blob: 4cbb2b11734542caf44fcc9fd1c01ec21dc26e33 [file] [log] [blame]
Jason Hobbs06283a62011-08-31 10:37:30 -05001/*
2 * Copyright 2010-2011 Calxeda, Inc.
Bryan Wu1fb7d0e2014-07-31 17:39:59 -07003 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
Jason Hobbs06283a62011-08-31 10:37:30 -05004 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
Jason Hobbs06283a62011-08-31 10:37:30 -05006 */
Wolfgang Denk1a459662013-07-08 09:37:19 +02007
Jason Hobbs06283a62011-08-31 10:37:30 -05008#include <common.h>
9#include <command.h>
10#include <malloc.h>
Joe Hershberger0eb25b62015-03-22 17:08:59 -050011#include <mapmem.h>
Jason Hobbs06283a62011-08-31 10:37:30 -050012#include <linux/string.h>
13#include <linux/ctype.h>
14#include <errno.h>
15#include <linux/list.h>
Dennis Gilmore6d1a3e52014-02-04 05:25:46 -060016#include <fs.h>
Sjoerd Simons4a0bd102015-04-13 22:54:25 +020017#include <asm/io.h>
Jason Hobbs06283a62011-08-31 10:37:30 -050018
19#include "menu.h"
Hans de Goedeb1ba62d2014-08-06 09:37:39 +020020#include "cli.h"
Jason Hobbs06283a62011-08-31 10:37:30 -050021
22#define MAX_TFTP_PATH_LEN 127
23
Rob Herring39f98552012-12-02 21:00:28 -060024const char *pxe_default_paths[] = {
Joe Hershberger58d9ff92013-06-24 17:21:04 -050025#ifdef CONFIG_SYS_SOC
Rob Herring39f98552012-12-02 21:00:28 -060026 "default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC,
Joe Hershberger58d9ff92013-06-24 17:21:04 -050027#endif
Rob Herring39f98552012-12-02 21:00:28 -060028 "default-" CONFIG_SYS_ARCH,
29 "default",
30 NULL
31};
32
Rob Herringe5a9a402013-10-18 13:04:42 -050033static bool is_pxe;
34
Jason Hobbs06283a62011-08-31 10:37:30 -050035/*
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 */
Rob Herring23b71942012-12-02 21:00:21 -060040static char *from_env(const char *envvar)
Jason Hobbs06283a62011-08-31 10:37:30 -050041{
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
Stephen Warrenb81fdb02014-02-05 20:49:20 -070052#ifdef CONFIG_CMD_NET
Jason Hobbs06283a62011-08-31 10:37:30 -050053/*
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 */
63static int format_mac_pxe(char *outbuf, size_t outbuf_len)
64{
Rob Herringef034c92012-12-02 21:00:20 -060065 uchar ethaddr[6];
Jason Hobbs06283a62011-08-31 10:37:30 -050066
Rob Herringef034c92012-12-02 21:00:20 -060067 if (outbuf_len < 21) {
David Feng5cea95c2013-12-14 11:47:30 +080068 printf("outbuf is too small (%zd < 21)\n", outbuf_len);
Jason Hobbs06283a62011-08-31 10:37:30 -050069
70 return -EINVAL;
71 }
72
Rob Herringef034c92012-12-02 21:00:20 -060073 if (!eth_getenv_enetaddr_by_index("eth", eth_get_dev_index(),
74 ethaddr))
75 return -ENOENT;
Jason Hobbs06283a62011-08-31 10:37:30 -050076
Rob Herringef034c92012-12-02 21:00:20 -060077 sprintf(outbuf, "01-%02x-%02x-%02x-%02x-%02x-%02x",
78 ethaddr[0], ethaddr[1], ethaddr[2],
79 ethaddr[3], ethaddr[4], ethaddr[5]);
Jason Hobbs06283a62011-08-31 10:37:30 -050080
81 return 1;
82}
Stephen Warrenb81fdb02014-02-05 20:49:20 -070083#endif
Jason Hobbs06283a62011-08-31 10:37:30 -050084
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 */
Rob Herring90ba7d72012-03-28 05:51:36 +000090static int get_bootfile_path(const char *file_path, char *bootfile_path,
91 size_t bootfile_path_size)
Jason Hobbs06283a62011-08-31 10:37:30 -050092{
93 char *bootfile, *last_slash;
Rob Herring90ba7d72012-03-28 05:51:36 +000094 size_t path_len = 0;
95
Rob Herringe5a9a402013-10-18 13:04:42 -050096 /* Only syslinux allows absolute paths */
97 if (file_path[0] == '/' && !is_pxe)
Rob Herring90ba7d72012-03-28 05:51:36 +000098 goto ret;
Jason Hobbs06283a62011-08-31 10:37:30 -050099
100 bootfile = from_env("bootfile");
101
Rob Herring90ba7d72012-03-28 05:51:36 +0000102 if (!bootfile)
103 goto ret;
Jason Hobbs06283a62011-08-31 10:37:30 -0500104
105 last_slash = strrchr(bootfile, '/');
106
Rob Herring90ba7d72012-03-28 05:51:36 +0000107 if (last_slash == NULL)
108 goto ret;
Jason Hobbs06283a62011-08-31 10:37:30 -0500109
110 path_len = (last_slash - bootfile) + 1;
111
112 if (bootfile_path_size < path_len) {
David Feng5cea95c2013-12-14 11:47:30 +0800113 printf("bootfile_path too small. (%zd < %zd)\n",
Jason Hobbs06283a62011-08-31 10:37:30 -0500114 bootfile_path_size, path_len);
115
116 return -1;
117 }
118
119 strncpy(bootfile_path, bootfile, path_len);
120
Rob Herring90ba7d72012-03-28 05:51:36 +0000121 ret:
Jason Hobbs06283a62011-08-31 10:37:30 -0500122 bootfile_path[path_len] = '\0';
123
124 return 1;
125}
126
Steven Falco0e3f3f82013-10-07 09:51:48 -0400127static int (*do_getfile)(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr);
Rob Herring669df7e2012-05-25 10:47:39 +0000128
Stephen Warrenb81fdb02014-02-05 20:49:20 -0700129#ifdef CONFIG_CMD_NET
Steven Falco0e3f3f82013-10-07 09:51:48 -0400130static int do_get_tftp(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
Rob Herring669df7e2012-05-25 10:47:39 +0000131{
132 char *tftp_argv[] = {"tftp", NULL, NULL, NULL};
133
134 tftp_argv[1] = file_addr;
Rob Herring23b71942012-12-02 21:00:21 -0600135 tftp_argv[2] = (void *)file_path;
Rob Herring669df7e2012-05-25 10:47:39 +0000136
Steven Falco0e3f3f82013-10-07 09:51:48 -0400137 if (do_tftpb(cmdtp, 0, 3, tftp_argv))
Rob Herring669df7e2012-05-25 10:47:39 +0000138 return -ENOENT;
139
140 return 1;
141}
Stephen Warrenb81fdb02014-02-05 20:49:20 -0700142#endif
Rob Herring669df7e2012-05-25 10:47:39 +0000143
144static char *fs_argv[5];
145
Steven Falco0e3f3f82013-10-07 09:51:48 -0400146static int do_get_ext2(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
Rob Herring669df7e2012-05-25 10:47:39 +0000147{
148#ifdef CONFIG_CMD_EXT2
149 fs_argv[0] = "ext2load";
150 fs_argv[3] = file_addr;
Rob Herring23b71942012-12-02 21:00:21 -0600151 fs_argv[4] = (void *)file_path;
Rob Herring669df7e2012-05-25 10:47:39 +0000152
Steven Falco0e3f3f82013-10-07 09:51:48 -0400153 if (!do_ext2load(cmdtp, 0, 5, fs_argv))
Rob Herring669df7e2012-05-25 10:47:39 +0000154 return 1;
155#endif
156 return -ENOENT;
157}
158
Steven Falco0e3f3f82013-10-07 09:51:48 -0400159static int do_get_fat(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
Rob Herring669df7e2012-05-25 10:47:39 +0000160{
161#ifdef CONFIG_CMD_FAT
162 fs_argv[0] = "fatload";
163 fs_argv[3] = file_addr;
Rob Herring23b71942012-12-02 21:00:21 -0600164 fs_argv[4] = (void *)file_path;
Rob Herring669df7e2012-05-25 10:47:39 +0000165
Steven Falco0e3f3f82013-10-07 09:51:48 -0400166 if (!do_fat_fsload(cmdtp, 0, 5, fs_argv))
Rob Herring669df7e2012-05-25 10:47:39 +0000167 return 1;
168#endif
169 return -ENOENT;
170}
171
Dennis Gilmore6d1a3e52014-02-04 05:25:46 -0600172static 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
Jason Hobbs06283a62011-08-31 10:37:30 -0500185/*
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 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200193static int get_relfile(cmd_tbl_t *cmdtp, const char *file_path,
194 unsigned long file_addr)
Jason Hobbs06283a62011-08-31 10:37:30 -0500195{
196 size_t path_len;
197 char relfile[MAX_TFTP_PATH_LEN+1];
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200198 char addr_buf[18];
Jason Hobbs06283a62011-08-31 10:37:30 -0500199 int err;
200
Rob Herring90ba7d72012-03-28 05:51:36 +0000201 err = get_bootfile_path(file_path, relfile, sizeof(relfile));
Jason Hobbs06283a62011-08-31 10:37:30 -0500202
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
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200221 sprintf(addr_buf, "%lx", file_addr);
Jason Hobbs06283a62011-08-31 10:37:30 -0500222
Steven Falco0e3f3f82013-10-07 09:51:48 -0400223 return do_getfile(cmdtp, relfile, addr_buf);
Jason Hobbs06283a62011-08-31 10:37:30 -0500224}
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 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200233static int get_pxe_file(cmd_tbl_t *cmdtp, const char *file_path,
234 unsigned long file_addr)
Jason Hobbs06283a62011-08-31 10:37:30 -0500235{
236 unsigned long config_file_size;
237 char *tftp_filesize;
238 int err;
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200239 char *buf;
Jason Hobbs06283a62011-08-31 10:37:30 -0500240
Steven Falco0e3f3f82013-10-07 09:51:48 -0400241 err = get_relfile(cmdtp, file_path, file_addr);
Jason Hobbs06283a62011-08-31 10:37:30 -0500242
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
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200258 buf = map_sysmem(file_addr + config_file_size, 1);
259 *buf = '\0';
260 unmap_sysmem(buf);
Jason Hobbs06283a62011-08-31 10:37:30 -0500261
262 return 1;
263}
264
Stephen Warrenb81fdb02014-02-05 20:49:20 -0700265#ifdef CONFIG_CMD_NET
266
Jason Hobbs06283a62011-08-31 10:37:30 -0500267#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 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200276static int get_pxelinux_path(cmd_tbl_t *cmdtp, const char *file,
277 unsigned long pxefile_addr_r)
Jason Hobbs06283a62011-08-31 10:37:30 -0500278{
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
Steven Falco0e3f3f82013-10-07 09:51:48 -0400290 return get_pxe_file(cmdtp, path, pxefile_addr_r);
Jason Hobbs06283a62011-08-31 10:37:30 -0500291}
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 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200298static int pxe_uuid_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
Jason Hobbs06283a62011-08-31 10:37:30 -0500299{
300 char *uuid_str;
301
302 uuid_str = from_env("pxeuuid");
303
304 if (!uuid_str)
305 return -ENOENT;
306
Steven Falco0e3f3f82013-10-07 09:51:48 -0400307 return get_pxelinux_path(cmdtp, uuid_str, pxefile_addr_r);
Jason Hobbs06283a62011-08-31 10:37:30 -0500308}
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 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200316static int pxe_mac_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
Jason Hobbs06283a62011-08-31 10:37:30 -0500317{
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
Steven Falco0e3f3f82013-10-07 09:51:48 -0400326 return get_pxelinux_path(cmdtp, mac_str, pxefile_addr_r);
Jason Hobbs06283a62011-08-31 10:37:30 -0500327}
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 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200336static int pxe_ipaddr_paths(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
Jason Hobbs06283a62011-08-31 10:37:30 -0500337{
338 char ip_addr[9];
339 int mask_pos, err;
340
Joe Hershberger049a95a2015-04-08 01:41:01 -0500341 sprintf(ip_addr, "%08X", ntohl(net_ip.s_addr));
Jason Hobbs06283a62011-08-31 10:37:30 -0500342
343 for (mask_pos = 7; mask_pos >= 0; mask_pos--) {
Steven Falco0e3f3f82013-10-07 09:51:48 -0400344 err = get_pxelinux_path(cmdtp, ip_addr, pxefile_addr_r);
Jason Hobbs06283a62011-08-31 10:37:30 -0500345
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 */
369static int
370do_pxe_get(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
371{
372 char *pxefile_addr_str;
Jason Hobbs834c9382012-03-05 08:12:28 +0000373 unsigned long pxefile_addr_r;
Rob Herring39f98552012-12-02 21:00:28 -0600374 int err, i = 0;
Jason Hobbs06283a62011-08-31 10:37:30 -0500375
Rob Herring669df7e2012-05-25 10:47:39 +0000376 do_getfile = do_get_tftp;
377
Jason Hobbs06283a62011-08-31 10:37:30 -0500378 if (argc != 1)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000379 return CMD_RET_USAGE;
Jason Hobbs06283a62011-08-31 10:37:30 -0500380
Jason Hobbs06283a62011-08-31 10:37:30 -0500381 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 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200395 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) {
Jason Hobbs06283a62011-08-31 10:37:30 -0500398 printf("Config file found\n");
399
400 return 0;
401 }
402
Rob Herring39f98552012-12-02 21:00:28 -0600403 while (pxe_default_paths[i]) {
Steven Falco0e3f3f82013-10-07 09:51:48 -0400404 if (get_pxelinux_path(cmdtp, pxe_default_paths[i],
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200405 pxefile_addr_r) > 0) {
Rob Herring39f98552012-12-02 21:00:28 -0600406 printf("Config file found\n");
407 return 0;
408 }
409 i++;
410 }
411
Jason Hobbs06283a62011-08-31 10:37:30 -0500412 printf("Config file not found\n");
413
414 return 1;
415}
Stephen Warrenb81fdb02014-02-05 20:49:20 -0700416#endif
Jason Hobbs06283a62011-08-31 10:37:30 -0500417
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 */
Steven Falco0e3f3f82013-10-07 09:51:48 -0400425static int get_relfile_envaddr(cmd_tbl_t *cmdtp, const char *file_path, const char *envaddr_name)
Jason Hobbs06283a62011-08-31 10:37:30 -0500426{
Jason Hobbs834c9382012-03-05 08:12:28 +0000427 unsigned long file_addr;
Jason Hobbs06283a62011-08-31 10:37:30 -0500428 char *envaddr;
429
430 envaddr = from_env(envaddr_name);
431
432 if (!envaddr)
433 return -ENOENT;
434
Jason Hobbs834c9382012-03-05 08:12:28 +0000435 if (strict_strtoul(envaddr, 16, &file_addr) < 0)
Jason Hobbs06283a62011-08-31 10:37:30 -0500436 return -EINVAL;
437
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200438 return get_relfile(cmdtp, file_path, file_addr);
Jason Hobbs06283a62011-08-31 10:37:30 -0500439}
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 */
471struct pxe_label {
Rob Herring32d2ffe2012-12-02 21:00:26 -0600472 char num[4];
Jason Hobbs06283a62011-08-31 10:37:30 -0500473 char *name;
Rob Herring7815c4e2012-03-28 05:51:34 +0000474 char *menu;
Jason Hobbs06283a62011-08-31 10:37:30 -0500475 char *kernel;
476 char *append;
477 char *initrd;
Chander Kashyapa6559382012-09-06 19:36:31 +0000478 char *fdt;
Stephen Warrenc61d94d2014-01-28 14:50:10 -0700479 char *fdtdir;
Rob Herring98f64672012-12-02 21:00:29 -0600480 int ipappend;
Jason Hobbs06283a62011-08-31 10:37:30 -0500481 int attempted;
482 int localboot;
Rob Herring500f3042012-12-02 21:00:22 -0600483 int localboot_val;
Jason Hobbs06283a62011-08-31 10:37:30 -0500484 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 */
499struct 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 */
513static 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 */
535static 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
Chander Kashyapa6559382012-09-06 19:36:31 +0000549 if (label->fdt)
550 free(label->fdt);
551
Stephen Warrenc61d94d2014-01-28 14:50:10 -0700552 if (label->fdtdir)
553 free(label->fdtdir);
554
Jason Hobbs06283a62011-08-31 10:37:30 -0500555 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 */
564static void label_print(void *data)
565{
566 struct pxe_label *label = data;
Rob Herring32d2ffe2012-12-02 21:00:26 -0600567 const char *c = label->menu ? label->menu : label->name;
Jason Hobbs06283a62011-08-31 10:37:30 -0500568
Rob Herring32d2ffe2012-12-02 21:00:26 -0600569 printf("%s:\t%s\n", label->num, c);
Jason Hobbs06283a62011-08-31 10:37:30 -0500570}
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 */
581static int label_localboot(struct pxe_label *label)
582{
Simon Glassd51004a2012-03-30 21:30:55 +0000583 char *localcmd;
Jason Hobbs06283a62011-08-31 10:37:30 -0500584
585 localcmd = from_env("localcmd");
586
587 if (!localcmd)
588 return -ENOENT;
589
Hans de Goedeb1ba62d2014-08-06 09:37:39 +0200590 if (label->append) {
591 char bootargs[CONFIG_SYS_CBSIZE];
592
593 cli_simple_process_macros(label->append, bootargs);
594 setenv("bootargs", bootargs);
595 }
Jason Hobbs06283a62011-08-31 10:37:30 -0500596
Simon Glassd51004a2012-03-30 21:30:55 +0000597 debug("running: %s\n", localcmd);
Jason Hobbs06283a62011-08-31 10:37:30 -0500598
Simon Glassd51004a2012-03-30 21:30:55 +0000599 return run_command_list(localcmd, strlen(localcmd), 0);
Jason Hobbs06283a62011-08-31 10:37:30 -0500600}
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 */
Tom Rinid7884e02013-09-24 09:05:08 -0400617static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)
Jason Hobbs06283a62011-08-31 10:37:30 -0500618{
619 char *bootm_argv[] = { "bootm", NULL, NULL, NULL, NULL };
Rob Herringe6b6ccf2012-12-03 13:17:21 -0600620 char initrd_str[22];
Rob Herring98f64672012-12-02 21:00:29 -0600621 char mac_str[29] = "";
622 char ip_str[68] = "";
Jason Hobbs06283a62011-08-31 10:37:30 -0500623 int bootm_argc = 3;
Rob Herring98f64672012-12-02 21:00:29 -0600624 int len = 0;
Bryan Wu1fb7d0e2014-07-31 17:39:59 -0700625 ulong kernel_addr;
626 void *buf;
Jason Hobbs06283a62011-08-31 10:37:30 -0500627
628 label_print(label);
629
630 label->attempted = 1;
631
632 if (label->localboot) {
Rob Herring500f3042012-12-02 21:00:22 -0600633 if (label->localboot_val >= 0)
634 label_localboot(label);
635 return 0;
Jason Hobbs06283a62011-08-31 10:37:30 -0500636 }
637
638 if (label->kernel == NULL) {
639 printf("No kernel given, skipping %s\n",
640 label->name);
Rob Herring500f3042012-12-02 21:00:22 -0600641 return 1;
Jason Hobbs06283a62011-08-31 10:37:30 -0500642 }
643
644 if (label->initrd) {
Steven Falco0e3f3f82013-10-07 09:51:48 -0400645 if (get_relfile_envaddr(cmdtp, label->initrd, "ramdisk_addr_r") < 0) {
Jason Hobbs06283a62011-08-31 10:37:30 -0500646 printf("Skipping %s for failure retrieving initrd\n",
647 label->name);
Rob Herring500f3042012-12-02 21:00:22 -0600648 return 1;
Jason Hobbs06283a62011-08-31 10:37:30 -0500649 }
650
Rob Herringe6b6ccf2012-12-03 13:17:21 -0600651 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"));
Jason Hobbs06283a62011-08-31 10:37:30 -0500655 } else {
656 bootm_argv[2] = "-";
657 }
658
Steven Falco0e3f3f82013-10-07 09:51:48 -0400659 if (get_relfile_envaddr(cmdtp, label->kernel, "kernel_addr_r") < 0) {
Jason Hobbs06283a62011-08-31 10:37:30 -0500660 printf("Skipping %s for failure retrieving kernel\n",
661 label->name);
Rob Herring500f3042012-12-02 21:00:22 -0600662 return 1;
Jason Hobbs06283a62011-08-31 10:37:30 -0500663 }
664
Rob Herring98f64672012-12-02 21:00:29 -0600665 if (label->ipappend & 0x1) {
666 sprintf(ip_str, " ip=%s:%s:%s:%s",
667 getenv("ipaddr"), getenv("serverip"),
668 getenv("gatewayip"), getenv("netmask"));
Rob Herring98f64672012-12-02 21:00:29 -0600669 }
670
Stephen Warrenb81fdb02014-02-05 20:49:20 -0700671#ifdef CONFIG_CMD_NET
Rob Herring98f64672012-12-02 21:00:29 -0600672 if (label->ipappend & 0x2) {
673 int err;
674 strcpy(mac_str, " BOOTIF=");
675 err = format_mac_pxe(mac_str + 8, sizeof(mac_str) - 8);
676 if (err < 0)
677 mac_str[0] = '\0';
Rob Herring98f64672012-12-02 21:00:29 -0600678 }
Stephen Warrenb81fdb02014-02-05 20:49:20 -0700679#endif
Rob Herring98f64672012-12-02 21:00:29 -0600680
Hans de Goedeb1ba62d2014-08-06 09:37:39 +0200681 if ((label->ipappend & 0x3) || label->append) {
682 char bootargs[CONFIG_SYS_CBSIZE] = "";
683 char finalbootargs[CONFIG_SYS_CBSIZE];
Rob Herring98f64672012-12-02 21:00:29 -0600684
Ian Campbell64a0c242014-10-03 14:29:01 +0100685 if (strlen(label->append ?: "") +
686 strlen(ip_str) + strlen(mac_str) + 1 > sizeof(bootargs)) {
687 printf("bootarg overflow %zd+%zd+%zd+1 > %zd\n",
688 strlen(label->append ?: ""),
689 strlen(ip_str), strlen(mac_str),
690 sizeof(bootargs));
691 return 1;
692 }
693
Rob Herring98f64672012-12-02 21:00:29 -0600694 if (label->append)
695 strcpy(bootargs, label->append);
696 strcat(bootargs, ip_str);
697 strcat(bootargs, mac_str);
698
Hans de Goedeb1ba62d2014-08-06 09:37:39 +0200699 cli_simple_process_macros(bootargs, finalbootargs);
700 setenv("bootargs", finalbootargs);
701 printf("append: %s\n", finalbootargs);
Rob Herring32d2ffe2012-12-02 21:00:26 -0600702 }
Jason Hobbs06283a62011-08-31 10:37:30 -0500703
704 bootm_argv[1] = getenv("kernel_addr_r");
705
706 /*
Chander Kashyapa6559382012-09-06 19:36:31 +0000707 * fdt usage is optional:
708 * It handles the following scenarios. All scenarios are exclusive
709 *
710 * Scenario 1: If fdt_addr_r specified and "fdt" label is defined in
711 * pxe file, retrieve fdt blob from server. Pass fdt_addr_r to bootm,
712 * and adjust argc appropriately.
713 *
714 * Scenario 2: If there is an fdt_addr specified, pass it along to
715 * bootm, and adjust argc appropriately.
716 *
717 * Scenario 3: fdt blob is not available.
Jason Hobbs06283a62011-08-31 10:37:30 -0500718 */
Chander Kashyapa6559382012-09-06 19:36:31 +0000719 bootm_argv[3] = getenv("fdt_addr_r");
720
721 /* if fdt label is defined then get fdt from server */
Stephen Warrenc61d94d2014-01-28 14:50:10 -0700722 if (bootm_argv[3]) {
723 char *fdtfile = NULL;
724 char *fdtfilefree = NULL;
725
726 if (label->fdt) {
727 fdtfile = label->fdt;
728 } else if (label->fdtdir) {
Stephen Warrene22361a2014-02-12 14:30:04 -0700729 char *f1, *f2, *f3, *f4, *slash;
Stephen Warrenc61d94d2014-01-28 14:50:10 -0700730
Stephen Warrene22361a2014-02-12 14:30:04 -0700731 f1 = getenv("fdtfile");
732 if (f1) {
733 f2 = "";
734 f3 = "";
735 f4 = "";
736 } else {
737 /*
738 * For complex cases where this code doesn't
739 * generate the correct filename, the board
740 * code should set $fdtfile during early boot,
741 * or the boot scripts should set $fdtfile
742 * before invoking "pxe" or "sysboot".
743 */
744 f1 = getenv("soc");
745 f2 = "-";
746 f3 = getenv("board");
747 f4 = ".dtb";
Stephen Warrenc61d94d2014-01-28 14:50:10 -0700748 }
Stephen Warrene22361a2014-02-12 14:30:04 -0700749
750 len = strlen(label->fdtdir);
751 if (!len)
752 slash = "./";
753 else if (label->fdtdir[len - 1] != '/')
754 slash = "/";
755 else
756 slash = "";
757
758 len = strlen(label->fdtdir) + strlen(slash) +
759 strlen(f1) + strlen(f2) + strlen(f3) +
760 strlen(f4) + 1;
761 fdtfilefree = malloc(len);
762 if (!fdtfilefree) {
763 printf("malloc fail (FDT filename)\n");
764 return 1;
765 }
766
767 snprintf(fdtfilefree, len, "%s%s%s%s%s%s",
768 label->fdtdir, slash, f1, f2, f3, f4);
769 fdtfile = fdtfilefree;
Chander Kashyapa6559382012-09-06 19:36:31 +0000770 }
Stephen Warrenc61d94d2014-01-28 14:50:10 -0700771
772 if (fdtfile) {
773 int err = get_relfile_envaddr(cmdtp, fdtfile, "fdt_addr_r");
774 free(fdtfilefree);
775 if (err < 0) {
776 printf("Skipping %s for failure retrieving fdt\n",
777 label->name);
778 return 1;
779 }
780 } else {
781 bootm_argv[3] = NULL;
782 }
783 }
784
785 if (!bootm_argv[3])
Chander Kashyapa6559382012-09-06 19:36:31 +0000786 bootm_argv[3] = getenv("fdt_addr");
Jason Hobbs06283a62011-08-31 10:37:30 -0500787
788 if (bootm_argv[3])
789 bootm_argc = 4;
790
Bryan Wu1fb7d0e2014-07-31 17:39:59 -0700791 kernel_addr = genimg_get_kernel_addr(bootm_argv[1]);
792 buf = map_sysmem(kernel_addr, 0);
793 /* Try bootm for legacy and FIT format image */
794 if (genimg_get_format(buf) != IMAGE_FORMAT_INVALID)
795 do_bootm(cmdtp, 0, bootm_argc, bootm_argv);
Rob Herringe6b6ccf2012-12-03 13:17:21 -0600796#ifdef CONFIG_CMD_BOOTZ
Bryan Wu1fb7d0e2014-07-31 17:39:59 -0700797 /* Try booting a zImage */
798 else
799 do_bootz(cmdtp, 0, bootm_argc, bootm_argv);
Rob Herringe6b6ccf2012-12-03 13:17:21 -0600800#endif
Sjoerd Simons4a0bd102015-04-13 22:54:25 +0200801 unmap_sysmem(buf);
Rob Herring500f3042012-12-02 21:00:22 -0600802 return 1;
Jason Hobbs06283a62011-08-31 10:37:30 -0500803}
804
805/*
806 * Tokens for the pxe file parser.
807 */
808enum token_type {
809 T_EOL,
810 T_STRING,
811 T_EOF,
812 T_MENU,
813 T_TITLE,
814 T_TIMEOUT,
815 T_LABEL,
816 T_KERNEL,
Rob Herringbeb9f6c2012-03-28 05:51:35 +0000817 T_LINUX,
Jason Hobbs06283a62011-08-31 10:37:30 -0500818 T_APPEND,
819 T_INITRD,
820 T_LOCALBOOT,
821 T_DEFAULT,
822 T_PROMPT,
823 T_INCLUDE,
Chander Kashyapa6559382012-09-06 19:36:31 +0000824 T_FDT,
Stephen Warrenc61d94d2014-01-28 14:50:10 -0700825 T_FDTDIR,
Rob Herring8577fec2012-12-02 21:00:27 -0600826 T_ONTIMEOUT,
Rob Herring98f64672012-12-02 21:00:29 -0600827 T_IPAPPEND,
Jason Hobbs06283a62011-08-31 10:37:30 -0500828 T_INVALID
829};
830
831/*
832 * A token - given by a value and a type.
833 */
834struct token {
835 char *val;
836 enum token_type type;
837};
838
839/*
840 * Keywords recognized.
841 */
842static const struct token keywords[] = {
843 {"menu", T_MENU},
844 {"title", T_TITLE},
845 {"timeout", T_TIMEOUT},
846 {"default", T_DEFAULT},
847 {"prompt", T_PROMPT},
848 {"label", T_LABEL},
849 {"kernel", T_KERNEL},
Rob Herringbeb9f6c2012-03-28 05:51:35 +0000850 {"linux", T_LINUX},
Jason Hobbs06283a62011-08-31 10:37:30 -0500851 {"localboot", T_LOCALBOOT},
852 {"append", T_APPEND},
853 {"initrd", T_INITRD},
854 {"include", T_INCLUDE},
Stephen Warrenf43c4012014-01-28 14:50:09 -0700855 {"devicetree", T_FDT},
Chander Kashyapa6559382012-09-06 19:36:31 +0000856 {"fdt", T_FDT},
Stephen Warrenc61d94d2014-01-28 14:50:10 -0700857 {"devicetreedir", T_FDTDIR},
858 {"fdtdir", T_FDTDIR},
Rob Herring8577fec2012-12-02 21:00:27 -0600859 {"ontimeout", T_ONTIMEOUT,},
Rob Herring98f64672012-12-02 21:00:29 -0600860 {"ipappend", T_IPAPPEND,},
Jason Hobbs06283a62011-08-31 10:37:30 -0500861 {NULL, T_INVALID}
862};
863
864/*
865 * Since pxe(linux) files don't have a token to identify the start of a
866 * literal, we have to keep track of when we're in a state where a literal is
867 * expected vs when we're in a state a keyword is expected.
868 */
869enum lex_state {
870 L_NORMAL = 0,
871 L_KEYWORD,
872 L_SLITERAL
873};
874
875/*
876 * get_string retrieves a string from *p and stores it as a token in
877 * *t.
878 *
879 * get_string used for scanning both string literals and keywords.
880 *
881 * Characters from *p are copied into t-val until a character equal to
882 * delim is found, or a NUL byte is reached. If delim has the special value of
883 * ' ', any whitespace character will be used as a delimiter.
884 *
885 * If lower is unequal to 0, uppercase characters will be converted to
886 * lowercase in the result. This is useful to make keywords case
887 * insensitive.
888 *
889 * The location of *p is updated to point to the first character after the end
890 * of the token - the ending delimiter.
891 *
892 * On success, the new value of t->val is returned. Memory for t->val is
893 * allocated using malloc and must be free()'d to reclaim it. If insufficient
894 * memory is available, NULL is returned.
895 */
896static char *get_string(char **p, struct token *t, char delim, int lower)
897{
898 char *b, *e;
899 size_t len, i;
900
901 /*
902 * b and e both start at the beginning of the input stream.
903 *
904 * e is incremented until we find the ending delimiter, or a NUL byte
905 * is reached. Then, we take e - b to find the length of the token.
906 */
907 b = e = *p;
908
909 while (*e) {
910 if ((delim == ' ' && isspace(*e)) || delim == *e)
911 break;
912 e++;
913 }
914
915 len = e - b;
916
917 /*
918 * Allocate memory to hold the string, and copy it in, converting
919 * characters to lowercase if lower is != 0.
920 */
921 t->val = malloc(len + 1);
922 if (!t->val)
923 return NULL;
924
925 for (i = 0; i < len; i++, b++) {
926 if (lower)
927 t->val[i] = tolower(*b);
928 else
929 t->val[i] = *b;
930 }
931
932 t->val[len] = '\0';
933
934 /*
935 * Update *p so the caller knows where to continue scanning.
936 */
937 *p = e;
938
939 t->type = T_STRING;
940
941 return t->val;
942}
943
944/*
945 * Populate a keyword token with a type and value.
946 */
947static void get_keyword(struct token *t)
948{
949 int i;
950
951 for (i = 0; keywords[i].val; i++) {
952 if (!strcmp(t->val, keywords[i].val)) {
953 t->type = keywords[i].type;
954 break;
955 }
956 }
957}
958
959/*
960 * Get the next token. We have to keep track of which state we're in to know
961 * if we're looking to get a string literal or a keyword.
962 *
963 * *p is updated to point at the first character after the current token.
964 */
965static void get_token(char **p, struct token *t, enum lex_state state)
966{
967 char *c = *p;
968
969 t->type = T_INVALID;
970
971 /* eat non EOL whitespace */
972 while (isblank(*c))
973 c++;
974
975 /*
976 * eat comments. note that string literals can't begin with #, but
977 * can contain a # after their first character.
978 */
979 if (*c == '#') {
980 while (*c && *c != '\n')
981 c++;
982 }
983
984 if (*c == '\n') {
985 t->type = T_EOL;
986 c++;
987 } else if (*c == '\0') {
988 t->type = T_EOF;
989 c++;
990 } else if (state == L_SLITERAL) {
991 get_string(&c, t, '\n', 0);
992 } else if (state == L_KEYWORD) {
993 /*
994 * when we expect a keyword, we first get the next string
995 * token delimited by whitespace, and then check if it
996 * matches a keyword in our keyword list. if it does, it's
997 * converted to a keyword token of the appropriate type, and
998 * if not, it remains a string token.
999 */
1000 get_string(&c, t, ' ', 1);
1001 get_keyword(t);
1002 }
1003
1004 *p = c;
1005}
1006
1007/*
1008 * Increment *c until we get to the end of the current line, or EOF.
1009 */
1010static void eol_or_eof(char **c)
1011{
1012 while (**c && **c != '\n')
1013 (*c)++;
1014}
1015
1016/*
1017 * All of these parse_* functions share some common behavior.
1018 *
1019 * They finish with *c pointing after the token they parse, and return 1 on
1020 * success, or < 0 on error.
1021 */
1022
1023/*
1024 * Parse a string literal and store a pointer it at *dst. String literals
1025 * terminate at the end of the line.
1026 */
1027static int parse_sliteral(char **c, char **dst)
1028{
1029 struct token t;
1030 char *s = *c;
1031
1032 get_token(c, &t, L_SLITERAL);
1033
1034 if (t.type != T_STRING) {
1035 printf("Expected string literal: %.*s\n", (int)(*c - s), s);
1036 return -EINVAL;
1037 }
1038
1039 *dst = t.val;
1040
1041 return 1;
1042}
1043
1044/*
1045 * Parse a base 10 (unsigned) integer and store it at *dst.
1046 */
1047static int parse_integer(char **c, int *dst)
1048{
1049 struct token t;
1050 char *s = *c;
Jason Hobbs06283a62011-08-31 10:37:30 -05001051
1052 get_token(c, &t, L_SLITERAL);
1053
1054 if (t.type != T_STRING) {
1055 printf("Expected string: %.*s\n", (int)(*c - s), s);
1056 return -EINVAL;
1057 }
1058
Rob Herring500f3042012-12-02 21:00:22 -06001059 *dst = simple_strtol(t.val, NULL, 10);
Jason Hobbs06283a62011-08-31 10:37:30 -05001060
1061 free(t.val);
1062
1063 return 1;
1064}
1065
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001066static int parse_pxefile_top(cmd_tbl_t *cmdtp, char *p, unsigned long base,
1067 struct pxe_menu *cfg, int nest_level);
Jason Hobbs06283a62011-08-31 10:37:30 -05001068
1069/*
1070 * Parse an include statement, and retrieve and parse the file it mentions.
1071 *
1072 * base should point to a location where it's safe to store the file, and
1073 * nest_level should indicate how many nested includes have occurred. For this
1074 * include, nest_level has already been incremented and doesn't need to be
1075 * incremented here.
1076 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001077static int handle_include(cmd_tbl_t *cmdtp, char **c, unsigned long base,
Jason Hobbs06283a62011-08-31 10:37:30 -05001078 struct pxe_menu *cfg, int nest_level)
1079{
1080 char *include_path;
1081 char *s = *c;
1082 int err;
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001083 char *buf;
1084 int ret;
Jason Hobbs06283a62011-08-31 10:37:30 -05001085
1086 err = parse_sliteral(c, &include_path);
1087
1088 if (err < 0) {
1089 printf("Expected include path: %.*s\n",
1090 (int)(*c - s), s);
1091 return err;
1092 }
1093
Steven Falco0e3f3f82013-10-07 09:51:48 -04001094 err = get_pxe_file(cmdtp, include_path, base);
Jason Hobbs06283a62011-08-31 10:37:30 -05001095
1096 if (err < 0) {
1097 printf("Couldn't retrieve %s\n", include_path);
1098 return err;
1099 }
1100
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001101 buf = map_sysmem(base, 0);
1102 ret = parse_pxefile_top(cmdtp, buf, base, cfg, nest_level);
1103 unmap_sysmem(buf);
1104
1105 return ret;
Jason Hobbs06283a62011-08-31 10:37:30 -05001106}
1107
1108/*
1109 * Parse lines that begin with 'menu'.
1110 *
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001111 * base and nest are provided to handle the 'menu include' case.
Jason Hobbs06283a62011-08-31 10:37:30 -05001112 *
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001113 * base should point to a location where it's safe to store the included file.
Jason Hobbs06283a62011-08-31 10:37:30 -05001114 *
1115 * nest_level should be 1 when parsing the top level pxe file, 2 when parsing
1116 * a file it includes, 3 when parsing a file included by that file, and so on.
1117 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001118static int parse_menu(cmd_tbl_t *cmdtp, char **c, struct pxe_menu *cfg,
1119 unsigned long base, int nest_level)
Jason Hobbs06283a62011-08-31 10:37:30 -05001120{
1121 struct token t;
1122 char *s = *c;
Heiko Schocher43d4a5e2011-12-12 20:37:17 +00001123 int err = 0;
Jason Hobbs06283a62011-08-31 10:37:30 -05001124
1125 get_token(c, &t, L_KEYWORD);
1126
1127 switch (t.type) {
1128 case T_TITLE:
1129 err = parse_sliteral(c, &cfg->title);
1130
1131 break;
1132
1133 case T_INCLUDE:
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001134 err = handle_include(cmdtp, c, base, cfg,
Jason Hobbs06283a62011-08-31 10:37:30 -05001135 nest_level + 1);
1136 break;
1137
1138 default:
1139 printf("Ignoring malformed menu command: %.*s\n",
1140 (int)(*c - s), s);
1141 }
1142
1143 if (err < 0)
1144 return err;
1145
1146 eol_or_eof(c);
1147
1148 return 1;
1149}
1150
1151/*
1152 * Handles parsing a 'menu line' when we're parsing a label.
1153 */
1154static int parse_label_menu(char **c, struct pxe_menu *cfg,
1155 struct pxe_label *label)
1156{
1157 struct token t;
1158 char *s;
1159
1160 s = *c;
1161
1162 get_token(c, &t, L_KEYWORD);
1163
1164 switch (t.type) {
1165 case T_DEFAULT:
Rob Herring8577fec2012-12-02 21:00:27 -06001166 if (!cfg->default_label)
1167 cfg->default_label = strdup(label->name);
Jason Hobbs06283a62011-08-31 10:37:30 -05001168
1169 if (!cfg->default_label)
1170 return -ENOMEM;
1171
1172 break;
Rob Herring7815c4e2012-03-28 05:51:34 +00001173 case T_LABEL:
1174 parse_sliteral(c, &label->menu);
1175 break;
Jason Hobbs06283a62011-08-31 10:37:30 -05001176 default:
1177 printf("Ignoring malformed menu command: %.*s\n",
1178 (int)(*c - s), s);
1179 }
1180
1181 eol_or_eof(c);
1182
1183 return 0;
1184}
1185
1186/*
1187 * Parses a label and adds it to the list of labels for a menu.
1188 *
1189 * A label ends when we either get to the end of a file, or
1190 * get some input we otherwise don't have a handler defined
1191 * for.
1192 *
1193 */
1194static int parse_label(char **c, struct pxe_menu *cfg)
1195{
1196 struct token t;
Rob Herring34bd23e2012-03-28 05:51:37 +00001197 int len;
Jason Hobbs06283a62011-08-31 10:37:30 -05001198 char *s = *c;
1199 struct pxe_label *label;
1200 int err;
1201
1202 label = label_create();
1203 if (!label)
1204 return -ENOMEM;
1205
1206 err = parse_sliteral(c, &label->name);
1207 if (err < 0) {
1208 printf("Expected label name: %.*s\n", (int)(*c - s), s);
1209 label_destroy(label);
1210 return -EINVAL;
1211 }
1212
1213 list_add_tail(&label->list, &cfg->labels);
1214
1215 while (1) {
1216 s = *c;
1217 get_token(c, &t, L_KEYWORD);
1218
1219 err = 0;
1220 switch (t.type) {
1221 case T_MENU:
1222 err = parse_label_menu(c, cfg, label);
1223 break;
1224
1225 case T_KERNEL:
Rob Herringbeb9f6c2012-03-28 05:51:35 +00001226 case T_LINUX:
Jason Hobbs06283a62011-08-31 10:37:30 -05001227 err = parse_sliteral(c, &label->kernel);
1228 break;
1229
1230 case T_APPEND:
1231 err = parse_sliteral(c, &label->append);
Rob Herring34bd23e2012-03-28 05:51:37 +00001232 if (label->initrd)
1233 break;
1234 s = strstr(label->append, "initrd=");
1235 if (!s)
1236 break;
1237 s += 7;
1238 len = (int)(strchr(s, ' ') - s);
1239 label->initrd = malloc(len + 1);
1240 strncpy(label->initrd, s, len);
1241 label->initrd[len] = '\0';
1242
Jason Hobbs06283a62011-08-31 10:37:30 -05001243 break;
1244
1245 case T_INITRD:
Rob Herring34bd23e2012-03-28 05:51:37 +00001246 if (!label->initrd)
1247 err = parse_sliteral(c, &label->initrd);
Jason Hobbs06283a62011-08-31 10:37:30 -05001248 break;
1249
Chander Kashyapa6559382012-09-06 19:36:31 +00001250 case T_FDT:
1251 if (!label->fdt)
1252 err = parse_sliteral(c, &label->fdt);
1253 break;
1254
Stephen Warrenc61d94d2014-01-28 14:50:10 -07001255 case T_FDTDIR:
1256 if (!label->fdtdir)
1257 err = parse_sliteral(c, &label->fdtdir);
1258 break;
1259
Jason Hobbs06283a62011-08-31 10:37:30 -05001260 case T_LOCALBOOT:
Rob Herring500f3042012-12-02 21:00:22 -06001261 label->localboot = 1;
1262 err = parse_integer(c, &label->localboot_val);
Jason Hobbs06283a62011-08-31 10:37:30 -05001263 break;
1264
Rob Herring98f64672012-12-02 21:00:29 -06001265 case T_IPAPPEND:
1266 err = parse_integer(c, &label->ipappend);
1267 break;
1268
Jason Hobbs06283a62011-08-31 10:37:30 -05001269 case T_EOL:
1270 break;
1271
1272 default:
1273 /*
1274 * put the token back! we don't want it - it's the end
1275 * of a label and whatever token this is, it's
1276 * something for the menu level context to handle.
1277 */
1278 *c = s;
1279 return 1;
1280 }
1281
1282 if (err < 0)
1283 return err;
1284 }
1285}
1286
1287/*
1288 * This 16 comes from the limit pxelinux imposes on nested includes.
1289 *
1290 * There is no reason at all we couldn't do more, but some limit helps prevent
1291 * infinite (until crash occurs) recursion if a file tries to include itself.
1292 */
1293#define MAX_NEST_LEVEL 16
1294
1295/*
1296 * Entry point for parsing a menu file. nest_level indicates how many times
1297 * we've nested in includes. It will be 1 for the top level menu file.
1298 *
1299 * Returns 1 on success, < 0 on error.
1300 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001301static int parse_pxefile_top(cmd_tbl_t *cmdtp, char *p, unsigned long base,
1302 struct pxe_menu *cfg, int nest_level)
Jason Hobbs06283a62011-08-31 10:37:30 -05001303{
1304 struct token t;
1305 char *s, *b, *label_name;
1306 int err;
1307
1308 b = p;
1309
1310 if (nest_level > MAX_NEST_LEVEL) {
1311 printf("Maximum nesting (%d) exceeded\n", MAX_NEST_LEVEL);
1312 return -EMLINK;
1313 }
1314
1315 while (1) {
1316 s = p;
1317
1318 get_token(&p, &t, L_KEYWORD);
1319
1320 err = 0;
1321 switch (t.type) {
1322 case T_MENU:
Rob Herringe82eeb52012-12-02 21:00:25 -06001323 cfg->prompt = 1;
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001324 err = parse_menu(cmdtp, &p, cfg,
1325 base + ALIGN(strlen(b) + 1, 4),
1326 nest_level);
Jason Hobbs06283a62011-08-31 10:37:30 -05001327 break;
1328
1329 case T_TIMEOUT:
1330 err = parse_integer(&p, &cfg->timeout);
1331 break;
1332
1333 case T_LABEL:
1334 err = parse_label(&p, cfg);
1335 break;
1336
1337 case T_DEFAULT:
Rob Herring8577fec2012-12-02 21:00:27 -06001338 case T_ONTIMEOUT:
Jason Hobbs06283a62011-08-31 10:37:30 -05001339 err = parse_sliteral(&p, &label_name);
1340
1341 if (label_name) {
1342 if (cfg->default_label)
1343 free(cfg->default_label);
1344
1345 cfg->default_label = label_name;
1346 }
1347
1348 break;
1349
Rob Herring1e085222012-05-25 10:43:16 +00001350 case T_INCLUDE:
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001351 err = handle_include(cmdtp, &p,
1352 base + ALIGN(strlen(b), 4), cfg,
1353 nest_level + 1);
Rob Herring1e085222012-05-25 10:43:16 +00001354 break;
1355
Jason Hobbs06283a62011-08-31 10:37:30 -05001356 case T_PROMPT:
Rob Herringe82eeb52012-12-02 21:00:25 -06001357 eol_or_eof(&p);
Jason Hobbs06283a62011-08-31 10:37:30 -05001358 break;
1359
1360 case T_EOL:
1361 break;
1362
1363 case T_EOF:
1364 return 1;
1365
1366 default:
1367 printf("Ignoring unknown command: %.*s\n",
1368 (int)(p - s), s);
1369 eol_or_eof(&p);
1370 }
1371
1372 if (err < 0)
1373 return err;
1374 }
1375}
1376
1377/*
1378 * Free the memory used by a pxe_menu and its labels.
1379 */
1380static void destroy_pxe_menu(struct pxe_menu *cfg)
1381{
1382 struct list_head *pos, *n;
1383 struct pxe_label *label;
1384
1385 if (cfg->title)
1386 free(cfg->title);
1387
1388 if (cfg->default_label)
1389 free(cfg->default_label);
1390
1391 list_for_each_safe(pos, n, &cfg->labels) {
1392 label = list_entry(pos, struct pxe_label, list);
1393
1394 label_destroy(label);
1395 }
1396
1397 free(cfg);
1398}
1399
1400/*
1401 * Entry point for parsing a pxe file. This is only used for the top level
1402 * file.
1403 *
1404 * Returns NULL if there is an error, otherwise, returns a pointer to a
1405 * pxe_menu struct populated with the results of parsing the pxe file (and any
1406 * files it includes). The resulting pxe_menu struct can be free()'d by using
1407 * the destroy_pxe_menu() function.
1408 */
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001409static struct pxe_menu *parse_pxefile(cmd_tbl_t *cmdtp, unsigned long menucfg)
Jason Hobbs06283a62011-08-31 10:37:30 -05001410{
1411 struct pxe_menu *cfg;
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001412 char *buf;
1413 int r;
Jason Hobbs06283a62011-08-31 10:37:30 -05001414
1415 cfg = malloc(sizeof(struct pxe_menu));
1416
1417 if (!cfg)
1418 return NULL;
1419
1420 memset(cfg, 0, sizeof(struct pxe_menu));
1421
1422 INIT_LIST_HEAD(&cfg->labels);
1423
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001424 buf = map_sysmem(menucfg, 0);
1425 r = parse_pxefile_top(cmdtp, buf, menucfg, cfg, 1);
1426 unmap_sysmem(buf);
1427
1428 if (r < 0) {
Jason Hobbs06283a62011-08-31 10:37:30 -05001429 destroy_pxe_menu(cfg);
1430 return NULL;
1431 }
1432
1433 return cfg;
1434}
1435
1436/*
1437 * Converts a pxe_menu struct into a menu struct for use with U-boot's generic
1438 * menu code.
1439 */
1440static struct menu *pxe_menu_to_menu(struct pxe_menu *cfg)
1441{
1442 struct pxe_label *label;
1443 struct list_head *pos;
1444 struct menu *m;
1445 int err;
Rob Herring32d2ffe2012-12-02 21:00:26 -06001446 int i = 1;
1447 char *default_num = NULL;
Jason Hobbs06283a62011-08-31 10:37:30 -05001448
1449 /*
1450 * Create a menu and add items for all the labels.
1451 */
Pali Rohárfc9d64f2013-03-23 14:50:40 +00001452 m = menu_create(cfg->title, cfg->timeout, cfg->prompt, label_print,
1453 NULL, NULL);
Jason Hobbs06283a62011-08-31 10:37:30 -05001454
1455 if (!m)
1456 return NULL;
1457
1458 list_for_each(pos, &cfg->labels) {
1459 label = list_entry(pos, struct pxe_label, list);
1460
Rob Herring32d2ffe2012-12-02 21:00:26 -06001461 sprintf(label->num, "%d", i++);
1462 if (menu_item_add(m, label->num, label) != 1) {
Jason Hobbs06283a62011-08-31 10:37:30 -05001463 menu_destroy(m);
1464 return NULL;
1465 }
Rob Herring32d2ffe2012-12-02 21:00:26 -06001466 if (cfg->default_label &&
Rob Herring8577fec2012-12-02 21:00:27 -06001467 (strcmp(label->name, cfg->default_label) == 0))
Rob Herring32d2ffe2012-12-02 21:00:26 -06001468 default_num = label->num;
1469
Jason Hobbs06283a62011-08-31 10:37:30 -05001470 }
1471
1472 /*
1473 * After we've created items for each label in the menu, set the
1474 * menu's default label if one was specified.
1475 */
Rob Herring32d2ffe2012-12-02 21:00:26 -06001476 if (default_num) {
1477 err = menu_default_set(m, default_num);
Jason Hobbs06283a62011-08-31 10:37:30 -05001478 if (err != 1) {
1479 if (err != -ENOENT) {
1480 menu_destroy(m);
1481 return NULL;
1482 }
1483
1484 printf("Missing default: %s\n", cfg->default_label);
1485 }
1486 }
1487
1488 return m;
1489}
1490
1491/*
1492 * Try to boot any labels we have yet to attempt to boot.
1493 */
Tom Rinid7884e02013-09-24 09:05:08 -04001494static void boot_unattempted_labels(cmd_tbl_t *cmdtp, struct pxe_menu *cfg)
Jason Hobbs06283a62011-08-31 10:37:30 -05001495{
1496 struct list_head *pos;
1497 struct pxe_label *label;
1498
1499 list_for_each(pos, &cfg->labels) {
1500 label = list_entry(pos, struct pxe_label, list);
1501
1502 if (!label->attempted)
Tom Rinid7884e02013-09-24 09:05:08 -04001503 label_boot(cmdtp, label);
Jason Hobbs06283a62011-08-31 10:37:30 -05001504 }
1505}
1506
1507/*
1508 * Boot the system as prescribed by a pxe_menu.
1509 *
1510 * Use the menu system to either get the user's choice or the default, based
1511 * on config or user input. If there is no default or user's choice,
1512 * attempted to boot labels in the order they were given in pxe files.
1513 * If the default or user's choice fails to boot, attempt to boot other
1514 * labels in the order they were given in pxe files.
1515 *
1516 * If this function returns, there weren't any labels that successfully
1517 * booted, or the user interrupted the menu selection via ctrl+c.
1518 */
Tom Rinid7884e02013-09-24 09:05:08 -04001519static void handle_pxe_menu(cmd_tbl_t *cmdtp, struct pxe_menu *cfg)
Jason Hobbs06283a62011-08-31 10:37:30 -05001520{
1521 void *choice;
1522 struct menu *m;
1523 int err;
1524
1525 m = pxe_menu_to_menu(cfg);
1526 if (!m)
1527 return;
1528
1529 err = menu_get_choice(m, &choice);
1530
1531 menu_destroy(m);
1532
Jason Hobbs6f40f272011-11-07 03:07:15 +00001533 /*
1534 * err == 1 means we got a choice back from menu_get_choice.
1535 *
1536 * err == -ENOENT if the menu was setup to select the default but no
1537 * default was set. in that case, we should continue trying to boot
1538 * labels that haven't been attempted yet.
1539 *
1540 * otherwise, the user interrupted or there was some other error and
1541 * we give up.
1542 */
Jason Hobbs06283a62011-08-31 10:37:30 -05001543
Rob Herring500f3042012-12-02 21:00:22 -06001544 if (err == 1) {
Tom Rinid7884e02013-09-24 09:05:08 -04001545 err = label_boot(cmdtp, choice);
Rob Herring500f3042012-12-02 21:00:22 -06001546 if (!err)
1547 return;
1548 } else if (err != -ENOENT) {
Jason Hobbs6f40f272011-11-07 03:07:15 +00001549 return;
Rob Herring500f3042012-12-02 21:00:22 -06001550 }
Jason Hobbs06283a62011-08-31 10:37:30 -05001551
Tom Rinid7884e02013-09-24 09:05:08 -04001552 boot_unattempted_labels(cmdtp, cfg);
Jason Hobbs06283a62011-08-31 10:37:30 -05001553}
1554
Stephen Warrenb81fdb02014-02-05 20:49:20 -07001555#ifdef CONFIG_CMD_NET
Jason Hobbs06283a62011-08-31 10:37:30 -05001556/*
1557 * Boots a system using a pxe file
1558 *
1559 * Returns 0 on success, 1 on error.
1560 */
1561static int
1562do_pxe_boot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1563{
1564 unsigned long pxefile_addr_r;
1565 struct pxe_menu *cfg;
1566 char *pxefile_addr_str;
1567
Rob Herring669df7e2012-05-25 10:47:39 +00001568 do_getfile = do_get_tftp;
1569
Jason Hobbs06283a62011-08-31 10:37:30 -05001570 if (argc == 1) {
1571 pxefile_addr_str = from_env("pxefile_addr_r");
1572 if (!pxefile_addr_str)
1573 return 1;
1574
1575 } else if (argc == 2) {
1576 pxefile_addr_str = argv[1];
1577 } else {
Simon Glass4c12eeb2011-12-10 08:44:01 +00001578 return CMD_RET_USAGE;
Jason Hobbs06283a62011-08-31 10:37:30 -05001579 }
1580
1581 if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
1582 printf("Invalid pxefile address: %s\n", pxefile_addr_str);
1583 return 1;
1584 }
1585
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001586 cfg = parse_pxefile(cmdtp, pxefile_addr_r);
Jason Hobbs06283a62011-08-31 10:37:30 -05001587
1588 if (cfg == NULL) {
1589 printf("Error parsing config file\n");
1590 return 1;
1591 }
1592
Tom Rinid7884e02013-09-24 09:05:08 -04001593 handle_pxe_menu(cmdtp, cfg);
Jason Hobbs06283a62011-08-31 10:37:30 -05001594
1595 destroy_pxe_menu(cfg);
1596
Joe Hershberger14111572015-04-08 01:41:02 -05001597 copy_filename(net_boot_file_name, "", sizeof(net_boot_file_name));
Stephen Warrended2e202014-07-22 18:06:46 -06001598
Jason Hobbs06283a62011-08-31 10:37:30 -05001599 return 0;
1600}
1601
1602static cmd_tbl_t cmd_pxe_sub[] = {
1603 U_BOOT_CMD_MKENT(get, 1, 1, do_pxe_get, "", ""),
1604 U_BOOT_CMD_MKENT(boot, 2, 1, do_pxe_boot, "", "")
1605};
1606
Jeroen Hofstee0e350f82014-06-23 00:22:08 +02001607static int do_pxe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Jason Hobbs06283a62011-08-31 10:37:30 -05001608{
1609 cmd_tbl_t *cp;
1610
1611 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +00001612 return CMD_RET_USAGE;
Jason Hobbs06283a62011-08-31 10:37:30 -05001613
Rob Herringe5a9a402013-10-18 13:04:42 -05001614 is_pxe = true;
1615
Jason Hobbs06283a62011-08-31 10:37:30 -05001616 /* drop initial "pxe" arg */
1617 argc--;
1618 argv++;
1619
1620 cp = find_cmd_tbl(argv[0], cmd_pxe_sub, ARRAY_SIZE(cmd_pxe_sub));
1621
1622 if (cp)
1623 return cp->cmd(cmdtp, flag, argc, argv);
1624
Simon Glass4c12eeb2011-12-10 08:44:01 +00001625 return CMD_RET_USAGE;
Jason Hobbs06283a62011-08-31 10:37:30 -05001626}
1627
1628U_BOOT_CMD(
1629 pxe, 3, 1, do_pxe,
1630 "commands to get and boot from pxe files",
1631 "get - try to retrieve a pxe file using tftp\npxe "
1632 "boot [pxefile_addr_r] - boot from the pxe file at pxefile_addr_r\n"
1633);
Stephen Warrenb81fdb02014-02-05 20:49:20 -07001634#endif
Rob Herring669df7e2012-05-25 10:47:39 +00001635
1636/*
1637 * Boots a system using a local disk syslinux/extlinux file
1638 *
1639 * Returns 0 on success, 1 on error.
1640 */
Jeroen Hofstee0e350f82014-06-23 00:22:08 +02001641static int do_sysboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Rob Herring669df7e2012-05-25 10:47:39 +00001642{
1643 unsigned long pxefile_addr_r;
1644 struct pxe_menu *cfg;
1645 char *pxefile_addr_str;
1646 char *filename;
1647 int prompt = 0;
1648
Rob Herringe5a9a402013-10-18 13:04:42 -05001649 is_pxe = false;
1650
Rob Herring669df7e2012-05-25 10:47:39 +00001651 if (strstr(argv[1], "-p")) {
1652 prompt = 1;
1653 argc--;
1654 argv++;
1655 }
1656
1657 if (argc < 4)
1658 return cmd_usage(cmdtp);
1659
1660 if (argc < 5) {
1661 pxefile_addr_str = from_env("pxefile_addr_r");
1662 if (!pxefile_addr_str)
1663 return 1;
1664 } else {
1665 pxefile_addr_str = argv[4];
1666 }
1667
1668 if (argc < 6)
1669 filename = getenv("bootfile");
1670 else {
1671 filename = argv[5];
1672 setenv("bootfile", filename);
1673 }
1674
1675 if (strstr(argv[3], "ext2"))
1676 do_getfile = do_get_ext2;
1677 else if (strstr(argv[3], "fat"))
1678 do_getfile = do_get_fat;
Dennis Gilmore6d1a3e52014-02-04 05:25:46 -06001679 else if (strstr(argv[3], "any"))
1680 do_getfile = do_get_any;
Rob Herring669df7e2012-05-25 10:47:39 +00001681 else {
1682 printf("Invalid filesystem: %s\n", argv[3]);
1683 return 1;
1684 }
1685 fs_argv[1] = argv[1];
1686 fs_argv[2] = argv[2];
1687
1688 if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
1689 printf("Invalid pxefile address: %s\n", pxefile_addr_str);
1690 return 1;
1691 }
1692
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001693 if (get_pxe_file(cmdtp, filename, pxefile_addr_r) < 0) {
Rob Herring669df7e2012-05-25 10:47:39 +00001694 printf("Error reading config file\n");
1695 return 1;
1696 }
1697
Sjoerd Simons4a0bd102015-04-13 22:54:25 +02001698 cfg = parse_pxefile(cmdtp, pxefile_addr_r);
Rob Herring669df7e2012-05-25 10:47:39 +00001699
1700 if (cfg == NULL) {
1701 printf("Error parsing config file\n");
1702 return 1;
1703 }
1704
1705 if (prompt)
1706 cfg->prompt = 1;
1707
Tom Rinid7884e02013-09-24 09:05:08 -04001708 handle_pxe_menu(cmdtp, cfg);
Rob Herring669df7e2012-05-25 10:47:39 +00001709
1710 destroy_pxe_menu(cfg);
1711
1712 return 0;
1713}
1714
1715U_BOOT_CMD(
1716 sysboot, 7, 1, do_sysboot,
1717 "command to get and boot from syslinux files",
Dennis Gilmore6d1a3e52014-02-04 05:25:46 -06001718 "[-p] <interface> <dev[:part]> <ext2|fat|any> [addr] [filename]\n"
1719 " - load and parse syslinux menu file 'filename' from ext2, fat\n"
1720 " or any filesystem on 'dev' on 'interface' to address 'addr'"
Rob Herring669df7e2012-05-25 10:47:39 +00001721);