1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2008 Claus Gindhart <claus.gindhart@kontron.com>
* Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* This module is designed for supporting the devices
* ST M50FLW040A (not yet tested)
* ST M50FLW040B (not yet tested)
* ST M50FLW080A
* ST M50FLW080B (not yet tested)
*/
#include "flash.h"
#include "flashchips.h"
#include "chipdrivers.h"
/*
* claus.gindhart@kontron.com
* The ST M50FLW080B and STM50FLW080B chips have to be unlocked,
* before you can erase them or write to them.
*/
static int unlock_block_stm50flw0x0x(struct flashchip *flash, int offset)
{
chipaddr wrprotect = flash->virtual_registers + 2;
static const uint8_t unlock_sector = 0x00;
int j;
/*
* These chips have to be unlocked before you can erase them or write
* to them. The size of the locking sectors depends on the type
* of chip.
*
* Sometimes, the BIOS does this for you; so you probably
* don't need to worry about that.
*/
/* Check, if it's is a top/bottom-block with 4k-sectors. */
/* TODO: What about the other types? */
if ((offset == 0) ||
(offset == (flash->model_id == ST_M50FLW080A ? 0xE0000 : 0x10000))
|| (offset == 0xF0000)) {
// unlock each 4k-sector
for (j = 0; j < 0x10000; j += 0x1000) {
msg_cdbg("unlocking at 0x%x\n", offset + j);
chip_writeb(unlock_sector, wrprotect + offset + j);
if (chip_readb(wrprotect + offset + j) != unlock_sector) {
msg_cerr("Cannot unlock sector @ 0x%x\n",
offset + j);
return -1;
}
}
} else {
msg_cdbg("unlocking at 0x%x\n", offset);
chip_writeb(unlock_sector, wrprotect + offset);
if (chip_readb(wrprotect + offset) != unlock_sector) {
msg_cerr("Cannot unlock sector @ 0x%x\n", offset);
return -1;
}
}
return 0;
}
int unlock_stm50flw0x0x(struct flashchip *flash)
{
int i;
for (i = 0; i < flash->total_size * 1024; i+= flash->page_size) {
if(unlock_block_stm50flw0x0x(flash, i)) {
msg_cerr("UNLOCK FAILED!\n");
return -1;
}
}
return 0;
}
/* This function is unused. */
int erase_sector_stm50flw0x0x(struct flashchip *flash, unsigned int sector, unsigned int sectorsize)
{
chipaddr bios = flash->virtual_memory + sector;
// clear status register
chip_writeb(0x50, bios);
// now start it
chip_writeb(0x32, bios);
chip_writeb(0xd0, bios);
programmer_delay(10);
wait_82802ab(flash);
if (check_erased_range(flash, sector, sectorsize)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
return 0;
}
/* FIXME: This function is not a real chip erase function. */
int erase_chip_stm50flw0x0x(struct flashchip *flash, unsigned int addr, unsigned int blocklen)
{
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
if ((addr != 0) || (blocklen != flash->total_size * 1024)) {
msg_cerr("%s called with incorrect arguments\n",
__func__);
return -1;
}
for (i = 0; i < total_size / page_size; i++) {
//if (unlock_block_stm50flw0x0x(flash, i * page_size)) {
// msg_cerr("UNLOCK FAILED!\n");
// return -1;
//}
if (erase_block_82802ab(flash, i * page_size, page_size)) {
msg_cerr("ERASE FAILED!\n");
return -1;
}
}
return 0;
}
|
