更新 yocto 上的自定义设备树

Question

我正在使用 sama5d27-wlsom1-ek 板进行演示，并且正在尝试对设备树进行更改。

到目前为止，我已经编译了 core-image-minimal 并发现我的 dtb 文件是在

中生成的

/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/build/arch/arm/boot/dts

文件夹。

我还发现了很多不同的 dts 文件

build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/arch/arm/boot/dts

但是，如果设备树文件是在 build 文件夹中生成的，并且如果我使用自定义 dts 文件，我该如何更新它们？

我想使用我的 custom.dts 文件构建映像，在该文件中启用某些外围设备并禁用不需要的外围设备。 （未来定制 dtb 的测试）。

我尝试了这里找到的不同方法 How to use an own device tree and modified kernel config in Yocto? 也 Quick rebuild of device tree only with Yocto/bitbake?

我创建了一个新的meta-local 层并将其添加到bblayer 然后recipetool 命令将我的 dts 文件添加到新层。将KERNEL_DEVICETREE += "custom.dtb" 添加到在meta-local 中生成的.bbappend 文件中，然后运行bitbake build image 命令到目前为止 但是，当我尝试构建映像时，我似乎遇到了以下错误。

    Loading cache: 100% |############################################| Time: 0:00:00
Loaded 3474 entries from dependency cache.
Parsing recipes: 100% |##########################################| Time: 0:00:00
Parsing of 2309 .bb files complete (2307 cached, 2 parsed). 3476 targets, 358 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION           = "1.46.0"
BUILD_SYS            = "x86_64-linux"
NATIVELSBSTRING      = "universal"
TARGET_SYS           = "arm-poky-linux-gnueabi"
MACHINE              = "sama5d27-wlsom1-ek-sd"
DISTRO               = "poky-atmel"
DISTRO_VERSION       = "3.1.7"
TUNE_FEATURES        = "arm vfp cortexa5 neon vfpv4 thumb callconvention-hard"
TARGET_FPU           = "hard"
meta                 
meta-poky            
meta-yocto-bsp       = "dunfell:97a9f30f1c457c55bf0c791d0466ff8620110a49"
meta-oe              
meta-networking      
meta-webserver       
meta-python          
meta-initramfs       = "dunfell:2915810edbb6599051e30efb3b7f805665ddcc23"
meta-atmel           = "dunfell:d6e30f2c0e3592ed11f3a4c8380a14d0a9066ba6"
meta-multimedia      = "dunfell:2915810edbb6599051e30efb3b7f805665ddcc23"
meta-aws             = "dunfell:2e2a1c65603dc5d11349e25dc9470a65cbeb8e65"
meta-freshair        
meta-local           
workspace            = "dunfell:97a9f30f1c457c55bf0c791d0466ff8620110a49"

Initialising tasks: 100% |#######################################| Time: 0:00:04
Sstate summary: Wanted 294 Found 262 Missed 32 Current 2095 (89% match, 98% complete)
NOTE: Executing Tasks
ERROR: linux-at91-5.4+gitAUTOINC+3dba8c9991-r0 do_compile: oe_runmake failed
ERROR: linux-at91-5.4+gitAUTOINC+3dba8c9991-r0 do_compile: Execution of '/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/temp/run.do_compile.57871' failed with exit code 1:
  GEN     Makefile
  CALL    /home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/scripts/atomic/check-atomics.sh
  CALL    /home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  Kernel: arch/arm/boot/Image is ready
  Kernel: arch/arm/boot/zImage is ready
make[2]: *** No rule to make target 'arch/arm/boot/dts/new_name.dtb'.  Stop.
make[1]: *** [/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/Makefile:1265: new_name.dtb] Error 2
make: *** [/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/Makefile:179: sub-make] Error 2
WARNING: exit code 1 from a shell command.

ERROR: Logfile of failure stored in: /home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/temp/log.do_compile.57871
Log data follows:
| DEBUG: Executing shell function do_compile
| NOTE: KBUILD_BUILD_TIMESTAMP: Thu Jan 14 12:54:56 UTC 2021
| NOTE: make -j 12 HOSTCC=gcc  -isystem/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/include -O2 -pipe -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,--enable-new-dtags                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-O1 -Wl,--allow-shlib-undefined -Wl,--dynamic-linker=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/sysroots-uninative/x86_64-linux/lib/ld-linux-x86-64.so.2 HOSTCPP=gcc  -E HOSTCXX=g++  -isystem/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/include -O2 -pipe -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,--enable-new-dtags                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-O1 -Wl,--allow-shlib-undefined -Wl,--dynamic-linker=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/sysroots-uninative/x86_64-linux/lib/ld-linux-x86-64.so.2 zImage CC=arm-poky-linux-gnueabi-gcc  -mno-thumb-interwork -marm -fuse-ld=bfd -fmacro-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0=/usr/src/debug/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0=/usr/src/debug/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot=                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native=  -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source=/usr/src/kernel   LD=arm-poky-linux-gnueabi-ld.bfd
|   GEN     Makefile
|   CALL    /home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/scripts/atomic/check-atomics.sh
|   CALL    /home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/scripts/checksyscalls.sh
|   CHK     include/generated/compile.h
|   Kernel: arch/arm/boot/Image is ready
|   Kernel: arch/arm/boot/zImage is ready
| NOTE: make -j 12 HOSTCC=gcc  -isystem/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/include -O2 -pipe -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,--enable-new-dtags                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-O1 -Wl,--allow-shlib-undefined -Wl,--dynamic-linker=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/sysroots-uninative/x86_64-linux/lib/ld-linux-x86-64.so.2 HOSTCPP=gcc  -E HOSTCXX=g++  -isystem/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/include -O2 -pipe -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,--enable-new-dtags                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-O1 -Wl,--allow-shlib-undefined -Wl,--dynamic-linker=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/sysroots-uninative/x86_64-linux/lib/ld-linux-x86-64.so.2 at91-sama5d27_wlsom1_ek.dtb CC=arm-poky-linux-gnueabi-gcc  -mno-thumb-interwork -marm -fuse-ld=bfd -fmacro-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0=/usr/src/debug/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0=/usr/src/debug/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot=                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native=  -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source=/usr/src/kernel   LD=arm-poky-linux-gnueabi-ld.bfd
| NOTE: make -j 12 HOSTCC=gcc  -isystem/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/include -O2 -pipe -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,--enable-new-dtags                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-O1 -Wl,--allow-shlib-undefined -Wl,--dynamic-linker=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/sysroots-uninative/x86_64-linux/lib/ld-linux-x86-64.so.2 HOSTCPP=gcc  -E HOSTCXX=g++  -isystem/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/include -O2 -pipe -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -L/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,--enable-new-dtags                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath-link,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/usr/lib                         -Wl,-rpath,/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native/lib                         -Wl,-O1 -Wl,--allow-shlib-undefined -Wl,--dynamic-linker=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/sysroots-uninative/x86_64-linux/lib/ld-linux-x86-64.so.2 new_name.dtb CC=arm-poky-linux-gnueabi-gcc  -mno-thumb-interwork -marm -fuse-ld=bfd -fmacro-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0=/usr/src/debug/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0=/usr/src/debug/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot=                      -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/recipe-sysroot-native=  -fdebug-prefix-map=/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source=/usr/src/kernel   LD=arm-poky-linux-gnueabi-ld.bfd
| make[2]: *** No rule to make target 'arch/arm/boot/dts/new_name.dtb'.  Stop.
| make[1]: *** [/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/Makefile:1265: new_name.dtb] Error 2
| make: *** [/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/Makefile:179: sub-make] Error 2
| ERROR: oe_runmake failed
| WARNING: exit code 1 from a shell command.
| ERROR: Execution of '/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/temp/run.do_compile.57871' failed with exit code 1:
|   GEN     Makefile
|   CALL    /home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/scripts/atomic/check-atomics.sh
|   CALL    /home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/scripts/checksyscalls.sh
|   CHK     include/generated/compile.h
|   Kernel: arch/arm/boot/Image is ready
|   Kernel: arch/arm/boot/zImage is ready
| make[2]: *** No rule to make target 'arch/arm/boot/dts/new_name.dtb'.  Stop.
| make[1]: *** [/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/Makefile:1265: new_name.dtb] Error 2
| make: *** [/home/fakhruddin/workspace/Freshair/my_dir/poky/build/tmp/work-shared/sama5d27-wlsom1-ek-sd/kernel-source/Makefile:179: sub-make] Error 2
| WARNING: exit code 1 from a shell command.
| 
ERROR: Task (/home/fakhruddin/workspace/Freshair/my_dir/poky/../meta-atmel/recipes-kernel/linux/linux-at91_5.4.81.bb:do_compile) failed with exit code '1'
NOTE: Tasks Summary: Attempted 6463 tasks of which 6457 didn't need to be rerun and 1 failed.

Summary: 1 task failed:
  /home/fakhruddin/workspace/Freshair/my_dir/poky/../meta-atmel/recipes-kernel/linux/linux-at91_5.4.81.bb:do_compile
Summary: There were 2 ERROR messages shown, returning a non-zero exit code.

如果我遗漏了任何必需的信息，请帮助并告诉我。

谢谢你和问候，

索希尔

Answer 1

Linux 内核设备树位于：

/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/git/arch/arm/boot/dts

请注意，源代码位于 git 中，最终版本位于 build 中。

您必须确保 new_name.dtb 出现在主 Makefile 中：

/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/git/arch/arm/boot/dts/Makfile

+dtb-$(CONFIG_SOC_AT91SAM9) += new_name.dtb

现在必须将新设备树添加到 KERNEL_DEVICETREE 变量中，这会告诉 Yocto 构建哪些内核设备树并将其发送到引导分区，以便 u-boot 在引导板时将其中一个加载到 RAM 中：

KERNEL_DEVICETREE += "new_name.dtb"

现在，在您了解了设备树是如何放置在内核中之后，您可以将其自动化，您为您的 linux-at91 内核主配方创建一个 bbappend 配方，并在那里添加您的自定义设备树。

meta-local/
  recipes-kernel/
     linux/
       files/
          new_custom.dts
       linux-at91_%.bbappend

现在，您需要在编译内核之前复制新的 dts 文件（do_compile），最好是在 do_configure 之后：

FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SRC_URI_append = " file://new_custom.dts"
do_configure_append(){
 cp ${WORKDIR}/new_custom.dts ${S}/arch/arm/boot/dts
 echo "dtb-$(CONFIG_SOC_AT91SAM9) += new_dts.dtb" >> ${S}/arch/arm/boot/dts/Makefile
}

现在，您的新设备树将被编译，任何编译错误都可能是由于语法错误。

在知道设备树已编译并添加到KERNEL_DEVICETREE 后，这意味着它与所有其他设备树一起存在于引导分区中，同时也在KERNEL_DEVICETREE 变量中，但 u-boot 仅加载其中一个在加载 Linux 内核之前将它们放在 RAM 中，并且该设备树设置在您的 u-boot 目标 defconfig 文件中：

/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/u-boot-.../<version>/git/configs/your_machine_defconfig

您可以在位于主板 BSP 层的机器配置文件中的 UBOOT_CONFIG 变量中找到 your_machine_defconfig：

meta-<board>/conf/machine/<board>.conf

找到defconfig后可以找到变量DEFAULT_FDT_FILE。

首先，不要更改它，只需构建您的映像，然后在 uboot 阶段暂停并printenv 以查看fdt_file 变量并将其设置为您的new_name.dtb 文件和saveenv 以将其保存为每个开机。

如果没问题，您现在可以修补您的 uboot defconfig 文件以设置新的设备树文件。

Yocto 提示：

Kernel recipe 中的${WORKDIR} 指向：

/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/

${S}指向${WORKDIR}下的git目录

/tmp/work/sama5d27_wlsom1_ek_sd-poky-linux-gnueabi/linux-at91/5.4+gitAUTOINC+3dba8c9991-r0/git

这就是我从${WORKDIR}复制新设备树的原因

Answer 2

我建议使用devtool modify linux-at91 来修改 linux 内核源代码树。这将在您的${TOPDIR}/workspace/sources/linux-at91 中创建一个 linux-at91 文件夹。如果您不知道您的 ${TOPDIR}，请尝试使用bitbake -e <recipe-name> | grep "TOPDIR"。 bitbake -e 将打印该配方的整个元数据，在这里您可以使用 grep 查找不同变量的分配。 （就像你的 KERNEL_DEVICETREE）

${TOPDIR}/workspace/sources/linux-at91

这将是您的 linux-at91 配方的源代码树。

将您的 dts 文件复制到 ${TOPDIR}/workspace/sources/linux-at91/arch/arm/boot/dts。

修改 Makefile 以包含您的 dts，正如 @BelHadjSalem TALEL 所指出的（谢谢！）。

提交这些更改并生成补丁。

在您自己的层中，recipes-kernel/linux-at91/linux-at91 下放置此补丁文件。添加recipes-kernel/linux-at91/linux-at91.bbappend 以包含此补丁，如下所示：

FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
SRC_URI += "file://0001-add-dts-file.patch"

---

现在要构建您的自定义机器，添加 conf/machine/custom-machine.conf 并为您的自定义 KERNEL_DEVICETREE 添加一个条目，如图所示 here

# This will inherit your base machine
require conf/machine/sama5d27-wlsom1-ek-sd.conf

KERNEL_DEVICETREE = "your-dts-file.dtb"

---

总体而言，您的图层将包含以下文件：

- conf/layer.conf
- conf/machine/custom-machine.conf (Contains the above settings)
- recipes-kernel/linux-at91/linux-at91/0001-add-dts-file.patch
- recipes-kernel/linux-at91/linux-at91/linux-at91.bbappend

Answer 3

仅供参考@BelHadjSalem 的良好响应：我们也可以使用subdir，而不是通过“do_configure_append”手动复制 dts 文件。 所以而不是

do_configure_append() {
    cp ${WORKDIR}/new_custom.dts ${S}/arch/arm/boot/dts
}

我们只需要：

SRC_URI_append = " file://new_custom.dts;subdir=git/arch/arm/boot/dts"