tc0: Add headless device profileTC0-2020.08.14

Headless profile is a nano (minimal) version of android containing
a reduced version of android runtime providing the bare minimum
for running simple Java programs with ART. This profile is also
without display rendering. It has support for different packages
including adb and fastboot.

As a result of all of these changes when compared to display rendering,
this device profile completes boot faster.

Change-Id: Idcab0605fb6290d3780e54d46cc76bfc62f913d5
Signed-off-by: Usama Arif <usama.arif@arm.com>

6 files changed, 296 insertions, 0 deletions

diff --git a/tc0/nano_art_minimal.mk b/tc0/nano_art_minimal.mk
new file mode 100644
index 0000000..291f546
--- /dev/null
+++ b/tc0/nano_art_minimal.mk
@@ -0,0 +1,44 @@
+#
+# Copyright (C) 2017 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.
+#
+
+include $(LOCAL_PATH)/version.mk
+
+# A drastically stripped down version of build/target/product/runtime_libart.mk,
+# providing the bare minimum for running simple Java programs with ART.
+
+ifeq ($(call arm-platform-min-level, 10),)
+# Arm platform support level < 10
+
+# These packages depend on libc, libm, etc.
+# In Android-10 such libraries are prohibited to be put on /system.
+# Instead, these packages are included in com.android.runtime APEX.
+PRODUCT_PACKAGES += \
+    dex2oat \
+    dalvikvm \
+    libjavacore \
+    libopenjdk
+
+endif
+
+PRODUCT_SYSTEM_DEFAULT_PROPERTIES += \
+    dalvik.vm.image-dex2oat-Xms=64m \
+    dalvik.vm.image-dex2oat-Xmx=64m \
+    dalvik.vm.dex2oat-Xms=64m \
+    dalvik.vm.dex2oat-Xmx=512m \
+    ro.dalvik.vm.native.bridge=0 \
+    dalvik.vm.usejit=true \
+    dalvik.vm.usejitprofiles=true \
+    dalvik.vm.appimageformat=lz4
diff --git a/tc0/nano_core.mk b/tc0/nano_core.mk
new file mode 100644
index 0000000..6c3de2a
--- /dev/null
+++ b/tc0/nano_core.mk
@@ -0,0 +1,175 @@
+#
+# Copyright (C) 2017 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.
+#
+
+include $(LOCAL_PATH)/version.mk
+
+# This is based on build/target/product/embedded.mk, with an even smaller
+# set of dependencies.
+
+PRODUCT_COPY_FILES += \
+    $(LOCAL_PATH)/init.common.rc:root/init.common.rc
+
+# Virtually none of the platforms can reliably generate enough entropy for the
+# crng pool to be always ready before some process makes a blocking getrandom()
+# call. Since we are not really concerned about the amount of entropy provided
+# by getrandom(), let's always include the crng_init service to initialise the
+# crng pool early enough.
+PRODUCT_PACKAGES += \
+    crng_init
+
+ifneq ($(call arm-platform-min-level, 10),)
+# Arm platform support level >= 10
+
+# https://source.android.com/devices/tech/ota/apex#configuring_system_to_support_apex_updates
+$(call inherit-product, $(SRC_TARGET_DIR)/product/updatable_apex.mk)
+
+# https://source.android.com/devices/tech/ota/dynamic_partitions/implement
+# https://source.android.com/devices/tech/ota/dynamic_partitions/implement#adb-remount
+PRODUCT_USE_DYNAMIC_PARTITIONS := false
+
+endif
+# bionic
+PRODUCT_PACKAGES += \
+    libstdc++ \
+    linker
+
+# system/core
+PRODUCT_PACKAGES += \
+    adbd \
+    crash_dump \
+    debuggerd \
+    grep \
+    init \
+    init.rc \
+    init.environ.rc \
+    ld.config.txt \
+    logcat \
+    logd \
+    logwrapper \
+    reboot \
+    run-as \
+    tombstoned \
+    toolbox
+
+# system/extras
+PRODUCT_PACKAGES += \
+    su \
+    simpleperf
+
+# frameworks/native
+PRODUCT_PACKAGES += \
+    servicemanager \
+    libbinder
+
+# external
+PRODUCT_PACKAGES += \
+    ip \
+    mkshrc \
+    sh \
+    strace \
+    toybox
+
+# prebuilts
+PRODUCT_PACKAGES += \
+    gdbserver64
+
+# SELinux packages
+PRODUCT_PACKAGES += \
+    nonplat_mac_permissions.xml \
+    nonplat_property_contexts \
+    nonplat_seapp_contexts \
+    nonplat_service_contexts \
+    nonplat_hwservice_contexts \
+    plat_mac_permissions.xml \
+    plat_property_contexts \
+    plat_seapp_contexts \
+    plat_service_contexts \
+    plat_hwservice_contexts \
+    selinux_policy \
+    vndservice_contexts
+
+ifneq ($(call arm-platform-min-level, 10),)
+# Arm platform support level >= 10
+
+# First and second stage inits.
+PRODUCT_PACKAGES += \
+    apexd \
+    com.android.runtime \
+    init_system \
+    init_vendor \
+    cgroups.json
+
+# Bootstrap some libraries.
+# apexd starts early but /system/bin/init is dynamic.
+# https://source.android.com/devices/architecture/modular-system/runtime
+PRODUCT_PACKAGES += \
+    libc.bootstrap \
+    libm.bootstrap \
+    libdl.bootstrap
+
+# Required host packages
+PRODUCT_HOST_PACKAGES += \
+    adb \
+    fastboot
+
+else
+# Arm platform support level < 10
+
+# Required host packages
+PRODUCT_PACKAGES += \
+    adb \
+    fastboot
+
+endif
+
+# Ensure that this property is always defined so that bionic_systrace.cpp
+# can rely on it being initially set by init.
+PRODUCT_DEFAULT_PROPERTY_OVERRIDES += \
+    debug.atrace.tags.enableflags=0
+
+# We always need init.usb.rc even if the device has no USB (for adbd)
+PRODUCT_COPY_FILES += \
+    system/core/rootdir/init.usb.rc:root/init.usb.rc \
+    system/core/rootdir/init.usb.configfs.rc:root/init.usb.configfs.rc \
+    system/core/rootdir/ueventd.rc:root/ueventd.rc \
+    system/core/rootdir/etc/hosts:system/etc/hosts
+
+# Use a custom public library list, since we don't build most of the libraries
+# in the standard list.
+PRODUCT_COPY_FILES += \
+    $(LOCAL_PATH)/tc0_nano/public.libraries.android.txt:system/etc/public.libraries.txt
+
+# Set a default PRODUCT_BRAND (like in build/target/product/core_tiny.mk for
+# instance).
+PRODUCT_BRAND := nano
+
+# The default setting is to support 32-bit apps only.
+TARGET_SUPPORTS_64_BIT_APPS := true
+
+
+# Never build test modules, as they pull a huge number of dependencies.
+ANDROID_NO_TEST_CHECK := true
+# Save some time by not checking the SDK API (there is no point in doing that
+# in a nano build where the whole API is not even guaranteed to work, and this
+# step takes quite a long time as it can't be sped up by CCache).
+WITHOUT_CHECK_API := true
+
+# Use our hack in build/core/main.mk: we want to be able to build
+# userdebug/eng variants without building modules tagged as debug or eng.
+ANDROID_NO_TAGGED_MODULE := true
+
+# Don't use the precollected boot image profile for generating boot image
+PRODUCT_USE_PROFILE_FOR_BOOT_IMAGE := false
diff --git a/tc0/tc0_nano.mk b/tc0/tc0_nano.mk
new file mode 100644
index 0000000..42074ca
--- /dev/null
+++ b/tc0/tc0_nano.mk
@@ -0,0 +1,29 @@
+#
+# Copyright (C) 2020 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.
+#
+
+include $(LOCAL_PATH)/version.mk
+
+$(call inherit-product, $(LOCAL_PATH)/nano_core.mk)
+$(call inherit-product, $(LOCAL_PATH)/nano_art_minimal.mk)
+$(call inherit-product, $(LOCAL_PATH)/device.mk)
+
+PRODUCT_NAME := tc0_nano
+PRODUCT_MANUFACTURER := Arm
+PRODUCT_DEVICE := tc0_nano
+PRODUCT_MODEL := Total Compute Fast Model (Nano build)
+
+PRODUCT_COPY_FILES += \
+    $(LOCAL_PATH)/tc0_nano/init.tc0_nano.rc:root/init.tc0.rc
diff --git a/tc0/tc0_nano/BoardConfig.mk b/tc0/tc0_nano/BoardConfig.mk
new file mode 100644
index 0000000..1c5ffce
--- /dev/null
+++ b/tc0/tc0_nano/BoardConfig.mk
@@ -0,0 +1,17 @@
+#
+# 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.
+#
+
+include device/arm/tc0/BoardConfig_common.mk
diff --git a/tc0/tc0_nano/init.tc0_nano.rc b/tc0/tc0_nano/init.tc0_nano.rc
new file mode 100644
index 0000000..ae0dc96
--- /dev/null
+++ b/tc0/tc0_nano/init.tc0_nano.rc
@@ -0,0 +1,25 @@
+#
+# Copyright (C) 2020 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.
+#
+
+import /init.common.rc
+
+on boot
+    # The Android network stack is not included in Nano, so we need to
+    # configure the network manually. The configuration below is the same as
+    # would be obtained from the fast model's emulated DHCP.
+    exec u:r:shell:s0 -- /system/bin/ip address add 172.20.51.1/24 broadcast 172.20.51.255 dev eth0
+    exec u:r:shell:s0 -- /system/bin/ip route add default via 172.20.51.254
+    ifup eth0
diff --git a/tc0/tc0_nano/public.libraries.android.txt b/tc0/tc0_nano/public.libraries.android.txt
new file mode 100644
index 0000000..0654823
--- /dev/null
+++ b/tc0/tc0_nano/public.libraries.android.txt
@@ -0,0 +1,6 @@
+# See https://android.googlesource.com/platform/ndk/+/master/docs/PlatformApis.md#linker-namespaces_public-libraries-list
+libart.so
+libc.so
+libdl.so
+libm.so
+libstdc++.so