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
|
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2010 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; version 2 of the License.
*
* 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
*/
/*
* Contains the processor specific flash enables and system settings.
*/
#include "flash.h"
#include "programmer.h"
#if defined(__i386__) || defined(__x86_64__)
int processor_flash_enable(void)
{
/* On x86, flash access is not processor specific except on
* AMD Elan SC520, AMD Geode and maybe other SoC-style CPUs.
* FIXME: Move enable_flash_cs5536 and get_flashbase_sc520 here.
*/
return 0;
}
#else
#if defined (__MIPSEL__) && defined (__linux)
#include <stdio.h>
#include <string.h>
#include <ctype.h>
static int is_loongson(void)
{
FILE *cpuinfo;
cpuinfo = fopen("/proc/cpuinfo", "rb");
if (!cpuinfo)
return 0;
while (!feof(cpuinfo)) {
char line[512], *ptr;
if (fgets(line, sizeof(line), cpuinfo) == NULL)
break;
ptr = line;
while (*ptr && isspace((unsigned char)*ptr))
ptr++;
/* "cpu" part appears only with some Linux versions. */
if (strncmp(ptr, "cpu", sizeof("cpu") - 1) == 0)
ptr += sizeof("cpu") - 1;
while (*ptr && isspace((unsigned char)*ptr))
ptr++;
if (strncmp(ptr, "model", sizeof("model") - 1) != 0)
continue;
ptr += sizeof("model") - 1;
while (*ptr && isspace((unsigned char)*ptr))
ptr++;
if (*ptr != ':')
continue;
ptr++;
while (*ptr && isspace((unsigned char)*ptr))
ptr++;
fclose(cpuinfo);
return (strncmp(ptr, "ICT Loongson-2 V0.3",
sizeof("ICT Loongson-2 V0.3") - 1) == 0)
|| (strncmp(ptr, "Godson2 V0.3 FPU V0.1",
sizeof("Godson2 V0.3 FPU V0.1") - 1) == 0);
}
fclose(cpuinfo);
return 0;
}
#endif
int processor_flash_enable(void)
{
/* FIXME: detect loongson on FreeBSD and OpenBSD as well. */
#if defined (__MIPSEL__) && defined (__linux)
if (is_loongson()) {
flashbase = 0x1fc00000;
return 0;
}
#endif
/* Not implemented yet. Oh well. */
return 1;
}
#endif
|
