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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 /include/asm-arm/arch-ebsa285/memory.h
Linux-2.6.12-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 'include/asm-arm/arch-ebsa285/memory.h')
-rw-r--r--include/asm-arm/arch-ebsa285/memory.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/include/asm-arm/arch-ebsa285/memory.h b/include/asm-arm/arch-ebsa285/memory.h
new file mode 100644
index 00000000000..d0466f9987d
--- /dev/null
+++ b/include/asm-arm/arch-ebsa285/memory.h
@@ -0,0 +1,75 @@
+/*
+ * linux/include/asm-arm/arch-ebsa285/memory.h
+ *
+ * Copyright (C) 1996-1999 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Changelog:
+ * 20-Oct-1996 RMK Created
+ * 31-Dec-1997 RMK Fixed definitions to reduce warnings.
+ * 17-May-1998 DAG Added __virt_to_bus and __bus_to_virt functions.
+ * 21-Nov-1998 RMK Changed __virt_to_bus and __bus_to_virt to macros.
+ * 21-Mar-1999 RMK Added PAGE_OFFSET for co285 architecture.
+ * Renamed to memory.h
+ * Moved PAGE_OFFSET and TASK_SIZE here
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <linux/config.h>
+
+#if defined(CONFIG_FOOTBRIDGE_ADDIN)
+/*
+ * If we may be using add-in footbridge mode, then we must
+ * use the out-of-line translation that makes use of the
+ * PCI BAR
+ */
+#ifndef __ASSEMBLY__
+extern unsigned long __virt_to_bus(unsigned long);
+extern unsigned long __bus_to_virt(unsigned long);
+#endif
+
+#elif defined(CONFIG_FOOTBRIDGE_HOST)
+
+#define __virt_to_bus(x) ((x) - 0xe0000000)
+#define __bus_to_virt(x) ((x) + 0xe0000000)
+
+#else
+
+#error "Undefined footbridge mode"
+
+#endif
+
+#if defined(CONFIG_ARCH_FOOTBRIDGE)
+
+/* Task size and page offset at 3GB */
+#define TASK_SIZE (0xbf000000UL)
+#define PAGE_OFFSET (0xc0000000UL)
+
+#elif defined(CONFIG_ARCH_CO285)
+
+/* Task size and page offset at 1.5GB */
+#define TASK_SIZE (0x5f000000UL)
+#define PAGE_OFFSET (0x60000000UL)
+
+#else
+
+#error "Undefined footbridge architecture"
+
+#endif
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET (0x00000000UL)
+
+/*
+ * This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE ((TASK_SIZE + 0x01000000) / 3)
+
+#endif