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
|
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2009,2010 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; 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
*/
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/types.h>
#include <errno.h>
#include "flash.h"
#if defined(__FreeBSD__) || defined(__DragonFly__)
int io_fd;
#endif
void get_io_perms(void)
{
#if defined (__sun) && (defined(__i386) || defined(__amd64))
if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) != 0) {
#elif defined(__FreeBSD__) || defined (__DragonFly__)
if ((io_fd = open("/dev/io", O_RDWR)) < 0) {
#elif __DJGPP__
if (0) {
#else
if (iopl(3) != 0) {
#endif
fprintf(stderr, "ERROR: Could not get I/O privileges (%s).\n"
"You need to be root.\n", strerror(errno));
exit(1);
}
}
void release_io_perms(void)
{
#if defined(__FreeBSD__) || defined(__DragonFly__)
close(io_fd);
#endif
}
#ifdef __DJGPP__
extern unsigned short segFS;
#include <sys/farptr.h>
void mmio_writeb(uint8_t val, void *addr)
{
_farpokeb(segFS, (unsigned long) addr, val);
}
void mmio_writew(uint16_t val, void *addr)
{
_farpokew(segFS, (unsigned long) addr, val);
}
void mmio_writel(uint32_t val, void *addr)
{
_farpokel(segFS, (unsigned long) addr, val);
}
uint8_t mmio_readb(void *addr)
{
return _farpeekb(segFS, (unsigned long) addr);
}
uint16_t mmio_readw(void *addr)
{
return _farpeekw(segFS, (unsigned long) addr);
}
uint32_t mmio_readl(void *addr)
{
return _farpeekl(segFS, (unsigned long) addr);
}
#else
void mmio_writeb(uint8_t val, void *addr)
{
*(volatile uint8_t *) addr = val;
}
void mmio_writew(uint16_t val, void *addr)
{
*(volatile uint16_t *) addr = val;
}
void mmio_writel(uint32_t val, void *addr)
{
*(volatile uint32_t *) addr = val;
}
uint8_t mmio_readb(void *addr)
{
return *(volatile uint8_t *) addr;
}
uint16_t mmio_readw(void *addr)
{
return *(volatile uint16_t *) addr;
}
uint32_t mmio_readl(void *addr)
{
return *(volatile uint32_t *) addr;
}
#endif
|
