2 * linux/arch/arm/mach-clps711x/mm.c
4 * Extra MM routines for the EDB7211 board
6 * Copyright (C) 2000, 2001 Blue Mug, Inc. All Rights Reserved.
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.
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.
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
22 #include <linux/kernel.h>
23 #include <linux/init.h>
25 #include <asm/hardware.h>
27 #include <asm/pgtable.h>
28 #include <asm/sizes.h>
30 #include <asm/mach/map.h>
32 extern void clps711x_map_io(void);
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).
40 * Here is a physical memory map (to be fleshed out later):
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)
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
53 static struct map_desc edb7211_io_desc[] __initdata = {
54 { /* memory-mapped extra keyboard row */
55 .virtual = EP7211_VIRT_EXTKBD,
56 .pfn = __phys_to_pfn(EP7211_PHYS_EXTKBD),
59 }, { /* and CS8900A Ethernet chip */
60 .virtual = EP7211_VIRT_CS8900A,
61 .pfn = __phys_to_pfn(EP7211_PHYS_CS8900A),
64 }, { /* flash banks */
65 .virtual = EP7211_VIRT_FLASH1,
66 .pfn = __phys_to_pfn(EP7211_PHYS_FLASH1),
70 .virtual = EP7211_VIRT_FLASH2,
71 .pfn = __phys_to_pfn(EP7211_PHYS_FLASH2),
77 void __init edb7211_map_io(void)
80 iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));