move remaining nand helper files

Move remaining NAND implementation files into src/flash/nand/.

src/flash/nand/arm_io.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2009 by David Brownell
+ *
+ * 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.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+#ifndef __ARM_NANDIO_H
+#define __ARM_NANDIO_H
+
+#include <flash/nand.h>
+#include <helper/binarybuffer.h>
+
+/**
+ * Available operational states the arm_nand_data struct can be in.
+ */
+enum arm_nand_op {
+	ARM_NAND_NONE, /**< No operation performed. */
+	ARM_NAND_READ, /**< Read operation performed. */
+	ARM_NAND_WRITE, /**< Write operation performed. */
+};
+
+/**
+ * The arm_nand_data struct is used for defining NAND I/O operations on an ARM
+ * core.
+ */
+struct arm_nand_data {
+	/** Target is proxy for some ARM core. */
+	struct target *target;
+
+	/** The copy area holds code loop and data for I/O operations. */
+	struct working_area	*copy_area;
+
+	/** The chunk size is the page size or ECC chunk. */
+	unsigned chunk_size;
+
+	/** Where data is read from or written to. */
+	uint32_t data;
+
+	/** Last operation executed using this struct. */
+	enum arm_nand_op op;
+
+	/* currently implicit:  data width == 8 bits (not 16) */
+};
+
+int arm_nandwrite(struct arm_nand_data *nand, uint8_t *data, int size);
+int arm_nandread(struct arm_nand_data *nand, uint8_t *data, uint32_t size);
+
+#endif /* __ARM_NANDIO_H */