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
13 enum 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
23 extern 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
29
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