memfuncs.c

QNX ADS BSP code for i.MX27 chips

/*
 * $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. 
 * $
 */
 
 /*
 * memfuncs.c
 *	Convert between virtual and physical addressing
 */
#include <string.h>
#include "startup.h"


void
copy_memory(paddr32_t dst, paddr32_t src, size_t len) {
	uint8_t		*d;
	uint8_t		*s;
	unsigned	max;
	unsigned	amount;

	max = (lsp.mdriver.size > 0) ? mdriver_max : len;
	for( ;; ) {
		mdriver_check();
		amount = (len > max) ? max : len;

		// We make the assumption that the destination is going to
		// be in the one-to-one mapping area.
		d = MAKE_1TO1_PTR(dst);
		s = startup_memory_map(amount, src, PROT_READ);
		memmove(d, s, amount);
		startup_memory_unmap(s);
		len -= amount;
		if(len == 0) break;
		src += amount;
		dst += amount;
	}	
}