| /* |
| * 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 */ |
