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#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