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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [arm/] [mach-clps711x/] [edb7211-mm.c] - Rev 1275
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/* * linux/arch/arm/mach-clps711x/mm.c * * Extra MM routines for the EDB7211 board * * Copyright (C) 2000, 2001 Blue Mug, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/sched.h> #include <linux/mm.h> #include <linux/init.h> #include <asm/hardware.h> #include <asm/pgtable.h> #include <asm/page.h> #include <asm/mach/map.h> #define MB1 1048576 /* one megabyte == size of an MMU section */ extern void clps711x_map_io(void); /* * The on-chip registers are given a size of 1MB so that a section can * be used to map them; this saves a page table. This is the place to * add mappings for ROM, expansion memory, PCMCIA, etc. (if static * mappings are chosen for those areas). * * Here is a physical memory map (to be fleshed out later): * * Physical Address Size Description * ----------------- ----- --------------------------------- * c0000000-c001ffff 128KB reserved for video RAM [1] * c0020000-c0023fff 16KB parameters (see Documentation/arm/Setup) * c0024000-c0027fff 16KB swapper_pg_dir (task 0 page directory) * c0028000-... kernel image (TEXTADDR) * * [1] Unused pages should be given back to the VM; they are not yet. * The parameter block should also be released (not sure if this * happens). */ static struct map_desc edb7211_io_desc[] __initdata = { /* virtual, physical, length, domain, r, w, c, b */ /* memory-mapped extra keyboard row and CS8900A Ethernet chip */ { EP7211_VIRT_EXTKBD, EP7211_PHYS_EXTKBD, MB1, DOMAIN_IO, 1, 1, 0, 0 }, { EP7211_VIRT_CS8900A, EP7211_PHYS_CS8900A, MB1, DOMAIN_IO, 1, 1, 0, 0 }, /* flash banks */ { EP7211_VIRT_FLASH1, EP7211_PHYS_FLASH1, MB1 * 8, DOMAIN_KERNEL, 1, 1, 0, 0 }, { EP7211_VIRT_FLASH2, EP7211_PHYS_FLASH2, MB1 * 8, DOMAIN_KERNEL, 1, 1, 0, 0 }, LAST_DESC }; void __init edb7211_map_io(void) { clps711x_map_io(); iotable_init(edb7211_io_desc); }
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