R-Car/Boards/Yocto-Gen3/v3.21.0

This page contains information on building and running Yocto on:

Renesas R-Car-H3 Starter Kit Premier (unofficial name - H3ULCB), https://www.renesas.com/us/en/solutions/automotive/adas/solution-kits/r-car-starter-kit.html
Renesas R-Car-M3 Starter Kit Pro (unofficial name - M3ULCB), https://www.renesas.com/us/en/solutions/automotive/adas/solution-kits/r-car-starter-kit.html

NOTE: USE OFFICIAL DOCUMENTATION provided with R-Car BSPs FOR H3SK/M3SK boards

Yocto versions

Poky-2.1.3 is supported with Yocto v2.23.1.
Poky-2.4.2 is supported with Yocto v3.9.0.
Poky-2.4.3 is supported with Yocto v3.13.0, v3.15.0, v3.19.0, v3.21.0.
Specific commit of meta-openembedded is required.

Host PC

Yocto v2.x.y(Ex Yocto v2.23.1) : Ubuntu 14.04 LTS (64bit) is recommended as OS. 32bit version is not supported.
Yocto v3.x.y(Ex Yocto v3.21.0) : Ubuntu 16.04 LTS (64bit) is recommended as OS. 32bit version is not supported.

Preliminary steps

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/us/en/solutions/automotive/rcar-download/rcar-demoboard.html

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

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 cpio python python3 \
     python3-pip python3-pexpect xz-utils debianutils iputils-ping libssl-dev

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 python-crypto cpio python python3 python3-pip python3-pexpect \
     ghc-lzma-conduit iputils openssl

Refer to Yocto Project Quick Start for more information.

Building the BSP for Renesas H3 Starter Kit, M3 Starter Kit

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

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`
```

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

Switch to proper branches/commits

For Yocto v2.23.1

cd $WORK/poky
git checkout -b tmp yocto-2.1.3
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 7acbf5e2f99c59478adbc73c6a40d314589a3009

For Yocto v3.9.0

cd $WORK/poky
git checkout -b tmp 342fbd6a3e57021c8e28b124b3adb241936f3d9d
cd $WORK/meta-openembedded
git checkout -b tmp dacfa2b1920e285531bec55cd2f08743390aaf57
cd $WORK/meta-linaro
git checkout -b tmp 75dfb67bbb14a70cd47afda9726e2e1c76731885
cd $WORK/meta-renesas
git checkout -b tmp fd078b6ece537d986852cb827bd21e022a797b2f

For Yocto v3.13.0 (Note: https://elinux.org/R-Car/Boards/Yocto-Gen3#Known_issues_and_limitations (No.3))

cd $WORK/poky
git checkout -b tmp 7e7ee662f5dea4d090293045f7498093322802cc
cd $WORK/meta-openembedded
git checkout -b tmp 352531015014d1957d6444d114f4451e241c4d23
cd $WORK/meta-linaro
git checkout -b tmp 75dfb67bbb14a70cd47afda9726e2e1c76731885
cd $WORK/meta-renesas
git checkout -b tmp 00f70f062aace04c051fa92d3cd7b887718fc313

For Yocto v3.15.0 (Note: https://elinux.org/R-Car/Boards/Yocto-Gen3#Known_issues_and_limitations (No.4))

cd $WORK/poky
git checkout -b tmp 7e7ee662f5dea4d090293045f7498093322802cc
cd $WORK/meta-openembedded
git checkout -b tmp 352531015014d1957d6444d114f4451e241c4d23
cd $WORK/meta-linaro
git checkout -b tmp 75dfb67bbb14a70cd47afda9726e2e1c76731885
cd $WORK/meta-renesas
git checkout -b tmp 8af0b7d6e445b532088a068dc012757001be3a1f

For Yocto v3.19.0

cd $WORK/poky
git checkout -b tmp 7e7ee662f5dea4d090293045f7498093322802cc
cd $WORK/meta-openembedded
git checkout -b tmp 352531015014d1957d6444d114f4451e241c4d23
cd $WORK/meta-linaro
git checkout -b tmp 75dfb67bbb14a70cd47afda9726e2e1c76731885
cd $WORK/meta-renesas
git checkout -b tmp 20fcc94a8d05eda80250f27e87aaa3cfc3275300

For Yocto v3.21.0

cd $WORK/poky
git checkout -b tmp 7e7ee662f5dea4d090293045f7498093322802cc
cd $WORK/meta-openembedded
git checkout -b tmp 352531015014d1957d6444d114f4451e241c4d23
cd $WORK/meta-linaro
git checkout -b tmp 75dfb67bbb14a70cd47afda9726e2e1c76731885
cd $WORK/meta-renesas
git checkout -b tmp ad3a8cfee5b6a6fab17cf1c6e5af851eaec75bd7

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

Apply Linaro-GCC patch file:

For Yocto v2.23.1

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

Download proprietary driver modules to $WORK/proprietary folder.
You should see the following files:

For Yocto v2.23.1

$ ls -1 $WORK/proprietary/*.zip
R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-20170828.zip
R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-20170828.zip

For Yocto v3.9.0

$ ls -1 $WORK/proprietary/*.zip
R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-20180627.zip
R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-20180627.zip

For Yocto v3.13.0

$ ls -1 $WORK/proprietary/*.zip
R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-20181029.zip
R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-20181029.zip

For Yocto v3.15.0

$ ls -1 $WORK/proprietary/*.zip
R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-20181225.zip
R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-20181225.zip

For Yocto v3.19.0

$ ls -1 $WORK/proprietary/*.zip
R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-20190507.zip
R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-20190507.zip

For Yocto v3.21.0

$ ls -1 $WORK/proprietary/*.zip
R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-20190722.zip
R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-20190722.zip

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

Setup build environment
```
cd $WORK
source poky/oe-init-build-env
```

Prepare default configuration files.

For Yocto v2.23.1

cp $WORK/meta-renesas/meta-rcar-gen3/docs/sample/conf/<h3ulcb|m3ulcb>/linaro-gcc/mmp/*.conf ./conf/
cd $WORK/build
cp conf/local-wayland.conf conf/local.conf

For Yocto v3.9.0 or later

cp $WORK/meta-renesas/meta-rcar-gen3/docs/sample/conf/<h3ulcb|m3ulcb>/poky-gcc/mmp/*.conf ./conf/
cd $WORK/build
cp conf/local-wayland.conf conf/local.conf

(Edit $WORK/build/conf/local.conf to enable/disable graphics and multimedia proprietary drivers support)
Edit local.conf with evaluation packages requirements:
1. For Yocto v2.23.1 or later (to enable EVA_ prefix during packages install)
```
DISTRO_FEATURES_append = " use_eva_pkg"
```
Start the build
```
bitbake core-image-weston
```
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.

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-es1-h3ulcb.dtb
./tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb-4x2g.dtb
./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.

You can now proceed with running Yocto images

OpenCL support

The following page describes how to enable OpenCL and Caffe support: R-Car/Boards/Yocto-Gen3/OpenCL

Build SDK

After building BSP you may build SDK:

bitbake core-image-weston -c populate_sdk

After build finished the SDK installation script may be found in following path:

tmp/deploy/sdk/poky-glibc-x86_64-core-image-weston-aarch64-toolchain-*.sh

Install SDK by run the following command and follow instructions on the screen:

./tmp/deploy/sdk/poky-glibc-x86_64-core-image-weston-aarch64-toolchain-*.sh

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:

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
```

Copy Image and Image-r8a7795-h3ulcb.dtb (for ws2.0 silicon) and/or Image-r8a7795-h3ulcb-4x2g.dtb (for RTP0RC77951SKBX010SA03(DDR 8GiB)) and/or Image-r8a7795-es1-h3ulcb.dtb (for ws1.1) 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-es1-h3ulcb.dtb /srv/tftp/
cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb.dtb /srv/tftp/
cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb-4x2g.dtb /srv/tftp/

Fedora

cp $WORK/build/tmp/deploy/images/h3ulcb/Image /var/lib/tftpboot/
cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-es1-h3ulcb.dtb /var/lib/tftpboot/
cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb.dtb /var/lib/tftpboot/
cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb-4x2g.dtb /var/lib/tftpboot/

Which is my H3SK board WS2.0 or WS1.1?

Verify that TFTP server is working.

tftp localhost -c get Image && ls Image

Setup NFS server.

Debian/Ubuntu

Install necessary packages:

sudo apt-get install nfs-kernel-server nfs-common

Start NFS server:

sudo /etc/init.d/nfs-kernel-server start

Fedora

Install necessary packages:
```
sudo yum install nfs-utils
```

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

Export root FS to NFS. (Change IMAGE and MACHINE to fit your build).

Unpack rootfs to a dedicated directory:

IMAGE=weston
MACHINE=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

Edit /etc/exports:

sudo vi /etc/exports

add

/nfs/h3ulcb	*(rw,no_subtree_check,sync,no_root_squash,no_all_squash)
/nfs/m3ulcb	*(rw,no_subtree_check,sync,no_root_squash,no_all_squash)

Save the file and exit.

Force NFS server to re-read /etc/exports
```
sudo exportfs -a
```

Verify that NFS is working.

[builduser@buildmachine ~]$ showmount -e localhost
Export list for localhost:
/nfs/h3ulcb *
/nfs/m3ulcb *

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 for more information.

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.

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

Reset the board by pushing reset button
Refer to H3SK board page, M3SK board page for more information.

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. And Copy Image and Image-r8a7795-h3ulcb.dtb (for ws2.0 silicon) and/or Image-r8a7795-h3ulcb-4x2g.dtb (for RTP0RC77951SKBX010SA03(DDR 8GiB)) and/or Image-r8a7795-es1-h3ulcb.dtb (for ws1.1) from $WORK/build/tmp/deploy/images/h3ulcb/ to sd card /boot.

$ 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
$ cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-es1-h3ulcb.dtb /mnt/boot/
$ cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb.dtb /mnt/boot/
$ cp $WORK/build/tmp/deploy/images/h3ulcb/Image-r8a7795-h3ulcb-4x2g.dtb /mnt/boot/

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 rootwait'
# ext2load mmc 0:1 0x48080000 /boot/Image
# ext2load mmc 0:1 0x48000000 /boot/Image-r8a7795-h3ulcb.dtb
# booti 0x48080000 - 0x48000000

Note from user: When I created my image with mkfs.ext3, and booted with rootfstype=ext3, the kernel could not find mount the filesystem. The kernel boot gave an error message: "EXT4-fs (mmcblk1p1): couldn't mount as ext3 due to feature incompatibilities". I switched to 'rootfstype=ext4' in my bootargs, and the kernel booted OK.

Example of U-Boot environment variables:

baudrate=115200
bootargs_emmc=rw root=/dev/mmcblk0p1 rootwait
bootargs_nfs=rw root=/dev/nfs rootwait ip=dhcp
bootargs_sd0=rw root=/dev/mmcblk1p1 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

Build preparation
YOCTO_VERSION and META_VERSION must be changed depending your Yocto version.

#!/bin/sh

# Create a directory and switch to it
mkdir build
cd build
WORK=`pwd`
echo $WORK

# For Yocto v2.23.1
YOCTO_VERSION=yocto-2.1.3
META_VERSION=krogoth

# For Yocto v3.9.0
#YOCTO_VERSION=yocto-2.4.2
#META_VERSION=rocko

# For Yocto v3.13.0, v3.15.0, v3.19.0, v3.21.0
#YOCTO_VERSION=yocto-2.4.3
#META_VERSION=rocko

# Clone basic Yocto layers in parallel
git clone -b $YOCTO_VERSION --depth 1 git://git.yoctoproject.org/poky &
git clone -b $META_VERSION --depth 1 git://git.linaro.org/openembedded/meta-linaro.git &
git clone -b $META_VERSION --depth 1 git://git.openembedded.org/meta-openembedded &
git clone -b $META_VERSION --depth 1 git://github.com/renesas-rcar/meta-renesas &

# Wait for all clone operations
wait

# Apply Linaro-GCC patch file (The patch only adds README.linaro)
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

# Make sure proprietary driver modules are downloaded to $WORK/proprietary folder
# If the modules are not downloaded, copy_evaproprietary_softwares.sh warns it
# See https://www.renesas.com/en-us/solutions/automotive/rcar-demoboard.html (need to login!)
# $ ls -1 $WORK/proprietary/*.zip
# R-Car_Gen3_Series_Evaluation_Software_Package_for_Linux-20170828.zip
# R-Car_Gen3_Series_Evaluation_Software_Package_of_Linux_Drivers-20170828.zip

# Populate meta-renesas with proprietary software packages
cd $WORK/meta-renesas
sh meta-rcar-gen3/docs/sample/copyscript/copy_evaproprietary_softwares.sh -f $WORK/proprietary

Building yocto for H3ULCB board

For Yocto v2.23.1

#!/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

For Yocto v3.9.0 or later

#!/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/poky-gcc/bsp/*.conf ./conf/.
#cp $WORK/meta-renesas/meta-rcar-gen3/docs/sample/conf/h3ulcb/poky-gcc/gfx-only/*.conf ./conf/.
cp $WORK/meta-renesas/meta-rcar-gen3/docs/sample/conf/h3ulcb/poky-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

FAQ

Discussion site

http://elinux.org/Talk:R-Car/Boards/Yocto-Gen3

How do I increase USB bandwidth

Download:
M3SK File:M3v10 usb20 iso mode.zip
H3SK WS1.1 (RTP0RC7795SKBX0010SA00) File:H3v11 usb20 iso mode.zip
H3SK WS2.0 (RTP0RC77951SKBX010SA00) File:H3v20 usb20 iso mode.zip

Setting

<Install Driver>
$ modprobe qos
<Change directory to csv path>
$ cd /path_to_csv
<Store QoS parameters to QoS SRAM>
$ qos_tp setall file.csv
<Reflect Qos SRAM to QoS controller>
$ qos_tp switch

How do access to USB memory from U-boot(Yocto v3.13.0 or later)

Some USB memory may not be recognized.

=> usb start
starting USB...
USB0:   USB EHCI 1.10
scanning bus 0 for devices... EHCI timed out on TD - token=0x80008d80

      USB device not accepting new address (error=80000000)
1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found
=>

[How to fix] Set the "usb_pgood_delay 2000" variable

=> setenv usb_pgood_delay 2000
=> saveenv
=> reset
=> usb start

Known issues and limitations

[SW limitation] Yocto v3.4 or later doesn't support RTP0RC7795SKBX0010SA00(H3 v1.1 Starter Kit).
Please use the H3 v2.0 SK
[Known issue] If you encounter a kernel hang-up while using Yocto v3.4.0 or later, please refer to the following pages.
H3 SK: No.1 of https://elinux.org/R-Car/Boards/H3SK#Known_Issues
M3 SK: No.2 of https://elinux.org/R-Car/Boards/M3SK#Known_Issues

[SW limitations] Yocto v3.13.0

[U-boot]Reading environment variables from eMMC may fail.

Loading Environment from MMC... *** Warning - No block device, using default environment

[U-boot]SD SDR50/104 card may not be recognized.

Ex)
=> ext4ls mmc 0
timeout during DMA
timeout during DMA
timeout during DMA
timeout during DMA
timeout during DMA
error during DMA
** Unrecognized filesystem type **
=>

[Kernel] When using GStreamer, once playing audio at specific sampling rate, the audio with a different sampling rate cannot be played back. And some movie files cannot be played back.

Ex)
root@m3ulcb:~# gst-launch-1.0 filesrc location=sample.wav ! wavparse ! audioconvert ! alsasink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
[  273.920848] rcar_sound ec500000.sound: SSI parent/child should use same rate
[  273.927930] rcar_sound ec500000.sound: ssi[0] : prepare error -22
[  273.934055] rcar_sound ec500000.sound: ASoC: cpu DAI prepare error: -22
ERROR: from element /GstPipeline:pipeline0/GstAlsaSink:alsasink0: Could not get/set sett
ings from/on resource.
Additional debug info:
../../../gst-plugins-base-1.12.2/ext/alsa/gstalsasink.c(617): set_hwparams (): /GstPipel
ine:pipeline0/GstAlsaSink:alsasink0:
Unable to set hw params for playback: Invalid argument
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...
root@m3ulcb:~#

[SW limitations] Yocto v3.15.0
1. [U-boot]Reading environment variables from eMMC on M3 Starter Kit may fail.
```
communication out of sync
```
2. [U-boot]Reading environment variables from eMMC on H3 v2 Starter Kit may fail.
```
  Loading Environment from MMC... timeout during DMA
  *** Warning - !read failed, using default environment
```
  Workaround patch: https://github.com/u-boot/u-boot/commit/f58d6771a2afad71594c1264aadde461210a4675
  U-boot binary File:U-boot-elf-h3ulcb-WA.zip

R-Car/Boards/Yocto-Gen3/v3.21.0

Contents

Yocto versions

Host PC

Preliminary steps

Ubuntu and Debian

Fedora

Building the BSP for Renesas H3 Starter Kit, M3 Starter Kit

OpenCL support

Build SDK

Running Yocto images

Loading kernel via TFTP and rootfs via NFS

Ubuntu

Fedora

Ubuntu

Fedora

Debian/Ubuntu

Fedora

How to prepare and boot from eMMC/SD card

Preparing eMMC/SD card

Configure U-Boot to boot from SD card

Build scripts examples

FAQ

Discussion site

How do I increase USB bandwidth

How do access to USB memory from U-boot(Yocto v3.13.0 or later)

Known issues and limitations

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