1 /*-
2 * Copyright (c) 2000 Benno Rice <benno@jeamland.net>
3 * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
4 * Copyright (c) 2007-2008 Semihalf, Rafal Jaworowski <raj@semihalf.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30
31 #include <stand.h>
32
33 #include "api_public.h"
34 #include "bootstrap.h"
35 #include "glue.h"
36 #include "libuboot.h"
37
38 #ifndef nitems
39 #define nitems(x) (sizeof((x)) / sizeof((x)[0]))
40 #endif
41
42 #ifndef HEAP_SIZE
43 #define HEAP_SIZE (2 * 1024 * 1024)
44 #endif
45
46 struct uboot_devdesc currdev;
47 struct arch_switch archsw; /* MI/MD interface boundary */
48 int devs_no;
49
50 uintptr_t uboot_heap_start;
51 uintptr_t uboot_heap_end;
52
53 struct device_type {
54 const char *name;
55 int type;
56 } device_types[] = {
57 { "disk", DEV_TYP_STOR },
58 { "ide", DEV_TYP_STOR | DT_STOR_IDE },
59 { "mmc", DEV_TYP_STOR | DT_STOR_MMC },
60 { "sata", DEV_TYP_STOR | DT_STOR_SATA },
61 { "scsi", DEV_TYP_STOR | DT_STOR_SCSI },
62 { "usb", DEV_TYP_STOR | DT_STOR_USB },
63 { "net", DEV_TYP_NET }
64 };
65
66 extern char end[];
67
68 extern unsigned char _etext[];
69 extern unsigned char _edata[];
70 extern unsigned char __bss_start[];
71 extern unsigned char __sbss_start[];
72 extern unsigned char __sbss_end[];
73 extern unsigned char _end[];
74
75 #ifdef LOADER_FDT_SUPPORT
76 extern int command_fdt_internal(int argc, char *argv[]);
77 #endif
78
79 static void
dump_sig(struct api_signature * sig)80 dump_sig(struct api_signature *sig)
81 {
82 #ifdef DEBUG
83 printf("signature:\n");
84 printf(" version\t= %d\n", sig->version);
85 printf(" checksum\t= 0x%08x\n", sig->checksum);
86 printf(" sc entry\t= 0x%08x\n", sig->syscall);
87 #endif
88 }
89
90 static void
dump_addr_info(void)91 dump_addr_info(void)
92 {
93 #ifdef DEBUG
94 printf("\naddresses info:\n");
95 printf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
96 printf(" _edata = 0x%08x\n", (uint32_t)_edata);
97 printf(" __sbss_start = 0x%08x\n", (uint32_t)__sbss_start);
98 printf(" __sbss_end = 0x%08x\n", (uint32_t)__sbss_end);
99 printf(" __sbss_start = 0x%08x\n", (uint32_t)__bss_start);
100 printf(" _end = 0x%08x\n", (uint32_t)_end);
101 printf(" syscall entry = 0x%08x\n", (uint32_t)syscall_ptr);
102 #endif
103 }
104
105 static uint64_t
memsize(struct sys_info * si,int flags)106 memsize(struct sys_info *si, int flags)
107 {
108 uint64_t size;
109 int i;
110
111 size = 0;
112 for (i = 0; i < si->mr_no; i++)
113 if (si->mr[i].flags == flags && si->mr[i].size)
114 size += (si->mr[i].size);
115
116 return (size);
117 }
118
119 static void
meminfo(void)120 meminfo(void)
121 {
122 uint64_t size;
123 struct sys_info *si;
124 int t[3] = { MR_ATTR_DRAM, MR_ATTR_FLASH, MR_ATTR_SRAM };
125 int i;
126
127 if ((si = ub_get_sys_info()) == NULL)
128 panic("could not retrieve system info");
129
130 for (i = 0; i < 3; i++) {
131 size = memsize(si, t[i]);
132 if (size > 0)
133 printf("%s: %juMB\n", ub_mem_type(t[i]),
134 (uintmax_t)(size / 1024 / 1024));
135 }
136 }
137
138 static const char *
get_device_type(const char * devstr,int * devtype)139 get_device_type(const char *devstr, int *devtype)
140 {
141 int i;
142 int namelen;
143 struct device_type *dt;
144
145 if (devstr) {
146 for (i = 0; i < nitems(device_types); i++) {
147 dt = &device_types[i];
148 namelen = strlen(dt->name);
149 if (strncmp(dt->name, devstr, namelen) == 0) {
150 *devtype = dt->type;
151 return (devstr + namelen);
152 }
153 }
154 printf("Unknown device type '%s'\n", devstr);
155 }
156
157 *devtype = DEV_TYP_NONE;
158 return (NULL);
159 }
160
161 static const char *
device_typename(int type)162 device_typename(int type)
163 {
164 int i;
165
166 for (i = 0; i < nitems(device_types); i++)
167 if (device_types[i].type == type)
168 return (device_types[i].name);
169
170 return ("<unknown>");
171 }
172
173 /*
174 * Parse a device string into type, unit, slice and partition numbers. A
175 * returned value of -1 for type indicates a search should be done for the
176 * first loadable device, otherwise a returned value of -1 for unit
177 * indicates a search should be done for the first loadable device of the
178 * given type.
179 *
180 * The returned values for slice and partition are interpreted by
181 * disk_open().
182 *
183 * The device string can be a standard loader(8) disk specifier:
184 *
185 * disk<unit>s<slice> disk0s1
186 * disk<unit>s<slice><partition> disk1s2a
187 * disk<unit>p<partition> disk0p4
188 *
189 * or one of the following formats:
190 *
191 * Valid device strings: For device types:
192 *
193 * <type_name> DEV_TYP_STOR, DEV_TYP_NET
194 * <type_name><unit> DEV_TYP_STOR, DEV_TYP_NET
195 * <type_name><unit>: DEV_TYP_STOR, DEV_TYP_NET
196 * <type_name><unit>:<slice> DEV_TYP_STOR
197 * <type_name><unit>:<slice>. DEV_TYP_STOR
198 * <type_name><unit>:<slice>.<partition> DEV_TYP_STOR
199 *
200 * For valid type names, see the device_types array, above.
201 *
202 * Slice numbers are 1-based. 0 is a wildcard.
203 */
204 static void
get_load_device(int * type,int * unit,int * slice,int * partition)205 get_load_device(int *type, int *unit, int *slice, int *partition)
206 {
207 struct disk_devdesc *dev;
208 char *devstr;
209 const char *p;
210 char *endp;
211
212 *type = DEV_TYP_NONE;
213 *unit = -1;
214 *slice = D_SLICEWILD;
215 *partition = D_PARTWILD;
216
217 devstr = ub_env_get("loaderdev");
218 if (devstr == NULL) {
219 printf("U-Boot env: loaderdev not set, will probe all devices.\n");
220 return;
221 }
222 printf("U-Boot env: loaderdev='%s'\n", devstr);
223
224 p = get_device_type(devstr, type);
225
226 /*
227 * If type is DEV_TYP_STOR we have a disk-like device. If the remainder
228 * of the string contains spaces, dots, or a colon in any location other
229 * than the last char, it's legacy format. Otherwise it might be
230 * standard loader(8) format (e.g., disk0s2a or mmc1p12), so try to
231 * parse the remainder of the string as such, and if it works, return
232 * those results. Otherwise we'll fall through to the code that parses
233 * the legacy format.
234 *
235 * disk_parsedev now assumes that it points to the start of the device
236 * name, but since it doesn't know about uboot's usage, just subtract 4
237 * since it always adds 4. This is the least-bad solution since it makes
238 * all the other loader code easier (might be better to create a fake
239 * 'disk...' string, but that's more work than uboot is worth).
240 */
241 if (*type & DEV_TYP_STOR) {
242 size_t len = strlen(p);
243 if (strcspn(p, " .") == len && strcspn(p, ":") >= len - 1 &&
244 disk_parsedev((struct devdesc **)&dev, p - 4, NULL) == 0) { /* Hack */
245 *unit = dev->dd.d_unit;
246 *slice = dev->d_slice;
247 *partition = dev->d_partition;
248 free(dev);
249 return;
250 }
251 }
252
253 /* Ignore optional spaces after the device name. */
254 while (*p == ' ')
255 p++;
256
257 /* Unknown device name, or a known name without unit number. */
258 if ((*type == DEV_TYP_NONE) || (*p == '\0')) {
259 return;
260 }
261
262 /* Malformed unit number. */
263 if (!isdigit(*p)) {
264 *type = DEV_TYP_NONE;
265 return;
266 }
267
268 /* Guaranteed to extract a number from the string, as *p is a digit. */
269 *unit = strtol(p, &endp, 10);
270 p = endp;
271
272 /* Known device name with unit number and nothing else. */
273 if (*p == '\0') {
274 return;
275 }
276
277 /* Device string is malformed beyond unit number. */
278 if (*p != ':') {
279 *type = DEV_TYP_NONE;
280 *unit = -1;
281 return;
282 }
283
284 p++;
285
286 /* No slice and partition specification. */
287 if ('\0' == *p )
288 return;
289
290 /* Only DEV_TYP_STOR devices can have a slice specification. */
291 if (!(*type & DEV_TYP_STOR)) {
292 *type = DEV_TYP_NONE;
293 *unit = -1;
294 return;
295 }
296
297 *slice = strtoul(p, &endp, 10);
298
299 /* Malformed slice number. */
300 if (p == endp) {
301 *type = DEV_TYP_NONE;
302 *unit = -1;
303 *slice = D_SLICEWILD;
304 return;
305 }
306
307 p = endp;
308
309 /* No partition specification. */
310 if (*p == '\0')
311 return;
312
313 /* Device string is malformed beyond slice number. */
314 if (*p != '.') {
315 *type = DEV_TYP_NONE;
316 *unit = -1;
317 *slice = D_SLICEWILD;
318 return;
319 }
320
321 p++;
322
323 /* No partition specification. */
324 if (*p == '\0')
325 return;
326
327 *partition = strtol(p, &endp, 10);
328 p = endp;
329
330 /* Full, valid device string. */
331 if (*endp == '\0')
332 return;
333
334 /* Junk beyond partition number. */
335 *type = DEV_TYP_NONE;
336 *unit = -1;
337 *slice = D_SLICEWILD;
338 *partition = D_PARTWILD;
339 }
340
341 static void
print_disk_probe_info(void)342 print_disk_probe_info(void)
343 {
344 char slice[32];
345 char partition[32];
346
347 if (currdev.d_disk.d_slice == D_SLICENONE)
348 strlcpy(slice, "<none>", sizeof(slice));
349 else if (currdev.d_disk.d_slice == D_SLICEWILD)
350 strlcpy(slice, "<auto>", sizeof(slice));
351 else
352 snprintf(slice, sizeof(slice), "%d", currdev.d_disk.d_slice);
353
354 if (currdev.d_disk.d_partition == D_PARTNONE)
355 strlcpy(partition, "<none>", sizeof(partition));
356 else if (currdev.d_disk.d_partition == D_PARTWILD)
357 strlcpy(partition, "<auto>", sizeof(partition));
358 else
359 snprintf(partition, sizeof(partition), "%d",
360 currdev.d_disk.d_partition);
361
362 printf(" Checking unit=%d slice=%s partition=%s...",
363 currdev.dd.d_unit, slice, partition);
364
365 }
366
367 static int
probe_disks(int devidx,int load_type,int load_unit,int load_slice,int load_partition)368 probe_disks(int devidx, int load_type, int load_unit, int load_slice,
369 int load_partition)
370 {
371 int open_result, unit;
372 struct open_file f;
373
374 currdev.d_disk.d_slice = load_slice;
375 currdev.d_disk.d_partition = load_partition;
376
377 f.f_devdata = &currdev;
378 open_result = -1;
379
380 if (load_type == -1) {
381 printf(" Probing all disk devices...\n");
382 /* Try each disk in succession until one works. */
383 for (currdev.dd.d_unit = 0; currdev.dd.d_unit < UB_MAX_DEV;
384 currdev.dd.d_unit++) {
385 print_disk_probe_info();
386 open_result = devsw[devidx]->dv_open(&f, &currdev);
387 if (open_result == 0) {
388 printf(" good.\n");
389 return (0);
390 }
391 printf("\n");
392 }
393 return (-1);
394 }
395
396 if (load_unit == -1) {
397 printf(" Probing all %s devices...\n", device_typename(load_type));
398 /* Try each disk of given type in succession until one works. */
399 for (unit = 0; unit < UB_MAX_DEV; unit++) {
400 currdev.dd.d_unit = uboot_diskgetunit(load_type, unit);
401 if (currdev.dd.d_unit == -1)
402 break;
403 print_disk_probe_info();
404 open_result = devsw[devidx]->dv_open(&f, &currdev);
405 if (open_result == 0) {
406 printf(" good.\n");
407 return (0);
408 }
409 printf("\n");
410 }
411 return (-1);
412 }
413
414 if ((currdev.dd.d_unit = uboot_diskgetunit(load_type, load_unit)) != -1) {
415 print_disk_probe_info();
416 open_result = devsw[devidx]->dv_open(&f,&currdev);
417 if (open_result == 0) {
418 printf(" good.\n");
419 return (0);
420 }
421 printf("\n");
422 }
423
424 printf(" Requested disk type/unit/slice/partition not found\n");
425 return (-1);
426 }
427
428 int
main(int argc,char ** argv)429 main(int argc, char **argv)
430 {
431 struct api_signature *sig = NULL;
432 int load_type, load_unit, load_slice, load_partition;
433 int i;
434 const char *ldev;
435
436 /*
437 * We first check if a command line argument was passed to us containing
438 * API's signature address. If it wasn't then we try to search for the
439 * API signature via the usual hinted address.
440 * If we can't find the magic signature and related info, exit with a
441 * unique error code that U-Boot reports as "## Application terminated,
442 * rc = 0xnnbadab1". Hopefully 'badab1' looks enough like "bad api" to
443 * provide a clue. It's better than 0xffffffff anyway.
444 */
445 if (!api_parse_cmdline_sig(argc, argv, &sig) && !api_search_sig(&sig))
446 return (0x01badab1);
447
448 syscall_ptr = sig->syscall;
449 if (syscall_ptr == NULL)
450 return (0x02badab1);
451
452 if (sig->version > API_SIG_VERSION)
453 return (0x03badab1);
454
455 /* Clear BSS sections */
456 bzero(__sbss_start, __sbss_end - __sbss_start);
457 bzero(__bss_start, _end - __bss_start);
458
459 /*
460 * Initialise the heap as early as possible. Once this is done,
461 * alloc() is usable. We are using the stack u-boot set up near the top
462 * of physical ram; hopefully there is sufficient space between the end
463 * of our bss and the bottom of the u-boot stack to avoid overlap.
464 */
465 uboot_heap_start = round_page((uintptr_t)end);
466 uboot_heap_end = uboot_heap_start + HEAP_SIZE;
467 setheap((void *)uboot_heap_start, (void *)uboot_heap_end);
468
469 /*
470 * Set up console.
471 */
472 cons_probe();
473 printf("Compatible U-Boot API signature found @%p\n", sig);
474
475 printf("\n%s", bootprog_info);
476 printf("\n");
477
478 dump_sig(sig);
479 dump_addr_info();
480
481 meminfo();
482
483 archsw.arch_loadaddr = uboot_loadaddr;
484 archsw.arch_getdev = uboot_getdev;
485 archsw.arch_copyin = uboot_copyin;
486 archsw.arch_copyout = uboot_copyout;
487 archsw.arch_readin = uboot_readin;
488 archsw.arch_autoload = uboot_autoload;
489
490 /* Set up currdev variable to have hooks in place. */
491 env_setenv("currdev", EV_VOLATILE, "", uboot_setcurrdev, env_nounset);
492
493 /*
494 * Enumerate U-Boot devices
495 */
496 if ((devs_no = ub_dev_enum()) == 0) {
497 printf("no U-Boot devices found");
498 goto do_interact;
499 }
500 printf("Number of U-Boot devices: %d\n", devs_no);
501
502 get_load_device(&load_type, &load_unit, &load_slice, &load_partition);
503
504 /*
505 * March through the device switch probing for things.
506 */
507 for (i = 0; devsw[i] != NULL; i++) {
508
509 if (devsw[i]->dv_init == NULL)
510 continue;
511 if ((devsw[i]->dv_init)() != 0)
512 continue;
513
514 printf("Found U-Boot device: %s\n", devsw[i]->dv_name);
515
516 currdev.dd.d_dev = devsw[i];
517 currdev.dd.d_unit = 0;
518
519 if ((load_type == DEV_TYP_NONE || (load_type & DEV_TYP_STOR)) &&
520 strcmp(devsw[i]->dv_name, "disk") == 0) {
521 if (probe_disks(i, load_type, load_unit, load_slice,
522 load_partition) == 0)
523 break;
524 }
525
526 if ((load_type == DEV_TYP_NONE || (load_type & DEV_TYP_NET)) &&
527 strcmp(devsw[i]->dv_name, "net") == 0)
528 break;
529 }
530
531 /*
532 * If we couldn't find a boot device, return an error to u-boot.
533 * U-boot may be running a boot script that can try something different
534 * so returning an error is better than forcing a reboot.
535 */
536 if (devsw[i] == NULL) {
537 printf("No boot device found!\n");
538 return (0xbadef1ce);
539 }
540
541 ldev = devformat(&currdev.dd);
542 env_setenv("currdev", EV_VOLATILE, ldev, uboot_setcurrdev, env_nounset);
543 env_setenv("loaddev", EV_VOLATILE, ldev, env_noset, env_nounset);
544 printf("Booting from %s\n", ldev);
545
546 do_interact:
547 setenv("LINES", "24", 1); /* optional */
548 setenv("prompt", "loader>", 1);
549 #ifdef __powerpc__
550 setenv("usefdt", "1", 1);
551 #endif
552
553 interact(); /* doesn't return */
554
555 return (0);
556 }
557
558
559 COMMAND_SET(heap, "heap", "show heap usage", command_heap);
560 static int
command_heap(int argc,char * argv[])561 command_heap(int argc, char *argv[])
562 {
563
564 printf("heap base at %p, top at %p, used %td\n", end, sbrk(0),
565 sbrk(0) - end);
566
567 return (CMD_OK);
568 }
569
570 COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
571 static int
command_reboot(int argc,char * argv[])572 command_reboot(int argc, char *argv[])
573 {
574
575 printf("Resetting...\n");
576 ub_reset();
577
578 printf("Reset failed!\n");
579 while (1);
580 __unreachable();
581 }
582
583 COMMAND_SET(devinfo, "devinfo", "show U-Boot devices", command_devinfo);
584 static int
command_devinfo(int argc,char * argv[])585 command_devinfo(int argc, char *argv[])
586 {
587 int i;
588
589 if ((devs_no = ub_dev_enum()) == 0) {
590 command_errmsg = "no U-Boot devices found!?";
591 return (CMD_ERROR);
592 }
593
594 printf("U-Boot devices:\n");
595 for (i = 0; i < devs_no; i++) {
596 ub_dump_di(i);
597 printf("\n");
598 }
599 return (CMD_OK);
600 }
601
602 COMMAND_SET(sysinfo, "sysinfo", "show U-Boot system info", command_sysinfo);
603 static int
command_sysinfo(int argc,char * argv[])604 command_sysinfo(int argc, char *argv[])
605 {
606 struct sys_info *si;
607
608 if ((si = ub_get_sys_info()) == NULL) {
609 command_errmsg = "could not retrieve U-Boot sys info!?";
610 return (CMD_ERROR);
611 }
612
613 printf("U-Boot system info:\n");
614 ub_dump_si(si);
615 return (CMD_OK);
616 }
617
618 enum ubenv_action {
619 UBENV_UNKNOWN,
620 UBENV_SHOW,
621 UBENV_IMPORT
622 };
623
624 static void
handle_uboot_env_var(enum ubenv_action action,const char * var)625 handle_uboot_env_var(enum ubenv_action action, const char * var)
626 {
627 char ldvar[128];
628 const char *val;
629 char *wrk;
630 int len;
631
632 /*
633 * On an import with the variable name formatted as ldname=ubname,
634 * import the uboot variable ubname into the loader variable ldname,
635 * otherwise the historical behavior is to import to uboot.ubname.
636 */
637 if (action == UBENV_IMPORT) {
638 len = strcspn(var, "=");
639 if (len == 0) {
640 printf("name cannot start with '=': '%s'\n", var);
641 return;
642 }
643 if (var[len] == 0) {
644 strcpy(ldvar, "uboot.");
645 strncat(ldvar, var, sizeof(ldvar) - 7);
646 } else {
647 len = MIN(len, sizeof(ldvar) - 1);
648 strncpy(ldvar, var, len);
649 ldvar[len] = 0;
650 var = &var[len + 1];
651 }
652 }
653
654 /*
655 * If the user prepended "uboot." (which is how they usually see these
656 * names) strip it off as a convenience.
657 */
658 if (strncmp(var, "uboot.", 6) == 0) {
659 var = &var[6];
660 }
661
662 /* If there is no variable name left, punt. */
663 if (var[0] == 0) {
664 printf("empty variable name\n");
665 return;
666 }
667
668 val = ub_env_get(var);
669 if (action == UBENV_SHOW) {
670 if (val == NULL)
671 printf("uboot.%s is not set\n", var);
672 else
673 printf("uboot.%s=%s\n", var, val);
674 } else if (action == UBENV_IMPORT) {
675 if (val != NULL) {
676 setenv(ldvar, val, 1);
677 }
678 }
679 }
680
681 static int
command_ubenv(int argc,char * argv[])682 command_ubenv(int argc, char *argv[])
683 {
684 enum ubenv_action action;
685 const char *var;
686 int i;
687
688 action = UBENV_UNKNOWN;
689 if (argc > 1) {
690 if (strcasecmp(argv[1], "import") == 0)
691 action = UBENV_IMPORT;
692 else if (strcasecmp(argv[1], "show") == 0)
693 action = UBENV_SHOW;
694 }
695 if (action == UBENV_UNKNOWN) {
696 command_errmsg = "usage: 'ubenv <import|show> [var ...]";
697 return (CMD_ERROR);
698 }
699
700 if (argc > 2) {
701 for (i = 2; i < argc; i++)
702 handle_uboot_env_var(action, argv[i]);
703 } else {
704 var = NULL;
705 for (;;) {
706 if ((var = ub_env_enum(var)) == NULL)
707 break;
708 handle_uboot_env_var(action, var);
709 }
710 }
711
712 return (CMD_OK);
713 }
714 COMMAND_SET(ubenv, "ubenv", "show or import U-Boot env vars", command_ubenv);
715
716 #ifdef LOADER_FDT_SUPPORT
717 /*
718 * Since proper fdt command handling function is defined in fdt_loader_cmd.c,
719 * and declaring it as extern is in contradiction with COMMAND_SET() macro
720 * (which uses static pointer), we're defining wrapper function, which
721 * calls the proper fdt handling routine.
722 */
723 static int
command_fdt(int argc,char * argv[])724 command_fdt(int argc, char *argv[])
725 {
726
727 return (command_fdt_internal(argc, argv));
728 }
729
730 COMMAND_SET(fdt, "fdt", "flattened device tree handling", command_fdt);
731 #endif
732