1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Author: Huacai Chen <chenhuacai@loongson.cn>
4 *
5 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
6 */
7#include <linux/acpi.h>
8#include <linux/clk.h>
9#include <linux/efi.h>
10#include <linux/export.h>
11#include <linux/memblock.h>
12#include <linux/of_clk.h>
13#include <asm/early_ioremap.h>
14#include <asm/bootinfo.h>
15#include <asm/loongson.h>
16#include <asm/setup.h>
17#include <asm/time.h>
18
19u64 efi_system_table;
20struct loongson_system_configuration loongson_sysconf;
21EXPORT_SYMBOL(loongson_sysconf);
22
23void __init init_environ(void)
24{
25	int efi_boot = fw_arg0;
26	char *cmdline = early_memremap_ro(fw_arg1, COMMAND_LINE_SIZE);
27
28	if (efi_boot)
29		set_bit(EFI_BOOT, &efi.flags);
30	else
31		clear_bit(EFI_BOOT, &efi.flags);
32
33	strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE);
34	strscpy(init_command_line, cmdline, COMMAND_LINE_SIZE);
35	early_memunmap(cmdline, COMMAND_LINE_SIZE);
36
37	efi_system_table = fw_arg2;
38}
39
40static int __init init_cpu_fullname(void)
41{
42	struct device_node *root;
43	int cpu, ret;
44	char *model;
45
46	/* Parsing cpuname from DTS model property */
47	root = of_find_node_by_path("/");
48	ret = of_property_read_string(root, "model", (const char **)&model);
49	of_node_put(root);
50	if (ret == 0)
51		loongson_sysconf.cpuname = strsep(&model, " ");
52
53	if (loongson_sysconf.cpuname && !strncmp(loongson_sysconf.cpuname, "Loongson", 8)) {
54		for (cpu = 0; cpu < NR_CPUS; cpu++)
55			__cpu_full_name[cpu] = loongson_sysconf.cpuname;
56	}
57	return 0;
58}
59arch_initcall(init_cpu_fullname);
60
61static int __init fdt_cpu_clk_init(void)
62{
63	struct clk *clk;
64	struct device_node *np;
65
66	np = of_get_cpu_node(0, NULL);
67	if (!np)
68		return -ENODEV;
69
70	clk = of_clk_get(np, 0);
71	if (IS_ERR(clk))
72		return -ENODEV;
73
74	cpu_clock_freq = clk_get_rate(clk);
75	clk_put(clk);
76
77	return 0;
78}
79late_initcall(fdt_cpu_clk_init);
80
81static ssize_t boardinfo_show(struct kobject *kobj,
82			      struct kobj_attribute *attr, char *buf)
83{
84	return sprintf(buf,
85		"BIOS Information\n"
86		"Vendor\t\t\t: %s\n"
87		"Version\t\t\t: %s\n"
88		"ROM Size\t\t: %d KB\n"
89		"Release Date\t\t: %s\n\n"
90		"Board Information\n"
91		"Manufacturer\t\t: %s\n"
92		"Board Name\t\t: %s\n"
93		"Family\t\t\t: LOONGSON64\n\n",
94		b_info.bios_vendor, b_info.bios_version,
95		b_info.bios_size, b_info.bios_release_date,
96		b_info.board_vendor, b_info.board_name);
97}
98
99static struct kobj_attribute boardinfo_attr = __ATTR(boardinfo, 0444,
100						     boardinfo_show, NULL);
101
102static int __init boardinfo_init(void)
103{
104	struct kobject *loongson_kobj;
105
106	loongson_kobj = kobject_create_and_add("loongson", firmware_kobj);
107
108	return sysfs_create_file(loongson_kobj, &boardinfo_attr.attr);
109}
110late_initcall(boardinfo_init);
111