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/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
*/
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <asm/bootinfo.h>
#include <lantiq_soc.h>
#include "prom.h"
void __init plat_mem_setup(void)
{
/* assume 16M as default incase uboot fails to pass proper ramsize */
unsigned long memsize = 16;
char **envp = (char **) KSEG1ADDR(fw_arg2);
ioport_resource.start = IOPORT_RESOURCE_START;
ioport_resource.end = IOPORT_RESOURCE_END;
iomem_resource.start = IOMEM_RESOURCE_START;
iomem_resource.end = IOMEM_RESOURCE_END;
set_io_port_base((unsigned long) KSEG1);
while (*envp) {
char *e = (char *)KSEG1ADDR(*envp);
if (!strncmp(e, "memsize=", 8)) {
e += 8;
if (strict_strtoul(e, 0, &memsize))
pr_warn("bad memsize specified\n");
}
envp++;
}
memsize *= 1024 * 1024;
add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
}
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