initial GKI boot.img support

The GKI boot.img should be generated alongside the GSI. To make this
possible, define a flag (TARGET_NO_VENDOR_BOOT) that can be used to
disable the generation of the vendor_boot image.

Bug: 138323550
Change-Id: I91181853b26815e68a2fa2216b68579780d034dc

core/board_config.mk

@@ -361,7 +361,9 @@ endif
 BUILDING_VENDOR_BOOT_IMAGE :=
 ifdef BOARD_BOOT_HEADER_VERSION
   ifneq ($(call math_gt_or_eq,$(BOARD_BOOT_HEADER_VERSION),3),)
-    BUILDING_VENDOR_BOOT_IMAGE := true
+    ifneq ($(TARGET_NO_VENDOR_BOOT),true)
+      BUILDING_VENDOR_BOOT_IMAGE := true
+    endif
     ifdef BUILDING_RECOVERY_IMAGE
       ifneq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
         $(error Boot header version >=3 requires recovery as boot)

target/board/generic_arm64/BoardConfig.mk

@@ -55,8 +55,16 @@ endif
 include build/make/target/board/BoardConfigGsiCommon.mk
 include build/make/target/board/BoardConfigEmuCommon.mk
 
+TARGET_NO_KERNEL := false
+TARGET_NO_VENDOR_BOOT := true
+BOARD_USES_RECOVERY_AS_BOOT := true
+
+BOARD_BOOTIMAGE_PARTITION_SIZE := 0x02000000
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800
 
+BOARD_BOOT_HEADER_VERSION := 3
+BOARD_MKBOOTIMG_ARGS += --header_version $(BOARD_BOOT_HEADER_VERSION)
+
 # Emulator system image is going to be used as GSI and some vendor still hasn't
 # cleaned up all device specific directories under root!
 

target/board/generic_arm64/device.mk

@@ -14,6 +14,16 @@
 # limitations under the License.
 #
 
+# Cuttlefish has GKI kernel prebuilts, so use those for the GKI boot.img.
+ifeq ($(TARGET_PREBUILT_KERNEL),)
+    LOCAL_KERNEL := device/google/cuttlefish_kernel/5.4-arm64/kernel
+else
+    LOCAL_KERNEL := $(TARGET_PREBUILT_KERNEL)
+endif
+
+PRODUCT_COPY_FILES += \
+    $(LOCAL_KERNEL):kernel
+
 # Adjust the Dalvik heap to be appropriate for a tablet.
 $(call inherit-product-if-exists, frameworks/base/build/tablet-dalvik-heap.mk)
 $(call inherit-product-if-exists, frameworks/native/build/tablet-dalvik-heap.mk)

target/product/aosp_arm64.mk

@@ -53,7 +53,6 @@ $(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_product.mk)
 #
 # All components inherited here go to vendor image
 #
-$(call inherit-product-if-exists, device/generic/goldfish/arm64-vendor.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/emulator_vendor.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/board/generic_arm64/device.mk)
 

target/product/sdk_phone_arm64.mk

@@ -16,6 +16,7 @@
 QEMU_USE_SYSTEM_EXT_PARTITIONS := true
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_arm64.mk)
+$(call inherit-product-if-exists, device/generic/goldfish/arm64-vendor.mk)
 
 # Define the host tools and libs that are parts of the SDK.
 $(call inherit-product, sdk/build/product_sdk.mk)