emmc_appsboot.mbn生成

(1)Device/yulong/common/generate_extra_images.mk

456 includebootable/bootloader/lk/AndroidBoot.mk

457

458 $(INSTALLED_BOOTLOADER_MODULE):$(TARGET_EMMC_BOOTLOADER)| $(ACP)

459 $(transform-prebuilt-to-target)

480 .PHONY: aboot

481 ifeq($(USESECIMAGETOOL), true)

482 aboot:gensecimage_target

483 else

484 aboot: $(INSTALLED_BOOTLOADER_MODULE)

485 endif

(2)bootable/bootloader/lk/AndroidBoot.mk

69 TARGET_EMMC_BOOTLOADER := $(PRODUCT_OUT)/emmc_appsboot.mbn

83 $(TARGET_EMMC_BOOTLOADER): emmc_appsbootldr_clean|
bootloader $(EMMC_BOOTLOADER_OUT)$(INSTALLED_KEYSTOREIMAGE_TARGET)

84 $(MAKE) -C bootable/bootloader/lk TOOLCHAIN_PREFIX=$(CROSS_COMPILE)BOOTLOADER_OUT=../../../$(EMMC_BOOTLOADER_OUT) $(BOOTLOADER_PLATFORM)EMMC_BOOT=1 $(SIGNED_KERNEL )$(VERIFIED_BOOT) $(DEVICE_STATUS) $(BUILD_VARIANT)