custom_images: support verity fec (forward error correction)
Bug: 63691195
Test: `make custom_images` with CUSTOM_IMAGE_SUPPORT_VERITY_FEC := true
Test: boot device with the custom image built above
Change-Id: I198fa1e0697cb00712bbfb6f1a717ec623703ede
diff --git a/core/tasks/build_custom_images.mk b/core/tasks/build_custom_images.mk
index 0750217..c9b07da 100644
--- a/core/tasks/build_custom_images.mk
+++ b/core/tasks/build_custom_images.mk
@@ -36,6 +36,8 @@
# image. <dest> is relativ to the root of the image.
# - CUSTOM_IMAGE_SELINUX, set to "true" if the image supports selinux.
# - CUSTOM_IMAGE_SUPPORT_VERITY, set to "true" if the product supports verity.
+# - CUSTOM_IMAGE_SUPPORT_VERITY_FEC, set to "true" if the product supports
+# verity FEC (forward error correction).
# - CUSTOM_IMAGE_VERITY_BLOCK_DEVICE
# - CUSTOM_IMAGE_AVB_HASH_ENABLE, set to "true" to add AVB HASH footer.
# - CUSTOM_IMAGE_AVB_ADD_HASH_FOOTER_ARGS, additional args of AVB HASH footer.
@@ -61,6 +63,7 @@
CUSTOM_IMAGE_COPY_FILES \
CUSTOM_IMAGE_SELINUX \
CUSTOM_IMAGE_SUPPORT_VERITY \
+ CUSTOM_IMAGE_SUPPORT_VERITY_FEC \
CUSTOM_IMAGE_VERITY_BLOCK_DEVICE \
CUSTOM_IMAGE_AVB_HASH_ENABLE \
CUSTOM_IMAGE_AVB_ADD_HASH_FOOTER_ARGS \
diff --git a/core/tasks/tools/build_custom_image.mk b/core/tasks/tools/build_custom_image.mk
index ea31621..719279c 100644
--- a/core/tasks/tools/build_custom_image.mk
+++ b/core/tasks/tools/build_custom_image.mk
@@ -79,6 +79,7 @@
$(my_built_custom_image): PRIVATE_PICKUP_FILES := $(my_pickup_files)
$(my_built_custom_image): PRIVATE_SELINUX := $(CUSTOM_IMAGE_SELINUX)
$(my_built_custom_image): PRIVATE_SUPPORT_VERITY := $(CUSTOM_IMAGE_SUPPORT_VERITY)
+$(my_built_custom_image): PRIVATE_SUPPORT_VERITY_FEC := $(CUSTOM_IMAGE_SUPPORT_VERITY_FEC)
$(my_built_custom_image): PRIVATE_VERITY_KEY := $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_VERITY_SIGNING_KEY)
$(my_built_custom_image): PRIVATE_VERITY_BLOCK_DEVICE := $(CUSTOM_IMAGE_VERITY_BLOCK_DEVICE)
$(my_built_custom_image): PRIVATE_DICT_FILE := $(CUSTOM_IMAGE_DICT_FILE)
@@ -93,6 +94,9 @@
else ifneq (,$(filter true, $(CUSTOM_IMAGE_AVB_HASH_ENABLE) $(CUSTOM_IMAGE_AVB_HASHTREE_ENABLE)))
$(error Cannot set both CUSTOM_IMAGE_AVB_HASH_ENABLE and CUSTOM_IMAGE_AVB_HASHTREE_ENABLE to true)
endif
+ifeq (true,$(CUSTOM_IMAGE_SUPPORT_VERITY_FEC))
+ $(my_built_custom_image): $(FEC)
+endif
my_custom_image_modules_var:=BOARD_$(strip $(call to-upper,$(my_custom_image_name)))_KERNEL_MODULES
my_custom_image_modules:=$($(my_custom_image_modules_var))
my_custom_image_modules_dep:=$(if $(my_custom_image_modules),$(my_custom_image_modules) $(DEPMOD),)
@@ -124,6 +128,8 @@
echo "verity_key=$(PRIVATE_VERITY_KEY)" >> $(PRIVATE_INTERMEDIATES)/image_info.txt;\
echo "verity_signer_cmd=$(VERITY_SIGNER)" >> $(PRIVATE_INTERMEDIATES)/image_info.txt;\
echo "verity_block_device=$(PRIVATE_VERITY_BLOCK_DEVICE)" >> $(PRIVATE_INTERMEDIATES)/image_info.txt)
+ $(if $(PRIVATE_SUPPORT_VERITY_FEC),\
+ $(hide) echo "verity_fec=$(PRIVATE_SUPPORT_VERITY_FEC)" >> $(PRIVATE_INTERMEDIATES)/image_info.txt)
$(hide) echo "avb_avbtool=$(PRIVATE_AVB_AVBTOOL)" >> $(PRIVATE_INTERMEDIATES)/image_info.txt
$(hide) echo "avb_signing_args=$(PRIVATE_AVB_SIGNING_ARGS)" >> $(PRIVATE_INTERMEDIATES)/image_info.txt
$(if $(PRIVATE_AVB_HASH_ENABLE),\
