Support to build factory ramdisk image.

Bug: 5769921

With this change, to build factory_ramdisk.img, set
PRODUCT_FACTORY_RAMDISK_MODULES in your product config.
PRODUCT_FACTORY_RAMDISK_MODULES consists of
"<module_name>:<install_path>" pairs.
<install_path> is relative to the root of the factory ramdisk output.
For example:
PRODUCT_FACTORY_RAMDISK_MODULES := \
    toolbox:bin/toolbox adbd:sbin/adbd adb:bin/adb

On the other hand you can use PRODUCT_COPY_FILES to copy prebuilt files
to the factory ramdisk.
Or you can define modules that are specific for the factory ramdisk
(with LOCAL_MODULE_PATH pointing to TARGET_FACTORY_RAMDISK_OUT) and add
the module names to PRODUCT_PACKAGES.

Change-Id: I3778e3d091979261cb476628da1365f931e11f49

1 files changed, 51 insertions, 0 deletions

diff --git a/core/tasks/factory_ramdisk.mk b/core/tasks/factory_ramdisk.mk
new file mode 100644
index 0000000..c4d792c
--- /dev/null
+++ b/core/tasks/factory_ramdisk.mk
@@ -0,0 +1,51 @@
+#
+# Copyright (C) 2011 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.
+#
+
+# PRODUCT_FACTORY_RAMDISK_MODULES consists of "<module_name>:<install_path>" pairs.
+# <install_path> is relative to TARGET_FACTORY_RAMDISK_OUT.
+# For example:
+# PRODUCT_FACTORY_RAMDISK_MODULES := \
+#     toolbox:bin/toolbox adbd:sbin/adbd adb:bin/adb
+factory_ramdisk_modules := $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_FACTORY_RAMDISK_MODULES))
+ifneq (,$(factory_ramdisk_modules))
+INTERNAL_FACTORY_RAMDISK_EXTRA_MODULES_FILES :=
+$(foreach m, $(factory_ramdisk_modules), \
+    $(eval _fr_m_name := $(call word-colon,1,$(m))) \
+    $(eval _fr_dest := $(call word-colon,2,$(m))) \
+    $(eval _fr_m_built := $(filter $(PRODUCT_OUT)/%, $(ALL_MODULES.$(_fr_m_name).BUILT))) \
+    $(if $(_fr_m_built), \
+        $(eval _fulldest := $(TARGET_FACTORY_RAMDISK_OUT)/$(_fr_dest)) \
+        $(eval $(call copy-one-file,$(_fr_m_built),$(_fulldest))) \
+        $(eval INTERNAL_FACTORY_RAMDISK_EXTRA_MODULES_FILES += $(_fulldest)), \
+        $(error Error: module "$(m)" in PRODUCT_FACTORY_RAMDISK_MODULES is not a target module!) \
+    ))
+endif
+
+# Files may also be installed via PRODUCT_COPY_FILES, PRODUCT_PACKAGES etc.
+INTERNAL_FACTORY_RAMDISK_FILES := $(filter $(TARGET_FACTORY_RAMDISK_OUT)/%, \
+    $(ALL_DEFAULT_INSTALLED_MODULES))
+
+ifneq (,$(INTERNAL_FACTORY_RAMDISK_EXTRA_MODULES_FILES)$(INTERNAL_FACTORY_RAMDISK_FILES))
+
+BUILT_FACTORY_RAMDISK_TARGET := $(PRODUCT_OUT)/factory_ramdisk.img
+
+INSTALLED_FACTORY_RAMDISK_TARGET := $(BUILT_FACTORY_RAMDISK_TARGET)
+$(INSTALLED_FACTORY_RAMDISK_TARGET) : $(MKBOOTFS) \
+    $(INTERNAL_FACTORY_RAMDISK_EXTRA_MODULES_FILES) $(INTERNAL_FACTORY_RAMDISK_FILES) | $(MINIGZIP)
+	$(call pretty,"Target factory ram disk: $@")
+	$(hide) $(MKBOOTFS) $(TARGET_FACTORY_RAMDISK_OUT) | $(MINIGZIP) > $@
+
+endif