On Sat, 3 Jul 1999, Michael Bacarella wrote:
> > I have a question. After GRUB does its job, where does the control
> > go to in the kernel? i.e. where do I start reading the kernel sources
> > (gnumach and hurd), considering the sequence in which the booting process
> > takes place till the shell executes.
> GRUB loads /boot/gnumach and pass execution onto it, along with
> information on where to find the servers.boot file. (which is why you
> have to tell GRUB these two things to boot the Hurd).
> GNUMach reads servers.boot (usually at /boot/servers.boot) for information
> on what hurd servers to start (as well as other things to set)
> servers.boot has a line for invoking ext2fs.static, which contains the
> ext2fs hurd server as well as a group of other misc. servers needed for
> the system to function.
> Somewhere along the line, I suppose init would start, and it parses
> traditional UNIX startup files, bringing the system up to the user.
> In single user mode, /bin/bash is invoked instead.
I know about this. I was asking about the entry point in the
gnumach kernel; where in the sources can I start so as to effectively
follow the boot sequence using a traceing program, like 'global', for eg,
in Linux, the execution starts probably in arch/i386/boot/bootsect.S, then
arch/i386/boot/setup.S and video.S; after doing some processing, the flow
goes to arch/i386/boot/compressed/head.S, calling decompress_kernel,
finally the flow goes to start_kernel in init/main.c ...
> --Michael Bacarella
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