| /* 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> |
| * 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. |
| #define FIXADDR_SIZE (__end_of_fixed_addresses * PAGE_SIZE) |
| #define FIXADDR_TOP (VMALLOC_START) |
| #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) |
| #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 /* _ASM_RISCV_FIXMAP_H */ |