1 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/plat-mxs/include/mach/memory.h b/arch/arm/plat-mxs/include/mach/memory.h
new file mode 100644
index 000000000000..051b1608cca4
--- /dev/null
+++ b/arch/arm/plat-mxs/include/mach/memory.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/page.h>
+#include <asm/sizes.h>
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET	UL(0x40000000)
+
+#ifndef __ASSEMBLY__
+
+#ifdef CONFIG_DMA_ZONE_SIZE
+#define MXS_DMA_ZONE_SIZE	((CONFIG_DMA_ZONE_SIZE * SZ_1M) >> PAGE_SHIFT)
+#else
+#define MXS_DMA_ZONE_SIZE	((12 * SZ_1M) >> PAGE_SHIFT)
+#endif
+
+static inline void __arch_adjust_zones(int node, unsigned long *zone_size,
+				       unsigned long *zhole_size)
+{
+	if (node != 0)
+		return;
+	/* Create separate zone to reserve memory for DMA */
+	zone_size[1] = zone_size[0] - MXS_DMA_ZONE_SIZE;
+	zone_size[0] = MXS_DMA_ZONE_SIZE;
+	zhole_size[1] = zhole_size[0];
+	zhole_size[0] = 0;
+}
+
+#define arch_adjust_zones(node, size, holes) \
+	__arch_adjust_zones(node, size, holes)
+
+#endif
+
+#define ISA_DMA_THRESHOLD	(0x0003ffffULL)
+
+#define CONSISTENT_DMA_SIZE	SZ_32M
+
+#endif