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| 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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