original_kernel/arch/ppc/boot/simple/cpc700_memory.c

35 lines
705 B
C

/*
* Find memory based upon settings in the CPC700 bridge
*
* Author: Dan Cox
*
* 2001-2002 (c) MontaVista, Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <asm/types.h>
#include <asm/io.h>
#include "cpc700.h"
unsigned long
cpc700_get_mem_size(void)
{
int i;
unsigned long len, amt;
/* Start at MB1EA, since MB0EA will most likely be the ending address
for ROM space. */
for(len = 0, i = CPC700_MB1EA; i <= CPC700_MB4EA; i+=4) {
amt = cpc700_read_memreg(i);
if (amt == 0)
break;
len = amt;
}
return len;
}