1 /* SPDX-License-Identifier: GPL-2.0+ */
6 #include <linux/list.h>
9 * A note on the pxe file parser.
11 * We're parsing files that use syslinux grammar, which has a few quirks.
12 * String literals must be recognized based on context - there is no
13 * quoting or escaping support. There's also nothing to explicitly indicate
14 * when a label section completes. We deal with that by ending a label
15 * section whenever we see a line that doesn't include.
17 * As with the syslinux family, this same file format could be reused in the
18 * future for non pxe purposes. The only action it takes during parsing that
19 * would throw this off is handling of include files. It assumes we're using
20 * pxe, and does a tftp download of a file listed as an include file in the
21 * middle of the parsing operation. That could be handled by refactoring it to
22 * take a 'include file getter' function.
26 * Describes a single label given in a pxe file.
28 * Create these with the 'label_create' function given below.
30 * name - the name of the menu as given on the 'menu label' line.
31 * kernel - the path to the kernel file to use for this label.
32 * append - kernel command line to use when booting this label
33 * initrd - path to the initrd to use for this label.
34 * attempted - 0 if we haven't tried to boot this label, 1 if we have.
35 * localboot - 1 if this label specified 'localboot', 0 otherwise.
36 * list - lets these form a list, which a pxe_menu struct will hold.
53 struct list_head list;
57 * Describes a pxe menu as given via pxe files.
59 * title - the name of the menu as given by a 'menu title' line.
60 * default_label - the name of the default label, if any.
61 * bmp - the bmp file name which is displayed in background
62 * timeout - time in tenths of a second to wait for a user key-press before
63 * booting the default label.
64 * prompt - if 0, don't prompt for a choice unless the timeout period is
65 * interrupted. If 1, always prompt for a choice regardless of
67 * labels - a list of labels defined for the menu.
75 struct list_head labels;
80 extern int (*do_getfile)(struct cmd_tbl *cmdtp, const char *file_path,
82 void destroy_pxe_menu(struct pxe_menu *cfg);
83 int get_pxe_file(struct cmd_tbl *cmdtp, const char *file_path,
84 unsigned long file_addr);
85 int get_pxelinux_path(struct cmd_tbl *cmdtp, const char *file,
86 unsigned long pxefile_addr_r);
87 void handle_pxe_menu(struct cmd_tbl *cmdtp, struct pxe_menu *cfg);
88 struct pxe_menu *parse_pxefile(struct cmd_tbl *cmdtp, unsigned long menucfg);
89 int format_mac_pxe(char *outbuf, size_t outbuf_len);
91 #endif /* __PXE_UTILS_H */