93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/**
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* PROJECT: ExectOS
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* COPYRIGHT: See COPYING.md in the top level directory
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* FILE: xtldr/memory.c
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* DESCRIPTION: XT Boot Manager EFI memory management
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <xtbm.h>
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/**
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* This routine allocates one or more 4KB pages.
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*
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* @param Pages
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* The number of contiguous 4KB pages to allocate.
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*
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* @param Memory
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* The pointer to a physical address.
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*
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* @return This routine returns a status code.
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*
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* @since XT 1.0
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*/
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XTCDECL
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EFI_STATUS
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BmAllocateEfiPages(IN UINT64 Pages,
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OUT PEFI_PHYSICAL_ADDRESS Memory)
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{
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return EfiSystemTable->BootServices->AllocatePages(AllocateAnyPages, EfiLoaderData, Pages, Memory);
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}
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/**
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* This routine allocates a pool memory.
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*
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* @param Size
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* The number of bytes to allocate from the pool.
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*
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* @param Memory
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* The pointer to a physical address.
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*
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* @return This routine returns a status code.
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*
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* @since XT 1.0
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*/
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XTCDECL
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EFI_STATUS
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BmAllocateEfiPool(IN UINT_PTR Size,
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OUT PVOID *Memory)
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{
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/* Allocate pool */
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return EfiSystemTable->BootServices->AllocatePool(EfiLoaderData, Size, Memory);
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}
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/**
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* This routine frees memory pages.
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*
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* @param Pages
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* The number of contiguous 4 KB pages to free.
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*
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* @param Memory
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* The base physical address of the pages to be freed.
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*
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* @return This routine returns a status code.
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*
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* @since XT 1.0
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*/
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XTCDECL
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EFI_STATUS
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BmFreeEfiPages(IN UINT64 Pages,
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IN EFI_PHYSICAL_ADDRESS Memory)
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{
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return EfiSystemTable->BootServices->FreePages(Memory, Pages);
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}
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/**
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* Returns pool memory to the system.
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*
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* @param Memory
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* The pointer to the buffer to free.
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*
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* @return This routine returns a status code.
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*
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* @since XT 1.0
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*/
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XTCDECL
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EFI_STATUS
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BmFreeEfiPool(IN PVOID Memory)
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{
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/* Free pool */
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return EfiSystemTable->BootServices->FreePool(Memory);
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}
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