//==========================================================================////      flash_query.c////      Flash programming - query device////==========================================================================//####ECOSGPLCOPYRIGHTBEGIN####// -------------------------------------------// This file is part of eCos, the Embedded Configurable Operating System.// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.//// 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, hmt// Contributors: gthomas// Date:         2001-02-14// Purpose:      // Description:  //              //####DESCRIPTIONEND####////==========================================================================#include "strata.h"#include <pkgconf/hal.h>#include <cyg/hal/hal_arch.h>#include <cyg/hal/hal_cache.h>#include CYGHWR_MEMORY_LAYOUT_H//// CAUTION!  This code must be copied to RAM before execution.  Therefore,// it must not contain any code which might be position dependent!//#define CNT 20*1000*10  // Approx 20msintflash_query(unsigned char *data){    volatile flash_t *ROM;    int i, cnt;    int cache_on;    HAL_DCACHE_IS_ENABLED(cache_on);    if (cache_on) {        HAL_DCACHE_SYNC();        HAL_DCACHE_DISABLE();    }    // Get base address and map addresses to virtual addresses    ROM = FLASH_P2V( CYGNUM_FLASH_BASE );#ifdef CYGOPT_FLASH_IS_BOOTBLOCK    // BootBlock flash does not support full Read_Query - we have do a    // table oriented thing above, after getting just two bytes of results:    ROM[0] = FLASH_Read_ID;    i = 2;#else    // StrataFlash supports the full Read_Query op:    ROM[0] = FLASH_Read_Query;    i = sizeof(struct FLASH_query);#endif // Not CYGOPT_FLASH_IS_BOOTBLOCK    for (cnt = CNT;  cnt > 0;  cnt--) ;#if defined(CYGHWR_FLASH_ADDRESS_SWAB)    for ( /* i */;  i > 0;  i-=2 ) {        // It is very deliberate that data is chars NOT flash_t:        // The info comes out in bytes regardless of device.        *data++ = (unsigned char) ROM[1];        *data++ = (unsigned char) ROM[0];	ROM += 2;    }#else    for ( /* i */;  i > 0;  i-- ) {        // It is very deliberate that data is chars NOT flash_t:        // The info comes out in bytes regardless of device.        *data++ = (unsigned char) (*ROM++);#ifndef CYGOPT_FLASH_IS_BOOTBLOCK# if  8 == CYGNUM_FLASH_WIDTH	// strata flash with 'byte-enable' contains the configuration data	// at even addresses	++ROM;# endif#endif    }#endif    ROM[0] = FLASH_Reset;    if (cache_on) {        HAL_DCACHE_ENABLE();    }    return 0;}