initrd.h

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#ifndef _IPXE_INITRD_H
#define _IPXE_INITRD_H
 
/** @file
 *
 * Initial ramdisk (initrd) reshuffling
 *
 */
 
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );
 
#include <stdint.h>
#include <ipxe/memmap.h>
 
/** Initial ramdisk chunk alignment */
#define INITRD_ALIGN 4096
 
extern void initrd_reshuffle ( void );
extern int initrd_region ( size_t len, struct memmap_region *region );
extern size_t initrd_load_all ( void *address );
 
/**
 * Align initrd length
 *
 * @v len               Length
 * @ret len             Aligned length
 */
static inline __attribute__ (( always_inline )) size_t
initrd_align ( size_t len ) {
 
        return ( ( len + INITRD_ALIGN - 1 ) & ~( INITRD_ALIGN - 1 ) );
}
 
/**
 * Get required length for initrds
 *
 * @ret len             Required length
 */
static inline __attribute__ (( always_inline )) size_t
initrd_len ( void ) {
 
        return initrd_load_all ( NULL );
}
 
#endif /* _IPXE_INITRD_H */