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/*
* arch/ppc/boot/simple/misc-cpci690.c
*
* Add birec data for Force CPCI690 board.
*
* Author: Mark A. Greer <source@mvista.com>
*
* 2003 (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 <linux/types.h>
#include <asm/io.h>
#include <platforms/cpci690.h>
#define KB (1024UL)
#define MB (1024UL*KB)
#define GB (1024UL*MB)
extern u32 mv64x60_console_baud;
extern u32 mv64x60_mpsc_clk_src;
extern u32 mv64x60_mpsc_clk_freq;
u32 mag = 0xffff;
unsigned long
get_mem_size(void)
{
u32 size;
switch (in_8(((void __iomem *)CPCI690_BR_BASE + CPCI690_BR_MEM_CTLR))
& 0x07) {
case 0x01:
size = 256*MB;
break;
case 0x02:
size = 512*MB;
break;
case 0x03:
size = 768*MB;
break;
case 0x04:
size = 1*GB;
break;
case 0x05:
size = 1*GB + 512*MB;
break;
case 0x06:
size = 2*GB;
break;
default:
size = 0;
}
return size;
}
void
mv64x60_board_init(void __iomem *old_base, void __iomem *new_base)
{
mv64x60_console_baud = CPCI690_MPSC_BAUD;
mv64x60_mpsc_clk_src = CPCI690_MPSC_CLK_SRC;
mv64x60_mpsc_clk_freq =
(get_mem_size() >= (1*GB)) ? 100000000 : 133333333;
}
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