blob: 962d7f4ac6276c598bedf42755e5f711a9c51925 (
plain)
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
188
189
190
191
192
193
194
195
196
|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Library of helpers for test scripts.
set -e
DIR=/sys/devices/virtual/misc/test_firmware
PROC_CONFIG="/proc/config.gz"
TEST_DIR=$(dirname $0)
print_reqs_exit()
{
echo "You must have the following enabled in your kernel:" >&2
cat $TEST_DIR/config >&2
exit 1
}
test_modprobe()
{
if [ ! -d $DIR ]; then
print_reqs_exit
fi
}
check_mods()
{
trap "test_modprobe" EXIT
if [ ! -d $DIR ]; then
modprobe test_firmware
fi
if [ ! -f $PROC_CONFIG ]; then
if modprobe configs 2>/dev/null; then
echo "Loaded configs module"
if [ ! -f $PROC_CONFIG ]; then
echo "You must have the following enabled in your kernel:" >&2
cat $TEST_DIR/config >&2
echo "Resorting to old heuristics" >&2
fi
else
echo "Failed to load configs module, using old heuristics" >&2
fi
fi
}
check_setup()
{
HAS_FW_LOADER_USER_HELPER="$(kconfig_has CONFIG_FW_LOADER_USER_HELPER=y)"
HAS_FW_LOADER_USER_HELPER_FALLBACK="$(kconfig_has CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y)"
PROC_FW_IGNORE_SYSFS_FALLBACK="0"
PROC_FW_FORCE_SYSFS_FALLBACK="0"
if [ -z $PROC_SYS_DIR ]; then
PROC_SYS_DIR="/proc/sys/kernel"
fi
FW_PROC="${PROC_SYS_DIR}/firmware_config"
FW_FORCE_SYSFS_FALLBACK="$FW_PROC/force_sysfs_fallback"
FW_IGNORE_SYSFS_FALLBACK="$FW_PROC/ignore_sysfs_fallback"
if [ -f $FW_FORCE_SYSFS_FALLBACK ]; then
PROC_FW_FORCE_SYSFS_FALLBACK="$(cat $FW_FORCE_SYSFS_FALLBACK)"
fi
if [ -f $FW_IGNORE_SYSFS_FALLBACK ]; then
PROC_FW_IGNORE_SYSFS_FALLBACK="$(cat $FW_IGNORE_SYSFS_FALLBACK)"
fi
if [ "$PROC_FW_FORCE_SYSFS_FALLBACK" = "1" ]; then
HAS_FW_LOADER_USER_HELPER="yes"
HAS_FW_LOADER_USER_HELPER_FALLBACK="yes"
fi
if [ "$PROC_FW_IGNORE_SYSFS_FALLBACK" = "1" ]; then
HAS_FW_LOADER_USER_HELPER_FALLBACK="no"
HAS_FW_LOADER_USER_HELPER="no"
fi
if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then
OLD_TIMEOUT="$(cat /sys/class/firmware/timeout)"
fi
OLD_FWPATH="$(cat /sys/module/firmware_class/parameters/path)"
}
verify_reqs()
{
if [ "$TEST_REQS_FW_SYSFS_FALLBACK" = "yes" ]; then
if [ ! "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then
echo "usermode helper disabled so ignoring test"
exit 0
fi
fi
}
setup_tmp_file()
{
FWPATH=$(mktemp -d)
FW="$FWPATH/test-firmware.bin"
echo "ABCD0123" >"$FW"
NAME=$(basename "$FW")
if [ "$TEST_REQS_FW_SET_CUSTOM_PATH" = "yes" ]; then
echo -n "$FWPATH" >/sys/module/firmware_class/parameters/path
fi
}
__setup_random_file()
{
RANDOM_FILE_PATH="$(mktemp -p $FWPATH)"
# mktemp says dry-run -n is unsafe, so...
if [[ "$1" = "fake" ]]; then
rm -rf $RANDOM_FILE_PATH
sync
else
echo "ABCD0123" >"$RANDOM_FILE_PATH"
fi
echo $RANDOM_FILE_PATH
}
setup_random_file()
{
echo $(__setup_random_file)
}
setup_random_file_fake()
{
echo $(__setup_random_file fake)
}
proc_set_force_sysfs_fallback()
{
if [ -f $FW_FORCE_SYSFS_FALLBACK ]; then
echo -n $1 > $FW_FORCE_SYSFS_FALLBACK
check_setup
fi
}
proc_set_ignore_sysfs_fallback()
{
if [ -f $FW_IGNORE_SYSFS_FALLBACK ]; then
echo -n $1 > $FW_IGNORE_SYSFS_FALLBACK
check_setup
fi
}
proc_restore_defaults()
{
proc_set_force_sysfs_fallback 0
proc_set_ignore_sysfs_fallback 0
}
test_finish()
{
if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then
echo "$OLD_TIMEOUT" >/sys/class/firmware/timeout
fi
if [ "$TEST_REQS_FW_SET_CUSTOM_PATH" = "yes" ]; then
if [ "$OLD_FWPATH" = "" ]; then
# A zero-length write won't work; write a null byte
printf '\000' >/sys/module/firmware_class/parameters/path
else
echo -n "$OLD_FWPATH" >/sys/module/firmware_class/parameters/path
fi
fi
if [ -f $FW ]; then
rm -f "$FW"
fi
if [ -d $FWPATH ]; then
rm -rf "$FWPATH"
fi
proc_restore_defaults
}
kconfig_has()
{
if [ -f $PROC_CONFIG ]; then
if zgrep -q $1 $PROC_CONFIG 2>/dev/null; then
echo "yes"
else
echo "no"
fi
else
# We currently don't have easy heuristics to infer this
# so best we can do is just try to use the kernel assuming
# you had enabled it. This matches the old behaviour.
if [ "$1" = "CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y" ]; then
echo "yes"
elif [ "$1" = "CONFIG_FW_LOADER_USER_HELPER=y" ]; then
if [ -d /sys/class/firmware/ ]; then
echo yes
else
echo no
fi
fi
fi
}
|
