diff options
Diffstat (limited to 'include/linux/mtd')
| -rw-r--r-- | include/linux/mtd/doc2000.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/include/linux/mtd/doc2000.h b/include/linux/mtd/doc2000.h index ebf9a76..eeb1d7e 100644 --- a/include/linux/mtd/doc2000.h +++ b/include/linux/mtd/doc2000.h @@ -91,6 +91,13 @@ struct DiskOnChip; #define ADDR_PAGE 2 #define ADDR_COLUMN_PAGE 3 +struct Nand { + char floor, chip; + unsigned long curadr; + unsigned char curmode; + /* Also some erase/write/pipeline info when we get that far */ +}; + struct DiskOnChip { unsigned long physadr; unsigned long virtadr; @@ -148,4 +155,62 @@ void doc_probe(unsigned long physadr); void doc_print(struct DiskOnChip*); +/* + * Standard NAND flash commands + */ +#define NAND_CMD_READ0 0 +#define NAND_CMD_READ1 1 +#define NAND_CMD_PAGEPROG 0x10 +#define NAND_CMD_READOOB 0x50 +#define NAND_CMD_ERASE1 0x60 +#define NAND_CMD_STATUS 0x70 +#define NAND_CMD_SEQIN 0x80 +#define NAND_CMD_READID 0x90 +#define NAND_CMD_ERASE2 0xd0 +#define NAND_CMD_RESET 0xff + +/* + * NAND Flash Manufacturer ID Codes + */ +#define NAND_MFR_TOSHIBA 0x98 +#define NAND_MFR_SAMSUNG 0xec + +/* + * NAND Flash Device ID Structure + * + * Structure overview: + * + * name - Complete name of device + * + * manufacture_id - manufacturer ID code of device. + * + * model_id - model ID code of device. + * + * chipshift - total number of address bits for the device which + * is used to calculate address offsets and the total + * number of bytes the device is capable of. + * + * page256 - denotes if flash device has 256 byte pages or not. + * + * pageadrlen - number of bytes minus one needed to hold the + * complete address into the flash array. Keep in + * mind that when a read or write is done to a + * specific address, the address is input serially + * 8 bits at a time. This structure member is used + * by the read/write routines as a loop index for + * shifting the address out 8 bits at a time. + * + * erasesize - size of an erase block in the flash device. + */ +struct nand_flash_dev { + char * name; + int manufacture_id; + int model_id; + int chipshift; + char page256; + char pageadrlen; + unsigned long erasesize; + int bus16; +}; + #endif /* __MTD_DOC2000_H__ */ |