1 files changed, 31 insertions, 0 deletions
diff --git a/include/asm-cris/arch-v10/page.h b/include/asm-cris/arch-v10/page.h
new file mode 100644
index 00000000000..407e6e68f49
--- /dev/null
+++ b/include/asm-cris/arch-v10/page.h
@@ -0,0 +1,31 @@
+#ifndef _CRIS_ARCH_PAGE_H
+#define _CRIS_ARCH_PAGE_H
+
+#include <linux/config.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