Date: Fri, 05 Nov 2004 00:17:28 +0100 From: Willem Jan Withagen <wjw@withagen.nl> To: Scott Long <scottl@freebsd.org> Cc: "arch@freebsd.org" <arch@freebsd.org> Subject: Re: Booting questions .... Message-ID: <418AB888.7070305@withagen.nl> In-Reply-To: <418AB649.80809@freebsd.org> References: <418AB176.9030604@withagen.nl> <418AB649.80809@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Scott Long wrote:
> The loader has a protected mode environment. It is apparently not all
> that hard to port memtest86 into it. I'd highly recommend doing this
> rather than trying to hack up the early pmap initialization.
Is that so.... I was unable to find that. :( can you give me a pointer??
And like I wrote in the previous discussion. The algorithms are not all that
difficult to write. It is getting easy access to the memory.
If you look at memtest86, you'll that they have to get a lot of work done to
get to the actual job: memory testing.
And that only for the x86 type processors, which are already served by memtest86.
But reading your question, the answer would be:
too complex to get this figured out
Then how about this:
what minimal parts of the kernel do I need to get at least:
1 cpu booted
flat memoryspace
printf working on the console (vga of serial)
areas which are taken by the above.
do I again get into pmap init stuff.
--WjW
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?418AB888.7070305>