| /* SPDX-License-Identifier: GPL-2.0-or-later */ | |
| /* | |
| * OpenRISC Linux | |
| * | |
| * Linux architectural port borrowing liberally from similar works of | |
| * others. All original copyrights apply as per the original source | |
| * declaration. | |
| * | |
| * OpenRISC implementation: | |
| * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> | |
| * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> | |
| * et al. | |
| */ | |
| #ifndef __ASM_OPENRISC_FIXMAP_H | |
| #define __ASM_OPENRISC_FIXMAP_H | |
| /* Why exactly do we need 2 empty pages between the top of the fixed | |
| * addresses and the top of virtual memory? Something is using that | |
| * memory space but not sure what right now... If you find it, leave | |
| * a comment here. | |
| */ | |
| #define FIXADDR_TOP ((unsigned long) (-2*PAGE_SIZE)) | |
| #include <linux/kernel.h> | |
| #include <linux/bug.h> | |
| #include <asm/page.h> | |
| enum fixed_addresses { | |
| FIX_EARLYCON_MEM_BASE, | |
| FIX_TEXT_POKE0, | |
| __end_of_fixed_addresses | |
| }; | |
| #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) | |
| /* FIXADDR_BOTTOM might be a better name here... */ | |
| #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) | |
| #define FIXMAP_PAGE_IO PAGE_KERNEL_NOCACHE | |
| extern void __set_fixmap(enum fixed_addresses idx, | |
| phys_addr_t phys, pgprot_t flags); | |
| #include <asm-generic/fixmap.h> | |
| #endif |