又來...改版了

BoardConfig.mk:

TARGET_BOOTLOADER_CONFIG := 
imx6q    : mx6qsabreautoandroid_config 
imx6dl   : mx6dlsabreautoandroid_config 
imx6solo : mx6solosabresdandroid_config 
imx6qp   : mx6qpsabreautoandroid_config

core/Makefile:

BOOTLOADER_CROSS_TOOLCHAIN := `pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-
BOOTLOADER_ENV := ARCH=arm CROSS_COMPILE=$(BOOTLOADER_CROSS_TOOLCHAIN)
HOST_PROCESSOR := $(shell cat /proc/cpuinfo | grep processor | wc -l)
TARGET_BOOTLOADER_IMAGE := $(PRODUCT_OUT)/u-boot.imx

BOOTLOADER_PATH := bootable/bootloader/uboot-imx/
BOOTLOADER_CONFIG_FILE := $(BOOTLOADER_PATH)/include/config.h

bootloader: $(TARGET_BOOTLOADER_IMAGE)

$(TARGET_BOOTLOADER_IMAGE):
        for ubootplat in $(TARGET_BOOTLOADER_CONFIG); do \
                UBOOT_PLATFORM=`echo $$ubootplat | cut -d':' -f1`; \
                UBOOT_CONFIG=`echo $$ubootplat | cut -d':' -f2`; \
        echo $(UBOOT_PLATFORM); \
        echo $(UBOOT_CONFIG); \
                $(MAKE) -C bootable/bootloader/uboot-imx/ distclean $(BOOTLOADER_ENV); \
                $(MAKE) -C bootable/bootloader/uboot-imx/ $$UBOOT_CONFIG $(BOOTLOADER_ENV); \
                $(MAKE) -C bootable/bootloader/uboot-imx/ $(BOOTLOADER_ENV); \
                install -D bootable/bootloader/uboot-imx/u-boot.imx $(PRODUCT_OUT)/u-boot-$$UBOOT_PLATFORM.imx; \
                install -D bootable/bootloader/uboot-imx/u-boot.imx $@; \
        done

所以 command 就是..

make mx6dlsabreautoandroid_config