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/efi.h>
9 #include <linux/export.h>
10 #include <linux/memblock.h>
11 #include <asm/early_ioremap.h>
12 #include <asm/bootinfo.h>
13 #include <asm/loongson.h>
14
15 u64 efi_system_table;
16 struct loongson_system_configuration loongson_sysconf;
17 EXPORT_SYMBOL(loongson_sysconf);
18
init_environ(void)19 void __init init_environ(void)
20 {
21 int efi_boot = fw_arg0;
22 char *cmdline = early_memremap_ro(fw_arg1, COMMAND_LINE_SIZE);
23
24 if (efi_boot)
25 set_bit(EFI_BOOT, &efi.flags);
26 else
27 clear_bit(EFI_BOOT, &efi.flags);
28
29 strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE);
30 early_memunmap(cmdline, COMMAND_LINE_SIZE);
31
32 efi_system_table = fw_arg2;
33 }
34
init_cpu_fullname(void)35 static int __init init_cpu_fullname(void)
36 {
37 int cpu;
38
39 if (loongson_sysconf.cpuname && !strncmp(loongson_sysconf.cpuname, "Loongson", 8)) {
40 for (cpu = 0; cpu < NR_CPUS; cpu++)
41 __cpu_full_name[cpu] = loongson_sysconf.cpuname;
42 }
43 return 0;
44 }
45 arch_initcall(init_cpu_fullname);
46
boardinfo_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)47 static ssize_t boardinfo_show(struct kobject *kobj,
48 struct kobj_attribute *attr, char *buf)
49 {
50 return sprintf(buf,
51 "BIOS Information\n"
52 "Vendor\t\t\t: %s\n"
53 "Version\t\t\t: %s\n"
54 "ROM Size\t\t: %d KB\n"
55 "Release Date\t\t: %s\n\n"
56 "Board Information\n"
57 "Manufacturer\t\t: %s\n"
58 "Board Name\t\t: %s\n"
59 "Family\t\t\t: LOONGSON64\n\n",
60 b_info.bios_vendor, b_info.bios_version,
61 b_info.bios_size, b_info.bios_release_date,
62 b_info.board_vendor, b_info.board_name);
63 }
64
65 static struct kobj_attribute boardinfo_attr = __ATTR(boardinfo, 0444,
66 boardinfo_show, NULL);
67
boardinfo_init(void)68 static int __init boardinfo_init(void)
69 {
70 struct kobject *loongson_kobj;
71
72 loongson_kobj = kobject_create_and_add("loongson", firmware_kobj);
73
74 return sysfs_create_file(loongson_kobj, &boardinfo_attr.attr);
75 }
76 late_initcall(boardinfo_init);
77
