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/* SPDX-License-Identifier: GPL-2.0 */
/*
* fixmap.h: compile-time virtual memory allocation
*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#ifndef _ASM_FIXMAP_H
#define _ASM_FIXMAP_H
#ifdef CONFIG_HIGHMEM
#include <linux/threads.h>
#include <asm/kmap_size.h>
#endif
#define NR_FIX_BTMAPS 64
enum fixed_addresses {
FIX_HOLE,
#ifdef CONFIG_HIGHMEM
FIX_KMAP_BEGIN,
FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * NR_CPUS) - 1,
#endif
FIX_EARLYCON_MEM_BASE,
__end_of_fixed_addresses
};
#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
#define FIXMAP_PAGE_IO PAGE_KERNEL_SUC
extern void __set_fixmap(enum fixed_addresses idx,
phys_addr_t phys, pgprot_t flags);
#include <asm-generic/fixmap.h>
/*
* Called from pagetable_init()
*/
extern void fixrange_init(unsigned long start, unsigned long end, pgd_t *pgd_base);
#endif
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