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