Add at91sam7 flash driver.

[bertos.git] / bertos / cpu / arm / drv / flash_at91.h

diff --git a/bertos/cpu/arm/drv/flash_at91.h b/bertos/cpu/arm/drv/flash_at91.h
new file mode 100644 (file)
index 0000000..1dcd982
--- /dev/null
+++ b/bertos/cpu/arm/drv/flash_at91.h
@@ -0,0 +1,102 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ *
+ * \brief At91sam7 Internal flash read/write driver.
+ *
+ *
+ */
+
+#ifndef FLASH_AT91_H
+#define FLASH_AT91_H
+
+#include <cpu/types.h>
+
+#include <kern/kfile.h>
+
+#include <io/arm.h>
+
+
+/**
+ * Define data type to manage page and memory address.
+ */
+typedef uint32_t arm_page_t;
+typedef uint32_t arm_page_addr_t;
+
+/**
+ * FlashAt91 KFile context structure.
+ */
+typedef struct FlashAt91
+{
+       /**
+        * File descriptor.
+        */
+       KFile fd;
+
+       /**
+        * Flag for checking if current page is modified.
+        */
+       bool page_dirty;
+
+       /**
+        * Current buffered page.
+        */
+       arm_page_t curr_page;
+
+       /**
+        * Temporary buffer cointaing data block to
+        * write on flash.
+        */
+       uint8_t page_buf[FLASH_PAGE_SIZE_BYTES];
+
+
+} FlashAt91;
+
+/**
+ * ID for FlashAt91
+ */
+#define KFT_FLASHAT91 MAKE_ID('F', 'A', '9', '1')
+
+/**
+ * Convert + ASSERT from generic KFile to FlashAt91.
+ */
+INLINE FlashAt91 * FLASHAT91_CAST(KFile *fd)
+{
+       ASSERT(fd->_type == KFT_FLASHAT91);
+       return (FlashAt91 *)fd;
+}
+
+
+void flash_at91_init(FlashAt91 *fd);
+
+#endif