Messages in this thread | | | Date | Fri, 25 Jul 2003 20:05:08 +0200 | From | Koala GNU <> | Subject | froom assembly to C in boot code |
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Hi all,
I forward to the lkml a mail I posted on kernelnewbies hoping someone of you can help me. -------------------------------------------------------------------------------------------------------------------------
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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