gs-common: move bootctrl hal aidl implementation to gs-common

copy from device/google/zuma/interfaces/boot
  $ git log --oneline -1 interfaces/boot/
    193e5e8 zuma:interfaces:boot: add aidl interface support

Bug: 265063384
Change-Id: I6f21c4af66a8404b34bc1ab5cce108f23e1962b3
Signed-off-by: Jason Chiu <jasoncschiu@google.com>

bootctrl/aidl/Android.bp

@@ -0,0 +1,65 @@
+//
+// Copyright (C) 2023 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.
+//
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "//device/google/gs-common:device_google_gs-common_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: [
+        "//device/google/gs-common:device_google_gs-common_license",
+    ],
+}
+
+cc_defaults {
+    name: "android.hardware.boot-service_common-pixel",
+    relative_install_path: "hw",
+    defaults: ["libboot_control_defaults"],
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "libcutils",
+        "libz",
+        "libtrusty",
+        "android.hardware.boot@1.1",
+        "android.hardware.boot-V1-ndk",
+    ],
+    static_libs: [
+        "libboot_control",
+        "libbootloader_message_vendor",
+    ],
+    srcs: [
+        "BootControl.cpp",
+        "GptUtils.cpp",
+        "service.cpp"
+    ],
+}
+
+cc_binary {
+    name: "android.hardware.boot-service.default-pixel",
+    defaults: ["android.hardware.boot-service_common-pixel"],
+    init_rc: ["android.hardware.boot-service.default-pixel.rc"],
+    vendor: true,
+}
+
+cc_binary {
+    name: "android.hardware.boot-service.default_recovery-pixel",
+    defaults: ["android.hardware.boot-service_common-pixel"],
+    vintf_fragments: ["android.hardware.boot-service.default_recovery-pixel.xml"],
+    init_rc: ["android.hardware.boot-service.default_recovery-pixel.rc"],
+    recovery: true,
+}

bootctrl/aidl/BootControl.cpp

@@ -0,0 +1,538 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+
+#define LOG_TAG "bootcontrolhal"
+
+#include "BootControl.h"
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+#include <bootloader_message/bootloader_message.h>
+#include <cutils/properties.h>
+#include <libboot_control/libboot_control.h>
+#include <log/log.h>
+#include <trusty/tipc.h>
+
+#include "DevInfo.h"
+#include "GptUtils.h"
+
+using HIDLMergeStatus = ::android::bootable::BootControl::MergeStatus;
+using ndk::ScopedAStatus;
+
+using android::bootable::GetMiscVirtualAbMergeStatus;
+using android::bootable::InitMiscVirtualAbMessageIfNeeded;
+using android::bootable::SetMiscVirtualAbMergeStatus;
+
+namespace aidl::android::hardware::boot {
+
+namespace {
+
+// clang-format off
+
+#define BOOT_A_PATH     "/dev/block/by-name/boot_a"
+#define BOOT_B_PATH     "/dev/block/by-name/boot_b"
+#define DEVINFO_PATH    "/dev/block/by-name/devinfo"
+
+// slot flags
+#define AB_ATTR_PRIORITY_SHIFT      52
+#define AB_ATTR_PRIORITY_MASK       (3UL << AB_ATTR_PRIORITY_SHIFT)
+#define AB_ATTR_ACTIVE_SHIFT        54
+#define AB_ATTR_ACTIVE              (1UL << AB_ATTR_ACTIVE_SHIFT)
+#define AB_ATTR_RETRY_COUNT_SHIFT   (55)
+#define AB_ATTR_RETRY_COUNT_MASK    (7UL << AB_ATTR_RETRY_COUNT_SHIFT)
+#define AB_ATTR_SUCCESSFUL          (1UL << 58)
+#define AB_ATTR_UNBOOTABLE          (1UL << 59)
+
+#define AB_ATTR_MAX_PRIORITY        3UL
+#define AB_ATTR_MAX_RETRY_COUNT     3UL
+
+// clang-format on
+
+static std::string getDevPath(int32_t in_slot) {
+    char real_path[PATH_MAX];
+
+    const char *path = in_slot == 0 ? BOOT_A_PATH : BOOT_B_PATH;
+
+    int ret = readlink(path, real_path, sizeof real_path);
+    if (ret < 0) {
+        ALOGE("readlink failed for boot device %s\n", strerror(errno));
+        return std::string();
+    }
+
+    std::string dp(real_path);
+    // extract /dev/sda.. part
+    return dp.substr(0, sizeof "/dev/block/sdX" - 1);
+}
+
+static bool isSlotFlagSet(int32_t in_slot, uint64_t flag) {
+    std::string dev_path = getDevPath(in_slot);
+    if (dev_path.empty()) {
+        ALOGI("Could not get device path for slot %d\n", in_slot);
+        return false;
+    }
+
+    GptUtils gpt(dev_path);
+    if (gpt.Load()) {
+        ALOGI("failed to load gpt data\n");
+        return false;
+    }
+
+    gpt_entry *e = gpt.GetPartitionEntry(in_slot ? "boot_b" : "boot_a");
+    if (e == nullptr) {
+        ALOGI("failed to get gpt entry\n");
+        return false;
+    }
+
+    return !!(e->attr & flag);
+}
+
+static bool setSlotFlag(int32_t in_slot, uint64_t flag) {
+    std::string dev_path = getDevPath(in_slot);
+    if (dev_path.empty()) {
+        ALOGI("Could not get device path for slot %d\n", in_slot);
+        return false;
+    }
+
+    GptUtils gpt(dev_path);
+    if (gpt.Load()) {
+        ALOGI("failed to load gpt data\n");
+        return false;
+    }
+
+    gpt_entry *e = gpt.GetPartitionEntry(in_slot ? "boot_b" : "boot_a");
+    if (e == nullptr) {
+        ALOGI("failed to get gpt entry\n");
+        return false;
+    }
+
+    e->attr |= flag;
+    gpt.Sync();
+
+    return true;
+}
+
+static bool is_devinfo_valid;
+static bool is_devinfo_initialized;
+static std::mutex devinfo_lock;
+static devinfo_t devinfo;
+
+static bool isDevInfoValid() {
+    const std::lock_guard<std::mutex> lock(devinfo_lock);
+
+    if (is_devinfo_initialized) {
+        return is_devinfo_valid;
+    }
+
+    is_devinfo_initialized = true;
+
+    ::android::base::unique_fd fd(open(DEVINFO_PATH, O_RDONLY));
+    ::android::base::ReadFully(fd, &devinfo, sizeof devinfo);
+
+    if (devinfo.magic != DEVINFO_MAGIC) {
+        return is_devinfo_valid;
+    }
+
+    uint32_t version = ((uint32_t)devinfo.ver_major << 16) | devinfo.ver_minor;
+    // only version 3.3+ supports A/B data
+    if (version >= 0x0003'0003) {
+        is_devinfo_valid = true;
+    }
+
+    return is_devinfo_valid;
+}
+
+static bool DevInfoSync() {
+    if (!isDevInfoValid()) {
+        return false;
+    }
+
+    ::android::base::unique_fd fd(open(DEVINFO_PATH, O_WRONLY | O_DSYNC));
+    return ::android::base::WriteFully(fd, &devinfo, sizeof devinfo);
+}
+
+static void DevInfoInitSlot(devinfo_ab_slot_data_t &slot_data) {
+    slot_data.retry_count = AB_ATTR_MAX_RETRY_COUNT;
+    slot_data.unbootable = 0;
+    slot_data.successful = 0;
+    slot_data.active = 1;
+    slot_data.fastboot_ok = 0;
+}
+
+static int blow_otp_AR(bool secure) {
+    static const char *dev_name = "/dev/trusty-ipc-dev0";
+    static const char *otp_name = "com.android.trusty.otp_manager.tidl";
+    int fd = 1, ret = 0;
+    uint32_t cmd = secure? OTP_CMD_write_antirbk_secure_ap : OTP_CMD_write_antirbk_non_secure_ap;
+    fd = tipc_connect(dev_name, otp_name);
+    if (fd < 0) {
+        ALOGI("Failed to connect to OTP_MGR ns TA - is it missing?\n");
+        ret = -1;
+        return ret;
+    }
+
+    struct otp_mgr_req_base req = {
+        .command = cmd,
+        .resp_payload_size = 0,
+    };
+    struct iovec iov[] = {
+        {
+            .iov_base = &req,
+            .iov_len = sizeof(req),
+        },
+    };
+
+    size_t rc = tipc_send(fd, iov, 1, NULL, 0);
+    if (rc != sizeof(req)) {
+        ALOGI("Send fail! %zx\n", rc);
+        return rc;
+    }
+
+    struct otp_mgr_rsp_base resp;
+    rc = read(fd, &resp, sizeof(resp));
+    if (rc < 0) {
+        ALOGI("Read fail! %zx\n", rc);
+        return rc;
+    }
+
+    if (rc < sizeof(resp)) {
+        ALOGI("Not enough data! %zx\n", rc);
+        return -EIO;
+    }
+
+    if (resp.command != (cmd | OTP_RESP_BIT)) {
+        ALOGI("Wrong command! %x\n", resp.command);
+        return -EINVAL;
+    }
+
+    if (resp.result != 0) {
+        fprintf(stderr, "AR writing error! %x\n", resp.result);
+        return -EINVAL;
+    }
+
+    tipc_close(fd);
+    return 0;
+}
+
+static bool blowAR() {
+    int ret = blow_otp_AR(true);
+    if (ret) {
+        ALOGI("Blow secure anti-rollback OTP failed");
+        return false;
+    }
+
+    ret = blow_otp_AR(false);
+    if (ret) {
+        ALOGI("Blow non-secure anti-rollback OTP failed");
+        return false;
+    }
+
+    return true;
+}
+
+static constexpr MergeStatus ToAIDLMergeStatus(HIDLMergeStatus status) {
+    switch (status) {
+        case HIDLMergeStatus::NONE:
+            return MergeStatus::NONE;
+        case HIDLMergeStatus::UNKNOWN:
+            return MergeStatus::UNKNOWN;
+        case HIDLMergeStatus::SNAPSHOTTED:
+            return MergeStatus::SNAPSHOTTED;
+        case HIDLMergeStatus::MERGING:
+            return MergeStatus::MERGING;
+        case HIDLMergeStatus::CANCELLED:
+            return MergeStatus::CANCELLED;
+    }
+}
+
+static constexpr HIDLMergeStatus ToHIDLMergeStatus(MergeStatus status) {
+    switch (status) {
+        case MergeStatus::NONE:
+            return HIDLMergeStatus::NONE;
+        case MergeStatus::UNKNOWN:
+            return HIDLMergeStatus::UNKNOWN;
+        case MergeStatus::SNAPSHOTTED:
+            return HIDLMergeStatus::SNAPSHOTTED;
+        case MergeStatus::MERGING:
+            return HIDLMergeStatus::MERGING;
+        case MergeStatus::CANCELLED:
+            return HIDLMergeStatus::CANCELLED;
+    }
+}
+
+}  // namespace
+
+BootControl::BootControl() {
+    CHECK(InitMiscVirtualAbMessageIfNeeded());
+}
+
+ScopedAStatus BootControl::getActiveBootSlot(int32_t* _aidl_return) {
+    int32_t slots = 0;
+    getNumberSlots(&slots);
+    if (slots == 0) {
+        *_aidl_return = 0;
+        return ScopedAStatus::ok();
+    }
+
+    if (isDevInfoValid()) {
+        *_aidl_return = devinfo.ab_data.slots[1].active ? 1 : 0;
+        return ScopedAStatus::ok();
+    }
+    *_aidl_return = isSlotFlagSet(1, AB_ATTR_ACTIVE) ? 1 : 0;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::getCurrentSlot(int32_t* _aidl_return) {
+    char suffix[PROPERTY_VALUE_MAX];
+    property_get("ro.boot.slot_suffix", suffix, "_a");
+    *_aidl_return = std::string(suffix) == "_b" ? 1 : 0;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::getNumberSlots(int32_t* _aidl_return) {
+    int32_t slots = 0;
+
+    if (access(BOOT_A_PATH, F_OK) == 0)
+        slots++;
+
+    if (access(BOOT_B_PATH, F_OK) == 0)
+        slots++;
+
+    *_aidl_return = slots;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::getSnapshotMergeStatus(MergeStatus* _aidl_return) {
+    HIDLMergeStatus status;
+    int32_t current_slot = 0;
+    getCurrentSlot(&current_slot);
+    if (!GetMiscVirtualAbMergeStatus(current_slot, &status)) {
+        *_aidl_return = MergeStatus::UNKNOWN;
+        return ScopedAStatus::ok();
+    }
+    *_aidl_return = ToAIDLMergeStatus(status);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::getSuffix(int32_t in_slot, std::string* _aidl_return) {
+    *_aidl_return = in_slot == 0 ? "_a" : in_slot == 1 ? "_b" : "";
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::isSlotBootable(int32_t in_slot, bool* _aidl_return) {
+    int32_t slots = 0;
+    getNumberSlots(&slots);
+    if (slots == 0) {
+        *_aidl_return = false;
+        return ScopedAStatus::ok();
+    }
+    if (in_slot >= slots)
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                INVALID_SLOT, (std::string("Invalid slot ") + std::to_string(in_slot)).c_str());
+
+    bool unbootable;
+    if (isDevInfoValid()) {
+        auto &slot_data = devinfo.ab_data.slots[in_slot];
+        unbootable = !!slot_data.unbootable;
+    } else {
+        unbootable = isSlotFlagSet(in_slot, AB_ATTR_UNBOOTABLE);
+    }
+
+    *_aidl_return = unbootable ? false: true;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::isSlotMarkedSuccessful(int32_t in_slot, bool* _aidl_return) {
+    int32_t slots = 0;
+    getNumberSlots(&slots);
+    if (slots == 0) {
+        // just return true so that we don't we another call trying to mark it as successful
+        // when there is no slots
+        *_aidl_return = true;
+        return ScopedAStatus::ok();
+    }
+    if (in_slot >= slots)
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                INVALID_SLOT, (std::string("Invalid slot ") + std::to_string(in_slot)).c_str());
+
+    bool successful;
+    if (isDevInfoValid()) {
+        auto &slot_data = devinfo.ab_data.slots[in_slot];
+        successful = !!slot_data.successful;
+    } else {
+        successful = isSlotFlagSet(in_slot, AB_ATTR_SUCCESSFUL);
+    }
+
+    *_aidl_return = successful ? true : false;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::markBootSuccessful() {
+    int32_t slots = 0;
+    getNumberSlots(&slots);
+    if (slots == 0) {
+        // no slots, just return true otherwise Android keeps trying
+        return ScopedAStatus::ok();
+    }
+
+    bool ret;
+    int32_t current_slot = 0;
+    getCurrentSlot(&current_slot);
+    if (isDevInfoValid()) {
+        auto const slot = current_slot;
+        devinfo.ab_data.slots[slot].successful = 1;
+        ret = DevInfoSync();
+    } else {
+        ret = setSlotFlag(current_slot, AB_ATTR_SUCCESSFUL);
+    }
+
+    if (!ret) {
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(COMMAND_FAILED,
+                                                                  "Failed to set successful flag");
+    }
+
+    if (!blowAR()) {
+        ALOGE("Failed to blow anti-rollback counter");
+        // Ignore the error, since ABL will re-trigger it on reboot
+    }
+
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::setActiveBootSlot(int32_t in_slot) {
+    if (in_slot >= 2) {
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                INVALID_SLOT, (std::string("Invalid slot ") + std::to_string(in_slot)).c_str());
+    }
+
+    if (isDevInfoValid()) {
+        auto &active_slot_data = devinfo.ab_data.slots[in_slot];
+        auto &inactive_slot_data = devinfo.ab_data.slots[!in_slot];
+
+        inactive_slot_data.active = 0;
+        DevInfoInitSlot(active_slot_data);
+
+        if (!DevInfoSync()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "Could not update DevInfo data");
+        }
+    } else {
+        std::string dev_path = getDevPath(in_slot);
+        if (dev_path.empty()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "Could not get device path for slot");
+        }
+
+        GptUtils gpt(dev_path);
+        if (gpt.Load()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(COMMAND_FAILED,
+                                                                      "failed to load gpt data");
+        }
+
+        gpt_entry *active_entry = gpt.GetPartitionEntry(in_slot == 0 ? "boot_a" : "boot_b");
+        gpt_entry *inactive_entry = gpt.GetPartitionEntry(in_slot == 0 ? "boot_b" : "boot_a");
+        if (active_entry == nullptr || inactive_entry == nullptr) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "failed to get entries for boot partitions");
+        }
+
+        ALOGV("slot active attributes %lx\n", active_entry->attr);
+        ALOGV("slot inactive attributes %lx\n", inactive_entry->attr);
+
+        // update attributes for active and inactive
+        inactive_entry->attr &= ~AB_ATTR_ACTIVE;
+        active_entry->attr = AB_ATTR_ACTIVE | (AB_ATTR_MAX_PRIORITY << AB_ATTR_PRIORITY_SHIFT) |
+                             (AB_ATTR_MAX_RETRY_COUNT << AB_ATTR_RETRY_COUNT_SHIFT);
+    }
+
+    char boot_dev[PROPERTY_VALUE_MAX];
+    property_get("ro.boot.bootdevice", boot_dev, "");
+    if (boot_dev[0] == '\0') {
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                COMMAND_FAILED, "invalid ro.boot.bootdevice prop");
+    }
+
+    std::string boot_lun_path =
+            std::string("/sys/devices/platform/") + boot_dev + "/pixel/boot_lun_enabled";
+    int fd = open(boot_lun_path.c_str(), O_RDWR | O_DSYNC);
+    if (fd < 0) {
+        // Try old path for kernels < 5.4
+        // TODO: remove once kernel 4.19 support is deprecated
+        std::string boot_lun_path =
+                std::string("/sys/devices/platform/") + boot_dev + "/attributes/boot_lun_enabled";
+        fd = open(boot_lun_path.c_str(), O_RDWR | O_DSYNC);
+        if (fd < 0) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "failed to open ufs attr boot_lun_enabled");
+        }
+    }
+
+    //
+    // bBootLunEn
+    // 0x1  => Boot LU A = enabled, Boot LU B = disable
+    // 0x2  => Boot LU A = disable, Boot LU B = enabled
+    //
+    int ret = ::android::base::WriteStringToFd(in_slot == 0 ? "1" : "2", fd);
+    close(fd);
+    if (ret < 0) {
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                COMMAND_FAILED, "faied to write boot_lun_enabled attribute");
+    }
+
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::setSlotAsUnbootable(int32_t in_slot) {
+    if (in_slot >= 2)
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                INVALID_SLOT, (std::string("Invalid slot ") + std::to_string(in_slot)).c_str());
+
+    if (isDevInfoValid()) {
+        auto &slot_data = devinfo.ab_data.slots[in_slot];
+        slot_data.unbootable = 1;
+        if (!DevInfoSync()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "Could not update DevInfo data");
+        }
+    } else {
+        std::string dev_path = getDevPath(in_slot);
+        if (dev_path.empty()) {
+            return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    COMMAND_FAILED, "Could not get device path for slot");
+        }
+
+        GptUtils gpt(dev_path);
+        gpt.Load();
+
+        gpt_entry *e = gpt.GetPartitionEntry(in_slot ? "boot_b" : "boot_a");
+        e->attr |= AB_ATTR_UNBOOTABLE;
+
+        gpt.Sync();
+    }
+
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus BootControl::setSnapshotMergeStatus(MergeStatus in_status) {
+    int32_t current_slot = 0;
+    getCurrentSlot(&current_slot);
+    if (!SetMiscVirtualAbMergeStatus(current_slot, ToHIDLMergeStatus(in_status)))
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(COMMAND_FAILED,
+                                                                  "Operation failed");
+    return ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::boot

bootctrl/aidl/BootControl.h

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2023 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 <aidl/android/hardware/boot/BnBootControl.h>
+#include <libboot_control/libboot_control.h>
+
+namespace aidl::android::hardware::boot {
+
+class BootControl final : public BnBootControl {
+  public:
+    BootControl();
+    ::ndk::ScopedAStatus getActiveBootSlot(int32_t* _aidl_return) override;
+    ::ndk::ScopedAStatus getCurrentSlot(int32_t* _aidl_return) override;
+    ::ndk::ScopedAStatus getNumberSlots(int32_t* _aidl_return) override;
+    ::ndk::ScopedAStatus getSnapshotMergeStatus(
+            ::aidl::android::hardware::boot::MergeStatus* _aidl_return) override;
+    ::ndk::ScopedAStatus getSuffix(int32_t in_slot, std::string* _aidl_return) override;
+    ::ndk::ScopedAStatus isSlotBootable(int32_t in_slot, bool* _aidl_return) override;
+    ::ndk::ScopedAStatus isSlotMarkedSuccessful(int32_t in_slot, bool* _aidl_return) override;
+    ::ndk::ScopedAStatus markBootSuccessful() override;
+    ::ndk::ScopedAStatus setActiveBootSlot(int32_t in_slot) override;
+    ::ndk::ScopedAStatus setSlotAsUnbootable(int32_t in_slot) override;
+    ::ndk::ScopedAStatus setSnapshotMergeStatus(
+            ::aidl::android::hardware::boot::MergeStatus in_status) override;
+};
+
+enum otpmgr_command : uint32_t {
+    OTP_REQ_SHIFT = 1,
+    OTP_RESP_BIT = 1,
+    OTP_CMD_write_antirbk_non_secure_ap = (7 << OTP_REQ_SHIFT),
+    OTP_CMD_write_antirbk_secure_ap = (8 << OTP_REQ_SHIFT),
+};
+
+struct otp_mgr_req_base {
+    uint32_t command;
+    uint32_t resp_payload_size;
+    uint8_t handle;
+}__packed;
+
+struct otp_mgr_rsp_base {
+    uint32_t command;
+    uint32_t resp_payload_size;
+    int result;
+}__packed;
+
+}  // namespace aidl::android::hardware::boot

bootctrl/aidl/DevInfo.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2021 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
+
+namespace aidl::android::hardware::boot {
+
+//
+// definitions taken from ABL code
+//
+
+constexpr uint32_t DEVINFO_MAGIC = 0x49564544;
+constexpr size_t DEVINFO_AB_SLOT_COUNT = 2;
+
+struct devinfo_ab_slot_data_t {
+    uint8_t retry_count;
+    uint8_t unbootable : 1;
+    uint8_t successful : 1;
+    uint8_t active : 1;
+    uint8_t fastboot_ok : 1;
+    uint8_t : 4;
+    uint8_t unused[2];
+} __attribute__((packed));
+
+typedef struct {
+    devinfo_ab_slot_data_t slots[DEVINFO_AB_SLOT_COUNT];
+} __attribute__((packed)) devinfo_ab_data_t;
+
+struct devinfo_t {
+    uint32_t magic;
+    uint16_t ver_major;
+    uint16_t ver_minor;
+    uint8_t unused[40];
+    devinfo_ab_data_t ab_data;
+    uint8_t unused1[72];  // use remaining up to complete 128 bytes
+} __attribute__((packed));
+
+static_assert(sizeof(devinfo_t) == 128, "invalid devinfo struct size");
+
+}  // namespace aidl::android::hardware::boot

bootctrl/aidl/GptUtils.cpp

@@ -0,0 +1,185 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "bootcontrolhal"
+
+#include "GptUtils.h"
+
+#include <android-base/file.h>
+#include <errno.h>
+#include <linux/fs.h>
+#include <log/log.h>
+#include <zlib.h>
+
+namespace aidl::android::hardware::boot {
+
+namespace {
+
+static int ValidateGptHeader(gpt_header *gpt) {
+    if (gpt->signature != GPT_SIGNATURE) {
+        ALOGE("invalid gpt signature 0x%lx\n", gpt->signature);
+        return -1;
+    }
+
+    if (gpt->header_size != sizeof(gpt_header)) {
+        ALOGE("invalid gpt header size %u\n", gpt->header_size);
+        return -1;
+    }
+
+    if (gpt->entry_size != sizeof(gpt_entry)) {
+        ALOGE("invalid gpt entry size %u\n", gpt->entry_size);
+        return -1;
+    }
+
+    return 0;
+}
+
+}  // namespace
+
+GptUtils::GptUtils(const std::string dev_path) : dev_path(dev_path), fd(0) {}
+
+int GptUtils::Load(void) {
+    fd = open(dev_path.c_str(), O_RDWR);
+    if (fd < 0) {
+        ALOGE("failed to open block dev %s, %d\n", dev_path.c_str(), errno);
+        return -1;
+    }
+
+    int ret = ioctl(fd, BLKSSZGET, &block_size);
+    if (ret < 0) {
+        ALOGE("failed to get block size %d\n", errno);
+        return -1;
+    }
+
+    // read primary header
+    lseek64(fd, block_size, SEEK_SET);
+    ret = read(fd, &gpt_primary, sizeof gpt_primary);
+    if (ret < 0) {
+        ALOGE("failed to read gpt primary header %d\n", errno);
+        return -1;
+    }
+
+    if (ValidateGptHeader(&gpt_primary)) {
+        ALOGE("error validating gpt header\n");
+        return -1;
+    }
+
+    // read partition entries
+    entry_array.resize(gpt_primary.entry_count);
+    uint32_t entries_size = gpt_primary.entry_size * gpt_primary.entry_count;
+    lseek64(fd, block_size * gpt_primary.start_lba, SEEK_SET);
+    ret = read(fd, entry_array.data(), entries_size);
+    if (ret < 0) {
+        ALOGE("failed to read gpt partition entries %d\n", errno);
+        return -1;
+    }
+
+    // read gpt back header
+    lseek64(fd, block_size * gpt_primary.backup_lba, SEEK_SET);
+    ret = read(fd, &gpt_backup, sizeof gpt_backup);
+    if (ret < 0) {
+        ALOGE("failed to read gpt backup header %d\n", errno);
+        return -1;
+    }
+
+    if (ValidateGptHeader(&gpt_backup)) {
+        ALOGW("error validating gpt backup\n");  // just warn about it, not fail
+    }
+
+    // Create map <partition name, gpt_entry pointer>
+    auto get_name = [](const uint16_t *efi_name) {
+        char name[37] = {};
+        for (size_t i = 0; efi_name[i] && i < sizeof name - 1; ++i) name[i] = efi_name[i];
+        return std::string(name);
+    };
+
+    for (auto const &e : entry_array) {
+        if (e.name[0] == 0)
+            break;  // stop at the first partition with no name
+        std::string s = get_name(e.name);
+        entries[s] = const_cast<gpt_entry *>(&e);
+    }
+
+    return 0;
+}
+
+gpt_entry *GptUtils::GetPartitionEntry(std::string name) {
+    return entries.find(name) != entries.end() ? entries[name] : nullptr;
+}
+
+int GptUtils::Sync(void) {
+    if (!fd)
+        return -1;
+
+    // calculate crc and check if we need to update gpt
+    gpt_primary.entries_crc32 = crc32(0, reinterpret_cast<uint8_t *>(entry_array.data()),
+                                      entry_array.size() * sizeof(gpt_entry));
+
+    // save old crc
+    uint32_t crc = gpt_primary.crc32;
+    gpt_primary.crc32 = 0;
+
+    gpt_primary.crc32 = crc32(0, reinterpret_cast<uint8_t *>(&gpt_primary), sizeof gpt_primary);
+    if (crc == gpt_primary.crc32)
+        return 0;  // nothing to do (no changes)
+
+    ALOGI("updating GPT\n");
+
+    lseek64(fd, block_size * gpt_primary.current_lba, SEEK_SET);
+    int ret = write(fd, &gpt_primary, sizeof gpt_primary);
+    if (ret < 0) {
+        ALOGE("failed to write gpt primary header %d\n", errno);
+        return -1;
+    }
+
+    lseek64(fd, block_size * gpt_primary.start_lba, SEEK_SET);
+    ret = write(fd, entry_array.data(), entry_array.size() * sizeof(gpt_entry));
+    if (ret < 0) {
+        ALOGE("failed to write gpt partition entries %d\n", errno);
+        return -1;
+    }
+
+    // update GPT backup entries and backup
+    lseek64(fd, block_size * gpt_backup.start_lba, SEEK_SET);
+    ret = write(fd, entry_array.data(), entry_array.size() * sizeof(gpt_entry));
+    if (ret < 0) {
+        ALOGE("failed to write gpt backup partition entries %d\n", errno);
+        return -1;
+    }
+
+    gpt_backup.entries_crc32 = gpt_primary.entries_crc32;
+    gpt_backup.crc32 = 0;
+    gpt_backup.crc32 = crc32(0, reinterpret_cast<uint8_t *>(&gpt_backup), sizeof gpt_backup);
+    lseek64(fd, block_size * gpt_primary.backup_lba, SEEK_SET);
+    ret = write(fd, &gpt_backup, sizeof gpt_backup);
+    if (ret < 0) {
+        ALOGE("failed to write gpt backup header %d\n", errno);
+        return -1;
+    }
+
+    fsync(fd);
+
+    return 0;
+}
+
+GptUtils::~GptUtils() {
+    if (fd) {
+        Sync();
+        close(fd);
+    }
+}
+
+}  // namespace aidl::android::hardware::boot

bootctrl/aidl/GptUtils.h

@@ -0,0 +1,71 @@
+/*
+ * 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 <map>
+#include <string>
+#include <vector>
+
+namespace aidl::android::hardware::boot {
+
+#define GPT_SIGNATURE 0x5452415020494645UL
+
+typedef struct {
+    uint8_t type_guid[16];
+    uint8_t guid[16];
+    uint64_t first_lba;
+    uint64_t last_lba;
+    uint64_t attr;
+    uint16_t name[36];
+} __attribute__((packed)) gpt_entry;
+
+typedef struct {
+    uint64_t signature;
+    uint32_t revision;
+    uint32_t header_size;
+    uint32_t crc32;
+    uint32_t reserved;
+    uint64_t current_lba;
+    uint64_t backup_lba;
+    uint64_t first_usable_lba;
+    uint64_t last_usable_lba;
+    uint8_t disk_guid[16];
+    uint64_t start_lba;
+    uint32_t entry_count;
+    uint32_t entry_size;
+    uint32_t entries_crc32;
+} __attribute__((packed)) gpt_header;
+
+class GptUtils {
+  public:
+    GptUtils(const std::string dev_path);
+    int Load(void);
+    gpt_entry *GetPartitionEntry(std::string name);
+    int Sync(void);
+    ~GptUtils();
+
+  private:
+    std::string dev_path;
+    int fd;
+    uint32_t block_size;
+    gpt_header gpt_primary;
+    gpt_header gpt_backup;
+    std::vector<gpt_entry> entry_array;
+    std::map<std::string, gpt_entry *> entries;
+};
+
+}  // namespace aidl::android::hardware::boot

bootctrl/aidl/android.hardware.boot-service.default-pixel.rc

@@ -0,0 +1,5 @@
+service vendor.boot-default /vendor/bin/hw/android.hardware.boot-service.default-pixel
+    class early_hal
+    user root
+    group root drmrpc
+

bootctrl/aidl/android.hardware.boot-service.default_recovery-pixel.rc

@@ -0,0 +1,7 @@
+service vendor.boot-default /system/bin/hw/android.hardware.boot-service.default_recovery-pixel
+    class early_hal
+    user root
+    group root
+    seclabel u:r:hal_bootctl_default:s0
+    interface aidl android.hardware.boot.IBootControl/default
+

bootctrl/aidl/android.hardware.boot-service.default_recovery-pixel.xml

@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.boot</name>
+        <fqname>IBootControl/default</fqname>
+    </hal>
+</manifest>

bootctrl/aidl/service.cpp

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2023 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.
+ */
+
+#define LOG_TAG "aidl.android.hardware.boot-service.default"
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "BootControl.h"
+
+using aidl::android::hardware::boot::BootControl;
+using aidl::android::hardware::boot::IBootControl;
+using ::android::hardware::configureRpcThreadpool;
+using ::android::hardware::joinRpcThreadpool;
+
+int main(int, char* argv[]) {
+    android::base::InitLogging(argv, android::base::KernelLogger);
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    std::shared_ptr<IBootControl> service = ndk::SharedRefBase::make<BootControl>();
+
+    const std::string instance = std::string(BootControl::descriptor) + "/default";
+    auto status = AServiceManager_addService(service->asBinder().get(), instance.c_str());
+    CHECK_EQ(status, STATUS_OK) << "Failed to add service " << instance << " " << status;
+    LOG(INFO) << "IBootControl AIDL service running...";
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reach
+}