fixmap.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * fixmap.h: compile-time virtual memory allocation
 4 *
 5 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
 6 */
 7
 8#ifndef _ASM_FIXMAP_H
 9#define _ASM_FIXMAP_H
10
11#define NR_FIX_BTMAPS 64
12
13enum fixed_addresses {
14	FIX_HOLE,
15	FIX_EARLYCON_MEM_BASE,
16	__end_of_fixed_addresses
17};
18
19#define FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)
20#define FIXADDR_START	(FIXADDR_TOP - FIXADDR_SIZE)
21#define FIXMAP_PAGE_IO	PAGE_KERNEL_SUC
22
23extern void __set_fixmap(enum fixed_addresses idx,
24			 phys_addr_t phys, pgprot_t flags);
25
26#include <asm-generic/fixmap.h>
27
28#endif