flash.h

arm_bootloader _flash writter &USB

#ifndef __FLASH_H__
#define __FLASH_H__

// Flash Command
#define NAND_FLASH_CMD_RDID         (0x90)
#define NAND_FLASH_CMD_READ_STATUS  (0x70)
#define NAND_FLASH_CMD_ERASE0       (0x60)
#define NAND_FLASH_CMD_ERASE1       (0xD0)
#define NAND_FLASH_CMD_PAGE_PROG0   (0x80)
#define NAND_FLASH_CMD_PAGE_PROG1   (0x10)
#define NAND_FLASH_CMD_READ         (0x00)

// Constant
#define FLASH_SUCCESS   (1)
#define FLASH_FAIL      (0)

// Data structure
typedef struct flash_mem
{
    unsigned int column;    // A[7:0]
    unsigned int half;      // A[8]
    unsigned int row;       // A[25:9]
    unsigned int linear_addr;
} flash_mem;

// Function prototype
void NandBoot(void);
void Flash_fill_mem_addr(unsigned int linear_addr, flash_mem *f_addr);
int Flash_ReadPage(flash_mem *f_addr, unsigned char *data);
int Flash_WritePage(flash_mem *f_addr, unsigned char *data);
int Flash_EraseBlock(flash_mem *f_addr);
unsigned char Flash_ReadStatus(void);
unsigned int Flash_ReadID(void);
void Flash_init(void);

#endif // __FLASH_H__