1 /*
2 * Copyright (C) 2023 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <android/api-level.h>
18 #include <android-base/properties.h>
19 #include <gtest/gtest.h>
20 #include <vintf/VintfObject.h>
21
22 using android::vintf::VintfObject;
23 using android::vintf::RuntimeInfo;
24
get_config(const std::map<std::string,std::string> & configs,const std::string & key)25 std::optional<std::string> get_config(
26 const std::map<std::string, std::string>& configs, const std::string& key) {
27 auto it = configs.find(key);
28 if (it == configs.end()) {
29 return std::nullopt;
30 }
31 return it->second;
32 }
33
34 // Returns true if the device has the specified feature.
deviceSupportsFeature(const char * feature)35 static bool deviceSupportsFeature(const char* feature) {
36 bool device_supports_feature = false;
37 FILE* p = popen("pm list features", "re");
38 if (p) {
39 char* line = NULL;
40 size_t len = 0;
41 while (getline(&line, &len, p) > 0) {
42 if (strstr(line, feature)) {
43 device_supports_feature = true;
44 break;
45 }
46 }
47 if (line) {
48 free(line);
49 line = NULL;
50 }
51 pclose(p);
52 }
53 return device_supports_feature;
54 }
55
isTV()56 static bool isTV() {
57 return deviceSupportsFeature("android.software.leanback");
58 }
59
60 /*
61 * Tests that the kernel in use is meant to run on CPUs that support a
62 * 64-bit Instruction Set Architecture (ISA).
63 */
TEST(KernelISATest,KernelUses64BitISA)64 TEST(KernelISATest, KernelUses64BitISA) {
65 /*
66 * Exclude VSR-3.12 from Android TV
67 */
68
69 if (isTV()) GTEST_SKIP() << "Exempt from TV devices";
70 /*
71 * ro.vendor.api_level is the VSR API level, which is calculated
72 * as:
73 *
74 * vendor.api_level = min(ro.product.first_api_level, ro.board.[first_]api_level)
75 *
76 * If ro.board.api_level is defined, it is used for the comparison instead
77 * of ro.board.first_api_level.
78 */
79 int vendor_api_level = android::base::GetIntProperty("ro.vendor.api_level",
80 -1);
81
82 /*
83 * Ensure that we run this test for devices launching with Android 14+, but not
84 * devices that are upgrading to Android 14+.
85 */
86 if (vendor_api_level < __ANDROID_API_U__)
87 GTEST_SKIP() << "Exempt from KernelUses64BitISATest: ro.vendor.api_level ("
88 << vendor_api_level << ") < " << __ANDROID_API_U__;
89
90 std::shared_ptr<const RuntimeInfo> runtime_info = VintfObject::GetRuntimeInfo();
91 ASSERT_NE(nullptr, runtime_info);
92
93 const auto& configs = runtime_info->kernelConfigs();
94 ASSERT_EQ(get_config(configs, "CONFIG_64BIT"), "y") << "VSR-3.12: Devices "
95 << "launching with Android 14+ "
96 << "must support 64-bit ABIs and "
97 << "thus must use a 64-bit kernel.";
98 }
99