Fix remaining initial porting guide's issues
diff --git a/doc/PORTING.md b/doc/PORTING.md
index b1141ec..d40bb3d 100644
--- a/doc/PORTING.md
+++ b/doc/PORTING.md
@@ -13,8 +13,6 @@
either `mbed TLS` or the set `tinycrypt` + `mbed TLS` (where `mbed TLS` is
used to provide functionality not existing in `tinycrypt`).
-* TODO: what more?
-
# Steps to port
## Main app and calling the bootloader
@@ -57,7 +55,7 @@
`mcuboot` needs to know the write size (and alignment) of the flash. To get
this information it calls `hal_flash_align`.
-TODO: this needs to die and move to flash_map...
+`uint8_t hal_flash_align(uint8_t flash_id);`
### flash_map
@@ -99,7 +97,7 @@
int flash_area_erase(const struct flash_area *, uint32_t off, uint32_t len);
/*< Returns this `flash_area`s alignment */
uint8_t flash_area_align(const struct flash_area *);
-/*< TODO */
+/*< Initializes an array of flash_area elements for the slot's sectors */
int flash_area_to_sectors(int idx, int *cnt, struct flash_area *ret);
/*< Returns the `fa_id` for slot, where slot is 0 or 1 */
int flash_area_id_from_image_slot(int slot);