arm linux minecraft,MCIMX6ULL-EVK

This is a page about the NXP based i.MX 6ULL ; MCIMX6ULL-EVK i.MX 6ULL Evaluation Kit.

Availability

Boards:

Vendor Documentation

Notes

Serial Console: thru USB connector next to power switch. J1901 (115200/8/1/N/N)

Boot from microSD J301 (on small base board)

SW602:

D1

D2

on

off

SW601:

D1

D2

D3

D4

off

off

on

off

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: GCC

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

Download/Extract:

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-

Test Cross Compiler:

user@localhost:~$

${CC}gcc --version

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.

Bootloader: U-Boot

Das U-Boot – the Universal Boot Loader:

user@localhost:~$

git clone https://github.com/u-boot/u-boot

cd u-boot/

git checkout v2019.04 -b tmp

Patches:

user@localhost:~/u-boot$

wget -c https://github.com/eewiki/u-boot-patches/raw/master/v2019.04/0001-mx6ull_14x14_evk-fixes.patch

patch -p1 < 0001-mx6ull_14x14_evk-fixes.patch

Configure and Build:

user@localhost:~/u-boot$

make ARCH=arm CROSS_COMPILE=${CC} distclean

make ARCH=arm CROSS_COMPILE=${CC} mx6ull_14x14_evk_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.

Download:

user@localhost:~$

git clone https://github.com/RobertCNelson/armv7-multiplatform

cd armv7-multiplatform/

For v4.14.x (Longterm 4.14.x):

user@localhost:~/armv7-multiplatform$

git checkout origin/v4.14.x -b tmp

For v4.14.x-rt (Longterm 4.14.x + Real-Time Linux):

user@localhost:~/armv7-multiplatform$

git checkout origin/v4.14.x-rt -b tmp

For v4.19.x (Longterm 4.19.x):

user@localhost:~/armv7-multiplatform$

git checkout origin/v4.19.x -b tmp

For v4.19.x-rt (Longterm 4.19.x + Real-Time Linux):

user@localhost:~/armv7-multiplatform$

git checkout origin/v4.19.x-rt -b tmp

For v5.0.x (Stable):

user@localhost:~/armv7-multiplatform$

git checkout origin/v5.0.x -b tmp

For v5.0.x-rt (Stable + Real-Time Linux):

user@localhost:~/armv7-multiplatform$

git checkout origin/v5.0.x-rt -b tmp

Build:

user@localhost:~/armv7-multiplatform$

./build_kernel.sh

Root File System

Debian 10

User

Password

debian

temppwd

root

root

Download:

user@localhost:~$

wget -c https://rcn-ee.com/rootfs/eewiki/minfs/debian-10.3-minimal-armhf-2020-02-10.tar.xz

Verify:

user@localhost:~$

sha256sum debian-10.3-minimal-armhf-2020-02-10.tar.xz

sha256sum output:

a6645dfb49795bbe809dfc3c2b7dff53ad4daab24a654edd29bab29ae007cc40 debian-10.3-minimal-armhf-2020-02-10.tar.xz

Extract:

user@localhost:~$

tar xf debian-10.3-minimal-armhf-2020-02-10.tar.xz

Ubuntu 18.04 LTS

User

Password

ubuntu

temppwd

Download:

user@localhost:~$

wget -c https://rcn-ee.com/rootfs/eewiki/minfs/ubuntu-18.04.3-minimal-armhf-2020-02-10.tar.xz

Verify:

user@localhost:~$

sha256sum ubuntu-18.04.3-minimal-armhf-2020-02-10.tar.xz

sha256sum output:

b28b356d75153bfb3beb5c96bf8eabe92025cf5e665e1a564b469bc70e5a363b ubuntu-18.04.3-minimal-armhf-2020-02-10.tar.xz

Extract:

user@localhost:~$

tar xf ubuntu-18.04.3-minimal-armhf-2020-02-10.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 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 /

sdb 8:16 1 962M 0 disk

└─sdb1 8:17 1 961M 0 part

Thus you would use:

export DISK=/dev/sdb

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 /

mmcblk0 179:0 0 962M 0 disk

└─mmcblk0p1 179:1 0 961M 0 part

Thus you would use:

export DISK=/dev/mmcblk0

Erase partition table/labels on microSD card:

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

Install Bootloader:

user@localhost:~$

sudo dd if=./u-boot/u-boot-dtb.imx of=${DISK} seek=2 bs=512

Create Partition Layout:

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

Check the version of sfdisk installed on your pc

sudo sfdisk --version

Example Output

sfdisk from util-linux 2.27.1

sfdisk >= 2.26.x

sudo sfdisk ${DISK} <

1M,,L,*

__EOF__

sfdisk <= 2.25.x

sudo sfdisk --unit M ${DISK} <

1,,L,*

__EOF__

Format Partition:

for: DISK=/dev/mmcblkX

sudo mkfs.ext4 -L rootfs ${DISK}p1

for: DISK=/dev/sdX

sudo mkfs.ext4 -L rootfs ${DISK}1

Mount Partition:

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

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.

-----------------------------

Script Complete

eewiki.net: [user@localhost:~$ export kernel_version=5.X.Y-Z]

-----------------------------

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.

export kernel_version=5.X.Y-Z

Copy Root File System

user@localhost:~$

sudo tar xfvp ./*-*-*-armhf-*/armhf-rootfs-*.tar -C /media/rootfs/

sync

sudo chown root:root /media/rootfs/

sudo chmod 755 /media/rootfs/

Set uname_r in /boot/uEnv.txt

user@localhost:~$

sudo sh -c "echo 'uname_r=${kernel_version}' >> /media/rootfs/boot/uEnv.txt"

Copy Kernel Image

Kernel Image:

user@localhost:~$

sudo cp -v ./armv7-multiplatform/deploy/${kernel_version}.zImage /media/rootfs/boot/vmlinuz-${kernel_version}

Copy Kernel Device Tree Binaries

user@localhost:~$

sudo mkdir -p /media/rootfs/boot/dtbs/${kernel_version}/

sudo tar xfv ./armv7-multiplatform/deploy/${kernel_version}-dtbs.tar.gz -C /media/rootfs/boot/dtbs/${kernel_version}/

Copy Kernel Modules

user@localhost:~$

sudo tar xfv ./armv7-multiplatform/deploy/${kernel_version}-modules.tar.gz -C /media/rootfs/

File Systems Table (/etc/fstab)

sudo sh -c "echo '/dev/mmcblk1p1 / auto errors=remount-ro 0 1' >> /media/rootfs/etc/fstab"

Remove microSD/SD card

sync

sudo umount /media/rootfs

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