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This is a page about TI's Cortex-A8 based; PocketBeagle.

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{toc

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:indent

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Availability

Boards:
PocketBeagle at Digi-Key

Click Boards:
USB UART CLICK at Digi-Key
ETH CLICK at Digi-Key
ETH WIZ CLICK at Digi-Key
RTC CLICK at Digi-Key
RTC 5 CLICK at Digi-Key
RTC 6 CLICK at Digi-Key
MPU 9DOF CLICK at Digi-Key
WEATHER CLICK at Digi-Key
THUNDER CLICK at Digi-Key

Basic Requirements

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=disc}
 
h2. Availability
Boards:
[PocketBeagle|https://www.digikey.com/product-search/en?keywords=POCKETBEAGLE-SC-569-ND] at Digi-Key
 
Click Boards:
[USB UART CLICK|https://www.digikey.com/product-search/en?keywords=1471-1041-ND] at Digi-Key
[ETH CLICK|https://www.digikey.com/product-search/en?keywords=1471-1320-ND] at Digi-Key
[ETH WIZ CLICK|https://www.digikey.com/product-search/en?keywords=1471-1413-ND] at Digi-Key
[RTC CLICK|https://www.digikey.com/product-search/en?keywords=1471-1314-ND] at Digi-Key
[RTC 5 CLICK|https://www.digikey.com/product-search/en?keywords=1471-1493-ND] at Digi-Key
[RTC 6 CLICK|https://www.digikey.com/product-search/en?keywords=1471-1580-ND] at Digi-Key
[MPU 9DOF CLICK|https://www.digikey.com/product-search/en?keywords=1471-1460-ND] at Digi-Key
[WEATHER CLICK|https://www.digikey.com/product-search/en?keywords=1471-1487-ND] at Digi-Key
[THUNDER CLICK|https://www.digikey.com/product-search/en?keywords=1471-1115-ND] at Digi-Key
 
h2. Basic Requirements
* Running a recent supported release of Debian, Fedora or Ubuntu on a x86 64bit based PC; without OS Virtualization Software.
* Many of the listed commands assume /bin/bash as the default shell.
* ARM Cross Compiler -- Linaro: [https://www.linaro.org

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]
** Linaro Toolchain Binaries: [https://www.linaro.org/downloads/

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]
* Bootloader
** Das U-Boot

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 -- the Universal Boot Loader: [http://www.denx.de/wiki/U-Boot

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]
** Source: [https://github.com/u-boot/u-boot/

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]
* Linux Kernel

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** Linus's Mainline tree: [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

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]
* ARM based rootfs

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** Debian: [https://www.debian.org

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]
** Ubuntu: [https://www.ubuntu.com

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]
 
h2. ARM Cross Compiler: GCC

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This is a pre-built (64bit) version of GCC that runs on generic linux, sorry (32bit) x86 users, it's time to upgrade...

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Download/Extract:

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{code
:title
=user@localhost:~$
}
wget -c https://releases.linaro.org/components/toolchain/binaries/6.5-2018.12/arm-linux-gnueabihf/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf.tar.xz
tar xf gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf.tar.xz
export CC=`pwd`/gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
{code}
Test Cross Compiler:

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{code
:title
=user@localhost:~$
}
${CC}gcc --version
Code Block
titleTest Output:
{code}
{code:title=Test Output:}
arm-linux-gnueabihf-gcc (Linaro GCC 6.5-2018.12) 6.5.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
{code}
 
h2. Bootloader: U-Boot

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Das U-Boot

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 -- the Universal Boot Loader: [http://www.denx.de/wiki/U-Boot

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]
eewiki.net patch archive: [https://github.com/eewiki/u-boot-patches

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]
Download:

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{code
:title
=user@localhost:~$
}
git clone -b v2019.04 https://github.com/u-boot/u-boot --depth=1
cd u-boot/
git checkout v2019.04 -b tmp

Patches:

Code Block
title
{code}
Patches:
{code:title=user@localhost:~/u-boot$
}
wget -c https://github.com/eewiki/u-boot-patches/raw/master/v2019.04/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch
wget -c https://github.com/eewiki/u-boot-patches/raw/master/v2019.04/0002-U-Boot-BeagleBone-Cape-Manager.patch
 
patch -p1 < 0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch
patch -p1 < 0002-U-Boot-BeagleBone-Cape-Manager.patch
{code}
Configure and Build:

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{code
:title
=user@localhost:~/u-boot$
}
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} am335x_evm_defconfig
make ARCH=arm CROSS_COMPILE=${CC}

Linux Kernel

This script will build the kernel, modules, device tree binaries and copy them to the deploy directory.

TI BSP

Download:

Code Block
title~/
{code}
 
h2. Linux Kernel
This script will build the kernel, modules, device tree binaries and copy them to the deploy directory.
h3. TI BSP
Download:
{code:title=~/}
git clone https://github.com/RobertCNelson/ti-linux-kernel-dev.git
cd ti-linux-kernel-dev/
{code}
For TI v4.14.x:

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{code
:title
=~/ti-linux-kernel-dev/
}
git checkout origin/ti-linux-4.14.y -b tmp
{code}
For TI v4.14.x: Real-Time

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{code
:title
=~/ti-linux-kernel-dev/
}
git checkout origin/ti-linux-rt-4.14.y -b tmp
{code}
For TI v4.19.x:

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{code
:title
=~/ti-linux-kernel-dev/
}
git checkout origin/ti-linux-4.19.y -b tmp
{code}
For TI v4.19.x: Real-Time

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{code
:title
=~/ti-linux-kernel-dev/
}
git checkout origin/ti-linux-rt-4.19.y -b tmp
{code}
Build:

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{code
:title
=user@localhost:~/ti-linux-kernel-dev$
}
./build_kernel.sh

Root File System

Debian 10

User

Password

debian

temppwd

root

root

Download:

Code Block
titleuser@localhost:~$
{code}
 
h2. Root File System
h3. Debian 10
|| User || Password ||
| debian | temppwd |
| root | root |
Download:
{code:title=user@localhost:~$}
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/debian-10.34-minimal-armhf-2020-0205-10.tar.xz
{code}
 
Verify:

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{code
:title
=user@localhost:~$
}
sha256sum debian-10.34-minimal-armhf-2020-0205-10.tar.xz
Code Block
titlesha256sum output:

a6645dfb49795bbe809dfc3c2b7dff53ad4daab24a654edd29bab29ae007cc40{code}
{code:title=sha256sum output:}
cd598e42850cbef87602bf15ee343abfbf0d8c6ba81028c741672b5f24263534  debian-10.34-minimal-armhf-2020-0205-10.tar.xz
{code}
 
Extract:

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{code
:title
=user@localhost:~$
}
tar xf debian-10.34-minimal-armhf-2020-0205-10.tar.xz

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{code}
 
h3. Ubuntu 20.04 LTS

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User

Password

ubuntu

temppwd

Download:

Code Block
titleuser@localhost:~$

|| User || Password ||
| ubuntu | temppwd |
Download:
{code:title=user@localhost:~$}
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/ubuntu-1820.04.3-minimal-armhf-2020-0205-10.tar.xz
{code}
 
Verify:

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{code
:title
=user@localhost:~$
}
sha256sum ubuntu-1820.04.3-minimal-armhf-2020-0205-10.tar.xz
Code Block
titlesha256sum output:

b28b356d75153bfb3beb5c96bf8eabe92025cf5e665e1a564b469bc70e5a363b{code}
{code:title=sha256sum output:}
de0177ac9259fdbcc626ee239f4258b64070c0921dbc38c45fab6925a5becaa1  ubuntu-1820.04.3-minimal-armhf-2020-0205-10.tar.xz
{code}
 
Extract:

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{code
:title
=user@localhost:~$
}
tar xf ubuntu-1820.04.3-minimal-armhf-2020-0205-10.tar.xz

Setup microSD card

We need to access the External Drive to be utilized by the target device. Run lsblk to help figure out what linux device has been reserved for your External Drive.

Example: for
Code Block
title
{code}
 
h2. Setup microSD card
We need to access the External Drive to be utilized by the target device. Run lsblk to help figure out what linux device has been reserved for your External Drive.
{code:title=Example: for DISK=/dev/sdX
}
lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 465.8G  0 disk
├─sda1   8:1    0   512M  0 part /boot/efi
└─sda2   8:2    0 465.3G  0 part /                <- Development Machine Root Partition
sdb      8:16   1   962M  0 disk                  <- microSD/USB Storage Device
└─sdb1   8:17   1   961M  0 part                  <- microSD/USB Storage Partition
Code Block
titleThus you would use:
{code}
{code:title=Thus you would use:}
export DISK=/dev/sdb
Code Block
title
{code}
{code:title=Example: for DISK=/dev/mmcblkX
}
lsblk
NAME      MAJ:MIN   RM   SIZE RO TYPE MOUNTPOINT
sda         8:0      0 465.8G  0 disk
├─sda1      8:1      0   512M  0 part /boot/efi
└─sda2      8:2      0 465.3G  0 part /                <- Development Machine Root Partition
mmcblk0     179:0    0   962M  0 disk                  <- microSD/USB Storage Device
└─mmcblk0p1 179:1    0   961M  0 part                  <- microSD/USB Storage Partition
Code Block
titleThus you would use:
{code}
{code:title=Thus you would use:}
export DISK=/dev/mmcblk0

...

{code}
 
Erase partition table/labels on microSD card:

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{code
}
sudo dd if=/dev/zero of=${DISK} bs=1M count=10

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{code}
 
Install Bootloader:

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{code
:title
=user@localhost:~$
}
sudo dd if=./u-boot/MLO of=${DISK} count=1 seek=1 bs=128k
sudo dd if=./u-boot/u-boot.img of=${DISK} count=2 seek=1 bs=384k
{code}
Create Partition Layout:

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With util-linux v2.26, sfdisk was rewritten and is now based on libfdisk.

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sfdisk sfdisk

{code
:title
=Check the version of sfdisk installed on your pc
}
sudo sfdisk --version
Code Block
titleExample Output
{code}
{code:title=Example Output}
sfdisk from util-linux 2.27.1
Code Block
title
{code}
{code:title=sfdisk >= 2.26.x
}
sudo sfdisk ${DISK} <<-__EOF__
4M,,L,*
__EOF__
Code Block
title
{code}
{code:title=sfdisk <= 2.25.x
}
sudo sfdisk --unit M ${DISK} <<-__EOF__
4,,L,*
__EOF__

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{code}
 
Format Partition:

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{code
}
for: DISK=/dev/mmcblkX
sudo mkfs.ext4 -L rootfs ${DISK}p1
 
for: DISK=/dev/sdX
sudo mkfs.ext4 -L rootfs ${DISK}1
{code}
Mount Partition:

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*On most systems these partitions may be auto-mounted...

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*
{code
}
sudo mkdir -p /media/rootfs/
 
for: DISK=/dev/mmcblkX
sudo mount ${DISK}p1 /media/rootfs/
 
for: DISK=/dev/sdX
sudo mount ${DISK}1 /media/rootfs/

Install Kernel and Root File System

To help new users, since the kernel version can change on a daily basis. The kernel building scripts listed on this page will now give you a hint of what kernel version was built.

Code Block
{code}
 
h2. Install Kernel and Root File System
To help new users, since the kernel version can change on a daily basis. The kernel building scripts listed on this page will now give you a hint of what kernel version was built.
{code}
-----------------------------
Script Complete
eewiki.net: [user@localhost:~$ export kernel_version=5.X.Y-Z]
-----------------------------

...

{code}
 
Copy and paste that "export kernel_version=5.X.Y-Z" exactly as shown in your own build/desktop environment and hit enter to create an environment variable to be used later.

...


{code
}
export kernel_version=5.X.Y-Z

Copy Root File System

Code Block
title
{code}
 
h3. Copy Root File System
{code:title=user@localhost:~$
}
sudo tar xfvp ./*-*-*-armhf-*/armhf-rootfs-*.tar -C /media/rootfs/
sync
sudo chown root:root /media/rootfs/
sudo chmod 755 /media/rootfs/

...

{code}
 
h3. Set uname_r in /boot/uEnv.txt

...


{code
:title
=user@localhost:~$
}
sudo sh -c "echo 'uname_r=${kernel_version}' >> /media/rootfs/boot/uEnv.txt"

Copy Kernel Image

Kernel Image:

Code Block
titleuser@localhost:~$
{code}
 
h3. Copy Kernel Image
Kernel Image:
{code:title=user@localhost:~$}
sudo cp -v ./ti-linux-kernel-dev/deploy/${kernel_version}.zImage /media/rootfs/boot/vmlinuz-${kernel_version}

Copy Kernel Device Tree Binaries

Code Block
title
{code}
 
h3. Copy Kernel Device Tree Binaries
{code:title=user@localhost:~$
}
sudo mkdir -p /media/rootfs/boot/dtbs/${kernel_version}/
sudo tar xfv ./ti-linux-kernel-dev/deploy/${kernel_version}-dtbs.tar.gz -C /media/rootfs/boot/dtbs/${kernel_version}/

Copy Kernel Modules

Code Block
title
{code}
 
h3. Copy Kernel Modules
{code:title=user@localhost:~$
}
sudo tar xfv ./ti-linux-kernel-dev/deploy/${kernel_version}-modules.tar.gz -C /media/rootfs/

...

{code}
 
h3. File Systems Table (/etc/fstab)

...

Code Block

{code:title=user@localhost:~/$}
sudo sh -c "echo '/dev/mmcblk0p1  /  auto  errors=remount-ro  0  1' >> /media/rootfs/etc/fstab"

Click Boards

{code}
 
h3. Click Boards
U-Boot can currently load up to 4 overlays thru /boot/uEnv.txt

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To load an overlay, remove the # and replace the fileX with the matching name.

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{code
}
#uboot_overlay_addr0=/lib/firmware/<file0>.dtbo
#uboot_overlay_addr1=/lib/firmware/<file1>.dtbo
#uboot_overlay_addr2=/lib/firmware/<file2>.dtbo
#uboot_overlay_addr3=/lib/firmware/<file3>.dtbo
Ethernet

ETH CLICK

{code}
 
h5. Ethernet
ETH CLICK
* bb-cape-overlays: (minimum version: 4.4.20170927.0-0rcnee1)

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* Kernel: (minimum version: 4.4/4.9/4.14)

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{code

...

:title

...

=ETH CLICK

...

}
PB-SPI0-ETH-CLICK.dtbo
PB-SPI1-ETH-CLICK.dtbo

...

ETH WIZ CLICK

{code}
 
ETH WIZ CLICK
* bb-cape-overlays: (minimum version: 4.4.20171005.0-0rcnee1)

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* Kernel: (minimum version: 4.4.91-ti-r133/4.9.53-ti-r67/4.14.0-rc3-ti-r2)

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{code

...

:title

...

=ETH WIZ CLICK

...

}
PB-SPI0-ETH-WIZ-CLICK.dtbo
PB-SPI1-ETH-WIZ-CLICK.dtbo

...

RTC

RTC CLICK

{code}
 
 
h5. RTC
RTC CLICK
* bb-cape-overlays: (minimum version: 4.4.20170928.1-0rcnee1)

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* Kernel: (minimum version: 4.4/4.9/4.14)

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{code

...

:title

...

=RTC CLICK

...

}
PB-I2C1-RTC-CLICK.dtbo
PB-I2C2-RTC-CLICK.dtbo

...

RTC 5 CLICK

{code}
 
RTC 5 CLICK
* bb-cape-overlays: (minimum version: 4.4.20171002.0-0rcnee1)

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* Kernel: (minimum version: 4.4/4.9/4.14)

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{code

...

:title

...

=RTC 5 CLICK

...

}
PB-SPI0-RTC-5-CLICK.dtbo
PB-SPI1-RTC-5-CLICK.dtbo

...

RTC 6 CLICK

{code}
 
RTC 6 CLICK
* bb-cape-overlays: (minimum version: 4.4.20170927.0-0rcnee1)

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* Kernel: (minimum version: 4.4/4.9/4.14)

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{code

...

:title

...

=RTC 6 CLICK

...

}
PB-I2C1-RTC-6-CLICK.dtbo
PB-I2C2-RTC-6-CLICK.dtbo

...

Motion

MPU 9DOF CLICK

{code}
 
 
h5. Motion
MPU 9DOF CLICK
* bb-cape-overlays: (minimum version: 4.4.20171004.0-0rcnee1)

...


* Kernel: (minimum version: 4.14.0-rc3-ti-r1)

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{code

...

:title

...

=MPU 9DOF CLICK

...

}
PB-I2C1-MPU-9DOF-CLICK.dtbo
PB-I2C2-MPU-9DOF-CLICK.dtbo

...

Sensors

WEATHER CLICK

{code}
 
 
h5. Sensors
WEATHER CLICK
* bb-cape-overlays: (minimum version: 4.4.20171004.1-0rcnee1)

...


* Kernel: (minimum version: 4.4/4.9/4.14)

...


{code

...

:title

...

=WEATHER CLICK

...

}
PB-I2C1-WEATHER-CLICK.dtbo
PB-I2C2-WEATHER-CLICK.dtbo

...

THUNDER CLICK

{code}
 
THUNDER CLICK
* bb-cape-overlays: (minimum version: 4.4.20171004.2-0rcnee1)

...


* Kernel: (minimum version: 4.4/4.9/4.14)

...


{code

...

:title

...

=THUNDER CLICK

...

}
PB-I2C0-THUNDER-CLICK.dtbo
PB-I2C1-THUNDER-CLICK.dtbo

...

{code}
 
h3. Remove microSD/SD card

...


{code
}
sync
sudo umount /media/rootfs

Comments

...

{code}
 
h2. Comments
Any questions or comments please go to our TechForum: [TechForum|https://forum.digikey.com/c/linux-on-arm/]