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