Getting Started Guide for DM8148 EVM
Introduction
On this page you are going to find all the necessary information to start from scratch to use the RidgeRun SDK on your DM8148 evaluation module (EVM). In the following sections we assume that you have already downloaded the EZSDK version 5.05.02.00 and that you have installed the toolchain 2009q1-203 from codesourcery as well as your DM8148 SDK following the steps on The RidgeRun installation guide.
The first section of this guide shows you how to install the EZSDK for DM8148 on your computer and how to configure a TFTP and NFS server. Subsequently, the second section contains instructions about how to configure the RidgeRun's SDK to create a SD card with all software components (uboot, kernel and filesystem) needed to boot to Linux Shell in your EVM. Using this SD card in the third and fourth section of this guide, you will be able to install on NAND images created by the SDK for kernel, uboot as well as your filesystem (JFFS2, UBI, NFS are available). Using the SD card created on the second section to flash the SDK in your EVM is just an option because you could try to use the installer of the RidgeRun's SDK with the uboot version that is running by default in a new EVM, however, we cannot guaranty that it will work as we expect, hence, we recommend to use the SD card instead. Furthermore we describe how to enable the Graphics SDK support on the Professional SDK. Finally, how to run opemax demos to encode and decode 1080p/h264 videos and some pipelines using gstreamer + openMax are shown.
On the rest of this document, we refer as $(DEVDIR) to the path where the RidgeRun SDK for DM8148 is installed
Basic preliminary work
Installing the EZSDK
1. Set the ezsdk binary as executable and set correct permissions
sudo chmod 777 ezsdk_dm814x-evm_5_05_02_00_setuplinux
2. Install EZSDK. For ubuntu versions different than Ubuntu 10.04 LTS 32-bit you will need to add the --forcehost argument to install it:
./ezsdk_dm814x-evm_5_05_02_00_setuplinux --forcehost
note: During the EZSDK installation process you will be asked for the toolchain's path, assuming that you installed it on /opt, the path that you need to provide is /opt/codesourcery/arm-2009q1/bin/
OPTIONAL: Installing AAC encoder and MP3 Decoder
The DM81xx platforms have the ability to encode AAC-LC and decode MP3 on the DSP using openMax+gstreamer, however, these codecs are not in the EZSDK by default. The Ridgerun SDK for the DM8148/DM8168 has internal logic to integrate these codecs and generate a new DSP firmware if these codecs are installed properly in your host computer. This new DSP firmware will be automatically loaded by into the DSP during boot time.
1. Download the AAC-LC encoder from TI Web page, this is called AAC LC Encoder, Version 01.00.01.00
2. Download the MP3 decoder from TI Web page, this is called MP3 Decoder, Version 1.41.00.00
3. Install the AAC-LC encoder inside of your EZSDK directory, i.e, your destination directory must be something like /home/<user>/ti-ezsdk_dm814x-evm_5_05_02_00/component-sources/c674x_aaclcenc_01_00_01_00_elf
sudo chmod 777 c674x_aaclcenc_01_00_01_00_elf.bin ./c674x_aaclcenc_01_00_01_00_elf.bin
4. Install the MP3 decoder inside of your EZSDK directory, i.e, your destination directory must be something like /home/<user>/ti-ezsdk_dm814x-evm_5_05_02_00/component-sources/c674x_mp3dec_01_41_00_00_elf
sudo chmod 777 c674x_mp3dec_01_41_00_00_elf.bin ./c674x_mp3dec_01_41_00_00_elf.bin
5. Open a make config menu and select the Support external AAC and MP3 audio codecs option over the Proprietary software category.
cd $DEVDIR `make env` make config
note: If you built your SDK before to enable the audio support you need to remove the EZSDK tarball that were generated by the SDK in /opt/ridgerun/downloads thus the SDK will generate a new one including the audio codecs.
Setting up serial access to the Linux console
You use the serial port to control u-boot and Linux. The picocom terminal emulator work well for this purpose.
Setting up a TFTP server
If you are planning to use the SDK's installer to install images generated by the SDK in NAND, installing a TFTP server you will speed up downloads to the target hardware by using TFTP.
Setting up an NFS server
For application development, it is convenient to use root NFS mount file system for the target hardware. This allows you to rebuild your application on the host and immediately run the application on the target hardware with no interveining steps. You host PC needs to be configured as a NFS server for this in order to work properly.
Booting from a SD card
Setting up your EVM to boot from SD card
In order to boot from a SD card you need to set the MMC as the first boot device to try in the DM8148 boot sequence, this can be done configuring a correct BTMODE through the switch SW1 called BOOT MODE SEL in your EVM (see Fig. 1)
Configuring SDK to deploy firmware to a SD card
This section describes how to configure the DM8148's SDK to deploy all basic firmware components (kernel, uboot and MLO) into a bootable SD card. The RidgeRun SDK support several filesystem types (JFFS2, NFS, etc) however in this case we are going to use it on the SD card as well.
1. Set your environment variables
cd $(DEVDIR) `make env`
2. Open a make config menu
make config
running make config your SDK is going to download all basic packages needed by the SDK build system.
3. Go to Installer Configuration submenu and configure your installer as is shown in Fig.2
Using the Firmware deployment mode submenu you can set how to deploy your kernel, uboot and filesystem image into your target board. There are three options in this submenu: Attached board on communication port, Deploy all the firmware to an SD card and Create an SD card installer for flash memory.
- Attached board on communication port will allow you to send images to your target board using a serial port or a TFTP server, more details about this option are explained in the next section.
- Deploy all the firmware to an SD card tells to the installer that it must create the needed partitions on a SD card located in SD device on Linux host (please be sure that the option called Flash SD card image into loopback file instead of real SD is not selected) and that it have to install there the software's images generated by the SDK.
- Create an SD card installer for flash memory is going to create and SD card with all the logic and software's images needed to flash the EVM's NAND from the SD card.
4. Go to File System Configuration submenu and configure your filesystem as is shown in Fig.3
5. Compile your SDK
make
Installing SDK's firmware to a SD card
Once you have built your SDK, you need to install it on the SD card running make install, but before to issue this command you need to unmount your SD card, otherwise the SDK won't let you install it (in order to avoid to erase information in some of your hard disks). Let's suppose that the environment variable called $SDNAME contains your mount point's name (Normally if you press tab after umount /media/ it will complete it with you SD card name, if you have problems to find the name you can use commands like "df" or "mount" to verify it)
umount /media/$(SDNAME) cd $(DEVDIR) make install
you will be asked to confirm the device that you are going to partition and format, please enter yes if it is correct. After this, the SDK will start to create a bootable SD card
Now you are ready to test your SDK booting from a SD card. Two partitions were created by the SDK: boot partition which contains the kernel, uboot and MLO image and the rootfs partition with your file system. It's important to notice that the environment of uboot is located in a *.txt file in the partition called boot, which allows you to modify it easily.
Booting from NAND
This section describes how to configure the DM8148's SDK to install the SDK's firmware in NAND as well as how to set up your EVM to boot from NAND. First, we are going to start flashing uboot in NAND using the SD card created in the above section, once uboot is running properly from NAND, we can start installing the kernel and finally your filesystem.
Configuring SDK to install firmware in NAND
1. Set your environment variables
cd $(DEVDIR) `make env`
2. Open a make config menu
make config
3. Go to Installer Configuration submenu and configure your installer as is shown in Fig.4
In this case, you must use the Attached board on communication port method, this will allow you to install all your firmware directly in nand by means of a serial port or by ethernet using a TFTP server. Here we are going to use a TFTP server and telnet as our communication method with the target board.
3.1 Go to the Communication method with the target board and select Telnet-serial adaptor.
3.1.1 Configure the protocol to transfer images as TFTP
3.1.2 Set the IP address of your host machine in IP address of telnet-serial adaptor
3.1.3 Set the port number that you assigned in the telnet configuration file to the serial port where your EVM is connected in Network port of telnet-serial adaptor
3.2 (Alternative to point 3.1 - using Telnet-serial adaptor) Go to Communication method with the target board and select Serial
3.2.1 Set the Serial port for target communication
4. Close the make config menu and save your changes.
Configuring your Filesystem type
The RidgeRun SDK for DM8148 EVM supports different filesystem types: UBI, JFFS, NFS and also as we mentioned before you can use it in your SD card as well. In this tutorial we are going to use UBI as our default filesystem.
1. Set your environment variables
cd $(DEVDIR) `make env`
2. Open a make config menu
make config
3. Go to the File System Configuration->File system image target and choose UBIFS volume. Please be sure that UBIFS sub-page size is set to 512.
4. Save your changes and compile your SDK
make
Flashing uboot, kernel and filesystem in NAND
1.Boot the RidgeRun SDK using the SD card created in the first section of this guide and stop the uboot countdown. Close your Picocom, minicom or telnet session.
U-Boot 2010.06 (Sep 29 2011 - 12:23:57)
TI8148-GP rev 2.1
ARM clk: 600MHz
DDR clk: 400MHz
DRAM: 2 GiB
Using default environment
The 2nd stage U-Boot will now be auto-loaded
Please do not interrupt the countdown till TI8148_EVM prompt if 2nd stage is already flashed
Hit any key to stop autoboot: 0
mmc1 is available
reading u-boot.bin
185536 bytes read
## Starting application at 0x80800000 ...
U-Boot 2010.06 (Sep 30 2011 - 10:37:36)
TI8148-GP rev 2.1
ARM clk: 600MHz
DDR clk: 400MHz
I2C: ready
DRAM: 2 GiB
NAND: 256 MiB
*** Warning - booting from SD, using default environment
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Net: <ethaddr> not set. Reading from E-fuse
Detected MACID:90:d7:eb:c4:3f:b3
cpsw
Hit any key to stop autoboot: 0
TI8148_EVM#
2.Run make installbootloader to install uboot in NAND
make installbootloader
3.Turn off your EVM and configure it to boot from NAND (please see Setting up your EVM to boot from NAND). Turn on your EVM and repeat step 1.
4. Now, to install your kernel and filesytem run make install
make install
Now you have installed all the SDK components in your DM8148 EVM and you should be able to boot to Linux shell and see the logo of RigeRun on the HDMI output. The RidgeRun SDK for DM8148 EVM loads automatically all the firmware and kernel modules needed to use the video processor subsystem.
Setting up your DM8148 EVM to boot from NAND
In order to boot from a NAND you need to set it as the first boot device to try in the DM8148 boot sequence, this can be done configuring a correct BTMODE through the switch SW1 called BOOT MODE SEL in your EVM (see Fig. 5)
Graphics SDK - OpenGL - Qt
The Professional Ridgerun SDK includes Graphics SDK 4.04.00.02 completely integrated, supporting the SGX530 3D Graphics Engine through the PowerVR driver. It also includes support to use Qt to render through the PowerVR kernel module.
1. In order to enable the Graphics SDK in your SDK, please download and install in your home directory the Graphics SDK 4.04.00.02 from the TI web page
sudo chmod 777 Graphics_SDK_setuplinux_4_04_00_02.bin ./Graphics_SDK_setuplinux_4_04_00_02.bin
2.Then open a make config menu
cd $DEVDIR make config
3. Go to the Proprietary software and enable the graphics SDK.
4. Go to File System Configuration -> Select target's file system software -> qt-4.7.2 and select Support openGL and its demo. Finally disable the option called Make QT as compact as possible.
5. Close the menu, save your configuration and build your SDK.
cd $DEVDIR make
6. Install your SDK in your board
make install
7. Boot your board, you will see the following message
Starting System
done.
Welcome to
__________ .__ .___ __________
\______ \|__| __| _/ ____ ____ \______ \ __ __ ____
| _/| | / __ | / ___\ _/ __ \ | _/| | \ / \
| | \| |/ /_/ | / /_/ >\ ___/ | | \| | /| | \
|____|_ /|__|\____ | \___ / \___ >|____|_ /|____/ |___| /
\/ \//_____/ \/ \/ \/
Embedded Linux Solutions
For further information see:
http://www.ridgerun.com
Build host: dsoto-Latitude-E5430-non-vPro
Built by: dsoto
Build date: Fri, 17 May 2013 17:13:21 -0600
Build tag: dm8148-tievm
Configuring network interfaces
SGX revision: 0x10205
Build type: release6.x
Loaded PowerVR consumer services.
Please press Enter to activate this console.
8. Finally run one of the openGL demos or one of the qt + openGL demos
export LD_LIBRARY_PATH=/lib:/usr/lib:/usr/local/lib; export QWS_DISPLAY="powervr"; export QT_PLUGIN_PATH=/usr/plugins; export QT_QWS_FONTDIR=/usr/lib/fonts cd /opt/gxzsdkdemos/ogles2/ /opt/gfxsdkdemos/ogles2 # ./OGLES2Skybox2 PVRShell: EGL 1.4 initialized cd /examples/opengl/hellogl_es2 ./hellogl_es2
Note: Displaying openGL graphics on the LCD included on the EVM is not supported and the SDK by default will display them through HDMI
OpenMax Demos
To run the openMax's demos that are located by default in your filesystem in a directory called omx you need to run first the following commands in your EVM
Video initialization
echo 0 > /sys/devices/platform/vpss/graphics0/enabled echo 0 > /sys/devices/platform/vpss/graphics1/enabled echo 0 > /sys/devices/platform/vpss/graphics2/enabled
note: To run the decode display/encode demo with a 1080p video we recommend to use your filesystem by NFS due to the size of the input and output file.
Decode display demo
This demo is the decode-display demo included in the EZSDK. It takes an input file encoded in H264, decodes the stream and sends the output to the HDMI output
./omx/decode_display_a8host_debug.xv5T -i inputFile.h264 -w 1920 -h 1080 -f 60 -g 0
Capture encode demo
This demo is the capture-encode demo included in the EZSDK. It takes an input video streaming from the component input (case 720p) of the daughter card and encodes it in H264, the output is displayed through the HDMI output.
echo 720p-60 >/sys/devices/platform/vpss/display0/mode ./omx/capture_encode_a8host_debug.xv5T -o sample.h264 -m 720p -f 60 -b 1000000 -n 1000
Using Gstreamer
Some examples of use of GStreamer to implement basic multimedia pipelines can be found at Gstreamer pipelines for DM816x and DM814x. Please be aware that in order to display video you need to do the Video initialization
note: If you are not using the Ridgerun SDK and you are trying to use the TAG 00_06_00_00 provided by TI you will need to apply the following patch to make V4L2src and omxbufferalloc work.
Index: gst-openmax-dm81xx/src/omx/gstomxbufferalloc.c =================================================================== --- gst-openmax-dm81xx.orig/src/omx/gstomxbufferalloc.c 2012-11-14 16:15:41.392143697 -0600 +++ gst-openmax-dm81xx/src/omx/gstomxbufferalloc.c 2012-11-14 16:17:40.760145714 -0600 @@ -190,6 +190,7 @@ gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad); gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad); + filter->out_port.portptr = gst_omxportptr_new(&filter->out_port); filter->silent = FALSE; filter->out_port.num_buffers = 10; filter->out_port.always_copy = FALSE;
Linux Performance
There are performance issues that can be fixed tuning the Linux kernel. Here some interesting pages are listed with tuning solutions and tricks specially for memory lateness problems.