电子技术论坛_中国专业的电子工程师学习交流社区-中电网技术论坛

标题: 读写SPI FLASH--驱动部分（2） [打印本页]

作者: yuyang911220 时间: 2015-2-27 09:06 标题: 读写SPI FLASH--驱动部分（2）

/*****************************spi.h*************************************/
#ifndef _SPI_H_
#define _SPI_H_

#include <linux/cdev.h>
#include <linux/types.h>

#define DRIVERNAME "spi_char"
#define MAJOR_NO 252
#define MINOR_NO 0
/* #define SPI_DEBUG */

/* pci configuration */
#define SPI_VENDOR_ID 0x8086
#define SPI_DEVICE_ID 0x5031

/* spi space */
#define CRBA_BAR 0xF0
#define BIOS_CTRL 0xDC
#define SPI_BAR_OFFSET 0x3020
#define SPI_MEM_SIZE 112
#define SPI_FLASH_SIZE 2048*1024
#define SPI_FLASH_SECTOR_BIT 12
#define SPI_FLASH_SECTOR_SIZE 0x1000

/* spi registers */
#define SPI_STATUS 0x00
#define SPI_CTRL 0x02
#define SPI_ADDR 0x04
#define SPI_DATA0 0x08
#define SPI_OPTYPE 0x56
#define SPI_OPMENU 0x58
#define SPI_PREOP 0x54
#define SPI_BBAR 0x50
#define SPI_PBAR0 0x60

/* spi opcode */
#define SPI_WR_STATUS 0x01
#define SPI_RD_STATUS 0x05
#define SPI_WR_DATA 0x02
#define SPI_RD_DATA 0x03
#define SPI_WR_ENABLE 0x06
#define SPI_WSR_ENABLE 0x50
#define SPI_4K_ERASE 0x20
#define SPI_WR_DISABLE 0x04
#define SPI_CHIP_ERASE 0x60

/* spi opcode type */
#define SPI_OPTYPE_WIDTH 0x02
#define SPI_RD_NOADDR 0x00
#define SPI_WR_NOADDR 0x01
#define SPI_RD_ADDR 0x02
#define SPI_WR_ADDR 0x03

/* bit definition */
#define SPI_STATUS_SCIP 0x01
#define SPI_STATUS_CDS 0x04
#define SPI_STATUS_BAS 0x08
#define SPI_STATUS_CFG_LOCK 0x8000

#define SPI_CTRL_SCGO 0x02
#define SPI_CTRL_ACS 0x04
#define SPI_CTRL_SPOP 0x08
#define SPI_CTRL_COP 0x70
#define SPI_CTRL_COP_SHIFT 0x4
#define SPI_CTRL_DC 0x4000
#define SPI_CTRL_DBC 0x3f00
#define SPI_CTRL_DBC_SHIFT 0x8

#define SPI_CTRL_OPMENU_RD 0x00
#define SPI_CTRL_OPMENU_RDSR 0x01
#define SPI_CTRL_OPMENU_WR 0x02
#define SPI_CTRL_OPMENU_WRSR 0x03
#define SPI_CTRL_OPMENU_4KERASE 0x04
#define SPI_CTRL_OPMENU_CHIPERASE 0x05

#define SPI_FLASH_PROTECTION 0x3C
#define BIOS_NOPROTECTION 0x01

#define SPI_IOCTL_BASE 0xDE
#define IOCTL_ERASE_CHIP _IOWR(SPI_IOCTL_BASE, 0, ioctl_arg_t)
#define IOCTL_ERASE_BLOCK _IOWR(SPI_IOCTL_BASE, 1, ioctl_arg_t)

欢迎光临电子技术论坛_中国专业的电子工程师学习交流社区-中电网技术论坛 (http://bbs.eccn.com/)