Compile Android from source

Content

Hardware support (HSG X5A)
Preparing enviroment
How to compile
FWDN V7
Serial output

1. Hardware support (HSG X5A)

Telechips TCC8900 720MHz, AX revision
Samsung K4T1G164QE-HCE7 DDR2-800 400MHz memory
LCD EK700AT9309 800×480 - working
LCD backlight - not working yet :( need to find correct gpio for X5A board

Great X5A hardware page: http://aschillings.co.uk/html/x5a_hardware.html.

kernel/drivers/char/tca_backlight.c

//  A7 : LCD_bl_en ,  D22 : LCD_RST,   C28:LCD_DISP ,  extension: LCD_PWRCTL
#define LCD_PROT_INT()          BITCSET(HwGPIOA->GPEN, Hw7, Hw7);       \
                                BITCSET(HwGPIOD->GPEN, Hw22, Hw22); \
                                BITCSET(HwGPIOC->GPEN, Hw28 , Hw28); \
                                BITCSET(HwGPIOA->GPDAT, Hw7, 0);  \
                                BITCSET(HwGPIOD->GPDAT, Hw22, 0); \
                                BITCSET(HwGPIOC->GPDAT, Hw28 , 0);

#define LCD_POWER_ON()          Power_OnOff(1)
#define LCD_POWER_OFF()         Power_OnOff(0)
#define LCD_DISPLAYON()         BITCSET(HwGPIOC->GPDAT, Hw28 ,Hw28)
#define LCD_DISPLAYOFF()        BITCSET(HwGPIOC->GPDAT, Hw28, 0)
#define LCD_RESET_H()           BITCSET(HwGPIOD->GPDAT, Hw22 ,Hw22)
#define LCD_RESET_L()           BITCSET(HwGPIOD->GPDAT, Hw22, 0)

2. Preparing enviroment

I'm using Ubuntu 10.10 32-bit. Copy armv6_codesourcery.tar.bz2 to /opt/ directory

tar -jxvf armv6_codesourcery.tar.bz2

export PATH=/opt/armv6/codesourcery/bin:$PATH

Check version

arm-none-linux-gnueabi-gcc -v

Install other needed tools

sudo apt-get install libncurses5-dev libqt3-mt-dev qt3-dev-tools g++ flex bison gperf

Remove Java 6

sudo apt-get remove openjdk-6-jre

Install Java 5 (it is needed for Android 2.1)

sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu dapper main multiverse"
sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu dapper-updates main multiverse"
sudo apt-get update
sudo apt-get install sun-java5-jdk

3. How to compile

I recommend to create ~/mydroid/android/ folder and place the BSP files there.

ls -l ~/mydroid/android

First prepare & compile kernel

cd ~/mydroid/android/kernel
make tcc8900_defconfig
make menuconfig
make

Go back to android directory

cd ~/mydroid/android
lunch 27

Now its time to compile bootloader (lk.rom)

cd ~/mydroid/android/bootable/bootloader/lk
rm build-tcc*
make tcc8900_evm

Finally, go to build final images

cd ~/mydroid/android/
make

Now make a tea or coffee :) Correction: after you return with tea/coffee go for a walk...

Creating tcc8900_mtd.img

mkmtdimg --boot out/target/product/tcc8900/boot.img --system out/target/product/tcc8900/system.img --recovery out/target/product/tcc8900/recovery.img --output tcc8900_mtd.img

4. FWDN V7

To download images to the device use FWDN V7, older V6 is not supported anymore.

FWDN_V7

5. Serial output

TBD