VIA Technologies VAB-820 Development Manual

Brand: VIA Technologies

Model: VAB-820

Type: Development Manual

VIA Technologies VAB-820 is a development board equipped with an i.MX 6Quad processor, including HDMI display capability, supporting various Linux distros. It has built-in 10/100 Ethernet, CAN bus, USB, and 4 COM ports for diverse industrial applications.

1.06-11172015-163300

DEVELOPMENT GUIDE

VAB-820

HMI Solution Pack v2.0

No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language,

in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise without the prior written

permission of VIA Technologies, Incorporated.

Trademarks

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Disclaimer

VIA Technologies makes no warranties, implied or otherwise, in regard to this document and to the products described in this

document. The information provided in this document is believed to be accurate and reliable as of the publication date of this

document. However, VIA Technologies assumes no responsibility for the use or misuse of the information in this document and for

any patent infringements that may arise from the use of this document. The information and product specifications within this

document are subject to change at any time, without notice and without obligation to notify any person of such change.

VIA Technologies, Inc. reserves the right the make changes to the products described in this manual at any time without prior

notice.

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iii

Revision History

Version

VersionVersion

Version

Date

DateDate

Date

Remarks

RemarksRemarks

Remarks

1.00 2015/1/30 Initial released.

1.01 2015/2/16 Changed the eMMC's index from 1 to 0, sdcard's index from 0 to 1.

Added notice to unmount partitions before flashing images to

SD/eMMC.

1.02 2015/2/17

Changed u-boot.bin to u-boot.imx.

Used EVK to flash images to SD/eMMC.

1.03 2015/8/12 Added section 4.2.2 and 4.2.3

1.04 2015/8/20 Corrected u-boot to U-boot

1.05 2015/9/2 Changed the way of U-boot booting kernel

1.06 2015/11/17

Changed document cover from AMOS-820 VAB-820 HMI Solution

Pack to VAB-820 HMI Solution Pack.

Modified some descriptions for VAB-820

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Table of Contents

1.1.

Introduction

IntroductionIntroduction

Introduction ................................

................................................................

..........................................

....................

.......... 1

1.1.

Overview........................................................................................................ 1

1.2.

Package Content ........................................................................................... 1

1.2.1.

BSP Folder Contents............................................................................... 2

1.2.2.

EVK Folder Contents .............................................................................. 2

2.2.

Setup Building Environment

Setup Building EnvironmentSetup Building Environment

Setup Building Environment ................................

................................................................

...............................................

..............................

............... 3

2.1.

Configure Ubuntu......................................................................................... 3

2.1.1.

Install the Host Packages ...................................................................... 3

3.3.

Image Build

Image BuildImage Build

Image Build................................

................................................................

...........................................

......................

........... 4

3.1

Extract VAB-820 BSP......................................................................................... 4

3.2

Machine configurations .................................................................................... 4

3.3

Build an image.................................................................................................... 4

4.4.

Image Deployment

Image DeploymentImage Deployment

Image Deployment ................................

................................................................

..............................................................

............................................................

.............................. 5

4.1

Booting from Micro SD card ........................................................................... 5

4.1.1

Making a Micro SD card image ............................................................ 6

4.1.1

Setup U-boot parameters for Micro SD card ................................... 6

4.2

Booting from SPI ROM ..................................................................................... 7

4.2.1

Making Linux System eMMC................................................................. 7

4.2.1.1

Requirements................................................................................. 7

4.2.1.2

Burn u-boot.imx into SPI ROM .................................................. 9

4.2.1.3

Copy images to eMMC................................................................ 9

4.2.2

Setup U-boot parameters for SPI ROM.............................................. 9

4.3

Restore the default U-boot parameter....................................................... 12

Appendix A.

Appendix A.Appendix A.

Appendix A. U

U U

U-

-boot parameters for display

boot parameters for displayboot parameters for display

boot parameters for display ................................

................................................................

..........................................................

....................................................

.......................... 13

1313

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Lists of Figures

Figure 1 J11 boot select jumper diagram................................................................... 5

Figure 2 U-boot parameter ............................................................................................ 6

Figure 3 J11 boot select jumper diagram................................................................... 8

Figure 4 J11 boot select jumper diagram................................................................. 10

Figure 5 U-boot parameter .......................................................................................... 11

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Lists of Tables

Table 1 VAB-820 Solution Pack content .................................................................... 1

Table 2 Images generated through Bitbake ............................................................... 4

Table 3 J11 boot select jumper setting ...................................................................... 5

Table 4 J11 boot select jumper setting ...................................................................... 8

Table 5 J11 boot select jumper setting .................................................................... 10

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1.1.

1. Introduction

IntroductionIntroduction

Introduction

The purpose of this document is to provide a practical introduction on

developing software for the VAB-820 (Freescale i.MX6 Quad) on a Yocto

Project development host.

1.1. Overview

VAB-820 HMI SP v2.0 is developed based on fsl-yocto-3.10.17_1.0.0 (Yocto

1.5 Dora) and it enables hardware features.

There are four major boot components for Linux, the “

““

“u

-boot

bootboot

boot”

””

”,

, ,

, “

““

“*.dts

*.dts*.dts

*.dts”

””

”,

, ,

“

““

“uImage

uImageuImage

uImage”

””

” and “

““

“Root File System

Root File SystemRoot File System

Root File System”

””

”. The "u

"u"u

"u-

-boot"

boot"boot"

boot" is for initial peripheral hardware

parameter. The “

““

“*.dts

*.dts*.dts

*.dts”

””

” is the device tree. The "uImage"

"uImage""uImage"

"uImage" is the Linux kernel

image, and the "

"Root

Root Root

Root File System"

File System"File System"

File System" is for Linux O.S.

1.2. Package Content

There are three folders in VAB-820 Solution Pack.

BSP folder

BSP folderBSP folder

BSP folder

Description

DescriptionDescription

Description

yocto-vab820-bsp-v2.0.7.tar.bz2 Source code

Document

DocumentDocument

Document folder

folder folder

folder

Descr

DescrDescr

Description

iptioniption

iption

VAB-820_HMI_SP_V2.0.7_Development Guide_1.06.pdf Development Guide

VAB-820_HMI_SP_V2.0.7_Evaluation_Guide_1.03.pdf Evaluation Guide

EVK folder

EVK folderEVK folder

EVK folder

Description

DescriptionDescription

Description

u-boot.imx U-Boot boot loader

uImage Kernel

uImage-imx6q-vab820.dtb

uImage-imx6dl-vab820.dtb

Device tree

via-image-x11-imx6qvab820.sdcard An SD card image

modules-imx6qvab820.tgz All modules drivers

Table

Table Table

Table 1

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820820

820

Solution P

Solution PSolution P

Solution Pack content

ack contentack content

ack content

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1.2.1. BSP Folder Contents

• vab820

vab820vab820

vab820-

-ycoto

ycotoycoto

ycoto-

-bsp

bspbsp

bsp-

-v2.0.7.tar.bz2:

v2.0.7.tar.bz2:v2.0.7.tar.bz2:

v2.0.7.tar.bz2: A complete and static Yocto BSP

including VAB-820 meta-files, and all the required packages have

been downloaded.

1.2.2. EVK Folder Contents

• via

viavia

via-

-image

imageimage

image-

-x11

x11x11

x11-

-imx6qvab820.sdcard:

imx6qvab820.sdcard:imx6qvab820.sdcard:

imx6qvab820.sdcard: Image for evaluating the VAB-820

with OpenEmbedded file system.

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2.2.

2. Setup Building Environment

Setup Building Environment Setup Building Environment

Setup Building Environment

This chapter will guide users through setting up the developing environment.

All the instructions in this guide are for Ubuntu 12.04 (32 Bit or 64 Bit). Please

have the Ubuntu installed in the PC/NB in advance.

To get the Yocto Project expected behavior in a Linux Host Machine, the

packages and utilities described below must be installed. An important

consideration is hard disk space required in the host machine. The

recommended space is 120 GB at least.

2.1. Configure Ubuntu

2.1.1. Install the Host Packages

The following packages are installed to support Yocto development

environment and presented in a bash script that can be cut and pasted into the

environment for execution:

#/bin/bash

# Install LTIB dependant packages

sudo apt-get install wget git-core unzip texinfo libsdl1.2-dev gawk

diffstat build-essential chrpath

sudo apt-get install sed cvs subversion coreutils texi2html docbook-

utils python-pysqlite2 help2man make gcc g++ desktop-file-utils

libgl1-mesa-dev libglu1-mesa-dev mercurial autoconf automake groff

curl lzop asciidoc xterm

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3.3.

Image Build

mage Buildmage Build

mage Build

3.1 Extract VAB-820 BSP

Do not use the root mode to unpack the BSP package on the terminal. It may

cause a failure to build due to the file permission has been affected.

$ tar xvf yocto-vab820-bsp-v2.0.7.tar.bz2

3.2 Machine configurations

The via-setup-release.sh script integrates the VIA release layer into the Yocto

Project build by inserting the layer into the <build dir>/conf/bblayers.conf file.

This setup script has the following optional parameters:

• -b: sets the build directory.

-b <build dir >

$ cd via-release-bsp

via-release-bsp$ MACHINE=imx6qvab820 source via-setup-release.sh -b

build-vab820

3.3 Build an image

VAB-820 BSP supports 'via-image-x11' image name.

via-release-bsp/build-vab820$ bitbake via-image-x11

There are u-boot.imx, uImage, *.dts and root file system generated. The

location for this example can be found in the directory “via

“via“via

“via-

-release

releaserelease

release-

-bsp/build

bsp/buildbsp/build

bsp/build-

vab820

vab820vab820

vab820/

/tmp/deploy/images/imx6qvab820”

tmp/deploy/images/imx6qvab820”tmp/deploy/images/imx6qvab820”

tmp/deploy/images/imx6qvab820” as shown in Table 2.

Binary

BinaryBinary

Binary

Description

DescriptionDescription

Description

u-boot.imx U-Boot boot loader

uImage Kernel

uImage-imx6q-vab820.dtb

uImage-imx6dl-vab820.dtb

Device tree

via-image-x11-imx6qvab820.sdcard An SD card image

Table

Table Table

Table 2

2 Images generated through

Images generated through Images generated through

Images generated through Bitbake

BitbakeBitbake

Bitbake

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4.4.

Image Deployment

Image DeploymentImage Deployment

Image Deployment

VAB-820 supports two booting ways. One is from Micro SD storage card and

the other is SPI ROM. This section will guide users through making the Linux

system boot media for VAB-820.

Users could use the image built from BSP, its location is mentioned in the

previous Section 3.3, or use the demo image in EVK/

EVK/ EVK/

EVK/ folder of VAB-820 HMI

Solution Pack.

4.1 Booting from Micro SD card

The Micro SD card image provides the full system to boot with U-Boot and

kernel.

If users setup the U-boot parameter for the first time, users need to boot from

the Micro SD card. Set the J11 jumper setting (refer to Figure 1 and Table 3) to

boot from the Micro SD.

Figure

Figure Figure

Figure 1

1 J11 boot select jumper diagram

J11 boot select jumper diagram J11 boot select jumper diagram

J11 boot select jumper diagram

Setting

SettingSetting

Setting

Pin 1

Pin 1 Pin 1

Pin 1 -

- 2

2 2

Pin 2

Pin 2 Pin 2

Pin 2 -

- 3

3 3

Micros SD (default) Short Open

SPI Open Short

Table

Table Table

Table 3

3 J

J J

J11

1111

boot select

boot select boot select

boot select jumper setting

jumper settingjumper setting

jumper setting

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4.1.1 Making a Micro SD card image

Be careful of the following instructions before making Micro SD card image:

If there is any mounted partition in Micro SD card, it should be unmounted

first. Then, to flash a Micro SD card image, run the following command:

$ umount /dev/sd<partition>

$ sudo dd if=via-image-x11-imx6qvab820.sdcard of=/dev/sd<partition>

bs=1M && sync

4.1.1 Setup U-boot parameters for Micro SD card

Connect the VAB-820 and host PC through J5 (COM2) of VAB-820. Run serial

port communications program (GtkTerm, Minicom…..) on host PC to receive

the booting message. Power on the VAB-820 and press any key to stop the

booting process as shown in Figure 2.

Figure

Figure Figure

Figure 2

2 U

U U

U-

-boot parameter

boot parameterboot parameter

boot parameter

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To check the parameter in U-boot:

VAB-820 U-Boot > priintenv

bootcmd=run bootcmd_auto

...

The default parameter shows that it loads kernel by detecting the Micro SD

card. If the Micro SD card has been inserted, it loads kernel from Micro SD

card. If not, it loads kernel from eMMC.

If users would like to change loading kernel from Micro SD card or eMMC,

users could refer to the two examples below.

The VAB-820 will load kernel from Micro SD card.

VAB-820 U-Boot > setenv bootcmd 'run bootcmd_sd'

VAB-820 U-Boot > saveenv

VAB-820 U-Boot > boot

The VAB-820 will load kernel from eMMC.

VAB-820 U-Boot > setenv bootcmd 'run bootcmd_mmc'

VAB-820 U-Boot > saveenv

VAB-820 U-Boot > boot

4.2 Booting from SPI ROM

VAB-820 supports booting from SPI ROM, loading kernel and Root FileSystem

from eMMC. It does not support booting from eMMC.

If users would like to make a Linux system on eMMC, users need to burn U-

boot on SPI ROM, and burn kernel and Root FileSystem on eMMC.

4.2.1 Making Linux System eMMC

If users use VAB-820 first, users must boot from Micro SD card and run the

following steps.

4.2.1.1

4.2.1.14.2.1.1

4.2.1.1 R

Requirements

equirementsequirements

equirements

• A Linux System Micro SD storage card made in Section 4.1.

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• A mass storage includes: “

““

“u

-boot.imx

boot.imxboot.imx

boot.imx”

””

”

and “

““

“via

viavia

via-

-image

imageimage

image-

-x11

x11x11

x11-

imx6qvab820.sdcard

imx6qvab820.sdcardimx6qvab820.sdcard

imx6qvab820.sdcard”

””

”. Users could put those files in a USB flash or

Micro SD storage card.

• Set the J11 jumper setting (refer to Figure 3 and Table 4) to boot from

Micro SD.

Figure

Figure Figure

Figure 3

3 J11 boot select jumper diagram

J11 boot select jumper diagram J11 boot select jumper diagram

J11 boot select jumper diagram

Setting

SettingSetting

Setting

Pin 1

Pin 1 Pin 1

Pin 1 -

- 2

2 2

Pin 2

Pin 2 Pin 2

Pin 2 -

- 3

3 3

Micros SD (default) Short Open

SPI Open Short

Table

Table Table

Table 4

4 J

J J

J11

1111

boot select

boot select boot select

boot select jumper setting

jumper settingjumper setting

jumper setting

Connect the VAB-820 and host PC through J5 (COM2) of VAB-820. Run serial

port communications program (GtkTerm, Minicom…..) on host PC to receive

the booting message. Power on the VAB-820 and boot from Micro SD card

into system.

...

Poky (Yocto Project Reference Distro) 1.5.1 imx6qvab820 /dev/ttymxc1

imx6qvab820 login:root

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4.2.1.2

4.2.1.24.2.1.2

4.2.1.2 Burn

Burn Burn

Burn u

-boot.imx into SPI RO

boot.imx into SPI ROboot.imx into SPI RO

boot.imx into SPI ROM

Run “ls /dev/mtdblock*

/mtdblock*/mtdblock*

/mtdblock*” to check the SPI ROM device, which is identified as

“

““

“/dev/mtdblock0

/dev/mtdblock0/dev/mtdblock0

/dev/mtdblock0”

””

”.

$ ls /dev/mtdblock*

/dev/mtdblock0

Run the following command to burn u-boot.imx into SPI ROM.

$ sudo dd if=u-boot.imx of=/dev/mtdblock0 bs=512 seek=2

The previous U-boot parameters will be stored in SPI ROM. If users want to

clear the U-boot parameters to default values, use the following command:

$ sudo dd if=/dev/zero of=/dev/mtdblock0 bs=512 seek=1536 count=16

4.2.1.3

4.2.1.34.2.1.3

4.2.1.3 Copy

Copy Copy

Copy images to eMMC

images to eMMCimages to eMMC

images to eMMC

Be careful of the following instructions before copying images to eMMC:

If there is any mounted partition in eMMC, it should be unmounted first.

Then, run the following command to burn the image into eMMC.

$ sudo dd if=via-image-x11-imx6qvab820.sdcard of=/dev/mmcblk0 bs=1M

4.2.2 Setup U-boot parameters for SPI ROM

Setup the U-boot parameter at the first time we boot from SPI ROM. Set the

J11 jumper setting (refer to Figure4 and Table 5) to make it bootable from SPI

ROM.

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Figure

Figure Figure

Figure 4

4 J11 boot select jumper diagram

J11 boot select jumper diagram J11 boot select jumper diagram

J11 boot select jumper diagram

Setting

SettingSetting

Setting

Pin 1

Pin 1 Pin 1

Pin 1 -

- 2

2 2

Pin 2

Pin 2 Pin 2

Pin 2 -

- 3

3 3

Micros SD (default) Short Open

SPI Open Short

Table

Table Table

Table 5

5 J

J J

J11

1111

boot select

boot select boot select

boot select jumper setting

jumper settingjumper setting

jumper setting

Connect the VAB-820 and host PC through J5 (COM2) of VAB-820. Run

“putty” on host PC to receive the booting message. Power on the VAB-820

and press any key to stop the booting process as shown in Figure 5.

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Figure

Figure Figure

Figure 5

U-

-boot parameter

boot parameterboot parameter

boot parameter

To check the parameter in U-boot:

VAB-820 U-Boot > priintenv

bootcmd=run bootcmd_auto

...

The default parameter shows that it loads kernel by detecting the Micro SD

card. If the Micro SD card has been inserted, it loads kernel from Micro SD

card. If not, it loads kernel from eMMC.

If users would like to change loading kernel from Micro SD card or eMMC,

users could refer to the two examples below.

The VAB-820 will load kernel from Micro SD card.

VAB-820 U-Boot > setenv bootcmd 'run bootcmd_sd'

VAB-820 U-Boot > saveenv

VAB-820 U-Boot > boot

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The VAB-820 will load kernel from eMMC.

VAB-820 U-Boot > setenv bootcmd 'run bootcmd_mmc'

VAB-820 U-Boot > saveenv

VAB-820 U-Boot > boot

4.3 Restore the default U-boot parameter

User could type “destroyenv” in U-boot to restore the default parameter.

VAB-820 U-Boot > destroyenv

VAB-820 U-Boot > reset

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Appendix A.

Appendix A.Appendix A.

Appendix A. U

U-

-boot parameters

boot parametersboot parameters

boot parameters

for d

for dfor d

for display

isplayisplay

isplay

Setting the display devices.

[HDMI]

[HDMI][HDMI]

[HDMI]

Users could check HDMI parameters in U-boot by typing “printenv”:

hdmi=video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24

...

o_hdmi=setenv output_display ${hdmi}

To set the HDMI as display output.

run o_hdmi

[LVDS]

[LVDS][LVDS]

[LVDS]

VAB-820 supports three LVDS types by default since v2.0.0.

• AUO 22” G220SVN01.0 (1680 x 1050)

• AUO 10.4” G104XVN01.0 (1024 x 768)

• AUO 7”G070VW01 V0 (800 x 480)

Users could check LVDS parameters in U-boot by typing “printenv”:

lvds_auo_g220=video=mxcfb0:dev=ldb,LDB-WSXGA+,if=RGB24 ldb=spl0

lvds_auo_g104=video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24 ldb=sin0

lvds_auo_g070=video=mxcfb0:dev=ldb,480C60,if=RGB666 ldb=sep0

lvds=video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24 ldb=sin0

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Check the LVDS power selection setting.

J3J3

: LVDS_power select of AUO 22

: LVDS_power select of AUO 22: LVDS_power select of AUO 22

: LVDS_power select of AUO 22”

””

”

G220SVN01.0

G220SVN01.0G220SVN01.0

G220SVN01.0

IVDD

IVDDIVDD

IVDD

PVDD

PVDDPVDD

PVDD

*1-3 +12V 2-4 +3.3V

3-5 +5V *4-6 +5V

J3 : LVDS_power select of AUO 10.4

J3 : LVDS_power select of AUO 10.4J3 : LVDS_power select of AUO 10.4

J3 : LVDS_power select of AUO 10.4”

””

”

G104XVN01.0

G104XVN01.0G104XVN01.0

G104XVN01.0

IVDD

IVDDIVDD

IVDD

PVDD

PVDDPVDD

PVDD

*1-3 +12V *2-4 +3.3V

3-5 +5V 4-6 +5V

J3 : LVDS_power select of AUO 7

J3 : LVDS_power select of AUO 7J3 : LVDS_power select of AUO 7

J3 : LVDS_power select of AUO 7”

””

”

G070VW01 V0

G070VW01 V0G070VW01 V0

G070VW01 V0

IVDD

IVDDIVDD

IVDD

PVDD

PVDDPVDD

PVDD

*1-3 +12V *2-4 +3.3V

3-5 +5V 4-6 +5V

Users could check LVDS setting parameters in U-boot by typing “printenv”:

o_lvdsg220=setenv output_display ${lvds_auo_g220}

o_lvdsg104=setenv output_display ${lvds_auo_g104}

o_lvdsg070=setenv output_display ${lvds_auo_g070}

Users could set the LVDS type in U-boot, the LVDS for this example is AUO

10.4” G104XVN01.0:

run o_lvdsg104

saveenv

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VIA Technologies VAB-820 Development Manual

VIA Technologies VAB-820 Development Manual

VIA Technologies VAB-820 Development Manual

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