microdroid/Android.bp

package {
    default_applicable_licenses: ["Android-Apache-2.0"],
}

microdroid_shell_and_utilities = [
    "reboot",
    "sh",
    "toolbox",
    "toybox",
]

microdroid_rootdirs = [
    "dev",
    "proc",
    "sys",

    "system",
    "vendor",
    "debug_ramdisk",
    "mnt",

    "apex",
    "linkerconfig",
    "second_stage_resources",
    "postinstall",
]

microdroid_symlinks = [
    {
        target: "/sys/kernel/debug",
        name: "d",
    },
]

android_filesystem {
    name: "microdroid",
    use_avb: true,
    avb_private_key: "microdroid.pem",
    avb_algorithm: "SHA256_RSA4096",
    partition_name: "system",
    deps: [
        "init_second_stage",
        "microdroid_init_rc",
        "ueventd.rc",
        "libbinder",
        "libstdc++",
        "logcat",
        "logd",
        "run-as",
        "secilc",
        "adbd",
        "apexd",
        "debuggerd",
        "linker",
        "linkerconfig",
        "servicemanager",
        "tombstoned",
        "cgroups.json",

        "plat_sepolicy_and_mapping.sha256",
    ] + microdroid_shell_and_utilities,
    multilib: {
        common: {
            deps: [
                "com.android.runtime",
                "plat_sepolicy.cil",
                "plat_mapping_file",
                "plat_file_contexts",
                "plat_hwservice_contexts",
                "plat_property_contexts",
                "plat_service_contexts",
                "plat_keystore2_key_contexts",
            ],
        },
    },
    base_dir: "system",
    dirs: microdroid_rootdirs,
    symlinks: microdroid_symlinks,
    file_contexts: "microdroid_file_contexts",
}

prebuilt_etc {
    name: "microdroid_init_rc",
    filename: "init.rc",
    src: "init.rc",
    relative_install_path: "init/hw",
    installable: false, // avoid collision with system partition's init.rc
}

android_filesystem {
    name: "microdroid_vendor",
    use_avb: true,
    deps: [
        "microdroid_plat_sepolicy_vers.txt",
        "microdroid_precompiled_sepolicy",
        "microdroid_precompiled_sepolicy.plat_sepolicy_and_mapping.sha256",
    ],
    multilib: {
        common: {
            deps: [
                "microdroid_vendor_sepolicy.cil",
                "microdroid_plat_pub_versioned.cil",
            ],
        },
    },
    avb_private_key: "microdroid.pem",
    avb_algorithm: "SHA256_RSA4096",
    file_contexts: "microdroid_vendor_file_contexts",
}

prebuilt_etc {
    name: "microdroid_plat_sepolicy_vers.txt",
    src: "plat_sepolicy_vers.txt",
    filename: "plat_sepolicy_vers.txt",
    sub_dir: "selinux",
    installable: false,
}

logical_partition {
    name: "microdroid_super",
    sparse: true,
    // TODO(b/181107248): remove this hard-coded value
    size: "104857600",
    default_group: [
        {
            name: "system",
            filesystem: ":microdroid",
        },
        {
            name: "vendor",
            filesystem: ":microdroid_vendor",
        },
    ],
}

bootimg {
    name: "microdroid_boot-5.10",
    ramdisk_module: "microdroid_ramdisk-5.10",
    // We don't have kernel for arm and x86. But Soong demands one when it builds for
    // arm or x86 target. Satisfy that by providing an empty file as the kernel.
    kernel_prebuilt: "empty_kernel",
    arch: {
        arm64: {
            kernel_prebuilt: ":kernel_prebuilts-5.10-arm64",
        },
        x86_64: {
            kernel_prebuilt: ":kernel_prebuilts-5.10-x86_64",
        },
    },
    // TODO(jiyong): change the name to init, cause it's confusing
    cmdline: "rdinit=/bin/init_vendor " +
        "panic=-1 " +
        // TODO(b/181936135) make the ratelimiting conditional; ratelimiting on prod build
        "printk.devkmsg=on " +
        "androidboot.first_stage_console=1 " +
        "androidboot.hardware=microdroid " +
        "androidboot.boot_devices=10000.pci ",
    dtb_prebuilt: "dummy_dtb.img",
    header_version: "4",
    partition_name: "boot",
    use_avb: true,
    avb_private_key: "microdroid.pem",
}

android_filesystem {
    name: "microdroid_ramdisk-5.10",
    deps: [
        "init_first_stage_soong",
    ],
    dirs: [
        "dev",
        "proc",
        "sys",

        // TODO(jiyong): remove these
        "mnt",
        "debug_ramdisk",
        "second_stage_resources",
    ],
    type: "compressed_cpio",
}

bootimg {
    name: "microdroid_vendor_boot-5.10",
    ramdisk_module: "microdroid_vendor_ramdisk-5.10",
    dtb_prebuilt: "dummy_dtb.img",
    header_version: "4",
    vendor_boot: true,
    partition_name: "vendor_boot",
    use_avb: true,
    avb_private_key: "microdroid.pem",
}

android_filesystem {
    name: "microdroid_vendor_ramdisk-5.10",
    arch: {
        arm64: {
            deps: ["virt_device_prebuilts_kernel_modules-5.10-arm64"],
        },
        x86_64: {
            deps: ["virt_device_prebuilts_kernel_modules-5.10-x86_64"],
        },
    },
    deps: [
        "microdroid_fstab",
    ],
    base_dir: "first_stage_ramdisk",
    type: "compressed_cpio",
    symlinks: [
        {
            target: "etc/fstab",
            name: "first_stage_ramdisk/fstab.microdroid",
        },
        {
            target: "first_stage_ramdisk/lib",
            name: "lib",
        },
    ],
}

prebuilt_etc {
    name: "microdroid_fstab",
    src: "fstab",
    filename: "fstab",
    installable: false,
}

prebuilt_etc {
    name: "microdroid_uboot_env",
    src: ":microdroid_uboot_env_gen",
    filename: "uboot_env.img",
}

genrule {
    name: "microdroid_uboot_env_gen",
    tools: ["mkenvimage_host"],
    srcs: ["uboot-env.txt"],
    out: ["output.img"],
    cmd: "$(location mkenvimage_host) -s 4096 -o $(out) $(in)",
}

// sepolicy sha256 for vendor
prebuilt_etc {
    name: "microdroid_precompiled_sepolicy.plat_sepolicy_and_mapping.sha256",
    src: ":plat_sepolicy_and_mapping.sha256_gen",
    filename: "precompiled_sepolicy.plat_sepolicy_and_mapping.sha256",
    relative_install_path: "selinux",
    installable: false,
}

genrule {
    name: "microdroid_precompiled_sepolicy_gen",
    tools: ["secilc"],
    srcs: [
        ":plat_sepolicy.cil",
        ":plat_mapping_file",
        ":microdroid_plat_pub_versioned.cil",
        ":microdroid_vendor_sepolicy.cil",
    ],
    out: ["precompiled_sepolicy"],
    cmd: "$(location secilc) -m -M true -G -c 30 $(in) -o $(out) -f /dev/null",
}

prebuilt_etc {
    name: "microdroid_precompiled_sepolicy",
    src: ":microdroid_precompiled_sepolicy_gen",
    filename: "precompiled_sepolicy",
    relative_install_path: "selinux",
    installable: false,
}

vbmeta {
    name: "microdroid_vbmeta",
    partition_name: "vbmeta",
    private_key: "microdroid.pem",
    partitions: [
        "microdroid_vendor",
        "microdroid_vendor_boot-5.10",
    ],
    chained_partitions: [
        {
            name: "vbmeta_system",
            rollback_index_location: 1,
            private_key: "microdroid.pem",
        },
        {
            name: "boot",
            rollback_index_location: 2,
            private_key: "microdroid.pem",
        },
    ],
}

vbmeta {
    name: "microdroid_vbmeta_system",
    partition_name: "vbmeta_system",
    private_key: "microdroid.pem",
    partitions: [
        "microdroid",
    ],
}