1/*
2 * MIPS support for CONFIG_OF device tree support
3 *
4 * Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/init.h>
12#include <linux/export.h>
13#include <linux/errno.h>
14#include <linux/types.h>
15#include <linux/bootmem.h>
16#include <linux/debugfs.h>
17#include <linux/of.h>
18#include <linux/of_fdt.h>
19#include <linux/of_platform.h>
20
21#include <asm/page.h>
22#include <asm/prom.h>
23
24static char mips_machine_name[64] = "Unknown";
25
26__init void mips_set_machine_name(const char *name)
27{
28	if (name == NULL)
29		return;
30
31	strlcpy(mips_machine_name, name, sizeof(mips_machine_name));
32	pr_info("MIPS: machine is %s\n", mips_get_machine_name());
33}
34
35char *mips_get_machine_name(void)
36{
37	return mips_machine_name;
38}
39
40#ifdef CONFIG_OF
41void __init early_init_dt_add_memory_arch(u64 base, u64 size)
42{
43	return add_memory_region(base, size, BOOT_MEM_RAM);
44}
45
46void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
47{
48	return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS));
49}
50
51void __init __dt_setup_arch(void *bph)
52{
53	if (!early_init_dt_scan(bph))
54		return;
55
56	mips_set_machine_name(of_flat_dt_get_machine_name());
57}
58
59int __init __dt_register_buses(const char *bus0, const char *bus1)
60{
61	static struct of_device_id of_ids[3];
62
63	if (!of_have_populated_dt())
64		panic("device tree not present");
65
66	strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
67	if (bus1) {
68		strlcpy(of_ids[1].compatible, bus1,
69			sizeof(of_ids[1].compatible));
70	}
71
72	if (of_platform_populate(NULL, of_ids, NULL, NULL))
73		panic("failed to populate DT");
74
75	return 0;
76}
77
78#endif
79