/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2014 Imagination Technologies Ltd. */ #ifndef _ASM_MALTA_SPACES_H #define _ASM_MALTA_SPACES_H #ifdef CONFIG_EVA /* * Traditional Malta Board Memory Map for EVA * * 0x00000000 - 0x0fffffff: 1st RAM region, 256MB * 0x10000000 - 0x1bffffff: GIC and CPC Control Registers * 0x1c000000 - 0x1fffffff: I/O And Flash * 0x20000000 - 0x7fffffff: 2nd RAM region, 1.5GB * 0x80000000 - 0xffffffff: Physical memory aliases to 0x0 (2GB) * * The kernel is still located in 0x80000000(kseg0). However, * the physical mask has been shifted to 0x80000000 which exploits the alias * on the Malta board. As a result of which, we override the __pa_symbol * to perform direct mapping from virtual to physical addresses. In other * words, the 0x80000000 virtual address maps to 0x80000000 physical address * which in turn aliases to 0x0. We do this in order to be able to use a flat * 2GB of memory (0x80000000 - 0xffffffff) so we can avoid the I/O hole in * 0x10000000 - 0x1fffffff. * The last 64KB of physical memory are reserved for correct HIGHMEM * macros arithmetic. * */ #define PAGE_OFFSET _AC(0x0, UL) #define PHYS_OFFSET _AC(0x80000000, UL) #define HIGHMEM_START _AC(0xffff0000, UL) #define __pa_symbol(x) (RELOC_HIDE((unsigned long)(x), 0)) #endif /* CONFIG_EVA */ #include <asm/mach-generic/spaces.h> #endif /* _ASM_MALTA_SPACES_H */