//==========================================================================
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//==========================================================================
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//
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//
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// flash_query.c
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// flash_query.c
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//
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//
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// Flash programming - query device
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// Flash programming - query device
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//
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//
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//==========================================================================
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//==========================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// for more details.
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//
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//
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// You should have received a copy of the GNU General Public License along
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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//
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// As a special exception, if other files instantiate templates or use macros
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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// in accordance with section (3) of the GNU General Public License.
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//
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//
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// This exception does not invalidate any other reasons why a work based on
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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// this file might be covered by the GNU General Public License.
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//
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//#####DESCRIPTIONBEGIN####
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//
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//
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// Author(s): gthomas, hmt
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// Author(s): gthomas, hmt
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// Contributors: gthomas
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// Contributors: gthomas
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// Date: 2001-02-14
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// Date: 2001-02-14
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// Purpose:
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// Purpose:
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// Description:
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// Description:
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//
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//
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//####DESCRIPTIONEND####
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//####DESCRIPTIONEND####
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//
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//
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//==========================================================================
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//==========================================================================
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#include "strata.h"
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#include "strata.h"
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#include <pkgconf/hal.h>
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#include <pkgconf/hal.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/hal/hal_cache.h>
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#include <cyg/hal/hal_cache.h>
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#include CYGHWR_MEMORY_LAYOUT_H
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#include CYGHWR_MEMORY_LAYOUT_H
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//
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//
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// CAUTION! This code must be copied to RAM before execution. Therefore,
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// CAUTION! This code must be copied to RAM before execution. Therefore,
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// it must not contain any code which might be position dependent!
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// it must not contain any code which might be position dependent!
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//
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//
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#define CNT 20*1000*10 // Approx 20ms
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#define CNT 20*1000*10 // Approx 20ms
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int
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int
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flash_query(unsigned char *data)
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flash_query(unsigned char *data)
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{
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{
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volatile flash_t *ROM;
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volatile flash_t *ROM;
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int i, cnt;
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int i, cnt;
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int cache_on;
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int cache_on;
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HAL_DCACHE_IS_ENABLED(cache_on);
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HAL_DCACHE_IS_ENABLED(cache_on);
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if (cache_on) {
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if (cache_on) {
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HAL_DCACHE_SYNC();
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HAL_DCACHE_SYNC();
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HAL_DCACHE_DISABLE();
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HAL_DCACHE_DISABLE();
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}
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}
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// Get base address and map addresses to virtual addresses
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// Get base address and map addresses to virtual addresses
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ROM = FLASH_P2V( CYGNUM_FLASH_BASE );
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ROM = FLASH_P2V( CYGNUM_FLASH_BASE );
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#ifdef CYGOPT_FLASH_IS_BOOTBLOCK
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#ifdef CYGOPT_FLASH_IS_BOOTBLOCK
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// BootBlock flash does not support full Read_Query - we have do a
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// BootBlock flash does not support full Read_Query - we have do a
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// table oriented thing above, after getting just two bytes of results:
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// table oriented thing above, after getting just two bytes of results:
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ROM[0] = FLASH_Read_ID;
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ROM[0] = FLASH_Read_ID;
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i = 2;
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i = 2;
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#else
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#else
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// StrataFlash supports the full Read_Query op:
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// StrataFlash supports the full Read_Query op:
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ROM[0] = FLASH_Read_Query;
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ROM[0] = FLASH_Read_Query;
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i = sizeof(struct FLASH_query);
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i = sizeof(struct FLASH_query);
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#endif // Not CYGOPT_FLASH_IS_BOOTBLOCK
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#endif // Not CYGOPT_FLASH_IS_BOOTBLOCK
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for (cnt = CNT; cnt > 0; cnt--) ;
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for (cnt = CNT; cnt > 0; cnt--) ;
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for ( /* i */; i > 0; i-- ) {
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for ( /* i */; i > 0; i-- ) {
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// It is very deliberate that data is chars NOT flash_t:
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// It is very deliberate that data is chars NOT flash_t:
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// The info comes out in bytes regardless of device.
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// The info comes out in bytes regardless of device.
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*data++ = (unsigned char) (*ROM++);
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*data++ = (unsigned char) (*ROM++);
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#ifndef CYGOPT_FLASH_IS_BOOTBLOCK
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#ifndef CYGOPT_FLASH_IS_BOOTBLOCK
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# if 8 == CYGNUM_FLASH_WIDTH
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# if 8 == CYGNUM_FLASH_WIDTH
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// strata flash with 'byte-enable' contains the configuration data
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// strata flash with 'byte-enable' contains the configuration data
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// at even addresses
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// at even addresses
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++ROM;
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++ROM;
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# endif
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# endif
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#endif
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#endif
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}
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}
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ROM[0] = FLASH_Reset;
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ROM[0] = FLASH_Reset;
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if (cache_on) {
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if (cache_on) {
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HAL_DCACHE_ENABLE();
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HAL_DCACHE_ENABLE();
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}
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}
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return 0;
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return 0;
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}
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}
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