linux/drivers/firmware/efi/libstub/alignedmem.c

// SPDX-License-Identifier: GPL-2.0

#include <linux/efi.h>
#include <asm/efi.h>

#include "efistub.h"

/**
 * efi_allocate_pages_aligned() - Allocate memory pages
 * @size:	minimum number of bytes to allocate
 * @addr:	On return the address of the first allocated page. The first
 *		allocated page has alignment EFI_ALLOC_ALIGN which is an
 *		architecture dependent multiple of the page size.
 * @max:	the address that the last allocated memory page shall not
 *		exceed
 * @align:	minimum alignment of the base of the allocation
 * @memory_type: the type of memory to allocate
 *
 * Allocate pages as EFI_LOADER_DATA. The allocated pages are aligned according
 * to @align, which should be >= EFI_ALLOC_ALIGN. The last allocated page will
 * not exceed the address given by @max.
 *
 * Return:	status code
 */
efi_status_t efi_allocate_pages_aligned(unsigned long size, unsigned long *addr,
					unsigned long max, unsigned long align,
					int memory_type)
{ … }