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[u-boot] / common / cmd_scsi.c
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_SYM53C8XX
38 #define SCSI_VEND_ID    0x1000
39 #ifndef CONFIG_SCSI_DEV_ID
40 #define SCSI_DEV_ID             0x0001
41 #else
42 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
43 #endif
44 #elif defined CONFIG_SATA_ULI5288
45
46 #define SCSI_VEND_ID 0x10b9
47 #define SCSI_DEV_ID  0x5288
48
49 #else
50 #error no scsi device defined
51 #endif
52
53
54 static ccb tempccb;     /* temporary scsi command buffer */
55
56 static unsigned char tempbuff[512]; /* temporary data buffer */
57
58 static int scsi_max_devs; /* number of highest available scsi device */
59
60 static int scsi_curr_dev; /* current device */
61
62 static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
63
64 /********************************************************************************
65  *  forward declerations of some Setup Routines
66  */
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);
73
74
75 ulong scsi_read(int device, ulong blknr, ulong blkcnt, void *buffer);
76
77
78 /*********************************************************************************
79  * (re)-scan the scsi bus and reports scsi device info
80  * to the user if mode = 1
81  */
82 void scsi_scan(int mode)
83 {
84         unsigned char i,perq,modi,lun;
85         unsigned long capacity,blksz;
86         ccb* pccb=(ccb *)&tempccb;
87
88         if(mode==1) {
89                 printf("scanning bus for devices...\n");
90         }
91         for(i=0;i<CFG_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;
105         }
106         scsi_max_devs=0;
107         for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
108                 pccb->target=i;
109                 for(lun=0;lun<CFG_SCSI_MAX_LUN;lun++) {
110                         pccb->lun=lun;
111                         pccb->pdata=(unsigned char *)&tempbuff;
112                         pccb->datalen=512;
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 */
118                                 }
119                                 scsi_print_error(pccb);
120                                 continue;
121                         }
122                         perq=tempbuff[0];
123                         modi=tempbuff[1];
124                         if((perq & 0x1f)==0x1f) {
125                                 continue; /* skip unknown devices */
126                         }
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],
131                                        &tempbuff[8], 8);
132                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
133                                        &tempbuff[16], 16);
134                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
135                                        &tempbuff[32], 4);
136                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
137                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
138
139                         pccb->datalen=0;
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;
144                                         goto removable;
145                                 }
146                                 scsi_print_error(pccb);
147                                 continue;
148                         }
149                         pccb->datalen=8;
150                         scsi_setup_read_capacity(pccb);
151                         if(scsi_exec(pccb)!=TRUE) {
152                                 scsi_print_error(pccb);
153                                 continue;
154                         }
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]);
163 removable:
164                         if(mode==1) {
165                                 printf ("  Device %d: ", scsi_max_devs);
166                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
167                         } /* if mode */
168                         scsi_max_devs++;
169                 } /* next LUN */
170         }
171         if(scsi_max_devs>0)
172                 scsi_curr_dev=0;
173         else
174                 scsi_curr_dev=-1;
175 }
176
177
178 void scsi_init(void)
179 {
180         int busdevfunc;
181
182         busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
183         if(busdevfunc==-1) {
184                 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
185                 return;
186         }
187 #ifdef DEBUG
188         else {
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);
190         }
191 #endif
192         scsi_low_level_init(busdevfunc);
193         scsi_scan(1);
194 }
195
196 block_dev_desc_t * scsi_get_dev(int dev)
197 {
198         return (dev < CFG_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
199 }
200
201
202 /******************************************************************************
203  * scsi boot command intepreter. Derived from diskboot
204  */
205 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
206 {
207         char *boot_device = NULL;
208         char *ep;
209         int dev, part = 0;
210         ulong addr, cnt;
211         disk_partition_t info;
212         image_header_t *hdr;
213         int rcode = 0;
214
215         switch (argc) {
216         case 1:
217                 addr = CFG_LOAD_ADDR;
218                 boot_device = getenv ("bootdevice");
219                 break;
220         case 2:
221                 addr = simple_strtoul(argv[1], NULL, 16);
222                 boot_device = getenv ("bootdevice");
223                 break;
224         case 3:
225                 addr = simple_strtoul(argv[1], NULL, 16);
226                 boot_device = argv[2];
227                 break;
228         default:
229                 printf ("Usage:\n%s\n", cmdtp->usage);
230                 return 1;
231         }
232
233         if (!boot_device) {
234                 puts ("\n** No boot device **\n");
235                 return 1;
236         }
237
238         dev = simple_strtoul(boot_device, &ep, 16);
239         printf("booting from dev %d\n",dev);
240         if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
241                 printf ("\n** Device %d not available\n", dev);
242                 return 1;
243         }
244
245         if (*ep) {
246                 if (*ep != ':') {
247                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
248                         return 1;
249                 }
250                 part = simple_strtoul(++ep, NULL, 16);
251         }
252         if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
253                 printf("error reading partinfo\n");
254                 return 1;
255         }
256         if ((strncmp((char *)(info.type), BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
257             (strncmp((char *)(info.type), BOOT_PART_COMP, sizeof(info.type)) != 0)) {
258                 printf ("\n** Invalid partition type \"%.32s\""
259                         " (expect \"" BOOT_PART_TYPE "\")\n",
260                         info.type);
261                 return 1;
262         }
263
264         printf ("\nLoading from SCSI device %d, partition %d: "
265                 "Name: %.32s  Type: %.32s\n",
266                 dev, part, info.name, info.type);
267
268         debug ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
269                 info.start, info.size, info.blksz);
270
271         if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
272                 printf ("** Read error on %d:%d\n", dev, part);
273                 return 1;
274         }
275
276         hdr = (image_header_t *)addr;
277
278         if (!image_check_magic (hdr)) {
279                 printf("\n** Bad Magic Number **\n");
280                 return 1;
281         }
282
283         if (!image_check_hcrc (hdr)) {
284                 puts ("\n** Bad Header Checksum **\n");
285                 return 1;
286         }
287
288         image_print_contents (hdr);
289         cnt = image_get_image_size (hdr);
290         cnt += info.blksz - 1;
291         cnt /= info.blksz;
292         cnt -= 1;
293
294         if (scsi_read (dev, info.start+1, cnt,
295                       (ulong *)(addr+info.blksz)) != cnt) {
296                 printf ("** Read error on %d:%d\n", dev, part);
297                 return 1;
298         }
299         /* Loading ok, update default load address */
300         load_addr = addr;
301
302         flush_cache (addr, (cnt+1)*info.blksz);
303
304         /* Check if we should attempt an auto-start */
305         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
306                 char *local_args[2];
307                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
308                 local_args[0] = argv[0];
309                 local_args[1] = NULL;
310                 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
311                 rcode = do_bootm (cmdtp, 0, 1, local_args);
312         }
313          return rcode;
314 }
315
316 /*********************************************************************************
317  * scsi command intepreter
318  */
319 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
320 {
321         switch (argc) {
322     case 0:
323     case 1:     printf ("Usage:\n%s\n", cmdtp->usage);  return 1;
324     case 2:
325                         if (strncmp(argv[1],"res",3) == 0) {
326                                 printf("\nReset SCSI\n");
327                                 scsi_bus_reset();
328                                 scsi_scan(1);
329                                 return 0;
330                         }
331                         if (strncmp(argv[1],"inf",3) == 0) {
332                                 int i;
333                                 for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
334                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
335                                                 continue; /* list only known devices */
336                                         printf ("SCSI dev. %d:  ", i);
337                                         dev_print(&scsi_dev_desc[i]);
338                                 }
339                                 return 0;
340                         }
341                         if (strncmp(argv[1],"dev",3) == 0) {
342                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
343                                         printf("\nno SCSI devices available\n");
344                                         return 1;
345                                 }
346                                 printf ("\n    Device %d: ", scsi_curr_dev);
347                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
348                                 return 0;
349                         }
350                         if (strncmp(argv[1],"scan",4) == 0) {
351                                 scsi_scan(1);
352                                 return 0;
353                         }
354                         if (strncmp(argv[1],"part",4) == 0) {
355                                 int dev, ok;
356                                 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
357                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
358                                                 ok++;
359                                                 if (dev)
360                                                         printf("\n");
361                                                 debug ("print_part of %x\n",dev);
362                                                         print_part(&scsi_dev_desc[dev]);
363                                         }
364                                 }
365                                 if (!ok)
366                                         printf("\nno SCSI devices available\n");
367                                 return 1;
368                         }
369                         printf ("Usage:\n%s\n", cmdtp->usage);
370                         return 1;
371         case 3:
372                         if (strncmp(argv[1],"dev",3) == 0) {
373                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
374                                 printf ("\nSCSI device %d: ", dev);
375                                 if (dev >= CFG_SCSI_MAX_DEVICE) {
376                                         printf("unknown device\n");
377                                         return 1;
378                                 }
379                                 printf ("\n    Device %d: ", dev);
380                                 dev_print(&scsi_dev_desc[dev]);
381                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
382                                         return 1;
383                                 }
384                                 scsi_curr_dev = dev;
385                                 printf("... is now current device\n");
386                                 return 0;
387                         }
388                         if (strncmp(argv[1],"part",4) == 0) {
389                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
390                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
391                                         print_part(&scsi_dev_desc[dev]);
392                                 }
393                                 else {
394                                         printf ("\nSCSI device %d not available\n", dev);
395                                 }
396                                 return 1;
397                         }
398                         printf ("Usage:\n%s\n", cmdtp->usage);
399                         return 1;
400     default:
401                         /* at least 4 args */
402                         if (strcmp(argv[1],"read") == 0) {
403                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
404                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
405                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
406                                 ulong n;
407                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
408                                                 scsi_curr_dev, blk, cnt);
409                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
410                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
411                                 return 0;
412                         }
413         } /* switch */
414         printf ("Usage:\n%s\n", cmdtp->usage);
415         return 1;
416 }
417
418 /****************************************************************************************
419  * scsi_read
420  */
421
422 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
423
424 ulong scsi_read(int device, ulong blknr, ulong blkcnt, void *buffer)
425 {
426         ulong start,blks, buf_addr;
427         unsigned short smallblks;
428         ccb* pccb=(ccb *)&tempccb;
429         device&=0xff;
430         /* Setup  device
431          */
432         pccb->target=scsi_dev_desc[device].target;
433         pccb->lun=scsi_dev_desc[device].lun;
434         buf_addr=(unsigned long)buffer;
435         start=blknr;
436         blks=blkcnt;
437         debug ("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
438         do {
439                 pccb->pdata=(unsigned char *)buf_addr;
440                 if(blks>SCSI_MAX_READ_BLK) {
441                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
442                         smallblks=SCSI_MAX_READ_BLK;
443                         scsi_setup_read_ext(pccb,start,smallblks);
444                         start+=SCSI_MAX_READ_BLK;
445                         blks-=SCSI_MAX_READ_BLK;
446                 }
447                 else {
448                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
449                         smallblks=(unsigned short) blks;
450                         scsi_setup_read_ext(pccb,start,smallblks);
451                         start+=blks;
452                         blks=0;
453                 }
454                 debug ("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
455                 if(scsi_exec(pccb)!=TRUE) {
456                         scsi_print_error(pccb);
457                         blkcnt-=blks;
458                         break;
459                 }
460                 buf_addr+=pccb->datalen;
461         } while(blks!=0);
462         debug ("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
463         return(blkcnt);
464 }
465
466 /* copy src to dest, skipping leading and trailing blanks
467  * and null terminate the string
468  */
469 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
470 {
471         int start,end;
472
473         start=0;
474         while(start<len) {
475                 if(src[start]!=' ')
476                         break;
477                 start++;
478         }
479         end=len-1;
480         while(end>start) {
481                 if(src[end]!=' ')
482                         break;
483                 end--;
484         }
485         for( ; start<=end; start++) {
486                 *dest++=src[start];
487         }
488         *dest='\0';
489 }
490
491
492 /* Trim trailing blanks, and NUL-terminate string
493  */
494 void scsi_trim_trail (unsigned char *str, unsigned int len)
495 {
496         unsigned char *p = str + len - 1;
497
498         while (len-- > 0) {
499                 *p-- = '\0';
500                 if (*p != ' ') {
501                         return;
502                 }
503         }
504 }
505
506
507 /************************************************************************************
508  * Some setup (fill-in) routines
509  */
510 void scsi_setup_test_unit_ready(ccb * pccb)
511 {
512         pccb->cmd[0]=SCSI_TST_U_RDY;
513         pccb->cmd[1]=pccb->lun<<5;
514         pccb->cmd[2]=0;
515         pccb->cmd[3]=0;
516         pccb->cmd[4]=0;
517         pccb->cmd[5]=0;
518         pccb->cmdlen=6;
519         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
520 }
521
522 void scsi_setup_read_capacity(ccb * pccb)
523 {
524         pccb->cmd[0]=SCSI_RD_CAPAC;
525         pccb->cmd[1]=pccb->lun<<5;
526         pccb->cmd[2]=0;
527         pccb->cmd[3]=0;
528         pccb->cmd[4]=0;
529         pccb->cmd[5]=0;
530         pccb->cmd[6]=0;
531         pccb->cmd[7]=0;
532         pccb->cmd[8]=0;
533         pccb->cmd[9]=0;
534         pccb->cmdlen=10;
535         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
536
537 }
538
539 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
540 {
541         pccb->cmd[0]=SCSI_READ10;
542         pccb->cmd[1]=pccb->lun<<5;
543         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
544         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
545         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
546         pccb->cmd[5]=((unsigned char) (start))&0xff;
547         pccb->cmd[6]=0;
548         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
549         pccb->cmd[8]=(unsigned char) blocks & 0xff;
550         pccb->cmd[6]=0;
551         pccb->cmdlen=10;
552         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
553         debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
554                 pccb->cmd[0],pccb->cmd[1],
555                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
556                 pccb->cmd[7],pccb->cmd[8]);
557 }
558
559 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
560 {
561         pccb->cmd[0]=SCSI_READ6;
562         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
563         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
564         pccb->cmd[3]=((unsigned char) (start))&0xff;
565         pccb->cmd[4]=(unsigned char) blocks & 0xff;
566         pccb->cmd[5]=0;
567         pccb->cmdlen=6;
568         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
569         debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
570                 pccb->cmd[0],pccb->cmd[1],
571                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
572 }
573
574
575 void scsi_setup_inquiry(ccb * pccb)
576 {
577         pccb->cmd[0]=SCSI_INQUIRY;
578         pccb->cmd[1]=pccb->lun<<5;
579         pccb->cmd[2]=0;
580         pccb->cmd[3]=0;
581         if(pccb->datalen>255)
582                 pccb->cmd[4]=255;
583         else
584                 pccb->cmd[4]=(unsigned char)pccb->datalen;
585         pccb->cmd[5]=0;
586         pccb->cmdlen=6;
587         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
588 }
589
590
591 U_BOOT_CMD(
592         scsi, 5, 1, do_scsi,
593         "scsi    - SCSI sub-system\n",
594         "reset - reset SCSI controller\n"
595         "scsi info  - show available SCSI devices\n"
596         "scsi scan  - (re-)scan SCSI bus\n"
597         "scsi device [dev] - show or set current device\n"
598         "scsi part [dev] - print partition table of one or all SCSI devices\n"
599         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
600         "     to memory address `addr'\n"
601 );
602
603 U_BOOT_CMD(
604         scsiboot, 3, 1, do_scsiboot,
605         "scsiboot- boot from SCSI device\n",
606         "loadAddr dev:part\n"
607 );