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// 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/efi.h>
#include <linux/export.h>
#include <linux/memblock.h>
#include <linux/of_fdt.h>
#include <asm/early_ioremap.h>
#include <asm/bootinfo.h>
#include <asm/loongson.h>
u64 efi_system_table;
struct loongson_system_configuration loongson_sysconf;
EXPORT_SYMBOL(loongson_sysconf);
u64 loongson_chipcfg[MAX_PACKAGES];
u64 loongson_chiptemp[MAX_PACKAGES];
u64 loongson_freqctrl[MAX_PACKAGES];
unsigned long long smp_group[MAX_PACKAGES];
static void __init register_addrs_set(u64 *registers, const u64 addr, int num)
{
u64 i;
for (i = 0; i < num; i++) {
*registers = (i << 44) | addr;
registers++;
}
}
void __init init_environ(void)
{
int efi_boot = fw_arg0;
struct efi_memory_map_data data;
void *fdt_ptr = early_memremap_ro(fw_arg1, SZ_64K);
if (efi_boot)
set_bit(EFI_BOOT, &efi.flags);
else
clear_bit(EFI_BOOT, &efi.flags);
early_init_dt_scan(fdt_ptr);
early_init_fdt_reserve_self();
efi_system_table = efi_get_fdt_params(&data);
efi_memmap_init_early(&data);
memblock_reserve(data.phys_map & PAGE_MASK,
PAGE_ALIGN(data.size + (data.phys_map & ~PAGE_MASK)));
register_addrs_set(smp_group, TO_UNCACHE(0x1fe01000), 16);
register_addrs_set(loongson_chipcfg, TO_UNCACHE(0x1fe00180), 16);
register_addrs_set(loongson_chiptemp, TO_UNCACHE(0x1fe0019c), 16);
register_addrs_set(loongson_freqctrl, TO_UNCACHE(0x1fe001d0), 16);
}
static int __init init_cpu_fullname(void)
{
int cpu;
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 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);
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