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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-clps711x/edb7211-mm.c
downloadconfigs-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mach-clps711x/edb7211-mm.c')
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1 files changed, 70 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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+++ b/arch/arm/mach-clps711x/edb7211-mm.c
@@ -0,0 +1,70 @@
+/*
+ * 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 <asm/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 = {
+ /* virtual, physical, length, type */
+
+ /* memory-mapped extra keyboard row and CS8900A Ethernet chip */
+ { EP7211_VIRT_EXTKBD, EP7211_PHYS_EXTKBD, SZ_1M, MT_DEVICE },
+ { EP7211_VIRT_CS8900A, EP7211_PHYS_CS8900A, SZ_1M, MT_DEVICE },
+
+ /* flash banks */
+ { EP7211_VIRT_FLASH1, EP7211_PHYS_FLASH1, SZ_8M, MT_DEVICE },
+ { EP7211_VIRT_FLASH2, EP7211_PHYS_FLASH2, SZ_8M, MT_DEVICE }
+};
+
+void __init edb7211_map_io(void)
+{
+ clps711x_map_io();
+ iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));
+}
+