LP43xx SPIFI MTD driver update
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4971 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
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@ -124,6 +124,12 @@
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/* Protection/sector descriptors */
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struct spfi_desc_s
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@ -237,25 +243,33 @@ struct spifi_driver_s
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#endif
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/****************************************************************************
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* Private Data
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#ifdef CONFIG_SPIFI_LIBRARY
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EXTERN int32_t spifi_init(struct spifi_dev_s *dev, uint32_t cshigh,
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uint32_t options, uint32_t mhz);
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EXTERN int32_t spifi_program(struct spifi_dev_s *dev, const uint8_t *source,
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struct spifi_operands_s *opers);
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EXTERN int32_t spifi_erase(struct spifi_dev_s *dev,
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struct spifi_operands_s *opers);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_SPIFI_H */
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@ -81,6 +81,14 @@
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* FAT friendly 512 byte sector size and will manage the read-modify-write
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* operations on the larger erase block.
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* CONFIG_SPIFI_READONLY - Define to support only read-only operations.
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* CONFIG_SPIFI_LIBRARY - Don't use the LPC43xx ROM routines but, instead,
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* use an external library implementation of the SPIFI interface.
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* CONFIG_SPIFI_VERIFY - Verify all spi_program() operations by reading
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* from the SPI address space after each write.
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* CONFIG_DEBUG_SPIFI_DUMP - Debug option to dump read/write buffers. You
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* probably do not want to enable this unless you want to dig through a
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* *lot* of debug output! Also required CONFIG_DEBUG, CONFIG_DEBUG_VERBOSE,
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* and CONFIG_DEBUG_FS,
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*/
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/* This is where the LPC43xx address where random-access reads begin */
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@ -157,15 +165,15 @@
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#define IS_VALID(p) ((((p)->flags) & SST25_CACHE_VALID) != 0)
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#define IS_DIRTY(p) ((((p)->flags) & SST25_CACHE_DIRTY) != 0)
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#define IS_ERASED(p) ((((p)->flags) & SST25_CACHE_DIRTY) != 0)
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#define IS_ERASED(p) ((((p)->flags) & SST25_CACHE_ERASED) != 0)
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#define SET_VALID(p) do { (p)->flags |= SST25_CACHE_VALID; } while (0)
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#define SET_DIRTY(p) do { (p)->flags |= SST25_CACHE_DIRTY; } while (0)
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#define SET_ERASED(p) do { (p)->flags |= SST25_CACHE_DIRTY; } while (0)
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#define SET_ERASED(p) do { (p)->flags |= SST25_CACHE_ERASED; } while (0)
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#define CLR_VALID(p) do { (p)->flags &= ~SST25_CACHE_VALID; } while (0)
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#define CLR_DIRTY(p) do { (p)->flags &= ~SST25_CACHE_DIRTY; } while (0)
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#define CLR_ERASED(p) do { (p)->flags &= ~SST25_CACHE_DIRTY; } while (0)
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#define CLR_ERASED(p) do { (p)->flags &= ~SST25_CACHE_ERASED; } while (0)
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/* Select the divider to use as SPIFI input based on definitions in the
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* board.h header file.
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@ -246,6 +254,20 @@
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#define SCLK_MHZ (BOARD_SPIFI_FREQUENCY + (1000000 / 2)) / 1000000
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/* DEBUG options to dump read/write buffers. You probably do not want to
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* enable this unless you want to dig through a *lot* of debug output!
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*/
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#if !defined(CONFIG_DEBUG) || !defined(CONFIG_DEBUG_VERBOSE) || !defined(CONFIG_DEBUG_FS)
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# undef CONFIG_DEBUG_SPIFI_DUMP
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#endif
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#ifdef CONFIG_DEBUG_SPIFI_DUMP
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# define lpc43_dumpbuffer(m,b,n) lib_dumpbuffer(m,b,n);
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#else
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# define lpc43_dumpbuffer(m,b,n)
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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@ -288,6 +310,10 @@ static inline void lpc43_pageread(FAR struct lpc43_dev_s *priv,
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FAR uint8_t *dest, FAR const uint8_t *src,
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size_t nbytes);
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#ifndef CONFIG_SPIFI_READONLY
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#ifdef CONFIG_SPIFI_VERIFY
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static int lpc43_verify(FAR struct lpc43_dev_s *priv, FAR uint8_t *dest,
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FAR const uint8_t *src, size_t nbytes);
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#endif
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static int lpc43_pagewrite(FAR struct lpc43_dev_s *priv, FAR uint8_t *dest,
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FAR const uint8_t *src, size_t nbytes);
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#ifdef CONFIG_SPIFI_SECTOR512
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@ -351,6 +377,9 @@ static void lpc43_blockerase(struct lpc43_dev_s *priv, off_t sector)
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priv->operands.dest = SPIFI_BASE + (sector << SPIFI_BLKSHIFT);
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priv->operands.length = SPIFI_BLKSIZE;
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fvdbg("SPIFI_ERASE: dest=%p length=%d\n",
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priv->operands.dest, priv->operands.length);
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result = SPIFI_ERASE(priv, &priv->rom, &priv->operands);
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if (result != 0)
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{
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@ -377,6 +406,9 @@ static inline int lpc43_chiperase(struct lpc43_dev_s *priv)
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priv->operands.dest = SPIFI_BASE;
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priv->operands.length = SPIFI_BLKSIZE * priv->nblocks;
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fvdbg("SPIFI_ERASE: dest=%p length=%d\n",
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priv->operands.dest, priv->operands.length);
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result = SPIFI_ERASE(priv, &priv->rom, &priv->operands);
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if (result != 0)
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{
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@ -387,6 +419,18 @@ static inline int lpc43_chiperase(struct lpc43_dev_s *priv)
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return OK;
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}
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/****************************************************************************
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* Name: lpc43_pagewrite
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****************************************************************************/
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#if !defined(CONFIG_SPIFI_READONLY) && defined(CONFIG_SPIFI_VERIFY)
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static int lpc43_verify(FAR struct lpc43_dev_s *priv, FAR uint8_t *dest,
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FAR const uint8_t *src, size_t nbytes)
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{
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return memcmp(src, dest, nbytes) != 0 ? -EIO : OK;
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}
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#endif
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/****************************************************************************
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* Name: lpc43_pagewrite
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****************************************************************************/
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@ -408,6 +452,9 @@ static int lpc43_pagewrite(FAR struct lpc43_dev_s *priv, FAR uint8_t *dest,
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priv->operands.dest = dest;
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priv->operands.length = nbytes;
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fvdbg("SPIFI_PROGRAM: src=%p dest=%p length=%d\n",
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src, priv->operands.dest, priv->operands.length);
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result = SPIFI_PROGRAM(priv, &priv->rom, src, &priv->operands);
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if (result != 0)
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{
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@ -415,6 +462,19 @@ static int lpc43_pagewrite(FAR struct lpc43_dev_s *priv, FAR uint8_t *dest,
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return -EIO;
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}
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/* Verify the data that was written by comparing to the data visible in the
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* SPIFI address space.
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*/
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#ifdef CONFIG_SPIFI_VERIFY
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result = lpc43_verify(priv, dest, src, nbytes);
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if (result != 0)
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{
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fdbg("ERROR: lpc43_verify failed: %05x\n", result);
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return -EIO;
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}
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#endif
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return OK;
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}
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#endif
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@ -427,6 +487,7 @@ static inline void lpc43_pageread(FAR struct lpc43_dev_s *priv,
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FAR uint8_t *dest, FAR const uint8_t *src,
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size_t nbytes)
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{
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fvdbg("src=%p dest=%p length=%d\n", src, dest, nbytes);
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memcpy(dest, src, nbytes);
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}
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@ -445,6 +506,7 @@ static void lpc43_cacheflush(struct lpc43_dev_s *priv)
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* the cached erase block to FLASH.
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*/
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fvdbg("flags: %02x blkno: %d\n", priv->flags, priv->blkno);
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if (IS_DIRTY(priv) || IS_ERASED(priv))
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{
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/* Get the SPIFI address corresponding to the cached erase block */
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@ -579,6 +641,9 @@ static void lpc43_cachewrite(FAR struct lpc43_dev_s *priv, FAR const uint8_t *bu
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dest = lpc43_cacheread(priv, sector);
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fvdbg("dest=%p src=%p sector: %ld flags: %02x\n",
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dest, buffer, sector, priv->flags);
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/* Erase the block containing this sector if it is not already erased.
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* The erased indicated will be cleared when the data from the erase sector
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* is read into the cache and set here when we erase the sector.
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@ -660,9 +725,11 @@ static ssize_t lpc43_bread(FAR struct mtd_dev_s *dev, off_t startblock, size_t n
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/* On this device, we can handle the block read just like the byte-oriented read */
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nbytes = lpc43_read(dev, startblock << SPIFI_512SHIFT, nblocks << SPIFI_512SHIFT, buffer);
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nbytes = lpc43_read(dev, startblock << SPIFI_512SHIFT,
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nblocks << SPIFI_512SHIFT, buffer);
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if (nbytes > 0)
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{
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lpc43_dumpbuffer(__func__, buffer, nbytes)
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return nbytes >> SPIFI_512SHIFT;
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}
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@ -679,6 +746,7 @@ static ssize_t lpc43_bread(FAR struct mtd_dev_s *dev, off_t startblock, size_t n
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nblocks << SPIFI_BLKSHIFT, buffer);
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if (nbytes > 0)
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{
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lpc43_dumpbuffer(__func__, buffer, nbytes)
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return nbytes >> SPIFI_BLKSHIFT;
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}
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@ -704,6 +772,8 @@ static ssize_t lpc43_bwrite(FAR struct mtd_dev_s *dev, off_t startblock, size_t
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fvdbg("startblock: %08lx nblocks: %d\n", (long)startblock, (int)nblocks);
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lpc43_cachewrite(priv, buffer, startblock, nblocks);
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lpc43_dumpbuffer(__func__, buffer, nblocks << SPIFI_512SHIFT)
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return nblocks;
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#else
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@ -726,6 +796,7 @@ static ssize_t lpc43_bwrite(FAR struct mtd_dev_s *dev, off_t startblock, size_t
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return ret;
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}
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lpc43_dumpbuffer(__func__, buffer, nblocks << SPIFI_BLKSHIFT)
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return nblocks;
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#endif
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@ -92,6 +92,17 @@
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: lpc43_spifi_initialize
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*
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@ -114,6 +125,12 @@
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FAR struct mtd_dev_s *lpc43_spifi_initialize(void);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* CONFIG_LPC43_SPIFI */
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#endif /* __ARCH_ARM_SRC_LPC43XX_LPC43_SPIFI_H */
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