diff options
Diffstat (limited to 'cmd/pxe_utils.h')
-rw-r--r-- | cmd/pxe_utils.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/cmd/pxe_utils.h b/cmd/pxe_utils.h new file mode 100644 index 0000000000..a38ac81a47 --- /dev/null +++ b/cmd/pxe_utils.h @@ -0,0 +1,88 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef __PXE_UTILS_H +#define __PXE_UTILS_H + +/* + * A note on the pxe file parser. + * + * We're parsing files that use syslinux grammar, which has a few quirks. + * String literals must be recognized based on context - there is no + * quoting or escaping support. There's also nothing to explicitly indicate + * when a label section completes. We deal with that by ending a label + * section whenever we see a line that doesn't include. + * + * As with the syslinux family, this same file format could be reused in the + * future for non pxe purposes. The only action it takes during parsing that + * would throw this off is handling of include files. It assumes we're using + * pxe, and does a tftp download of a file listed as an include file in the + * middle of the parsing operation. That could be handled by refactoring it to + * take a 'include file getter' function. + */ + +/* + * Describes a single label given in a pxe file. + * + * Create these with the 'label_create' function given below. + * + * name - the name of the menu as given on the 'menu label' line. + * kernel - the path to the kernel file to use for this label. + * append - kernel command line to use when booting this label + * initrd - path to the initrd to use for this label. + * attempted - 0 if we haven't tried to boot this label, 1 if we have. + * localboot - 1 if this label specified 'localboot', 0 otherwise. + * list - lets these form a list, which a pxe_menu struct will hold. + */ +struct pxe_label { + char num[4]; + char *name; + char *menu; + char *kernel; + char *config; + char *append; + char *initrd; + char *fdt; + char *fdtdir; + int ipappend; + int attempted; + int localboot; + int localboot_val; + struct list_head list; +}; + +/* + * Describes a pxe menu as given via pxe files. + * + * title - the name of the menu as given by a 'menu title' line. + * default_label - the name of the default label, if any. + * bmp - the bmp file name which is displayed in background + * timeout - time in tenths of a second to wait for a user key-press before + * booting the default label. + * prompt - if 0, don't prompt for a choice unless the timeout period is + * interrupted. If 1, always prompt for a choice regardless of + * timeout. + * labels - a list of labels defined for the menu. + */ +struct pxe_menu { + char *title; + char *default_label; + char *bmp; + int timeout; + int prompt; + struct list_head labels; +}; + +extern bool is_pxe; + +extern int (*do_getfile)(cmd_tbl_t *cmdtp, const char *file_path, + char *file_addr); +void destroy_pxe_menu(struct pxe_menu *cfg); +int get_pxe_file(cmd_tbl_t *cmdtp, const char *file_path, + unsigned long file_addr); +int get_pxelinux_path(cmd_tbl_t *cmdtp, const char *file, + unsigned long pxefile_addr_r); +void handle_pxe_menu(cmd_tbl_t *cmdtp, struct pxe_menu *cfg); +struct pxe_menu *parse_pxefile(cmd_tbl_t *cmdtp, unsigned long menucfg); +int format_mac_pxe(char *outbuf, size_t outbuf_len); + +#endif /* __PXE_UTILS_H */ |