ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3
[deliverable/linux.git] / arch / arm / mach-u300 / include / mach / memory.h
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1/*
2 *
3 * arch/arm/mach-u300/include/mach/memory.h
4 *
5 *
6 * Copyright (C) 2007-2009 ST-Ericsson AB
7 * License terms: GNU General Public License (GPL) version 2
8 * Memory virtual/physical mapping constants.
9 * Author: Linus Walleij <linus.walleij@stericsson.com>
10 * Author: Jonas Aaberg <jonas.aberg@stericsson.com>
11 */
12
13#ifndef __MACH_MEMORY_H
14#define __MACH_MEMORY_H
15
16#ifdef CONFIG_MACH_U300_DUAL_RAM
17
18#define PHYS_OFFSET UL(0x48000000)
19#define BOOT_PARAMS_OFFSET (PHYS_OFFSET + 0x100)
20
21#else
22
23#ifdef CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
24#define PHYS_OFFSET (0x28000000 + \
25 (CONFIG_MACH_U300_ACCESS_MEM_SIZE - \
26 (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024)
27#else
28#define PHYS_OFFSET (0x28000000 + \
29 (CONFIG_MACH_U300_ACCESS_MEM_SIZE + \
30 (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024)
31#endif
32#define BOOT_PARAMS_OFFSET (0x28000000 + \
33 (CONFIG_MACH_U300_ACCESS_MEM_SIZE + \
34 (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024 + 0x100)
35#endif
36
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37/*
38 * TCM memory whereabouts
39 */
40#define ITCM_OFFSET 0xffff2000
41#define ITCM_END 0xffff3fff
42#define DTCM_OFFSET 0xffff4000
43#define DTCM_END 0xffff5fff
44
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45/*
46 * We enable a real big DMA buffer if need be.
47 */
48#define CONSISTENT_DMA_SIZE SZ_4M
49
50#endif
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