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/module.h>
10#include <linux/clk.h>
 
 
 
 
11#include <asm/bootinfo.h>
12#include <asm/time.h>
 
13
14#include <lantiq.h>
15
16#include "prom.h"
17#include "clk.h"
18
 
 
 
 
 
 
 
 
19static struct ltq_soc_info soc_info;
20
21unsigned int ltq_get_cpu_ver(void)
22{
23	return soc_info.rev;
24}
25EXPORT_SYMBOL(ltq_get_cpu_ver);
26
27unsigned int ltq_get_soc_type(void)
28{
29	return soc_info.type;
30}
31EXPORT_SYMBOL(ltq_get_soc_type);
32
33const char *get_system_type(void)
34{
35	return soc_info.sys_type;
36}
37
38void prom_free_prom_memory(void)
39{
40}
41
42static void __init prom_init_cmdline(void)
43{
44	int argc = fw_arg0;
45	char **argv = (char **) KSEG1ADDR(fw_arg1);
46	int i;
47
 
 
48	for (i = 0; i < argc; i++) {
49		char *p = (char *)  KSEG1ADDR(argv[i]);
50
51		if (p && *p) {
52			strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
53			strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
54		}
55	}
56}
57
58void __init prom_init(void)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
59{
60	struct clk *clk;
61
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
62	ltq_soc_detect(&soc_info);
63	clk_init();
64	clk = clk_get(0, "cpu");
65	snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev1.%d",
66		soc_info.name, soc_info.rev);
67	clk_put(clk);
68	soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
69	pr_info("SoC: %s\n", soc_info.sys_type);
70	prom_init_cmdline();
 
 
 
 
 
71}

  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
 39void prom_free_prom_memory(void)
 40{
 41}
 42
 43static void __init prom_init_cmdline(void)
 44{
 45	int argc = fw_arg0;
 46	char **argv = (char **) KSEG1ADDR(fw_arg1);
 47	int i;
 48
 49	arcs_cmdline[0] = '\0';
 50
 51	for (i = 0; i < argc; i++) {
 52		char *p = (char *) KSEG1ADDR(argv[i]);
 53
 54		if (CPHYSADDR(p) && *p) {
 55			strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
 56			strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
 57		}
 58	}
 59}
 60
 61void __init plat_mem_setup(void)
 62{
 63	ioport_resource.start = IOPORT_RESOURCE_START;
 64	ioport_resource.end = IOPORT_RESOURCE_END;
 65	iomem_resource.start = IOMEM_RESOURCE_START;
 66	iomem_resource.end = IOMEM_RESOURCE_END;
 67
 68	set_io_port_base((unsigned long) KSEG1);
 69
 70	/*
 71	 * Load the builtin devicetree. This causes the chosen node to be
 72	 * parsed resulting in our memory appearing
 73	 */
 74	__dt_setup_arch(&__dtb_start);
 75}
 76
 77void __init device_tree_init(void)
 78{
 79	unsigned long base, size;
 80
 81	if (!initial_boot_params)
 82		return;
 83
 84	base = virt_to_phys((void *)initial_boot_params);
 85	size = be32_to_cpu(initial_boot_params->totalsize);
 86
 87	/* Before we do anything, lets reserve the dt blob */
 88	reserve_bootmem(base, size, BOOTMEM_DEFAULT);
 89
 90	unflatten_device_tree();
 91}
 92
 93void __init prom_init(void)
 94{
 95	/* call the soc specific detetcion code and get it to fill soc_info */
 96	ltq_soc_detect(&soc_info);
 97	snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s",
 98		soc_info.name, soc_info.rev_type);
 
 
 
 99	soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
100	pr_info("SoC: %s\n", soc_info.sys_type);
101	prom_init_cmdline();
102
103#if defined(CONFIG_MIPS_MT_SMP)
104	if (register_vsmp_smp_ops())
105		panic("failed to register_vsmp_smp_ops()");
106#endif
107}
108
109int __init plat_of_setup(void)
110{
111	static struct of_device_id of_ids[3];
112
113	if (!of_have_populated_dt())
114		panic("device tree not present");
115
116	strlcpy(of_ids[0].compatible, soc_info.compatible,
117		sizeof(of_ids[0].compatible));
118	strncpy(of_ids[1].compatible, "simple-bus",
119		sizeof(of_ids[1].compatible));
120	return of_platform_populate(NULL, of_ids, NULL, NULL);
121}
122
123arch_initcall(plat_of_setup);