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1 /*
2 * Copyright 2010-2011 Calxeda, Inc.
3 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <command.h>
10 #include <malloc.h>
11 #include <mapmem.h>
12 #include <linux/string.h>
13 #include <linux/ctype.h>
14 #include <errno.h>
15 #include <linux/list.h>
16 #include <fs.h>
17 #include <asm/io.h>
18
19 #include "menu.h"
20 #include "cli.h"
21
22 #define MAX_TFTP_PATH_LEN 127
23
24 const char *pxe_default_paths[] = {
25 #ifdef CONFIG_SYS_SOC
26 "default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC,
27 #endif
28 "default-" CONFIG_SYS_ARCH,
29 "default",
30 NULL
31 };
32
33 static bool is_pxe;
34
35 /*
36 * Like getenv, but prints an error if envvar isn't defined in the
37 * environment. It always returns what getenv does, so it can be used in
38 * place of getenv without changing error handling otherwise.
39 */
40 static char *from_env(const char *envvar)
41 {
42 char *ret;
43
44 ret = getenv(envvar);
45
46 if (!ret)
47 printf("missing environment variable: %s\n", envvar);
48
49 return ret;
50 }
51
52 #ifdef CONFIG_CMD_NET
53 /*
54 * Convert an ethaddr from the environment to the format used by pxelinux
55 * filenames based on mac addresses. Convert's ':' to '-', and adds "01-" to
56 * the beginning of the ethernet address to indicate a hardware type of
57 * Ethernet. Also converts uppercase hex characters into lowercase, to match
58 * pxelinux's behavior.
59 *
60 * Returns 1 for success, -ENOENT if 'ethaddr' is undefined in the
61 * environment, or some other value < 0 on error.
62 */
63 static int format_mac_pxe(char *outbuf, size_t outbuf_len)
64 {
65 uchar ethaddr[6];
66
67 if (outbuf_len < 21) {
68 printf("outbuf is too small (%zd < 21)\n", outbuf_len);
69
70 return -EINVAL;
71 }
72
73 if (!eth_getenv_enetaddr_by_index("eth", eth_get_dev_index(),
74 ethaddr))
75 return -ENOENT;
76
77 sprintf(outbuf, "01-%02x-%02x-%02x-%02x-%02x-%02x",
78 ethaddr[0], ethaddr[1], ethaddr[2],
79 ethaddr[3], ethaddr[4], ethaddr[5]);
80
81 return 1;
82 }
83 #endif
84
85 /*
86 * Returns the directory the file specified in the bootfile env variable is
87 * in. If bootfile isn't defined in the environment, return NULL, which should
88 * be interpreted as "don't prepend anything to paths".
89 */
90 static int get_bootfile_path(const char *file_path, char *bootfile_path,
91 size_t bootfile_path_size)
92 {
93 char *bootfile, *last_slash;
94 size_t path_len = 0;
95
96 /* Only syslinux allows absolute paths */
97 if (file_path[0] == '/' && !is_pxe)
98 goto ret;
99
100 bootfile = from_env("bootfile");
101
102 if (!bootfile)
103 goto ret;
104
105 last_slash = strrchr(bootfile, '/');
106
107 if (last_slash == NULL)
108 goto ret;
109
110 path_len = (last_slash - bootfile) + 1;
111
112 if (bootfile_path_size < path_len) {
113 printf("bootfile_path too small. (%zd < %zd)\n",
114 bootfile_path_size, path_len);
115
116 return -1;
117 }
118
119 strncpy(bootfile_path, bootfile, path_len);
120
121 ret:
122 bootfile_path[path_len] = '\0';
123
124 return 1;
125 }
126
127 static int (*do_getfile)(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr);
128
129 #ifdef CONFIG_CMD_NET
130 static int do_get_tftp(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
131 {
132 char *tftp_argv[] = {"tftp", NULL, NULL, NULL};
133
134 tftp_argv[1] = file_addr;
135 tftp_argv[2] = (void *)file_path;
136
137 if (do_tftpb(cmdtp, 0, 3, tftp_argv))
138 return -ENOENT;
139
140 return 1;
141 }
142 #endif
143
144 static char *fs_argv[5];
145
146 static int do_get_ext2(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
147 {
148 #ifdef CONFIG_CMD_EXT2
149 fs_argv[0] = "ext2load";
150 fs_argv[3] = file_addr;
151 fs_argv[4] = (void *)file_path;
152
153 if (!do_ext2load(cmdtp, 0, 5, fs_argv))
154 return 1;
155 #endif
156 return -ENOENT;
157 }
158
159 static int do_get_fat(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
160 {
161 #ifdef CONFIG_CMD_FAT
162 fs_argv[0] = "fatload";
163 fs_argv[3] = file_addr;
164 fs_argv[4] = (void *)file_path;
165
166 if (!do_fat_fsload(cmdtp, 0, 5, fs_argv))
167 return 1;
168 #endif
169 return -ENOENT;
170 }
171
172 static int do_get_any(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
173 {
174 #ifdef CONFIG_CMD_FS_GENERIC
175 fs_argv[0] = "load";
176 fs_argv[3] = file_addr;
177 fs_argv[4] = (void *)file_path;
178
179 if (!do_load(cmdtp, 0, 5, fs_argv, FS_TYPE_ANY))
180 return 1;
181 #endif
182 return -ENOENT;
183 }
184
185 /*
186 * As in pxelinux, paths to files referenced from files we retrieve are
187 * relative to the location of bootfile. get_relfile takes such a path and
188 * joins it with the bootfile path to get the full path to the target file. If
189 * the bootfile path is NULL, we use file_path as is.
190 *
191 * Returns 1 for success, or < 0 on error.
192 */
193 static int get_relfile(cmd_tbl_t *cmdtp, const char *file_path,
194 unsigned long file_addr)
195 {
196 size_t path_len;
197 char relfile[MAX_TFTP_PATH_LEN+1];
198 char addr_buf[18];
199 int err;
200
201 err = get_bootfile_path(file_path, relfile, sizeof(relfile));
202
203 if (err < 0)
204 return err;
205
206 path_len = strlen(file_path);
207 path_len += strlen(relfile);
208
209 if (path_len > MAX_TFTP_PATH_LEN) {
210 printf("Base path too long (%s%s)\n",
211 relfile,
212 file_path);
213
214 return -ENAMETOOLONG;
215 }
216
217 strcat(relfile, file_path);
218
219 printf("Retrieving file: %s\n", relfile);
220
221 sprintf(addr_buf, "%lx", file_addr);
222
223 return do_getfile(cmdtp, relfile, addr_buf);
224 }
225
226 /*
227 * Retrieve the file at 'file_path' to the locate given by 'file_addr'. If
228 * 'bootfile' was specified in the environment, the path to bootfile will be
229 * prepended to 'file_path' and the resulting path will be used.
230 *
231 * Returns 1 on success, or < 0 for error.
232 */
233 static int get_pxe_file(cmd_tbl_t *cmdtp, const char *file_path,
234 unsigned long file_addr)
235 {
236 unsigned long config_file_size;
237 char *tftp_filesize;
238 int err;
239 char *buf;
240
241 err = get_relfile(cmdtp, file_path, file_addr);
242
243 if (err < 0)
244 return err;
245
246 /*
247 * the file comes without a NUL byte at the end, so find out its size
248 * and add the NUL byte.
249 */
250 tftp_filesize = from_env("filesize");
251
252 if (!tftp_filesize)
253 return -ENOENT;
254
255 if (strict_strtoul(tftp_filesize, 16, &config_file_size) < 0)
256 return -EINVAL;
257
258 buf = map_sysmem(file_addr + config_file_size, 1);
259 *buf = '\0';
260 unmap_sysmem(buf);
261
262 return 1;
263 }
264
265 #ifdef CONFIG_CMD_NET
266
267 #define PXELINUX_DIR "pxelinux.cfg/"
268
269 /*
270 * Retrieves a file in the 'pxelinux.cfg' folder. Since this uses get_pxe_file
271 * to do the hard work, the location of the 'pxelinux.cfg' folder is generated
272 * from the bootfile path, as described above.
273 *
274 * Returns 1 on success or < 0 on error.
275 */
276 static int get_pxelinux_path(cmd_tbl_t *cmdtp, const char *file,
277 unsigned long pxefile_addr_r)
278 {
279 size_t base_len = strlen(PXELINUX_DIR);
280 char path[MAX_TFTP_PATH_LEN+1];
281
282 if (base_len + strlen(file) > MAX_TFTP_PATH_LEN) {
283 printf("path (%s%s) too long, skipping\n",
284 PXELINUX_DIR, file);
285 return -ENAMETOOLONG;
286 }
287
288 sprintf(path, PXELINUX_DIR "%s", file);
289
290 return get_pxe_file(cmdtp, path, pxefile_addr_r);
291 }
292
293 /*
294 * Looks for a pxe file with a name based on the pxeuuid environment variable.
295 *
296 * Returns 1 on success or < 0 on error.
297 */
298 static int pxe_uuid_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
299 {
300 char *uuid_str;
301
302 uuid_str = from_env("pxeuuid");
303
304 if (!uuid_str)
305 return -ENOENT;
306
307 return get_pxelinux_path(cmdtp, uuid_str, pxefile_addr_r);
308 }
309
310 /*
311 * Looks for a pxe file with a name based on the 'ethaddr' environment
312 * variable.
313 *
314 * Returns 1 on success or < 0 on error.
315 */
316 static int pxe_mac_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
317 {
318 char mac_str[21];
319 int err;
320
321 err = format_mac_pxe(mac_str, sizeof(mac_str));
322
323 if (err < 0)
324 return err;
325
326 return get_pxelinux_path(cmdtp, mac_str, pxefile_addr_r);
327 }
328
329 /*
330 * Looks for pxe files with names based on our IP address. See pxelinux
331 * documentation for details on what these file names look like. We match
332 * that exactly.
333 *
334 * Returns 1 on success or < 0 on error.
335 */
336 static int pxe_ipaddr_paths(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
337 {
338 char ip_addr[9];
339 int mask_pos, err;
340
341 sprintf(ip_addr, "%08X", ntohl(net_ip.s_addr));
342
343 for (mask_pos = 7; mask_pos >= 0; mask_pos--) {
344 err = get_pxelinux_path(cmdtp, ip_addr, pxefile_addr_r);
345
346 if (err > 0)
347 return err;
348
349 ip_addr[mask_pos] = '\0';
350 }
351
352 return -ENOENT;
353 }
354
355 /*
356 * Entry point for the 'pxe get' command.
357 * This Follows pxelinux's rules to download a config file from a tftp server.
358 * The file is stored at the location given by the pxefile_addr_r environment
359 * variable, which must be set.
360 *
361 * UUID comes from pxeuuid env variable, if defined
362 * MAC addr comes from ethaddr env variable, if defined
363 * IP
364 *
365 * see http://syslinux.zytor.com/wiki/index.php/PXELINUX
366 *
367 * Returns 0 on success or 1 on error.
368 */
369 static int
370 do_pxe_get(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
371 {
372 char *pxefile_addr_str;
373 unsigned long pxefile_addr_r;
374 int err, i = 0;
375
376 do_getfile = do_get_tftp;
377
378 if (argc != 1)
379 return CMD_RET_USAGE;
380
381 pxefile_addr_str = from_env("pxefile_addr_r");
382
383 if (!pxefile_addr_str)
384 return 1;
385
386 err = strict_strtoul(pxefile_addr_str, 16,
387 (unsigned long *)&pxefile_addr_r);
388 if (err < 0)
389 return 1;
390
391 /*
392 * Keep trying paths until we successfully get a file we're looking
393 * for.
394 */
395 if (pxe_uuid_path(cmdtp, pxefile_addr_r) > 0 ||
396 pxe_mac_path(cmdtp, pxefile_addr_r) > 0 ||
397 pxe_ipaddr_paths(cmdtp, pxefile_addr_r) > 0) {
398 printf("Config file found\n");
399
400 return 0;
401 }
402
403 while (pxe_default_paths[i]) {
404 if (get_pxelinux_path(cmdtp, pxe_default_paths[i],
405 pxefile_addr_r) > 0) {
406 printf("Config file found\n");
407 return 0;
408 }
409 i++;
410 }
411
412 printf("Config file not found\n");
413
414 return 1;
415 }
416 #endif
417
418 /*
419 * Wrapper to make it easier to store the file at file_path in the location
420 * specified by envaddr_name. file_path will be joined to the bootfile path,
421 * if any is specified.
422 *
423 * Returns 1 on success or < 0 on error.
424 */
425 static int get_relfile_envaddr(cmd_tbl_t *cmdtp, const char *file_path, const char *envaddr_name)
426 {
427 unsigned long file_addr;
428 char *envaddr;
429
430 envaddr = from_env(envaddr_name);
431
432 if (!envaddr)
433 return -ENOENT;
434
435 if (strict_strtoul(envaddr, 16, &file_addr) < 0)
436 return -EINVAL;
437
438 return get_relfile(cmdtp, file_path, file_addr);
439 }
440
441 /*
442 * A note on the pxe file parser.
443 *
444 * We're parsing files that use syslinux grammar, which has a few quirks.
445 * String literals must be recognized based on context - there is no
446 * quoting or escaping support. There's also nothing to explicitly indicate
447 * when a label section completes. We deal with that by ending a label
448 * section whenever we see a line that doesn't include.
449 *
450 * As with the syslinux family, this same file format could be reused in the
451 * future for non pxe purposes. The only action it takes during parsing that
452 * would throw this off is handling of include files. It assumes we're using
453 * pxe, and does a tftp download of a file listed as an include file in the
454 * middle of the parsing operation. That could be handled by refactoring it to
455 * take a 'include file getter' function.
456 */
457
458 /*
459 * Describes a single label given in a pxe file.
460 *
461 * Create these with the 'label_create' function given below.
462 *
463 * name - the name of the menu as given on the 'menu label' line.
464 * kernel - the path to the kernel file to use for this label.
465 * append - kernel command line to use when booting this label
466 * initrd - path to the initrd to use for this label.
467 * attempted - 0 if we haven't tried to boot this label, 1 if we have.
468 * localboot - 1 if this label specified 'localboot', 0 otherwise.
469 * list - lets these form a list, which a pxe_menu struct will hold.
470 */
471 struct pxe_label {
472 char num[4];
473 char *name;
474 char *menu;
475 char *kernel;
476 char *append;
477 char *initrd;
478 char *fdt;
479 char *fdtdir;
480 int ipappend;
481 int attempted;
482 int localboot;
483 int localboot_val;
484 struct list_head list;
485 };
486
487 /*
488 * Describes a pxe menu as given via pxe files.
489 *
490 * title - the name of the menu as given by a 'menu title' line.
491 * default_label - the name of the default label, if any.
492 * timeout - time in tenths of a second to wait for a user key-press before
493 * booting the default label.
494 * prompt - if 0, don't prompt for a choice unless the timeout period is
495 * interrupted. If 1, always prompt for a choice regardless of
496 * timeout.
497 * labels - a list of labels defined for the menu.
498 */
499 struct pxe_menu {
500 char *title;
501 char *default_label;
502 int timeout;
503 int prompt;
504 struct list_head labels;
505 };
506
507 /*
508 * Allocates memory for and initializes a pxe_label. This uses malloc, so the
509 * result must be free()'d to reclaim the memory.
510 *
511 * Returns NULL if malloc fails.
512 */
513 static struct pxe_label *label_create(void)
514 {
515 struct pxe_label *label;
516
517 label = malloc(sizeof(struct pxe_label));
518
519 if (!label)
520 return NULL;
521
522 memset(label, 0, sizeof(struct pxe_label));
523
524 return label;
525 }
526
527 /*
528 * Free the memory used by a pxe_label, including that used by its name,
529 * kernel, append and initrd members, if they're non NULL.
530 *
531 * So - be sure to only use dynamically allocated memory for the members of
532 * the pxe_label struct, unless you want to clean it up first. These are
533 * currently only created by the pxe file parsing code.
534 */
535 static void label_destroy(struct pxe_label *label)
536 {
537 if (label->name)
538 free(label->name);
539
540 if (label->kernel)
541 free(label->kernel);
542
543 if (label->append)
544 free(label->append);
545
546 if (label->initrd)
547 free(label->initrd);
548
549 if (label->fdt)
550 free(label->fdt);
551
552 if (label->fdtdir)
553 free(label->fdtdir);
554
555 free(label);
556 }
557
558 /*
559 * Print a label and its string members if they're defined.
560 *
561 * This is passed as a callback to the menu code for displaying each
562 * menu entry.
563 */
564 static void label_print(void *data)
565 {
566 struct pxe_label *label = data;
567 const char *c = label->menu ? label->menu : label->name;
568
569 printf("%s:\t%s\n", label->num, c);
570 }
571
572 /*
573 * Boot a label that specified 'localboot'. This requires that the 'localcmd'
574 * environment variable is defined. Its contents will be executed as U-Boot
575 * command. If the label specified an 'append' line, its contents will be
576 * used to overwrite the contents of the 'bootargs' environment variable prior
577 * to running 'localcmd'.
578 *
579 * Returns 1 on success or < 0 on error.
580 */
581 static int label_localboot(struct pxe_label *label)
582 {
583 char *localcmd;
584
585 localcmd = from_env("localcmd");
586
587 if (!localcmd)
588 return -ENOENT;
589
590 if (label->append) {
591 char bootargs[CONFIG_SYS_CBSIZE];
592
593 cli_simple_process_macros(label->append, bootargs);
594 setenv("bootargs", bootargs);
595 }
596
597 debug("running: %s\n", localcmd);
598
599 return run_command_list(localcmd, strlen(localcmd), 0);
600 }
601
602 /*
603 * Boot according to the contents of a pxe_label.
604 *
605 * If we can't boot for any reason, we return. A successful boot never
606 * returns.
607 *
608 * The kernel will be stored in the location given by the 'kernel_addr_r'
609 * environment variable.
610 *
611 * If the label specifies an initrd file, it will be stored in the location
612 * given by the 'ramdisk_addr_r' environment variable.
613 *
614 * If the label specifies an 'append' line, its contents will overwrite that
615 * of the 'bootargs' environment variable.
616 */
617 static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)
618 {
619 char *bootm_argv[] = { "bootm", NULL, NULL, NULL, NULL };
620 char initrd_str[22];
621 char mac_str[29] = "";
622 char ip_str[68] = "";
623 int bootm_argc = 2;
624 int len = 0;
625 ulong kernel_addr;
626 void *buf;
627
628 label_print(label);
629
630 label->attempted = 1;
631
632 if (label->localboot) {
633 if (label->localboot_val >= 0)
634 label_localboot(label);
635 return 0;
636 }
637
638 if (label->kernel == NULL) {
639 printf("No kernel given, skipping %s\n",
640 label->name);
641 return 1;
642 }
643
644 if (label->initrd) {
645 if (get_relfile_envaddr(cmdtp, label->initrd, "ramdisk_addr_r") < 0) {
646 printf("Skipping %s for failure retrieving initrd\n",
647 label->name);
648 return 1;
649 }
650
651 bootm_argv[2] = initrd_str;
652 strcpy(bootm_argv[2], getenv("ramdisk_addr_r"));
653 strcat(bootm_argv[2], ":");
654 strcat(bootm_argv[2], getenv("filesize"));
655 }
656
657 if (get_relfile_envaddr(cmdtp, label->kernel, "kernel_addr_r") < 0) {
658 printf("Skipping %s for failure retrieving kernel\n",
659 label->name);
660 return 1;
661 }
662
663 if (label->ipappend & 0x1) {
664 sprintf(ip_str, " ip=%s:%s:%s:%s",
665 getenv("ipaddr"), getenv("serverip"),
666 getenv("gatewayip"), getenv("netmask"));
667 }
668
669 #ifdef CONFIG_CMD_NET
670 if (label->ipappend & 0x2) {
671 int err;
672 strcpy(mac_str, " BOOTIF=");
673 err = format_mac_pxe(mac_str + 8, sizeof(mac_str) - 8);
674 if (err < 0)
675 mac_str[0] = '\0';
676 }
677 #endif
678
679 if ((label->ipappend & 0x3) || label->append) {
680 char bootargs[CONFIG_SYS_CBSIZE] = "";
681 char finalbootargs[CONFIG_SYS_CBSIZE];
682
683 if (strlen(label->append ?: "") +
684 strlen(ip_str) + strlen(mac_str) + 1 > sizeof(bootargs)) {
685 printf("bootarg overflow %zd+%zd+%zd+1 > %zd\n",
686 strlen(label->append ?: ""),
687 strlen(ip_str), strlen(mac_str),
688 sizeof(bootargs));
689 return 1;
690 }
691
692 if (label->append)
693 strcpy(bootargs, label->append);
694 strcat(bootargs, ip_str);
695 strcat(bootargs, mac_str);
696
697 cli_simple_process_macros(bootargs, finalbootargs);
698 setenv("bootargs", finalbootargs);
699 printf("append: %s\n", finalbootargs);
700 }
701
702 bootm_argv[1] = getenv("kernel_addr_r");
703
704 /*
705 * fdt usage is optional:
706 * It handles the following scenarios. All scenarios are exclusive
707 *
708 * Scenario 1: If fdt_addr_r specified and "fdt" label is defined in
709 * pxe file, retrieve fdt blob from server. Pass fdt_addr_r to bootm,
710 * and adjust argc appropriately.
711 *
712 * Scenario 2: If there is an fdt_addr specified, pass it along to
713 * bootm, and adjust argc appropriately.
714 *
715 * Scenario 3: fdt blob is not available.
716 */
717 bootm_argv[3] = getenv("fdt_addr_r");
718
719 /* if fdt label is defined then get fdt from server */
720 if (bootm_argv[3]) {
721 char *fdtfile = NULL;
722 char *fdtfilefree = NULL;
723
724 if (label->fdt) {
725 fdtfile = label->fdt;
726 } else if (label->fdtdir) {
727 char *f1, *f2, *f3, *f4, *slash;
728
729 f1 = getenv("fdtfile");
730 if (f1) {
731 f2 = "";
732 f3 = "";
733 f4 = "";
734 } else {
735 /*
736 * For complex cases where this code doesn't
737 * generate the correct filename, the board
738 * code should set $fdtfile during early boot,
739 * or the boot scripts should set $fdtfile
740 * before invoking "pxe" or "sysboot".
741 */
742 f1 = getenv("soc");
743 f2 = "-";
744 f3 = getenv("board");
745 f4 = ".dtb";
746 }
747
748 len = strlen(label->fdtdir);
749 if (!len)
750 slash = "./";
751 else if (label->fdtdir[len - 1] != '/')
752 slash = "/";
753 else
754 slash = "";
755
756 len = strlen(label->fdtdir) + strlen(slash) +
757 strlen(f1) + strlen(f2) + strlen(f3) +
758 strlen(f4) + 1;
759 fdtfilefree = malloc(len);
760 if (!fdtfilefree) {
761 printf("malloc fail (FDT filename)\n");
762 return 1;
763 }
764
765 snprintf(fdtfilefree, len, "%s%s%s%s%s%s",
766 label->fdtdir, slash, f1, f2, f3, f4);
767 fdtfile = fdtfilefree;
768 }
769
770 if (fdtfile) {
771 int err = get_relfile_envaddr(cmdtp, fdtfile, "fdt_addr_r");
772 free(fdtfilefree);
773 if (err < 0) {
774 printf("Skipping %s for failure retrieving fdt\n",
775 label->name);
776 return 1;
777 }
778 } else {
779 bootm_argv[3] = NULL;
780 }
781 }
782
783 if (!bootm_argv[3])
784 bootm_argv[3] = getenv("fdt_addr");
785
786 if (bootm_argv[3]) {
787 if (!bootm_argv[2])
788 bootm_argv[2] = "-";
789 bootm_argc = 4;
790 }
791
792 kernel_addr = genimg_get_kernel_addr(bootm_argv[1]);
793 buf = map_sysmem(kernel_addr, 0);
794 /* Try bootm for legacy and FIT format image */
795 if (genimg_get_format(buf) != IMAGE_FORMAT_INVALID)
796 do_bootm(cmdtp, 0, bootm_argc, bootm_argv);
797 #ifdef CONFIG_CMD_BOOTI
798 /* Try booting an AArch64 Linux kernel image */
799 else
800 do_booti(cmdtp, 0, bootm_argc, bootm_argv);
801 #elif defined(CONFIG_CMD_BOOTZ)
802 /* Try booting a Image */
803 else
804 do_bootz(cmdtp, 0, bootm_argc, bootm_argv);
805 #endif
806 unmap_sysmem(buf);
807 return 1;
808 }
809
810 /*
811 * Tokens for the pxe file parser.
812 */
813 enum token_type {
814 T_EOL,
815 T_STRING,
816 T_EOF,
817 T_MENU,
818 T_TITLE,
819 T_TIMEOUT,
820 T_LABEL,
821 T_KERNEL,
822 T_LINUX,
823 T_APPEND,
824 T_INITRD,
825 T_LOCALBOOT,
826 T_DEFAULT,
827 T_PROMPT,
828 T_INCLUDE,
829 T_FDT,
830 T_FDTDIR,
831 T_ONTIMEOUT,
832 T_IPAPPEND,
833 T_INVALID
834 };
835
836 /*
837 * A token - given by a value and a type.
838 */
839 struct token {
840 char *val;
841 enum token_type type;
842 };
843
844 /*
845 * Keywords recognized.
846 */
847 static const struct token keywords[] = {
848 {"menu", T_MENU},
849 {"title", T_TITLE},
850 {"timeout", T_TIMEOUT},
851 {"default", T_DEFAULT},
852 {"prompt", T_PROMPT},
853 {"label", T_LABEL},
854 {"kernel", T_KERNEL},
855 {"linux", T_LINUX},
856 {"localboot", T_LOCALBOOT},
857 {"append", T_APPEND},
858 {"initrd", T_INITRD},
859 {"include", T_INCLUDE},
860 {"devicetree", T_FDT},
861 {"fdt", T_FDT},
862 {"devicetreedir", T_FDTDIR},
863 {"fdtdir", T_FDTDIR},
864 {"ontimeout", T_ONTIMEOUT,},
865 {"ipappend", T_IPAPPEND,},
866 {NULL, T_INVALID}
867 };
868
869 /*
870 * Since pxe(linux) files don't have a token to identify the start of a
871 * literal, we have to keep track of when we're in a state where a literal is
872 * expected vs when we're in a state a keyword is expected.
873 */
874 enum lex_state {
875 L_NORMAL = 0,
876 L_KEYWORD,
877 L_SLITERAL
878 };
879
880 /*
881 * get_string retrieves a string from *p and stores it as a token in
882 * *t.
883 *
884 * get_string used for scanning both string literals and keywords.
885 *
886 * Characters from *p are copied into t-val until a character equal to
887 * delim is found, or a NUL byte is reached. If delim has the special value of
888 * ' ', any whitespace character will be used as a delimiter.
889 *
890 * If lower is unequal to 0, uppercase characters will be converted to
891 * lowercase in the result. This is useful to make keywords case
892 * insensitive.
893 *
894 * The location of *p is updated to point to the first character after the end
895 * of the token - the ending delimiter.
896 *
897 * On success, the new value of t->val is returned. Memory for t->val is
898 * allocated using malloc and must be free()'d to reclaim it. If insufficient
899 * memory is available, NULL is returned.
900 */
901 static char *get_string(char **p, struct token *t, char delim, int lower)
902 {
903 char *b, *e;
904 size_t len, i;
905
906 /*
907 * b and e both start at the beginning of the input stream.
908 *
909 * e is incremented until we find the ending delimiter, or a NUL byte
910 * is reached. Then, we take e - b to find the length of the token.
911 */
912 b = e = *p;
913
914 while (*e) {
915 if ((delim == ' ' && isspace(*e)) || delim == *e)
916 break;
917 e++;
918 }
919
920 len = e - b;
921
922 /*
923 * Allocate memory to hold the string, and copy it in, converting
924 * characters to lowercase if lower is != 0.
925 */
926 t->val = malloc(len + 1);
927 if (!t->val)
928 return NULL;
929
930 for (i = 0; i < len; i++, b++) {
931 if (lower)
932 t->val[i] = tolower(*b);
933 else
934 t->val[i] = *b;
935 }
936
937 t->val[len] = '\0';
938
939 /*
940 * Update *p so the caller knows where to continue scanning.
941 */
942 *p = e;
943
944 t->type = T_STRING;
945
946 return t->val;
947 }
948
949 /*
950 * Populate a keyword token with a type and value.
951 */
952 static void get_keyword(struct token *t)
953 {
954 int i;
955
956 for (i = 0; keywords[i].val; i++) {
957 if (!strcmp(t->val, keywords[i].val)) {
958 t->type = keywords[i].type;
959 break;
960 }
961 }
962 }
963
964 /*
965 * Get the next token. We have to keep track of which state we're in to know
966 * if we're looking to get a string literal or a keyword.
967 *
968 * *p is updated to point at the first character after the current token.
969 */
970 static void get_token(char **p, struct token *t, enum lex_state state)
971 {
972 char *c = *p;
973
974 t->type = T_INVALID;
975
976 /* eat non EOL whitespace */
977 while (isblank(*c))
978 c++;
979
980 /*
981 * eat comments. note that string literals can't begin with #, but
982 * can contain a # after their first character.
983 */
984 if (*c == '#') {
985 while (*c && *c != '\n')
986 c++;
987 }
988
989 if (*c == '\n') {
990 t->type = T_EOL;
991 c++;
992 } else if (*c == '\0') {
993 t->type = T_EOF;
994 c++;
995 } else if (state == L_SLITERAL) {
996 get_string(&c, t, '\n', 0);
997 } else if (state == L_KEYWORD) {
998 /*
999 * when we expect a keyword, we first get the next string
1000 * token delimited by whitespace, and then check if it
1001 * matches a keyword in our keyword list. if it does, it's
1002 * converted to a keyword token of the appropriate type, and
1003 * if not, it remains a string token.
1004 */
1005 get_string(&c, t, ' ', 1);
1006 get_keyword(t);
1007 }
1008
1009 *p = c;
1010 }
1011
1012 /*
1013 * Increment *c until we get to the end of the current line, or EOF.
1014 */
1015 static void eol_or_eof(char **c)
1016 {
1017 while (**c && **c != '\n')
1018 (*c)++;
1019 }
1020
1021 /*
1022 * All of these parse_* functions share some common behavior.
1023 *
1024 * They finish with *c pointing after the token they parse, and return 1 on
1025 * success, or < 0 on error.
1026 */
1027
1028 /*
1029 * Parse a string literal and store a pointer it at *dst. String literals
1030 * terminate at the end of the line.
1031 */
1032 static int parse_sliteral(char **c, char **dst)
1033 {
1034 struct token t;
1035 char *s = *c;
1036
1037 get_token(c, &t, L_SLITERAL);
1038
1039 if (t.type != T_STRING) {
1040 printf("Expected string literal: %.*s\n", (int)(*c - s), s);
1041 return -EINVAL;
1042 }
1043
1044 *dst = t.val;
1045
1046 return 1;
1047 }
1048
1049 /*
1050 * Parse a base 10 (unsigned) integer and store it at *dst.
1051 */
1052 static int parse_integer(char **c, int *dst)
1053 {
1054 struct token t;
1055 char *s = *c;
1056
1057 get_token(c, &t, L_SLITERAL);
1058
1059 if (t.type != T_STRING) {
1060 printf("Expected string: %.*s\n", (int)(*c - s), s);
1061 return -EINVAL;
1062 }
1063
1064 *dst = simple_strtol(t.val, NULL, 10);
1065
1066 free(t.val);
1067
1068 return 1;
1069 }
1070
1071 static int parse_pxefile_top(cmd_tbl_t *cmdtp, char *p, unsigned long base,
1072 struct pxe_menu *cfg, int nest_level);
1073
1074 /*
1075 * Parse an include statement, and retrieve and parse the file it mentions.
1076 *
1077 * base should point to a location where it's safe to store the file, and
1078 * nest_level should indicate how many nested includes have occurred. For this
1079 * include, nest_level has already been incremented and doesn't need to be
1080 * incremented here.
1081 */
1082 static int handle_include(cmd_tbl_t *cmdtp, char **c, unsigned long base,
1083 struct pxe_menu *cfg, int nest_level)
1084 {
1085 char *include_path;
1086 char *s = *c;
1087 int err;
1088 char *buf;
1089 int ret;
1090
1091 err = parse_sliteral(c, &include_path);
1092
1093 if (err < 0) {
1094 printf("Expected include path: %.*s\n",
1095 (int)(*c - s), s);
1096 return err;
1097 }
1098
1099 err = get_pxe_file(cmdtp, include_path, base);
1100
1101 if (err < 0) {
1102 printf("Couldn't retrieve %s\n", include_path);
1103 return err;
1104 }
1105
1106 buf = map_sysmem(base, 0);
1107 ret = parse_pxefile_top(cmdtp, buf, base, cfg, nest_level);
1108 unmap_sysmem(buf);
1109
1110 return ret;
1111 }
1112
1113 /*
1114 * Parse lines that begin with 'menu'.
1115 *
1116 * base and nest are provided to handle the 'menu include' case.
1117 *
1118 * base should point to a location where it's safe to store the included file.
1119 *
1120 * nest_level should be 1 when parsing the top level pxe file, 2 when parsing
1121 * a file it includes, 3 when parsing a file included by that file, and so on.
1122 */
1123 static int parse_menu(cmd_tbl_t *cmdtp, char **c, struct pxe_menu *cfg,
1124 unsigned long base, int nest_level)
1125 {
1126 struct token t;
1127 char *s = *c;
1128 int err = 0;
1129
1130 get_token(c, &t, L_KEYWORD);
1131
1132 switch (t.type) {
1133 case T_TITLE:
1134 err = parse_sliteral(c, &cfg->title);
1135
1136 break;
1137
1138 case T_INCLUDE:
1139 err = handle_include(cmdtp, c, base, cfg,
1140 nest_level + 1);
1141 break;
1142
1143 default:
1144 printf("Ignoring malformed menu command: %.*s\n",
1145 (int)(*c - s), s);
1146 }
1147
1148 if (err < 0)
1149 return err;
1150
1151 eol_or_eof(c);
1152
1153 return 1;
1154 }
1155
1156 /*
1157 * Handles parsing a 'menu line' when we're parsing a label.
1158 */
1159 static int parse_label_menu(char **c, struct pxe_menu *cfg,
1160 struct pxe_label *label)
1161 {
1162 struct token t;
1163 char *s;
1164
1165 s = *c;
1166
1167 get_token(c, &t, L_KEYWORD);
1168
1169 switch (t.type) {
1170 case T_DEFAULT:
1171 if (!cfg->default_label)
1172 cfg->default_label = strdup(label->name);
1173
1174 if (!cfg->default_label)
1175 return -ENOMEM;
1176
1177 break;
1178 case T_LABEL:
1179 parse_sliteral(c, &label->menu);
1180 break;
1181 default:
1182 printf("Ignoring malformed menu command: %.*s\n",
1183 (int)(*c - s), s);
1184 }
1185
1186 eol_or_eof(c);
1187
1188 return 0;
1189 }
1190
1191 /*
1192 * Parses a label and adds it to the list of labels for a menu.
1193 *
1194 * A label ends when we either get to the end of a file, or
1195 * get some input we otherwise don't have a handler defined
1196 * for.
1197 *
1198 */
1199 static int parse_label(char **c, struct pxe_menu *cfg)
1200 {
1201 struct token t;
1202 int len;
1203 char *s = *c;
1204 struct pxe_label *label;
1205 int err;
1206
1207 label = label_create();
1208 if (!label)
1209 return -ENOMEM;
1210
1211 err = parse_sliteral(c, &label->name);
1212 if (err < 0) {
1213 printf("Expected label name: %.*s\n", (int)(*c - s), s);
1214 label_destroy(label);
1215 return -EINVAL;
1216 }
1217
1218 list_add_tail(&label->list, &cfg->labels);
1219
1220 while (1) {
1221 s = *c;
1222 get_token(c, &t, L_KEYWORD);
1223
1224 err = 0;
1225 switch (t.type) {
1226 case T_MENU:
1227 err = parse_label_menu(c, cfg, label);
1228 break;
1229
1230 case T_KERNEL:
1231 case T_LINUX:
1232 err = parse_sliteral(c, &label->kernel);
1233 break;
1234
1235 case T_APPEND:
1236 err = parse_sliteral(c, &label->append);
1237 if (label->initrd)
1238 break;
1239 s = strstr(label->append, "initrd=");
1240 if (!s)
1241 break;
1242 s += 7;
1243 len = (int)(strchr(s, ' ') - s);
1244 label->initrd = malloc(len + 1);
1245 strncpy(label->initrd, s, len);
1246 label->initrd[len] = '\0';
1247
1248 break;
1249
1250 case T_INITRD:
1251 if (!label->initrd)
1252 err = parse_sliteral(c, &label->initrd);
1253 break;
1254
1255 case T_FDT:
1256 if (!label->fdt)
1257 err = parse_sliteral(c, &label->fdt);
1258 break;
1259
1260 case T_FDTDIR:
1261 if (!label->fdtdir)
1262 err = parse_sliteral(c, &label->fdtdir);
1263 break;
1264
1265 case T_LOCALBOOT:
1266 label->localboot = 1;
1267 err = parse_integer(c, &label->localboot_val);
1268 break;
1269
1270 case T_IPAPPEND:
1271 err = parse_integer(c, &label->ipappend);
1272 break;
1273
1274 case T_EOL:
1275 break;
1276
1277 default:
1278 /*
1279 * put the token back! we don't want it - it's the end
1280 * of a label and whatever token this is, it's
1281 * something for the menu level context to handle.
1282 */
1283 *c = s;
1284 return 1;
1285 }
1286
1287 if (err < 0)
1288 return err;
1289 }
1290 }
1291
1292 /*
1293 * This 16 comes from the limit pxelinux imposes on nested includes.
1294 *
1295 * There is no reason at all we couldn't do more, but some limit helps prevent
1296 * infinite (until crash occurs) recursion if a file tries to include itself.
1297 */
1298 #define MAX_NEST_LEVEL 16
1299
1300 /*
1301 * Entry point for parsing a menu file. nest_level indicates how many times
1302 * we've nested in includes. It will be 1 for the top level menu file.
1303 *
1304 * Returns 1 on success, < 0 on error.
1305 */
1306 static int parse_pxefile_top(cmd_tbl_t *cmdtp, char *p, unsigned long base,
1307 struct pxe_menu *cfg, int nest_level)
1308 {
1309 struct token t;
1310 char *s, *b, *label_name;
1311 int err;
1312
1313 b = p;
1314
1315 if (nest_level > MAX_NEST_LEVEL) {
1316 printf("Maximum nesting (%d) exceeded\n", MAX_NEST_LEVEL);
1317 return -EMLINK;
1318 }
1319
1320 while (1) {
1321 s = p;
1322
1323 get_token(&p, &t, L_KEYWORD);
1324
1325 err = 0;
1326 switch (t.type) {
1327 case T_MENU:
1328 cfg->prompt = 1;
1329 err = parse_menu(cmdtp, &p, cfg,
1330 base + ALIGN(strlen(b) + 1, 4),
1331 nest_level);
1332 break;
1333
1334 case T_TIMEOUT:
1335 err = parse_integer(&p, &cfg->timeout);
1336 break;
1337
1338 case T_LABEL:
1339 err = parse_label(&p, cfg);
1340 break;
1341
1342 case T_DEFAULT:
1343 case T_ONTIMEOUT:
1344 err = parse_sliteral(&p, &label_name);
1345
1346 if (label_name) {
1347 if (cfg->default_label)
1348 free(cfg->default_label);
1349
1350 cfg->default_label = label_name;
1351 }
1352
1353 break;
1354
1355 case T_INCLUDE:
1356 err = handle_include(cmdtp, &p,
1357 base + ALIGN(strlen(b), 4), cfg,
1358 nest_level + 1);
1359 break;
1360
1361 case T_PROMPT:
1362 eol_or_eof(&p);
1363 break;
1364
1365 case T_EOL:
1366 break;
1367
1368 case T_EOF:
1369 return 1;
1370
1371 default:
1372 printf("Ignoring unknown command: %.*s\n",
1373 (int)(p - s), s);
1374 eol_or_eof(&p);
1375 }
1376
1377 if (err < 0)
1378 return err;
1379 }
1380 }
1381
1382 /*
1383 * Free the memory used by a pxe_menu and its labels.
1384 */
1385 static void destroy_pxe_menu(struct pxe_menu *cfg)
1386 {
1387 struct list_head *pos, *n;
1388 struct pxe_label *label;
1389
1390 if (cfg->title)
1391 free(cfg->title);
1392
1393 if (cfg->default_label)
1394 free(cfg->default_label);
1395
1396 list_for_each_safe(pos, n, &cfg->labels) {
1397 label = list_entry(pos, struct pxe_label, list);
1398
1399 label_destroy(label);
1400 }
1401
1402 free(cfg);
1403 }
1404
1405 /*
1406 * Entry point for parsing a pxe file. This is only used for the top level
1407 * file.
1408 *
1409 * Returns NULL if there is an error, otherwise, returns a pointer to a
1410 * pxe_menu struct populated with the results of parsing the pxe file (and any
1411 * files it includes). The resulting pxe_menu struct can be free()'d by using
1412 * the destroy_pxe_menu() function.
1413 */
1414 static struct pxe_menu *parse_pxefile(cmd_tbl_t *cmdtp, unsigned long menucfg)
1415 {
1416 struct pxe_menu *cfg;
1417 char *buf;
1418 int r;
1419
1420 cfg = malloc(sizeof(struct pxe_menu));
1421
1422 if (!cfg)
1423 return NULL;
1424
1425 memset(cfg, 0, sizeof(struct pxe_menu));
1426
1427 INIT_LIST_HEAD(&cfg->labels);
1428
1429 buf = map_sysmem(menucfg, 0);
1430 r = parse_pxefile_top(cmdtp, buf, menucfg, cfg, 1);
1431 unmap_sysmem(buf);
1432
1433 if (r < 0) {
1434 destroy_pxe_menu(cfg);
1435 return NULL;
1436 }
1437
1438 return cfg;
1439 }
1440
1441 /*
1442 * Converts a pxe_menu struct into a menu struct for use with U-Boot's generic
1443 * menu code.
1444 */
1445 static struct menu *pxe_menu_to_menu(struct pxe_menu *cfg)
1446 {
1447 struct pxe_label *label;
1448 struct list_head *pos;
1449 struct menu *m;
1450 int err;
1451 int i = 1;
1452 char *default_num = NULL;
1453
1454 /*
1455 * Create a menu and add items for all the labels.
1456 */
1457 m = menu_create(cfg->title, cfg->timeout, cfg->prompt, label_print,
1458 NULL, NULL);
1459
1460 if (!m)
1461 return NULL;
1462
1463 list_for_each(pos, &cfg->labels) {
1464 label = list_entry(pos, struct pxe_label, list);
1465
1466 sprintf(label->num, "%d", i++);
1467 if (menu_item_add(m, label->num, label) != 1) {
1468 menu_destroy(m);
1469 return NULL;
1470 }
1471 if (cfg->default_label &&
1472 (strcmp(label->name, cfg->default_label) == 0))
1473 default_num = label->num;
1474
1475 }
1476
1477 /*
1478 * After we've created items for each label in the menu, set the
1479 * menu's default label if one was specified.
1480 */
1481 if (default_num) {
1482 err = menu_default_set(m, default_num);
1483 if (err != 1) {
1484 if (err != -ENOENT) {
1485 menu_destroy(m);
1486 return NULL;
1487 }
1488
1489 printf("Missing default: %s\n", cfg->default_label);
1490 }
1491 }
1492
1493 return m;
1494 }
1495
1496 /*
1497 * Try to boot any labels we have yet to attempt to boot.
1498 */
1499 static void boot_unattempted_labels(cmd_tbl_t *cmdtp, struct pxe_menu *cfg)
1500 {
1501 struct list_head *pos;
1502 struct pxe_label *label;
1503
1504 list_for_each(pos, &cfg->labels) {
1505 label = list_entry(pos, struct pxe_label, list);
1506
1507 if (!label->attempted)
1508 label_boot(cmdtp, label);
1509 }
1510 }
1511
1512 /*
1513 * Boot the system as prescribed by a pxe_menu.
1514 *
1515 * Use the menu system to either get the user's choice or the default, based
1516 * on config or user input. If there is no default or user's choice,
1517 * attempted to boot labels in the order they were given in pxe files.
1518 * If the default or user's choice fails to boot, attempt to boot other
1519 * labels in the order they were given in pxe files.
1520 *
1521 * If this function returns, there weren't any labels that successfully
1522 * booted, or the user interrupted the menu selection via ctrl+c.
1523 */
1524 static void handle_pxe_menu(cmd_tbl_t *cmdtp, struct pxe_menu *cfg)
1525 {
1526 void *choice;
1527 struct menu *m;
1528 int err;
1529
1530 m = pxe_menu_to_menu(cfg);
1531 if (!m)
1532 return;
1533
1534 err = menu_get_choice(m, &choice);
1535
1536 menu_destroy(m);
1537
1538 /*
1539 * err == 1 means we got a choice back from menu_get_choice.
1540 *
1541 * err == -ENOENT if the menu was setup to select the default but no
1542 * default was set. in that case, we should continue trying to boot
1543 * labels that haven't been attempted yet.
1544 *
1545 * otherwise, the user interrupted or there was some other error and
1546 * we give up.
1547 */
1548
1549 if (err == 1) {
1550 err = label_boot(cmdtp, choice);
1551 if (!err)
1552 return;
1553 } else if (err != -ENOENT) {
1554 return;
1555 }
1556
1557 boot_unattempted_labels(cmdtp, cfg);
1558 }
1559
1560 #ifdef CONFIG_CMD_NET
1561 /*
1562 * Boots a system using a pxe file
1563 *
1564 * Returns 0 on success, 1 on error.
1565 */
1566 static int
1567 do_pxe_boot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1568 {
1569 unsigned long pxefile_addr_r;
1570 struct pxe_menu *cfg;
1571 char *pxefile_addr_str;
1572
1573 do_getfile = do_get_tftp;
1574
1575 if (argc == 1) {
1576 pxefile_addr_str = from_env("pxefile_addr_r");
1577 if (!pxefile_addr_str)
1578 return 1;
1579
1580 } else if (argc == 2) {
1581 pxefile_addr_str = argv[1];
1582 } else {
1583 return CMD_RET_USAGE;
1584 }
1585
1586 if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
1587 printf("Invalid pxefile address: %s\n", pxefile_addr_str);
1588 return 1;
1589 }
1590
1591 cfg = parse_pxefile(cmdtp, pxefile_addr_r);
1592
1593 if (cfg == NULL) {
1594 printf("Error parsing config file\n");
1595 return 1;
1596 }
1597
1598 handle_pxe_menu(cmdtp, cfg);
1599
1600 destroy_pxe_menu(cfg);
1601
1602 copy_filename(net_boot_file_name, "", sizeof(net_boot_file_name));
1603
1604 return 0;
1605 }
1606
1607 static cmd_tbl_t cmd_pxe_sub[] = {
1608 U_BOOT_CMD_MKENT(get, 1, 1, do_pxe_get, "", ""),
1609 U_BOOT_CMD_MKENT(boot, 2, 1, do_pxe_boot, "", "")
1610 };
1611
1612 static int do_pxe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1613 {
1614 cmd_tbl_t *cp;
1615
1616 if (argc < 2)
1617 return CMD_RET_USAGE;
1618
1619 is_pxe = true;
1620
1621 /* drop initial "pxe" arg */
1622 argc--;
1623 argv++;
1624
1625 cp = find_cmd_tbl(argv[0], cmd_pxe_sub, ARRAY_SIZE(cmd_pxe_sub));
1626
1627 if (cp)
1628 return cp->cmd(cmdtp, flag, argc, argv);
1629
1630 return CMD_RET_USAGE;
1631 }
1632
1633 U_BOOT_CMD(
1634 pxe, 3, 1, do_pxe,
1635 "commands to get and boot from pxe files",
1636 "get - try to retrieve a pxe file using tftp\npxe "
1637 "boot [pxefile_addr_r] - boot from the pxe file at pxefile_addr_r\n"
1638 );
1639 #endif
1640
1641 /*
1642 * Boots a system using a local disk syslinux/extlinux file
1643 *
1644 * Returns 0 on success, 1 on error.
1645 */
1646 static int do_sysboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1647 {
1648 unsigned long pxefile_addr_r;
1649 struct pxe_menu *cfg;
1650 char *pxefile_addr_str;
1651 char *filename;
1652 int prompt = 0;
1653
1654 is_pxe = false;
1655
1656 if (argc > 1 && strstr(argv[1], "-p")) {
1657 prompt = 1;
1658 argc--;
1659 argv++;
1660 }
1661
1662 if (argc < 4)
1663 return cmd_usage(cmdtp);
1664
1665 if (argc < 5) {
1666 pxefile_addr_str = from_env("pxefile_addr_r");
1667 if (!pxefile_addr_str)
1668 return 1;
1669 } else {
1670 pxefile_addr_str = argv[4];
1671 }
1672
1673 if (argc < 6)
1674 filename = getenv("bootfile");
1675 else {
1676 filename = argv[5];
1677 setenv("bootfile", filename);
1678 }
1679
1680 if (strstr(argv[3], "ext2"))
1681 do_getfile = do_get_ext2;
1682 else if (strstr(argv[3], "fat"))
1683 do_getfile = do_get_fat;
1684 else if (strstr(argv[3], "any"))
1685 do_getfile = do_get_any;
1686 else {
1687 printf("Invalid filesystem: %s\n", argv[3]);
1688 return 1;
1689 }
1690 fs_argv[1] = argv[1];
1691 fs_argv[2] = argv[2];
1692
1693 if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
1694 printf("Invalid pxefile address: %s\n", pxefile_addr_str);
1695 return 1;
1696 }
1697
1698 if (get_pxe_file(cmdtp, filename, pxefile_addr_r) < 0) {
1699 printf("Error reading config file\n");
1700 return 1;
1701 }
1702
1703 cfg = parse_pxefile(cmdtp, pxefile_addr_r);
1704
1705 if (cfg == NULL) {
1706 printf("Error parsing config file\n");
1707 return 1;
1708 }
1709
1710 if (prompt)
1711 cfg->prompt = 1;
1712
1713 handle_pxe_menu(cmdtp, cfg);
1714
1715 destroy_pxe_menu(cfg);
1716
1717 return 0;
1718 }
1719
1720 U_BOOT_CMD(
1721 sysboot, 7, 1, do_sysboot,
1722 "command to get and boot from syslinux files",
1723 "[-p] <interface> <dev[:part]> <ext2|fat|any> [addr] [filename]\n"
1724 " - load and parse syslinux menu file 'filename' from ext2, fat\n"
1725 " or any filesystem on 'dev' on 'interface' to address 'addr'"
1726 );