Date: Sat, 18 Jun 2011 10:10:39 +0200 From: Guido Falsi <mad@madpilot.net> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: BTX loader problem on specific hardware Message-ID: <4DFC5D7F.70501@madpilot.net> In-Reply-To: <201106171201.34037.jhb@freebsd.org> References: <20110609152820.GC57263@megatron.madpilot.net> <201106131145.08185.jhb@freebsd.org> <20110617153028.GB37006@megatron.madpilot.net> <201106171201.34037.jhb@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On 06/17/11 18:01, John Baldwin wrote: >> I'm not sure, but maybe rdmsr or wrmsr are generating exceptions which >> are not managed by BTX? I could be wrong, I really dont' know that much >> about the internals of CPUs. > > Well, the old BTX didn't allow full access to CR registers. Running in > real mode, there should be no problems with any MSR accesses though in > the new BTX. I thought that, but I could not identify any other big diffs from the other BIOS I had a look at. >> I obviously have the disassembled code available, but not posting it >> here because I'm not sure what policies there are about disassembled >> code on the lists. > > You can post a URL perhaps (or just send it to me directly if you wish). > http://www.madpilot.net/HP6005Pro/ I put there a disassembled.txt with the relevant parts disassembled and put in some kind of order(you'll anyway need to jump a round a little, could not make it any better). There's a small comment identifying the critical area. I put there a dump of the full BIOS and the IDT, just in case. Thank you again! -- Guido Falsi <mad@madpilot.net>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4DFC5D7F.70501>