null_memmap.h

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#ifndef _IPXE_NULL_MEMMAP_H
#define _IPXE_NULL_MEMMAP_H

#include <stdint.h>

/** @file
 *
 * Null system memory map API
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );

#ifdef MEMMAP_NULL
#define MEMMAP_PREFIX_null
#else
#define MEMMAP_PREFIX_null __null_
#endif

/**
 * Describe memory region from system memory map
 *
 * @v min               Minimum address
 * @v hide              Hide in-use regions from the memory map
 * @v region            Region descriptor to fill in
 */
static inline __attribute__ (( always_inline )) void
MEMMAP_INLINE ( null, memmap_describe ) ( uint64_t min, int hide __unused,
                                          struct memmap_region *region ) {

        /* Initialise region as empty */
        memmap_init ( min, region );
}

/**
 * Synchronise in-use regions with the externally visible system memory map
 *
 */
static inline __attribute__ (( always_inline )) void
MEMMAP_INLINE ( null, memmap_sync ) ( void ) {
        /* Nothing to do */
}

#endif /* _IPXE_NULL_MEMMAP_H */