forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.5 KiB
46 lines
1.5 KiB
/* |
|
* 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 peform 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 arithmetics. |
|
* |
|
*/ |
|
|
|
#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 */
|
|
|