Android 4.0.3 ICS on DM814x (Naon)

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Info Box
Android-logo.jpg Applies to Android
Naon am387x-dm814x.png Applies to Naon
Maya 03.png Applies to Maya
Dido-main.png Applies to Dido

Introduction[edit | edit source]

Texas Instruments provides the Android developement kits for the Sitara platform, but an official release for the DM814x/AM387x processor is not yet available. However, it is possible to build Android 4.0.3 Ice Cream Sandwich (ICS) for the DM814x/AM387x processor and make it run on the Naon/Maya/Dido SoMs.

For further information on Android, please visit Android category page.

Useful links[edit | edit source]

Demo board[edit | edit source]

Android 4.0.3 ICS has been built to run on the following system:

  • Naon SOM with TI DM8148 processor
  • NaonEVB-Lite carrier board with custom add-on to provide display support
  • 800x480 LCD display (mod )
  • Capacitive touch screen
Android ICS on Naon - Demo board

Configuring the build system[edit | edit source]

Please follow the instructions to initialize the build environment and in particular download the repo tool and the AOSP source code.

Please note that the required manifest file is rowboat-ics-ti81xx.xml. Please enter the following commands to update the source code:

repo init -u git:// -m rowboat-ics-ti81xx.xml
repo sync

Building Android[edit | edit source]

Building the kernel[edit | edit source]

Assuming that rowboat-android is the directory containing the full AOSP source code:

  • kernel contains the Android kernel tree that must be patched to add Naon support
  • out/target/product/ti814xevm/ will contain the created root file system

To launch Android kernel build, enter the following commands:

umask 0002
export PATH=<path_to_toolchain>:$PATH 
export ARCH=arm
export CROSS_COMPILE=arm-none-linux-gnueabi-
export OUT_DIR_COMMON_BASE=<path_to_build_directory>
export USE_CCACHE=1
export CCACHE_DIR=<path_to_build_cache_directory>

Makefile customization[edit | edit source]

N.B: The main Makefile must be modified at rows 71-73 so that the kernel configuration file naon_ics_defconfig is used instead of the default one.

ifeq ($(TARGET_PRODUCT), naon)
ifeq ($(KRN_DBG),1)
	$(MAKE) -C kernel ARCH=arm naon_ics_defconfig V=1 CONFIG_DEBUG_DONT_REORDER_CODE=1
	$(MAKE) -C kernel ARCH=arm naon_ics_defconfig

Building the RFS[edit | edit source]

To build the Android root file system (please note that it will take some time, depending on the host system performaces), launch the following commands:

echo "Make new RFS..."
sudo make TARGET_PRODUCT=naon OMAPES=6.x fs_tarball
echo "DONE!"

N.B: The build/core/ must be modified at row 13:

ifeq ($(TARGET_PRODUCT), naon)
CLEAN_RULE := syslink_clean sgx_clean kernel_clean clean
rowboat: sgx

row 60


row 83

ifeq ($(TARGET_PRODUCT), naon)
ifeq ($(KRN_DBG),1)
	$(MAKE) -C kernel ARCH=arm naon_ics_defconfig V=1 CONFIG_DEBUG_DONT_REORDER_CODE=1
        $(MAKE) -C kernel ARCH=arm naon_ics_defconfig

row 114

ifeq ($(TARGET_PRODUCT), naon)
sgx: kernel_build ti81xx_kernel_modules

row 125


Cleaning the build[edit | edit source]

To clean the build directory and repeat the process, just remove the out directory:

sudo rm -rf out

Running Android on Naon[edit | edit source]

U-boot environment[edit | edit source]

The following u-boot environment variables must be set to run Android:

andrk=tftp ${loadaddr} android/uImage
andrcons=setenv bootargs ${bootargs} console=ttyO0,115200n8 androidboot.console=ttyO0 rootwait noinitrd init=/init rw earlyprintk
andrmem=setenv bootargs ${bootargs} mem=364M vram=16M notifyk.vpssm3_sva=${notify_mem}
andrenv-nfs=setenv bootargs root=/dev/nfs rw nfsroot=${nfsserverip}:${andrroot} panic=5 loglevel=6 rootdelay=5
andrenv-mmc=setenv bootargs root=/dev/mmcblk0p1 rootfstype=ext3 loglevel=8 rootdelay=2 panic=5
android=run andrk andrenv-nfs andrmem andrcons addip; bootm ${buf}
android-mmc=run andrk andrenv-mmc andrmem andrcons addip; bootm ${buf}
andrnand=run andrenv-mmc andrmem andrcons addip; sf probe 0:0; sf read ${loadaddr} 0x80000 0x400000; bootm ${loadaddr}

Display type and resolution[edit | edit source]

Android detects the display resolution from framebuffer settings. To change the resolution, the load parameter of the vpss.ko module must be adjusted into the rc.syslink init file. Some examples are the following:

  • for HDMI output at 1080p, the parameter ismode=hdmi:1080p-60,dvo2:800x480@60
  • for HDMI output at 1600x1200, the parameter is mode=hdmi:1600x1200@60,dvo2:800x480@60
  • for the 800x480 LCD display, the parameter is mode=hdmi:800x480@60,dvo2:lcd-ta1h

Screenshots[edit | edit source]

Android ICS on Naon - Boot
Android ICS on Naon - Desktop
Android ICS on Naon - Apps
Android ICS on Naon - Info Screen