source: rtems/bsps/arm/atsam/include/libchip/include/efc.h

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/**
 * \file
 *
 * \section Purpose
 *
 * Interface for configuration the Enhanced Embedded Flash Controller (EEFC)
 * peripheral.
 *
 * \section Usage
 *
 * -# Enable/disable %flash ready interrupt sources using EFC_EnableFrdyIt()
 *    and EFC_DisableFrdyIt().
 * -# Translates the given address into which EEFC, page and offset values
 *    for difference density %flash memory using EFC_TranslateAddress().
 * -# Computes the address of a %flash access given the EFC, page and offset
 *    for difference density %flash memory using EFC_ComputeAddress().
 * -# Start the executing command with EFC_PerformCommand()
 * -# Retrieve the current status of the EFC using EFC_GetStatus().
 * -# Retrieve the result of the last executed command with EFC_GetResult().
 */

#ifndef _EEFC_
#define _EEFC_

/*----------------------------------------------------------------------------
 *        Headers
 *----------------------------------------------------------------------------*/
#include "chip.h"

#include <stdint.h>

/*----------------------------------------------------------------------------
 *        Definitions
 *----------------------------------------------------------------------------*/
/* TODO: Temporary definition for missing symbol in header file */
#define IFLASH_SECTOR_SIZE      65536u


/* EFC command */
#define EFC_FCMD_GETD    0x00 /* Get Flash Descriptor */
#define EFC_FCMD_WP      0x01 /* Write page */
#define EFC_FCMD_WPL     0x02 /* Write page and lock */
#define EFC_FCMD_EWP     0x03 /* Erase page and write page */
#define EFC_FCMD_EWPL    0x04 /* Erase page and write page then lock */
#define EFC_FCMD_EA      0x05 /* Erase all */
#define EFC_FCMD_EPA     0x07 /* Erase pages */
#define EFC_FCMD_SLB     0x08 /* Set Lock Bit */
#define EFC_FCMD_CLB     0x09 /* Clear Lock Bit */
#define EFC_FCMD_GLB     0x0A /* Get Lock Bit */
#define EFC_FCMD_SFB     0x0B /* Set GPNVM Bit */
#define EFC_FCMD_CFB     0x0C /* Clear GPNVM Bit */
#define EFC_FCMD_GFB     0x0D /* Get GPNVM Bit */
#define EFC_FCMD_STUI    0x0E /* Start unique ID */
#define EFC_FCMD_SPUI    0x0F /* Stop unique ID */
#define EFC_FCMD_GCALB   0x10 /* Get CALIB Bit */
#define EFC_FCMD_ES      0x11 /* Erase Sector */
#define EFC_FCMD_WUS     0x12 /* Write User Signature */
#define EFC_FCMD_EUS     0x13 /* Erase User Signature */
#define EFC_FCMD_STUS    0x14 /* Start Read User Signature */
#define EFC_FCMD_SPUS    0x15 /* Stop Read User Signature */

/* The IAP function entry address */
#define CHIP_FLASH_IAP_ADDRESS  (0x00800008)

#ifdef __cplusplus
extern "C" {
#endif

/*----------------------------------------------------------------------------
 *        Exported functions
 *----------------------------------------------------------------------------*/

extern void EFC_EnableFrdyIt(Efc *efc);

extern void EFC_DisableFrdyIt(Efc *efc);

extern void EFC_SetWaitState(Efc *efc, uint8_t cycles);

extern void EFC_TranslateAddress(Efc **pEfc, uint32_t dwAddress,
                                                                  uint16_t *pwPage, uint16_t *pwOffset);

extern void EFC_ComputeAddress(Efc *efc, uint16_t wPage, uint16_t wOffset,
                                                                uint32_t *pdwAddress);

extern uint32_t EFC_PerformCommand(Efc *efc, uint32_t dwCommand,
                                                                        uint32_t dwArgument, uint32_t dwUseIAP);

extern uint32_t EFC_GetStatus(Efc *efc);

extern uint32_t EFC_GetResult(Efc *efc);

extern void EFC_SetFlashAccessMode(Efc *efc, uint32_t dwMode);

#ifdef __cplusplus
}
#endif

#endif /* #ifndef _EEFC_ */