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 #ifdef CONFIG_SCSI_SYM53C8XX
38 #define SCSI_VEND_ID 0x1000
39 #ifndef CONFIG_SCSI_DEV_ID
40 #define SCSI_DEV_ID 0x0001
42 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
44 #elif defined CONFIG_SATA_ULI5288
46 #define SCSI_VEND_ID 0x10b9
47 #define SCSI_DEV_ID 0x5288
50 #error no scsi device defined
54 static ccb tempccb; /* temporary scsi command buffer */
56 static unsigned char tempbuff[512]; /* temporary data buffer */
58 static int scsi_max_devs; /* number of highest available scsi device */
60 static int scsi_curr_dev; /* current device */
62 static block_dev_desc_t scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
64 /********************************************************************************
65 * forward declerations of some Setup Routines
67 void scsi_setup_test_unit_ready(ccb * pccb);
68 void scsi_setup_read_capacity(ccb * pccb);
69 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
70 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
71 void scsi_setup_inquiry(ccb * pccb);
72 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
75 ulong scsi_read(int device, ulong blknr, ulong blkcnt, void *buffer);
78 /*********************************************************************************
79 * (re)-scan the scsi bus and reports scsi device info
80 * to the user if mode = 1
82 void scsi_scan(int mode)
84 unsigned char i,perq,modi,lun;
85 unsigned long capacity,blksz;
86 ccb* pccb=(ccb *)&tempccb;
89 printf("scanning bus for devices...\n");
91 for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
92 scsi_dev_desc[i].target=0xff;
93 scsi_dev_desc[i].lun=0xff;
94 scsi_dev_desc[i].lba=0;
95 scsi_dev_desc[i].blksz=0;
96 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
97 scsi_dev_desc[i].vendor[0]=0;
98 scsi_dev_desc[i].product[0]=0;
99 scsi_dev_desc[i].revision[0]=0;
100 scsi_dev_desc[i].removable=FALSE;
101 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
102 scsi_dev_desc[i].dev=i;
103 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
104 scsi_dev_desc[i].block_read=scsi_read;
107 for(i=0;i<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
109 for(lun=0;lun<CONFIG_SYS_SCSI_MAX_LUN;lun++) {
111 pccb->pdata=(unsigned char *)&tempbuff;
113 scsi_setup_inquiry(pccb);
114 if(scsi_exec(pccb)!=TRUE) {
115 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
116 debug ("Selection timeout ID %d\n",pccb->target);
117 continue; /* selection timeout => assuming no device present */
119 scsi_print_error(pccb);
124 if((perq & 0x1f)==0x1f) {
125 continue; /* skip unknown devices */
127 if((modi&0x80)==0x80) /* drive is removable */
128 scsi_dev_desc[scsi_max_devs].removable=TRUE;
129 /* get info for this device */
130 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
132 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
134 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
136 scsi_dev_desc[scsi_max_devs].target=pccb->target;
137 scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
140 scsi_setup_test_unit_ready(pccb);
141 if(scsi_exec(pccb)!=TRUE) {
142 if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
143 scsi_dev_desc[scsi_max_devs].type=perq;
146 scsi_print_error(pccb);
150 scsi_setup_read_capacity(pccb);
151 if(scsi_exec(pccb)!=TRUE) {
152 scsi_print_error(pccb);
155 capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
156 ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
157 blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
158 ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
159 scsi_dev_desc[scsi_max_devs].lba=capacity;
160 scsi_dev_desc[scsi_max_devs].blksz=blksz;
161 scsi_dev_desc[scsi_max_devs].type=perq;
162 init_part(&scsi_dev_desc[scsi_max_devs]);
165 printf (" Device %d: ", scsi_max_devs);
166 dev_print(&scsi_dev_desc[scsi_max_devs]);
182 busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
184 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
189 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);
192 scsi_low_level_init(busdevfunc);
196 block_dev_desc_t * scsi_get_dev(int dev)
198 return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
202 /******************************************************************************
203 * scsi boot command intepreter. Derived from diskboot
205 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
207 char *boot_device = NULL;
211 disk_partition_t info;
213 #if defined(CONFIG_FIT)
214 const void *fit_hdr = NULL;
219 addr = CONFIG_SYS_LOAD_ADDR;
220 boot_device = getenv ("bootdevice");
223 addr = simple_strtoul(argv[1], NULL, 16);
224 boot_device = getenv ("bootdevice");
227 addr = simple_strtoul(argv[1], NULL, 16);
228 boot_device = argv[2];
231 return cmd_usage(cmdtp);
235 puts ("\n** No boot device **\n");
239 dev = simple_strtoul(boot_device, &ep, 16);
240 printf("booting from dev %d\n",dev);
241 if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
242 printf ("\n** Device %d not available\n", dev);
248 puts ("\n** Invalid boot device, use `dev[:part]' **\n");
251 part = simple_strtoul(++ep, NULL, 16);
253 if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
254 printf("error reading partinfo\n");
257 if ((strncmp((char *)(info.type), BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
258 (strncmp((char *)(info.type), BOOT_PART_COMP, sizeof(info.type)) != 0)) {
259 printf ("\n** Invalid partition type \"%.32s\""
260 " (expect \"" BOOT_PART_TYPE "\")\n",
265 printf ("\nLoading from SCSI device %d, partition %d: "
266 "Name: %.32s Type: %.32s\n",
267 dev, part, info.name, info.type);
269 debug ("First Block: %ld, # of blocks: %ld, Block Size: %ld\n",
270 info.start, info.size, info.blksz);
272 if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
273 printf ("** Read error on %d:%d\n", dev, part);
277 switch (genimg_get_format ((void *)addr)) {
278 case IMAGE_FORMAT_LEGACY:
279 hdr = (image_header_t *)addr;
281 if (!image_check_hcrc (hdr)) {
282 puts ("\n** Bad Header Checksum **\n");
286 image_print_contents (hdr);
287 cnt = image_get_image_size (hdr);
289 #if defined(CONFIG_FIT)
290 case IMAGE_FORMAT_FIT:
291 fit_hdr = (const void *)addr;
292 puts ("Fit image detected...\n");
294 cnt = fit_get_size (fit_hdr);
298 puts ("** Unknown image type\n");
302 cnt += info.blksz - 1;
306 if (scsi_read (dev, info.start+1, cnt,
307 (ulong *)(addr+info.blksz)) != cnt) {
308 printf ("** Read error on %d:%d\n", dev, part);
312 #if defined(CONFIG_FIT)
313 /* This cannot be done earlier, we need complete FIT image in RAM first */
314 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
315 if (!fit_check_format (fit_hdr)) {
316 puts ("** Bad FIT image format\n");
319 fit_print_contents (fit_hdr);
323 /* Loading ok, update default load address */
326 flush_cache (addr, (cnt+1)*info.blksz);
328 return bootm_maybe_autostart(cmdtp, argv[0]);
331 /*********************************************************************************
332 * scsi command intepreter
334 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
338 case 1: return cmd_usage(cmdtp);
341 if (strncmp(argv[1],"res",3) == 0) {
342 printf("\nReset SCSI\n");
347 if (strncmp(argv[1],"inf",3) == 0) {
349 for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
350 if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
351 continue; /* list only known devices */
352 printf ("SCSI dev. %d: ", i);
353 dev_print(&scsi_dev_desc[i]);
357 if (strncmp(argv[1],"dev",3) == 0) {
358 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
359 printf("\nno SCSI devices available\n");
362 printf ("\n Device %d: ", scsi_curr_dev);
363 dev_print(&scsi_dev_desc[scsi_curr_dev]);
366 if (strncmp(argv[1],"scan",4) == 0) {
370 if (strncmp(argv[1],"part",4) == 0) {
372 for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
373 if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
377 debug ("print_part of %x\n",dev);
378 print_part(&scsi_dev_desc[dev]);
382 printf("\nno SCSI devices available\n");
385 return cmd_usage(cmdtp);
387 if (strncmp(argv[1],"dev",3) == 0) {
388 int dev = (int)simple_strtoul(argv[2], NULL, 10);
389 printf ("\nSCSI device %d: ", dev);
390 if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
391 printf("unknown device\n");
394 printf ("\n Device %d: ", dev);
395 dev_print(&scsi_dev_desc[dev]);
396 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
400 printf("... is now current device\n");
403 if (strncmp(argv[1],"part",4) == 0) {
404 int dev = (int)simple_strtoul(argv[2], NULL, 10);
405 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
406 print_part(&scsi_dev_desc[dev]);
409 printf ("\nSCSI device %d not available\n", dev);
413 return cmd_usage(cmdtp);
415 /* at least 4 args */
416 if (strcmp(argv[1],"read") == 0) {
417 ulong addr = simple_strtoul(argv[2], NULL, 16);
418 ulong blk = simple_strtoul(argv[3], NULL, 16);
419 ulong cnt = simple_strtoul(argv[4], NULL, 16);
421 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
422 scsi_curr_dev, blk, cnt);
423 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
424 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
428 return cmd_usage(cmdtp);
431 /****************************************************************************************
435 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
437 ulong scsi_read(int device, ulong blknr, ulong blkcnt, void *buffer)
439 ulong start,blks, buf_addr;
440 unsigned short smallblks;
441 ccb* pccb=(ccb *)&tempccb;
445 pccb->target=scsi_dev_desc[device].target;
446 pccb->lun=scsi_dev_desc[device].lun;
447 buf_addr=(unsigned long)buffer;
450 debug ("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
452 pccb->pdata=(unsigned char *)buf_addr;
453 if(blks>SCSI_MAX_READ_BLK) {
454 pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
455 smallblks=SCSI_MAX_READ_BLK;
456 scsi_setup_read_ext(pccb,start,smallblks);
457 start+=SCSI_MAX_READ_BLK;
458 blks-=SCSI_MAX_READ_BLK;
461 pccb->datalen=scsi_dev_desc[device].blksz * blks;
462 smallblks=(unsigned short) blks;
463 scsi_setup_read_ext(pccb,start,smallblks);
467 debug ("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
468 if(scsi_exec(pccb)!=TRUE) {
469 scsi_print_error(pccb);
473 buf_addr+=pccb->datalen;
475 debug ("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
479 /* copy src to dest, skipping leading and trailing blanks
480 * and null terminate the string
482 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
498 for( ; start<=end; start++) {
505 /* Trim trailing blanks, and NUL-terminate string
507 void scsi_trim_trail (unsigned char *str, unsigned int len)
509 unsigned char *p = str + len - 1;
520 /************************************************************************************
521 * Some setup (fill-in) routines
523 void scsi_setup_test_unit_ready(ccb * pccb)
525 pccb->cmd[0]=SCSI_TST_U_RDY;
526 pccb->cmd[1]=pccb->lun<<5;
532 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
535 void scsi_setup_read_capacity(ccb * pccb)
537 pccb->cmd[0]=SCSI_RD_CAPAC;
538 pccb->cmd[1]=pccb->lun<<5;
548 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
552 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
554 pccb->cmd[0]=SCSI_READ10;
555 pccb->cmd[1]=pccb->lun<<5;
556 pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
557 pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
558 pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
559 pccb->cmd[5]=((unsigned char) (start))&0xff;
561 pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
562 pccb->cmd[8]=(unsigned char) blocks & 0xff;
565 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
566 debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
567 pccb->cmd[0],pccb->cmd[1],
568 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
569 pccb->cmd[7],pccb->cmd[8]);
572 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
574 pccb->cmd[0]=SCSI_READ6;
575 pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
576 pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
577 pccb->cmd[3]=((unsigned char) (start))&0xff;
578 pccb->cmd[4]=(unsigned char) blocks & 0xff;
581 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
582 debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
583 pccb->cmd[0],pccb->cmd[1],
584 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
588 void scsi_setup_inquiry(ccb * pccb)
590 pccb->cmd[0]=SCSI_INQUIRY;
591 pccb->cmd[1]=pccb->lun<<5;
594 if(pccb->datalen>255)
597 pccb->cmd[4]=(unsigned char)pccb->datalen;
600 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
607 "reset - reset SCSI controller\n"
608 "scsi info - show available SCSI devices\n"
609 "scsi scan - (re-)scan SCSI bus\n"
610 "scsi device [dev] - show or set current device\n"
611 "scsi part [dev] - print partition table of one or all SCSI devices\n"
612 "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
613 " to memory address `addr'"
617 scsiboot, 3, 1, do_scsiboot,
618 "boot from SCSI device",