Orange Pi5 kernel

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2019 Western Digital Corporation or its affiliates.
 */
 
#ifndef _ASM_RISCV_FIXMAP_H
#define _ASM_RISCV_FIXMAP_H
 
#include <linux/kernel.h>
#include <linux/sizes.h>
#include <linux/pgtable.h>
#include <asm/page.h>
 
#ifdef CONFIG_MMU
/*
 * Here we define all the compile-time 'special' virtual addresses.
 * The point is to have a constant address at compile time, but to
 * set the physical address only in the boot process.
 *
 * These 'compile-time allocated' memory buffers are page-sized. Use
 * set_fixmap(idx,phys) to associate physical memory with fixmap indices.
 */
enum fixed_addresses {
<------>FIX_HOLE,
<------>FIX_PTE,
<------>FIX_PMD,
<------>FIX_TEXT_POKE1,
<------>FIX_TEXT_POKE0,
<------>FIX_EARLYCON_MEM_BASE,
 
<------>__end_of_permanent_fixed_addresses,
<------>/*
<------> * Temporary boot-time mappings, used by early_ioremap(),
<------> * before ioremap() is functional.
<------> */
#define NR_FIX_BTMAPS		(SZ_256K / PAGE_SIZE)
#define FIX_BTMAPS_SLOTS	7
#define TOTAL_FIX_BTMAPS	(NR_FIX_BTMAPS * FIX_BTMAPS_SLOTS)
 
<------>FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
<------>FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,
 
<------>__end_of_fixed_addresses
};
 
#define FIXMAP_PAGE_IO		PAGE_KERNEL
 
#define __early_set_fixmap	__set_fixmap
 
#define __late_set_fixmap	__set_fixmap
#define __late_clear_fixmap(idx) __set_fixmap((idx), 0, FIXMAP_PAGE_CLEAR)
 
extern void __set_fixmap(enum fixed_addresses idx,
<------><------><------> phys_addr_t phys, pgprot_t prot);
 
#include <asm-generic/fixmap.h>
 
#endif /* CONFIG_MMU */
#endif /* _ASM_RISCV_FIXMAP_H */