(unsigned short) blks;
400                         scsi_setup_read_ext(pccb,start,smallblks);
401                         start+=blks;
402                         blks=0;
403                 }
404                 debug("scsi_read_ext: startblk " LBAF
405                       ", blccnt %x buffer %lx\n",
406                       start, smallblks, buf_addr);
407                 if (scsi_exec(pccb) != true) {
408                         scsi_print_error(pccb);
409                         blkcnt-=blks;
410                         break;
411                 }
412                 buf_addr+=pccb->datalen;
413         } while(blks!=0);
414         debug("scsi_read_ext: end startblk " LBAF
415               ", blccnt %x buffer %lx\n", start, smallblks, buf_addr);
416         return(blkcnt);
417 }
418
419 /*******************************************************************************
420  * scsi_write
421  */
422
423 /* Almost the maximum amount of the scsi_ext command.. */
424 #define SCSI_MAX_WRITE_BLK 0xFFFF
425
426 static ulong scsi_write(int device, ulong blknr,
427                         lbaint_t blkcnt, const void *buffer)
428 {
429         lbaint_t start, blks;
430         uintptr_t buf_addr;
431         unsigned short smallblks;
432         ccb* pccb = (ccb *)&tempccb;
433         device &= 0xff;
434         /* Setup  device
435          */
436         pccb->target = scsi_dev_desc[device].target;
437         pccb->lun = scsi_dev_desc[device].lun;
438         buf_addr = (unsigned long)buffer;
439         start = blknr;
440         blks = blkcnt;
441         debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
442               __func__, device, start, blks, (unsigned long)buffer);
443         do {
444                 pccb->pdata = (unsigned char *)buf_addr;
445                 if (blks > SCSI_MAX_WRITE_BLK) {
446                         pccb->datalen = (scsi_dev_desc[device].blksz *
447                                          SCSI_MAX_WRITE_BLK);
448                         smallblks = SCSI_MAX_WRITE_BLK;
449                         scsi_setup_write_ext(pccb, start, smallblks);
450                         start += SCSI_MAX_WRITE_BLK;
451                         blks -= SCSI_MAX_WRITE_BLK;
452                 } else {
453                         pccb->datalen = scsi_dev_desc[device].blksz * blks;
454                         smallblks = (unsigned short)blks;
455                         scsi_setup_write_ext(pccb, start, smallblks);
456                         start += blks;
457                         blks = 0;
458                 }
459                 debug("%s: startblk " LBAF ", blccnt %x buffer %lx\n",
460                       __func__, start, smallblks, buf_addr);
461                 if (scsi_exec(pccb) != true) {
462                         scsi_print_error(pccb);
463                         blkcnt -= blks;
464                         break;
465                 }
466                 buf_addr += pccb->datalen;
467         } while (blks != 0);
468         debug("%s: end startblk " LBAF ", blccnt %x buffer %lx\n",
469               __func__, start, smallblks, buf_addr);
470         return blkcnt;
471 }
472
473 /* copy src to dest, skipping leading and trailing blanks
474  * and null terminate the string
475  */
476 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
477 {
478         int start,end;
479
480         start=0;
481         while(start<len) {
482                 if(src[start]!=' ')
483                         break;
484                 start++;
485         }
486         end=len-1;
487         while(end>start) {
488                 if(src[end]!=' ')
489                         break;
490                 end--;
491         }
492         for( ; start<=end; start++) {
493                 *dest++=src[start];
494         }
495         *dest='\0';
496 }
497
498
499 /* Trim trailing blanks, and NUL-terminate string
500  */
501 void scsi_trim_trail (unsigned char *str, unsigned int len)
502 {
503         unsigned char *p = str + len - 1;
504
505         while (len-- > 0) {
506                 *p-- = '\0';
507                 if (*p != ' ') {
508                         return;
509                 }
510         }
511 }
512
513 int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
514 {
515         *capacity = 0;
516
517         memset(pccb->cmd, 0, sizeof(pccb->cmd));
518         pccb->cmd[0] = SCSI_RD_CAPAC10;
519         pccb->cmd[1] = pccb->lun << 5;
520         pccb->cmdlen = 10;
521         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
522
523         pccb->datalen = 8;
524         if (scsi_exec(pccb) != true)
525                 return 1;
526
527         *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
528                     ((lbaint_t)pccb->pdata[1] << 16) |
529                     ((lbaint_t)pccb->pdata[2] << 8)  |
530                     ((lbaint_t)pccb->pdata[3]);
531
532         if (*capacity != 0xffffffff) {
533                 /* Read capacity (10) was sufficient for this drive. */
534                 *blksz = ((unsigned long)pccb->pdata[4] << 24) |
535                          ((unsigned long)pccb->pdata[5] << 16) |
536                          ((unsigned long)pccb->pdata[6] << 8)  |
537                          ((unsigned long)pccb->pdata[7]);
538                 return 0;
539         }
540
541         /* Read capacity (10) was insufficient. Use read capacity (16). */
542
543         memset(pccb->cmd, 0, sizeof(pccb->cmd));
544         pccb->cmd[0] = SCSI_RD_CAPAC16;
545         pccb->cmd[1] = 0x10;
546         pccb->cmdlen = 16;
547         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
548
549         pccb->datalen = 16;
550         if (scsi_exec(pccb) != true)
551                 return 1;
552
553         *capacity = ((uint64_t)pccb->pdata[0] << 56) |
554                     ((uint64_t)pccb->pdata[1] << 48) |
555                     ((uint64_t)pccb->pdata[2] << 40) |
556                     ((uint64_t)pccb->pdata[3] << 32) |
557                     ((uint64_t)pccb->pdata[4] << 24) |
558                     ((uint64_t)pccb->pdata[5] << 16) |
559                     ((uint64_t)pccb->pdata[6] << 8)  |
560                     ((uint64_t)pccb->pdata[7]);
561
562         *blksz = ((uint64_t)pccb->pdata[8]  << 56) |
563                  ((uint64_t)pccb->pdata[9]  << 48) |
564                  ((uint64_t)pccb->pdata[10] << 40) |
565                  ((uint64_t)pccb->pdata[11] << 32) |
566                  ((uint64_t)pccb->pdata[12] << 24) |
567                  ((uint64_t)pccb->pdata[13] << 16) |
568                  ((uint64_t)pccb->pdata[14] << 8)  |
569                  ((uint64_t)pccb->pdata[15]);
570
571         return 0;
572 }
573
574
575 /************************************************************************************
576  * Some setup (fill-in) routines
577  */
578 void scsi_setup_test_unit_ready(ccb * pccb)
579 {
580         pccb->cmd[0]=SCSI_TST_U_RDY;
581         pccb->cmd[1]=pccb->lun<<5;
582         pccb->cmd[2]=0;
583         pccb->cmd[3]=0;
584         pccb->cmd[4]=0;
585         pccb->cmd[5]=0;
586         pccb->cmdlen=6;
587         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
588 }
589
590 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
591 {
592         pccb->cmd[0]=SCSI_READ10;
593         pccb->cmd[1]=pccb->lun<<5;
594         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
595         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
596         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
597         pccb->cmd[5]=((unsigned char) (start))&0xff;
598         pccb->cmd[6]=0;
599         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
600         pccb->cmd[8]=(unsigned char) blocks & 0xff;
601         pccb->cmd[6]=0;
602         pccb->cmdlen=10;
603         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
604         debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
605                 pccb->cmd[0],pccb->cmd[1],
606                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
607                 pccb->cmd[7],pccb->cmd[8]);
608 }
609
610 void scsi_setup_write_ext(ccb *pccb, unsigned long start, unsigned short blocks)
611 {
612         pccb->cmd[0] = SCSI_WRITE10;
613         pccb->cmd[1] = pccb->lun << 5;
614         pccb->cmd[2] = ((unsigned char) (start>>24)) & 0xff;
615         pccb->cmd[3] = ((unsigned char) (start>>16)) & 0xff;
616         pccb->cmd[4] = ((unsigned char) (start>>8)) & 0xff;
617         pccb->cmd[5] = ((unsigned char) (start)) & 0xff;
618         pccb->cmd[6] = 0;
619         pccb->cmd[7] = ((unsigned char) (blocks>>8)) & 0xff;
620         pccb->cmd[8] = (unsigned char)blocks & 0xff;
621         pccb->cmd[9] = 0;
622         pccb->cmdlen = 10;
623         pccb->msgout[0] = SCSI_IDENTIFY;  /* NOT USED */
624         debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
625               __func__,
626               pccb->cmd[0], pccb->cmd[1],
627               pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
628               pccb->cmd[7], pccb->cmd[8]);
629 }
630
631 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
632 {
633         pccb->cmd[0]=SCSI_READ6;
634         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
635         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
636         pccb->cmd[3]=((unsigned char) (start))&0xff;
637         pccb->cmd[4]=(unsigned char) blocks & 0xff;
638         pccb->cmd[5]=0;
639         pccb->cmdlen=6;
640         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
641         debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
642                 pccb->cmd[0],pccb->cmd[1],
643                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
644 }
645
646
647 void scsi_setup_inquiry(ccb * pccb)
648 {
649         pccb->cmd[0]=SCSI_INQUIRY;
650         pccb->cmd[1]=pccb->lun<<5;
651         pccb->cmd[2]=0;
652         pccb->cmd[3]=0;
653         if(pccb->datalen>255)
654                 pccb->cmd[4]=255;
655         else
656                 pccb->cmd[4]=(unsigned char)pccb->datalen;
657         pccb->cmd[5]=0;
658         pccb->cmdlen=6;
659         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
660 }
661
662
663 U_BOOT_CMD(
664         scsi, 5, 1, do_scsi,
665         "SCSI sub-system",
666         "reset - reset SCSI controller\n"
667         "scsi info  - show available SCSI devices\n"
668         "scsi scan  - (re-)scan SCSI bus\n"
669         "scsi device [dev] - show or set current device\n"
670         "scsi part [dev] - print partition table of one or all SCSI devices\n"
671         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
672         "     to memory address `addr'\n"
673         "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
674         "     `blk#' from memory address `addr'"
675 );
676
677 U_BOOT_CMD(
678         scsiboot, 3, 1, do_scsiboot,
679         "boot from SCSI device",
680         "loadAddr dev:part"
681 );