diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.h | 75 |
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 |