test_firmware: add simple firmware firmware test library
We'll expland on this later, for now just add basic module checker. While at it, move this all to use /bin/bash as we'll have much more flexibility with it. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#!/bin/sh
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# This validates that the kernel will fall back to using the fallback mechanism
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# to load firmware it can't find on disk itself. We must request a firmware
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# won't find so that we can do the load ourself manually.
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set -e
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modprobe test_firmware
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TEST_DIR=$(dirname $0)
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source $TEST_DIR/fw_lib.sh
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DIR=/sys/devices/virtual/misc/test_firmware
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check_mods
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# CONFIG_FW_LOADER_USER_HELPER has a sysfs class under /sys/class/firmware/
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# These days no one enables CONFIG_FW_LOADER_USER_HELPER so check for that
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#!/bin/sh
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# This validates that the kernel will load firmware out of its list of
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# firmware locations on disk. Since the user helper does similar work,
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# know so we can be sure we're not accidentally testing the user helper.
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set -e
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DIR=/sys/devices/virtual/misc/test_firmware
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TEST_DIR=$(dirname $0)
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source $TEST_DIR/fw_lib.sh
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test_modprobe()
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{
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if [ ! -d $DIR ]; then
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echo "$0: $DIR not present"
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echo "You must have the following enabled in your kernel:"
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cat $TEST_DIR/config
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exit 1
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fi
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}
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trap "test_modprobe" EXIT
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if [ ! -d $DIR ]; then
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modprobe test_firmware
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fi
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check_mods
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# CONFIG_FW_LOADER_USER_HELPER has a sysfs class under /sys/class/firmware/
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# These days most distros enable CONFIG_FW_LOADER_USER_HELPER but disable
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44
tools/testing/selftests/firmware/fw_lib.sh
Executable file
44
tools/testing/selftests/firmware/fw_lib.sh
Executable file
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Library of helpers for test scripts.
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set -e
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DIR=/sys/devices/virtual/misc/test_firmware
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PROC_CONFIG="/proc/config.gz"
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TEST_DIR=$(dirname $0)
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print_reqs_exit()
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{
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echo "You must have the following enabled in your kernel:" >&2
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cat $TEST_DIR/config >&2
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exit 1
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}
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test_modprobe()
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{
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if [ ! -d $DIR ]; then
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print_reqs_exit
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fi
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}
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check_mods()
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{
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trap "test_modprobe" EXIT
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if [ ! -d $DIR ]; then
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modprobe test_firmware
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fi
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if [ ! -f $PROC_CONFIG ]; then
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if modprobe configs 2>/dev/null; then
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echo "Loaded configs module"
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if [ ! -f $PROC_CONFIG ]; then
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echo "You must have the following enabled in your kernel:" >&2
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cat $TEST_DIR/config >&2
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echo "Resorting to old heuristics" >&2
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fi
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else
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echo "Failed to load configs module, using old heuristics" >&2
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fi
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fi
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}
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