Import Mbed OS hard-float snapshot

storage/filesystem/littlefs/tests/TESTS/filesystem_recovery/resilience/main.cpp

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+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * 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.
+ */
+#include "mbed.h"
+#include "unity.h"
+#include "utest.h"
+#include "test_env.h"
+
+#include "atomic_usage.h"
+#include "ObservingBlockDevice.h"
+
+using namespace utest::v1;
+
+// test configuration
+#ifndef MBED_TEST_SIM_BLOCKDEVICE
+#error [NOT_SUPPORTED] Simulation block device required for resilience tests
+#else
+
+#ifndef MBED_TEST_SIM_BLOCKDEVICE_DECL
+#define MBED_TEST_SIM_BLOCKDEVICE_DECL MBED_TEST_SIM_BLOCKDEVICE bd(MBED_TEST_BLOCK_COUNT*512, 1, 1, 512)
+#endif
+
+#ifndef MBED_TEST_BLOCK_COUNT
+#define MBED_TEST_BLOCK_COUNT 64
+#endif
+
+#ifndef MBED_TEST_CYCLES
+#define MBED_TEST_CYCLES 10
+#endif
+
+#ifndef MBED_TEST_TIMEOUT
+#define MBED_TEST_TIMEOUT 480
+#endif
+
+// declarations
+#define STRINGIZE(x) STRINGIZE2(x)
+#define STRINGIZE2(x) #x
+#define INCLUDE(x) STRINGIZE(x.h)
+
+#include INCLUDE(MBED_TEST_SIM_BLOCKDEVICE)
+
+
+/**
+ * Check that the filesystem is valid after every change
+ *
+ * This test is to ensure that littlefs contains a valid filesystem at
+ * all times. This property is required for handling unexpected power
+ * loss.
+ */
+void test_resilience()
+{
+    MBED_TEST_SIM_BLOCKDEVICE_DECL;
+
+    // bring up to get block size
+    bd.init();
+    bd_size_t block_size = bd.get_erase_size();
+    bd.deinit();
+
+    SlicingBlockDevice slice(&bd, 0, MBED_TEST_BLOCK_COUNT * block_size);
+
+    // Setup the test
+    setup_atomic_operations(&slice, true);
+
+    // Run check on every write operation
+    ObservingBlockDevice observer(&slice);
+    observer.attach(check_atomic_operations);
+
+    // Perform operations
+    printf("Performing %i operations on flash\n", MBED_TEST_CYCLES);
+    for (int i = 1; i <= MBED_TEST_CYCLES; i++) {
+        int64_t ret = perform_atomic_operations(&observer);
+        TEST_ASSERT_EQUAL(i, ret);
+    }
+    printf("No errors detected\n");
+}
+
+Case cases[] = {
+    Case("test resilience", test_resilience),
+};
+
+utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
+{
+    GREENTEA_SETUP(MBED_TEST_TIMEOUT, "default_auto");
+    return greentea_test_setup_handler(number_of_cases);
+}
+
+Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
+
+int main()
+{
+    Harness::run(specification);
+}
+
+#endif // MBED_TEST_SIM_BLOCKDEVICE

storage/filesystem/littlefs/tests/TESTS/filesystem_recovery/resilience_functional/main.cpp

@@ -0,0 +1,121 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * 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.
+ */
+#include "mbed.h"
+#include "unity.h"
+#include "utest.h"
+#include "test_env.h"
+
+#include "atomic_usage.h"
+#include "ObservingBlockDevice.h"
+#include "LittleFileSystem.h"
+
+#include <string.h>
+
+using namespace utest::v1;
+
+
+// test configuration
+#ifndef MBED_TEST_BLOCKDEVICE
+#error [NOT_SUPPORTED] Non-volatile block device required for resilience_functional tests
+#else
+
+#ifndef MBED_TEST_BLOCKDEVICE_DECL
+#define MBED_TEST_BLOCKDEVICE_DECL MBED_TEST_BLOCKDEVICE bd
+#endif
+
+#ifndef MBED_TEST_BLOCK_COUNT
+#define MBED_TEST_BLOCK_COUNT 64
+#endif
+
+#ifndef MBED_TEST_CYCLES
+#define MBED_TEST_CYCLES 10
+#endif
+
+#ifndef MBED_TEST_TIMEOUT
+#define MBED_TEST_TIMEOUT 480
+#endif
+
+// declarations
+#define STRINGIZE(x) STRINGIZE2(x)
+#define STRINGIZE2(x) #x
+#define INCLUDE(x) STRINGIZE(x.h)
+
+#include INCLUDE(MBED_TEST_BLOCKDEVICE)
+
+MBED_TEST_BLOCKDEVICE_DECL;
+
+typedef enum {
+    CMD_STATUS_PASS,
+    CMD_STATUS_FAIL,
+    CMD_STATUS_CONTINUE,
+    CMD_STATUS_ERROR
+} cmd_status_t;
+
+void use_filesystem()
+{
+    // Perform operations
+    while (true) {
+        int64_t ret = perform_atomic_operations(&bd);
+        TEST_ASSERT(ret > 0);
+    }
+}
+
+static cmd_status_t handle_command(const char *key, const char *value)
+{
+    if (strcmp(key, "format") == 0) {
+        setup_atomic_operations(&bd, true);
+        greentea_send_kv("format_done", 1);
+        return CMD_STATUS_CONTINUE;
+
+    } else if (strcmp(key, "run") == 0) {
+        use_filesystem();
+        return CMD_STATUS_CONTINUE;
+
+    } else if (strcmp(key, "exit") == 0) {
+        if (strcmp(value, "pass") != 0) {
+            return CMD_STATUS_FAIL;
+        }
+        check_atomic_operations(&bd);
+        return CMD_STATUS_PASS;
+
+    } else {
+        return CMD_STATUS_ERROR;
+
+    }
+}
+
+int main()
+{
+    GREENTEA_SETUP(MBED_TEST_TIMEOUT, "unexpected_reset");
+
+    static char _key[10 + 1] = {};
+    static char _value[128 + 1] = {};
+
+    greentea_send_kv("start", 1);
+
+    // Handshake with host
+    cmd_status_t cmd_status = CMD_STATUS_CONTINUE;
+    while (CMD_STATUS_CONTINUE == cmd_status) {
+        memset(_key, 0, sizeof(_key));
+        memset(_value, 0, sizeof(_value));
+        greentea_parse_kv(_key, _value, sizeof(_key) - 1, sizeof(_value) - 1);
+        cmd_status = handle_command(_key, _value);
+    }
+
+    GREENTEA_TESTSUITE_RESULT(CMD_STATUS_PASS == cmd_status);
+}
+
+#endif // MBED_TEST_BLOCKDEVICE

storage/filesystem/littlefs/tests/TESTS/filesystem_recovery/wear_leveling/main.cpp

@@ -0,0 +1,122 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * 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.
+ */
+#include "mbed.h"
+#include "unity.h"
+#include "utest.h"
+#include "test_env.h"
+
+#include "atomic_usage.h"
+#include "ExhaustibleBlockDevice.h"
+#include "SlicingBlockDevice.h"
+
+using namespace utest::v1;
+
+// test configuration
+#ifndef MBED_TEST_SIM_BLOCKDEVICE
+#error [NOT_SUPPORTED] Simulation block device required for wear leveling tests
+#else
+
+#ifndef MBED_TEST_SIM_BLOCKDEVICE_DECL
+#define MBED_TEST_SIM_BLOCKDEVICE_DECL MBED_TEST_SIM_BLOCKDEVICE bd(MBED_TEST_BLOCK_COUNT*512, 1, 1, 512)
+#endif
+
+#ifndef MBED_TEST_BLOCK_COUNT
+#define MBED_TEST_BLOCK_COUNT 64
+#endif
+
+#ifndef MBED_TEST_ERASE_CYCLES
+#define MBED_TEST_ERASE_CYCLES 100
+#endif
+
+#ifndef MBED_TEST_TIMEOUT
+#define MBED_TEST_TIMEOUT 480
+#endif
+
+// declarations
+#define STRINGIZE(x) STRINGIZE2(x)
+#define STRINGIZE2(x) #x
+#define INCLUDE(x) STRINGIZE(x.h)
+
+#include INCLUDE(MBED_TEST_SIM_BLOCKDEVICE)
+
+
+static uint32_t test_wear_leveling_size(uint32_t block_count)
+{
+    MBED_TEST_SIM_BLOCKDEVICE_DECL;
+
+    // bring up to get block size
+    bd.init();
+    bd_size_t block_size = bd.get_erase_size();
+    bd.deinit();
+
+    SlicingBlockDevice slice(&bd, 0, block_count * block_size);
+    ExhaustibleBlockDevice ebd(&slice, MBED_TEST_ERASE_CYCLES);
+
+    printf("Testing size %llu bytes (%lux%llu) blocks\n",
+           block_count * block_size, block_count, block_size);
+    setup_atomic_operations(&ebd, true);
+
+    int64_t cycles = 0;
+    while (true) {
+        int64_t ret = perform_atomic_operations(&ebd);
+        check_atomic_operations(&ebd);
+        if (-1 == ret) {
+            break;
+        }
+        cycles++;
+        TEST_ASSERT_EQUAL(cycles, ret);
+
+    }
+
+    printf("  Simulated flash lasted %lli cylces\n", cycles);
+    return cycles;
+}
+
+/**
+ * Check that storage life is proportional to storage size
+ *
+ * This test is to ensure that littlefs is properly handling wear
+ * leveling. It does this by creating a simulated flash block device
+ * which can be worn out and then using it until it is exhausted.
+ * It then doubles the size of the block device and runs the same
+ * test. If the block device with twice the size lasts at least
+ * twice as long then the test passes.
+ */
+void test_wear_leveling()
+{
+    uint32_t cycles_1 = test_wear_leveling_size(MBED_TEST_BLOCK_COUNT / 2);
+    uint32_t cycles_2 = test_wear_leveling_size(MBED_TEST_BLOCK_COUNT / 1);
+    TEST_ASSERT(cycles_2 > cycles_1 * 2);
+}
+
+Case cases[] = {
+    Case("test wear leveling", test_wear_leveling),
+};
+
+utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
+{
+    GREENTEA_SETUP(MBED_TEST_TIMEOUT, "default_auto");
+    return greentea_test_setup_handler(number_of_cases);
+}
+
+Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
+
+int main()
+{
+    Harness::run(specification);
+}
+
+#endif // MBED_TEST_SIM_BLOCKDEVICE