Date: Fri, 25 Apr 2003 15:22:58 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Ruslan Ermilov <ru@FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: i386/loader compiled with NOFORTH Message-ID: <XFMail.20030425152258.jhb@FreeBSD.org> In-Reply-To: <20030425172227.GA11528@sunbay.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 25-Apr-2003 Ruslan Ermilov wrote: > On Fri, Apr 25, 2003 at 12:07:35PM -0400, John Baldwin wrote: >> >> On 25-Apr-2003 Ruslan Ermilov wrote: >> > On Thu, Apr 24, 2003 at 05:45:15PM -0400, John Baldwin wrote: >> >> >> >> On 24-Apr-2003 Ruslan Ermilov wrote: >> >> > On Thu, Apr 24, 2003 at 02:21:17PM -0400, John Baldwin wrote: >> >> >> >> >> >> On 24-Apr-2003 Ruslan Ermilov wrote: >> >> >> > On 5.x, loader(8) compiled with -DNOFORTH, results in >> >> >> > a system without a console. This does not affect the >> >> >> > RELENG_4. >> >> >> > >> >> >> > Can someone who knows this code please look into it? >> >> >> >> >> >> No kernel console or no loader console? The usual problem with >> >> >> no kernel console on 5.x is lack of device.hints. >> >> >> >> >> > No kernel console. The device.hints, it's there under /boot; >> >> > I only reinstalled loader(8) with -DNOFORTH, and this gave me >> >> > "no console" behavior. Can you try it locally? >> >> >> >> Since device.hints is read in by Forth code, I wouldn't be >> >> surprised if it didn't work. When you break into the 10 >> >> second countdown, do you have any hints set in the loader >> >> environment? >> >> >> > Yes, figured this out by myself already. I've ended up >> > uncommenting the "hints" line in GENERIC config, everything >> > is OK now, and bzip2(1) also works, modulo the memory >> > restrictions -- only level 1 bzipping works that requires >> > ~250K of memory. >> > >> > John, is there a way to fix btx/loader/whatever so that >> > heap memory is not limited to 640K? >> >> Not really. At least, not easily. We load the kernel up above 1mb, >> but we don't know how much memory lives up above 1mb and we assume >> that there is enough for the kernel and that's it. >> > I was referring to this message from loader(8): > > BIOS 639kB/129856kB available memory > > So I thought that the memory allocation in i386/loader is > limited to real mode's 640KB, no? > > Also, IIRC, the installation requirement was 8MB or so, > and the runtime requirement was 4MB (these are 4.x numbers > from my memory), so we can safely assume that we have at > least 4MB of memory? Now that I look at it, I see that > GENERIC kernel in 5.0 is 4.82MB, and so we can probably > always assume that we have 8MB of memory. We assume that we have enough memory to stick the kernel up there, but that's the only assumption we make. :) -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.20030425152258.jhb>