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-rw-r--r--include/asm-arm/arch-shark/memory.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/asm-arm/arch-shark/memory.h b/include/asm-arm/arch-shark/memory.h
new file mode 100644
index 0000000..8ff956d
--- /dev/null
+++ b/include/asm-arm/arch-shark/memory.h
@@ -0,0 +1,42 @@
+/*
+ * linux/include/asm-arm/arch-shark/memory.h
+ *
+ * by Alexander Schulz
+ *
+ * derived from:
+ * linux/include/asm-arm/arch-ebsa110/memory.h
+ * Copyright (c) 1996-1999 Russell King.
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/sizes.h>
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET (0x08000000UL)
+
+#ifndef __ASSEMBLY__
+
+static inline void __arch_adjust_zones(int node, unsigned long *zone_size, unsigned long *zhole_size)
+{
+ if (node != 0) return;
+ /* Only the first 4 MB (=1024 Pages) are usable for DMA */
+ zone_size[1] = zone_size[0] - 1024;
+ zone_size[0] = 1024;
+ zhole_size[1] = zhole_size[0];
+ zhole_size[0] = 0;
+}
+
+#define arch_adjust_zones(node, size, holes) \
+ __arch_adjust_zones(node, size, holes)
+
+#define ISA_DMA_THRESHOLD (PHYS_OFFSET + SZ_4M - 1)
+
+#endif
+
+#define __virt_to_bus(x) __virt_to_phys(x)
+#define __bus_to_virt(x) __phys_to_virt(x)
+
+#endif
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