/*******************************************************************************
* mvFlashInit - Initialize a flash descriptor structure.
*
* DESCRIPTION:
* This function intialize flash info struct with specified flash
* parameters. This structure is used to identify the target flash the
* function refers to. This allow the use of the same API for multiple
* flash devices.
*
*
* INPUT:
* pFlash->baseAddr - Flash base address.
* pFlash->busWidth - Flash bus width (8, 16, 32 bit).
* pFlash->devWidth - Flash device width (8 or 16 bit).
*
* OUTPUT:
* pFlash - Flash identifier structure.
*
* RETURN:
* 32bit describing flash size.
* In case of any error, it returns 0.
*
*******************************************************************************/
MV_U32 mvFlashInit(MV_FLASH_INFO *pFlash)
{
MV_U32 manu = 0, id = 0;
if(NULL == pFlash)
return 0;
DB(mvOsPrintf("Flash: mvFlashInit base 0x%x devW %d busW %d\n",
pFlash->baseAddr, pFlash->devWidth, pFlash->busWidth));
/* must init first sector base, before calling flashCmdSet */
pFlash->sector[0].baseOffs = 0;
/* reset flash 0xf0(AMD) 0xff (Intel) */
flashCmdSet(pFlash, 0, 0, 0xf0);
flashCmdSet(pFlash, 0, 0, 0xff);
/* Write auto select command: read Manufacturer ID */
/* AMD seq is: 0x555 0xAA -> 0x2AA 0x55 -> 0x555 0x90 */
/* INTEL seq is dc 0x90 */
flashCmdSet(pFlash, 0x555, 0, 0xAA);
flashCmdSet(pFlash, 0x2AA, 0, 0x55);
flashCmdSet(pFlash, 0x555, 0, 0x90);
/* get flash Manufactor and Id */
manu = flashBusWidthRd(pFlash, mvFlashBaseAddrGet(pFlash));
id = flashBusWidthRd(pFlash, flashAddrExt(pFlash, 1, 0));
/* check if this flash is Supported, and Init the pFlash flash feild */
if( MV_OK != flashStructGet(pFlash, manu, id ) )
{
mvOsPrintf("%s: Flash ISN'T supported: manufactor-0x%x, id-0x%x\n",
__FUNCTION__, manu, id);
return 0;
}
/* Init pFlash sectors */
if(MV_OK != flashSecsInit(pFlash))
{
mvOsPrintf("Flash: ERROR mvFlashInit flashSecsInit failed \n");
return 0;
}
/* print all flash information */
DB(flashPrint(pFlash));
/* reset the Flash */
flashReset(pFlash);
return mvFlashSizeGet(pFlash);
}
/*******************************************************************************
* mvFlashInit - Initialize a flash descriptor structure.
*
* DESCRIPTION:
* This function intialize flash info struct with specified flash
* parameters. This structure is used to identify the target flash the
* function refers to. This allow the use of the same API for multiple
* flash devices.
*
*
* INPUT:
* pFlash->baseAddr - Flash base address.
* pFlash->busWidth - Flash bus width (8, 16, 32 bit).
* pFlash->devWidth - Flash device width (8 or 16 bit).
*
* OUTPUT:
* pFlash - Flash identifier structure.
*
* RETURN:
* 32bit describing flash size.
* In case of any error, it returns 0.
*
*******************************************************************************/
MV_U32 mvFlashInit(MV_FLASH_INFO *pFlash)
{
MV_U32 manu = 0, id = 0;
if(NULL == pFlash)
return 0;
DB(mvOsOutput("Flash: mvFlashInit base 0x%x devW %d busW %d\n",
pFlash->baseAddr, pFlash->devWidth, pFlash->busWidth));
/* must init first sector base, before calling flashCmdSet */
pFlash->sector[0].baseOffs = 0;
/* reset flash 0xf0(AMD) 0xff (Intel) */
flashCmdSet(pFlash, 0, 0, 0xf0);
flashCmdSet(pFlash, 0, 0, 0xff);
/* Write auto select command: read Manufacturer ID */
/* AMD seq is: 0x555 0xAA -> 0x2AA 0x55 -> 0x555 0x90 */
/* INTEL seq is dc 0x90 */
flashCmdSet(pFlash, 0x555, 0, 0xAA);
flashCmdSet(pFlash, 0x2AA, 0, 0x55);
flashCmdSet(pFlash, 0x555, 0, 0x90);
/* Write auto select command: read Manufacturer ID */
/* SST seq is: 0x5555 0xAA -> 0x2AAA 0x55 -> 0x5555 0x90 */
flashCmdSet(pFlash, 0x5555, 0, 0xAA);
flashCmdSet(pFlash, 0x2AAA, 0, 0x55);
flashCmdSet(pFlash, 0x5555, 0, 0x90);
DB(mvOsOutput("Flash: mvFlashInit base 0x%x devW %d busW %d\n",
pFlash->baseAddr, pFlash->devWidth, pFlash->busWidth));
/* get flash Manufactor and Id */
manu = flashBusWidthRd(pFlash, mvFlashBaseAddrGet(pFlash));
DB(mvOsOutput("Flash: mvFlashInit base 0x%x devW %d busW %d\n",
pFlash->baseAddr, pFlash->devWidth, pFlash->busWidth));
/* Some Micron flashes don't use A0 address for Identifier and
Lock information, so in order to read Identifier and lock information
properly we will do the following workarround:
If our device width is 1 (x8) then if address 0 equal to address 1
and address 2 equal to address 3 ,then we have this case (A0 is not used)
and then we will issue the address without A0 to read the Identifier and
lock information properly*/
DB(mvOsOutput("Flash: mvFlashInit base 0x%x devW %d busW %d\n",
pFlash->baseAddr, pFlash->devWidth, pFlash->busWidth));
if ((pFlash->devWidth == 1) &&
((flashBusWidthRd(pFlash, flashAddrExt(pFlash, 0, 0)) ==
flashBusWidthRd(pFlash, flashAddrExt(pFlash, 1, 0)))&&
(flashBusWidthRd(pFlash, flashAddrExt(pFlash, 2, 0)) ==
flashBusWidthRd(pFlash, flashAddrExt(pFlash, 3, 0)))))
{
id = flashBusWidthRd(pFlash, flashAddrExt(pFlash, 2, 0));
} else id = flashBusWidthRd(pFlash, flashAddrExt(pFlash, 1, 0));
/* check if this flash is Supported, and Init the pFlash flash feild */
if( MV_OK != flashStructGet(pFlash, manu, id ) )
{
mvOsPrintf("%s: Flash ISN'T supported: manufactor-0x%x, id-0x%x\n",
__FUNCTION__, manu, id);
return 0;
}
DB(mvOsOutput("Flash: mvFlashInit base 0x%x devW %d busW %d\n",
pFlash->baseAddr, pFlash->devWidth, pFlash->busWidth));
/* Init pFlash sectors */
if(MV_OK != flashSecsInit(pFlash))
{
mvOsPrintf("Flash: ERROR mvFlashInit flashSecsInit failed \n");
return 0;
}
DB(mvOsOutput("Flash: mvFlashInit base 0x%x devW %d busW %d\n",
pFlash->baseAddr, pFlash->devWidth, pFlash->busWidth));
/* print all flash information */
DB(flashPrint(pFlash));
/* reset the Flash */
flashReset(pFlash);
DB(mvOsOutput("Flash: mvFlashInit base 0x%x devW %d busW %d\n",
pFlash->baseAddr, pFlash->devWidth, pFlash->busWidth));
return mvFlashSizeGet(pFlash);
}
