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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-cris/arch-v10/page.h | |
download | blackbird-op-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz blackbird-op-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
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 'include/asm-cris/arch-v10/page.h')
-rw-r--r-- | include/asm-cris/arch-v10/page.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/asm-cris/arch-v10/page.h b/include/asm-cris/arch-v10/page.h new file mode 100644 index 000000000000..407e6e68f49e --- /dev/null +++ b/include/asm-cris/arch-v10/page.h @@ -0,0 +1,31 @@ +#ifndef _CRIS_ARCH_PAGE_H +#define _CRIS_ARCH_PAGE_H + +#include <linux/config.h> + +#ifdef __KERNEL__ + +/* This handles the memory map.. */ +#ifdef CONFIG_CRIS_LOW_MAP +#define PAGE_OFFSET KSEG_6 /* kseg_6 is mapped to physical ram */ +#else +#define PAGE_OFFSET KSEG_C /* kseg_c is mapped to physical ram */ +#endif + +/* macros to convert between really physical and virtual addresses + * by stripping a selected bit, we can convert between KSEG_x and 0x40000000 where + * the DRAM really resides + */ + +#ifdef CONFIG_CRIS_LOW_MAP +/* we have DRAM virtually at 0x6 */ +#define __pa(x) ((unsigned long)(x) & 0xdfffffff) +#define __va(x) ((void *)((unsigned long)(x) | 0x20000000)) +#else +/* we have DRAM virtually at 0xc */ +#define __pa(x) ((unsigned long)(x) & 0x7fffffff) +#define __va(x) ((void *)((unsigned long)(x) | 0x80000000)) +#endif + +#endif +#endif |