Mercurial > flash_v2

annotate packages/devs/flash/arm/at91/current/src/at91_flash.c @ 208:e0c0827131d1 ecos

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents e7780801e1a7
children d2c90368aeef
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
175
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
1 //==========================================================================
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
2 //
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
3 // at91_flash.c
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
4 //
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
5 // Flash programming
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
6 //
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
7 //==========================================================================
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
10 // This file is part of eCos, the Embedded Configurable Operating System.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
12 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
13 // eCos is free software; you can redistribute it and/or modify it under
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
14 // the terms of the GNU General Public License as published by the Free
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
15 // Software Foundation; either version 2 or (at your option) any later version.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
16 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
20 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
21 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
22 // You should have received a copy of the GNU General Public License along
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
25 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
26 // As a special exception, if other files instantiate templates or use macros
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
27 // or inline functions from this file, or you compile this file and link it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
28 // with other works to produce a work based on this file, this file does not
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
29 // by itself cause the resulting work to be covered by the GNU General Public
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
30 // License. However the source code for this file must still be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
31 // in accordance with section (3) of the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
32 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
33 // This exception does not invalidate any other reasons why a work based on
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
34 // this file might be covered by the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
35 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
37 // at http://sources.redhat.com/ecos/ecos-license
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
38 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 175
diff changeset
39 //####ECOSGPLCOPYRIGHTEND####
175
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
40 //==========================================================================
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
41 //#####DESCRIPTIONBEGIN####
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
42 //
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
43 // Author(s): gthomas
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
44 // Contributors: gthomas
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
45 // Date: 2001-07-17
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
46 // Purpose:
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
47 // Description:
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
48 //
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
49 //####DESCRIPTIONEND####
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
50 //
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
51 //==========================================================================
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
52
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
53 #include <pkgconf/hal.h>
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
54 #include <cyg/hal/hal_arch.h>
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
55 #include <cyg/hal/hal_cache.h>
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
56 #include <cyg/hal/hal_io.h>
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
57
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
58 #define _FLASH_PRIVATE_
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
59 #include <cyg/io/flash.h>
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
60
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
61 #include "flash.h"
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
62
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
63 #define _si(p) ((p[0]<<8)|p[1])
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
64
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
65 int
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
66 flash_hwr_init(void)
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
67 {
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
68 unsigned short data[4];
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
69 extern char flash_query, flash_query_end;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
70 typedef int code_fun(unsigned char *);
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
71 code_fun *_flash_query;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
72 int code_len, stat, num_regions, region_size;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
73
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
74 // Copy 'program' code to RAM for execution
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
75 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
76 _flash_query = (code_fun *)flash_info.work_space;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
77 memcpy(_flash_query, &flash_query, code_len);
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
78 HAL_DCACHE_SYNC(); // Should guarantee this code will run
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
79
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
80 stat = (*_flash_query)(data);
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
81 #if 0
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
82 (*flash_info.pf)("stat = %x\n", stat);
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
83 dump_buf(data, sizeof(data));
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
84 #endif
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
85
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
86 if (data[0] != FLASH_Atmel_code) {
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
87 (*flash_info.pf)("Not Atmel = %x\n", data[0]);
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
88 return FLASH_ERR_HWR;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
89 }
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
90
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
91 if (data[1] == (unsigned short)FLASH_ATMEL_29LV1024) {
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
92 num_regions = 256;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
93 region_size = 0x100;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
94 } else {
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
95 (*flash_info.pf)("Unknown device type: %x\n", data[1]);
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
96 return FLASH_ERR_HWR;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
97 }
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
98
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
99 // Hard wired for now
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
100 flash_info.block_size = region_size;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
101 flash_info.blocks = num_regions;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
102 flash_info.start = (void *)0x01010000;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
103 flash_info.end = (void *)(0x01010000+(num_regions*region_size));
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
104 return FLASH_ERR_OK;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
105 }
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
106
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
107 // Map a hardware status to a package error
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
108 int
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
109 flash_hwr_map_error(int err)
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
110 {
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
111 if (err) {
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
112 (*flash_info.pf)("Err = %x\n", err);
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
113 return FLASH_ERR_PROGRAM;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
114 } else {
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
115 return FLASH_ERR_OK;
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
116 }
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
117 }
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
118
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
119 // See if a range of FLASH addresses overlaps currently running code
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
120 bool
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
121 flash_code_overlaps(void *start, void *end)
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
122 {
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
123 extern char _stext[], _etext[];
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
124
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
125 return ((((unsigned long)&_stext >= (unsigned long)start) &&
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
126 ((unsigned long)&_stext < (unsigned long)end)) ||
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
127 (((unsigned long)&_etext >= (unsigned long)start) &&
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
128 ((unsigned long)&_etext < (unsigned long)end)));
e7780801e1a7 Merge from eCos master repository on 2001-07-31-19:15:01-BST
jlarmour
parents:
diff changeset
129 }