flash.h

em86xx 完整启动程序,支持网络下载与串通下载

/*****************************************
 Copyright (c) 2003-2004
 Sigma Designs, Inc. All Rights Reserved
 Proprietary and Confidential
 *****************************************/

/* This file is part of the EM86XX boot loader */

/*
 * flash.h
 *
 * by Ho Lee 02/05/2003
 */

#ifndef __BOOTLOADER_FLASH_H
#define __BOOTLOADER_FLASH_H

//
// function prototypes
//

int flash_init(void);

//
// for CFI based flash
//

// error codes

enum { FLASH_OK, FLASH_NOTEXIST, FLASH_NOREGION, FLASH_NOTREADY, FLASH_VERIFY_FAIL, FLASH_WRITE_FAULT };

// constant definitions

#define FLASH_MAX_CHIPSET               2

//
// function prototypes
//

// init & basic
int flash_found(void);
int flash_addr_found(unsigned long addr);
int flash_probe(unsigned int base, int force, int verbose);
unsigned int flash_getsize(void);

// erase
int flash_erase_all(void);
int flash_erase_oneblock(unsigned long addr);
int flash_erase_region(unsigned long addr, unsigned int len);

// read / write
int flash_read_data(unsigned long addr, void *data, int len);
int flash_writable(unsigned long addr, int len);
int flash_write_onebyte(unsigned long addr, unsigned int data);
int flash_write_oneword(unsigned long addr, unsigned int data);
int flash_write_data(unsigned long addr, unsigned char *data, int len);

// miscellaneous
void flash_list(void *vpcfi);
int flash_calcblock(unsigned long addr, unsigned int *pstart, unsigned int *plen);

// test
void flash_test(int argc, char *argv[]);

#endif