Linaro OpenEmbedded Engineering Build for Juno
You can find the latest ARM Member Build here:
License
The use of Juno software is subject to the terms of the Juno End User License Agreement.
Support
Please send any ARM support enquiries to juno-support@arm.com. Engineers at Linaro Members can receive support for Juno by sending support requests to support@linaro.org or visiting http://support.linaro.org.
Known Issues
Known Issues are managed in Bugzilla
License
The use of Juno software is subject to the terms of the Juno End User License Agreement.
Installation
Before any installation begins, it is important that you ensure your board has the latest firmware installed. See the Juno Firmware wiki for more details:
Pre-Installation Steps
- Ubuntu 12.04 64 bit or newer on your desktop PC (www.ubuntu.com)
- 4GB USB drive or larger
- Download the artifacts from the above list
Using pre-built image
- Unzip the downloaded pre-built image and write it to a USB drive
- Safely remove the USB drive and insert it into the board
Building a custom image using pre-built components
- Ubuntu 12.04 64 bit or newer on your desktop PC (www.ubuntu.com)
- Install Linaro image tools
- Create media
sudo linaro-media-create --mmc /dev/sdX --dev juno --hwpack <hwpack filename> --binary <rootfs filename>Post-installation steps
- Safely remove the USB drive and insert it into the board
- Configure UEFI
License
The use of Juno software is subject to the terms of the Juno End User License Agreement.
Building the Linaro Kernel
Prerequisites
- Ubuntu 12.04 64 bit system. You can download Ubuntu from ubuntu.com
- 13.11 Linaro aarch64 Linux GNU 4.8 toolchain
Get the Linaro Kernel Source
git clone https://git.linaro.org/landing-teams/working/arm/kernel-release.git
cd kernel-release
git checkout lsk-3.10-armlt-juno-20140724Create a kernel config
Do not use the arm64 defconfig, instead, build a config from the config fragments that Linaro provides:
ARCH=arm64 scripts/kconfig/merge_config.sh \
linaro/configs/linaro-base.conf \
linaro/configs/distribution.conf \
linaro/configs/vexpress64.conf \Note: the config fragments are part of the git repository and the source tarball.
Build the kernel
To build the kernel Image and juno.dtb files, use the following command:
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- Image dtbsInstall your kernel
Copy the kernel Image and the juno.dtb files to the BOOT partition on the USB drive created in the Binary Installation tab.
License
The use of Juno software is subject to the terms of the Juno End User License Agreement.
Juno ports
Back panel
Front panel
UARTs
There are 4 UARTs on the Juno board:
| UART | Location | Used by | Baud | Data bits | Stop bits | *Parity |
| SoC UART0 | back panel | The motherboard, UEFI and the Linux kernel. | 115200 | 8 | 1 | None |
| SoC UART1 | back panel | SCP firmware | 115200 | 8 | 1 | None |
| FPGA UART0 | Corresponds to the J55 header on the board. Please contact ARM for more information about this type of header. | AP Trusted Firmware | 115200 | 8 | 1 | None |
| FPGA UART1 | Corresponds to the J56 header on the board. Please contact ARM for more information about this type of header | Unused at the moment | - | - | - | - |
Quick Start
If you have just unpacked a new Juno board and would like to get it booting straight away, you may wish to skip ahead to the Set up and boot the Juno board section.
Juno software stack overview
There are several pieces of software that make up the complete Juno software stack, and a description of each one follows below.
Juno MCC Microcontroller Firmware
The MCC is a microcontroller on the motherboard that takes care of early setup before the SCP or applications processors are powered on. The MCC is also responsible for managing firmware upgrades.
System Control Processor (SCP) Firmware
The Juno System Control Processor (SCP) is an on-chip Cortex-M3 that provides low level power management and system control for the Juno platform.
Application Processor (AP) Trusted Firmware
The Juno AP Trusted Firmware provides low-level Trusted World support for the Juno platform.
Unified Extensible Firmware Interface (UEFI)
The Juno UEFI implementation provides Linux loader support for the Juno platform. It is based on the open source EFI Development Kit 2 (EDK2) implementation from the Tianocore sourceforge project.
Linux Kernel
The Linaro Stable Kernel (LSK) for Juno.
Linux filesystem
An Openembedded filesystem from Linaro can be mounted via USB (recommended) or NFS over Ethernet.
Android kernel and AOSP
The LSK image contains Android patches and has a unified defconfig, so the same kernel binary will work with a Linux filesystem or an AOSP filesystem (available from Linaro).
Software preloaded on new Juno boards
New Juno boards arrive preloaded with MCC firmware, SCP firmware, AP trusted firmware, UEFI, and a Linux kernel. The Juno board does not contain a Linux filesystem or Android AOSP filesystem anywhere in onboard storage.
Please note that early batches of Juno boards contained an SCP firmware image that limits the CPU clock to 50 MHz. ARM strongly recommends that you immediately upgrade to the latest firmware image hosted on this website by following the instructions in the section titled “Firmware update” on the Binary Image Installation tab.
When the power is first turned on, it should boot straight through to Linux. UEFI offers a 10 second window during which you can interrupt the boot sequence by pressing a key on the serial terminal, otherwise the Linux kernel will be launched. In order to reach the Linux shell you must attach a Linux filesystem via USB. If no filesystem is attached then Linux will boot as far as it can and then announce that it is waiting for a filesystem to be attached.
New Juno boards do not contain any Android software pre-installed.
Set up and boot the Juno board
You are strongly recommended to update to the latest firmware before doing anything productive with your Juno board.
The steps to set up and boot the board are:
- Connect a serial terminal to the UART0 connector (settings).
- Connect the 12 volt power, then press the red ON/OFF button on the back panel.
Getting Juno to boot to the Linux shell
If you have just received a new board and powered it on for the first time, you will not reach the Linux shell. Juno will boot Linux to the point where it looks for a filesystem, and when it can’t find one it will sit and wait for one to be attached. To boot all the way to the Linux shell you will need to attach a root filesystem.
Setting the Real Time Clock (required for Android)
New Juno boards do not have the correct time programmed into the real time clock. Some software (notably Android) will not operate correctly until a sensible time is programmed. To set the time, start a terminal session with UART0 connector (settings). Ensure there is power to the board, but the SoC must be powered off (if it is not, then press the black “Hardware Reset” button).
Execute the following:
ARM V2M-Juno Boot loader v1.0.0
HBI0262 build 596
ARM V2M_Juno Firmware v1.1.7
Build Date: May 27 2014
Time : 11:52:35
Date : 09:07:2060
Cmd> debug
Debug> date
09/07/2060
Change Date? Y\N >y
D:>23
M:>6
Y:>2014
Debug> time
15 : 51 : 58
Change Time? Y\N >y
s:>0
m:>08
h:>14
Debug>
Enabling Texture Compression Formats
The Mali GPU in Juno is able to use a variety of texture compression formats, many of which are subject to license from third parties. It is the responsibility of the end user to obtain a license for each texture that will be used on Juno. Once such licenses are obtained, the textures can be enabled by the following procedure:
1. Connect a serial terminal to the top 9-pin UART0 connector on the rear panel (115200 baud, 8, n, 1).
2. Connect a USB cable between the USB Configuration Port on the rear panel and a USB port of your host computer.
3. Connect the 12 volt power supply to the board.
The serial terminal will show the command prompt Cmd>
4. At the Cmd> prompt on the serial terminal, issue the command usb_on
Cmd> usb_onThe configuration flash memory should now be visible on the host computer as a mass storage device.
5. Open the file SITE1/HBI0262B/board.txt for editing.
6. Consult table 1 below to determine the correct value that should be programmed into the GPU texture format register to enable only the registers that you have licensed for use with Juno. To reset to factory settings, the value to program should be 0×00FE001E.
7. In the [SCC REGISTERS] section, below the “TOTALSCCS” line, insert the following line:
SCC: 0x05C <value from step 6 above> ;Optional comment to explain which texture you have enabled8. Update the TOTALSCCS count (increment it by one) so that it now reflects the total number of SCC registers that are programmed.
9. Press the red ON/OFF button on the rear panel of the board and wait for reprogramming to complete.
The board will load the default configuration and boot up.
Table 1. Bit mappings for the CONFIG_TEX_COMPRESSED_FORMAT_ENABLE register.
Please ensure you have obtained the appropriate license(s) before enabling these texture compression formats
| Bit | Texture compression format | Direct X 9 | DirectX 10 | DirectX 11 | OpenGL ES 1.1 | OpenGL ES 2.0 | OpenGL ES 3.0 | OpenGL 2.0 – 2.1 | OpenGL 3.0 – 3.1 | OpenGL 3.2 – 4.1 | OpenGL 4.2 |
| 0 | Invalid format | ||||||||||
| 1 | ETC2 | x[a] | x[a] | x | |||||||
| 2 | EAC, 1 component | x | |||||||||
| 3 | ETC2 + EAC | x | |||||||||
| 4 | EAC, 2 components | x | |||||||||
| 5 | Reserved | ||||||||||
| 6 | NXR | ||||||||||
| 7 | BC1_UNORM (DXT1) | x | x | x | x[b] | x[b] | x[b] | x[f] | x[f] | x[f] | x[f] |
| 8 | BC2_UNORM (DXT3) | x | x | x | x[c] | x[c] | x[f] | x[f] | x[f] | x[f] | |
| 9 | BC3_UNORM (DXT5) | x | x | x | x[d] | x[d] | x[f] | x[f] | x[f] | x[f] | |
| 10 | BC4_UNORM (RGTC1_UNORM) | x | x | x[g] | x | x | x | ||||
| 11 | BC4_SNORM (RGTC1_SNORM) | x | x | x[g] | x | x | x | ||||
| 12 | BC5_UNORM (RGTC2_UNORM) | x | x | x[g] | x | x | x | ||||
| 13 | BC5_SNORM (RGTC2_SNORM) | x | x | x[g] | x | x | x | ||||
| 14 | BC6H_UF16 | x | x[h] | x | |||||||
| 15 | BC6H_SF16 | x | x[h] | x | |||||||
| 16 | BC7_UNORM | x | x[h] | x | |||||||
| 17 | EAC_SNORM, 1 component | x | |||||||||
| 18 | EAC_SNORM, 2 components | x | |||||||||
| 19 | ETC2 + punch-through alpha | x | |||||||||
| 20 | ASTC 3D LDR | ||||||||||
| 21 | ASTC 3D HDR | ||||||||||
| 22 | ASTC 2D LDR | x[e] | x[e] | x[e] | |||||||
| 23 | ASTC 2D HDR | ||||||||||
| 24 – 31 | Reserved |
Key
[a] Enable for GL_OES_compressed_ETC1_RGB8_texture
[b] Enable for GL_EXT_texture_compression_dxt1
[c] Enable for GL_ANGLE_texture_compression_dxt3
[d] Enable for GL_ANGLE_texture_compression_dxt5
[e] Enable for GL_KHR_texture_compression_astc_ldr
[f] Enable for GL_EXT_texture_compression_s3tc
[g] Enable for GL_EXT_texture_compression_rgtc
[h] Enable for GL_ARB_texture_compression_bptc
Additional documentation
For further details, please see the following documents.
THIS END USER LICENCE AGREEMENT (“LICENCE”) IS A LEGAL AGREEMENT BETWEEN YOU (EITHER A SINGLE INDIVIDUAL, OR SINGLE LEGAL ENTITY) AND ARM LIMITED (“ARM”) FOR THE USE OF THE DELIVERABLES ACCOMPANYING THIS LICENCE. ARM IS ONLY WILLING TO LICENSE THE DELIVERABLES TO YOU ON CONDITION THAT YOU ACCEPT ALL OF THE TERMS IN THIS LICENCE. BY CLICKING “I AGREE” OR BY INSTALLING OR OTHERWISE USING OR COPYING THE DELIVERABLES YOU INDICATE THAT YOU AGREE TO BE BOUND BY ALL THE TERMS OF THIS LICENCE. IF YOU DO NOT AGREE TO THE TERMS OF THIS LICENCE, ARM IS UNWILLING TO LICENSE THE DELIVERABLES TO YOU AND YOU MAY NOT INSTALL, USE OR COPY THE DELIVERABLES, BUT YOU SHOULD PROMPTLY RETURN THE DELIVERABLES TO YOUR SUPPLIER AND ASK FOR A REFUND OF ANY LICENCE FEE PAID.
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SCHEDULE
Part A
Hardware Binaries:
FPGA bitstream file for any or all of the Hardware Source identified below in this Part A
Software Binaries:
Motherboard configuration controller
Daughterboard configuration controller
Daughterboard Application note SelfTest
SCP firmware
Mali GPU Driver
Documentation:
Documentation, provided as PDF
Hardware Source:
Hardware netlists of the ARM CoreLink peripheral technology and components known as TLX-400, NIC-400, and PL330
Header Files:
Provided as part of and with the Mali GPU Driver
Part B
Wrapper:
Application Note wrapper file provided as hardware source files and netlists.
Part C: Example Code
(i) Platform specific libraries and source code.
(ii) ARM source code of Application note SelfTest.
Part D: Separate Files
A. UEFI firmware, including drivers for third party components licensed to you under BSD 3-Clause.
B. Linux kernel licensed to you under the GNU General Public License version 2.0
To the extent that ARM is obliged to do so, ARM hereby offers to supply the files which are subject to the GNU General Public Licence version 2 (identified above), in source code form, subject to the terms of the GNU General Public License version 2, upon request. This offer is valid for three (3) years from the date of your acceptance of this Licence.
C. ARM Trusted Firmware licensed to you under BSD 3-Clause.
D. ARM Gator Profile driver and daemon licensed to you under the GNU General Public License version 2.0
To the extent that ARM is obliged to do so, ARM hereby offers to supply the files which are subject to the GNU General Public Licence version 2 (identified above), in source code form, subject to the terms of the GNU General Public License version 2, upon request. This offer is valid for three (3) years from the date of your acceptance of this Licence.
/end
ARM contract references: LES-PRE-20435 JUNO ARM DEVELOPMENT PLATFORM DELIVERABLES