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Add support for M25P1

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2698 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-05-26 12:39:06 +00:00
parent 07634ecb5d
commit 03295ded37
1 changed files with 22 additions and 1 deletions
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23
drivers/mtd/m25px.c
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@ -59,9 +59,20 @@
#define M25P_MANUFACTURER 0x20
#define M25P_MEMORY_TYPE 0x20
#define M25P_M25P1_CAPACITY 0x11 /* 1 M-bit */
#define M25P_M25P64_CAPACITY 0x17 /* 64 M-bit */
#define M25P_M25P128_CAPACITY 0x18 /* 128 M-bit */
/* M25P1 capapcity is 131,072 bytes:
* (4 sectors) * (32,768 bytes per sector)
* (512 pages) * (256 bytes per page)
*/
#define M25P_M25P1_SECTOR_SHIFT 15 /* Sector size 1 << 15 = 65,536 */
#define M25P_M25P1_NSECTORS 4
#define M25P_M25P1_PAGE_SHIFT 8 /* Page size 1 << 8 = 256 */
#define M25P_M25P1_NPAGES 512
/* M25P64 capapcity is 8,338,608 bytes:
* (128 sectors) * (65,536 bytes per sector)
* (32768 pages) * (256 bytes per page)
@ -244,7 +255,17 @@ static inline int m25p_readid(struct m25p_dev_s *priv)
{
/* Okay.. is it a FLASH capacity that we understand? */
if (capacity == M25P_M25P64_CAPACITY)
if (capacity == M25P_M25P1_CAPACITY)
{
/* Save the FLASH geometry */
priv->sectorshift = M25P_M25P1_SECTOR_SHIFT;
priv->nsectors = M25P_M25P1_NSECTORS;
priv->pageshift = M25P_M25P1_PAGE_SHIFT;
priv->npages = M25P_M25P1_NPAGES;
return OK;
}
else if (capacity == M25P_M25P64_CAPACITY)
{
/* Save the FLASH geometry */