On 10/14/05, Deepak Joshi <deepak_cins@xxxxxxxxxxx> wrote: > I want to learn the complete booting process of linux > kernel. which files and function it uses, how it > initilizes the memory and devices upto serial port > communication. can any body plz tell me the book or > any link which explains all this. or just the pointers > to kernel code from where to start. I used to think that I could easily learn this from a book, then I tried going through the boot code for myself when I started doing board ports. The best way to understand the code is thus: * start in arch/<your arch>/kernel/head_blah.S * follow through calls to start_kernel * begin inserting printk statements * compile and watch trace This is good because it forces you to actually learn where the files are as you instrument them and is infinitely better than reading a book or just blindly following some other tool, in my own opinion. Of course you could also run gdb against /proc/kcore to see minimally useful output or have a fancy hardware debugger like the BDI2000 lots of us embedded folks use to pick and poke at Linux and do obscene stuff with the aid of gdb remote. Jon. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
