-enum flash_image_op
-{
- flash_image_op_write = 0,
- flash_image_op_verify,
- flash_image_op_erase
-};
-
-extern int flash_register_commands(struct command_context_s *cmd_ctx);
-extern int flash_init(struct command_context_s *cmd_ctx);
-
-extern int flash_erase(target_t *target, u32 addr, u32 length);
-extern int flash_image_operation(target_t *target, image_t *image, u32 *written, char **error_str, int *failed, enum flash_image_op op);
-
-extern flash_bank_t *get_flash_bank_by_num(int num);
-extern flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr);
-
-#define ERROR_FLASH_BANK_INVALID (-900)
-#define ERROR_FLASH_SECTOR_INVALID (-901)
-#define ERROR_FLASH_OPERATION_FAILED (-902)
-#define ERROR_FLASH_DST_OUT_OF_BANK (-903)
-#define ERROR_FLASH_DST_BREAKS_ALIGNMENT (-904)
-#define ERROR_FLASH_BUSY (-905)
-#define ERROR_FLASH_SECTOR_NOT_ERASED (-906)
-#define ERROR_FLASH_BANK_NOT_PROBED (-907)
+/// Registers the 'flash' subsystem commands
+int flash_register_commands(struct command_context_s *cmd_ctx);
+/// Initializes the 'flash' subsystem drivers
+int flash_init_drivers(struct command_context_s *cmd_ctx);
+
+/**
+ * Erases @a length bytes in the @a target flash, starting at @a addr.
+ * @returns ERROR_OK if successful; otherwise, an error code.
+ */
+int flash_erase_address_range(struct target_s *target,
+ uint32_t addr, uint32_t length);
+/**
+ * Writes @a image into the @a target flash. The @a written parameter
+ * will contain the
+ * @param target The target with the flash to be programmed.
+ * @param image The image that will be programmed to flash.
+ * @param written On return, contains the number of bytes written.
+ * @param erase If non-zero, indicates the flash driver should first
+ * erase the corresponding banks or sectors before programming.
+ * @returns ERROR_OK if successful; otherwise, an error code.
+ */
+int flash_write(struct target_s *target,
+ struct image_s *image, uint32_t *written, int erase);
+/**
+ * Forces targets to re-examine their erase/protection state.
+ * This routine must be called when the system may modify the status.
+ */
+void flash_set_dirty(void);
+/// @returns The number of flash banks currently defined.
+int flash_get_bank_count(void);
+/**
+ * Provides default erased-bank check handling. Checks to see if
+ * the flash driver knows they are erased; if things look uncertain,
+ * this routine will call default_flash_mem_blank_check() to confirm.
+ * @returns ERROR_OK if successful; otherwise, an error code.
+ */
+int default_flash_blank_check(struct flash_bank_s *bank);
+/**
+ * Provides a default blank flash memory check. Ensures the contents
+ * of the given bank have truly been erased.
+ * @param bank The flash bank.
+ * @returns ERROR_OK if successful; otherwise, an error code.
+ */
+int default_flash_mem_blank_check(struct flash_bank_s *bank);
+
+/**
+ * Returns a flash bank by the specified flash_bank_s bank_number, @a num.
+ * @param num The flash bank number.
+ * @returns A flash_bank_t for flash bank @a num, or NULL
+ */
+flash_bank_t *get_flash_bank_by_num(int num);
+/**
+ * Retreives @a bank from a command argument, reporting errors parsing
+ * the bank identifier or retreiving the specified bank.
+ * @param cmd_ctx The command context for reporting errors.
+ * @param str The string containing the bank identifier.
+ * @param bank On output, contians a pointer to the bank or NULL.
+ * @returns ERROR_OK on success, or an error indicating the problem.
+ */
+int flash_command_get_bank_by_num(struct command_context_s *cmd_ctx,
+ const char *str, flash_bank_t **bank);
+/**
+ * Returns the flash bank like get_flash_bank_by_num(), without probing.
+ * @param num The flash bank number.
+ * @returns A flash_bank_t for flash bank @a num, or NULL.
+ */
+flash_bank_t *get_flash_bank_by_num_noprobe(int num);
+/**
+ * Returns the flash bank located at a specified address.
+ * @param target The target, presumed to contain one or more banks.
+ * @param addr An address that is within the range of the bank.
+ * @returns The flash_bank_t located at @a addr, or NULL.
+ */
+flash_bank_t *get_flash_bank_by_addr(struct target_s *target, uint32_t addr);
+
+#define ERROR_FLASH_BANK_INVALID (-900)
+#define ERROR_FLASH_SECTOR_INVALID (-901)
+#define ERROR_FLASH_OPERATION_FAILED (-902)
+#define ERROR_FLASH_DST_OUT_OF_BANK (-903)
+#define ERROR_FLASH_DST_BREAKS_ALIGNMENT (-904)
+#define ERROR_FLASH_BUSY (-905)
+#define ERROR_FLASH_SECTOR_NOT_ERASED (-906)
+#define ERROR_FLASH_BANK_NOT_PROBED (-907)