1 files changed, 64 insertions, 0 deletions

diff --git a/include/asm-arm/arch-davinci/memory.h b/include/asm-arm/arch-davinci/memory.h
new file mode 100644
index 000000000000..dd1625c23cf4
--- /dev/null
+++ b/include/asm-arm/arch-davinci/memory.h
@@ -0,0 +1,64 @@
+/*
+ * DaVinci memory space definitions
+ *
+ * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
+ *
+ * 2007 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+/**************************************************************************
+ * Included Files
+ **************************************************************************/
+#include <asm/page.h>
+#include <asm/sizes.h>
+
+/**************************************************************************
+ * Definitions
+ **************************************************************************/
+#define DAVINCI_DDR_BASE    0x80000000
+#define DAVINCI_IRAM_BASE   0x00008000 /* ARM Internal RAM */
+
+#define PHYS_OFFSET DAVINCI_DDR_BASE
+
+/*
+ * Increase size of DMA-consistent memory region
+ */
+#define CONSISTENT_DMA_SIZE (14<<20)
+
+#ifndef __ASSEMBLY__
+/*
+ * Restrict DMA-able region to workaround silicon bug.  The bug
+ * restricts buffers available for DMA to video hardware to be
+ * below 128M
+ */
+static inline void
+__arch_adjust_zones(int node, unsigned long *size, unsigned long *holes)
+{
+        unsigned int sz = (128<<20) >> PAGE_SHIFT;
+
+        if (node != 0)
+                sz = 0;
+
+        size[1] = size[0] - sz;
+        size[0] = sz;
+}
+
+#define arch_adjust_zones(node, zone_size, holes) \
+        if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(node, zone_size, holes)
+
+#define ISA_DMA_THRESHOLD       (PHYS_OFFSET + (128<<20) - 1)
+
+#endif
+
+/*
+ * Bus address is physical address
+ */
+#define __virt_to_bus(x)        __virt_to_phys(x)
+#define __bus_to_virt(x)        __phys_to_virt(x)
+
+#endif /* __ASM_ARCH_MEMORY_H */