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-rw-r--r--arch/cris/include/arch-v32/arch/page.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/cris/include/arch-v32/arch/page.h b/arch/cris/include/arch-v32/arch/page.h
new file mode 100644
index 000000000000..20f1b4806bfe
--- /dev/null
+++ b/arch/cris/include/arch-v32/arch/page.h
@@ -0,0 +1,27 @@
+#ifndef _ASM_CRIS_ARCH_PAGE_H
+#define _ASM_CRIS_ARCH_PAGE_H
+
+
+#ifdef __KERNEL__
+
+#define PAGE_OFFSET KSEG_C /* kseg_c is mapped to physical ram. */
+
+/*
+ * Macros to convert between physical and virtual addresses. By stripping a
+ * selected bit it's possible to convert between KSEG_x and 0x40000000 where the
+ * DRAM really resides. DRAM is virtually at 0xc.
+ */
+#ifndef CONFIG_ETRAX_VCS_SIM
+#define __pa(x) ((unsigned long)(x) & 0x7fffffff)
+#define __va(x) ((void *)((unsigned long)(x) | 0x80000000))
+#else
+#define __pa(x) ((unsigned long)(x) & 0x3fffffff)
+#define __va(x) ((void *)((unsigned long)(x) | 0xc0000000))
+#endif
+
+#define VM_STACK_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
+ VM_MAYREAD | VM_MAYWRITE)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_CRIS_ARCH_PAGE_H */