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1 de 30
END-TO-END SOFTWARE
PRODUCTION FOR
EMBEDDED
Guy Lunardi
2
More than one way to skin a
cat
3
So many tools today
●
Yocto, Poky, OpenEmbedded, meta-*
●
Buildroot
●
PTXdist
●
Linaro Image Tools (Ubuntu and Android)
●
Ubuntu Core
●
And another dozen ways...
4
Very basic product stack
App X App Y App Z
Library A Library B
Kernel
Hardware
Bootloader
5
Linux
Kernel
Library
A
Library
B
App
X
App
Y
GNU/Linux
Product 1
GNU/Linux
Product 2
GNU/Linux
Product 3
6
Why
Debian
based?
●
Over 25,000 Source packages [1]
● Over 10,000,000 source files [1]
● Over 77,000,000 CTAG symbols [1]
●
Over 900,000,000 Source lines of code [1]
[1] Stats based on Debian Stretch
7
Collabora’s preferred ways
8
9
10
debos
Debian OS builder
● YAML file as input
● Action-based
●
Easily extendable
● https://github.com/go-debos
11
Introducing debos
Example: arm64 image for Debian Stretch customized
●
debootstrap the image
● install the packages we need
● create an user
● setup our preferred hostname
● run a script creating an user
●
copy a file adding the user to sudoers
● creating a tarball with the final image
12
Debos
YAML
file
{{- $image := or .image "debian.tgz" -}}
architecture: arm64
actions:
- action: debootstrap
suite: "buster"
components:
- main
- non-free
mirror: https://deb.debian.org/debian
variant: minbase
- action: apt
packages: [ sudo, openssh-server, adduser,
systemd-sysv, firmware-linux ]
- action: run
chroot: true
command: echo debian > /etc/hostname
- action: pack
file: {{ $image }}
compression: gz
13
14
Fully enabled SDK VM
●
Identical source code to target images
●
Full toolchain available (including cross-compilation)
●
Emulator/Simulator (when available)
●
Integrated IDE/UI designer (when available)
●
Portable and easy to integrate in Customer IT environment
Easier application development
Develop within SDK Cross Compile in SDK
Develop
Compile
Test in
SDK
Develop
Cross
Compile
Deploy to
target
Package
Download
Package
(OBS)
Install
Develop
Test
16
17
And now some anecdotes
18
Datasheets and schematics
19
Diodes are hard
20
SPI flash
with 3.0v logic…
Or 3.3v logic
21
Transposed
USB D+ / D-
lines
22
What port?
23
Large
embedded
product
24
Embedded:
Full 42U rack
> 700Kgs
2-phase 220V
25
Password?
26
Password?No idea
27
Hurry and wait
28
Hurry and wait
29
And now your anecdotes
30
Thank you!

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