flashchips.h

Linux下操作Bios的驱动

/*
 * BIOS/Flashrom driver for Linux
 *
 * Copyright (C) 1998-2002 Stefan Reinauer <[e-mail]>
 *
 */

/*
 *   flags structure
 *   bit 0 = needs erase before write (f_needs_erase)
 *   bit 1-3 flash manu type
 *   bit 4-6 probably needed for more manu
 *   bit 7 = sector erase happens one sector at a time
 *           (f_slow_sector_erase)
 */

#define f_needs_erase   0x01

/* 3 bit for flashtype */
#define f_manuf_compl   0x0e /* Mask out bits 1-3 */
#define f_intel_compl   0x02 /* 001 */
#define f_atmel_compl   0x04 /* 010 */
#define f_fwh_compl     0x08 /* 100 */

#define f_slow_sector_erase 0x80

struct flashdevice {
	unsigned char	*mapped;
	unsigned char   *physical;
	unsigned long   offset;
	unsigned int	flashnum, manufnum;
	unsigned short	id;
	unsigned int	size, sectors;
	int		(*activate)(int cmd, void *data);
	void		*data;
	int		open_mode, open_cnt;
};

struct flashchip {
	char		*name;
	unsigned short	id;
	unsigned int	voltage;
	unsigned int	size;		/* KBytes */
	unsigned int	supported;
	unsigned int	pagesize;	/* Bytes */
	unsigned int	flags;
	unsigned int	*sectors;	/* Kbytes[] including end of last sector */
};

struct manufacturer {
	char		*name;
	unsigned short	id;
};

extern struct flashdevice  flashdevices[BIOS_MAXDEV];

extern const struct flashchip flashchips[];
extern const struct manufacturer manufacturers[];