| /* SPDX-License-Identifier: GPL-2.0 */ |
| #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 |
