blob: ffafc99c3472456ec9c40e19690d1b8cfea2000c (
plain) (
tree)
|
|
#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
|
