Choose OpenBMC branch dunfell

  • Master Branch problem
    The master branch define the /meta-evb/meta-evb-raspberrypi with different folder structure, which will break the openbmc-env action.

  • Branch we use: dunfell

cd ~/openbmc
git checkout dunfell

Using docker to build OpenBMC

We will create CROP command file yocto-poky to build OpenBMC

  • File yocto-poky

In ~/bin/, we create the file yocto-poky as following,

OBMC_PROJECT=~/
docker run --rm -it -v $OBMC_PROJECT:/workdir crops/poky --workdir=/workdir
  • Set file attribute to executable
chmod +777 yocto-poky
  • Add PATH at end of ~/.bashrc
export PATH=$PATH:~/bin
  • Enter CROP docker container
$ yocto-poky

This will enter docker compiler environments.

Setup Raspberry Pi

  • Setup Build

In the docker compiler environment,

$ /workdir$ cd openbmc
$ /workdir/openbmc$ export TEMPLATECONF=meta-evb/meta-evb-raspberrypi/conf/
/workdir/openbmc$ . openbmc-env

This will create /workdir/openbmc/build folder.

  • Setup Shared Download Directory build/downloads/

Create symbolic link downloads to shared download directory ~/openbmc_downloads.

/workdir/openbmc/build$ ln -sf /workdir/openbmc_downloads/ downloads
  • Adjust MACHINE In local.conf, change MACHINE settings to raspberrypi3 from raspberrypi.

Test Builds

First Build

  • bitbake image
$ bitbake obmc-phosphor-image
  • error message
ERROR: obmc-phosphor-image-1.0-r0 do_generate_static: Image '/workdir/openbmc/build/tmp/deploy/images/raspberrypi3/fitImage-obmc-phosphor-initramfs-raspberrypi3-raspberrypi3' is too large!
ERROR: Logfile of failure stored in: /workdir/openbmc/build/tmp/work/raspberrypi3-openbmc-linux-gnueabi/obmc-phosphor-image/1.0-r0/temp/log.do_generate_static.2145213
ERROR: Task (/workdir/openbmc/meta-phosphor/recipes-phosphor/images/obmc-phosphor-image.bb:do_generate_static) failed with exit code '1'

Adjust FLASH_SIZE to “131072” for the build error

Two options,

  1. Define it at end of openbmc/meta-raspberrypi/conf/machine/raspberrypi3.conf

     FLASH_SIZE ?= "131072"

  2. Define it at end of build/conf/local.conf. This will just override the settings in raspberrypi3.conf.

     FLASH_SIZE ?= "131072"

Both Build Image Successfully. We will just use option 2, changes in the build/conf/local.conf.

Change Machine to “raspberrypi3-64”

At build/conf/local.conf

    MACHINE ??= "raspberrypi3-64"

Build Image Successfully

SD card Image Type

In order to generate sd card image, we will also add image type to IMAGE_FSTYPES in local.conf

IMAGE_FSTYPES += " rpi-sdimg"

Finale

The following are the local.conf settings to generate OpenBMC images.

  • Configuration for Raspberry Pi Zero WIFI

At build/conf/local.conf

MACHINE ??= "raspberrypi0-wifi"
...

GPU_MEM = "16"
DISTRO_FEATURE_append = " systemd"
VIRTUAL-RUNTIME_init_manager = " systemd"
DISTRO_FEATURES_BACKFILL_CONSIDERED = "sysvinit"
VIRTUAL-RUNTIME_initscripts = ""
IMAGE_FSTYPES += " rpi-sdimg"
IMAGE_INSTALL_append = " ipmitool wpa-supplicant"
FLASH_SIZE ?= "131072"
  • Configuration for Raspberry Pi3

At build/conf/local.conf

MACHINE ??= "raspberrypi3"

...

GPU_MEM = "16"
DISTRO_FEATURE_append = " systemd"
VIRTUAL-RUNTIME_init_manager = " systemd"
DISTRO_FEATURES_BACKFILL_CONSIDERED = "sysvinit"
VIRTUAL-RUNTIME_initscripts = ""
IMAGE_FSTYPES += " rpi-sdimg"
IMAGE_INSTALL_append = " ipmitool wpa-supplicant"
FLASH_SIZE ?= "131072"
  • Build Result
okyuser@4a64fe10fd12:/workdir/openbmc/build$ bitbake obmc-phosphor-image
Parsing recipes: 100% |################################################################| Time: 0:00:04
Parsing of 2286 .bb files complete (0 cached, 2286 parsed). 3391 targets, 354 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      = "ubuntu-18.04"
TARGET_SYS           = "arm-openbmc-linux-gnueabi"
MACHINE              = "raspberrypi3"
DISTRO               = "openbmc-phosphor"
DISTRO_VERSION       = "0.1.0"
TUNE_FEATURES        = "arm vfp cortexa7 neon vfpv4 thumb callconvention-hard"
TARGET_FPU           = "hard"
meta                 
meta-poky            
meta-oe              
meta-networking      
meta-python          
meta-webserver       
meta-phosphor        
meta-raspberrypi     = "dunfell:61a2d43a172b70aa34fd7ec33fc048a211fa5c4c"

Initialising tasks: 100% |#############################################################| Time: 0:00:03
Sstate summary: Wanted 64 Found 17 Missed 47 Current 1389 (26% match, 96% complete)
NOTE: Executing Tasks
NOTE: Tasks Summary: Attempted 4230 tasks of which 4038 didn't need to be rerun and all succeeded.