CMDLINE_SIZE ?= 0x400 BOOTSTUB_SIZE ?= 8192 BOOTSTUB_SRC_FILES := bootstub.c sfi.c ssp-uart.c imr_toc.c spi-uart.c BOOTSTUB_SRC_FILES_x86 := head.S e820_bios.S ifeq ($(TARGET_IS_64_BIT),true) BOOTSTUB_2ND_ARCH_VAR_PREFIX := $(TARGET_2ND_ARCH_VAR_PREFIX) else BOOTSTUB_2ND_ARCH_VAR_PREFIX := endif LOCAL_SRC_FILES := $(BOOTSTUB_SRC_FILES) LOCAL_SRC_FILES_x86 := $(BOOTSTUB_SRC_FILES_x86) ANDROID_TOOLCHAIN_FLAGS := -m32 -ffreestanding LOCAL_CFLAGS := $(ANDROID_TOOLCHAIN_FLAGS) -Wall -O1 -DCMDLINE_SIZE=${CMDLINE_SIZE} -DAOSP_HEADER_ADDRESS=$(BOOTSTUB_AOSP_HEADER_ADDRESS) $(BOOTSTUB_CFLAGS) LOCAL_ASFLAGS := -DSTACK_OFFSET=$(BOOTSTUB_STACK_OFFSET) LOCAL_C_INCLUDES = system/core/mkbootimg LOCAL_MODULE := $(BOOTSTUB_BINARY).bin LOCAL_MODULE_TAGS := optional LOCAL_MULTILIB := 32 LOCAL_MODULE_PATH := $(PRODUCT_OUT) LOCAL_MODULE_CLASS := EXECUTABLES LOCAL_FORCE_STATIC_EXECUTABLE := true LOCAL_2ND_ARCH_VAR_PREFIX := $(BOOTSTUB_2ND_ARCH_VAR_PREFIX) include $(BUILD_SYSTEM)/binary.mk $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_GLOBAL_CFLAGS := $(LOCAL_CFLAGS) $(LOCAL_BUILT_MODULE) : PRIVATE_ELF_FILE := $(intermediates)/$(PRIVATE_MODULE).elf $(LOCAL_BUILT_MODULE) : PRIVATE_LINK_SCRIPT := $(LOCAL_PATH)/2ndbootloader.lds $(LOCAL_BUILT_MODULE) : BOOTSTUB_OBJS := $(patsubst %.c, %.o , $(LOCAL_SRC_FILES)) $(LOCAL_BUILT_MODULE) : BOOTSTUB_OBJS += $(patsubst %.S, %.o , $(LOCAL_SRC_FILES_x86)) $(LOCAL_BUILT_MODULE) : BOOTSTUB_OBJS := $(addprefix $(intermediates)/, $(BOOTSTUB_OBJS)) $(LOCAL_BUILT_MODULE) : BOOTSTUB_ENTRY := $(BOOTSTUB_ENTRY) $(LOCAL_BUILT_MODULE): $(all_objects) $(hide) mkdir -p $(dir $@) @echo "Generating bootstub.bin: $@" $(hide) $(TARGET_LD) \ -m elf_i386 \ -T $(PRIVATE_LINK_SCRIPT) --defsym=BOOTSTUB_ENTRY=$(BOOTSTUB_ENTRY) \ $(BOOTSTUB_OBJS) \ -o $(PRIVATE_ELF_FILE) $(hide) $(TARGET_OBJCOPY) -O binary -R .note -R .comment -S $(PRIVATE_ELF_FILE) $@ $(LOCAL_BUILT_MODULE).size_check: $(LOCAL_BUILT_MODULE) $(hide) ACTUAL_SIZE=`$(call get-file-size,$<)`; \ if [ "$$ACTUAL_SIZE" -gt "$(BOOTSTUB_SIZE)" ]; then \ echo "$<: $$ACTUAL_SIZE exceeds size limit of $(BOOTSTUB_SIZE) bytes, aborting."; \ exit 1; \ fi $(hide) touch $@ # Then assemble the final bootstub file bootstub_full := $(PRODUCT_OUT)/$(BOOTSTUB_BINARY) $(bootstub_full) : $(LOCAL_BUILT_MODULE) $(LOCAL_BUILT_MODULE).size_check @echo "Generating bootstub: $@" $(hide) cat $< /dev/zero | dd bs=$(BOOTSTUB_SIZE) count=1 > $@