nuttx: Add implementation of flash_area_get_sectors_fa

Variant of flash_area_get_sectors that takes flash_area object
pointer instead of flash area identifier.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>

Author: de-nordic

boot/nuttx/include/flash_map_backend/flash_map_backend.h

@@ -351,6 +351,28 @@ uint8_t flash_area_erased_val(const struct flash_area *fa);
 int flash_area_get_sectors(int fa_id, uint32_t *count,
                            struct flash_sector *sectors);
 
+/****************************************************************************
+ * Name: flash_area_get_sectors_fa
+ *
+ * Description:
+ *   Retrieve info about sectors within the area.
+ *
+ * Input Parameters:
+ *   fa      - flash area object pointer.
+ *   count   - On input, represents the capacity of the sectors buffer.
+ *
+ * Output Parameters:
+ *   count   - On output, it shall contain the number of retrieved sectors.
+ *   sectors - Buffer for sectors data.
+ *
+ * Returned Value:
+ *   Zero on success, or negative value in case of error.
+ *
+ ****************************************************************************/
+
+int flash_area_get_sectors(const struct flash_area *fa, uint32_t *count,
+                           struct flash_sector *sectors);
+
 /****************************************************************************
  * Name: flash_area_id_from_multi_image_slot
  *

boot/nuttx/src/flash_map_backend/flash_map_backend.c

@@ -641,13 +641,13 @@ uint8_t flash_area_erased_val(const struct flash_area *fa)
 }
 
 /****************************************************************************
- * Name: flash_area_get_sectors
+ * Name: flash_area_get_sectors_fa
  *
  * Description:
  *   Retrieve info about sectors within the area.
  *
  * Input Parameters:
- *   fa_id   - ID of the flash area whose info will be retrieved.
+ *   fa      - pointer to flash area object.
  *   count   - On input, represents the capacity of the sectors buffer.
  *
  * Output Parameters:
@@ -659,15 +659,9 @@ uint8_t flash_area_erased_val(const struct flash_area *fa)
  *
  ****************************************************************************/
 
-int flash_area_get_sectors(int fa_id, uint32_t *count,
-                           struct flash_sector *sectors)
+int flash_area_get_sectors_fa(const struct flash_area *fa, uint32_t *count,
+                              struct flash_sector *sectors)
 {
-  size_t off;
-  uint32_t total_count = 0;
-  struct flash_device_s *dev = lookup_flash_device_by_id(fa_id);
-  const size_t sector_size = dev->mtdgeo.erasesize;
-  const struct flash_area *fa = fa = dev->fa_cfg;
-
   for (off = 0; off < fa->fa_size; off += sector_size)
     {
       /* Note: Offset here is relative to flash area, not device */
@@ -686,6 +680,38 @@ int flash_area_get_sectors(int fa_id, uint32_t *count,
   return OK;
 }
 
+
+/****************************************************************************
+ * Name: flash_area_get_sectors
+ *
+ * Description:
+ *   Retrieve info about sectors within the area.
+ *
+ * Input Parameters:
+ *   fa_id   - ID of the flash area whose info will be retrieved.
+ *   count   - On input, represents the capacity of the sectors buffer.
+ *
+ * Output Parameters:
+ *   count   - On output, it shall contain the number of retrieved sectors.
+ *   sectors - Buffer for sectors data.
+ *
+ * Returned Value:
+ *   Zero on success, or negative value in case of error.
+ *
+ ****************************************************************************/
+
+int flash_area_get_sectors(int fa_id, uint32_t *count,
+                           struct flash_sector *sectors)
+{
+  size_t off;
+  uint32_t total_count = 0;
+  struct flash_device_s *dev = lookup_flash_device_by_id(fa_id);
+  const size_t sector_size = dev->mtdgeo.erasesize;
+  const struct flash_area *fa = fa = dev->fa_cfg;
+
+  return flash_area_get_sectors_fa(fa, count, sectors);
+}
+
 /****************************************************************************
  * Name: flash_area_id_from_multi_image_slot
  *