1da177e4c3
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!
31 lines
907 B
C
31 lines
907 B
C
#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
|