projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| a09e64fb | 25 | #include <mach/hardware.h> |
| 1da177e4 | 26 | #include <asm/page.h> |
| 1da177e4 LT |
27 | #include <asm/sizes.h> |
| 28 | ||
| 29 | #include <asm/mach/map.h> | |
| 30 | ||
| 31 | extern 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 | */ | |
| 52 | static struct map_desc edb7211_io_desc[] __initdata = { | |
| f10083f5 DS |
53 | { /* memory-mapped extra keyboard row */ |
| 54 | .virtual = EP7211_VIRT_EXTKBD, | |
| 55 | .pfn = __phys_to_pfn(EP7211_PHYS_EXTKBD), | |
| 56 | .length = SZ_1M, | |
| ca82d85b | 57 | .type = MT_DEVICE, |
| f10083f5 DS |
58 | }, { /* and CS8900A Ethernet chip */ |
| 59 | .virtual = EP7211_VIRT_CS8900A, | |
| 60 | .pfn = __phys_to_pfn(EP7211_PHYS_CS8900A), | |
| 61 | .length = SZ_1M, | |
| ca82d85b | 62 | .type = MT_DEVICE, |
| f10083f5 DS |
63 | }, { /* flash banks */ |
| 64 | .virtual = EP7211_VIRT_FLASH1, | |
| 65 | .pfn = __phys_to_pfn(EP7211_PHYS_FLASH1), | |
| 66 | .length = SZ_8M, | |
| ca82d85b | 67 | .type = MT_DEVICE, |
| f10083f5 DS |
68 | }, { |
| 69 | .virtual = EP7211_VIRT_FLASH2, | |
| 70 | .pfn = __phys_to_pfn(EP7211_PHYS_FLASH2), | |
| 71 | .length = SZ_8M, | |
| ca82d85b | 72 | .type = MT_DEVICE, |
| f10083f5 | 73 | } |
| 1da177e4 LT |
74 | }; |
| 75 | ||
| 76 | void __init edb7211_map_io(void) | |
| 77 | { | |
| 78 | clps711x_map_io(); | |
| 79 | iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc)); | |
| 80 | } | |
| 81 |