/*
 * @brief Common IAP support functions
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2013
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licenser disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#ifndef __IAP_H_
#define __IAP_H_

#ifdef __cplusplus
extern "C" {
#endif

/** @defgroup IAP_18XX_43XX CHIP: LPC18xx/43xx Flash IAP driver
 * @ingroup CHIP_18XX_43XX_Drivers
 * @{
 */

/* IAP command definitions */
#define IAP_PREWRRITE_CMD           50	/*!< Prepare sector for write operation command */
#define IAP_WRISECTOR_CMD           51	/*!< Write Sector command */
#define IAP_ERSSECTOR_CMD           52	/*!< Erase Sector command */
#define IAP_BLANK_CHECK_SECTOR_CMD  53	/*!< Blank check sector */
#define IAP_REPID_CMD               54	/*!< Read PartID command */
#define IAP_READ_BOOT_CODE_CMD      55	/*!< Read Boot code version */
#define IAP_COMPARE_CMD             56	/*!< Compare two RAM address locations */
#define IAP_REINVOKE_ISP_CMD        57	/*!< Reinvoke ISP */
#define IAP_READ_UID_CMD            58	/*!< Read UID */
#define IAP_ERASE_PAGE_CMD          59	/*!< Erase page */
#define IAP_SET_BOOT_FLASH          60	/*!< Set active boot flash bank */
#define IAP_EEPROM_WRITE            61	/*!< EEPROM Write command */
#define IAP_EEPROM_READ             62	/*!< EEPROM READ command */

/* IAP response definitions */
#define IAP_CMD_SUCCESS             0	/*!< Command is executed successfully */
#define IAP_INVALID_COMMAND         1	/*!< Invalid command */
#define IAP_SRC_ADDR_ERROR          2	/*!< Source address is not on word boundary */
#define IAP_DST_ADDR_ERROR          3	/*!< Destination address is not on a correct boundary */
#define IAP_SRC_ADDR_NOT_MAPPED     4	/*!< Source address is not mapped in the memory map */
#define IAP_DST_ADDR_NOT_MAPPED     5	/*!< Destination address is not mapped in the memory map */
#define IAP_COUNT_ERROR             6	/*!< Byte count is not multiple of 4 or is not a permitted value */
#define IAP_INVALID_SECTOR          7	/*!< Sector number is invalid or end sector number is greater than start sector number */
#define IAP_SECTOR_NOT_BLANK        8	/*!< Sector is not blank */
#define IAP_SECTOR_NOT_PREPARED     9	/*!< Command to prepare sector for write operation was not executed */
#define IAP_COMPARE_ERROR           10	/*!< Source and destination data not equal */
#define IAP_BUSY                    11	/*!< Flash programming hardware interface is busy */
#define IAP_PARAM_ERROR             12	/*!< nsufficient number of parameters or invalid parameter */
#define IAP_ADDR_ERROR              13	/*!< Address is not on word boundary */
#define IAP_ADDR_NOT_MAPPED         14	/*!< Address is not mapped in the memory map */
#define IAP_CMD_LOCKED              15	/*!< Command is locked */
#define IAP_INVALID_CODE            16	/*!< Unlock code is invalid */
#define IAP_INVALID_BAUD_RATE       17	/*!< Invalid baud rate setting */
#define IAP_INVALID_STOP_BIT        18	/*!< Invalid stop bit setting */
#define IAP_CRP_ENABLED             19	/*!< Code read protection enabled */

/* IAP_ENTRY API function type */
typedef void (*IAP_ENTRY_T)(unsigned int[5], unsigned int[4]);

/**
 * @brief	Initialize IAP
 * @return	Status code to indicate the command is executed successfully or not
 */
uint8_t Chip_IAP_Init(void);

/**
 * @brief	Prepare sector for write operation
 * @param	strSector	: Start sector number
 * @param	endSector	: End sector number
 * @param	bankNum		: Flash Bank number
 * @return	Status code to indicate the command is executed successfully or not
 * @note	This command must be executed before executing "Copy RAM to flash"
 *			or "Erase Sector" command.
 *			The end sector must be greater than or equal to start sector number
 */
uint8_t Chip_IAP_PreSectorForReadWrite(uint32_t strSector, uint32_t endSector, uint8_t bankNum);

/**
 * @brief	Copy RAM to flash
 * @param	dstAdd		: Destination flash address where data bytes are to be written
 * @param	srcAdd		: Source flash address where data bytes are to be read
 * @param	byteswrt	: Number of bytes to be written
 * @return	Status code to indicate the command is executed successfully or not
 * @note	The addresses should be a 256 byte boundary and the number of bytes
 *			should be 256 | 512 | 1024 | 4096
 */
uint8_t Chip_IAP_CopyRamToFlash(uint32_t dstAdd, uint32_t *srcAdd, uint32_t byteswrt);

/**
 * @brief	Erase sector
 * @param	strSector	: Start sector number
 * @param	endSector	: End sector number
 * @param	bankNum		: Flash Bank number
 * @return	Status code to indicate the command is executed successfully or not
 * @note	The end sector must be greater than or equal to start sector number
 */
uint8_t Chip_IAP_EraseSector(uint32_t strSector, uint32_t endSector, uint8_t bankNum);

/**
 * @brief Blank check a sector or multiples sector of on-chip flash memory
 * @param	strSector	: Start sector number
 * @param	endSector	: End sector number
 * @param	bankNum		: Flash Bank number
 * @return	Offset of the first non blank word location if the status code is SECTOR_NOT_BLANK
 * @note	The end sector must be greater than or equal to start sector number
 */
// FIXME - There are two return value (result[0] & result[1]
// Result0:Offset of the first non blank word location if the Status Code is
// SECTOR_NOT_BLANK.
// Result1:Contents of non blank word location.
uint8_t Chip_IAP_BlankCheckSector(uint32_t strSector, uint32_t endSector, uint8_t bankNum);

/**
 * @brief	Read part identification number
 * @return	Part identification number
 */
uint32_t Chip_IAP_ReadPID(void);

/**
 * @brief	Read boot code version number
 * @return	Boot code version number
 */
uint8_t Chip_IAP_ReadBootCode(void);

/**
 * @brief	Compare the memory contents at two locations
 * @param	dstAdd		: Destination of the RAM address of data bytes to be compared
 * @param	srcAdd		: Source of the RAM address of data bytes to be compared
 * @param	bytescmp	: Number of bytes to be compared
 * @return	Offset of the first mismatch of the status code is COMPARE_ERROR
 * @note	The addresses should be a word boundary and number of bytes should be
 *			a multiply of 4
 */
uint8_t Chip_IAP_Compare(uint32_t dstAdd, uint32_t srcAdd, uint32_t bytescmp);

/**
 * @brief	IAP reinvoke ISP to invoke the bootloader in ISP mode
 * @return	none
 */
uint8_t Chip_IAP_ReinvokeISP(void);

/**
 * @brief	Read the unique ID
 * @param   uid[]    : Array of uint32_t with 4 elements to return the UID 
 * @return	Status code to indicate the command is executed successfully or not
 */
uint32_t Chip_IAP_ReadUID(uint32_t uid[]);

/**
 * @brief	Erase a page or multiple papers of on-chip flash memory
 * @param	strPage	: Start page number
 * @param	endPage	: End page number
 * @return	Status code to indicate the command is executed successfully or not
 * @note	The page number must be greater than or equal to start page number
 */
// FIXME - There are four return value
// Result0:The first 32-bit word (at the lowest address)
// Result1:The second 32-bit word.
// Result2:The third 32-bit word.
// Result3:The fourth 32-bit word.
uint8_t Chip_IAP_ErasePage(uint32_t strPage, uint32_t endPage);

/**
 * @brief	Set active boot flash bank
 * @param	bankNum	: Flash bank number
 * @return	Status code to indicate the command is executed successfully or not
 * @note	Enable booting from the indicated flash unit by inserting a valid
 *					signature and invalidating the other flash unit
 */
uint8_t Chip_IAP_SetBootFlashBank(uint8_t bankNum);

/**
 * @brief	Initialize the IAP command interface
 * @return	IAP_CMD_SUCCESS on success
 * @note	On parts with flash this API must be called before using IAP interface
 */
uint8_t Chip_IAP_init(void);

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* __IAP_H_ */






