1 //==========================================================================
5 // Flash programming for Fujitsu/AMD device on SH SE77X9 board
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
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34 // this file might be covered by the GNU General Public License.
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37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
44 // Contributors: jskov
49 //####DESCRIPTIONEND####
51 //==========================================================================
53 #include <cyg/infra/cyg_type.h>
55 //--------------------------------------------------------------------------
58 #define CYGNUM_FLASH_INTERLEAVE (2)
59 #define CYGNUM_FLASH_SERIES (1)
60 #define CYGNUM_FLASH_WIDTH (16)
61 #define CYGNUM_FLASH_BASE (plf_flash_base)
63 static cyg_uint32 plf_flash_base;
65 //--------------------------------------------------------------------------
66 // Platform specific extras
68 static void plf_flash_init(void);
69 #define CYGHWR_FLASH_AM29XXXXX_PLF_INIT() plf_flash_init()
71 //--------------------------------------------------------------------------
72 // Now include the driver code.
73 #include "cyg/io/flash_am29xxxxx.inl"
75 //--------------------------------------------------------------------------
76 // Magic to determine location of flash
77 // This works by querying at the location where we expect the EPROM to
78 // be. Then the returned data is compared with the data at that location.
79 // If there's a match, assume that to be the location of the EPROM.
80 // Otherwise it's at the other location.
82 // This is done to avoid having separate configurations for the two board
83 // configurations. This is simple, has negligible overhead, and Just Works.
90 plf_flash_base = 0xa1000000;
93 p = (flash_data_t*)0xa1000000;
94 if (id[0] == *p++ && id[1] == *p)
95 plf_flash_base = 0xa0000000;
97 // Make that the cached region.
98 plf_flash_base &= ~0x20000000;
101 // ------------------------------------------------------------------------
102 // EOF sh_se77x9_flash.c