Implement IBootControl 1.1.

Store the new state for IBootControl 1.1 in the misc partition, using
the reserved section of bootloader_message_ab. The code to read/write
this partition is from the bootloader_message library.

We don't embed libboot_control directly because the 1.0 HAL methods are
implemented using GPT, not misc. Note that the new 1.1 methods are
implemented in a shared file. This is for future implementations of the
HAL that may not rely on the legacy GPT library, but will use the same
misc storage.

Bug: 141131816
Test: vts
Change-Id: I455c202cdd6a21261a2ed1f17dec6efd2ae8116e

1 files changed, 47 insertions, 0 deletions

diff --git a/bootctrl/BootControlShared.h b/bootctrl/BootControlShared.h
new file mode 100644
index 0000000..2f7a6a0
--- /dev/null
+++ b/bootctrl/BootControlShared.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 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.
+ */
+
+#pragma once
+
+#include <android/hardware/boot/1.1/IBootControl.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace boot {
+namespace V1_1 {
+namespace implementation {
+
+using ::android::hardware::Return;
+
+struct BootControlShared : public IBootControl {
+    BootControlShared();
+
+    Return<bool> setSnapshotMergeStatus(MergeStatus status) override;
+    Return<MergeStatus> getSnapshotMergeStatus() override;
+
+  protected:
+    std::string misc_device_;
+};
+
+extern "C" IBootControl *HIDL_FETCH_IBootControl(const char *name);
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace boot
+}  // namespace hardware
+}  // namespace android