Root/arch/arm/mach-clps711x/edb7211-mm.c

1/*
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>
24
25#include <mach/hardware.h>
26#include <asm/page.h>
27#include <asm/sizes.h>
28 
29#include <asm/mach/map.h>
30
31extern void clps711x_map_io(void);
32
33/*
34 * The on-chip registers are given a size of 1MB so that a section can
35 * be used to map them; this saves a page table. This is the place to
36 * add mappings for ROM, expansion memory, PCMCIA, etc. (if static
37 * mappings are chosen for those areas).
38 *
39 * Here is a physical memory map (to be fleshed out later):
40 *
41 * Physical Address Size Description
42 * ----------------- ----- ---------------------------------
43 * c0000000-c001ffff 128KB reserved for video RAM [1]
44 * c0020000-c0023fff 16KB parameters (see Documentation/arm/Setup)
45 * c0024000-c0027fff 16KB swapper_pg_dir (task 0 page directory)
46 * c0028000-... kernel image (TEXTADDR)
47 *
48 * [1] Unused pages should be given back to the VM; they are not yet.
49 * The parameter block should also be released (not sure if this
50 * happens).
51 */
52static struct map_desc edb7211_io_desc[] __initdata = {
53     { /* memory-mapped extra keyboard row */
54         .virtual = EP7211_VIRT_EXTKBD,
55        .pfn = __phys_to_pfn(EP7211_PHYS_EXTKBD),
56        .length = SZ_1M,
57        .type = MT_DEVICE,
58    }, { /* and CS8900A Ethernet chip */
59        .virtual = EP7211_VIRT_CS8900A,
60        .pfn = __phys_to_pfn(EP7211_PHYS_CS8900A),
61        .length = SZ_1M,
62        .type = MT_DEVICE,
63    }, { /* flash banks */
64        .virtual = EP7211_VIRT_FLASH1,
65        .pfn = __phys_to_pfn(EP7211_PHYS_FLASH1),
66        .length = SZ_8M,
67        .type = MT_DEVICE,
68    }, {
69        .virtual = EP7211_VIRT_FLASH2,
70        .pfn = __phys_to_pfn(EP7211_PHYS_FLASH2),
71        .length = SZ_8M,
72        .type = MT_DEVICE,
73    }
74};
75
76void __init edb7211_map_io(void)
77{
78        clps711x_map_io();
79        iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));
80}
81
82

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