[HarmonyOS] 带你熟悉鸿蒙轻内核Kconfig使用指南

摘要：本文介绍了Kconfig的基础知识，和鸿蒙轻内核的图形化配置及进阶的使用方法。

make menuconfig args="--help"

ifeq ($(TEE:1=y),y)
tee = _tee
endif
ifeq ($(RELEASE:1=y),y)
CONFIG ?= $(PRODUCT_PATH)/kernel_configs/release$(tee).config
else
CONFIG ?= $(PRODUCT_PATH)/kernel_configs/debug$(tee).config
endif
KCONFIG_CONFIG ?= $(CONFIG)

update_config menuconfig:
$(HIDE)test -f "$(CONFIG)" && cp -v "$(CONFIG)" .config && menuconfig $(args) && savedefconfig --out "$(CONFIG)"

  

• 判断产品配置文件是否存在，如果存在则把配置文件复制到内核根目录并命名为.config  
  
• 展示menuconfig用户配置界面，供开发者进行内核配置  
  
• 保存最小配置到产品产品文件，可以使用make savedefconfig args="–help"查看命令的解释。
  

make update_config RELEASE=1
make update_config TEE=1

make update_config CONFIG=../../vendor/hisilicon/hispark_aries/config/release.config

  

• osource
  

  

• rsource
  

  

• orsource
  

  

• –oldconfig
  

  

• –silentoldconfig
  

  

• –olddefconfig
  

  

• –savedefconfig <file>
  

ohos_kernel ?= liteos_m
⑴  $(foreach line,$(shell hb env | sed 's/\[OHOS INFO\]/ohos/g;s/ /_/g;s/:_/=/g' || true),$(eval $(line)))
⑵  ifneq ($(ohos_kernel),liteos_m)
  $(error The selected product ($(ohos_product)) is not a liteos_m kernel type product)
  endif
⑶  ifeq ($(PRODUCT_PATH),)
  PRODUCT_PATH:=$(ohos_product_path)
  endif
  ifeq ($(DEVICE_PATH),)
  DEVICE_PATH:=$(ohos_device_path)
  endif
  ifeq ($(BOARD_COMPANY),)
  BOARD_COMPANY:=$(ohos_device_company)
  endif
  ...
⑷  export BOARD_COMPANY
  export DEVICE_PATH
  export PRODUCT_PATH
hb env的输出类似如下：
[OHOS INFO] root path: /home/zhushy/openharmony
[OHOS INFO] board: v200zr
[OHOS INFO] kernel: liteos_m
[OHOS INFO] product: iotlink_demo
[OHOS INFO] product path: /home/zhushy/openharmony/vendor/bestechnic/iotlink_demo
[OHOS INFO] device path: /home/zhushy/openharmony/device/board/fnlink/v200zr/liteos_m
[OHOS INFO] device company: fnlink

ohos_root_path=/home/zhushy/openharmony
ohos_board=v200zr
ohos_kernel=liteos_m
ohos_product=iotlink_demo
ohos_product_path=/home/zhushy/openharmony/vendor/bestechnic/iotlink_demo
ohos_device_path=/home/zhushy/openharmony/device/board/fnlink/v200zr/liteos_m
ohos_device_company=fnlink

# Device Kconfig import
⑴  osource "$(DEVICE_PATH)/Kconfig"
⑵  config SOC_COMPANY
    string "SoC company name to locate soc build path"
    help
    This option specifies the SoC company name, used to locate the build path for soc. This option is set by the
    SoC's Kconfig file, and should be exactly the same with SoC company path, and the user should generally avoid
    modifying it via the menu configuration.
⑶  orsource "../../device/board/*/Kconfig.liteos_m.shields"
⑷  orsource "../../device/board/$(BOARD_COMPANY)/Kconfig.liteos_m.defconfig.boards"
  choice
    prompt "Board Selection"
  orsource "../../device/board/$(BOARD_COMPANY)/Kconfig.liteos_m.boards"
⑸  endchoice
⑹  orsource "../../device/soc/*/Kconfig.liteos_m.defconfig"
  choice
    prompt "SoC Series Selection"
  orsource "../../device/soc/*/Kconfig.liteos_m.series"
  endchoice
⑺  orsource "../../device/soc/*/Kconfig.liteos_m.soc"

orsource "shields/Kconfig.liteos_m.shields"

⑴  orsource "*/Kconfig.liteos_m.defconfig.shield"
  choice
    prompt "shield Selection"
⑵    orsource "*/Kconfig.liteos_m.shield"
  endchoice

shields
├── BUILD.gn
├── Kconfig.liteos_m.shields
├── v200zr-evb-t0
│   ├── BUILD.gn
│   ├── Kconfig.liteos_m.defconfig.shield
│   ├── Kconfig.liteos_m.shield
└── v200zr-evb-t1
  ├── BUILD.gn
  ├── Kconfig.liteos_m.defconfig.shield
  ├── Kconfig.liteos_m.shield

orsource "*/Kconfig.liteos_m.defconfig.board"

orsource "*/Kconfig.liteos_m.board"

config BOARD_V200ZR
  bool "select board V200Z-R"
  depends on SOC_BES2600W

rsource "*/Kconfig.liteos_m.defconfig.series"
config HALS_COMMUCATION_WIFI_LITE
  bool "WIFI LITE"
  default y

rsource "*/Kconfig.liteos_m.series"