About the Linaro Confectionary Release for Versatile Express (Aarch32)

The Linaro Confectionary release is based on the AOSP Lollipop
Android-5.1.1_r3 version. This reference build is a userdebug variant
build, and it contains support allowing full use of the 32-bit ARMv7-A
architecture and supports the 32-bit applications, with SELinux
enabled by default.

The release uses the Linaro Stable Kernel version 3.10. The sources are
built using Linaro GCC 4.9-2015.04. To disable SELinux pass “selinux=0”
as the boot parameter in the UEFI bootargs configuration.

The Android AOSP software provided in this release is functionally
tested with CTS version 5.1 R1 and the CTS results are shared with
members. The BIONIC component is additionally validated with Android
BIONIC tests. We also added some benchmark tests to observe the performance
trend in various fields.

Sources are also made available so you can build your own images
(see the Building from Source tab).

What is new

• Android source changed to based on the Lollipop Android-5.1.1_r3 version

About the Android flavour of Linaro Stable Kernel (LSK)

The kernel used by Linaro Confectionary Release for Versatile Express
is the Android flavour Linaro Stable Kernel (LSK), which is produced,
validated and released by Linaro and is based on the Linux stable
kernel tree.
The LSK focuses on quality and stability and is therefore a great
foundation for product development. It also includes backports of
commonly desired features, provided they meet the quality requirements,
and also any bug fixes.

Sources are also made available so you can build your own images (see
‘Building from Source’).

Support

Subscribe to the important Linaro mailing lists and join our IRC
channels to stay on top of Linaro development.

• Linaro Android Development ‘Mailing list’
• Linaro Android IRC channel on irc.freenode.net at #linaro-android
• Bug reports should be filed in ‘Bugzilla’ under “Linaro Android” product and “Reference Linaro Confectionery Release (R-LCR)” component.
  • You will need to login to your Linaro account. If you do not have an account or are having problems, email its@linaro.org for help.
• More general bug reports should be filed in Bugzilla against the individual packages that are affected.
• Questions? ‘ask linaro’
• Interested in commercial support? inquire at ‘Linaro Support’

Android Patch Summary

There are patches developed by ARM and Linaro engineering
teams applied to get Android booting to UI on the TC2 Aarch32
development platform. These patches can be found on Linaro’s Android
Git repositories via file LOLLIPOP-MLCR-PATCHSET.
Some of these patches have been submitted to AOSP and are being tracked
for acceptance.

Any patches can be contributed through the instructions described Here

Known Issues and Limitations

Known limitations

• SW rendering for user interface only – there is no hardware accelerated graphics

Known issues

The following known issues are present in this release. Please contact support@linaro.org if you wish to know more information about these issues or have access problems when attempting to view them.

Bug ID	Bug title	Bug summary
Bug 1015	monkey long run test fails on TC2 LCR build	Blacklist for known to fail packages has not be updated or deployed – long monkey run fails as result
Bug 997	glslparser test suite partially passes on 14.12 LCR	some glsl syntax in test are not recognized by Mali driver
Bug 993	EVDEV failures in linaro android kernel test suite on 14.12 LCR build
Bug 224	Corrupted png files can cause crashes in gallery	The stock Gallery application crashes when displaying known corrupt PNG files.
Bug 222	Dev Tools crashes on startup	Dev Tools app fails to instantiate com.android.development.Development class from /system/app/Development.apk
Bug 64	Test test_pthread_rwlock from bionic libc test suite fails on Juno build – LAVA

Get artifacts

Click on each link to download:

• boot.tar.bz2
• system.tar.bz2
• userdata.tar.bz2

Get linaro image tools

Run these commands to get all the dependencies for linaro-image-tools and the tip of linaro-image-tools

  $ sudo add-apt-repository ppa:linaro-maintainers/tools
  $ sudo apt-get update
  $ sudo apt-get install linaro-image-tools

If you’re using a “tip” build then we suggest you use the tip of linaro-image-tools from http://git.linaro.org/ci/linaro-image-tools.git

Create media (SD card) Create mmc image:

$ linaro-android-media-create --mmc /dev/sdX --image_size 2000M --dev vexpress --system system.tar.bz2 --userdata userdata.tar.bz2 --boot boot.tar.bz2

If you’re using tip of linaro image tools

$ ./linaro-image-tools/linaro-android-media-create --mmc /dev/sdX --image_size 2000M --dev vexpress --system system.tar.bz2 --userdata userdata.tar.bz2 --boot boot.tar.bz2

Remove the SD card from the device writer and plug it into the board.

Check console output

Plug in an USB-to-serial converter and run minicom

$ minicom -D /dev/ttyUSB0 -w -C minicom.txt

Configure the boot time UEFI configuration

Stop at UEFI prompt and configure the UEFI options like this:

ARM Versatile Express Boot Monitor

Version: V5.1.9

Build Date: Dec 3 2012

Daughterboard Site 1: V2P-CA15_A7 Cortex A7

Daughterboard Site 2: Not Used

Running boot script from flash – BOOTSCRIPT

UEFI firmware (version built at 16:18:48 on May 26 2015)

[=3h[=3h[=3h[=3h[=3h[=3h[=3h[=3hThe default boot selection will start in 10 seconds

[1] Linaro image on SD card
 – VenHw(09831032-6FA3-4484-AF4F-0A000A8D3A82)/HD(1,MBR,0×00000000,0×3F,0×19FC0)/uImage
 – Initrd: VenHw(09831032-6FA3-4484-AF4F-0A000A8D3A82)/HD(1,MBR,0×00000000,0×3F,0×19FC0)/uInitrd
 – Arguments: console=ttyAMA0,38400n8 rootwait root=/dev/mmcblk0p2
 – FDT: VenHw(09831032-6FA3-4484-AF4F-0A000A8D3A82)/HD(1,MBR,0×00000000,0×3F,0×19FC0)/v2p-ca15-tc2.dtb
 – LoaderType: Linux kernel with Local FDT

———————————-

Global FDT Config
 – VenHw(09831032-6FA3-4484-AF4F-0A000A8D3A82)/HD(1,MBR,0×00000000,0×3F,0×19FC0)/v2p-ca15-tc2.dtb

———————————-

[a] Boot Manager

[b] Shell

© Reboot

[d] Shutdown

Start: a

[1] Add Boot Device Entry

[2] Update Boot Device Entry

[3] Remove Boot Device Entry

[4] Update FDT path

[5] Return to main menu

Choice: 3

[1] Linaro image on SD card

Delete entry: 1

[1] Add Boot Device Entry

[2] Update Boot Device Entry

[3] Remove Boot Device Entry

[4] Update FDT path

[5] Return to main menu

Choice: 1

[1] boot (67 MB)

[2] testboot (99 MB)

[3] (6984 MB)

[4] VenHw(E7223039-5836-41E1-B542-D7EC736C5E59)

[5] VenHw(02118005-9DA7-443A-92D5-781F022AEDBB)

[6] VenHw(1F15DA3C-37FF-4070-B471-BB4AF12A724A)

[7] VenHw(CC2CBF29-1498-4CDD-8171-F8B6B41D0909)

[8] PXE on MAC Address: 00:02:F7:00:47:35

[9] TFTP on MAC Address: 00:02:F7:00:47:35

Select the Boot Device: 2

File path of the EFI Application or the kernel: kernel

Boot Type: [a] ATAGS, [g] Global FDT or [l] Local FDT? [a/g/l] l

Add an initrd: [y/n] y

File path of the initrd: ramdisk.img

Arguments to pass to the binary: console=tty0 console=ttyAMA0,38400n8 root=/dev/sda1 rootwait ro androidboot.console=ttyAMA0

File path of the local FDT: v2p-ca15-tc2.dtb

Description for this new Entry: LAVA Android Test Image

[1] Add Boot Device Entry

[2] Update Boot Device Entry

[3] Remove Boot Device Entry

[4] Update FDT path

[5] Return to main menu

Choice: 5

[1] LAVA Android Test Image
 – VenHw(09831032-6FA3-4484-AF4F-0A000A8D3A82)/HD(3,MBR,0×00000000,0×200000,0×32000)/kernel
 – Initrd: VenHw(09831032-6FA3-4484-AF4F-0A000A8D3A82)/HD(3,MBR,0×00000000,0×200000,0×32000)/ramdisk.img
 – Arguments: console=tty0 console=ttyAMA0,38400n8 root=/dev/sda1 rootwait ro androidboot.console=ttyAMA0
 – FDT: VenHw(09831032-6FA3-4484-AF4F-0A000A8D3A82)/HD(3,MBR,0×00000000,0×200000,0×32000)/v2p-ca15-tc2.dtb
 – LoaderType: Linux kernel with Local FDT

———————————-

Global FDT Config
 – VenHw(09831032-6FA3-4484-AF4F-0A000A8D3A82)/HD(1,MBR,0×00000000,0×3F,0×19FC0)/v2p-ca15-tc2.dtb

———————————-
 [a] Boot Manager
 [b] Shell
 © Reboot
 [d] Shutdown

Start: 1
   PEI 3681 ms
   DXE 17857 ms
   BDS 15299 ms

Total Time = 36837 ms


	
[ 0.000000] Booting Linux on physical CPU 0×100

[ 0.000000] Initializing cgroup subsys cpu

[ 0.000000] Initializing cgroup subsys cpuacct

[ 0.000000] Linux version 3.10.74-00126-g14cdcbf (buildslave@x86-64-07-android) (gcc version 4.9.3 20150413 (prerelease) (Linaro GCC Snapshot 4.9-2015.04) ) #1 SMP PREEMPT Tue May 26 16:04:17 CEST 2015

Accessing Source Code

Linaro Android Source Code

Run the linaro_android_build_cmds.sh script, it will download the entire source code for both Android and the kernel and attempt to build it.

The pinned and source manifests can be found here:

• Pinned Manifest (?)
• Source Manifest

Compiling Linaro Android RootFS+Kernel

The following simple steps download, install and compile a complete Linaro Android distribution

• Download and install Ubuntu 14.04 64 bit or newer (download)
• Download the Android building script for this build from the list of artifacts listed above or here

• Run the script

The linaro_android_build_cmds.sh script will download the source and create the build.:

chmod a+x linaro_android_build_cmds.sh
./linaro_android_build_cmds.sh -h  #To print the script usage

Most commonly used build options:

$ linaro_android_build_cmds.sh -o $PWD/vendor.tar.bz2 -m pinned-manifest.xml
$ linaro_android_build_cmds.sh -t #To build from the tip of the branch without overlay
$ linaro_android_build_cmds.sh -t -o <overlay> #To build from the tip of the branch with provided overlay
$ linaro_android_build_cmds.sh -m <pinned_manifest> -o <overlay> #To reproduce an exact build from pinned manifest
$ linaro_android_build_cmds.sh -t -l <login-id> #Provide login/access ID to clone and build code from linaro-private repositories

If the linaro_android_build_cmds.sh completely, you will find the boot.tar.bz2, system.tar.bz2 and userdata.tar.bz2 3 files
under ./android/out/target/product/vexpress directory, please use these 3 file to bood your board.

You can reference to the Binary Image Installation tab for detail instructions.