forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
1.8 KiB
72 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* EFI initialization |
|
* |
|
* Author: Jianmin Lv <[email protected]> |
|
* Huacai Chen <[email protected]> |
|
* |
|
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited |
|
*/ |
|
|
|
#include <linux/acpi.h> |
|
#include <linux/efi.h> |
|
#include <linux/efi-bgrt.h> |
|
#include <linux/init.h> |
|
#include <linux/kernel.h> |
|
#include <linux/export.h> |
|
#include <linux/io.h> |
|
#include <linux/kobject.h> |
|
#include <linux/memblock.h> |
|
#include <linux/reboot.h> |
|
#include <linux/uaccess.h> |
|
|
|
#include <asm/early_ioremap.h> |
|
#include <asm/efi.h> |
|
#include <asm/loongson.h> |
|
|
|
static unsigned long efi_nr_tables; |
|
static unsigned long efi_config_table; |
|
|
|
static efi_system_table_t *efi_systab; |
|
static efi_config_table_type_t arch_tables[] __initdata = {{},}; |
|
|
|
void __init efi_runtime_init(void) |
|
{ |
|
if (!efi_enabled(EFI_BOOT)) |
|
return; |
|
|
|
if (efi_runtime_disabled()) { |
|
pr_info("EFI runtime services will be disabled.\n"); |
|
return; |
|
} |
|
|
|
efi.runtime = (efi_runtime_services_t *)efi_systab->runtime; |
|
efi.runtime_version = (unsigned int)efi.runtime->hdr.revision; |
|
|
|
efi_native_runtime_setup(); |
|
set_bit(EFI_RUNTIME_SERVICES, &efi.flags); |
|
} |
|
|
|
void __init efi_init(void) |
|
{ |
|
int size; |
|
void *config_tables; |
|
|
|
if (!efi_system_table) |
|
return; |
|
|
|
efi_systab = (efi_system_table_t *)early_memremap_ro(efi_system_table, sizeof(*efi_systab)); |
|
if (!efi_systab) { |
|
pr_err("Can't find EFI system table.\n"); |
|
return; |
|
} |
|
|
|
set_bit(EFI_64BIT, &efi.flags); |
|
efi_nr_tables = efi_systab->nr_tables; |
|
efi_config_table = (unsigned long)efi_systab->tables; |
|
|
|
size = sizeof(efi_config_table_t); |
|
config_tables = early_memremap(efi_config_table, efi_nr_tables * size); |
|
efi_config_parse_tables(config_tables, efi_systab->nr_tables, arch_tables); |
|
early_memunmap(config_tables, efi_nr_tables * size); |
|
}
|
|
|