flash.h

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/******************************************************************************
*  Filename:       flash.h
*  Revised:        2016-07-07 19:12:02 +0200 (Thu, 07 Jul 2016)
*  Revision:       46848
*
*  Description:    Defines and prototypes for the Flash driver.
*
*  Copyright (c) 2015 - 2016, Texas Instruments Incorporated
*  All rights reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions are met:
*
*  1) Redistributions of source code must retain the above copyright notice,
*     this list of conditions and the following disclaimer.
*
*  2) Redistributions in binary form must reproduce the above copyright notice,
*     this list of conditions and the following disclaimer in the documentation
*     and/or other materials provided with the distribution.
*
*  3) Neither the name of the ORGANIZATION nor the names of its contributors may
*     be used to endorse or promote products derived from this software without
*     specific prior written permission.
*
*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
*  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
*  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
*  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
*  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
*  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
*  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
*  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
*  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
*  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
*  POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************/

//*****************************************************************************
//
//
//*****************************************************************************

#ifndef __FLASH_H__
#define __FLASH_H__

//*****************************************************************************
//
// If building with a C++ compiler, make all of the definitions in this header
// have a C binding.
//
//*****************************************************************************
#ifdef __cplusplus
extern "C"
{
#endif

#include <stdbool.h>
#include <stdint.h>
#include <inc/hw_types.h>
#include <inc/hw_flash.h>
#include <inc/hw_memmap.h>
#include <inc/hw_ints.h>
#include <inc/hw_aon_sysctl.h>
#include <inc/hw_fcfg1.h>
#include <driverlib/interrupt.h>
#include <driverlib/debug.h>

//*****************************************************************************
//
// Support for DriverLib in ROM:
// This section renames all functions that are not "static inline", so that
// calling these functions will default to implementation in flash. At the end
// of this file a second renaming will change the defaults to implementation in
// ROM for available functions.
//
// To force use of the implementation in flash, e.g. for debugging:
// - Globally: Define DRIVERLIB_NOROM at project level
// - Per function: Use prefix "NOROM_" when calling the function
//
//*****************************************************************************
#if !defined(DOXYGEN)
    #define FlashPowerModeSet               NOROM_FlashPowerModeSet
    #define FlashPowerModeGet               NOROM_FlashPowerModeGet
    #define FlashProtectionSet              NOROM_FlashProtectionSet
    #define FlashProtectionGet              NOROM_FlashProtectionGet
    #define FlashProtectionSave             NOROM_FlashProtectionSave
    #define FlashSectorErase                NOROM_FlashSectorErase
    #define FlashProgram                    NOROM_FlashProgram
    #define FlashEfuseReadRow               NOROM_FlashEfuseReadRow
    #define FlashDisableSectorsForWrite     NOROM_FlashDisableSectorsForWrite
#endif

//*****************************************************************************
//
// Values that can be returned from the API functions
//
//*****************************************************************************
#define FAPI_STATUS_SUCCESS     0x00000000  // Function completed successfully
#define FAPI_STATUS_FSM_BUSY    0x00000001  // FSM is Busy
#define FAPI_STATUS_FSM_READY   0x00000002  // FSM is Ready
#define FAPI_STATUS_INCORRECT_DATABUFFER_LENGTH \
                                0x00000003  // Incorrect parameter value
#define FAPI_STATUS_FSM_ERROR   0x00000004  // Operation failed

//*****************************************************************************
//
// Values passed to FlashIntEnable(), FlashIntDisable() and FlashIntClear() and
// returned from FlashIntStatus().
//
//*****************************************************************************
#define FLASH_INT_FSM_DONE      0x00400000  // FSM Done Interrupt Mask
#define FLASH_INT_RV            0x00010000  // Read Verify error Interrupt Mask

//*****************************************************************************
//
// Values passed to FlashSetPowerMode() and returned from FlashGetPowerMode().
//
//*****************************************************************************
#define FLASH_PWR_ACTIVE_MODE   0x00000000
#define FLASH_PWR_OFF_MODE      0x00000001
#define FLASH_PWR_DEEP_STDBY_MODE \
                                0x00000002

//*****************************************************************************
//
// Values passed to FlashSetProtection() and returned from FlashGetProtection().
//
//*****************************************************************************
#define FLASH_NO_PROTECT        0x00000000 // Sector not protected
#define FLASH_WRITE_PROTECT     0x00000001 // Sector erase and program
                                           // protected

//*****************************************************************************
//
// Define used by the flash programming and erase functions
//
//*****************************************************************************
#define ADDR_OFFSET            (0x1F800000 - FLASHMEM_BASE)

//*****************************************************************************
//
// Define used for access to factory configuration area.
//
//*****************************************************************************
#define FCFG1_OFFSET           0x1000

//*****************************************************************************
//
// Define for the clock frequencey input to the flash module in number of MHz
//
//*****************************************************************************
#define FLASH_MODULE_CLK_FREQ  48

//*****************************************************************************
//
//
//*****************************************************************************
typedef enum
{
    FAPI_PROGRAM_DATA    = 0x0002, 
    FAPI_ERASE_SECTOR    = 0x0006, 
    FAPI_ERASE_BANK      = 0x0008, 
    FAPI_VALIDATE_SECTOR = 0x000E, 
    FAPI_CLEAR_STATUS    = 0x0010, 
    FAPI_PROGRAM_RESUME  = 0x0014, 
    FAPI_ERASE_RESUME    = 0x0016, 
    FAPI_CLEAR_MORE      = 0x0018, 
    FAPI_PROGRAM_SECTOR  = 0x0020, 
    FAPI_ERASE_OTP       = 0x0030  
} tFlashStateCommandsType;

//*****************************************************************************
//
// Defines for values written to the FLASH_O_FSM_WR_ENA register
//
//*****************************************************************************
#define FSM_REG_WRT_ENABLE     5
#define FSM_REG_WRT_DISABLE    2

//*****************************************************************************
//
// Defines for the bank power mode field the FLASH_O_FBFALLBACK register
//
//*****************************************************************************
#define FBFALLBACK_SLEEP       0
#define FBFALLBACK_DEEP_STDBY  1
#define FBFALLBACK_ACTIVE      3

//*****************************************************************************
//
// Defines for the bank grace periode and pump grace periode
//
//*****************************************************************************
#define FLASH_BAGP             0x14
#define FLASH_PAGP             0x14

//*****************************************************************************
//
// Defines used by the FlashProgramPattern() function
//
//*****************************************************************************
#define PATTERN_BITS           0x20  // No of bits in data pattern to program

//*****************************************************************************
//
// Defines for the FW flag bits in the FLASH_O_FWFLAG register
//
//*****************************************************************************
#define FW_WRT_TRIMMED         0x00000001

//*****************************************************************************
//
// Defines used by the flash programming functions
//
//*****************************************************************************
typedef volatile uint8_t tFwpWriteByte;
#define FWPWRITE_BYTE_ADDRESS ((tFwpWriteByte *)((FLASH_BASE + FLASH_O_FWPWRITE0)))

//*****************************************************************************
//
// Define for efuse instruction
//
//*****************************************************************************
#define DUMPWORD_INSTR         0x04

//*****************************************************************************
//
// Define for FSM command execution
//
//*****************************************************************************
#define FLASH_CMD_EXEC         0x15

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE uint32_t
FlashSectorSizeGet(void)
{
    uint32_t ui32SectorSizeInKbyte;

    ui32SectorSizeInKbyte = (HWREG(FLASH_BASE + FLASH_O_FCFG_B0_SSIZE0) &
                             FLASH_FCFG_B0_SSIZE0_B0_SECT_SIZE_M) >>
                            FLASH_FCFG_B0_SSIZE0_B0_SECT_SIZE_S;

    //
    // Return flash sector size in number of bytes.
    //
    return(ui32SectorSizeInKbyte * 1024);
}

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE uint32_t
FlashSizeGet(void)
{
    uint32_t ui32NoOfSectors;

    //
    // Get number of flash sectors
    //
    ui32NoOfSectors = (HWREG(FLASH_BASE + FLASH_O_FLASH_SIZE) &
                       FLASH_FLASH_SIZE_SECTORS_M) >>
                      FLASH_FLASH_SIZE_SECTORS_S;

    //
    // Return flash size in number of bytes
    //
    return(ui32NoOfSectors * FlashSectorSizeGet());
}

//*****************************************************************************
//
//
//*****************************************************************************
extern void FlashPowerModeSet(uint32_t ui32PowerMode,
                              uint32_t ui32BankGracePeriode,
                              uint32_t ui32PumpGracePeriode);

//*****************************************************************************
//
//
//*****************************************************************************
extern uint32_t FlashPowerModeGet(void);

//*****************************************************************************
//
//
//*****************************************************************************
extern void FlashProtectionSet(uint32_t ui32SectorAddress,
                               uint32_t ui32ProtectMode);

//*****************************************************************************
//
//
//*****************************************************************************
extern uint32_t FlashProtectionGet(uint32_t ui32SectorAddress);

//*****************************************************************************
//
//
//*****************************************************************************
extern uint32_t FlashProtectionSave(uint32_t ui32SectorAddress);

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE uint32_t
FlashCheckFsmForError(void)
{
    if(HWREG(FLASH_BASE + FLASH_O_FMSTAT) & FLASH_FMSTAT_CSTAT)
    {
        return(FAPI_STATUS_FSM_ERROR);
    }
    else
    {
        return(FAPI_STATUS_SUCCESS);
    }
}

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE uint32_t
FlashCheckFsmForReady(void)
{
    if(HWREG(FLASH_BASE + FLASH_O_STAT) & FLASH_STAT_BUSY)
    {
        return(FAPI_STATUS_FSM_BUSY);
    }
    else
    {
        return(FAPI_STATUS_FSM_READY);
    }
}

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE void
FlashIntRegister(void (*pfnHandler)(void))
{
    //
    // Register the interrupt handler.
    //
    IntRegister(INT_FLASH, pfnHandler);

    //
    // Enable the flash interrupt.
    //
    IntEnable(INT_FLASH);
}

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE void
FlashIntUnregister(void)
{
    //
    // Disable the interrupts.
    //
    IntDisable(INT_FLASH);

    //
    // Unregister the interrupt handler.
    //
    IntUnregister(INT_FLASH);
}

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE void
FlashIntEnable(uint32_t ui32IntFlags)
{
    HWREG(FLASH_BASE + FLASH_O_FSM_WR_ENA) = FSM_REG_WRT_ENABLE;
    HWREG(FLASH_BASE + FLASH_O_FSM_ST_MACHINE) |= ui32IntFlags;
    HWREG(FLASH_BASE + FLASH_O_FSM_WR_ENA) = FSM_REG_WRT_DISABLE;
}

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE void
FlashIntDisable(uint32_t ui32IntFlags)
{
    HWREG(FLASH_BASE + FLASH_O_FSM_WR_ENA) = FSM_REG_WRT_ENABLE;
    HWREG(FLASH_BASE + FLASH_O_FSM_ST_MACHINE) &= ~ui32IntFlags;
    HWREG(FLASH_BASE + FLASH_O_FSM_WR_ENA) = FSM_REG_WRT_DISABLE;
}

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE uint32_t
FlashIntStatus(void)
{
    uint32_t ui32IntFlags;

    ui32IntFlags = 0;

    //
    // Check if FSM_DONE interrupt status is set.
    //
    if(HWREG(FLASH_BASE + FLASH_O_FEDACSTAT) & FLASH_FEDACSTAT_FSM_DONE)
    {
        ui32IntFlags = FLASH_INT_FSM_DONE;
    }

    //
    // Check if RVF_INT interrupt status is set.
    //
    if(HWREG(FLASH_BASE + FLASH_O_FEDACSTAT) & FLASH_FEDACSTAT_RVF_INT)
    {
        ui32IntFlags |= FLASH_INT_RV;
    }

    return(ui32IntFlags);
}

//*****************************************************************************
//
//
//*****************************************************************************
__STATIC_INLINE void
FlashIntClear(uint32_t ui32IntFlags)
{
    uint32_t ui32TempVal;

    ui32TempVal = 0;

    if(ui32IntFlags & FLASH_INT_FSM_DONE)
    {
        ui32TempVal = FLASH_FEDACSTAT_FSM_DONE;
    }

    if(ui32IntFlags & FLASH_INT_RV)
    {
        ui32TempVal |= FLASH_FEDACSTAT_RVF_INT;
    }

    //
    // Clear the flash interrupt source.
    //
    HWREG(FLASH_BASE + FLASH_O_FEDACSTAT) = ui32TempVal;
}

//*****************************************************************************
//
//
//*****************************************************************************
extern uint32_t FlashSectorErase(uint32_t ui32SectorAddress);


//*****************************************************************************
//
//
//*****************************************************************************
extern uint32_t FlashProgram(uint8_t *pui8DataBuffer,
                             uint32_t ui32Address, uint32_t ui32Count);

//*****************************************************************************
//
//
//*****************************************************************************
extern bool FlashEfuseReadRow(uint32_t *pui32EfuseData,
                              uint32_t ui32RowAddress);

//*****************************************************************************
//
//
//*****************************************************************************
extern void FlashDisableSectorsForWrite(void);


//*****************************************************************************
//
// Support for DriverLib in ROM:
// Redirect to implementation in ROM when available.
//
//*****************************************************************************
#if !defined(DRIVERLIB_NOROM) && !defined(DOXYGEN)
    #include <driverlib/rom.h>
    #ifdef ROM_FlashPowerModeSet
        #undef  FlashPowerModeSet
        #define FlashPowerModeSet               ROM_FlashPowerModeSet
    #endif
    #ifdef ROM_FlashPowerModeGet
        #undef  FlashPowerModeGet
        #define FlashPowerModeGet               ROM_FlashPowerModeGet
    #endif
    #ifdef ROM_FlashProtectionSet
        #undef  FlashProtectionSet
        #define FlashProtectionSet              ROM_FlashProtectionSet
    #endif
    #ifdef ROM_FlashProtectionGet
        #undef  FlashProtectionGet
        #define FlashProtectionGet              ROM_FlashProtectionGet
    #endif
    #ifdef ROM_FlashProtectionSave
        #undef  FlashProtectionSave
        #define FlashProtectionSave             ROM_FlashProtectionSave
    #endif
    #ifdef ROM_FlashSectorErase
        #undef  FlashSectorErase
        #define FlashSectorErase                ROM_FlashSectorErase
    #endif
    #ifdef ROM_FlashProgram
        #undef  FlashProgram
        #define FlashProgram                    ROM_FlashProgram
    #endif
    #ifdef ROM_FlashEfuseReadRow
        #undef  FlashEfuseReadRow
        #define FlashEfuseReadRow               ROM_FlashEfuseReadRow
    #endif
    #ifdef ROM_FlashDisableSectorsForWrite
        #undef  FlashDisableSectorsForWrite
        #define FlashDisableSectorsForWrite     ROM_FlashDisableSectorsForWrite
    #endif
#endif

//*****************************************************************************
//
// Mark the end of the C bindings section for C++ compilers.
//
//*****************************************************************************
#ifdef __cplusplus
}
#endif

#endif // __FLASH_H__

//*****************************************************************************
//
//
//*****************************************************************************