--- /dev/null
+/*
+ * Copyright © 2010 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+/* Defines for the Atmel AT45DB161D 16Mbit SPI Bus DataFlash® */
+
+#ifndef _AT45DB161D_H_
+#define _AT45DB161D_H_
+
+/*
+ * We reserve the last block on the device for
+ * configuration space. Writes and reads in this
+ * area return errors.
+ */
+
+#define FLASH_BLOCK_SIZE_MAX 512
+#define FLASH_BLOCK_SHIFT (ao_flash_block_shift)
+#define FLASH_BLOCK_SIZE (1 << FLASH_BLOCK_SHIFT)
+#define FLASH_BLOCK_MASK (FLASH_BLOCK_SIZE - 1)
+#define FLASH_DEVICE_SIZE (ao_flash_device_size)
+#define FLASH_DATA_SIZE (FLASH_DEVICE_SIZE - (uint32_t) FLASH_BLOCK_SIZE)
+#define FLASH_CONFIG_BLOCK ((uint16_t) (FLASH_DATA_SIZE / FLASH_BLOCK_SIZE))
+
+#define FLASH_READ 0x03
+#define FLASH_WRITE 0x82
+#define FLASH_READ_STATUS 0xd7
+#define FLASH_SET_CONFIG 0x3d
+
+#define FLASH_SET_512_BYTE_0 0x2a
+#define FLASH_SET_512_BYTE_1 0x80
+#define FLASH_SET_512_BYTE_2 0xa6
+
+#define FLASH_STATUS_RDY (1 << 7)
+#define FLASH_STATUS_COMP (1 << 6)
+#define FLASH_STATUS_PROTECT (1 << 1)
+#define FLASH_STATUS_PAGESIZE_512 (1 << 0)
+
+#endif /* _AT45DB161D_H_ */