1 //==========================================================================
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.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
44 // Contributors: gthomas
49 //####DESCRIPTIONEND####
51 //==========================================================================
53 #include <pkgconf/hal.h>
54 #include <cyg/hal/hal_arch.h>
55 #include <cyg/hal/hal_cache.h>
56 #include <cyg/hal/hal_io.h>
58 #define _FLASH_PRIVATE_
59 #include <cyg/io/flash.h>
63 #define _si(p) ((p[0]<<8)|p[1])
68 unsigned short data[4];
69 extern char flash_query, flash_query_end;
70 typedef int code_fun(unsigned char *);
71 code_fun *_flash_query;
72 int code_len, stat, num_regions, region_size;
74 // Copy 'program' code to RAM for execution
75 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
76 _flash_query = (code_fun *)flash_info.work_space;
77 memcpy(_flash_query, &flash_query, code_len);
78 HAL_DCACHE_SYNC(); // Should guarantee this code will run
80 stat = (*_flash_query)(data);
82 (*flash_info.pf)("stat = %x\n", stat);
83 dump_buf(data, sizeof(data));
86 if (data[0] != FLASH_Atmel_code) {
87 (*flash_info.pf)("Not Atmel = %x\n", data[0]);
91 if (data[1] == (unsigned short)FLASH_ATMEL_29LV1024) {
95 (*flash_info.pf)("Unknown device type: %x\n", data[1]);
100 flash_info.block_size = region_size;
101 flash_info.blocks = num_regions;
102 flash_info.start = (void *)0x01010000;
103 flash_info.end = (void *)(0x01010000+(num_regions*region_size));
107 // Map a hardware status to a package error
109 flash_hwr_map_error(int err)
112 (*flash_info.pf)("Err = %x\n", err);
113 return FLASH_ERR_PROGRAM;
119 // See if a range of FLASH addresses overlaps currently running code
121 flash_code_overlaps(void *start, void *end)
123 extern char _stext[], _etext[];
125 return ((((unsigned long)&_stext >= (unsigned long)start) &&
126 ((unsigned long)&_stext < (unsigned long)end)) ||
127 (((unsigned long)&_etext >= (unsigned long)start) &&
128 ((unsigned long)&_etext < (unsigned long)end)));