mirror of https://github.com/acidanthera/audk.git
769 lines
20 KiB
C
769 lines
20 KiB
C
/** @file
|
|
|
|
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include "Flash.h"
|
|
|
|
NAND_PART_INFO_TABLE gNandPartInfoTable[1] = {
|
|
{ 0x2C, 0xBA, 17, 11 }
|
|
};
|
|
|
|
NAND_FLASH_INFO *gNandFlashInfo = NULL;
|
|
UINT8 *gEccCode;
|
|
UINTN gNum512BytesChunks = 0;
|
|
|
|
//
|
|
|
|
// Device path for SemiHosting. It contains our autogened Caller ID GUID.
|
|
|
|
//
|
|
|
|
typedef struct {
|
|
|
|
VENDOR_DEVICE_PATH Guid;
|
|
|
|
EFI_DEVICE_PATH_PROTOCOL End;
|
|
|
|
} FLASH_DEVICE_PATH;
|
|
|
|
|
|
|
|
FLASH_DEVICE_PATH gDevicePath = {
|
|
{
|
|
{ HARDWARE_DEVICE_PATH, HW_VENDOR_DP, { sizeof (VENDOR_DEVICE_PATH), 0 } },
|
|
EFI_CALLER_ID_GUID
|
|
},
|
|
{ END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE, { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0} }
|
|
};
|
|
|
|
|
|
|
|
//Actual page address = Column address + Page address + Block address.
|
|
UINTN
|
|
GetActualPageAddressInBytes (
|
|
UINTN BlockIndex,
|
|
UINTN PageIndex
|
|
)
|
|
{
|
|
//BlockAddressStart = Start of the Block address in actual NAND
|
|
//PageAddressStart = Start of the Page address in actual NAND
|
|
return ((BlockIndex << gNandFlashInfo->BlockAddressStart) + (PageIndex << gNandFlashInfo->PageAddressStart));
|
|
}
|
|
|
|
VOID
|
|
NandSendCommand (
|
|
UINT8 Command
|
|
)
|
|
{
|
|
MmioWrite16(GPMC_NAND_COMMAND_0, Command);
|
|
}
|
|
|
|
VOID
|
|
NandSendAddress (
|
|
UINT8 Address
|
|
)
|
|
{
|
|
MmioWrite16(GPMC_NAND_ADDRESS_0, Address);
|
|
}
|
|
|
|
UINT16
|
|
NandReadStatus (
|
|
VOID
|
|
)
|
|
{
|
|
//Send READ STATUS command
|
|
NandSendCommand(READ_STATUS_CMD);
|
|
|
|
//Read status.
|
|
return MmioRead16(GPMC_NAND_DATA_0);
|
|
}
|
|
|
|
VOID
|
|
NandSendAddressCycles (
|
|
UINTN Address
|
|
)
|
|
{
|
|
//Column address
|
|
NandSendAddress(Address & 0xff);
|
|
Address >>= 8;
|
|
|
|
//Column address
|
|
NandSendAddress(Address & 0x07);
|
|
Address >>= 3;
|
|
|
|
//Page and Block address
|
|
NandSendAddress(Address & 0xff);
|
|
Address >>= 8;
|
|
|
|
//Block address
|
|
NandSendAddress(Address & 0xff);
|
|
Address >>= 8;
|
|
|
|
//Block address
|
|
NandSendAddress(Address & 0x01);
|
|
}
|
|
|
|
VOID
|
|
GpmcInit (
|
|
VOID
|
|
)
|
|
{
|
|
//Enable Smart-idle mode.
|
|
MmioWrite32 (GPMC_SYSCONFIG, SMARTIDLEMODE);
|
|
|
|
//Set IRQSTATUS and IRQENABLE to the reset value
|
|
MmioWrite32 (GPMC_IRQSTATUS, 0x0);
|
|
MmioWrite32 (GPMC_IRQENABLE, 0x0);
|
|
|
|
//Disable GPMC timeout control.
|
|
MmioWrite32 (GPMC_TIMEOUT_CONTROL, TIMEOUTDISABLE);
|
|
|
|
//Set WRITEPROTECT bit to enable write access.
|
|
MmioWrite32 (GPMC_CONFIG, WRITEPROTECT_HIGH);
|
|
|
|
//NOTE: Following GPMC_CONFIGi_0 register settings are taken from u-boot memory dump.
|
|
MmioWrite32 (GPMC_CONFIG1_0, DEVICETYPE_NAND | DEVICESIZE_X16);
|
|
MmioWrite32 (GPMC_CONFIG2_0, CSRDOFFTIME | CSWROFFTIME);
|
|
MmioWrite32 (GPMC_CONFIG3_0, ADVRDOFFTIME | ADVWROFFTIME);
|
|
MmioWrite32 (GPMC_CONFIG4_0, OEONTIME | OEOFFTIME | WEONTIME | WEOFFTIME);
|
|
MmioWrite32 (GPMC_CONFIG5_0, RDCYCLETIME | WRCYCLETIME | RDACCESSTIME | PAGEBURSTACCESSTIME);
|
|
MmioWrite32 (GPMC_CONFIG6_0, WRACCESSTIME | WRDATAONADMUXBUS | CYCLE2CYCLEDELAY | CYCLE2CYCLESAMECSEN);
|
|
MmioWrite32 (GPMC_CONFIG7_0, MASKADDRESS_128MB | CSVALID | BASEADDRESS);
|
|
}
|
|
|
|
EFI_STATUS
|
|
NandDetectPart (
|
|
VOID
|
|
)
|
|
{
|
|
UINT8 NandInfo = 0;
|
|
UINT8 PartInfo[5];
|
|
UINTN Index;
|
|
BOOLEAN Found = FALSE;
|
|
|
|
//Send READ ID command
|
|
NandSendCommand(READ_ID_CMD);
|
|
|
|
//Send one address cycle.
|
|
NandSendAddress(0);
|
|
|
|
//Read 5-bytes to idenfity code programmed into the NAND flash devices.
|
|
//BYTE 0 = Manufacture ID
|
|
//Byte 1 = Device ID
|
|
//Byte 2, 3, 4 = Nand part specific information (Page size, Block size etc)
|
|
for (Index = 0; Index < sizeof(PartInfo); Index++) {
|
|
PartInfo[Index] = MmioRead16(GPMC_NAND_DATA_0);
|
|
}
|
|
|
|
//Check if the ManufactureId and DeviceId are part of the currently supported nand parts.
|
|
for (Index = 0; Index < sizeof(gNandPartInfoTable)/sizeof(NAND_PART_INFO_TABLE); Index++) {
|
|
if (gNandPartInfoTable[Index].ManufactureId == PartInfo[0] && gNandPartInfoTable[Index].DeviceId == PartInfo[1]) {
|
|
gNandFlashInfo->BlockAddressStart = gNandPartInfoTable[Index].BlockAddressStart;
|
|
gNandFlashInfo->PageAddressStart = gNandPartInfoTable[Index].PageAddressStart;
|
|
Found = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (Found == FALSE) {
|
|
DEBUG ((EFI_D_ERROR, "Nand part is not currently supported. Manufacture id: %x, Device id: %x\n", PartInfo[0], PartInfo[1]));
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
//Populate NAND_FLASH_INFO based on the result of READ ID command.
|
|
gNandFlashInfo->ManufactureId = PartInfo[0];
|
|
gNandFlashInfo->DeviceId = PartInfo[1];
|
|
NandInfo = PartInfo[3];
|
|
|
|
if (PAGE_SIZE(NandInfo) == PAGE_SIZE_2K_VAL) {
|
|
gNandFlashInfo->PageSize = PAGE_SIZE_2K;
|
|
} else {
|
|
DEBUG ((EFI_D_ERROR, "Unknown Page size.\n"));
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
if (SPARE_AREA_SIZE(NandInfo) == SPARE_AREA_SIZE_64B_VAL) {
|
|
gNandFlashInfo->SparePageSize = SPARE_AREA_SIZE_64B;
|
|
} else {
|
|
DEBUG ((EFI_D_ERROR, "Unknown Spare area size.\n"));
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
if (BLOCK_SIZE(NandInfo) == BLOCK_SIZE_128K_VAL) {
|
|
gNandFlashInfo->BlockSize = BLOCK_SIZE_128K;
|
|
} else {
|
|
DEBUG ((EFI_D_ERROR, "Unknown Block size.\n"));
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
if (ORGANIZATION(NandInfo) == ORGANIZATION_X8) {
|
|
gNandFlashInfo->Organization = 0;
|
|
} else if (ORGANIZATION(NandInfo) == ORGANIZATION_X16) {
|
|
gNandFlashInfo->Organization = 1;
|
|
}
|
|
|
|
//Calculate total number of blocks.
|
|
gNandFlashInfo->NumPagesPerBlock = DivU64x32(gNandFlashInfo->BlockSize, gNandFlashInfo->PageSize);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
VOID
|
|
NandConfigureEcc (
|
|
VOID
|
|
)
|
|
{
|
|
//Define ECC size 0 and size 1 to 512 bytes
|
|
MmioWrite32 (GPMC_ECC_SIZE_CONFIG, (ECCSIZE0_512BYTES | ECCSIZE1_512BYTES));
|
|
}
|
|
|
|
VOID
|
|
NandEnableEcc (
|
|
VOID
|
|
)
|
|
{
|
|
//Clear all the ECC result registers and select ECC result register 1
|
|
MmioWrite32 (GPMC_ECC_CONTROL, (ECCCLEAR | ECCPOINTER_REG1));
|
|
|
|
//Enable ECC engine on CS0
|
|
MmioWrite32 (GPMC_ECC_CONFIG, (ECCENABLE | ECCCS_0 | ECC16B));
|
|
}
|
|
|
|
VOID
|
|
NandDisableEcc (
|
|
VOID
|
|
)
|
|
{
|
|
//Turn off ECC engine.
|
|
MmioWrite32 (GPMC_ECC_CONFIG, ECCDISABLE);
|
|
}
|
|
|
|
VOID
|
|
NandCalculateEcc (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN Index;
|
|
UINTN EccResultRegister;
|
|
UINTN EccResult;
|
|
|
|
//Capture 32-bit ECC result for each 512-bytes chunk.
|
|
//In our case PageSize is 2K so read ECC1-ECC4 result registers and
|
|
//generate total of 12-bytes of ECC code for the particular page.
|
|
|
|
EccResultRegister = GPMC_ECC1_RESULT;
|
|
|
|
for (Index = 0; Index < gNum512BytesChunks; Index++) {
|
|
|
|
EccResult = MmioRead32 (EccResultRegister);
|
|
|
|
//Calculate ECC code from 32-bit ECC result value.
|
|
//NOTE: Following calculation is not part of TRM. We got this information
|
|
//from Beagleboard mailing list.
|
|
gEccCode[Index * 3] = EccResult & 0xFF;
|
|
gEccCode[(Index * 3) + 1] = (EccResult >> 16) & 0xFF;
|
|
gEccCode[(Index * 3) + 2] = (((EccResult >> 20) & 0xF0) | ((EccResult >> 8) & 0x0F));
|
|
|
|
//Point to next ECC result register.
|
|
EccResultRegister += 4;
|
|
}
|
|
}
|
|
|
|
EFI_STATUS
|
|
NandReadPage (
|
|
IN UINTN BlockIndex,
|
|
IN UINTN PageIndex,
|
|
OUT VOID *Buffer,
|
|
OUT UINT8 *SpareBuffer
|
|
)
|
|
{
|
|
UINTN Address;
|
|
UINTN Index;
|
|
UINTN NumMainAreaWords = (gNandFlashInfo->PageSize/2);
|
|
UINTN NumSpareAreaWords = (gNandFlashInfo->SparePageSize/2);
|
|
UINT16 *MainAreaWordBuffer = Buffer;
|
|
UINT16 *SpareAreaWordBuffer = (UINT16 *)SpareBuffer;
|
|
UINTN Timeout = MAX_RETRY_COUNT;
|
|
|
|
//Generate device address in bytes to access specific block and page index
|
|
Address = GetActualPageAddressInBytes(BlockIndex, PageIndex);
|
|
|
|
//Send READ command
|
|
NandSendCommand(PAGE_READ_CMD);
|
|
|
|
//Send 5 Address cycles to access specific device address
|
|
NandSendAddressCycles(Address);
|
|
|
|
//Send READ CONFIRM command
|
|
NandSendCommand(PAGE_READ_CONFIRM_CMD);
|
|
|
|
//Poll till device is busy.
|
|
while (Timeout) {
|
|
if ((NandReadStatus() & NAND_READY) == NAND_READY) {
|
|
break;
|
|
}
|
|
Timeout--;
|
|
}
|
|
|
|
if (Timeout == 0) {
|
|
DEBUG ((EFI_D_ERROR, "Read page timed out.\n"));
|
|
return EFI_TIMEOUT;
|
|
}
|
|
|
|
//Reissue READ command
|
|
NandSendCommand(PAGE_READ_CMD);
|
|
|
|
//Enable ECC engine.
|
|
NandEnableEcc();
|
|
|
|
//Read data into the buffer.
|
|
for (Index = 0; Index < NumMainAreaWords; Index++) {
|
|
*MainAreaWordBuffer++ = MmioRead16(GPMC_NAND_DATA_0);
|
|
}
|
|
|
|
//Read spare area into the buffer.
|
|
for (Index = 0; Index < NumSpareAreaWords; Index++) {
|
|
*SpareAreaWordBuffer++ = MmioRead16(GPMC_NAND_DATA_0);
|
|
}
|
|
|
|
//Calculate ECC.
|
|
NandCalculateEcc();
|
|
|
|
//Turn off ECC engine.
|
|
NandDisableEcc();
|
|
|
|
//Perform ECC correction.
|
|
//Need to implement..
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
NandWritePage (
|
|
IN UINTN BlockIndex,
|
|
IN UINTN PageIndex,
|
|
OUT VOID *Buffer,
|
|
IN UINT8 *SpareBuffer
|
|
)
|
|
{
|
|
UINTN Address;
|
|
UINT16 *MainAreaWordBuffer = Buffer;
|
|
UINT16 *SpareAreaWordBuffer = (UINT16 *)SpareBuffer;
|
|
UINTN Index;
|
|
UINTN NandStatus;
|
|
UINTN Timeout = MAX_RETRY_COUNT;
|
|
|
|
//Generate device address in bytes to access specific block and page index
|
|
Address = GetActualPageAddressInBytes(BlockIndex, PageIndex);
|
|
|
|
//Send SERIAL DATA INPUT command
|
|
NandSendCommand(PROGRAM_PAGE_CMD);
|
|
|
|
//Send 5 Address cycles to access specific device address
|
|
NandSendAddressCycles(Address);
|
|
|
|
//Enable ECC engine.
|
|
NandEnableEcc();
|
|
|
|
//Data input from Buffer
|
|
for (Index = 0; Index < (gNandFlashInfo->PageSize/2); Index++) {
|
|
MmioWrite16(GPMC_NAND_DATA_0, *MainAreaWordBuffer++);
|
|
|
|
//After each write access, device has to wait to accept data.
|
|
//Currently we may not be programming proper timing parameters to
|
|
//the GPMC_CONFIGi_0 registers and we would need to figure that out.
|
|
//Without following delay, page programming fails.
|
|
gBS->Stall(1);
|
|
}
|
|
|
|
//Calculate ECC.
|
|
NandCalculateEcc();
|
|
|
|
//Turn off ECC engine.
|
|
NandDisableEcc();
|
|
|
|
//Prepare Spare area buffer with ECC codes.
|
|
SetMem(SpareBuffer, gNandFlashInfo->SparePageSize, 0xFF);
|
|
CopyMem(&SpareBuffer[ECC_POSITION], gEccCode, gNum512BytesChunks * 3);
|
|
|
|
//Program spare area with calculated ECC.
|
|
for (Index = 0; Index < (gNandFlashInfo->SparePageSize/2); Index++) {
|
|
MmioWrite16(GPMC_NAND_DATA_0, *SpareAreaWordBuffer++);
|
|
}
|
|
|
|
//Send PROGRAM command
|
|
NandSendCommand(PROGRAM_PAGE_CONFIRM_CMD);
|
|
|
|
//Poll till device is busy.
|
|
NandStatus = 0;
|
|
while (Timeout) {
|
|
NandStatus = NandReadStatus();
|
|
if ((NandStatus & NAND_READY) == NAND_READY) {
|
|
break;
|
|
}
|
|
Timeout--;
|
|
}
|
|
|
|
if (Timeout == 0) {
|
|
DEBUG ((EFI_D_ERROR, "Program page timed out.\n"));
|
|
return EFI_TIMEOUT;
|
|
}
|
|
|
|
//Bit0 indicates Pass/Fail status
|
|
if (NandStatus & NAND_FAILURE) {
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
NandEraseBlock (
|
|
IN UINTN BlockIndex
|
|
)
|
|
{
|
|
UINTN Address;
|
|
UINTN NandStatus;
|
|
UINTN Timeout = MAX_RETRY_COUNT;
|
|
|
|
//Generate device address in bytes to access specific block and page index
|
|
Address = GetActualPageAddressInBytes(BlockIndex, 0);
|
|
|
|
//Send ERASE SETUP command
|
|
NandSendCommand(BLOCK_ERASE_CMD);
|
|
|
|
//Send 3 address cycles to device to access Page address and Block address
|
|
Address >>= 11; //Ignore column addresses
|
|
|
|
NandSendAddress(Address & 0xff);
|
|
Address >>= 8;
|
|
|
|
NandSendAddress(Address & 0xff);
|
|
Address >>= 8;
|
|
|
|
NandSendAddress(Address & 0xff);
|
|
|
|
//Send ERASE CONFIRM command
|
|
NandSendCommand(BLOCK_ERASE_CONFIRM_CMD);
|
|
|
|
//Poll till device is busy.
|
|
NandStatus = 0;
|
|
while (Timeout) {
|
|
NandStatus = NandReadStatus();
|
|
if ((NandStatus & NAND_READY) == NAND_READY) {
|
|
break;
|
|
}
|
|
Timeout--;
|
|
gBS->Stall(1);
|
|
}
|
|
|
|
if (Timeout == 0) {
|
|
DEBUG ((EFI_D_ERROR, "Erase block timed out for Block: %d.\n", BlockIndex));
|
|
return EFI_TIMEOUT;
|
|
}
|
|
|
|
//Bit0 indicates Pass/Fail status
|
|
if (NandStatus & NAND_FAILURE) {
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
NandReadBlock (
|
|
IN UINTN StartBlockIndex,
|
|
IN UINTN EndBlockIndex,
|
|
OUT VOID *Buffer,
|
|
OUT VOID *SpareBuffer
|
|
)
|
|
{
|
|
UINTN BlockIndex;
|
|
UINTN PageIndex;
|
|
EFI_STATUS Status = EFI_SUCCESS;
|
|
|
|
for (BlockIndex = StartBlockIndex; BlockIndex <= EndBlockIndex; BlockIndex++) {
|
|
//For each block read number of pages
|
|
for (PageIndex = 0; PageIndex < gNandFlashInfo->NumPagesPerBlock; PageIndex++) {
|
|
Status = NandReadPage(BlockIndex, PageIndex, Buffer, SpareBuffer);
|
|
if (EFI_ERROR(Status)) {
|
|
return Status;
|
|
}
|
|
Buffer = ((UINT8 *)Buffer + gNandFlashInfo->PageSize);
|
|
}
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
NandWriteBlock (
|
|
IN UINTN StartBlockIndex,
|
|
IN UINTN EndBlockIndex,
|
|
OUT VOID *Buffer,
|
|
OUT VOID *SpareBuffer
|
|
)
|
|
{
|
|
UINTN BlockIndex;
|
|
UINTN PageIndex;
|
|
EFI_STATUS Status = EFI_SUCCESS;
|
|
|
|
for (BlockIndex = StartBlockIndex; BlockIndex <= EndBlockIndex; BlockIndex++) {
|
|
//Page programming.
|
|
for (PageIndex = 0; PageIndex < gNandFlashInfo->NumPagesPerBlock; PageIndex++) {
|
|
Status = NandWritePage(BlockIndex, PageIndex, Buffer, SpareBuffer);
|
|
if (EFI_ERROR(Status)) {
|
|
return Status;
|
|
}
|
|
Buffer = ((UINT8 *)Buffer + gNandFlashInfo->PageSize);
|
|
}
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
NandFlashReset (
|
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
|
IN BOOLEAN ExtendedVerification
|
|
)
|
|
{
|
|
UINTN BusyStall = 50; // microSeconds
|
|
UINTN ResetBusyTimeout = (1000000 / BusyStall); // 1 Second
|
|
|
|
//Send RESET command to device.
|
|
NandSendCommand(RESET_CMD);
|
|
|
|
//Wait for 1ms before we check status register.
|
|
gBS->Stall(1000);
|
|
|
|
//Check BIT#5 & BIT#6 in Status register to make sure RESET is done.
|
|
while ((NandReadStatus() & NAND_RESET_STATUS) != NAND_RESET_STATUS) {
|
|
|
|
//In case of extended verification, wait for extended amount of time
|
|
//to make sure device is reset.
|
|
if (ExtendedVerification) {
|
|
if (ResetBusyTimeout == 0) {
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
gBS->Stall(BusyStall);
|
|
ResetBusyTimeout--;
|
|
}
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
NandFlashReadBlocks (
|
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
|
IN UINT32 MediaId,
|
|
IN EFI_LBA Lba,
|
|
IN UINTN BufferSize,
|
|
OUT VOID *Buffer
|
|
)
|
|
{
|
|
UINTN NumBlocks;
|
|
UINTN EndBlockIndex;
|
|
EFI_STATUS Status;
|
|
UINT8 *SpareBuffer = NULL;
|
|
|
|
if (Buffer == NULL) {
|
|
Status = EFI_INVALID_PARAMETER;
|
|
goto exit;
|
|
}
|
|
|
|
if (Lba > LAST_BLOCK) {
|
|
Status = EFI_INVALID_PARAMETER;
|
|
goto exit;
|
|
}
|
|
|
|
if ((BufferSize % gNandFlashInfo->BlockSize) != 0) {
|
|
Status = EFI_BAD_BUFFER_SIZE;
|
|
goto exit;
|
|
}
|
|
|
|
NumBlocks = DivU64x32(BufferSize, gNandFlashInfo->BlockSize);
|
|
EndBlockIndex = ((UINTN)Lba + NumBlocks) - 1;
|
|
|
|
SpareBuffer = (UINT8 *)AllocatePool(gNandFlashInfo->SparePageSize);
|
|
if (SpareBuffer == NULL) {
|
|
Status = EFI_OUT_OF_RESOURCES;
|
|
goto exit;
|
|
}
|
|
|
|
//Read block
|
|
Status = NandReadBlock((UINTN)Lba, EndBlockIndex, Buffer, SpareBuffer);
|
|
if (EFI_ERROR(Status)) {
|
|
DEBUG((EFI_D_ERROR, "Read block fails: %x\n", Status));
|
|
goto exit;
|
|
}
|
|
|
|
exit:
|
|
if (SpareBuffer != NULL) {
|
|
FreePool (SpareBuffer);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
NandFlashWriteBlocks (
|
|
IN EFI_BLOCK_IO_PROTOCOL *This,
|
|
IN UINT32 MediaId,
|
|
IN EFI_LBA Lba,
|
|
IN UINTN BufferSize,
|
|
IN VOID *Buffer
|
|
)
|
|
{
|
|
UINTN BlockIndex;
|
|
UINTN NumBlocks;
|
|
UINTN EndBlockIndex;
|
|
EFI_STATUS Status;
|
|
UINT8 *SpareBuffer = NULL;
|
|
|
|
if (Buffer == NULL) {
|
|
Status = EFI_INVALID_PARAMETER;
|
|
goto exit;
|
|
}
|
|
|
|
if (Lba > LAST_BLOCK) {
|
|
Status = EFI_INVALID_PARAMETER;
|
|
goto exit;
|
|
}
|
|
|
|
if ((BufferSize % gNandFlashInfo->BlockSize) != 0) {
|
|
Status = EFI_BAD_BUFFER_SIZE;
|
|
goto exit;
|
|
}
|
|
|
|
NumBlocks = DivU64x32(BufferSize, gNandFlashInfo->BlockSize);
|
|
EndBlockIndex = ((UINTN)Lba + NumBlocks) - 1;
|
|
|
|
SpareBuffer = (UINT8 *)AllocatePool(gNandFlashInfo->SparePageSize);
|
|
if (SpareBuffer == NULL) {
|
|
Status = EFI_OUT_OF_RESOURCES;
|
|
goto exit;
|
|
}
|
|
|
|
// Erase block
|
|
for (BlockIndex = (UINTN)Lba; BlockIndex <= EndBlockIndex; BlockIndex++) {
|
|
Status = NandEraseBlock(BlockIndex);
|
|
if (EFI_ERROR(Status)) {
|
|
DEBUG((EFI_D_ERROR, "Erase block failed. Status: %x\n", Status));
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
// Program data
|
|
Status = NandWriteBlock((UINTN)Lba, EndBlockIndex, Buffer, SpareBuffer);
|
|
if (EFI_ERROR(Status)) {
|
|
DEBUG((EFI_D_ERROR, "Block write fails: %x\n", Status));
|
|
goto exit;
|
|
}
|
|
|
|
exit:
|
|
if (SpareBuffer != NULL) {
|
|
FreePool (SpareBuffer);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
NandFlashFlushBlocks (
|
|
IN EFI_BLOCK_IO_PROTOCOL *This
|
|
)
|
|
{
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
|
|
EFI_BLOCK_IO_MEDIA gNandFlashMedia = {
|
|
SIGNATURE_32('n','a','n','d'), // MediaId
|
|
FALSE, // RemovableMedia
|
|
TRUE, // MediaPresent
|
|
FALSE, // LogicalPartition
|
|
FALSE, // ReadOnly
|
|
FALSE, // WriteCaching
|
|
0, // BlockSize
|
|
2, // IoAlign
|
|
0, // Pad
|
|
0 // LastBlock
|
|
};
|
|
|
|
EFI_BLOCK_IO_PROTOCOL BlockIo =
|
|
{
|
|
EFI_BLOCK_IO_INTERFACE_REVISION, // Revision
|
|
&gNandFlashMedia, // *Media
|
|
NandFlashReset, // Reset
|
|
NandFlashReadBlocks, // ReadBlocks
|
|
NandFlashWriteBlocks, // WriteBlocks
|
|
NandFlashFlushBlocks // FlushBlocks
|
|
};
|
|
|
|
EFI_STATUS
|
|
NandFlashInitialize (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
gNandFlashInfo = (NAND_FLASH_INFO *)AllocateZeroPool (sizeof(NAND_FLASH_INFO));
|
|
|
|
//Initialize GPMC module.
|
|
GpmcInit();
|
|
|
|
//Reset NAND part
|
|
NandFlashReset(&BlockIo, FALSE);
|
|
|
|
//Detect NAND part and populate gNandFlashInfo structure
|
|
Status = NandDetectPart ();
|
|
if (EFI_ERROR(Status)) {
|
|
DEBUG((EFI_D_ERROR, "Nand part id detection failure: Status: %x\n", Status));
|
|
return Status;
|
|
}
|
|
|
|
//Count total number of 512Bytes chunk based on the page size.
|
|
if (gNandFlashInfo->PageSize == PAGE_SIZE_512B) {
|
|
gNum512BytesChunks = 1;
|
|
} else if (gNandFlashInfo->PageSize == PAGE_SIZE_2K) {
|
|
gNum512BytesChunks = 4;
|
|
} else if (gNandFlashInfo->PageSize == PAGE_SIZE_4K) {
|
|
gNum512BytesChunks = 8;
|
|
}
|
|
|
|
gEccCode = (UINT8 *)AllocatePool(gNum512BytesChunks * 3);
|
|
if (gEccCode == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
//Configure ECC
|
|
NandConfigureEcc ();
|
|
|
|
//Patch EFI_BLOCK_IO_MEDIA structure.
|
|
gNandFlashMedia.BlockSize = gNandFlashInfo->BlockSize;
|
|
gNandFlashMedia.LastBlock = LAST_BLOCK;
|
|
|
|
//Publish BlockIO.
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&ImageHandle,
|
|
&gEfiBlockIoProtocolGuid, &BlockIo,
|
|
&gEfiDevicePathProtocolGuid, &gDevicePath,
|
|
NULL
|
|
);
|
|
return Status;
|
|
}
|
|
|