Hi all,
Can any one tell me what's meaning of the variables in the struct nand_flash_dev mean at /..../u-boot/include/linux/mtd/Nand.h.

struct nand_flash_dev{
char *name;
int manufacture_id;
int model_id;
int chipshift;
int pagesize;
char pageadrlen;      //this one
unsigned long erasesize;
char columnadrlen;    //this one
char large_blocks;     //and this one
int bus16;};