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