bootloader.mk

#
# Copyright 2016 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.

ifeq ($(BOOTLOADER_USE_PREBUILT),false)
# Rules to create bootloader zip file, a precursor to the bootloader
# image that is stored in the target-files-package. There's also
# metadata file which indicates how large to make the VFAT filesystem
# image

ifeq ($(TARGET_UEFI_ARCH),i386)
efi_default_name := bootia32.efi
LOADER_TYPE := linux-x86
else
efi_default_name := bootx64.efi
LOADER_TYPE := linux-x86_64
endif

# (pulled from build/core/Makefile as this gets defined much later)
# Pick a reasonable string to use to identify files.
ifneq "" "$(filter eng.%,$(BUILD_NUMBER))"
# BUILD_NUMBER has a timestamp in it, which means that
# it will change every time.  Pick a stable value.
FILE_NAME_TAG := eng.$(USER)
else
FILE_NAME_TAG := $(BUILD_NUMBER)
endif

kernelflinger := $(PRODUCT_OUT)/efi/kernelflinger.efi

BOARD_FIRST_STAGE_LOADER := $(kernelflinger)
USERFASTBOOT_2NDBOOTLOADER :=

intermediates := $(call intermediates-dir-for,PACKAGING,bootloader_zip)
bootloader_zip := $(intermediates)/bootloader.zip
$(bootloader_zip): intermediates := $(intermediates)
$(bootloader_zip): efi_root := $(intermediates)/root
$(bootloader_zip): \
		$(TARGET_DEVICE_DIR)/AndroidBoard.mk \
		$(BOARD_FIRST_STAGE_LOADER) \
		| $(ACP)

	$(hide) rm -rf $(efi_root)
	$(hide) rm -f $@
	$(hide) mkdir -p $(efi_root)/EFI/BOOT
	$(hide) $(ACP) $(BOARD_FIRST_STAGE_LOADER) $(efi_root)/loader.efi
	$(hide) $(ACP) $(BOARD_FIRST_STAGE_LOADER) $(efi_root)/EFI/BOOT/$(efi_default_name)
	$(hide) echo "Brillo=\\EFI\\BOOT\\$(efi_default_name)" > $(efi_root)/manifest.txt
	$(hide) (cd $(efi_root) && zip -qry ../$(notdir $@) .)

bootloader_metadata := $(intermediates)/bootloader-size.txt
$(bootloader_metadata):
	$(hide) mkdir -p $(dir $@)
	$(hide) echo $(BOARD_BOOTLOADER_PARTITION_SIZE) > $@

INSTALLED_RADIOIMAGE_TARGET += $(bootloader_zip) $(bootloader_metadata)

# Rule to create $(OUT)/bootloader image, binaries within are signed with
# testing keys

BOOTLOADER_FROM_ZIP := vendor/bsp/intel/kernelflinger/build/bootloader_from_zip

bootloader_bin := $(PRODUCT_OUT)/bootloader
$(bootloader_bin): \
		$(bootloader_zip) \
		$(IMG2SIMG) \
		$(BOOTLOADER_ADDITIONAL_DEPS) \
		$(BOOTLOADER_FROM_ZIP)

	$(hide) $(BOOTLOADER_FROM_ZIP) \
		--size $(BOARD_BOOTLOADER_PARTITION_SIZE) \
		$(BOOTLOADER_ADDITIONAL_ARGS) \
		--zipfile $(bootloader_zip) \
		$@

droidcore: $(bootloader_bin)

.PHONY: bootloader
bootloader: $(bootloader_bin)
$(call dist-for-goals,droidcore,$(bootloader_bin):$(TARGET_PRODUCT)-bootloader-$(FILE_NAME_TAG))

fastboot_usb_bin := $(PRODUCT_OUT)/fastboot-usb.img
$(fastboot_usb_bin): \
		$(bootloader_zip) \
		$(BOOTLOADER_ADDITIONAL_DEPS) \
		$(BOOTLOADER_FROM_ZIP)

	$(hide) $(BOOTLOADER_FROM_ZIP) \
		$(BOOTLOADER_ADDITIONAL_ARGS) \
		--zipfile $(bootloader_zip) \
		--extra-size 10485760 \
		--bootable \
		$@

# Build when 'make' is run with no args
droidcore: $(fastboot_usb_bin)

.PHONY: userfastboot-usb
userfastboot-usb: $(fastboot_usb_bin)

$(call dist-for-goals,droidcore,$(fastboot_usb_bin):$(TARGET_PRODUCT)-fastboot-usb-$(FILE_NAME_TAG).img)

# for userfastboot, we need the userfastboot image in the bootloader partition.
INSTALLED_RADIOIMAGE_TARGET += $(PRODUCT_OUT)/fastboot.img
endif