froom assembly to C in boot code

From: Koala GNU <koala.gnu@tiscalinet.it>
To: linux-kernel <linux-kernel@vger.kernel.org>
Subject: froom assembly to C in boot code
Date: Fri, 25 Jul 2003 20:05:08 +0200	[thread overview]
Message-ID: <3F217154.30004@tiscalinet.it> (raw)

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Hi all,

I forward to the lkml a mail I posted on kernelnewbies hoping someone of 
you can help me.
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Hi,

for a couple of weeks I worked on some examples about boot process. In 
my previous post on kernelnewbies I post some of them.

Now I have a problem. My goal is to boot from a diskette, load the setup 
code (4 sectors), load the kernel at 0x10000 and move it at 0x1000 
trying to execute a main C routine that
should represent the start of the kernel. This C routine print simply 
"Hello Kernel".

For my job I used the examples of Berlin Brown at 
http://bama.ua.edu/~brown084/main.html  because this code is a 
simplified version of the linux boot process.

Attached there is my code, hoping someone of you can give a look at it 
and tell me if there is something wrong (I think so).

Before the jump to 0x0100 all seems work fine. The problem happen when I switch in 
protected mode and try to jump to 0x0100.

Ahhhh!!! I use bochs for my test.

PS

To build my code type:

make clean (when necessary)
make all

to write on a diskette:
make disk

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