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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/mach-clps711x/edb7211-mm.c
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/*

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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/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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