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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2000 Silicon Integrated System Corporation
* Copyright (C) 2009 Kontron Modular Computers
* 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
*/
/* Adapted from the Intel FW hub stuff for 82802ax parts. */
#include <stdlib.h>
#include <string.h>
#include "flash.h"
#include "chipdrivers.h"
// I need that Berkeley bit-map printer
void print_sst_fwhub_status(uint8_t status)
{
printf("%s", status & 0x80 ? "Ready:" : "Busy:");
printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
}
int check_sst_fwhub_block_lock(struct flashchip *flash, int offset)
{
chipaddr registers = flash->virtual_registers;
uint8_t blockstatus;
blockstatus = chip_readb(registers + offset + 2);
printf_debug("Lock status for 0x%06x (size 0x%06x) is %02x, ",
offset, flash->page_size, blockstatus);
switch (blockstatus & 0x3) {
case 0x0:
printf_debug("full access\n");
break;
case 0x1:
printf_debug("write locked\n");
break;
case 0x2:
printf_debug("locked open\n");
break;
case 0x3:
printf_debug("write locked down\n");
break;
}
/* Return content of the write_locked bit */
return blockstatus & 0x1;
}
int clear_sst_fwhub_block_lock(struct flashchip *flash, int offset)
{
chipaddr registers = flash->virtual_registers;
uint8_t blockstatus;
blockstatus = check_sst_fwhub_block_lock(flash, offset);
if (blockstatus) {
printf_debug("Trying to clear lock for 0x%06x... ", offset)
chip_writeb(0, registers + offset + 2);
blockstatus = check_sst_fwhub_block_lock(flash, offset);
printf_debug("%s\n", (blockstatus) ? "failed" : "OK");
}
return blockstatus;
}
/* probe_jedec works fine for probing */
int probe_sst_fwhub(struct flashchip *flash)
{
int i;
if (probe_jedec(flash) == 0)
return 0;
for (i = 0; i < flash->total_size * 1024; i += flash->page_size)
check_sst_fwhub_block_lock(flash, i);
return 1;
}
int erase_sst_fwhub_block(struct flashchip *flash, unsigned int offset, unsigned int page_size)
{
uint8_t blockstatus = clear_sst_fwhub_block_lock(flash, offset);
if (blockstatus) {
printf("Block lock clearing failed, not erasing block "
"at 0x%06x\n", offset);
return 1;
}
if (erase_block_jedec(flash, offset, page_size)) {
fprintf(stderr, "ERASE FAILED!\n");
return -1;
}
toggle_ready_jedec(flash->virtual_memory);
return 0;
}
int erase_sst_fwhub_sector(struct flashchip *flash, unsigned int offset, unsigned int page_size)
{
uint8_t blockstatus = clear_sst_fwhub_block_lock(flash, offset);
if (blockstatus) {
printf("Sector lock clearing failed, not erasing sector "
"at 0x%06x\n", offset);
return 1;
}
if (erase_sector_jedec(flash, offset, page_size)) {
fprintf(stderr, "ERASE FAILED!\n");
return -1;
}
toggle_ready_jedec(flash->virtual_memory);
return 0;
}
int erase_sst_fwhub(struct flashchip *flash)
{
int i;
unsigned int total_size = flash->total_size * 1024;
for (i = 0; i < total_size; i += flash->page_size) {
if (erase_sst_fwhub_block(flash, i, flash->page_size)) {
fprintf(stderr, "ERASE FAILED!\n");
return -1;
}
}
return 0;
}
int write_sst_fwhub(struct flashchip *flash, uint8_t *buf)
{
int i, rc;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
chipaddr bios = flash->virtual_memory;
uint8_t *readbuf = malloc(page_size);
printf("Programming page: ");
for (i = 0; i < total_size / page_size; i++) {
printf("%04d at address: 0x%08x", i, i * page_size);
/* Auto Skip Blocks, which already contain the desired data:
* Faster, because we only write, what has changed
* More secure, because blocks, which are excluded
* (with the exclude or layout feature)
* are not erased and rewritten; data is retained also
* in sudden power off situations
*/
flash->read(flash, readbuf, i * page_size, page_size);
if (memcmp((void *)(buf + i * page_size),
(void *)(readbuf), page_size)) {
rc = erase_sst_fwhub_block(flash, i * page_size,
page_size);
if (rc)
return 1;
write_sector_jedec_common(flash, buf + i * page_size,
bios + i * page_size, page_size, 0xffff);
}
printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
}
printf("\n");
return 0;
}
|
