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
|
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2007 Carl-Daniel Hailfinger
*
* 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
*/
/*
* EN29F512 has 1C,21
* EN29F010 has 1C,20
* EN29F040A has 1C,04
* EN29LV010 has 1C,6E and uses short F0 reset sequence
* EN29LV040(A) has 1C,4F and uses short F0 reset sequence
*/
#include "flash.h"
int probe_en29f512(struct flashchip *flash)
{
chipaddr bios = flash->virtual_memory;
uint8_t id1, id2;
chip_writeb(0xAA, bios + 0x555);
chip_writeb(0x55, bios + 0x2AA);
chip_writeb(0x90, bios + 0x555);
programmer_delay(10);
id1 = chip_readb(bios + 0x100);
id2 = chip_readb(bios + 0x101);
/* exit by writing F0 anywhere? or the code below */
chip_writeb(0xAA, bios + 0x555);
chip_writeb(0x55, bios + 0x2AA);
chip_writeb(0xF0, bios + 0x555);
printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id)
return 1;
return 0;
}
/*
* EN29F002AT has 1C,92
* EN29F002AB has 1C,97
*/
/* This does not seem to function properly for EN29F002NT. */
int probe_en29f002a(struct flashchip *flash)
{
chipaddr bios = flash->virtual_memory;
uint8_t id1, id2;
chip_writeb(0xAA, bios + 0x555);
chip_writeb(0x55, bios + 0xAAA);
chip_writeb(0x90, bios + 0x555);
programmer_delay(10);
id1 = chip_readb(bios + 0x100);
id2 = chip_readb(bios + 0x101);
/* exit by writing F0 anywhere? or the code below */
chip_writeb(0xAA, bios + 0x555);
chip_writeb(0x55, bios + 0xAAA);
chip_writeb(0xF0, bios + 0x555);
printf_debug("%s: id1 0x%x, id2 0x%x\n", __func__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id)
return 1;
return 0;
}
|
