setup.c revision a053ac17024561f3a2fd02424b5f92823282b5ad 
1/*
2 *  This program is free software; you can redistribute it and/or modify it
3 *  under the terms of the GNU General Public License version 2 as published
4 *  by the Free Software Foundation.
5 *
6 * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
7 */
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/io.h>
12#include <linux/ioport.h>
13#include <asm/bootinfo.h>
14
15#include <lantiq_soc.h>
16
17#include "machtypes.h"
18#include "devices.h"
19#include "prom.h"
20
21void __init plat_mem_setup(void)
22{
23	/* assume 16M as default incase uboot fails to pass proper ramsize */
24	unsigned long memsize = 16;
25	char **envp = (char **) KSEG1ADDR(fw_arg2);
26
27	ioport_resource.start = IOPORT_RESOURCE_START;
28	ioport_resource.end = IOPORT_RESOURCE_END;
29	iomem_resource.start = IOMEM_RESOURCE_START;
30	iomem_resource.end = IOMEM_RESOURCE_END;
31
32	set_io_port_base((unsigned long) KSEG1);
33
34	while (*envp) {
35		char *e = (char *)KSEG1ADDR(*envp);
36		if (!strncmp(e, "memsize=", 8)) {
37			e += 8;
38			if (strict_strtoul(e, 0, &memsize))
39				pr_warn("bad memsize specified\n");
40		}
41		envp++;
42	}
43	memsize *= 1024 * 1024;
44	add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
45}
46
47static int __init
48lantiq_setup(void)
49{
50	ltq_soc_setup();
51	mips_machine_setup();
52	return 0;
53}
54
55arch_initcall(lantiq_setup);
56
57static void __init
58lantiq_generic_init(void)
59{
60	/* Nothing to do */
61}
62
63MIPS_MACHINE(LTQ_MACH_GENERIC,
64	     "Generic",
65	     "Generic Lantiq based board",
66	     lantiq_generic_init);
67