83 строки
2.6 KiB
C
83 строки
2.6 KiB
C
/*
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* linux/arch/arm/mach-clps711x/mm.c
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*
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* Extra MM routines for the EDB7211 board
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*
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* Copyright (C) 2000, 2001 Blue Mug, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <mach/hardware.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/sizes.h>
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#include <asm/mach/map.h>
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extern void clps711x_map_io(void);
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/*
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* The on-chip registers are given a size of 1MB so that a section can
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* be used to map them; this saves a page table. This is the place to
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* add mappings for ROM, expansion memory, PCMCIA, etc. (if static
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* mappings are chosen for those areas).
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*
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* Here is a physical memory map (to be fleshed out later):
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*
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* Physical Address Size Description
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* ----------------- ----- ---------------------------------
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* c0000000-c001ffff 128KB reserved for video RAM [1]
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* c0020000-c0023fff 16KB parameters (see Documentation/arm/Setup)
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* c0024000-c0027fff 16KB swapper_pg_dir (task 0 page directory)
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* c0028000-... kernel image (TEXTADDR)
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*
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* [1] Unused pages should be given back to the VM; they are not yet.
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* The parameter block should also be released (not sure if this
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* happens).
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*/
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static struct map_desc edb7211_io_desc[] __initdata = {
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{ /* memory-mapped extra keyboard row */
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.virtual = EP7211_VIRT_EXTKBD,
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.pfn = __phys_to_pfn(EP7211_PHYS_EXTKBD),
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.length = SZ_1M,
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.type = MT_DEVICE,
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}, { /* and CS8900A Ethernet chip */
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.virtual = EP7211_VIRT_CS8900A,
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.pfn = __phys_to_pfn(EP7211_PHYS_CS8900A),
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.length = SZ_1M,
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.type = MT_DEVICE,
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}, { /* flash banks */
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.virtual = EP7211_VIRT_FLASH1,
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.pfn = __phys_to_pfn(EP7211_PHYS_FLASH1),
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.length = SZ_8M,
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.type = MT_DEVICE,
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}, {
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.virtual = EP7211_VIRT_FLASH2,
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.pfn = __phys_to_pfn(EP7211_PHYS_FLASH2),
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.length = SZ_8M,
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.type = MT_DEVICE,
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}
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};
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void __init edb7211_map_io(void)
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{
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clps711x_map_io();
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iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));
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}
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