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#!/usr/bin/python
#
# Copyright 2022 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Test cases for Trusty Linux Driver."""
import os
import unittest
def ReadFile(file_path):
with open(file_path, 'r') as f:
# Strip all trailing spaces, newline and null characters.
return f.read().rstrip(' \n\x00')
def WriteFile(file_path, s):
with open(file_path, 'w') as f:
f.write(s)
def IsTrustySupported():
return os.path.exists("/dev/trusty-ipc-dev0")
@unittest.skipIf(not IsTrustySupported(), "Device does not support Trusty")
class TrustyDriverTest(unittest.TestCase):
def testIrqDriverBinding(self):
WriteFile("/sys/bus/platform/drivers/trusty-irq/unbind", "trusty:irq")
WriteFile("/sys/bus/platform/drivers/trusty-irq/bind", "trusty:irq")
def testLogDriverBinding(self):
WriteFile("/sys/bus/platform/drivers/trusty-log/unbind", "trusty:log")
WriteFile("/sys/bus/platform/drivers/trusty-log/bind", "trusty:log")
@unittest.skip("TODO(b/142275662): virtio remove currently hangs")
def testVirtioDriverBinding(self):
WriteFile("/sys/bus/platform/drivers/trusty-virtio/unbind",
"trusty:virtio")
WriteFile("/sys/bus/platform/drivers/trusty-virtio/bind",
"trusty:virtio")
@unittest.skip("TODO(b/142275662): virtio remove currently hangs")
def testTrustyDriverBinding(self):
WriteFile("/sys/bus/platform/drivers/trusty/unbind", "trusty")
WriteFile("/sys/bus/platform/drivers/trusty/bind", "trusty")
def testTrustyDriverVersion(self):
ver = ReadFile("/sys/bus/platform/devices/trusty/trusty_version")
self.assertTrue(ver.startswith("Project:"))
def testUntaintedLinux(self):
tainted = ReadFile("/proc/sys/kernel/tainted")
self.assertEqual(tainted, "0")
# stdcall test with shared memory buffers.
# Each test run takes up to 4 arguments:
# <obj_size>,<obj_count=1>,<repeat_share=1>,<repeat_access=3>
#
# Test single 4K shared memory object.
# Test 10 8MB objects, shared twice, each accessed twice. (8MB non-
# contiguous object is large enough to need several 4KB messages to
# describe)
# Test sharing 2 8MB objects 100 times without accessing it.
# Test 10 4K shared memory objects, shared 10 times, each accessed
# 10 times.
def testStdCall(self):
test = "/sys/devices/platform/trusty/trusty:test/trusty_test_run"
args = "0x1000 0x800000,10,2,2 0x800000,2,100,0 0x1000,10,10,10"
WriteFile(test, args)
if __name__ == '__main__':
unittest.main()
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