]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - cmd/pxe_utils.c
1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2010-2011 Calxeda, Inc.
4 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
14 #include <linux/string.h>
15 #include <linux/ctype.h>
17 #include <linux/list.h>
25 #include "pxe_utils.h"
27 #define MAX_TFTP_PATH_LEN 512
32 * Convert an ethaddr from the environment to the format used by pxelinux
33 * filenames based on mac addresses. Convert's ':' to '-', and adds "01-" to
34 * the beginning of the ethernet address to indicate a hardware type of
35 * Ethernet. Also converts uppercase hex characters into lowercase, to match
36 * pxelinux's behavior.
38 * Returns 1 for success, -ENOENT if 'ethaddr' is undefined in the
39 * environment, or some other value < 0 on error.
41 int format_mac_pxe(char *outbuf
, size_t outbuf_len
)
45 if (outbuf_len
< 21) {
46 printf("outbuf is too small (%zd < 21)\n", outbuf_len
);
51 if (!eth_env_get_enetaddr_by_index("eth", eth_get_dev_index(), ethaddr
))
54 sprintf(outbuf
, "01-%02x-%02x-%02x-%02x-%02x-%02x",
55 ethaddr
[0], ethaddr
[1], ethaddr
[2],
56 ethaddr
[3], ethaddr
[4], ethaddr
[5]);
62 * Returns the directory the file specified in the bootfile env variable is
63 * in. If bootfile isn't defined in the environment, return NULL, which should
64 * be interpreted as "don't prepend anything to paths".
66 static int get_bootfile_path(const char *file_path
, char *bootfile_path
,
67 size_t bootfile_path_size
)
69 char *bootfile
, *last_slash
;
72 /* Only syslinux allows absolute paths */
73 if (file_path
[0] == '/' && !is_pxe
)
76 bootfile
= from_env("bootfile");
81 last_slash
= strrchr(bootfile
, '/');
86 path_len
= (last_slash
- bootfile
) + 1;
88 if (bootfile_path_size
< path_len
) {
89 printf("bootfile_path too small. (%zd < %zd)\n",
90 bootfile_path_size
, path_len
);
95 strncpy(bootfile_path
, bootfile
, path_len
);
98 bootfile_path
[path_len
] = '\0';
103 int (*do_getfile
)(cmd_tbl_t
*cmdtp
, const char *file_path
, char *file_addr
);
106 * As in pxelinux, paths to files referenced from files we retrieve are
107 * relative to the location of bootfile. get_relfile takes such a path and
108 * joins it with the bootfile path to get the full path to the target file. If
109 * the bootfile path is NULL, we use file_path as is.
111 * Returns 1 for success, or < 0 on error.
113 static int get_relfile(cmd_tbl_t
*cmdtp
, const char *file_path
,
114 unsigned long file_addr
)
117 char relfile
[MAX_TFTP_PATH_LEN
+ 1];
121 err
= get_bootfile_path(file_path
, relfile
, sizeof(relfile
));
126 path_len
= strlen(file_path
);
127 path_len
+= strlen(relfile
);
129 if (path_len
> MAX_TFTP_PATH_LEN
) {
130 printf("Base path too long (%s%s)\n", relfile
, file_path
);
132 return -ENAMETOOLONG
;
135 strcat(relfile
, file_path
);
137 printf("Retrieving file: %s\n", relfile
);
139 sprintf(addr_buf
, "%lx", file_addr
);
141 return do_getfile(cmdtp
, relfile
, addr_buf
);
145 * Retrieve the file at 'file_path' to the locate given by 'file_addr'. If
146 * 'bootfile' was specified in the environment, the path to bootfile will be
147 * prepended to 'file_path' and the resulting path will be used.
149 * Returns 1 on success, or < 0 for error.
151 int get_pxe_file(cmd_tbl_t
*cmdtp
, const char *file_path
,
152 unsigned long file_addr
)
154 unsigned long config_file_size
;
159 err
= get_relfile(cmdtp
, file_path
, file_addr
);
165 * the file comes without a NUL byte at the end, so find out its size
166 * and add the NUL byte.
168 tftp_filesize
= from_env("filesize");
173 if (strict_strtoul(tftp_filesize
, 16, &config_file_size
) < 0)
176 buf
= map_sysmem(file_addr
+ config_file_size
, 1);
183 #define PXELINUX_DIR "pxelinux.cfg/"
186 * Retrieves a file in the 'pxelinux.cfg' folder. Since this uses get_pxe_file
187 * to do the hard work, the location of the 'pxelinux.cfg' folder is generated
188 * from the bootfile path, as described above.
190 * Returns 1 on success or < 0 on error.
192 int get_pxelinux_path(cmd_tbl_t
*cmdtp
, const char *file
,
193 unsigned long pxefile_addr_r
)
195 size_t base_len
= strlen(PXELINUX_DIR
);
196 char path
[MAX_TFTP_PATH_LEN
+ 1];
198 if (base_len
+ strlen(file
) > MAX_TFTP_PATH_LEN
) {
199 printf("path (%s%s) too long, skipping\n",
201 return -ENAMETOOLONG
;
204 sprintf(path
, PXELINUX_DIR
"%s", file
);
206 return get_pxe_file(cmdtp
, path
, pxefile_addr_r
);
210 * Wrapper to make it easier to store the file at file_path in the location
211 * specified by envaddr_name. file_path will be joined to the bootfile path,
212 * if any is specified.
214 * Returns 1 on success or < 0 on error.
216 static int get_relfile_envaddr(cmd_tbl_t
*cmdtp
, const char *file_path
,
217 const char *envaddr_name
)
219 unsigned long file_addr
;
222 envaddr
= from_env(envaddr_name
);
227 if (strict_strtoul(envaddr
, 16, &file_addr
) < 0)
230 return get_relfile(cmdtp
, file_path
, file_addr
);
234 * Allocates memory for and initializes a pxe_label. This uses malloc, so the
235 * result must be free()'d to reclaim the memory.
237 * Returns NULL if malloc fails.
239 static struct pxe_label
*label_create(void)
241 struct pxe_label
*label
;
243 label
= malloc(sizeof(struct pxe_label
));
248 memset(label
, 0, sizeof(struct pxe_label
));
254 * Free the memory used by a pxe_label, including that used by its name,
255 * kernel, append and initrd members, if they're non NULL.
257 * So - be sure to only use dynamically allocated memory for the members of
258 * the pxe_label struct, unless you want to clean it up first. These are
259 * currently only created by the pxe file parsing code.
261 static void label_destroy(struct pxe_label
*label
)
288 * Print a label and its string members if they're defined.
290 * This is passed as a callback to the menu code for displaying each
293 static void label_print(void *data
)
295 struct pxe_label
*label
= data
;
296 const char *c
= label
->menu
? label
->menu
: label
->name
;
298 printf("%s:\t%s\n", label
->num
, c
);
302 * Boot a label that specified 'localboot'. This requires that the 'localcmd'
303 * environment variable is defined. Its contents will be executed as U-Boot
304 * command. If the label specified an 'append' line, its contents will be
305 * used to overwrite the contents of the 'bootargs' environment variable prior
306 * to running 'localcmd'.
308 * Returns 1 on success or < 0 on error.
310 static int label_localboot(struct pxe_label
*label
)
314 localcmd
= from_env("localcmd");
320 char bootargs
[CONFIG_SYS_CBSIZE
];
322 cli_simple_process_macros(label
->append
, bootargs
);
323 env_set("bootargs", bootargs
);
326 debug("running: %s\n", localcmd
);
328 return run_command_list(localcmd
, strlen(localcmd
), 0);
332 * Boot according to the contents of a pxe_label.
334 * If we can't boot for any reason, we return. A successful boot never
337 * The kernel will be stored in the location given by the 'kernel_addr_r'
338 * environment variable.
340 * If the label specifies an initrd file, it will be stored in the location
341 * given by the 'ramdisk_addr_r' environment variable.
343 * If the label specifies an 'append' line, its contents will overwrite that
344 * of the 'bootargs' environment variable.
346 static int label_boot(cmd_tbl_t
*cmdtp
, struct pxe_label
*label
)
348 char *bootm_argv
[] = { "bootm", NULL
, NULL
, NULL
, NULL
};
350 char mac_str
[29] = "";
351 char ip_str
[68] = "";
352 char *fit_addr
= NULL
;
360 label
->attempted
= 1;
362 if (label
->localboot
) {
363 if (label
->localboot_val
>= 0)
364 label_localboot(label
);
368 if (!label
->kernel
) {
369 printf("No kernel given, skipping %s\n",
375 if (get_relfile_envaddr(cmdtp
, label
->initrd
, "ramdisk_addr_r") < 0) {
376 printf("Skipping %s for failure retrieving initrd\n",
381 bootm_argv
[2] = initrd_str
;
382 strncpy(bootm_argv
[2], env_get("ramdisk_addr_r"), 18);
383 strcat(bootm_argv
[2], ":");
384 strncat(bootm_argv
[2], env_get("filesize"), 9);
388 if (get_relfile_envaddr(cmdtp
, label
->kernel
, "kernel_addr_r") < 0) {
389 printf("Skipping %s for failure retrieving kernel\n",
394 if (label
->ipappend
& 0x1) {
395 sprintf(ip_str
, " ip=%s:%s:%s:%s",
396 env_get("ipaddr"), env_get("serverip"),
397 env_get("gatewayip"), env_get("netmask"));
400 #ifdef CONFIG_CMD_NET
401 if (label
->ipappend
& 0x2) {
404 strcpy(mac_str
, " BOOTIF=");
405 err
= format_mac_pxe(mac_str
+ 8, sizeof(mac_str
) - 8);
411 if ((label
->ipappend
& 0x3) || label
->append
) {
412 char bootargs
[CONFIG_SYS_CBSIZE
] = "";
413 char finalbootargs
[CONFIG_SYS_CBSIZE
];
415 if (strlen(label
->append
?: "") +
416 strlen(ip_str
) + strlen(mac_str
) + 1 > sizeof(bootargs
)) {
417 printf("bootarg overflow %zd+%zd+%zd+1 > %zd\n",
418 strlen(label
->append
?: ""),
419 strlen(ip_str
), strlen(mac_str
),
425 strncpy(bootargs
, label
->append
, sizeof(bootargs
));
427 strcat(bootargs
, ip_str
);
428 strcat(bootargs
, mac_str
);
430 cli_simple_process_macros(bootargs
, finalbootargs
);
431 env_set("bootargs", finalbootargs
);
432 printf("append: %s\n", finalbootargs
);
435 bootm_argv
[1] = env_get("kernel_addr_r");
436 /* for FIT, append the configuration identifier */
438 int len
= strlen(bootm_argv
[1]) + strlen(label
->config
) + 1;
440 fit_addr
= malloc(len
);
442 printf("malloc fail (FIT address)\n");
445 snprintf(fit_addr
, len
, "%s%s", bootm_argv
[1], label
->config
);
446 bootm_argv
[1] = fit_addr
;
450 * fdt usage is optional:
451 * It handles the following scenarios. All scenarios are exclusive
453 * Scenario 1: If fdt_addr_r specified and "fdt" label is defined in
454 * pxe file, retrieve fdt blob from server. Pass fdt_addr_r to bootm,
455 * and adjust argc appropriately.
457 * Scenario 2: If there is an fdt_addr specified, pass it along to
458 * bootm, and adjust argc appropriately.
460 * Scenario 3: fdt blob is not available.
462 bootm_argv
[3] = env_get("fdt_addr_r");
464 /* if fdt label is defined then get fdt from server */
466 char *fdtfile
= NULL
;
467 char *fdtfilefree
= NULL
;
470 fdtfile
= label
->fdt
;
471 } else if (label
->fdtdir
) {
472 char *f1
, *f2
, *f3
, *f4
, *slash
;
474 f1
= env_get("fdtfile");
481 * For complex cases where this code doesn't
482 * generate the correct filename, the board
483 * code should set $fdtfile during early boot,
484 * or the boot scripts should set $fdtfile
485 * before invoking "pxe" or "sysboot".
489 f3
= env_get("board");
493 len
= strlen(label
->fdtdir
);
496 else if (label
->fdtdir
[len
- 1] != '/')
501 len
= strlen(label
->fdtdir
) + strlen(slash
) +
502 strlen(f1
) + strlen(f2
) + strlen(f3
) +
504 fdtfilefree
= malloc(len
);
506 printf("malloc fail (FDT filename)\n");
510 snprintf(fdtfilefree
, len
, "%s%s%s%s%s%s",
511 label
->fdtdir
, slash
, f1
, f2
, f3
, f4
);
512 fdtfile
= fdtfilefree
;
516 int err
= get_relfile_envaddr(cmdtp
, fdtfile
,
521 printf("Skipping %s for failure retrieving fdt\n",
526 bootm_argv
[3] = NULL
;
531 bootm_argv
[3] = env_get("fdt_addr");
539 kernel_addr
= genimg_get_kernel_addr(bootm_argv
[1]);
540 buf
= map_sysmem(kernel_addr
, 0);
541 /* Try bootm for legacy and FIT format image */
542 if (genimg_get_format(buf
) != IMAGE_FORMAT_INVALID
)
543 do_bootm(cmdtp
, 0, bootm_argc
, bootm_argv
);
544 #ifdef CONFIG_CMD_BOOTI
545 /* Try booting an AArch64 Linux kernel image */
547 do_booti(cmdtp
, 0, bootm_argc
, bootm_argv
);
548 #elif defined(CONFIG_CMD_BOOTZ)
549 /* Try booting a Image */
551 do_bootz(cmdtp
, 0, bootm_argc
, bootm_argv
);
562 * Tokens for the pxe file parser.
589 * A token - given by a value and a type.
593 enum token_type type
;
597 * Keywords recognized.
599 static const struct token keywords
[] = {
602 {"timeout", T_TIMEOUT
},
603 {"default", T_DEFAULT
},
604 {"prompt", T_PROMPT
},
606 {"kernel", T_KERNEL
},
608 {"localboot", T_LOCALBOOT
},
609 {"append", T_APPEND
},
610 {"initrd", T_INITRD
},
611 {"include", T_INCLUDE
},
612 {"devicetree", T_FDT
},
614 {"devicetreedir", T_FDTDIR
},
615 {"fdtdir", T_FDTDIR
},
616 {"ontimeout", T_ONTIMEOUT
,},
617 {"ipappend", T_IPAPPEND
,},
618 {"background", T_BACKGROUND
,},
623 * Since pxe(linux) files don't have a token to identify the start of a
624 * literal, we have to keep track of when we're in a state where a literal is
625 * expected vs when we're in a state a keyword is expected.
634 * get_string retrieves a string from *p and stores it as a token in
637 * get_string used for scanning both string literals and keywords.
639 * Characters from *p are copied into t-val until a character equal to
640 * delim is found, or a NUL byte is reached. If delim has the special value of
641 * ' ', any whitespace character will be used as a delimiter.
643 * If lower is unequal to 0, uppercase characters will be converted to
644 * lowercase in the result. This is useful to make keywords case
647 * The location of *p is updated to point to the first character after the end
648 * of the token - the ending delimiter.
650 * On success, the new value of t->val is returned. Memory for t->val is
651 * allocated using malloc and must be free()'d to reclaim it. If insufficient
652 * memory is available, NULL is returned.
654 static char *get_string(char **p
, struct token
*t
, char delim
, int lower
)
660 * b and e both start at the beginning of the input stream.
662 * e is incremented until we find the ending delimiter, or a NUL byte
663 * is reached. Then, we take e - b to find the length of the token.
669 if ((delim
== ' ' && isspace(*e
)) || delim
== *e
)
677 * Allocate memory to hold the string, and copy it in, converting
678 * characters to lowercase if lower is != 0.
680 t
->val
= malloc(len
+ 1);
684 for (i
= 0; i
< len
; i
++, b
++) {
686 t
->val
[i
] = tolower(*b
);
694 * Update *p so the caller knows where to continue scanning.
704 * Populate a keyword token with a type and value.
706 static void get_keyword(struct token
*t
)
710 for (i
= 0; keywords
[i
].val
; i
++) {
711 if (!strcmp(t
->val
, keywords
[i
].val
)) {
712 t
->type
= keywords
[i
].type
;
719 * Get the next token. We have to keep track of which state we're in to know
720 * if we're looking to get a string literal or a keyword.
722 * *p is updated to point at the first character after the current token.
724 static void get_token(char **p
, struct token
*t
, enum lex_state state
)
730 /* eat non EOL whitespace */
735 * eat comments. note that string literals can't begin with #, but
736 * can contain a # after their first character.
739 while (*c
&& *c
!= '\n')
746 } else if (*c
== '\0') {
749 } else if (state
== L_SLITERAL
) {
750 get_string(&c
, t
, '\n', 0);
751 } else if (state
== L_KEYWORD
) {
753 * when we expect a keyword, we first get the next string
754 * token delimited by whitespace, and then check if it
755 * matches a keyword in our keyword list. if it does, it's
756 * converted to a keyword token of the appropriate type, and
757 * if not, it remains a string token.
759 get_string(&c
, t
, ' ', 1);
767 * Increment *c until we get to the end of the current line, or EOF.
769 static void eol_or_eof(char **c
)
771 while (**c
&& **c
!= '\n')
776 * All of these parse_* functions share some common behavior.
778 * They finish with *c pointing after the token they parse, and return 1 on
779 * success, or < 0 on error.
783 * Parse a string literal and store a pointer it at *dst. String literals
784 * terminate at the end of the line.
786 static int parse_sliteral(char **c
, char **dst
)
791 get_token(c
, &t
, L_SLITERAL
);
793 if (t
.type
!= T_STRING
) {
794 printf("Expected string literal: %.*s\n", (int)(*c
- s
), s
);
804 * Parse a base 10 (unsigned) integer and store it at *dst.
806 static int parse_integer(char **c
, int *dst
)
811 get_token(c
, &t
, L_SLITERAL
);
813 if (t
.type
!= T_STRING
) {
814 printf("Expected string: %.*s\n", (int)(*c
- s
), s
);
818 *dst
= simple_strtol(t
.val
, NULL
, 10);
825 static int parse_pxefile_top(cmd_tbl_t
*cmdtp
, char *p
, unsigned long base
,
826 struct pxe_menu
*cfg
, int nest_level
);
829 * Parse an include statement, and retrieve and parse the file it mentions.
831 * base should point to a location where it's safe to store the file, and
832 * nest_level should indicate how many nested includes have occurred. For this
833 * include, nest_level has already been incremented and doesn't need to be
836 static int handle_include(cmd_tbl_t
*cmdtp
, char **c
, unsigned long base
,
837 struct pxe_menu
*cfg
, int nest_level
)
845 err
= parse_sliteral(c
, &include_path
);
848 printf("Expected include path: %.*s\n", (int)(*c
- s
), s
);
852 err
= get_pxe_file(cmdtp
, include_path
, base
);
855 printf("Couldn't retrieve %s\n", include_path
);
859 buf
= map_sysmem(base
, 0);
860 ret
= parse_pxefile_top(cmdtp
, buf
, base
, cfg
, nest_level
);
867 * Parse lines that begin with 'menu'.
869 * base and nest are provided to handle the 'menu include' case.
871 * base should point to a location where it's safe to store the included file.
873 * nest_level should be 1 when parsing the top level pxe file, 2 when parsing
874 * a file it includes, 3 when parsing a file included by that file, and so on.
876 static int parse_menu(cmd_tbl_t
*cmdtp
, char **c
, struct pxe_menu
*cfg
,
877 unsigned long base
, int nest_level
)
883 get_token(c
, &t
, L_KEYWORD
);
887 err
= parse_sliteral(c
, &cfg
->title
);
892 err
= handle_include(cmdtp
, c
, base
, cfg
, nest_level
+ 1);
896 err
= parse_sliteral(c
, &cfg
->bmp
);
900 printf("Ignoring malformed menu command: %.*s\n",
913 * Handles parsing a 'menu line' when we're parsing a label.
915 static int parse_label_menu(char **c
, struct pxe_menu
*cfg
,
916 struct pxe_label
*label
)
923 get_token(c
, &t
, L_KEYWORD
);
927 if (!cfg
->default_label
)
928 cfg
->default_label
= strdup(label
->name
);
930 if (!cfg
->default_label
)
935 parse_sliteral(c
, &label
->menu
);
938 printf("Ignoring malformed menu command: %.*s\n",
948 * Handles parsing a 'kernel' label.
949 * expecting "filename" or "<fit_filename>#cfg"
951 static int parse_label_kernel(char **c
, struct pxe_label
*label
)
956 err
= parse_sliteral(c
, &label
->kernel
);
960 s
= strstr(label
->kernel
, "#");
964 label
->config
= malloc(strlen(s
) + 1);
968 strcpy(label
->config
, s
);
975 * Parses a label and adds it to the list of labels for a menu.
977 * A label ends when we either get to the end of a file, or
978 * get some input we otherwise don't have a handler defined
982 static int parse_label(char **c
, struct pxe_menu
*cfg
)
987 struct pxe_label
*label
;
990 label
= label_create();
994 err
= parse_sliteral(c
, &label
->name
);
996 printf("Expected label name: %.*s\n", (int)(*c
- s
), s
);
997 label_destroy(label
);
1001 list_add_tail(&label
->list
, &cfg
->labels
);
1005 get_token(c
, &t
, L_KEYWORD
);
1010 err
= parse_label_menu(c
, cfg
, label
);
1015 err
= parse_label_kernel(c
, label
);
1019 err
= parse_sliteral(c
, &label
->append
);
1022 s
= strstr(label
->append
, "initrd=");
1026 len
= (int)(strchr(s
, ' ') - s
);
1027 label
->initrd
= malloc(len
+ 1);
1028 strncpy(label
->initrd
, s
, len
);
1029 label
->initrd
[len
] = '\0';
1035 err
= parse_sliteral(c
, &label
->initrd
);
1040 err
= parse_sliteral(c
, &label
->fdt
);
1045 err
= parse_sliteral(c
, &label
->fdtdir
);
1049 label
->localboot
= 1;
1050 err
= parse_integer(c
, &label
->localboot_val
);
1054 err
= parse_integer(c
, &label
->ipappend
);
1062 * put the token back! we don't want it - it's the end
1063 * of a label and whatever token this is, it's
1064 * something for the menu level context to handle.
1076 * This 16 comes from the limit pxelinux imposes on nested includes.
1078 * There is no reason at all we couldn't do more, but some limit helps prevent
1079 * infinite (until crash occurs) recursion if a file tries to include itself.
1081 #define MAX_NEST_LEVEL 16
1084 * Entry point for parsing a menu file. nest_level indicates how many times
1085 * we've nested in includes. It will be 1 for the top level menu file.
1087 * Returns 1 on success, < 0 on error.
1089 static int parse_pxefile_top(cmd_tbl_t
*cmdtp
, char *p
, unsigned long base
,
1090 struct pxe_menu
*cfg
, int nest_level
)
1093 char *s
, *b
, *label_name
;
1098 if (nest_level
> MAX_NEST_LEVEL
) {
1099 printf("Maximum nesting (%d) exceeded\n", MAX_NEST_LEVEL
);
1106 get_token(&p
, &t
, L_KEYWORD
);
1112 err
= parse_menu(cmdtp
, &p
, cfg
,
1113 base
+ ALIGN(strlen(b
) + 1, 4),
1118 err
= parse_integer(&p
, &cfg
->timeout
);
1122 err
= parse_label(&p
, cfg
);
1127 err
= parse_sliteral(&p
, &label_name
);
1130 if (cfg
->default_label
)
1131 free(cfg
->default_label
);
1133 cfg
->default_label
= label_name
;
1139 err
= handle_include(cmdtp
, &p
,
1140 base
+ ALIGN(strlen(b
), 4), cfg
,
1155 printf("Ignoring unknown command: %.*s\n",
1166 * Free the memory used by a pxe_menu and its labels.
1168 void destroy_pxe_menu(struct pxe_menu
*cfg
)
1170 struct list_head
*pos
, *n
;
1171 struct pxe_label
*label
;
1176 if (cfg
->default_label
)
1177 free(cfg
->default_label
);
1179 list_for_each_safe(pos
, n
, &cfg
->labels
) {
1180 label
= list_entry(pos
, struct pxe_label
, list
);
1182 label_destroy(label
);
1189 * Entry point for parsing a pxe file. This is only used for the top level
1192 * Returns NULL if there is an error, otherwise, returns a pointer to a
1193 * pxe_menu struct populated with the results of parsing the pxe file (and any
1194 * files it includes). The resulting pxe_menu struct can be free()'d by using
1195 * the destroy_pxe_menu() function.
1197 struct pxe_menu
*parse_pxefile(cmd_tbl_t
*cmdtp
, unsigned long menucfg
)
1199 struct pxe_menu
*cfg
;
1203 cfg
= malloc(sizeof(struct pxe_menu
));
1208 memset(cfg
, 0, sizeof(struct pxe_menu
));
1210 INIT_LIST_HEAD(&cfg
->labels
);
1212 buf
= map_sysmem(menucfg
, 0);
1213 r
= parse_pxefile_top(cmdtp
, buf
, menucfg
, cfg
, 1);
1217 destroy_pxe_menu(cfg
);
1225 * Converts a pxe_menu struct into a menu struct for use with U-Boot's generic
1228 static struct menu
*pxe_menu_to_menu(struct pxe_menu
*cfg
)
1230 struct pxe_label
*label
;
1231 struct list_head
*pos
;
1235 char *default_num
= NULL
;
1238 * Create a menu and add items for all the labels.
1240 m
= menu_create(cfg
->title
, DIV_ROUND_UP(cfg
->timeout
, 10),
1241 cfg
->prompt
, NULL
, label_print
, NULL
, NULL
);
1246 list_for_each(pos
, &cfg
->labels
) {
1247 label
= list_entry(pos
, struct pxe_label
, list
);
1249 sprintf(label
->num
, "%d", i
++);
1250 if (menu_item_add(m
, label
->num
, label
) != 1) {
1254 if (cfg
->default_label
&&
1255 (strcmp(label
->name
, cfg
->default_label
) == 0))
1256 default_num
= label
->num
;
1260 * After we've created items for each label in the menu, set the
1261 * menu's default label if one was specified.
1264 err
= menu_default_set(m
, default_num
);
1266 if (err
!= -ENOENT
) {
1271 printf("Missing default: %s\n", cfg
->default_label
);
1279 * Try to boot any labels we have yet to attempt to boot.
1281 static void boot_unattempted_labels(cmd_tbl_t
*cmdtp
, struct pxe_menu
*cfg
)
1283 struct list_head
*pos
;
1284 struct pxe_label
*label
;
1286 list_for_each(pos
, &cfg
->labels
) {
1287 label
= list_entry(pos
, struct pxe_label
, list
);
1289 if (!label
->attempted
)
1290 label_boot(cmdtp
, label
);
1295 * Boot the system as prescribed by a pxe_menu.
1297 * Use the menu system to either get the user's choice or the default, based
1298 * on config or user input. If there is no default or user's choice,
1299 * attempted to boot labels in the order they were given in pxe files.
1300 * If the default or user's choice fails to boot, attempt to boot other
1301 * labels in the order they were given in pxe files.
1303 * If this function returns, there weren't any labels that successfully
1304 * booted, or the user interrupted the menu selection via ctrl+c.
1306 void handle_pxe_menu(cmd_tbl_t
*cmdtp
, struct pxe_menu
*cfg
)
1312 #ifdef CONFIG_CMD_BMP
1313 /* display BMP if available */
1315 if (get_relfile(cmdtp
, cfg
->bmp
, image_load_addr
)) {
1316 if (CONFIG_IS_ENABLED(CMD_CLS
))
1317 run_command("cls", 0);
1318 bmp_display(image_load_addr
,
1319 BMP_ALIGN_CENTER
, BMP_ALIGN_CENTER
);
1321 printf("Skipping background bmp %s for failure\n",
1327 m
= pxe_menu_to_menu(cfg
);
1331 err
= menu_get_choice(m
, &choice
);
1336 * err == 1 means we got a choice back from menu_get_choice.
1338 * err == -ENOENT if the menu was setup to select the default but no
1339 * default was set. in that case, we should continue trying to boot
1340 * labels that haven't been attempted yet.
1342 * otherwise, the user interrupted or there was some other error and
1347 err
= label_boot(cmdtp
, choice
);
1350 } else if (err
!= -ENOENT
) {
1354 boot_unattempted_labels(cmdtp
, cfg
);