commit 6bd3b1a7f1e90e7ccab4ea89f5d520570497c79d
author Tianjie <xunchang@google.com> Fri Oct 16 18:53:47 2020 -0700
committer Hongguang Chen <hgchen@google.com> Tue Oct 20 15:17:33 2020 -0700
tree 92c96d7a0f447c8365970c9613fa894a77afc6e0
parent ec952237e2dd9901a84364355d469fb3d3165dba

Generate partial ota update package if the board defines it

Many partners have asked for platform support of system-only update.
So we config cuttlefish as an example to support the partial ota
updates. Also make such package available on the build server.
This allows continuous test to ensure the e2e update flow is working.

Bug: 170921953
Test: generate & apply a partial update, check output in presubmit
Change-Id: I79d0abeb1b2be18e6ff88f0455b6de6540a37794

core/Makefile

diff --git a/core/Makefile b/core/Makefile
index af49228..ef9ca28 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -4831,7 +4831,7 @@
 # $(1): output file
 # $(2): additional args
 define build-ota-package-target
-PATH=$(INTERNAL_USERIMAGES_BINARY_PATHS):$$PATH \
+PATH=$(INTERNAL_USERIMAGES_BINARY_PATHS):$(dir $(ZIP2ZIP)):$$PATH \
     $(OTA_FROM_TARGET_FILES) \
         --verbose \
         --extracted_input_target_files $(patsubst %.zip,%,$(BUILT_TARGET_FILES_PACKAGE)) \
@@ -4841,11 +4841,11 @@
         $(BUILT_TARGET_FILES_PACKAGE) $(1)
 endef
 
-name := $(TARGET_PRODUCT)
+product_name := $(TARGET_PRODUCT)
 ifeq ($(TARGET_BUILD_TYPE),debug)
-  name := $(name)_debug
+  product_name := $(product_name)_debug
 endif
-name := $(name)-ota-$(FILE_NAME_TAG)
+name := $(product_name)-ota-$(FILE_NAME_TAG)
 
 INTERNAL_OTA_PACKAGE_TARGET := $(PRODUCT_OUT)/$(name).zip
 INTERNAL_OTA_METADATA := $(PRODUCT_OUT)/ota_metadata
@@ -4860,11 +4860,7 @@
 otapackage: $(INTERNAL_OTA_PACKAGE_TARGET)
 
 ifeq ($(BOARD_BUILD_RETROFIT_DYNAMIC_PARTITIONS_OTA_PACKAGE),true)
-name := $(TARGET_PRODUCT)
-ifeq ($(TARGET_BUILD_TYPE),debug)
-  name := $(name)_debug
-endif
-name := $(name)-ota-retrofit-$(FILE_NAME_TAG)
+name := $(product_name)-ota-retrofit-$(FILE_NAME_TAG)
 
 INTERNAL_OTA_RETROFIT_DYNAMIC_PARTITIONS_PACKAGE_TARGET := $(PRODUCT_OUT)/$(name).zip
 $(INTERNAL_OTA_RETROFIT_DYNAMIC_PARTITIONS_PACKAGE_TARGET): KEY_CERT_PAIR := $(DEFAULT_KEY_CERT_PAIR)
@@ -4881,6 +4877,20 @@
 
 endif # BOARD_BUILD_RETROFIT_DYNAMIC_PARTITIONS_OTA_PACKAGE
 
+ifneq ($(BOARD_PARTIAL_OTA_UPDATE_PARTITIONS_LIST),)
+name := $(product_name)-partial-ota-$(FILE_NAME_TAG)
+
+INTERNAL_OTA_PARTIAL_PACKAGE_TARGET := $(PRODUCT_OUT)/$(name).zip
+$(INTERNAL_OTA_PARTIAL_PACKAGE_TARGET): KEY_CERT_PAIR := $(DEFAULT_KEY_CERT_PAIR)
+$(INTERNAL_OTA_PARTIAL_PACKAGE_TARGET): $(BUILT_TARGET_FILES_PACKAGE) $(OTA_FROM_TARGET_FILES) $(INTERNAL_OTATOOLS_FILES)
+	@echo "Package partial OTA: $@"
+	$(call build-ota-package-target,$@,-k $(KEY_CERT_PAIR) --partial "$(BOARD_PARTIAL_OTA_UPDATE_PARTITIONS_LIST)")
+
+.PHONY: partialotapackage
+partialotapackage: $(INTERNAL_OTA_PARTIAL_PACKAGE_TARGET)
+
+endif # BOARD_PARTIAL_OTA_UPDATE_PARTITIONS_LIST
+
 endif    # build_ota_package
 
 # -----------------------------------------------------------------