Questions encountered in the learning process, because the learning materials are teachers, unknown so just asking our predecessors, bosses grant instruction;
1, teacher development board is Orion, to provide a uboot uimage, exynos4412. DTB this three files, file's role is to know about, but the material is how to choose? All the A9 board use this three files? Seemingly looks exynos4412. DTB this file is the board special, the other two? Searched for and found that there are a lot of version, just don't understand version of select the where to start?


2, the experiment when the file system is mounted, that how to from a virtual machine?

3, all said Linux system is convenient, can be cut, because things are used in the experiment, the teacher give lessons is very few, the clipping reflect? Where is cut?

4, the driver is also one by one, to write, characters is the main learning drive, the driver how to join in the system?



Thank you for your predecessors and bosses glad;

Final conclusion (HuaQing really pit embedded training institution, training of embedded, transplantation, 5 days only taught for more than 3 days, 7 days driver only speak about the character of driving, knowledge is introduced on the bare plate CortexA9 core device and instruction set, up to now didn't understand how the so-called naked plate is a bare plate and the tested boards reach can open, where naked??? Even in this life won't believe training institutions, only learned to C...

CodePudding user response:

Uboot need to download the source code, according to their own board modify compile
Kernel is cut, according to the need to achieve minimum
Personal understanding