STEPS TO BUILD UBOOT

COMPILING UBOOT

Clone the repository by

git clone -b sunxi https://github.com/androportal/uboot-allwinner.git

cd into uboot-allwinner
```
cd uboot-allwinner
```
To compile uboot download and install Sourcery CodeBench Lite Edition, then issue:
```
make a13_olinuxino CROSS_COMPILE=arm-none-linux-gnueabi-
```
After successful compilation u-boot.bin will be available at root of the directory and sunxi-spl.bin will be in spl directory

Insert sdcard in card reader or MMC reader available in laptops/netbooks
Backup all your sdcard data, and issue the following commands carefully, replace X in /dev/sdX with suitable letter(a lower case alphabet) alloted for your sdcard, remember X will never be a if you have a hard disk installed, so keep in mind it must be something like /dev/sdb or /dev/sdc etc. Please check twice and if you are still unsure leave this README right now otherwise you may end up with non bootable machine:
```
sudo fdisk -u=sectors /dev/sdX
```
First clear the previous u-boot and its configurations if any:
```
sudo dd if=/dev/zero of=/dev/sdX bs=1024 seek=544 count=128
```
Now from same uboot-allwinner directory issue these commands, again replace X with suitable value, now to burn sunxi-spl.bin to sdcard issue:
```
sudo dd if=spl/sunxi-spl.bin of=/dev/sdX bs=1024 seek=8
```
Similarly to burn u-boot.bin issue
```
sudo dd if=u-boot.bin of=/dev/sdX bs=1024 seek=32
```

At this point we have a bootable sdcard readly. Get kernel and rootfs to make a usuable Linux for your tablet.

Next topic: Compiling kernel