linux/arch/x86/platform/efi/runtime-map.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2013 Red Hat, Inc., Dave Young <[email protected]>
 */

#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/efi.h>
#include <linux/slab.h>

#include <asm/efi.h>
#include <asm/setup.h>

struct efi_runtime_map_entry { … };

static struct efi_runtime_map_entry **map_entries;

struct map_attribute { … };

static inline struct map_attribute *to_map_attr(struct attribute *attr)
{ … }

static ssize_t type_show(struct efi_runtime_map_entry *entry, char *buf)
{ … }

#define EFI_RUNTIME_FIELD(var) …

#define EFI_RUNTIME_U64_ATTR_SHOW(name) …

EFI_RUNTIME_U64_ATTR_SHOW(phys_addr);
EFI_RUNTIME_U64_ATTR_SHOW(virt_addr);
EFI_RUNTIME_U64_ATTR_SHOW(num_pages);
EFI_RUNTIME_U64_ATTR_SHOW(attribute);

static inline struct efi_runtime_map_entry *to_map_entry(struct kobject *kobj)
{ … }

static ssize_t map_attr_show(struct kobject *kobj, struct attribute *attr,
			      char *buf)
{ … }

static struct map_attribute map_type_attr = …;
static struct map_attribute map_phys_addr_attr = …;
static struct map_attribute map_virt_addr_attr = …;
static struct map_attribute map_num_pages_attr = …;
static struct map_attribute map_attribute_attr = …;

/*
 * These are default attributes that are added for every memmap entry.
 */
static struct attribute *def_attrs[] = …;
ATTRIBUTE_GROUPS(…);

static const struct sysfs_ops map_attr_ops = …;

static void map_release(struct kobject *kobj)
{ … }

static const struct kobj_type __refconst map_ktype = …;

static struct kset *map_kset;

static struct efi_runtime_map_entry *
add_sysfs_runtime_map_entry(struct kobject *kobj, int nr,
			    efi_memory_desc_t *md)
{ … }

int efi_get_runtime_map_size(void)
{ … }

int efi_get_runtime_map_desc_size(void)
{ … }

int efi_runtime_map_copy(void *buf, size_t bufsz)
{ … }

static int __init efi_runtime_map_init(void)
{ … }
subsys_initcall_sync(efi_runtime_map_init);