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:
1. LCD panel, including PowerVR (OpenGL)
2. Touch panel
3. USB host
4. USB gadget
5. SD card
6. HDMI output
7. Ethernet (Web browsing)
8. UARTs
9. SPI
10. I2C
11. 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.
- Variscite recommends the use of Ultra (generation 8 and above) SD-Card for optimial performance
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.