Android 4.0.3 ICS on DM814x (Naon)

Info Box Applies to Android Applies to Naon Applies to Maya Applies to Dido

Introduction

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.

Useful links

• Get started building Gingerbread for TI816x or TI814x with support for hardware-accelerated multimedia
• Rowboat Git repository
• Manifest file used for building
• Downloading the source tree

Configuring the build system

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://gitorious.org/rowboat/manifest.git -m rowboat-ics-ti81xx.xml
repo sync

Building Android

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

• repoICS-init.sh inizializza la cartella per ICS e sincronizza TUTTI i git collegati
• avvia.sh esegue il make di tutto ICS

• • Nota: ho modificato Makefile riga 71-73 in modo che usi il file naon_ics_defconfig al posto di quello TI.

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

• build tutti gli script per il build di android

file modificato build/core/root.mk aggiungendo riga 13

ifeq ($(TARGET_PRODUCT), naon)
export SYSLINK_VARIANT_NAME := TI814X
CLEAN_RULE := syslink_clean sgx_clean kernel_clean clean
rowboat: sgx
else

riga 60

endif

riga 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
else
        $(MAKE) -C kernel ARCH=arm naon_ics_defconfig
endif
endif

riga 114

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

riga 125

endif

• avvia_dbg.sh esegue il make con le opzioni di DEBUG per il kernel
• mkRFS.sh crea il RFS
  • Nota: ho disabilitato la creazione del tar che nn server se si usa NFS. file build/tools/mktarball.sh
• clean.sh cancella la cartella di build out in modo che il successivo make compili tutto da capo.