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-rw-r--r--arch/arm/mach-clps711x/edb7211-mm.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm/mach-clps711x/edb7211-mm.c b/arch/arm/mach-clps711x/edb7211-mm.c
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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/kernel.h>
+#include <linux/init.h>
+
+#include <mach/hardware.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/sizes.h>
+
+#include <asm/mach/map.h>
+
+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 = {
+ { /* memory-mapped extra keyboard row */
+ .virtual = EP7211_VIRT_EXTKBD,
+ .pfn = __phys_to_pfn(EP7211_PHYS_EXTKBD),
+ .length = SZ_1M,
+ .type = MT_DEVICE,
+ }, { /* and CS8900A Ethernet chip */
+ .virtual = EP7211_VIRT_CS8900A,
+ .pfn = __phys_to_pfn(EP7211_PHYS_CS8900A),
+ .length = SZ_1M,
+ .type = MT_DEVICE,
+ }, { /* flash banks */
+ .virtual = EP7211_VIRT_FLASH1,
+ .pfn = __phys_to_pfn(EP7211_PHYS_FLASH1),
+ .length = SZ_8M,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = EP7211_VIRT_FLASH2,
+ .pfn = __phys_to_pfn(EP7211_PHYS_FLASH2),
+ .length = SZ_8M,
+ .type = MT_DEVICE,
+ }
+};
+
+void __init edb7211_map_io(void)
+{
+ clps711x_map_io();
+ iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));
+}
+
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