[dev] flash: add flash ops definitions.
diff --git a/include/dev/flash.h b/include/dev/flash.h
new file mode 100644
index 0000000..2590d3c
--- /dev/null
+++ b/include/dev/flash.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2008, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+#ifndef __DEV_FLASH_H
+#define __DEV_FLASH_H
+
+#include <lib/ptable.h>
+
+void flash_init(struct ptable *ptable);
+struct ptable *flash_get_ptable(void);
+
+/* flash operations */
+int flash_erase(struct ptentry *ptn);
+int flash_read_ext(struct ptentry *ptn, unsigned extra_per_page,
+ unsigned offset, void *data, unsigned bytes);
+int flash_write(struct ptentry *ptn, unsigned extra_per_page, const void *data,
+ unsigned bytes);
+
+static inline int flash_read(struct ptentry *ptn, unsigned offset, void *data,
+ unsigned bytes)
+{
+ return flash_read_ext(ptn, 0, offset, data, bytes);
+}
+
+
+#endif /* __DEV_FLASH_H */