a29f040_reset.c

qnx powerpc MPC8245的 BSP源文件

/*
 * $QNXLicenseC: 
 * Copyright 2007, QNX Software Systems.  
 *  
 * Licensed under the Apache License, Version 2.0 (the "License"). You  
 * may not reproduce, modify or distribute this software except in  
 * compliance with the License. You may obtain a copy of the License  
 * at: http://www.apache.org/licenses/LICENSE-2.0  
 *  
 * Unless required by applicable law or agreed to in writing, software  
 * distributed under the License is distributed on an "AS IS" basis,  
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied. 
 * 
 * This file may contain contributions from others, either as  
 * contributors under the License or as licensors under other terms.   
 * Please review this entire file for other proprietary rights or license  
 * notices, as well as the QNX Development Suite License Guide at  
 * http://licensing.qnx.com/license-guide/ for other information. 
 * $ 
 */


#include <pthread.h>
#include <sys/f3s_mtd.h>

/*
 * Summary
 *
 * MTD Version: 1 and 2
 * Bus Width:   8-bit and 16-bit
 *
 * Description
 *
 * This is the only reset callout for AMD flash.
 */

void f3s_a29f040_reset(f3s_dbase_t *dbase,
                       f3s_access_t *access,
                       uint32_t flags,
                       uint32_t offset)
{
	volatile uint8_t *	memory;

	/* set proper page on socket */
	memory = access->service->page(&access->socket, F3S_POWER_ALL, offset & amd_command_mask, NULL);
	if (memory == NULL) {
		fprintf(stderr, "(devf  t%d::%s:%d) page() returned NULL for offset 0x%x\n",
					pthread_self(), __func__, __LINE__, offset);
		return;
	}

	/* go back to read mode */
	send_command(memory, AMD_READ_MODE);
}