flash.c File Reference

#include "../inc/hw_types.h"
#include "../inc/hw_ccfg.h"
#include "../inc/hw_fcfg2.h"
#include "flash.h"
#include "chipinfo.h"

Macros
#define	CCFG_OFFSET_SECURITY   CCFG_O_BL_CONFIG
#define	CCFG_OFFSET_SECT_PROT   CCFG_O_CCFG_WEPROT_31_0_BY2K
#define	CCFG_SIZE_SECURITY   0x00000018
#define	CCFG_SIZE_SECT_PROT   0x00000004

Typedefs
typedef uint32_t(*	FlashPrgPointer_t) (uint8_t *, uint32_t, uint32_t)
typedef uint32_t(*	FlashSectorErasePointer_t) (uint32_t)

Functions
static void	IssueFsmCommand (tFlashStateCommandsType eCommand)
void	FlashPowerModeSet (uint32_t ui32PowerMode, uint32_t ui32BankGracePeriod, uint32_t ui32PumpGracePeriod)
	Set power mode. More...
uint32_t	FlashPowerModeGet (void)
	Get current configured power mode. More...
void	FlashProtectionSet (uint32_t ui32SectorAddress, uint32_t ui32ProtectMode)
	Set sector protection. More...
uint32_t	FlashProtectionGet (uint32_t ui32SectorAddress)
	Get sector protection. More...
uint32_t	FlashProtectionSave (uint32_t ui32SectorAddress)
	Save sector protection to make it permanent. More...
uint32_t	FlashSectorErase (uint32_t ui32SectorAddress)
	Erase a flash sector. More...
static uint32_t	FlashCopyOneFlashWordToHW (uint8_t *pBuf, uint32_t FlashAddr, uint32_t startIdx, uint32_t endIdx)
static uint32_t	FlashCopyMultiFlashWordToHW (uint8_t *pBuf, uint32_t FlashAddr, uint32_t numBytes)
uint32_t	FlashProgram (uint8_t *pui8DataBuffer, uint32_t ui32Address, uint32_t ui32Count)
	Programs unprotected flash sectors in the main bank. More...
uint32_t	FlashProgram4X (uint8_t *pui8DataBuffer, uint32_t ui32Address, uint32_t ui32Count)
uint32_t	FlashProgramNowait (uint32_t ui32StartAddress, uint8_t *pui8DataBuffer, uint8_t ui8NoOfBytes)
	Starts programming within unprotected main bank flash sector and returns. More...
bool	FlashEfuseReadRow (uint32_t *pui32EfuseData, uint32_t ui32RowAddress)
	Reads efuse data from specified row. More...
void	FlashDisableSectorsForWrite (void)
	Disables all sectors for erase and programming on the active bank. More...

Variables
const uint8_t	g_pui8CcfgDefaultSec []

Macro Definition Documentation

CCFG_OFFSET_SECT_PROT

#define CCFG_OFFSET_SECT_PROT   CCFG_O_CCFG_WEPROT_31_0_BY2K

CCFG_OFFSET_SECURITY

#define CCFG_OFFSET_SECURITY   CCFG_O_BL_CONFIG

Referenced by FlashSectorErase().

CCFG_SIZE_SECT_PROT

#define CCFG_SIZE_SECT_PROT   0x00000004

Referenced by FlashProtectionSave().

CCFG_SIZE_SECURITY

#define CCFG_SIZE_SECURITY   0x00000018

Referenced by FlashSectorErase().

Typedef Documentation

FlashPrgPointer_t

typedef uint32_t(* FlashPrgPointer_t) (uint8_t *, uint32_t, uint32_t)

FlashSectorErasePointer_t

typedef uint32_t(* FlashSectorErasePointer_t) (uint32_t)

Function Documentation

FlashCopyMultiFlashWordToHW()

static uint32_t FlashCopyMultiFlashWordToHW ( uint8_t *  pBuf, uint32_t  FlashAddr, uint32_t  numBytes  )

static

Referenced by FlashProgram(), and FlashProgram4X().

{
    uint32_t wordIdx;
    uint32_t flashdata=0;
    uint32_t cmdDataOffset;

    // double check the Flash address is 32 or 64 byte aligned

    /* based on the Flash addr to figure the cdata index register
       1. convert the system byte address to flash word address (>>4)
       2. based on the flash word address to find command data index (last 2 bit)
       3. cmddataOffset will be 0,32(0x20), 64 (0x40)
    */
    cmdDataOffset = ((FlashAddr >> 4) & 0x3 ) << 4 ;

    // in 2X/4X program mode, Byte Enable register is required
    // to set to 0xFFFF
    HWREG(NVMNW_BASE + NVMNW_O_CMDBYTEN ) = 0xFFFF;

    // build data buffer from byte address to Flash word address
    for (wordIdx = 0; wordIdx < (numBytes >> 2); wordIdx++)
    {
        flashdata = ( pBuf[3] << 24 ) |
                    ( pBuf[2] << 16 ) |
                    ( pBuf[1] << 8  ) |
                    ( pBuf[0] ) ;
        HWREG(NVMNW_BASE + NVMNW_O_CMDDATA0 + cmdDataOffset + (4 * wordIdx)) = flashdata ;

        /* next 4 data byte */
        pBuf += 4;
    }

    return (numBytes);
}

FlashCopyOneFlashWordToHW()

static uint32_t FlashCopyOneFlashWordToHW ( uint8_t *  pBuf, uint32_t  FlashAddr, uint32_t  startIdx, uint32_t  endIdx  )

static

Referenced by FlashProgram(), and FlashProgram4X().

{
    uint32_t dataBuf[FLASHWORDSIZE_ONE/4];
    uint32_t i,wordIdx,byteIdx;
    uint32_t byteEnableVal =0;
    uint32_t cmdDataOffset;

    // init the dataBuf to zero
    for (i = 0; i < (FLASHWORDSIZE_ONE/4); i++)
    {
        dataBuf[i] = 0x00000000;
    }

    // build data buffer from byte address to Flash word address
    // build the byte enable value
    for (i = startIdx; i <= endIdx; i++)
    {
        byteEnableVal |= 1 << i ;
        wordIdx = i >> FLASHWORD_SHIFTBIT ;
        byteIdx = i & FLASHWORD_MASKBIT ;

        dataBuf[wordIdx] |= (*pBuf) << ( 8 * byteIdx );
        /* next data byte */
        pBuf++;
    }

    /* based on the Flash addr to figure the cdata index register
       1. convert the system byte address to flash word address (>>4)
       2. based on the flash word address to find command data index (last 2 bit)
       3. cmddataOffset will be 0,16(0x10),32(0x20),48(0x30)
    */
    cmdDataOffset = ((FlashAddr >> 4) & 0x3 ) << 4 ;

    /* write the data buffer to Flash Command data buffer */
    HWREG(NVMNW_BASE + NVMNW_O_CMDDATA0 + cmdDataOffset ) = dataBuf[0];
    HWREG(NVMNW_BASE + NVMNW_O_CMDDATA1 + cmdDataOffset ) = dataBuf[1];
    HWREG(NVMNW_BASE + NVMNW_O_CMDDATA2 + cmdDataOffset ) = dataBuf[2];
    HWREG(NVMNW_BASE + NVMNW_O_CMDDATA3 + cmdDataOffset ) = dataBuf[3];

    /* update the byte enable register (mask) */
    HWREG(NVMNW_BASE + NVMNW_O_CMDBYTEN ) = byteEnableVal;

    return (endIdx - startIdx + 1);
}

IssueFsmCommand()

static void IssueFsmCommand ( tFlashStateCommandsType  eCommand )

static

Issues a command to the Flash State Machine.

Parameters

eCommand

specifies the FSM command.

Issues a command to the Flash State Machine.

Returns

None

Referenced by FlashProgram(), FlashProgram4X(), and FlashSectorErase().

{
    // Check the arguments.
    ASSERT(
        eCommand == FAPI_ERASE_SECTOR    || eCommand == FAPI_ERASE_BANK ||
        eCommand == FAPI_PROGRAM_FOURWORD || eCommand == FAPI_CLEAR_STATUS ||
        eCommand == FAPI_PROGRAM_ONEWORD  || eCommand == FAPI_PROGRAM_TWOWORD );

    // write to NW COMMAND Type register
    HWREG(NVMNW_BASE + NVMNW_O_CMDTYPE) = eCommand;

    // write to NW Execute register
    HWREG(NVMNW_BASE + NVMNW_O_CMDEXEC) = NVMNW_CMDEXEC_VAL_EXECUTE;

}

Variable Documentation

g_pui8CcfgDefaultSec

const uint8_t g_pui8CcfgDefaultSec[]

Initial value:

= {0xFF, 0xFF, 0xFF, 0xC5,
                                        0xFF, 0xFF, 0xFF, 0xFF,
                                        0xFF, 0xFF, 0xFF, 0xFF,
                                        0xC5, 0xC5, 0xC5, 0xFF,
                                        0xC5, 0xC5, 0xC5, 0xFF,
                                        0xC5, 0xC5, 0xC5, 0xFF
                                       }

Referenced by FlashSectorErase().