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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright MontaVista Software Inc
* Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
* Copyright (C) 2006 FON Technology, SL.
* Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
*/
/*
* Prom setup file for ar531x
*/
#include <linux/init.h>
#include <linux/autoconf.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include "ar531x.h"
void __init prom_init(void)
{
u32 memsize, memcfg;
mips_machgroup = MACH_GROUP_ATHEROS;
mips_machtype = -1;
/*
* Atheros CPUs before the AR2315 are using MIPS 4Kc core, later designs are
* using MIPS 4KEc R2 core. This makes it easy to determine the board at runtime.
*/
if (current_cpu_data.cputype == CPU_4KEC) {
mips_machtype = MACH_ATHEROS_AR5315;
memcfg = sysRegRead(AR5315_MEM_CFG);
memsize = 1 + ((memcfg & SDRAM_DATA_WIDTH_M) >> SDRAM_DATA_WIDTH_S);
memsize <<= 1 + ((memcfg & SDRAM_COL_WIDTH_M) >> SDRAM_COL_WIDTH_S);
memsize <<= 1 + ((memcfg & SDRAM_ROW_WIDTH_M) >> SDRAM_ROW_WIDTH_S);
memsize <<= 3;
} else {
int bank0AC, bank1AC;
mips_machtype = MACH_ATHEROS_AR5312;
memcfg = sysRegRead(AR531X_MEM_CFG1);
bank0AC = (memcfg & MEM_CFG1_AC0) >> MEM_CFG1_AC0_S;
bank1AC = (memcfg & MEM_CFG1_AC1) >> MEM_CFG1_AC1_S;
memsize = (bank0AC ? (1 << (bank0AC+1)) : 0)
+ (bank1AC ? (1 << (bank1AC+1)) : 0);
memsize <<= 20;
}
add_memory_region(0, memsize, BOOT_MEM_RAM);
strcpy(arcs_cmdline, "console=ttyS0,9600 rootfstype=squashfs,jffs2");
}
void __init prom_free_prom_memory(void)
{
}
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