3 * Denis Peter, MPL AG Switzerland
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
32 #include <asm/processor.h>
37 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
39 #ifdef CONFIG_SCSI_SYM53C8XX
40 #define SCSI_VEND_ID 0x1000
41 #ifndef CONFIG_SCSI_DEV_ID
42 #define SCSI_DEV_ID 0x0001
44 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
47 #error CONFIG_SCSI_SYM53C8XX must be defined
51 static ccb tempccb
; /* temporary scsi command buffer */
53 static unsigned char tempbuff
[512]; /* temporary data buffer */
55 static int scsi_max_devs
; /* number of highest available scsi device */
57 static int scsi_curr_dev
; /* current device */
59 static block_dev_desc_t scsi_dev_desc
[CFG_SCSI_MAX_DEVICE
];
61 /********************************************************************************
62 * forward declerations of some Setup Routines
64 void scsi_setup_test_unit_ready(ccb
* pccb
);
65 void scsi_setup_read_capacity(ccb
* pccb
);
66 void scsi_setup_read6(ccb
* pccb
, unsigned long start
, unsigned short blocks
);
67 void scsi_setup_read_ext(ccb
* pccb
, unsigned long start
, unsigned short blocks
);
68 void scsi_setup_inquiry(ccb
* pccb
);
69 void scsi_ident_cpy (unsigned char *dest
, unsigned char *src
, unsigned int len
);
72 ulong
scsi_read(int device
, ulong blknr
, ulong blkcnt
, ulong
*buffer
);
75 /*********************************************************************************
76 * (re)-scan the scsi bus and reports scsi device info
77 * to the user if mode = 1
79 void scsi_scan(int mode
)
81 unsigned char i
,perq
,modi
,lun
;
82 unsigned long capacity
,blksz
;
83 ccb
* pccb
=(ccb
*)&tempccb
;
86 printf("scanning bus for devices...\n");
88 for(i
=0;i
<CFG_SCSI_MAX_DEVICE
;i
++) {
89 scsi_dev_desc
[i
].target
=0xff;
90 scsi_dev_desc
[i
].lun
=0xff;
91 scsi_dev_desc
[i
].lba
=0;
92 scsi_dev_desc
[i
].blksz
=0;
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
;
104 for(i
=0;i
<CFG_SCSI_MAX_SCSI_ID
;i
++) {
106 for(lun
=0;lun
<CFG_SCSI_MAX_LUN
;lun
++) {
108 pccb
->pdata
=(unsigned char *)&tempbuff
;
110 scsi_setup_inquiry(pccb
);
111 if(scsi_exec(pccb
)!=TRUE
) {
112 if(pccb
->contr_stat
==SCSI_SEL_TIME_OUT
) {
113 debug ("Selection timeout ID %d\n",pccb
->target
);
114 continue; /* selection timeout => assuming no device present */
116 scsi_print_error(pccb
);
121 if((perq
& 0x1f)==0x1f) {
122 continue; /* skip unknown devices */
124 if((modi
&0x80)==0x80) /* drive is removable */
125 scsi_dev_desc
[scsi_max_devs
].removable
=TRUE
;
126 /* get info for this device */
127 scsi_ident_cpy(&scsi_dev_desc
[scsi_max_devs
].vendor
[0],&tempbuff
[8],8);
128 scsi_ident_cpy(&scsi_dev_desc
[scsi_max_devs
].product
[0],&tempbuff
[16],16);
129 scsi_ident_cpy(&scsi_dev_desc
[scsi_max_devs
].revision
[0],&tempbuff
[32],4);
130 scsi_dev_desc
[scsi_max_devs
].target
=pccb
->target
;
131 scsi_dev_desc
[scsi_max_devs
].lun
=pccb
->lun
;
134 scsi_setup_test_unit_ready(pccb
);
135 if(scsi_exec(pccb
)!=TRUE
) {
136 if(scsi_dev_desc
[scsi_max_devs
].removable
==TRUE
) {
137 scsi_dev_desc
[scsi_max_devs
].type
=perq
;
140 scsi_print_error(pccb
);
144 scsi_setup_read_capacity(pccb
);
145 if(scsi_exec(pccb
)!=TRUE
) {
146 scsi_print_error(pccb
);
149 capacity
=((unsigned long)tempbuff
[0]<<24)|((unsigned long)tempbuff
[1]<<16)|
150 ((unsigned long)tempbuff
[2]<<8)|((unsigned long)tempbuff
[3]);
151 blksz
=((unsigned long)tempbuff
[4]<<24)|((unsigned long)tempbuff
[5]<<16)|
152 ((unsigned long)tempbuff
[6]<<8)|((unsigned long)tempbuff
[7]);
153 scsi_dev_desc
[scsi_max_devs
].lba
=capacity
;
154 scsi_dev_desc
[scsi_max_devs
].blksz
=blksz
;
155 scsi_dev_desc
[scsi_max_devs
].type
=perq
;
156 init_part(&scsi_dev_desc
[scsi_max_devs
]);
159 printf (" Device %d: ", scsi_max_devs
);
160 dev_print(&scsi_dev_desc
[scsi_max_devs
]);
176 busdevfunc
=pci_find_device(SCSI_VEND_ID
,SCSI_DEV_ID
,0); /* get PCI Device ID */
178 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID
,SCSI_DEV_ID
);
183 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);
186 scsi_low_level_init(busdevfunc
);
190 block_dev_desc_t
* scsi_get_dev(int dev
)
192 return((block_dev_desc_t
*)&scsi_dev_desc
[dev
]);
196 /******************************************************************************
197 * scsi boot command intepreter. Derived from diskboot
199 int do_scsiboot (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
201 char *boot_device
= NULL
;
204 ulong addr
, cnt
, checksum
;
205 disk_partition_t info
;
211 addr
= CFG_LOAD_ADDR
;
212 boot_device
= getenv ("bootdevice");
215 addr
= simple_strtoul(argv
[1], NULL
, 16);
216 boot_device
= getenv ("bootdevice");
219 addr
= simple_strtoul(argv
[1], NULL
, 16);
220 boot_device
= argv
[2];
223 printf ("Usage:\n%s\n", cmdtp
->usage
);
228 puts ("\n** No boot device **\n");
232 dev
= simple_strtoul(boot_device
, &ep
, 16);
233 printf("booting from dev %d\n",dev
);
234 if (scsi_dev_desc
[dev
].type
== DEV_TYPE_UNKNOWN
) {
235 printf ("\n** Device %d not available\n", dev
);
241 puts ("\n** Invalid boot device, use `dev[:part]' **\n");
244 part
= simple_strtoul(++ep
, NULL
, 16);
246 if (get_partition_info (scsi_dev_desc
, part
, &info
)) {
247 printf("error reading partinfo\n");
250 if ((strncmp((char *)(info
.type
), BOOT_PART_TYPE
, sizeof(info
.type
)) != 0) &&
251 (strncmp((char *)(info
.type
), BOOT_PART_COMP
, sizeof(info
.type
)) != 0)) {
252 printf ("\n** Invalid partition type \"%.32s\""
253 " (expect \"" BOOT_PART_TYPE
"\")\n",
258 printf ("\nLoading from SCSI device %d, partition %d: "
259 "Name: %.32s Type: %.32s\n",
260 dev
, part
, info
.name
, info
.type
);
262 debug ("First Block: %ld, # of blocks: %ld, Block Size: %ld\n",
263 info
.start
, info
.size
, info
.blksz
);
265 if (scsi_read (dev
, info
.start
, 1, (ulong
*)addr
) != 1) {
266 printf ("** Read error on %d:%d\n", dev
, part
);
270 hdr
= (image_header_t
*)addr
;
272 if (ntohl(hdr
->ih_magic
) == IH_MAGIC
) {
273 printf("\n** Bad Magic Number **\n");
277 checksum
= ntohl(hdr
->ih_hcrc
);
280 if (crc32 (0, (uchar
*)hdr
, sizeof(image_header_t
)) != checksum
) {
281 puts ("\n** Bad Header Checksum **\n");
284 hdr
->ih_hcrc
= htonl(checksum
); /* restore checksum for later use */
286 print_image_hdr (hdr
);
287 cnt
= (ntohl(hdr
->ih_size
) + sizeof(image_header_t
));
288 cnt
+= info
.blksz
- 1;
292 if (scsi_read (dev
, info
.start
+1, cnt
,
293 (ulong
*)(addr
+info
.blksz
)) != cnt
) {
294 printf ("** Read error on %d:%d\n", dev
, part
);
297 /* Loading ok, update default load address */
300 flush_cache (addr
, (cnt
+1)*info
.blksz
);
302 /* Check if we should attempt an auto-start */
303 if (((ep
= getenv("autostart")) != NULL
) && (strcmp(ep
,"yes") == 0)) {
305 extern int do_bootm (cmd_tbl_t
*, int, int, char *[]);
306 local_args
[0] = argv
[0];
307 local_args
[1] = NULL
;
308 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr
);
309 rcode
= do_bootm (cmdtp
, 0, 1, local_args
);
314 /*********************************************************************************
315 * scsi command intepreter
317 int do_scsi (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
321 case 1: printf ("Usage:\n%s\n", cmdtp
->usage
); return 1;
323 if (strncmp(argv
[1],"res",3) == 0) {
324 printf("\nReset SCSI\n");
329 if (strncmp(argv
[1],"inf",3) == 0) {
331 for (i
=0; i
<CFG_SCSI_MAX_DEVICE
; ++i
) {
332 if(scsi_dev_desc
[i
].type
==DEV_TYPE_UNKNOWN
)
333 continue; /* list only known devices */
334 printf ("SCSI dev. %d: ", i
);
335 dev_print(&scsi_dev_desc
[i
]);
339 if (strncmp(argv
[1],"dev",3) == 0) {
340 if ((scsi_curr_dev
< 0) || (scsi_curr_dev
>= CFG_SCSI_MAX_DEVICE
)) {
341 printf("\nno SCSI devices available\n");
344 printf ("\n Device %d: ", scsi_curr_dev
);
345 dev_print(&scsi_dev_desc
[scsi_curr_dev
]);
348 if (strncmp(argv
[1],"scan",4) == 0) {
352 if (strncmp(argv
[1],"part",4) == 0) {
354 for (ok
=0, dev
=0; dev
<CFG_SCSI_MAX_DEVICE
; ++dev
) {
355 if (scsi_dev_desc
[dev
].type
!=DEV_TYPE_UNKNOWN
) {
359 debug ("print_part of %x\n",dev
);
360 print_part(&scsi_dev_desc
[dev
]);
364 printf("\nno SCSI devices available\n");
367 printf ("Usage:\n%s\n", cmdtp
->usage
);
370 if (strncmp(argv
[1],"dev",3) == 0) {
371 int dev
= (int)simple_strtoul(argv
[2], NULL
, 10);
372 printf ("\nSCSI device %d: ", dev
);
373 if (dev
>= CFG_SCSI_MAX_DEVICE
) {
374 printf("unknown device\n");
377 printf ("\n Device %d: ", dev
);
378 dev_print(&scsi_dev_desc
[dev
]);
379 if(scsi_dev_desc
[dev
].type
== DEV_TYPE_UNKNOWN
) {
383 printf("... is now current device\n");
386 if (strncmp(argv
[1],"part",4) == 0) {
387 int dev
= (int)simple_strtoul(argv
[2], NULL
, 10);
388 if(scsi_dev_desc
[dev
].type
!= DEV_TYPE_UNKNOWN
) {
389 print_part(&scsi_dev_desc
[dev
]);
392 printf ("\nSCSI device %d not available\n", dev
);
396 printf ("Usage:\n%s\n", cmdtp
->usage
);
399 /* at least 4 args */
400 if (strcmp(argv
[1],"read") == 0) {
401 ulong addr
= simple_strtoul(argv
[2], NULL
, 16);
402 ulong blk
= simple_strtoul(argv
[3], NULL
, 16);
403 ulong cnt
= simple_strtoul(argv
[4], NULL
, 16);
405 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
406 scsi_curr_dev
, blk
, cnt
);
407 n
= scsi_read(scsi_curr_dev
, blk
, cnt
, (ulong
*)addr
);
408 printf ("%ld blocks read: %s\n",n
,(n
==cnt
) ? "OK" : "ERROR");
412 printf ("Usage:\n%s\n", cmdtp
->usage
);
416 /****************************************************************************************
420 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
422 ulong
scsi_read(int device
, ulong blknr
, ulong blkcnt
, ulong
*buffer
)
424 ulong start
,blks
, buf_addr
;
425 unsigned short smallblks
;
426 ccb
* pccb
=(ccb
*)&tempccb
;
430 pccb
->target
=scsi_dev_desc
[device
].target
;
431 pccb
->lun
=scsi_dev_desc
[device
].lun
;
432 buf_addr
=(unsigned long)buffer
;
435 debug ("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device
,start
,blks
,(unsigned long)buffer
);
437 pccb
->pdata
=(unsigned char *)buf_addr
;
438 if(blks
>SCSI_MAX_READ_BLK
) {
439 pccb
->datalen
=scsi_dev_desc
[device
].blksz
* SCSI_MAX_READ_BLK
;
440 smallblks
=SCSI_MAX_READ_BLK
;
441 scsi_setup_read_ext(pccb
,start
,smallblks
);
442 start
+=SCSI_MAX_READ_BLK
;
443 blks
-=SCSI_MAX_READ_BLK
;
446 pccb
->datalen
=scsi_dev_desc
[device
].blksz
* blks
;
447 smallblks
=(unsigned short) blks
;
448 scsi_setup_read_ext(pccb
,start
,smallblks
);
452 debug ("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start
,smallblks
,buf_addr
);
453 if(scsi_exec(pccb
)!=TRUE
) {
454 scsi_print_error(pccb
);
458 buf_addr
+=pccb
->datalen
;
460 debug ("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start
,smallblks
,buf_addr
);
464 /* copy src to dest, skipping leading and trailing blanks
465 * and null terminate the string
467 void scsi_ident_cpy (unsigned char *dest
, unsigned char *src
, unsigned int len
)
483 for( ; start
<=end
; start
++) {
490 /* Trim trailing blanks, and NUL-terminate string
492 void scsi_trim_trail (unsigned char *str
, unsigned int len
)
494 unsigned char *p
= str
+ len
- 1;
505 /************************************************************************************
506 * Some setup (fill-in) routines
508 void scsi_setup_test_unit_ready(ccb
* pccb
)
510 pccb
->cmd
[0]=SCSI_TST_U_RDY
;
511 pccb
->cmd
[1]=pccb
->lun
<<5;
517 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
520 void scsi_setup_read_capacity(ccb
* pccb
)
522 pccb
->cmd
[0]=SCSI_RD_CAPAC
;
523 pccb
->cmd
[1]=pccb
->lun
<<5;
533 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
537 void scsi_setup_read_ext(ccb
* pccb
, unsigned long start
, unsigned short blocks
)
539 pccb
->cmd
[0]=SCSI_READ10
;
540 pccb
->cmd
[1]=pccb
->lun
<<5;
541 pccb
->cmd
[2]=((unsigned char) (start
>>24))&0xff;
542 pccb
->cmd
[3]=((unsigned char) (start
>>16))&0xff;
543 pccb
->cmd
[4]=((unsigned char) (start
>>8))&0xff;
544 pccb
->cmd
[5]=((unsigned char) (start
))&0xff;
546 pccb
->cmd
[7]=((unsigned char) (blocks
>>8))&0xff;
547 pccb
->cmd
[8]=(unsigned char) blocks
& 0xff;
550 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
551 debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
552 pccb
->cmd
[0],pccb
->cmd
[1],
553 pccb
->cmd
[2],pccb
->cmd
[3],pccb
->cmd
[4],pccb
->cmd
[5],
554 pccb
->cmd
[7],pccb
->cmd
[8]);
557 void scsi_setup_read6(ccb
* pccb
, unsigned long start
, unsigned short blocks
)
559 pccb
->cmd
[0]=SCSI_READ6
;
560 pccb
->cmd
[1]=pccb
->lun
<<5 | (((unsigned char)(start
>>16))&0x1f);
561 pccb
->cmd
[2]=((unsigned char) (start
>>8))&0xff;
562 pccb
->cmd
[3]=((unsigned char) (start
))&0xff;
563 pccb
->cmd
[4]=(unsigned char) blocks
& 0xff;
566 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
567 debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
568 pccb
->cmd
[0],pccb
->cmd
[1],
569 pccb
->cmd
[2],pccb
->cmd
[3],pccb
->cmd
[4]);
573 void scsi_setup_inquiry(ccb
* pccb
)
575 pccb
->cmd
[0]=SCSI_INQUIRY
;
576 pccb
->cmd
[1]=pccb
->lun
<<5;
579 if(pccb
->datalen
>255)
582 pccb
->cmd
[4]=(unsigned char)pccb
->datalen
;
585 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
591 "scsi - SCSI sub-system\n",
592 "reset - reset SCSI controller\n"
593 "scsi info - show available SCSI devices\n"
594 "scsi scan - (re-)scan SCSI bus\n"
595 "scsi device [dev] - show or set current device\n"
596 "scsi part [dev] - print partition table of one or all SCSI devices\n"
597 "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
598 " to memory address `addr'\n"
602 scsiboot
, 3, 1, do_scsiboot
,
603 "scsiboot- boot from SCSI device\n",
604 "loadAddr dev:part\n"
607 #endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */