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