* Copyright 2011 Develer S.r.l. (http://www.develer.com/)
* -->
*
-* \brief Micron MT29F serial NAND driver
+* \brief ONFI 1.0 compliant NAND kblock driver
*
-* This module allows read/write access to Micron MT29F serial
-* NANDs.
+* Defective blocks are remapped in a reserved area of configurable size
+* at the bottom of the NAND.
+* At the moment there is no wear-leveling block translation: kblock's blocks
+* are mapped directly on NAND erase blocks: when a (k)block is written the
+* corresponding erase block is erased and all pages within are rewritten.
+* Partial write is not possible: it's recommended to use buffered mode.
+*
+* The driver needs to format the NAND before use. If the initialization code
+* detects a fresh memory it does a bad block scan and a formatting.
+* Format info isn't stored in NAND in a global structure: each block has its
+* info written in the spare area of its first page. These info contais a tag
+* to detect formatted blocks and an index for bad block remapping (struct
+* RemapInfo).
+*
+* The ECC for each page is written in the spare area too.
+*
+* Works only in 8 bit data mode and NAND parameters are not
+* detected at run-time, but hand-configured in cfg_nand.h.
+*
+* Heap is needed to allocate the tipically large buffer necessary
+* to erase and write a block.
*
* \author Stefano Fedrigo <aleph@develer.com>
+*
+* notest: avr
*/
-#include "mt29f.h"
-
+#include "nand.h"
#include <cfg/log.h>
#include <struct/heap.h>
#include <string.h> // memset
/*
- * Remap info written in the first page of each block
- * used to remap bad blocks.
+ * Remap info written in the first page of each block.
+ *
+ * This structure is used in blocks of the reserved area to store
+ * which block the block containing the structure is remapping.
+ * It's stored in all other blocks too to mark a formatted block.
+ * In this case the member mapped_blk has non meaning.
*/
struct RemapInfo
{
uint16_t mapped_blk; // Bad block the block containing this info is remapping
};
-#define MT29F_REMAP_TAG_OFFSET (CONFIG_MT29F_SPARE_SIZE - sizeof(struct RemapInfo))
-#define MT29F_REMAP_TAG 0x3e10c8ed
+// Where RemapInfo is stored in the spare area
+#define NAND_REMAP_TAG_OFFSET (CONFIG_NAND_SPARE_SIZE - sizeof(struct RemapInfo))
+
+// Fixed tag to detect RemapInfo
+#define NAND_REMAP_TAG 0x3e10c8ed
+
+/*
+ * Number of ECC words computed for a page.
+ *
+ * For 2048 bytes pages and 1 ECC word each 256 bytes,
+ * 24 bytes of ECC data are stored.
+ */
+#define NAND_ECC_NWORDS (CONFIG_NAND_DATA_SIZE / 256)
+
+// Total page size (user data + spare) in bytes
+#define NAND_PAGE_SIZE (CONFIG_NAND_DATA_SIZE + CONFIG_NAND_SPARE_SIZE)
+
+// Erase block size in bytes
+#define NAND_BLOCK_SIZE (CONFIG_NAND_DATA_SIZE * CONFIG_NAND_PAGES_PER_BLOCK)
+
+// Number of usable blocks, and index of first remapping block
+#define NAND_NUM_USER_BLOCKS (CONFIG_NAND_NUM_BLOCK - CONFIG_NAND_NUM_REMAP_BLOCKS)
-#define MT29F_ECC_NWORDS (CONFIG_MT29F_DATA_SIZE / 256)
+// ONFI NAND status codes
+#define NAND_STATUS_READY BV(6)
+#define NAND_STATUS_ERROR BV(0)
-// NAND flash status codes
-#define MT29F_STATUS_READY BV(6)
-#define MT29F_STATUS_ERROR BV(0)
+
+// Get block from page
+#define PAGE(blk) ((blk) * CONFIG_NAND_PAGES_PER_BLOCK)
+
+// Page from block and page in block
+#define BLOCK(page) ((uint16_t)((page) / CONFIG_NAND_PAGES_PER_BLOCK))
+#define PAGE_IN_BLOCK(page) ((uint16_t)((page) % CONFIG_NAND_PAGES_PER_BLOCK))
/*
- * Translate flash page index plus a byte offset
+ * Translate page index plus a byte offset
* in the five address cycles format needed by NAND.
*
- * Cycles in x8 mode as the MT29F2G08AAD
+ * Cycles in x8 mode.
* CA = column addr, PA = page addr, BA = block addr
*
* Cycle I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O1 I/O0
*/
static void getAddrCycles(uint32_t page, uint16_t offset, uint32_t *cycle0, uint32_t *cycle1234)
{
- ASSERT(offset < MT29F_PAGE_SIZE);
+ ASSERT(offset < NAND_PAGE_SIZE);
*cycle0 = offset & 0xff;
*cycle1234 = (page << 8) | ((offset >> 8) & 0xf);
-
- //LOG_INFO("mt29f addr: %lx %lx\n", *cycle1234, *cycle0);
}
-static void chipReset(Mt29f *chip)
+static void chipReset(Nand *chip)
{
- mt29f_sendCommand(chip, MT29F_CMD_RESET, 0, 0, 0, 0);
- mt29f_waitReadyBusy(chip, CONFIG_MT29F_TMOUT);
+ nand_sendCommand(chip, NAND_CMD_RESET, 0, 0, 0, 0);
+ nand_waitReadyBusy(chip, CONFIG_NAND_TMOUT);
}
-static bool isOperationComplete(Mt29f *chip)
+static bool isOperationComplete(Nand *chip)
{
uint8_t status;
- mt29f_sendCommand(chip, MT29F_CMD_STATUS, 0, 0, 0, 0);
+ nand_sendCommand(chip, NAND_CMD_STATUS, 0, 0, 0, 0);
- status = mt29f_getChipStatus(chip);
- return (status & MT29F_STATUS_READY) && !(status & MT29F_STATUS_ERROR);
+ status = nand_getChipStatus(chip);
+ return (status & NAND_STATUS_READY) && !(status & NAND_STATUS_ERROR);
}
/**
* Erase the whole block.
*/
-int mt29f_blockErase(Mt29f *chip, uint16_t block)
+int nand_blockErase(Nand *chip, uint16_t block)
{
uint32_t cycle0;
uint32_t cycle1234;
uint16_t remapped_block = chip->block_map[block];
if (block != remapped_block)
{
- LOG_INFO("mt29f_blockErase: remapped block: blk %d->%d\n", block, remapped_block);
+ LOG_INFO("nand_blockErase: remapped block: blk %d->%d\n", block, remapped_block);
block = remapped_block;
}
getAddrCycles(PAGE(block), 0, &cycle0, &cycle1234);
- mt29f_sendCommand(chip, MT29F_CMD_ERASE_1, MT29F_CMD_ERASE_2, 3, 0, cycle1234 >> 8);
+ nand_sendCommand(chip, NAND_CMD_ERASE_1, NAND_CMD_ERASE_2, 3, 0, cycle1234 >> 8);
- mt29f_waitReadyBusy(chip, CONFIG_MT29F_TMOUT);
+ nand_waitReadyBusy(chip, CONFIG_NAND_TMOUT);
if (!isOperationComplete(chip))
{
- LOG_ERR("mt29f: error erasing block\n");
- chip->status |= MT29F_ERR_ERASE;
+ LOG_ERR("nand: error erasing block\n");
+ chip->status |= NAND_ERR_ERASE;
return -1;
}
/**
* Read Device ID and configuration codes.
*/
-bool mt29f_getDevId(Mt29f *chip, uint8_t dev_id[5])
+bool nand_getDevId(Nand *chip, uint8_t dev_id[5])
{
- mt29f_sendCommand(chip, MT29F_CMD_READID, 0, 1, 0, 0);
+ nand_sendCommand(chip, NAND_CMD_READID, 0, 1, 0, 0);
- mt29f_waitReadyBusy(chip, CONFIG_MT29F_TMOUT);
- if (!mt29f_waitTransferComplete(chip, CONFIG_MT29F_TMOUT))
+ nand_waitReadyBusy(chip, CONFIG_NAND_TMOUT);
+ if (!nand_waitTransferComplete(chip, CONFIG_NAND_TMOUT))
{
- LOG_ERR("mt29f: getDevId timeout\n");
- chip->status |= MT29F_ERR_RD_TMOUT;
+ LOG_ERR("nand: getDevId timeout\n");
+ chip->status |= NAND_ERR_RD_TMOUT;
return false;
}
- memcpy(dev_id, mt29f_dataBuffer(chip), sizeof(dev_id));
+ memcpy(dev_id, nand_dataBuffer(chip), sizeof(dev_id));
return true;
}
-static bool mt29f_readPage(Mt29f *chip, uint32_t page, uint16_t offset)
+static bool nand_readPage(Nand *chip, uint32_t page, uint16_t offset)
{
uint32_t cycle0;
uint32_t cycle1234;
- //LOG_INFO("mt29f_readPage: page 0x%lx off 0x%x\n", page, offset);
+ //LOG_INFO("nand_readPage: page 0x%lx off 0x%x\n", page, offset);
getAddrCycles(page, offset, &cycle0, &cycle1234);
- mt29f_sendCommand(chip, MT29F_CMD_READ_1, MT29F_CMD_READ_2, 5, cycle0, cycle1234);
+ nand_sendCommand(chip, NAND_CMD_READ_1, NAND_CMD_READ_2, 5, cycle0, cycle1234);
- mt29f_waitReadyBusy(chip, CONFIG_MT29F_TMOUT);
- if (!mt29f_waitTransferComplete(chip, CONFIG_MT29F_TMOUT))
+ nand_waitReadyBusy(chip, CONFIG_NAND_TMOUT);
+ if (!nand_waitTransferComplete(chip, CONFIG_NAND_TMOUT))
{
- LOG_ERR("mt29f: read timeout\n");
- chip->status |= MT29F_ERR_RD_TMOUT;
+ LOG_ERR("nand: read timeout\n");
+ chip->status |= NAND_ERR_RD_TMOUT;
return false;
}
* Read page data and ECC, checking for errors.
* TODO: fix errors with ECC when possible.
*/
-static bool mt29f_read(Mt29f *chip, uint32_t page, void *buf, uint16_t offset, uint16_t size)
+static bool nand_read(Nand *chip, uint32_t page, void *buf, uint16_t offset, uint16_t size)
{
struct RemapInfo remap_info;
uint32_t remapped_page = PAGE(chip->block_map[BLOCK(page)]) + PAGE_IN_BLOCK(page);
- //LOG_INFO("mt29f_read: page=%ld, offset=%d, size=%d\n", page, offset, size);
+ //LOG_INFO("nand_read: page=%ld, offset=%d, size=%d\n", page, offset, size);
if (page != remapped_page)
{
- LOG_INFO("mt29f_read: remapped block: blk %d->%d, pg %ld->%ld\n",
+ LOG_INFO("nand_read: remapped block: blk %d->%d, pg %ld->%ld\n",
BLOCK(page), chip->block_map[BLOCK(page)], page, remapped_page);
page = remapped_page;
}
- if (!mt29f_readPage(chip, page, 0))
+ if (!nand_readPage(chip, page, 0))
return false;
- memcpy(buf, (char *)mt29f_dataBuffer(chip) + offset, size);
+ memcpy(buf, (char *)nand_dataBuffer(chip) + offset, size);
/*
* Check for ECC hardware status only if a valid RemapInfo structure is found.
* That guarantees the page is written by us and a valid ECC is present.
*/
- memcpy(&remap_info, (char *)buf + MT29F_REMAP_TAG_OFFSET, sizeof(remap_info));
- if (remap_info.tag == MT29F_REMAP_TAG)
- return mt29f_checkEcc(chip);
+ memcpy(&remap_info, (char *)buf + NAND_REMAP_TAG_OFFSET, sizeof(remap_info));
+ if (remap_info.tag == NAND_REMAP_TAG && !nand_checkEcc(chip))
+ {
+ chip->status |= NAND_ERR_ECC;
+ return false;
+ }
else
return true;
}
/*
- * Write data in NFC SRAM buffer to a NAND page, starting at a given offset.
- * Usually offset will be 0 to write data or CONFIG_MT29F_DATA_SIZE to write the spare
+ * Write data stored in nand_dataBuffer() to a NAND page, starting at a given offset.
+ * Usually offset will be 0 to write data or CONFIG_NAND_DATA_SIZE to write the spare
* area.
- *
- * According to datasheet to get ECC computed by hardware is sufficient
- * to write the main area. But it seems that in that way the last ECC_PR
- * register is not generated. The workaround is to write data and dummy (ff)
- * spare data in one write, at this point the last ECC_PR is correct and
- * ECC data can be written in the spare area with a second program operation.
*/
-static bool mt29f_writePage(Mt29f *chip, uint32_t page, uint16_t offset)
+static bool nand_writePage(Nand *chip, uint32_t page, uint16_t offset)
{
uint32_t cycle0;
uint32_t cycle1234;
- //LOG_INFO("mt29f_writePage: page 0x%lx off 0x%x\n", page, offset);
+ //LOG_INFO("nand_writePage: page 0x%lx off 0x%x\n", page, offset);
getAddrCycles(page, offset, &cycle0, &cycle1234);
- mt29f_sendCommand(chip, MT29F_CMD_WRITE_1, 0, 5, cycle0, cycle1234);
+ nand_sendCommand(chip, NAND_CMD_WRITE_1, 0, 5, cycle0, cycle1234);
- if (!mt29f_waitTransferComplete(chip, CONFIG_MT29F_TMOUT))
+ if (!nand_waitTransferComplete(chip, CONFIG_NAND_TMOUT))
{
- LOG_ERR("mt29f: write timeout\n");
- chip->status |= MT29F_ERR_WR_TMOUT;
+ LOG_ERR("nand: write timeout\n");
+ chip->status |= NAND_ERR_WR_TMOUT;
return false;
}
- mt29f_sendCommand(chip, MT29F_CMD_WRITE_2, 0, 0, 0, 0);
+ nand_sendCommand(chip, NAND_CMD_WRITE_2, 0, 0, 0, 0);
- mt29f_waitReadyBusy(chip, CONFIG_MT29F_TMOUT);
+ nand_waitReadyBusy(chip, CONFIG_NAND_TMOUT);
if (!isOperationComplete(chip))
{
- LOG_ERR("mt29f: error writing page\n");
- chip->status |= MT29F_ERR_WRITE;
+ LOG_ERR("nand: error writing page\n");
+ chip->status |= NAND_ERR_WRITE;
return false;
}
* \param page the page to be written
* \parma original_page if different from page, it's the page that's being remapped
*
- * ECC data are extracted from ECC_PRx registers and written
- * in the page's spare area.
- * For 2048 bytes pages and 1 ECC word each 256 bytes,
- * 24 bytes of ECC data are stored.
+ * Implementation note for SAM3 NFC controller:
+ * according to datasheet to get ECC computed by hardware is sufficient
+ * to write the main area. But it seems that in that way the last ECC_PR
+ * register is not generated. The workaround is to write data and dummy (ff)
+ * spare data in one write, at this point the last ECC_PR is correct and
+ * ECC data can be written in the spare area with a second program operation.
*/
-static bool mt29f_write(Mt29f *chip, uint32_t page, const void *buf, size_t size)
+static bool nand_write(Nand *chip, uint32_t page, const void *buf, size_t size)
{
struct RemapInfo remap_info;
- uint32_t *nand_buf = (uint32_t *)mt29f_dataBuffer(chip);
+ uint32_t *nand_buf = (uint32_t *)nand_dataBuffer(chip);
uint32_t remapped_page = PAGE(chip->block_map[BLOCK(page)]) + PAGE_IN_BLOCK(page);
- ASSERT(size <= CONFIG_MT29F_DATA_SIZE);
+ ASSERT(size <= CONFIG_NAND_DATA_SIZE);
if (page != remapped_page)
- LOG_INFO("mt29f_write: remapped block: blk %d->%d, pg %ld->%ld\n",
+ LOG_INFO("nand_write: remapped block: blk %d->%d, pg %ld->%ld\n",
BLOCK(page), chip->block_map[BLOCK(page)], page, remapped_page);
// Data
- memset(nand_buf, 0xff, MT29F_PAGE_SIZE);
+ memset(nand_buf, 0xff, NAND_PAGE_SIZE);
memcpy(nand_buf, buf, size);
- if (!mt29f_writePage(chip, remapped_page, 0))
+ if (!nand_writePage(chip, remapped_page, 0))
return false;
// ECC
- memset(nand_buf, 0xff, CONFIG_MT29F_SPARE_SIZE);
- mt29f_computeEcc(chip, buf, size, nand_buf, MT29F_ECC_NWORDS);
+ memset(nand_buf, 0xff, CONFIG_NAND_SPARE_SIZE);
+ nand_computeEcc(chip, buf, size, nand_buf, NAND_ECC_NWORDS);
// Remap info
- remap_info.tag = MT29F_REMAP_TAG;
+ remap_info.tag = NAND_REMAP_TAG;
remap_info.mapped_blk = BLOCK(page);
- memcpy((char *)nand_buf + MT29F_REMAP_TAG_OFFSET, &remap_info, sizeof(remap_info));
+ memcpy((char *)nand_buf + NAND_REMAP_TAG_OFFSET, &remap_info, sizeof(remap_info));
- return mt29f_writePage(chip, remapped_page, CONFIG_MT29F_DATA_SIZE);
+ return nand_writePage(chip, remapped_page, CONFIG_NAND_DATA_SIZE);
}
* that bad block are marked with "00" bytes on the spare area of the
* first page in block.
*/
-static bool blockIsGood(Mt29f *chip, uint16_t blk)
+static bool blockIsGood(Nand *chip, uint16_t blk)
{
- uint8_t *first_byte = (uint8_t *)mt29f_dataBuffer(chip);
+ uint8_t *first_byte = (uint8_t *)nand_dataBuffer(chip);
bool good;
// Check first byte in spare area of first page in block
- mt29f_readPage(chip, PAGE(blk), CONFIG_MT29F_DATA_SIZE);
+ nand_readPage(chip, PAGE(blk), CONFIG_NAND_DATA_SIZE);
good = *first_byte != 0;
if (!good)
- LOG_INFO("mt29f: bad block %d\n", blk);
+ LOG_INFO("nand: bad block %d\n", blk);
return good;
}
* Return the main partition block remapped on given block in the remap
* partition (dest_blk).
*/
-static int getBadBlockFromRemapBlock(Mt29f *chip, uint16_t dest_blk)
+static int getBadBlockFromRemapBlock(Nand *chip, uint16_t dest_blk)
{
- struct RemapInfo *remap_info = (struct RemapInfo *)mt29f_dataBuffer(chip);
+ struct RemapInfo *remap_info = (struct RemapInfo *)nand_dataBuffer(chip);
- if (!mt29f_readPage(chip, PAGE(dest_blk), CONFIG_MT29F_DATA_SIZE + MT29F_REMAP_TAG_OFFSET))
+ if (!nand_readPage(chip, PAGE(dest_blk), CONFIG_NAND_DATA_SIZE + NAND_REMAP_TAG_OFFSET))
return -1;
- if (remap_info->tag == MT29F_REMAP_TAG)
+ if (remap_info->tag == NAND_REMAP_TAG)
return remap_info->mapped_blk;
else
return -1;
/*
- * Set a block remapping: src_blk (a block in main data partition) is remappend
+ * Set a block remapping: src_blk (a block in main data partition) is remapped
* on dest_blk (block in reserved remapped blocks partition).
*/
-static bool setMapping(Mt29f *chip, uint32_t src_blk, uint32_t dest_blk)
+static bool setMapping(Nand *chip, uint32_t src_blk, uint32_t dest_blk)
{
- struct RemapInfo *remap_info = (struct RemapInfo *)mt29f_dataBuffer(chip);
+ struct RemapInfo *remap_info = (struct RemapInfo *)nand_dataBuffer(chip);
- LOG_INFO("mt29f, setMapping(): src=%ld dst=%ld\n", src_blk, dest_blk);
+ LOG_INFO("nand, setMapping(): src=%ld dst=%ld\n", src_blk, dest_blk);
- if (!mt29f_readPage(chip, PAGE(dest_blk), CONFIG_MT29F_DATA_SIZE + MT29F_REMAP_TAG_OFFSET))
+ if (!nand_readPage(chip, PAGE(dest_blk), CONFIG_NAND_DATA_SIZE + NAND_REMAP_TAG_OFFSET))
return false;
- remap_info->tag = MT29F_REMAP_TAG;
+ remap_info->tag = NAND_REMAP_TAG;
remap_info->mapped_blk = src_blk;
- return mt29f_writePage(chip, PAGE(dest_blk), CONFIG_MT29F_DATA_SIZE + MT29F_REMAP_TAG_OFFSET);
+ return nand_writePage(chip, PAGE(dest_blk), CONFIG_NAND_DATA_SIZE + NAND_REMAP_TAG_OFFSET);
}
* Get a new block from the remap partition to use as a substitute
* for a bad block.
*/
-static uint16_t getFreeRemapBlock(Mt29f *chip)
+static uint16_t getFreeRemapBlock(Nand *chip)
{
int blk;
- for (blk = chip->remap_start; blk < CONFIG_MT29F_NUM_BLOCK; blk++)
+ for (blk = chip->remap_start; blk < CONFIG_NAND_NUM_BLOCK; blk++)
{
if (blockIsGood(chip, blk))
{
}
}
- LOG_ERR("mt29f: reserved blocks for bad block remapping exhausted!\n");
+ LOG_ERR("nand: reserved blocks for bad block remapping exhausted!\n");
return 0;
}
/*
* Check if NAND is initialized.
*/
-static bool chipIsMarked(Mt29f *chip)
+static bool chipIsMarked(Nand *chip)
{
- return getBadBlockFromRemapBlock(chip, MT29F_NUM_USER_BLOCKS) != -1;
+ return getBadBlockFromRemapBlock(chip, NAND_NUM_USER_BLOCKS) != -1;
}
/*
* Initialize NAND (format). Scan NAND for factory marked bad blocks.
- * All bad blocks found are remapped to the remap partition: each
+ * All found bad blocks are remapped to the remap partition: each
* block in the remap partition used to remap bad blocks is marked.
*/
-static void initBlockMap(Mt29f *chip)
+static void initBlockMap(Nand *chip)
{
int b, last;
// Default is for each block to not be remapped
- for (b = 0; b < CONFIG_MT29F_NUM_BLOCK; b++)
+ for (b = 0; b < CONFIG_NAND_NUM_BLOCK; b++)
chip->block_map[b] = b;
- chip->remap_start = MT29F_NUM_USER_BLOCKS;
+ chip->remap_start = NAND_NUM_USER_BLOCKS;
if (chipIsMarked(chip))
{
- LOG_INFO("mt29f: found initialized NAND, searching for remapped blocks\n");
+ LOG_INFO("nand: found initialized NAND, searching for remapped blocks\n");
// Scan for assigned blocks in remap area
- for (b = last = MT29F_NUM_USER_BLOCKS; b < CONFIG_MT29F_NUM_BLOCK; b++)
+ for (b = last = NAND_NUM_USER_BLOCKS; b < CONFIG_NAND_NUM_BLOCK; b++)
{
int remapped_blk = getBadBlockFromRemapBlock(chip, b);
if (remapped_blk != -1 && remapped_blk != b)
{
- LOG_INFO("mt29f: found remapped block %d->%d\n", remapped_blk, b);
+ LOG_INFO("nand: found remapped block %d->%d\n", remapped_blk, b);
chip->block_map[remapped_blk] = b;
last = b + 1;
}
{
bool remapped_anything = false;
- LOG_INFO("mt29f: found new NAND, searching for bad blocks\n");
+ LOG_INFO("nand: found new NAND, searching for bad blocks\n");
- for (b = 0; b < MT29F_NUM_USER_BLOCKS; b++)
+ for (b = 0; b < NAND_NUM_USER_BLOCKS; b++)
{
if (!blockIsGood(chip, b))
{
chip->block_map[b] = getFreeRemapBlock(chip);
setMapping(chip, b, chip->block_map[b]);
remapped_anything = true;
- LOG_INFO("mt29f: found new bad block %d, remapped to %d\n", b, chip->block_map[b]);
+ LOG_WARN("nand: found new bad block %d, remapped to %d\n", b, chip->block_map[b]);
}
}
/*
- * If no bad blocks are found (we're lucky!) write a dummy
+ * If no bad blocks are found (we're lucky!) write anyway a dummy
* remap to mark NAND and detect we already scanned it next time.
*/
if (!remapped_anything)
{
- setMapping(chip, MT29F_NUM_USER_BLOCKS, MT29F_NUM_USER_BLOCKS);
- LOG_INFO("mt29f: no bad block founds, marked NAND\n");
+ setMapping(chip, NAND_NUM_USER_BLOCKS, NAND_NUM_USER_BLOCKS);
+ LOG_INFO("nand: no bad block founds, marked NAND\n");
}
}
}
* \note DON'T USE on production chips: this function will try to erase
* factory marked bad blocks too.
*/
-void mt29f_format(Mt29f *chip)
+void nand_format(Nand *chip)
{
int b;
- for (b = 0; b < CONFIG_MT29F_NUM_BLOCK; b++)
+ for (b = 0; b < CONFIG_NAND_NUM_BLOCK; b++)
{
- LOG_INFO("mt29f: erasing block %d\n", b);
+ LOG_INFO("nand: erasing block %d\n", b);
chip->block_map[b] = b;
- mt29f_blockErase(chip, b);
+ nand_blockErase(chip, b);
}
- chip->remap_start = MT29F_NUM_USER_BLOCKS;
+ chip->remap_start = NAND_NUM_USER_BLOCKS;
}
#ifdef _DEBUG
/*
* Create some bad blocks, erasing them and writing the bad block mark.
*/
-void mt29f_ruinSomeBlocks(Mt29f *chip)
+void nand_ruinSomeBlocks(Nand *chip)
{
int bads[] = { 7, 99, 555, 1003, 1004, 1432 };
unsigned i;
- LOG_INFO("mt29f: erasing mark\n");
- mt29f_blockErase(chip, MT29F_NUM_USER_BLOCKS);
+ LOG_INFO("nand: erasing mark\n");
+ nand_blockErase(chip, NAND_NUM_USER_BLOCKS);
for (i = 0; i < countof(bads); i++)
{
- LOG_INFO("mt29f: erasing block %d\n", bads[i]);
- mt29f_blockErase(chip, bads[i]);
+ LOG_INFO("nand: erasing block %d\n", bads[i]);
+ nand_blockErase(chip, bads[i]);
- LOG_INFO("mt29f: marking page %d as bad\n", PAGE(bads[i]));
- memset(mt29f_dataBuffer(chip), 0, CONFIG_MT29F_SPARE_SIZE);
- mt29f_writePage(chip, PAGE(bads[i]), CONFIG_MT29F_DATA_SIZE);
+ LOG_INFO("nand: marking page %d as bad\n", PAGE(bads[i]));
+ memset(nand_dataBuffer(chip), 0, CONFIG_NAND_SPARE_SIZE);
+ nand_writePage(chip, PAGE(bads[i]), CONFIG_NAND_DATA_SIZE);
}
}
#endif
-static bool commonInit(Mt29f *chip, struct Heap *heap, unsigned chip_select)
+static bool commonInit(Nand *chip, struct Heap *heap, unsigned chip_select)
{
- memset(chip, 0, sizeof(Mt29f));
+ memset(chip, 0, sizeof(Nand));
DB(chip->fd.priv.type = KBT_NAND);
- chip->fd.blk_size = MT29F_BLOCK_SIZE;
- chip->fd.blk_cnt = MT29F_NUM_USER_BLOCKS;
+ chip->fd.blk_size = NAND_BLOCK_SIZE;
+ chip->fd.blk_cnt = NAND_NUM_USER_BLOCKS;
chip->chip_select = chip_select;
- chip->block_map = heap_allocmem(heap, CONFIG_MT29F_NUM_BLOCK * sizeof(*chip->block_map));
+ chip->block_map = heap_allocmem(heap, CONFIG_NAND_NUM_BLOCK * sizeof(*chip->block_map));
if (!chip->block_map)
{
- LOG_ERR("mt29f: error allocating block map\n");
+ LOG_ERR("nand: error allocating block map\n");
return false;
}
- mt29f_hwInit(chip);
+ nand_hwInit(chip);
chipReset(chip);
initBlockMap(chip);
/**************** Kblock interface ****************/
-static size_t mt29f_writeDirect(struct KBlock *kblk, block_idx_t idx, const void *buf, size_t offset, size_t size)
+static size_t nand_writeDirect(struct KBlock *kblk, block_idx_t idx, const void *buf, size_t offset, size_t size)
{
- ASSERT(offset <= MT29F_BLOCK_SIZE);
- ASSERT(offset % CONFIG_MT29F_DATA_SIZE == 0);
- ASSERT(size <= MT29F_BLOCK_SIZE);
- ASSERT(size % CONFIG_MT29F_DATA_SIZE == 0);
+ ASSERT(offset <= NAND_BLOCK_SIZE);
+ ASSERT(offset % CONFIG_NAND_DATA_SIZE == 0);
+ ASSERT(size <= NAND_BLOCK_SIZE);
+ ASSERT(size % CONFIG_NAND_DATA_SIZE == 0);
- //LOG_INFO("mt29f_writeDirect: idx=%ld offset=%d size=%d\n", idx, offset, size);
+ LOG_INFO("nand_writeDirect: idx=%ld offset=%d size=%d\n", idx, offset, size);
- mt29f_blockErase(MT29F_CAST(kblk), idx);
+ nand_blockErase(NAND_CAST(kblk), idx);
while (offset < size)
{
- uint32_t page = PAGE(idx) + (offset / CONFIG_MT29F_DATA_SIZE);
+ uint32_t page = PAGE(idx) + (offset / CONFIG_NAND_DATA_SIZE);
- if (!mt29f_write(MT29F_CAST(kblk), page, buf, CONFIG_MT29F_DATA_SIZE))
+ if (!nand_write(NAND_CAST(kblk), page, buf, CONFIG_NAND_DATA_SIZE))
break;
- offset += CONFIG_MT29F_DATA_SIZE;
- buf = (const char *)buf + CONFIG_MT29F_DATA_SIZE;
+ offset += CONFIG_NAND_DATA_SIZE;
+ buf = (const char *)buf + CONFIG_NAND_DATA_SIZE;
}
return offset;
}
-static size_t mt29f_readDirect(struct KBlock *kblk, block_idx_t idx, void *buf, size_t offset, size_t size)
+static size_t nand_readDirect(struct KBlock *kblk, block_idx_t idx, void *buf, size_t offset, size_t size)
{
uint32_t page;
size_t read_size;
size_t read_offset;
size_t nread = 0;
- ASSERT(offset < MT29F_BLOCK_SIZE);
- ASSERT(size <= MT29F_BLOCK_SIZE);
+ ASSERT(offset < NAND_BLOCK_SIZE);
+ ASSERT(size <= NAND_BLOCK_SIZE);
- //LOG_INFO("mt29f_readDirect: idx=%ld offset=%d size=%d\n", idx, offset, size);
+ LOG_INFO("nand_readDirect: idx=%ld offset=%d size=%d\n", idx, offset, size);
while (nread < size)
{
- page = PAGE(idx) + (offset / CONFIG_MT29F_DATA_SIZE);
- read_offset = offset % CONFIG_MT29F_DATA_SIZE;
- read_size = MIN(size, CONFIG_MT29F_DATA_SIZE - read_offset);
+ page = PAGE(idx) + (offset / CONFIG_NAND_DATA_SIZE);
+ read_offset = offset % CONFIG_NAND_DATA_SIZE;
+ read_size = MIN(size, CONFIG_NAND_DATA_SIZE - read_offset);
- if (!mt29f_read(MT29F_CAST(kblk), page, (char *)buf + nread, read_offset, read_size))
+ if (!nand_read(NAND_CAST(kblk), page, (char *)buf + nread, read_offset, read_size))
break;
offset += read_size;
}
-static int mt29f_error(struct KBlock *kblk)
+static int nand_error(struct KBlock *kblk)
{
- Mt29f *chip = MT29F_CAST(kblk);
+ Nand *chip = NAND_CAST(kblk);
return chip->status;
}
-static void mt29f_clearError(struct KBlock *kblk)
+static void nand_clearError(struct KBlock *kblk)
{
- Mt29f *chip = MT29F_CAST(kblk);
+ Nand *chip = NAND_CAST(kblk);
chip->status = 0;
}
-static const KBlockVTable mt29f_buffered_vt =
+static const KBlockVTable nand_buffered_vt =
{
- .readDirect = mt29f_readDirect,
- .writeDirect = mt29f_writeDirect,
+ .readDirect = nand_readDirect,
+ .writeDirect = nand_writeDirect,
.readBuf = kblock_swReadBuf,
.writeBuf = kblock_swWriteBuf,
.load = kblock_swLoad,
.store = kblock_swStore,
- .error = mt29f_error,
- .clearerr = mt29f_clearError,
+ .error = nand_error,
+ .clearerr = nand_clearError,
};
-static const KBlockVTable mt29f_unbuffered_vt =
+static const KBlockVTable nand_unbuffered_vt =
{
- .readDirect = mt29f_readDirect,
- .writeDirect = mt29f_writeDirect,
+ .readDirect = nand_readDirect,
+ .writeDirect = nand_writeDirect,
- .error = mt29f_error,
- .clearerr = mt29f_clearError,
+ .error = nand_error,
+ .clearerr = nand_clearError,
};
/**
* Initialize NAND kblock driver in buffered mode.
*/
-bool mt29f_init(Mt29f *chip, struct Heap *heap, unsigned chip_select)
+bool nand_init(Nand *chip, struct Heap *heap, unsigned chip_select)
{
if (!commonInit(chip, heap, chip_select))
return false;
- chip->fd.priv.vt = &mt29f_buffered_vt;
+ chip->fd.priv.vt = &nand_buffered_vt;
chip->fd.priv.flags |= KB_BUFFERED;
- chip->fd.priv.buf = heap_allocmem(heap, MT29F_BLOCK_SIZE);
+ chip->fd.priv.buf = heap_allocmem(heap, NAND_BLOCK_SIZE);
if (!chip->fd.priv.buf)
{
- LOG_ERR("mt29f: error allocating block buffer\n");
+ LOG_ERR("nand: error allocating block buffer\n");
return false;
}
// Load the first block in the cache
- return mt29f_readDirect(&chip->fd, 0, chip->fd.priv.buf, 0, chip->fd.blk_size);
+ return nand_readDirect(&chip->fd, 0, chip->fd.priv.buf, 0, chip->fd.blk_size);
}
/**
* Initialize NAND kblock driver in unbuffered mode.
*/
-bool mt29f_initUnbuffered(Mt29f *chip, struct Heap *heap, unsigned chip_select)
+bool nand_initUnbuffered(Nand *chip, struct Heap *heap, unsigned chip_select)
{
if (!commonInit(chip, heap, chip_select))
return false;
- chip->fd.priv.vt = &mt29f_unbuffered_vt;
+ chip->fd.priv.vt = &nand_unbuffered_vt;
return true;
}
projects / bertos.git / blobdiff