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Diffstat (limited to 'memories/norflash/norflash.dir')
| -rw-r--r-- | memories/norflash/norflash.dir | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/memories/norflash/norflash.dir b/memories/norflash/norflash.dir new file mode 100644 index 0000000..efb54cd --- /dev/null +++ b/memories/norflash/norflash.dir @@ -0,0 +1,66 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * 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 disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \dir
+/// !!!Purpose
+///
+/// This directory provides a library of re-usable code to build %Norflash
+/// applications with Atmel AT91 microcontrollers.
+///
+/// !!!Contents
+/// The %norflash driver interface is implemented to support four layers of
+/// abstractions such CFI level, API level, low-level flash device driver and
+/// Hardware-specific bus operations. Users can focus on writing the high-level
+/// code required for their particular applications.
+///
+/// - CFI interface : Common Flash Memory Interface(CFI) allow in-system or
+/// programmer reading of flash device characteristics. It
+/// provides basic fuction NorFlash_CFI_Detect() to detect %flash
+/// chip by CFI, it also includes some general functions to get
+/// %flash device informations like memory size, byte and word
+/// configuration, block configurations and so on.
+/// - API layer: API layer consists of several functions that allow user to
+/// do operations with flash in a unified way. As a result,
+/// future device changes will not necessarily lead to the code
+/// changes in the application environments. In this %norflash
+/// library we support AMD and INTEL command set.
+/// - Low-level driver: It implement procedures to program basic operations
+/// described in the datasheets for flash devices. All low-level
+/// functions invkes the related supported program algorithm
+/// (AMD/Inter) which is auto detect by CFI before. The low-level
+/// code takes care of issuing the correct sequences of write/read
+/// operations for each command.
+/// - Hardware-specific bus operations: The low-level code requires hardware-
+/// specific read/write Bus operations to communicate with the
+/// %norflash devices. The implementation of these operations is
+/// hardware-platform dependent as it depends on the microprocessor
+/// on the location of the memory in the microprocessor's address
+/// space.
+//------------------------------------------------------------------------------
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