//------------------------------------------------------------------------------
/// Writes the data and/or spare area of a nandflash page, after calculating an
/// ECC for the data area and storing it in the spare. If no data buffer is
/// provided, the ECC is read from the existing page spare. If no spare buffer
/// is provided, the spare area is still written with the ECC information
/// calculated on the data buffer.
/// Returns 0 if successful; otherwise returns an error code.
/// \param ecc Pointer to an EccNandFlash instance.
/// \param block Number of the block to write in.
/// \param page Number of the page to write inside the given block.
/// \param data Data area buffer, can be 0.
/// \param spare Spare area buffer, can be 0.
//------------------------------------------------------------------------------
unsigned char EccNandFlash_WritePage(
const struct EccNandFlash *ecc,
unsigned short block,
unsigned short page,
void *data,
void *spare)
{
unsigned char error;
unsigned char tmpSpare[NandCommon_MAXPAGESPARESIZE];
unsigned short pageDataSize = NandFlashModel_GetPageDataSize(MODEL(ecc));
unsigned short pageSpareSize = NandFlashModel_GetPageSpareSize(MODEL(ecc));
unsigned char hamming[NandCommon_MAXSPAREECCBYTES];
ASSERT(data || spare, "EccNandFlash_WritePage: At least one area must be written\n\r");
TRACE_DEBUG("EccNandFlash_WritePage(B#%d:P#%d)\n\r", block, page);
// Compute ECC on the new data, if provided
// If not provided, hamming code set to 0xFFFF.. to keep existing bytes
memset(hamming, 0xFF, NandCommon_MAXSPAREECCBYTES);
if (data) {
// Compute hamming code on data
Hamming_Compute256x(data, pageDataSize, hamming);
}
// Store code in spare buffer (if no buffer provided, use a temp. one)
if (!spare) {
spare = tmpSpare;
memset(spare, 0xFF, pageSpareSize);
}
NandSpareScheme_WriteEcc(NandFlashModel_GetScheme(MODEL(ecc)), spare, hamming);
// Perform write operation
error = RawNandFlash_WritePage(RAW(ecc), block, page, data, spare);
if (error) {
TRACE_ERROR("EccNandFlash_WritePage: Failed to write page\n\r");
return error;
}
return 0;
}
//------------------------------------------------------------------------------
/// Writes the data and/or spare area of a nandflash page, after calculating an
/// ECC for the data area and storing it in the spare. If no data buffer is
/// provided, the ECC is read from the existing page spare. If no spare buffer
/// is provided, the spare area is still written with the ECC information
/// calculated on the data buffer.
/// Returns 0 if successful; otherwise returns an error code.
/// \param ecc Pointer to an EccNandFlash instance.
/// \param block Number of the block to write in.
/// \param page Number of the page to write inside the given block.
/// \param data Data area buffer, can be 0.
/// \param spare Spare area buffer, can be 0.
//------------------------------------------------------------------------------
unsigned char EccNandFlash_WritePage(
struct EccNandFlash *ecc,
unsigned short block,
unsigned short page,
void *data,
void *spare)
{
unsigned char error;
unsigned short pageDataSize = NandFlashModel_GetPageDataSize(MODEL(ecc));
unsigned short pageSpareSize = NandFlashModel_GetPageSpareSize(MODEL(ecc));
unsigned char *pSpareBuffer = RawNandFlash_GetSpareBuffer(RAW(ecc));
ASSERT(data || spare, "EccNandFlash_WritePage: At least one area must be written\n\r");
TRACE_DEBUG("EccNandFlash_WritePage(B#%d:P#%d)\n\r", block, page);
#ifndef HARDWARE_ECC
// Compute ECC on the new data, if provided
// If not provided, hamming code set to 0xFFFF.. to keep existing bytes
memset(ecc->hamming, 0xFF, NandCommon_MAXSPAREECCBYTES);
if (data) {
// Compute hamming code on data
Hamming_Compute256x(data, pageDataSize, ecc->hamming);
}
// Store code in spare buffer (if no buffer provided, use a temp. one)
if (!spare) {
spare = pSpareBuffer;
memset(spare, 0xFF, pageSpareSize);
}
NandSpareScheme_WriteEcc(NandFlashModel_GetScheme(MODEL(ecc)), spare, ecc->hamming);
// Perform write operation
error = RawNandFlash_WritePage(RAW(ecc), block, page, data, spare);
if (error)
goto error;
#else
// Store code in spare buffer (if no buffer provided, use a temp. one)
if (!spare) {
spare = pSpareBuffer;
memset(spare, 0xFF, pageSpareSize);
}
// Perform write operation
error = RawNandFlash_WritePage(RAW(ecc), block, page, data, spare);
if (error)
goto error;
HSMC4_GetEccParity(pageDataSize, hsiao, NandFlashModel_GetDataBusWidth(MODEL(ecc)));
// Perform write operation
NandSpareScheme_WriteEcc(NandFlashModel_GetScheme(MODEL(ecc)), spare, hsiao);
error = RawNandFlash_WritePage(RAW(ecc), block, page, 0, spare);
if (error)
goto error;
#endif
RawNandFlash_ReleaseSpareBuffer(RAW(ecc));
return 0;
error:
RawNandFlash_ReleaseSpareBuffer(RAW(ecc));
TRACE_ERROR("EccNandFlash_WritePage: Failed to write page\n\r");
return error;
}
/**
* \brief Writes the data and/or spare area of a nandflash page, after calculating an
* ECC for the data area and storing it in the spare. If no data buffer is
* provided, the ECC is read from the existing page spare. If no spare buffer
* is provided, the spare area is still written with the ECC information
* calculated on the data buffer.
* \param ecc Pointer to an EccNandFlash instance.
* \param block Number of block to read from.
* \param page Number of page to read inside given block.
* \param data Data area buffer.
* \param spare Spare area buffer.
* \return 0 if successful; otherwise returns an error code.
*/
unsigned char EccNandFlash_WritePage(
const struct EccNandFlash *ecc,
unsigned short block,
unsigned short page,
void *data,
void *spare)
{
unsigned char error;
unsigned char tmpSpare[NandCommon_MAXPAGESPARESIZE];
unsigned short pageDataSize = NandFlashModel_GetPageDataSize(MODEL(ecc));
unsigned short pageSpareSize = NandFlashModel_GetPageSpareSize(MODEL(ecc));
#ifndef HARDWARE_ECC
unsigned char hamming[NandCommon_MAXSPAREECCBYTES];
#else
unsigned char hsiao[NandCommon_MAXSPAREECCBYTES];
#endif
assert( (data != NULL) || (spare != NULL) ) ;
// TRACE_DEBUG( "EccNandFlash_WritePage: At least one area must be written\n\r" ) ;
TRACE_DEBUG("EccNandFlash_WritePage(B#%d:P#%d)\n\r", block, page);
#ifndef HARDWARE_ECC
/* Compute ECC on the new data, if provided */
/* If not provided, hamming code set to 0xFFFF.. to keep existing bytes */
memset(hamming, 0xFF, NandCommon_MAXSPAREECCBYTES);
if (data) {
/* Compute hamming code on data */
Hamming_Compute256x(data, pageDataSize, hamming);
}
/* Store code in spare buffer (if no buffer provided, use a temp. one) */
if (!spare) {
spare = tmpSpare;
memset(spare, 0xFF, pageSpareSize);
}
NandSpareScheme_WriteEcc(NandFlashModel_GetScheme(MODEL(ecc)), spare, hamming);
/* Perform write operation */
error = RawNandFlash_WritePage(RAW(ecc), block, page, data, spare);
if (error) {
TRACE_ERROR("EccNandFlash_WritePage: Failed to write page\n\r");
return error;
}
#else
/* Store code in spare buffer (if no buffer provided, use a temp. one) */
if (!spare) {
spare = tmpSpare;
memset(spare, 0xFF, pageSpareSize);
}
/* Perform write operation */
error = RawNandFlash_WritePage(RAW(ecc), block, page, data, spare);
if (error) {
TRACE_ERROR("EccNandFlash_WritePage: Failed to write page\n\r");
return error;
}
HSMC4_GetEccParity(pageDataSize, hsiao, NandFlashModel_GetDataBusWidth(MODEL(ecc)));
/* Perform write operation */
NandSpareScheme_WriteEcc(NandFlashModel_GetScheme(MODEL(ecc)), spare, hsiao);
error = RawNandFlash_WritePage(RAW(ecc), block, page, 0, spare);
if (error) {
TRACE_ERROR("EccNandFlash_WritePage: Failed to write page\n\r");
return error;
}
#endif
return 0;
}
