tilal6991/android_device_huawei_u8150 — comment on commit 10cf0b871693fd411dcb0e05ad45ff0dba326a92
File:  line 0
By poruid:

rild takes as a commandline argument the name of libril. I got the impression that the rild provided with the original eclair ROMs contained proprietary code. The gingerbread ROMs seem to use an open source rild in combination with a libril where proprietary code may have been moved.
I'm not sure whether this is how things work and are curious to know what you think.