blob: 4372f06c9929657ac423fc4b0c84e78f170e0566 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/arch/arm/mach-clps711x/mm.c
3 *
4 * Extra MM routines for the EDB7211 board
5 *
6 * Copyright (C) 2000, 2001 Blue Mug, Inc. All Rights Reserved.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22#include <linux/kernel.h>
23#include <linux/init.h>
Olof Johanssond3c7de52012-03-29 23:34:29 -070024#include <linux/bug.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
Russell Kinga09e64f2008-08-05 16:14:15 +010026#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <asm/page.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <asm/sizes.h>
29
30#include <asm/mach/map.h>
31
32extern void clps711x_map_io(void);
33
34/*
35 * The on-chip registers are given a size of 1MB so that a section can
36 * be used to map them; this saves a page table. This is the place to
37 * add mappings for ROM, expansion memory, PCMCIA, etc. (if static
38 * mappings are chosen for those areas).
39 *
40 * Here is a physical memory map (to be fleshed out later):
41 *
42 * Physical Address Size Description
43 * ----------------- ----- ---------------------------------
44 * c0000000-c001ffff 128KB reserved for video RAM [1]
45 * c0020000-c0023fff 16KB parameters (see Documentation/arm/Setup)
46 * c0024000-c0027fff 16KB swapper_pg_dir (task 0 page directory)
47 * c0028000-... kernel image (TEXTADDR)
48 *
49 * [1] Unused pages should be given back to the VM; they are not yet.
50 * The parameter block should also be released (not sure if this
51 * happens).
52 */
53static struct map_desc edb7211_io_desc[] __initdata = {
Deepak Saxenaf10083f2005-10-28 15:19:05 +010054 { /* memory-mapped extra keyboard row */
55 .virtual = EP7211_VIRT_EXTKBD,
56 .pfn = __phys_to_pfn(EP7211_PHYS_EXTKBD),
57 .length = SZ_1M,
Russell Kingca82d852005-11-03 10:06:35 +000058 .type = MT_DEVICE,
Deepak Saxenaf10083f2005-10-28 15:19:05 +010059 }, { /* and CS8900A Ethernet chip */
60 .virtual = EP7211_VIRT_CS8900A,
61 .pfn = __phys_to_pfn(EP7211_PHYS_CS8900A),
62 .length = SZ_1M,
Russell Kingca82d852005-11-03 10:06:35 +000063 .type = MT_DEVICE,
Deepak Saxenaf10083f2005-10-28 15:19:05 +010064 }, { /* flash banks */
65 .virtual = EP7211_VIRT_FLASH1,
66 .pfn = __phys_to_pfn(EP7211_PHYS_FLASH1),
67 .length = SZ_8M,
Russell Kingca82d852005-11-03 10:06:35 +000068 .type = MT_DEVICE,
Deepak Saxenaf10083f2005-10-28 15:19:05 +010069 }, {
70 .virtual = EP7211_VIRT_FLASH2,
71 .pfn = __phys_to_pfn(EP7211_PHYS_FLASH2),
72 .length = SZ_8M,
Russell Kingca82d852005-11-03 10:06:35 +000073 .type = MT_DEVICE,
Deepak Saxenaf10083f2005-10-28 15:19:05 +010074 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070075};
76
77void __init edb7211_map_io(void)
78{
79 clps711x_map_io();
80 iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));
81}
82