R-Car/Boards/Yocto-Gen3

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This page contains information on building and running Yocto on:

NOTE: USE OFFICIAL DOCUMENTATION provided with R-Car BSPs FOR Salvator-X boards

Yocto versions

Poky-2.0.1 is supported. Specific commit of meta-openembedded is required.

Preliminary steps

  1. Download evaluation version of proprietary graphics and multimedia drivers from Renesas.

    To download Multimedia and Graphics library and related Linux drivers, please use the following link:
    https://www.renesas.com/en-us/solutions/automotive/rcar-demoboard.html

    Graphic drivers are required for Wayland. Multimedia drivers are optional.

  2. Install required packages
    Ubuntu and Debian
    sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib \
         build-essential chrpath socat libsdl1.2-dev xterm python-crypto
    
    Fedora
    sudo yum install gawk make wget tar bzip2 gzip python unzip perl patch \
         diffutils diffstat git cpp gcc gcc-c++ glibc-devel texinfo chrpath \
         ccache perl-Data-Dumper perl-Text-ParseWords perl-Thread-Queue socat \
         SDL-devel xterm
    

    Refer to Yocto Project Quick Start for more information.

Building the BSP for Renesas H3ULCB, M3ULCB, Salvator-X H3/M3

NOTE: to have ADAS View and HAD Solution kits supported follow instructions: R-Car Yocto Gen3 ADAS

  1. Create a directory and switch to it
    Warning! Yocto builds require a lot of disk space (up to 100 GB). Make sure you have got enough before starting the build.
    mkdir build
    cd build
    export WORK=`pwd`
    
  2. Clone basic Yocto layers:
    cd $WORK
    git clone git://git.yoctoproject.org/poky
    git clone git://git.openembedded.org/meta-openembedded
    git clone git://git.linaro.org/openembedded/meta-linaro.git
    git clone git://github.com/renesas-rcar/meta-renesas
    
  3. Switch to proper branches/commits
    1. For Yocto v2.16.0
      cd $WORK/poky
      git checkout -b tmp yocto-2.1.2
      cd $WORK/meta-openembedded
      git checkout -b tmp 55c8a76da5dc099a7bc3838495c672140cedb78e
      cd $WORK/meta-linaro
      git checkout -b tmp 2f51d38048599d9878f149d6d15539fb97603f8f
      cd $WORK/meta-renesas
      git checkout -b tmp 3613b2780a6b5d5d70ea6802be5060a8214cbdb5
      

    Another versions are not tested for compatibility. Legacy BSP instruction can be found here R-Car Yocto Gen3 legacy

  4. Apply Linaro-GCC patch file:
    cd $WORK/meta-renesas
    export PATCH_DIR=meta-rcar-gen3/docs/sample/patch/patch-for-linaro-gcc
    patch -p1 < ${PATCH_DIR}/0001-rcar-gen3-add-readme-for-building-with-Linaro-Gcc.patch
    unset PATCH_DIR
    
  5. Unzip downloaded proprietary driver modules to $WORK/proprietary folder.
    $ unzip -d $WORK/proprietary -oq R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-*.zip 
    $ unzip -d $WORK/proprietary -oq R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-*.zip
    

    You should see the following files:

    1. For Yocto v2.16.0
      $ ls -1 $WORK/proprietary/*.tar.gz
      R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-20170125.tar.gz
      R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-20170125.tar.gz
      
  6. Populate meta-renesas with proprietary software packages.
    export PKGS_DIR=$WORK/proprietary
    cd $WORK/meta-renesas
    sh meta-rcar-gen3/docs/sample/copyscript/copy_evaproprietary_softwares.sh -f $PKGS_DIR
    unset PKGS_DIR
    
  7. Setup build environment
    cd $WORK
    source poky/oe-init-build-env
    
  8. Prepare default configuration files.
    cp $WORK/meta-renesas/meta-rcar-gen3/docs/sample/conf/<salvator-x|h3ulcb|m3ulcb>/linaro-gcc/mmp/*.conf ./conf/
    cd $WORK/build
    cp conf/local-wayland.conf conf/local.conf
    
  9. Edit $WORK/build/conf/local.conf to enable/disable graphics and multimedia proprietary drivers support
  10. Edit local.conf to choose SoC variant
  11. For Salvator-X board only:

    1. Edit local.conf to select IO configuration (by default only Salvator-X board peripherals are enabled):
      SOC_FAMILY = "r8a7796" (make this change only for M3 Salvator-X, since the default is H3 Salvator-X)
      
  12. Edit local.conf with evaluation packages requirements:
    1. For Yocto v2.16.0 (to enable EVA_ prefix during packages install)
      DISTRO_FEATURES_append = " use_eva_pkg"
      
  13. Start the build
    bitbake core-image-weston
    
  14. Building image can take up to a few hours depending on your host system performance.
    After the build has been completed successfully, you should see the output similar to:
    NOTE: Tasks Summary: Attempted 4704 tasks of which 31 didn't need to be rerun and all succeeded.
    

    and the command prompt should return.

  15. Bitbake has generated all the necessary files in ./tmp/deploy/images directory.
    You can verify its content:
    $ ls -1 `find ./tmp/deploy/images/h3ulcb/ -maxdepth 1 -type l -print`
    ./tmp/deploy/images/h3ulcb/core-image-weston-h3ulcb.cpio.gz
    ./tmp/deploy/images/h3ulcb/core-image-weston-h3ulcb.ext4
    ./tmp/deploy/images/h3ulcb/core-image-weston-h3ulcb.manifest
    ./tmp/deploy/images/h3ulcb/core-image-weston-h3ulcb.tar.bz2
    ./tmp/deploy/images/h3ulcb/Image
    ./tmp/deploy/images/h3ulcb/Image-h3ulcb.bin
    ./tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb.dtb
    ./tmp/deploy/images/h3ulcb/modules-h3ulcb.tgz
    ./tmp/deploy/images/h3ulcb/u-boot.bin
    ./tmp/deploy/images/h3ulcb/u-boot-elf-h3ulcb.srec
    ./tmp/deploy/images/h3ulcb/u-boot-elf.srec
    ./tmp/deploy/images/h3ulcb/u-boot-h3ulcb.bin
    

    Image is a Kernel image, *.dtb is a blob file, core-image-weston-h3ulcb.tar.bz2 is the rootfs, modules-h3ulcb.tgz are kernel modules.

  16. You can now proceed with running Yocto images

Running Yocto images

Linux kernel can be booted from microSD card or from TFTP. Root FS can be mounted from micro SD card or via NFS.

Loading kernel via TFTP and rootfs via NFS

Follow these steps to setup working TFTP and NFS server:

  1. Setup a TFTP server.

    Ubuntu

    Install tftpd-hpa package along with tftp tools:

    sudo apt-get install tftp tftpd-hpa
    

    Fedora

    1. Install necessary packages:
      sudo yum install tftp-server tftp
      

      tftp-server is a part of xinetd. See Fedora manual for more information.

    2. Enable TFTP server:
      sudo vi /etc/xinetd.d/tftp 
      
      Set
      disable = no
      Save file and exit.
    3. Start xinetd:
      sudo systemctl start xinetd.service
      sudo systemctl enable xinetd.service
      
  2. Copy Image and Image-r8a7795-h3ulcb.dtb from $WORK/build/tmp/deploy/images/h3ulcb/ to TFTP server root.

    Ubuntu

    cp $WORK/build/tmp/deploy/images/h3ulcb/Image /srv/tftp/
    cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb.dtb /srv/tftp/
    

    Fedora

    cp $WORK/build/tmp/deploy/images/h3ulcb/Image /var/lib/tftpboot/
    cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb.dtb /var/lib/tftpboot/
    
  3. Verify that TFTP server is working.
    tftp localhost -c get Image && ls Image
    
  4. Setup NFS server.

    Debian/Ubuntu

    1. Install necessary packages:
      sudo apt-get install nfs-kernel-server nfs-common
      
    2. Start NFS server:
      sudo /etc/init.d/nfs-kernel-server start
      

    Fedora

    1. Install necessary packages:
      sudo yum install nfs-utils
      
    2. Enable and start nfs server:
      sudo systemctl enable rpcbind.service 
      sudo systemctl enable nfs-server.service 
      sudo systemctl enable nfs-lock.service 
      sudo systemctl enable nfs-idmap.service
      sudo systemctl start rpcbind.service 
      sudo systemctl start nfs-server.service 
      sudo systemctl start nfs-lock.service 
      sudo systemctl start nfs-idmap.service
      
  5. Export root FS to NFS. (Change IMAGE and MACHINE to fit your build).
    1. Unpack rootfs to a dedicated directory:
      IMAGE=weston
      MACHINE=salvator-x|h3ulcb|m3ulcb
      NFS_ROOT=/nfs/${MACHINE}
      sudo mkdir -p "${NFS_ROOT}"
      sudo rm -rf "${NFS_ROOT}"/*
      sudo tar -xjf "${WORK}/build/tmp/deploy/images/${MACHINE}/core-image-${IMAGE}-${MACHINE}-*.tar.bz2" -C "${NFS_ROOT}"
      sync
      
    2. Edit /etc/exports:
      sudo vi /etc/exports
      

      add

      /nfs/h3ulcb	*(rw,no_subtree_check,sync,no_root_squash,no_all_squash)
      /nfs/salvator-x	*(rw,no_subtree_check,sync,no_root_squash,no_all_squash)
      

      Save the file and exit.

    3. Force NFS server to re-read /etc/exports
      sudo exportfs -a
  6. Verify that NFS is working.
    [builduser@buildmachine ~]$ showmount -e localhost
    Export list for localhost:
    /nfs/h3ulcb *
    /nfs/salvator-x *
    
  7. Boot into U-Boot command prompt
    1. Connect to serial console over microUSB using minicom or picocom.
    2. Switch the board on or reset it. Press any key to stop U-Boot automatic countdown.

    Refer to H3SK board page, M3SK board page, Salvator-X board page for more information.

  8. Configure Ethernet, TFTP, and kernel command line in U-Boot:
    setenv ipaddr <board-ip>
    setenv serverip <your-computer-ip>
    setenv bootcmd 'tftp 0x48080000 Image; tftp 0x48000000 Image-r8a7795-h3ulcb.dtb; booti 0x48080000 - 0x48000000'
    setenv bootargs 'ignore_loglevel rw root=/dev/nfs nfsroot=<your-computer-ip>:<nfs-path>,nfsvers=3 ip=<board-ip>:<your-computer-ip>::255.255.255.0:h3ulcb'
    saveenv
    

    Replace <board-ip> with the proper IP address for the board. Replace <your-computer-ip> with the IP address of your computer, where tftp and nfs servers are installed. Replace <nfs-path> with the exported path of the root FS.
    For example:

    setenv ipaddr 192.168.1.3
    setenv serverip 192.168.1.2
    setenv bootcmd 'tftp 0x48080000 Image; tftp 0x48000000 Image-r8a7795-h3ulcb.dtb; booti 0x48080000 - 0x48000000'
    setenv bootargs 'ignore_loglevel rw root=/dev/nfs nfsroot=192.168.1.2:/nfs/h3ulcb,nfsvers=3 ip=192.168.1.3:192.168.1.2::255.255.255.0:h3ulcb'
    saveenv
    

    You can also use

    dhcp
    

    command to obtain information from DHCP server.
    Note: You can always see the environment with printenv command. Refer to U-Boot manual for details.

  9. Verify the connection over Ethernet from U-Boot:
    ping <your-computer-ip>
    

    You should see:

    => ping 192.168.1.2    
    ravb:0 is connected to ravb.  Reconnecting to ravb
    ravb Waiting for PHY auto negotiation to complete.. done
    ravb: 100Base/Full
    Using ravb device
    host 192.168.1.2 is alive
    
  10. Reset the board by pushing reset button
    Refer to H3SK board page, M3SK board page, Salvator-X board page for more information.
  11. The board should boot the kernel:
    NOTICE:  BL2: R-Car Gen3 Initial Program Loader(CA57) Rev.1.0.10
    NOTICE:  BL2: PRR is R-Car H3 ES1.0
    NOTICE:  BL2: Boot device is HyperFlash(80MHz)
    NOTICE:  BL2: LCM state is CM
    NOTICE:  BL2: AVS setting succeeded. DVFS_SetVID=0x52
    NOTICE:  BL2: DDR1600(rev.0.10)
    NOTICE:  BL2: DRAM Split is 4ch
    NOTICE:  BL2: QoS is default setting(rev.0.32)
    NOTICE:  BL2: Lossy Decomp areas
    NOTICE:       Entry 0: DCMPAREACRAx:0x80000540 DCMPAREACRBx:0x570
    NOTICE:       Entry 1: DCMPAREACRAx:0x40000000 DCMPAREACRBx:0x0
    NOTICE:       Entry 2: DCMPAREACRAx:0x20000000 DCMPAREACRBx:0x0
    NOTICE:  BL2: v1.1(release):c2f9fc9
    NOTICE:  BL2: Built : 00:36:25, Nov 20 2016
    NOTICE:  BL2: Normal boot
    NOTICE:  BL2: dst=0xe631a1a8 src=0x8180000 len=512(0x200)
    NOTICE:  BL2: dst=0x43f00000 src=0x8180400 len=6144(0x1800)
    NOTICE:  BL2: dst=0x44000000 src=0x81c0000 len=65536(0x10000)
    NOTICE:  BL2: dst=0x44100000 src=0x8200000 len=524288(0x80000)
    NOTICE:  BL2: dst=0x50000000 src=0x8640000 len=1048576(0x100000)
    
    
    U-Boot 2015.04 (Nov 20 2016 - 00:54:11)
    
    CPU: Renesas Electronics R8A7795 rev 1.0
    Board: H3ULCB
    I2C:   ready
    DRAM:  3.9 GiB
    MMC:   sh-sdhi: 0, sh-sdhi: 1
    In:    serial
    Out:   serial
    Err:   serial
    Net:   ravb
    Hit any key to stop autoboot:  0 
    ravb Waiting for PHY auto negotiation to complete.. done
    ravb: 100Base/Full
    BOOTP broadcast 1
    BOOTP broadcast 2
    BOOTP broadcast 3
    DHCP client bound to address 192.166.10.31 (1287 ms)
    Using ravb device
    TFTP from server 192.166.10.1; our IP address is 192.166.10.31
    Filename 'Image'.
    Load address: 0x48080000
    Loading: #################################################################
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             ####################################################
             627 KiB/s
    done
    Bytes transferred = 13905920 (d43000 hex)
    ravb:0 is connected to ravb.  Reconnecting to ravb
    ravb Waiting for PHY auto negotiation to complete. done
    ravb: 100Base/Full
    Using ravb device
    TFTP from server 192.166.10.1; our IP address is 192.166.10.31
    Filename 'Image-r8a7795-h3ulcb.dtb'.
    Load address: 0x48000000
    Loading: #############
             12.7 KiB/s
    done
    Bytes transferred = 66470 (103a6 hex)
    ## Flattened Device Tree blob at 48000000
       Booting using the fdt blob at 0x48000000
       Using Device Tree in place at 0000000048000000, end 00000000480133a5
    
    Starting kernel ...                                                                                                                         
    

How to prepare and boot from eMMC/SD card

This section describes steps that are necessary for preparing and booting from SD card.

Preparing eMMC/SD card

In order to prepare you SD card, follow these instructions on host machine:

1. Partion your SD card to set 1 partition and ID=83 (Linux)
Make sure the SD card doesn't contain any important files.
WARNING! These steps may erase the SD card completely. All files my be lost.

$ fdisk /dev/mmcblk0
-> d
-> n
-> p
-> 1
-> t
-> 83

2. Format this partition to ext3 (or ext4)

$ mkfs.ext3 /dev/mmcblk0p1

3. Mount this partition on your host to any directory and upack the core-image-weston-*.tar.bz2 into mounted folder.

$ mount /dev/mmcblk0p1 /mnt
$ cd <your_yocto_build_directory>
$ tar xfj  build/tmp/deploy/images/h3ulcb/core-image-weston-h3ulcb-*.rootfs.tar.bz2  -C /mnt

NOTE: probably you need to be a root user, hence use "sudo"

Configure U-Boot to boot from SD card

Proper U-Boot command to boot from SD:

# setenv bootargs 'rw root=/dev/mmcblk1p1 rootfstype=ext3 rootwait'
# ext2load mmc 0:1 0x48080000 /boot/Image
# ext2load mmc 0:1 0x48000000 /boot/Image-r8a7795-h3ulcb.dtb
# booti 0x48080000 - 0x48000000'

Example of U-Boot environment variables:

baudrate=115200
bootargs_emmc=rw root=/dev/mmcblk0p1 rootfstype=ext3 rootwait
bootargs_nfs=rw root=/dev/nfs rootwait ip=dhcp
bootargs_sd0=rw root=/dev/mmcblk1p1 rootfstype=ext3 rootwait
bootcmd=run bootcmd_sd0
bootcmd_emmc=set bootargs ${bootargs_emmc};ext2load mmc 1:1 0x48080000 /boot/Image;ext2load mmc 1:1 0x48000000 /boot/${dtb};run booti_cmd
bootcmd_nfs=set bootargs ${bootargs_nfs};bootp 0x48080000 Image;tftp 0x48000000 ${dtb};run booti_cmd
bootcmd_sd0=set bootargs ${bootargs_sd0};ext2load mmc 0:1 0x48080000 /boot/Image;ext2load mmc 0:1 0x48000000 /boot/${dtb};run booti_cmd
bootdelay=3
booti_cmd=booti 0x48080000 - 0x48000000
dtb=Image-r8a7795-h3ulcb.dtb
ethact=ravb
ethaddr=2E:09:0A:00:BE:11
fdt_high=0xffffffffffffffff
initrd_high=0xffffffffffffffff
stderr=serial
stdin=serial
stdout=serial
ver=U-Boot 2015.04 (Sep 23 2016 - 13:45:29)
Environment size: 1092/131068 bytes

To verify the SD card, type the following in U-Boot prompt:

=> mmc dev 0 
switch to partitions #0, OK
mmc0 is current device
=> mmc info
Device: sh-sdhi
Manufacturer ID: 3
OEM: 5344
Name: SL64G 
Tran Speed: 50000000
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 59.5 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes
=> ext2ls mmc 0:1 /boot
<DIR>       4096 .
<DIR>       4096 ..
<SYM>         32 Image
        14039040 Image-4.9.0-yocto-standard
           69584 Image-r8a7795-h3ulcb.dtb

Build scripts examples

  1. Build preparation
    1. For Yocto v2.16.0
      #!/bin/sh
      
      mkdir build || exit
      cd build
      WORK=`pwd`
      echo $WORK
      
      git clone git://git.yoctoproject.org/poky
      git clone git://git.linaro.org/openembedded/meta-linaro.git
      git clone git://git.openembedded.org/meta-openembedded
      git clone git://github.com/renesas-rcar/meta-renesas
      
      cd $WORK/poky
      git checkout -b tmp yocto-2.1.2
      cd $WORK/meta-linaro
      git checkout -b tmp 2f51d38048599d9878f149d6d15539fb97603f8f
      cd $WORK/meta-openembedded
      git checkout -b tmp 55c8a76da5dc099a7bc3838495c672140cedb78e
      cd $WORK/meta-renesas
      git checkout -b tmp 3613b2780a6b5d5d70ea6802be5060a8214cbdb5
      
      cd $WORK/meta-renesas
      export PATCH_DIR=meta-rcar-gen3/docs/sample/patch/patch-for-linaro-gcc
      patch -p1 < ${PATCH_DIR}/0001-rcar-gen3-add-readme-for-building-with-Linaro-Gcc.patch
      unset PATCH_DIR
      
      cd $WORK/
      PKGS_DIR=$WORK/../proprietary
      cd $WORK/meta-renesas
      #sh meta-rcar-gen3/docs/sample/copyscript/copy_proprietary_softwares.sh -f $PKGS_DIR
      sh meta-rcar-gen3/docs/sample/copyscript/copy_evaproprietary_softwares.sh -f $PKGS_DIR
      
  2. Building yocto for H3ULCB board
    1. For Yocto v2.16.0
      #!/bin/sh
      
      cd build
      WORK=`pwd`
      echo $WORK
      
      cd $WORK
      source poky/oe-init-build-env
      
      #cp $WORK/meta-renesas/meta-rcar-gen3/docs/sample/conf/h3ulcb/linaro-gcc/bsp/*.conf ./conf/.
      #cp $WORK/meta-renesas/meta-rcar-gen3/docs/sample/conf/h3ulcb/linaro-gcc/gfx-only/*.conf ./conf/.
      cp $WORK/meta-renesas/meta-rcar-gen3/docs/sample/conf/h3ulcb/linaro-gcc/mmp/*.conf ./conf/.
      
      cd $WORK/build
      cp conf/local-wayland.conf conf/local.conf
      echo "DISTRO_FEATURES_append = \" use_eva_pkg\"" >> $WORK/build/conf/local.conf
      
      bitbake core-image-weston
      

Known issues and limitations

TBD