Mercurial > ecos

annotate packages/devs/flash/intel/strata/current/src/flash_unlock_block.c @ 1209:b33e882f6b64

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use .2ram strategy - from Jani Monoses
author gthomas
date Wed, 10 Sep 2003 20:52:52 +0000
parents 59e96106029e
children 4abdcd2f65a9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
1 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
2 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
3 // flash_unlock_block.c
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
4 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
5 // Flash programming
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
6 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
7 //==========================================================================
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
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: 156
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: 156
diff changeset
12 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
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: 156
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: 156
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: 156
diff changeset
16 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
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: 156
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: 156
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: 156
diff changeset
20 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
21 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
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: 156
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: 156
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: 156
diff changeset
25 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
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: 156
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: 156
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: 156
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: 156
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: 156
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: 156
diff changeset
32 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
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: 156
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: 156
diff changeset
35 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
210
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST
jlarmour
parents: 208
diff changeset
37 // at http://sources.redhat.com/ecos/ecos-license/
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
38 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
39 //####ECOSGPLCOPYRIGHTEND####
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
40 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
41 //#####DESCRIPTIONBEGIN####
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
42 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
43 // Author(s): gthomas, hmt
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
44 // Contributors: gthomas
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
45 // Date: 2001-02-14
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
46 // Purpose:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
47 // Description:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
48 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
49 //####DESCRIPTIONEND####
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
50 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
51 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
52
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
53 #include "strata.h"
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
54
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
55
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
56 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
57 // The difficulty with this operation is that the hardware does not support
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
58 // unlocking single blocks. However, the logical layer would like this to
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
59 // be the case, so this routine emulates it. The hardware can clear all of
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
60 // the locks in the device at once. This routine will use that approach and
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
61 // then reset the regions which are known to be locked.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
62 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
63
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
64 #define MAX_FLASH_BLOCKS 128
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
65
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
66 int
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
67 flash_unlock_block(volatile flash_t *block, int block_size, int blocks)
1209
b33e882f6b64 Use .2ram strategy - from Jani Monoses
gthomas
parents: 903
diff changeset
68 __attribute__ ((section (".2ram.flash_unlock_block")));
b33e882f6b64 Use .2ram strategy - from Jani Monoses
gthomas
parents: 903
diff changeset
69 int
b33e882f6b64 Use .2ram strategy - from Jani Monoses
gthomas
parents: 903
diff changeset
70 flash_unlock_block(volatile flash_t *block, int block_size, int blocks)
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
71 {
286
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
72 volatile flash_t *ROM;
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
73 flash_t stat;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
74 int timeout = 5000000;
286
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
75 #ifndef CYGOPT_FLASH_IS_SYNCHRONOUS
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
76 int i;
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
77 volatile flash_t *bp, *bpv;
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
78 unsigned char is_locked[MAX_FLASH_BLOCKS];
286
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
79 #endif
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
80
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
81 // Get base address and map addresses to virtual addresses
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
82 ROM = FLASH_P2V( CYGNUM_FLASH_BASE_MASK & (unsigned int)block );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
83 block = FLASH_P2V(block);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
84
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
85 // Clear any error conditions
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
86 ROM[0] = FLASH_Clear_Status;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
87
286
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
88 #ifdef CYGOPT_FLASH_IS_SYNCHRONOUS
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
89 // Clear lock bit
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
90 block[0] = FLASH_Clear_Locks;
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
91 block[0] = FLASH_Clear_Locks_Confirm; // Confirmation
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
92 while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
93 if (--timeout == 0) break;
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
94 }
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
95 #else
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
96 // Get current block lock state. This needs to access each block on
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
97 // the device so currently locked blocks can be re-locked.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
98 bp = ROM;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
99 for (i = 0; i < blocks; i++) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
100 bpv = FLASH_P2V( bp );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
101 *bpv = FLASH_Read_Query;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
102 if (bpv == block) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
103 is_locked[i] = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
104 } else {
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
105 #if 8 == CYGNUM_FLASH_WIDTH
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
106 is_locked[i] = bpv[4];
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
107 #else
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
108 is_locked[i] = bpv[2];
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 156
diff changeset
109 # endif
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
110 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
111 bp += block_size / sizeof(*bp);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
112 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
113
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
114 // Clears all lock bits
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
115 ROM[0] = FLASH_Clear_Locks;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
116 ROM[0] = FLASH_Clear_Locks_Confirm; // Confirmation
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
117 timeout = 5000000;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
118 while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
119 if (--timeout == 0) break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
120 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
121
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
122 // Restore the lock state
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
123 bp = ROM;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
124 for (i = 0; i < blocks; i++) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
125 bpv = FLASH_P2V( bp );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
126 if (is_locked[i]) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
127 *bpv = FLASH_Set_Lock;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
128 *bpv = FLASH_Set_Lock_Confirm; // Confirmation
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
129 timeout = 5000000;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
130 while(((stat = ROM[0]) & FLASH_Status_Ready) != FLASH_Status_Ready) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
131 if (--timeout == 0) break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
132 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
133 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
134 bp += block_size / sizeof(*bp);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
135 }
286
845276b93eaa Add support for K-series (synchronous) strataflash parts.
msalter
parents: 210
diff changeset
136 #endif // CYGOPT_FLASH_IS_SYNCHRONOUS
156
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
137
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
138 // Restore ROM to "normal" mode
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
139 ROM[0] = FLASH_Reset;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
140
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
141 return stat;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
diff changeset
142 }