Files
operating-system/buildroot/board/grinn/liteboard
Stefan Agner a0871be6c0 Bump buildroot to 2020.11-rc1 (#985)
* Update buildroot-patches for 2020.11-rc1 buildroot

* Update buildroot to 2020.11-rc1

Signed-off-by: Stefan Agner <stefan@agner.ch>

* Don't rely on sfdisk --list-free output

The --list-free (-F) argument does not allow machine readable mode. And
it seems that the output format changes over time (different spacing,
using size postfixes instead of raw blocks).

Use sfdisk json output and calculate free partition space ourselfs. This
works for 2.35 and 2.36 and is more robust since we rely on output which
is meant for scripts to parse.

* Migrate defconfigs for Buildroot 2020.11-rc1

In particular, rename BR2_TARGET_UBOOT_BOOT_SCRIPT(_SOURCE) to
BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT(_SOURCE).

* Rebase/remove systemd patches for systemd 246

* Drop apparmor/libapparmor from buildroot-external

* hassos-persists: use /run as directory for lockfiles

The U-Boot tools use /var/lock by default which is not created any more
by systemd by default (it is under tmpfiles legacy.conf, which we no
longer install).

* Disable systemd-update-done.service

The service is not suited for pure read-only systems. In particular the
service needs to be able to write a file in /etc and /var. Remove the
service. Note: This is a static service and cannot be removed using
systemd-preset.

* Disable apparmor.service for now

The service loads all default profiles. Some might actually cause
problems. E.g. the profile for ping seems not to match our setup for
/etc/resolv.conf:
[85503.634653] audit: type=1400 audit(1605286002.684:236): apparmor="DENIED" operation="open" profile="ping" name="/run/resolv.conf" pid=27585 comm="ping" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
2020-11-13 18:25:44 +01:00
..
2018-03-17 23:47:00 +00:00
2018-03-17 23:47:00 +00:00

*********
liteBoard
*********

Build
=====

First, configure Buildroot for your liteBoard:

  make grinn_liteboard_defconfig

Build image:

  make

After building you should get a tree like this:

  output/images/
  ├── boot.vfat
  ├── imx6ul-liteboard.dtb
  ├── rootfs.ext2
  ├── rootfs.ext4
  ├── rootfs.tar
  ├── sdcard.img
  ├── u-boot.imx
  └── zImage

Create a bootable microSD card
==============================

Buildroot prepares a bootable microSD card image "sdcard.img" in output/images/
directory, To flash SD card just run the following command:

  sudo dd if=output/images/sdcard.img of=/dev/<sd_card> bs=1M

where <sd_card> can be sdX or mmcblkX

*** WARNING! This will destroy all contents of device you specify! ***

Boot liteBoard
==============

- insert the microSD card in the microSD slot of the board;
- plug micro USB cable to provide power and console interface
- use terminal emulator with 115200 bps, 8n1