VAR-SOM-OM37 Android GS
VAR-SOM-OM37 - Android support
Variscite's VAR-SOM-OM37 Android support is based on TI Android DevKit V2.3 http://processors.wiki.ti.com/index.php/TI-Android-GingerBread-2.3.4-DevKit-2.1_DeveloperGuide
Android version 2.3.6 (GingerBread)
Supported device drivers:
- LCD panel, including PowerVR (OpenGL)
- Touch panel
- USB host
- USB gadget
- SD card
- HDMI output
- Ethernet (Web browsing)
- UARTs
- SPI
- I2C
- Audio
Installing pre-built images
.IMG file in FTP are located under: \VAR-SOM-OM35_VAR-SOM-OM37_VAR-SOM-AM35\Software\Android\VAR-SOM-OM37\Gingerbread-2_6_37\
The Android folder on FTP contains ready-to-run pre-built image which contain:Kernel uImage and Android File system.
Pre-installed uboot / xloader should be used.
To install:
Plug a 4GB SD-Card to your PC, run dmesg and see what device is added (i.e. /dev/sdbX)
gunzip devkit_2_3_var_som_om37.img.gz dd if=devkit_2_3_var_som_om37 of=/dev/sdX bs=128k
Uboot Bootargs:
setenv ethaddr 00:11:22:33:44:55
setenv ipaddr 1.1.1.1
setenv serverip 1.1.1.11
setenv netmask 255.255.255.0
setenv gatewayip 192.168.1.1
setenv bootdelay 1
setenv console_tty ttyO2
setenv get_kernel run nand_kernel
setenv nand_kernel nand read.i 0x80000000 280000 300000
setenv mmc_kernel 'mmc init; fatload mmc 1 0x80000000 uImage'
setenv tftp_kernel tftpboot 0x80000000 uImage
set addmac setenv bootargs \${bootargs} ethaddr=\${ethaddr}
set addconsole setenv bootargs \${bootargs} console=\${console_tty},115200n8 androidboot.console=\${console_tty}
setenv bootargs_common init=/init mem=256M noinitrd rw omap_vout.vid1_static_vrfb_alloc=y vram=8M omapfb.vram=0:8M rootdelay=1 rootwait
setenv setargs_fs set bootargs \${bootargs_common} root=/dev/mtdblock4 rootfstype=jffs2 ip=::::::off
setenv setargs_nfs set bootargs \${bootargs_common} root=/dev/nfs nfsroot=\${nfsroot},nolock ip=dhcp
setenv setargs_sd set bootargs \${bootargs_common} root=/dev/mmcblk0p2 ip=off
setenv boot_fs run get_kernel\;run setargs_fs\;run addmac\;run addconsole\;bootm 0x80000000
setenv boot_nfs run tftp_kernel\;run setargs_nfs\;run addmac\;run addconsole\;bootm 0x80000000
setenv boot_sd run mmc_kernel\;run setargs_sd\;run addmac\;run addconsole\;bootm 0x80000000
setenv bootcmd run boot_sd
saveenv
Build from Source
In General, Follow TI instructions : http://processors.wiki.ti.com/index.php/TI-Android-GingerBread-2.3.4-DevKit-2.1_DeveloperGuide
Kernel changes should be made to default manifest: (patch can be obtained from Variscite's FTP)
cd kernel git checkout remotes/origin/rowboat-kernel-2.6.37 git apply ANDROID_DEVKIT_23_VAR-SOM-OM37.patch
Continue with intructions as defined in TI developers guilde.