lib/efi_loader/efi_memory.c

49  * @num_pages:	number of pages allocated
54  * (multiple) page allocation. We have to track the number of pages
143 			uint64_t pages;
157 				pages = cur->num_pages;
158 				prev->num_pages += pages;
159 				prev->physical_start -= pages << EFI_PAGE_SHIFT;
160 				prev->virtual_start -= pages << EFI_PAGE_SHIFT;
179  * Return:		the number of overlapping pages which have been
192  * to re-add the already carved out pages to the mapping.
259  * efi_add_memory_map_pg() - add pages to the memory map
262  * @pages:		number of pages to add
267 static efi_status_t efi_add_memory_map_pg(u64 start, u64 pages,
278 		  start, pages, memory_type, overlap_only_ram ? "yes" : "no");
283 	if (!pages)
293 	newlist->desc.num_pages = pages;
340 				/* We carved a number of pages */
353 	if (overlap_only_ram && (carved_pages != pages)) {
395 	u64 pages;
397 	pages = efi_size_in_pages(size + (start & EFI_PAGE_MASK));
400 	return efi_add_memory_map_pg(start, pages, memory_type, false);
439  * efi_find_free_memory() - find free memory pages
488  * efi_allocate_pages - allocate memory pages
492  * @pages:		number of pages to be allocated
498 				efi_uintn_t pages, uint64_t *memory)
510 	len = (u64)pages << EFI_PAGE_SHIFT;
513 	    (len >> EFI_PAGE_SHIFT) != (u64)pages)
544 	ret = efi_add_memory_map_pg(addr, pages, memory_type, true);
555  * efi_free_pages() - free memory pages
558  * @pages:	number of pages to be freed
561 efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages)
570 	if (!memory || (memory & EFI_PAGE_MASK) || !pages) {
572 		       memory, pages);
576 	ret = efi_add_memory_map_pg(memory, pages, EFI_CONVENTIONAL_MEMORY,
585  * efi_alloc_aligned_pages() - allocate aligned memory pages
621 	/* Free pages before alignment */
626 	/* Free trailing pages */
836 	u64 pages;
838 	/* Remove partial pages */
847 	pages = (ram_end - ram_start) >> EFI_PAGE_SHIFT;
849 	efi_add_memory_map_pg(ram_start, pages,
860 		efi_add_memory_map_pg(ram_start, pages,
864 		pages = (ram_end - ram_top) >> EFI_PAGE_SHIFT;
866 		efi_add_memory_map_pg(ram_top, pages,