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