The zip file includes read me files which carries information about how to compile from the source code and two tar folders which include source of the kernel and the platform.
For US developers:
T-Mobile -- SGH-T849_OpenSource.zip
USA (Sprint) -- SPH-P100_OpenSource.zip
USA (Verizon) -- SCH-I800_OpenSource.zip
This is yet another example that its the product, it's marketing and usability that decides the profitability and not holding the source code hostage and be an evil force.
The IT industry has yet to mature to the level of other industries like automobile and food which are about more choices and not a bi-polar world shared between two giants. Thanks to leaders like Richard M Stallman and Linus Torvalds who used GNU GPL 'Pay it forward' like licenses to to make it happen.
iPad on the contrary is based on yet another Free Software technology BSD, but denies every right to access the code owing to BSD's license terms.
Here is what you get to see in the Read Me file:
Galaxy Tab is launched in many countries, including Europe and North Amarica.
S/W is almost the same but there are some differences between the European version(GT-P1000) and the US Verizon version(SCH-I800).
The open source codes to be open here are only the differences.
2. Get GT-P1000 open source code
( Download site : http://opensource.samsung.com )
Unzip it, then you will see the file GT-P1000_Platform.tar.bz2 which includes the platform source code.
3. Overwrite GT-P1000 Platform OpenSource to the Android open source.
4. Unzip SCH-I800_Platform.tar that comes from the US Verizon version.
( You can find SCH-I800_Platform.tar in the same directory with this README.txt . )
5. Overwrite SCH-I800 Platform OpenSource to the Android + GT-P1000(European) Platform open source code.
6. Do "make".
May the source be with you!