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Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [devs/] [flash/] [sh/] [hs7729pci/] [v2_0/] [src/] [sh_hs7729pci_flash.c] - Rev 27
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//========================================================================== // // sh_hs7729pci_flash.c // // Flash programming for Fujitsu/AMD device on SH HS7729PCI board // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 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): jskov // Contributors: jskov // Date: 2001-05-28 // Purpose: // Description: // //####DESCRIPTIONEND#### // //========================================================================== #include <cyg/infra/cyg_type.h> //-------------------------------------------------------------------------- // Device properties #define CYGNUM_FLASH_INTERLEAVE (2) #define CYGNUM_FLASH_SERIES (1) #define CYGNUM_FLASH_WIDTH (16) #define CYGNUM_FLASH_BASE (plf_flash_base) static cyg_uint32 plf_flash_base; //-------------------------------------------------------------------------- // Platform specific extras static void plf_flash_init(void); #define CYGHWR_FLASH_AM29XXXXX_PLF_INIT() plf_flash_init() //-------------------------------------------------------------------------- // Now include the driver code. #include "cyg/io/flash_am29xxxxx.inl" //-------------------------------------------------------------------------- // Magic to determine location of flash // This works by querying at the location where we expect the EPROM to // be. Then the returned data is compared with the data at that location. // If there's a match, assume that to be the location of the EPROM. // Otherwise it's at the other location. // // This is done to avoid having separate configurations for the two board // configurations. This is simple, has negligible overhead, and Just Works. void plf_flash_init(void) { flash_data_t id[2]; flash_data_t* p; plf_flash_base = 0xa0400000; flash_dev_query(id); p = (flash_data_t*)0xa0400000; if (id[0] == *p++ && id[1] == *p) plf_flash_base = 0xa0000000; // Make that the cached region. plf_flash_base &= ~0x20000000; } // ------------------------------------------------------------------------ // EOF sh_hs7729pci_flash.c
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