null_memmap.h File Reference

Null system memory map API. More...

#include <stdint.h>

Go to the source code of this file.

Macros
#define	MEMMAP_PREFIX_null   __null_

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	FILE_SECBOOT (PERMITTED)
static	__attribute__ ((always_inline)) void MEMMAP_INLINE(null
	Describe memory region from system memory map.
static	memmap_describe (uint64_t min, int hide __unused, struct memmap_region *region)
	Describe memory region from system memory map.
static	memmap_sync (void)
	Synchronise in-use regions with the externally visible system memory map.

Detailed Description

Null system memory map API.

Definition in file null_memmap.h.

Macro Definition Documentation

MEMMAP_PREFIX_null

#define MEMMAP_PREFIX_null   __null_

Definition at line 18 of file null_memmap.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

FILE_SECBOOT()

FILE_SECBOOT

(

PERMITTED

)

__attribute__()

__attribute__ ( (always_inline) )

inlinestatic

Describe memory region from system memory map.

Synchronise in-use regions with the externally visible system memory map.

Parameters

min	Minimum address
hide	Hide in-use regions from the memory map
region	Region descriptor to fill in

memmap_describe()

memmap_describe	(	uint64_t	min,
		int	hide,
		struct memmap_region *	region )

Describe memory region from system memory map.

Parameters

min	Minimum address
hide	Hide in-use regions from the memory map
region	Region descriptor to fill in

Definition at line 29 of file null_memmap.h.

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

References __unused, memmap_describe(), memmap_init(), and min.

Referenced by com32_exec_loop(), memmap_describe(), memmap_dump_all(), prep_segment(), PROVIDE_MEMMAP(), PROVIDE_MEMMAP(), and PROVIDE_MEMMAP_INLINE().

memmap_sync()

memmap_sync

(

void

)

Synchronise in-use regions with the externally visible system memory map.

In environments such as x86 BIOS, we need to patch the global system memory map to hide our in-use regions, since there is no other way to communicate this information to external code.

Definition at line 41 of file null_memmap.h.

                                             {
        /* Nothing to do */
}

References memmap_sync().

Referenced by memmap_use().