efi_table.h

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#ifndef _IPXE_EFI_TABLE_H
#define _IPXE_EFI_TABLE_H

/** @file
 *
 * EFI configuration tables
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );

#include <ipxe/efi/efi.h>

/** An installable EFI configuration table type */
struct efi_table {
        /** Table GUID */
        EFI_GUID *guid;
        /**
         * Determine length of table
         *
         * @v data              Configuration table data (presumed valid)
         * @ret len             Length of table
         *
         * EFI does not record the length of installed configuration
         * tables.  Consumers must understand the specific type of
         * table in order to be able to determine its length from the
         * contents.
         */
        size_t ( * len ) ( const void *data );
};

extern void * efi_find_table ( EFI_GUID *guid );
extern int efi_install_table ( struct efi_table *table, const void *data,
                               void **backup );
extern int efi_uninstall_table ( struct efi_table *table, void **backup );

#endif /* _IPXE_EFI_TABLE_H */