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<div class="moz-cite-prefix">On 02/23/2014 10:54 PM, subham soni
wrote:<br>
</div>
<blockquote
cite="mid:CAMQVM6o94p21BruTrFWdi3GhAyV7VucMxa5h11VQRpF5C=sr3A@mail.gmail.com"
type="cite">
<div dir="ltr">
<div style="font-family:arial,sans-serif;font-size:13px">Hello,<br>
</div>
<span style="font-family:arial,sans-serif;font-size:13px">
I am a newbie to kernel development. I would like to develop
my own kernel from scratch. From where should I start from?</span></div>
</blockquote>
developing you own Kernel. nice. i suggest you learn more about
kernel design and their role's. that will make you aware of how
things work.<br>
<a class="moz-txt-link-freetext" href="http://wiki.osdev.org/">http://wiki.osdev.org/</a>
(+ many more) will be your friends.<br>
<blockquote
cite="mid:CAMQVM6o94p21BruTrFWdi3GhAyV7VucMxa5h11VQRpF5C=sr3A@mail.gmail.com"
type="cite">
<div dir="ltr"><span
style="font-family:arial,sans-serif;font-size:13px"> I have a
good experience of the commands in Linux
(Ubuntu,Fedora,Debian,</span><span
style="font-family:arial,sans-serif;font-size:13px">Slackware).
</span></div>
</blockquote>
This would help you on your way. :)<br>
<blockquote
cite="mid:CAMQVM6o94p21BruTrFWdi3GhAyV7VucMxa5h11VQRpF5C=sr3A@mail.gmail.com"
type="cite">
<div dir="ltr"><span
style="font-family:arial,sans-serif;font-size:13px">I googled
out and I came to know that I should start from Device
Drivers.</span></div>
</blockquote>
device drivers are for kernel's that are running.<br>
if you want to make your own, you have to design a infrastructure
for drivers to place.<br>
<blockquote
cite="mid:CAMQVM6o94p21BruTrFWdi3GhAyV7VucMxa5h11VQRpF5C=sr3A@mail.gmail.com"
type="cite">
<div dir="ltr"><span
style="font-family:arial,sans-serif;font-size:13px"> Now which
device driver should I code?</span></div>
</blockquote>
if you are thinking of starting from Linux source, give it a try :p.<br>
/dev/null is an excellent example to start.<br>
<blockquote
cite="mid:CAMQVM6o94p21BruTrFWdi3GhAyV7VucMxa5h11VQRpF5C=sr3A@mail.gmail.com"
type="cite">
<div dir="ltr"><span
style="font-family:arial,sans-serif;font-size:13px"> Or should
I master Shell Scripting?</span></div>
</blockquote>
depends on type of work, but i think basic things like Makefile,
compiling from shell, and doing echo work should be ok (at minimum).<br>
<blockquote
cite="mid:CAMQVM6o94p21BruTrFWdi3GhAyV7VucMxa5h11VQRpF5C=sr3A@mail.gmail.com"
type="cite">
<div dir="ltr"><span
style="font-family:arial,sans-serif;font-size:13px">For
developing a kernel (my aim here would be to increase the
battery life, since most laptops have only 1.30 hrs or 2.00
hrs in Linux OS) and 3.00 hrs in Windows Environment. How
should I start and from where?</span><br>
</div>
</blockquote>
all i can say is:<br>
learn more about low power thingi'es so that you can re iterate on
what your asking.<br>
<br>
Linux OS -> GNU/Linux OS GNU userland utilities/applications
with Linux Kernel :)<br>
<br>
summary:<br>
learn more about kernel design,<br>
how they work,<br>
decide hardware to bake on.<br>
read hardware document<br>
learn from others kernel<br>
VM will be handy. (qemu, ...)<br>
patience <--- important<br>
be ready for hiccup's<br>
<br>
<blockquote
cite="mid:CAMQVM6o94p21BruTrFWdi3GhAyV7VucMxa5h11VQRpF5C=sr3A@mail.gmail.com"
type="cite">
<div dir="ltr"> </div>
<br>
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</blockquote>
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