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@@ -0,0 +1,251 @@
+//==========================================================================
+//
+//      flash.h
+//
+//      Flash programming - external interfaces
+//
+//==========================================================================
+//####ECOSGPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
+// Copyright (C) 2003 Gary Thomas
+// copyright (C) 2004 Andrew Lunn
+//
+// eCos 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 or (at your option) any later version.
+//
+// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
+// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or inline functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. However the source code for this file must still be made available
+// in accordance with section (3) of the GNU General Public License.
+//
+// This exception does not invalidate any other reasons why a work based on
+// this file might be covered by the GNU General Public License.
+//
+// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
+// at http://sources.redhat.com/ecos/ecos-license/
+// -------------------------------------------
+//####ECOSGPLCOPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):    gthomas
+// Contributors: gthomas, Andrew Lunn
+// Date:         2000-07-14
+// Purpose:      
+// Description:  
+//              
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+#ifndef _IO_FLASH_PRIV_H_
+#define _IO_FLASH_PRIV_H_
+
+// Forward reference of the device structure
+struct cyg_flash_dev;
+
+// Structure of pointers to functions in the device driver
+struct cyg_flash_dev_funs {
+  int (*flash_init) (struct cyg_flash_dev *dev);
+  size_t (*flash_query) (struct cyg_flash_dev *dev, void * data, 
+                         const size_t len);
+  int (*flash_erase_block) (struct cyg_flash_dev *dev, 
+                            const cyg_flashaddr_t block_base);
+  int (*flash_program) (struct cyg_flash_dev *dev, 
+                        cyg_flashaddr_t base, 
+                        const void* data, const size_t len);
+  int (*flash_read) (struct cyg_flash_dev *dev, 
+                     const cyg_flashaddr_t base, 
+                     void* data, const size_t len);
+  int (*flash_hwr_map_error) (struct cyg_flash_dev *dev, int err);
+  int (*flash_block_lock) (struct cyg_flash_dev *dev, 
+                           const cyg_flashaddr_t block_base);
+  int (*flash_block_unlock) (struct cyg_flash_dev *dev, 
+                             const cyg_flashaddr_t block_base);
+};
+
+// Structure each device places in the HAL table
+struct cyg_flash_dev {
+  struct cyg_flash_dev_funs   *funs;           // Function pointers
+  cyg_flashaddr_t             start;           // First address
+  cyg_flashaddr_t             end;             // Last address
+  cyg_uint32                  num_block_infos; // Number of entries
+  cyg_block_info_t            *block_info;     // Info about one block size
+
+  void                        *priv;           // Devices private data
+  void                        *config;         // Configuration info
+
+// The following are only written to by the FLASH IO layer.
+  cyg_flash_printf            *pf;             // Pointer to diagnostic printf
+  bool                        init;            // Device has been initialised
+#ifdef CYGPKG_KERNEL
+  cyg_mutex_t                 mutex;           // Mutex for thread safeness
+#endif
+  struct cyg_flash_dev        *next;           // Pointer to next device
+} CYG_HAL_TABLE_TYPE;
+
+#define CYG_FLASH_FUNS(funs,init,query,erase,prog,read,map,lock,unlock)\
+struct cyg_flash_dev_funs funs = \
+  {                                     \
+    init,                               \
+    query,                              \
+    erase,                              \
+    prog,                               \
+    read,                               \
+    map,                                \
+    lock,                               \
+    unlock                              \
+  };
+
+// We assume HAL tables are placed into RAM.
+#define CYG_FLASH_DRIVER(name, _funs, _config, _start, _priv_size)    \
+static char priv_ ## name [_priv_size];                               \
+struct cyg_flash_dev name CYG_HAL_TABLE_ENTRY(cyg_flashdev) = {       \
+   .funs = _funs,                                                     \
+   .config = _config,                                                 \
+   .priv = priv_ ## name,                                             \
+   .start = _start,                                                   \
+};
+
+#ifdef CYGSEM_IO_FLASH_LEGACY_DEVICE_API
+struct flash_info {
+  int   block_size;   // Assuming fixed size "blocks"
+  int   blocks;       // Number of blocks
+  int   buffer_size;  // Size of write buffer (only defined for some devices)
+  unsigned long block_mask;
+  void *start, *end;  // Address range
+  int   init;
+  cyg_flash_printf *pf;
+};
+
+externC struct flash_info flash_info;
+externC int  flash_hwr_init(void);
+externC int  flash_hwr_map_error(int err);
+externC void flash_dev_query(void *data);
+#endif // CYGSEM_IO_FLASH_LEGACY_DEVICE_API
+// 
+// Some FLASH devices may require additional support, e.g. to turn on
+// appropriate voltage drivers, before any operation.
+//
+#ifdef  CYGIMP_FLASH_ENABLE
+#define FLASH_Enable CYGIMP_FLASH_ENABLE
+extern void CYGIMP_FLASH_ENABLE(void *, void *);
+#else
+#define FLASH_Enable(_start_, _end_)
+#endif
+#ifdef  CYGIMP_FLASH_DISABLE
+#define FLASH_Disable CYGIMP_FLASH_DISABLE
+extern void CYGIMP_FLASH_DISABLE(void *, void *);
+#else
+#define FLASH_Disable(_start_, _end_)
+#endif
+
+//
+// Some platforms have a DIP switch or jumper that tells the software that
+// the flash is write protected.
+//
+#ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
+externC cyg_bool plf_flash_query_soft_wp(void *addr, int len);
+#endif
+
+//---------------------------------------------------------------------------
+// Execution of flash code must be done inside a
+// HAL_FLASH_CACHES_OFF/HAL_FLASH_CACHES_ON region - disabling the
+// cache on unified cache systems is necessary to prevent burst access
+// to the flash area being programmed. With Harvard style caches, only
+// the data cache needs to be disabled, but the instruction cache is
+// disabled for consistency.
+
+// Targets may provide alternative implementations for these macros in
+// the hal_cache.h (or var/plf) files.
+
+// The first part below is a generic, optimal implementation.  The
+// second part is the old implementation that has been tested to work
+// on some targets - but it is not be suitable for targets that would
+// do burst access to the flash (it does not disable the data cache).
+
+// Both implementations must be called with interrupts disabled.
+
+// NOTE: Do _not_ change any of the below macros without checking that
+//       the changed code still works on _all_ platforms that rely on these
+//       macros. There is no such thing as logical and correct when dealing
+//       with different cache and IO models, so _do not_ mess with this code
+//       unless you test it properly afterwards.
+
+#ifndef HAL_FLASH_CACHES_OFF
+
+// Some drivers have only been tested with the old macros below.
+#ifndef HAL_FLASH_CACHES_OLD_MACROS
+
+#ifdef HAL_CACHE_UNIFIED
+
+// Note: the ucache code has not been tested yet on any target.
+#define HAL_FLASH_CACHES_OFF(_d_, _i_)          \
+    CYG_MACRO_START                             \
+    _i_ = 0; /* avoids warning */               \
+    HAL_UCACHE_IS_ENABLED(_d_);                 \
+    HAL_UCACHE_SYNC();                          \
+    HAL_UCACHE_INVALIDATE_ALL();                \
+    HAL_UCACHE_DISABLE();                       \
+    CYG_MACRO_END
+
+#define HAL_FLASH_CACHES_ON(_d_, _i_)           \
+    CYG_MACRO_START                             \
+    if (_d_) HAL_UCACHE_ENABLE();               \
+    CYG_MACRO_END
+
+#else  // HAL_CACHE_UNIFIED
+
+#define HAL_FLASH_CACHES_OFF(_d_, _i_)          \
+    CYG_MACRO_START                             \
+    _i_ = 0; /* avoids warning */               \
+    HAL_DCACHE_IS_ENABLED(_d_);                 \
+    HAL_DCACHE_SYNC();                          \
+    HAL_DCACHE_INVALIDATE_ALL();                \
+    HAL_DCACHE_DISABLE();                       \
+    HAL_ICACHE_INVALIDATE_ALL();                \
+    CYG_MACRO_END
+
+#define HAL_FLASH_CACHES_ON(_d_, _i_)           \
+    CYG_MACRO_START                             \
+    if (_d_) HAL_DCACHE_ENABLE();               \
+    CYG_MACRO_END
+
+#endif // HAL_CACHE_UNIFIED
+
+#else  // HAL_FLASH_CACHES_OLD_MACROS
+
+// Note: This implementation is broken as it will always enable the i-cache
+//       even if it was not enabled before. It also doesn't work if the
+//       target uses burst access to flash since the d-cache is left enabled.
+//       However, this does not mean you can change this code! Leave it as
+//       is - if you want a different implementation, provide it in the
+//       arch/var/platform cache header file.
+
+#define HAL_FLASH_CACHES_OFF(_d_, _i_)          \
+    _d_ = 0; /* avoids warning */               \
+    _i_ = 0; /* avoids warning */               \
+    HAL_DCACHE_SYNC();                          \
+    HAL_ICACHE_DISABLE();
+
+#define HAL_FLASH_CACHES_ON(_d_, _i_)           \
+    HAL_ICACHE_ENABLE();
+
+#endif  // HAL_FLASH_CACHES_OLD_MACROS
+
+#endif  // HAL_FLASH_CACHES_OFF
+
+#endif  // _IO_FLASH_PRIV_H_