You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
30 lines
881 B
30 lines
881 B
#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
|
|
|