* Add missing function descriptions * Adjust to Sphinx style
Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- lib/efi_loader/efi_memory.c | 82 ++++++++++++++++++++++++++++--------- 1 file changed, 62 insertions(+), 20 deletions(-)
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c index 32254d2433..a108427d72 100644 --- a/lib/efi_loader/efi_memory.c +++ b/lib/efi_loader/efi_memory.c @@ -78,12 +78,19 @@ static u64 checksum(struct efi_pool_allocation *alloc) return ret; }
-/* +/** + * efi_mem_cmp() - comparator function for sorting memory map + * * Sorts the memory list from highest address to lowest address * * When allocating memory we should always start from the highest * address chunk, so sort the memory list such that the first list * iterator gets the highest address and goes lower from there. + * + * @priv: unused + * @a: first memory area + * @b: second memory area + * Return: 1 if @a is before @b, -1 if @b is before @a, 0 if equal */ static int efi_mem_cmp(void *priv, struct list_head *a, struct list_head *b) { @@ -98,11 +105,22 @@ static int efi_mem_cmp(void *priv, struct list_head *a, struct list_head *b) return -1; }
+/** + * desc_get_end() - get end address of memory area + * + * @desc: memory descriptor + * Return: end address + 1 + */ static uint64_t desc_get_end(struct efi_mem_desc *desc) { return desc->physical_start + (desc->num_pages << EFI_PAGE_SHIFT); }
+/** + * efi_mem_sort() - sort memory map + * + * Sort the memory map and then try to merge adjacent memory areas. + */ static void efi_mem_sort(void) { struct list_head *lhandle; @@ -148,12 +166,13 @@ static void efi_mem_sort(void) } }
-/** efi_mem_carve_out - unmap memory region +/** + * efi_mem_carve_out() - unmap memory region * * @map: memory map * @carve_desc: memory region to unmap * @overlap_only_ram: the carved out region may only overlap RAM - * Return Value: the number of overlapping pages which have been + * Return: the number of overlapping pages which have been * removed from the map, * EFI_CARVE_NO_OVERLAP, if the regions don't overlap, * EFI_CARVE_OVERLAPS_NONRAM, if the carve and map overlap, @@ -403,6 +422,13 @@ static efi_status_t efi_check_allocated(u64 addr, bool must_be_allocated) return EFI_NOT_FOUND; }
+/** + * efi_find_free_memory() - find free memory pages + * + * @len: size of memory area needed + * @max_addr: highest address to allocate + * Return: pointer to free memory area or 0 + */ static uint64_t efi_find_free_memory(uint64_t len, uint64_t max_addr) { struct list_head *lhandle; @@ -445,13 +471,13 @@ static uint64_t efi_find_free_memory(uint64_t len, uint64_t max_addr) return 0; }
-/* - * Allocate memory pages. +/** + * efi_allocate_pages - allocate memory pages * - * @type type of allocation to be performed - * @memory_type usage type of the allocated memory - * @pages number of pages to be allocated - * @memory allocated memory + * @type: type of allocation to be performed + * @memory_type: usage type of the allocated memory + * @pages: number of pages to be allocated + * @memory: allocated memory * Return: status code */ efi_status_t efi_allocate_pages(enum efi_allocate_type type, @@ -507,6 +533,13 @@ efi_status_t efi_allocate_pages(enum efi_allocate_type type, return EFI_SUCCESS; }
+/** + * efi_alloc() - allocate memory pages + * + * @len: size of the memory to be allocated + * @memory_type: usage type of the allocated memory + * Return: pointer to the allocated memory area or NULL + */ void *efi_alloc(uint64_t len, int memory_type) { uint64_t ret = 0; @@ -552,7 +585,7 @@ efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages) }
/** - * efi_alloc_aligned_pages - allocate + * efi_alloc_aligned_pages() - allocate aligned memory pages * * @len: len in bytes * @memory_type: usage type of the allocated memory @@ -673,15 +706,15 @@ efi_status_t efi_free_pool(void *buffer) return ret; }
-/* - * Get map describing memory usage. +/** + * efi_get_memory_map() - get map describing memory usage. * - * @memory_map_size on entry the size, in bytes, of the memory map buffer, + * @memory_map_size: on entry the size, in bytes, of the memory map buffer, * on exit the size of the copied memory map - * @memory_map buffer to which the memory map is written - * @map_key key for the memory map - * @descriptor_size size of an individual memory descriptor - * @descriptor_version version number of the memory descriptor structure + * @memory_map: buffer to which the memory map is written + * @map_key: key for the memory map + * @descriptor_size: size of an individual memory descriptor + * @descriptor_version: version number of the memory descriptor structure * Return: status code */ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, @@ -741,8 +774,8 @@ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, * * The caller is responsible for calling FreePool() if the call succeeds. * - * @memory_map buffer to which the memory map is written - * @map_size size of the memory map + * @map_size: size of the memory map + * @memory_map: buffer to which the memory map is written * Return: status code */ efi_status_t efi_get_memory_map_alloc(efi_uintn_t *map_size, @@ -818,6 +851,11 @@ efi_status_t efi_add_conventional_memory_map(u64 ram_start, u64 ram_end, return EFI_SUCCESS; }
+/** + * efi_add_known_memory() - add memory banks to map + * + * This function may be overridden for specific architectures. + */ __weak void efi_add_known_memory(void) { u64 ram_top = board_get_usable_ram_top(0) & ~EFI_PAGE_MASK; @@ -844,7 +882,11 @@ __weak void efi_add_known_memory(void) } }
-/* Add memory regions for U-Boot's memory and for the runtime services code */ +/** + * add_u_boot_and_runtime() - add U-Boot code to memory map + * + * Add memory regions for U-Boot's memory and for the runtime services code. + */ static void add_u_boot_and_runtime(void) { unsigned long runtime_start, runtime_end, runtime_pages;