| #ifndef _CRIS_ARCH_PAGE_H | |
| #define _CRIS_ARCH_PAGE_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 |