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/export.h>
10#include <linux/clk.h>
11#include <linux/bootmem.h>
12#include <linux/of_platform.h>
13#include <linux/of_fdt.h>
14
15#include <asm/bootinfo.h>
16#include <asm/time.h>
17#include <asm/prom.h>
18
19#include <lantiq.h>
20
21#include "prom.h"
22#include "clk.h"
23
24/* access to the ebu needs to be locked between different drivers */
25DEFINE_SPINLOCK(ebu_lock);
26EXPORT_SYMBOL_GPL(ebu_lock);
27
28/*
29 * this struct is filled by the soc specific detection code and holds
30 * information about the specific soc type, revision and name
31 */
32static struct ltq_soc_info soc_info;
33
34const char *get_system_type(void)
35{
36	return soc_info.sys_type;
37}
38
39int ltq_soc_type(void)
40{
41	return soc_info.type;
42}
43
44void __init prom_free_prom_memory(void)
45{
46}
47
48static void __init prom_init_cmdline(void)
49{
50	int argc = fw_arg0;
51	char **argv = (char **) KSEG1ADDR(fw_arg1);
52	int i;
53
54	arcs_cmdline[0] = '\0';
55
56	for (i = 0; i < argc; i++) {
57		char *p = (char *) KSEG1ADDR(argv[i]);
58
59		if (CPHYSADDR(p) && *p) {
60			strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
61			strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
62		}
63	}
64}
65
66void __init plat_mem_setup(void)
67{
68	ioport_resource.start = IOPORT_RESOURCE_START;
69	ioport_resource.end = IOPORT_RESOURCE_END;
70	iomem_resource.start = IOMEM_RESOURCE_START;
71	iomem_resource.end = IOMEM_RESOURCE_END;
72
73	set_io_port_base((unsigned long) KSEG1);
74
75	/*
76	 * Load the builtin devicetree. This causes the chosen node to be
77	 * parsed resulting in our memory appearing
78	 */
79	__dt_setup_arch(__dtb_start);
80
81	strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
82}
83
84void __init device_tree_init(void)
85{
86	unflatten_and_copy_device_tree();
87}
88
89void __init prom_init(void)
90{
91	/* call the soc specific detetcion code and get it to fill soc_info */
92	ltq_soc_detect(&soc_info);
93	snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s",
94		soc_info.name, soc_info.rev_type);
95	soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
96	pr_info("SoC: %s\n", soc_info.sys_type);
97	prom_init_cmdline();
98
99#if defined(CONFIG_MIPS_MT_SMP)
100	if (register_vsmp_smp_ops())
101		panic("failed to register_vsmp_smp_ops()");
102#endif
103}
104
105int __init plat_of_setup(void)
106{
107	return __dt_register_buses(soc_info.compatible, "simple-bus");
108}
109
110arch_initcall(plat_of_setup);
111