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 <linux/of_fdt.h>
12#include <asm/early_ioremap.h>
13#include <asm/bootinfo.h>
14#include <loongson.h>
15
16u64 efi_system_table;
17unsigned long long smp_group[MAX_PACKAGES];
18struct loongson_system_configuration loongson_sysconf;
19EXPORT_SYMBOL(loongson_sysconf);
20
21static void __init register_addrs_set(u64 *registers, const u64 addr, int num)
22{
23	u64 i;
24
25	for (i = 0; i < num; i++) {
26		*registers = (i << 44) | addr;
27		registers++;
28	}
29}
30
31void __init init_environ(void)
32{
33	int efi_boot = fw_arg0;
34	char *cmdline = early_memremap_ro(fw_arg1, COMMAND_LINE_SIZE);
35
36	if (efi_boot)
37		set_bit(EFI_BOOT, &efi.flags);
38	else
39		clear_bit(EFI_BOOT, &efi.flags);
40
41	strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE);
42	early_memunmap(cmdline, COMMAND_LINE_SIZE);
43
44	efi_system_table = fw_arg2;
45	register_addrs_set(smp_group, TO_UNCACHE(0x1fe01000), 16);
46}
47
48static int __init init_cpu_fullname(void)
49{
50	int cpu;
51
52	if (loongson_sysconf.cpuname && !strncmp(loongson_sysconf.cpuname, "Loongson", 8)) {
53		for (cpu = 0; cpu < NR_CPUS; cpu++)
54			__cpu_full_name[cpu] = loongson_sysconf.cpuname;
55	}
56	return 0;
57}
58arch_initcall(init_cpu_fullname);
59
60static ssize_t boardinfo_show(struct kobject *kobj,
61			      struct kobj_attribute *attr, char *buf)
62{
63	return sprintf(buf,
64		"BIOS Information\n"
65		"Vendor\t\t\t: %s\n"
66		"Version\t\t\t: %s\n"
67		"ROM Size\t\t: %d KB\n"
68		"Release Date\t\t: %s\n\n"
69		"Board Information\n"
70		"Manufacturer\t\t: %s\n"
71		"Board Name\t\t: %s\n"
72		"Family\t\t\t: LOONGSON64\n\n",
73		b_info.bios_vendor, b_info.bios_version,
74		b_info.bios_size, b_info.bios_release_date,
75		b_info.board_vendor, b_info.board_name);
76}
77
78static struct kobj_attribute boardinfo_attr = __ATTR(boardinfo, 0444,
79						     boardinfo_show, NULL);
80
81static int __init boardinfo_init(void)
82{
83	struct kobject *loongson_kobj;
84
85	loongson_kobj = kobject_create_and_add("loongson", firmware_kobj);
86
87	return sysfs_create_file(loongson_kobj, &boardinfo_attr.attr);
88}
89late_initcall(boardinfo_init);
90