lib/efi_loader/efi_memory.c

39 /* This list contains all memory map items */
86  * efi_mem_cmp() - comparator function for sorting memory map
124  * efi_mem_sort() - sort memory map
126  * Sort the memory map and then try to merge adjacent memory areas.
156 				/* There is an existing map before, reuse it */
176  * @map:		memory map
180  *			removed from the map,
182  *			EFI_CARVE_OVERLAPS_NONRAM, if the carve and map overlap,
183  *			and the map contains anything but free ram
189  * pointed to by map.
194 static s64 efi_mem_carve_out(struct efi_mem_list *map,
199 	struct efi_mem_desc *map_desc = &map->desc;
218 	/* Carving at the beginning of our map? Just move it! */
221 			/* Full overlap, just remove map */
222 			list_del(&map->link);
223 			free(map);
225 			map->desc.physical_start = carve_end;
226 			map->desc.virtual_start = carve_end;
227 			map->desc.num_pages = (map_end - carve_end)
235 	 * Overlapping maps, just split the list map at carve_start,
241 	/* Create a new map from [ carve_start ... map_end ] */
245 	newmap->desc = map->desc;
250 	list_add_tail(&newmap->link, &map->link);
252 	/* Shrink the map to [ map_start ... carve_start ] */
259  * efi_add_memory_map_pg() - add pages to the memory map
308 	/* Add our new map */
362 	/* Add our new map */
368 	/* Notify that the memory map was changed */
382  * efi_add_memory_map() - add memory area to the memory map
408  * * The address must be in a range of the memory map.
472 		/* Out of bounds for upper map limit */
476 		/* Out of bounds for lower map limit */
480 		/* Return the highest address in this map within bounds */
543 	/* Reserve that map in our memory maps */
729  * efi_get_memory_map() - get map describing memory usage.
731  * @memory_map_size:	on entry the size, in bytes, of the memory map buffer,
732  *			on exit the size of the copied memory map
733  * @memory_map:		buffer to which the memory map is written
734  * @map_key:		key for the memory map
792  * efi_get_memory_map_alloc() - allocate map describing memory usage
796  * @map_size:		size of the memory map
797  * @memory_map:		buffer to which the memory map is written
809 		*map_size += sizeof(struct efi_mem_desc); /* for the map */
826  * efi_add_conventional_memory_map() - add a RAM memory area to the map
874  * efi_add_known_memory() - add memory banks to map
905  * add_u_boot_and_runtime() - add U-Boot code to memory map