Hello list, A success story!
I forgot to include intel_iommu=on on the kernel command line (and then to use a kernel which supports it). Summary: Laptop: HP 8530p BIOS Revision: F.0E tboot revision: changeset: 172:da3ebacc9b6d kernel: 2.6.30.6 with CONFIG_DMAR=yes grub: title tboot.hg + Ubuntu 9.04, kernel 2.6.30.6 root (hd0,1) kernel /tboot.gz logging=vga,memory,serial module /vmlinuz-2.6.30.6 root=/dev/sda3 ro intel_iommu=on module /initrd.img-2.6.30.6 module /GM45_PM45_SINIT_19.BIN boot This works! HOWEVER: Using BIOS revision F.09 (and I suspect, any earlier version) will BRICK THE LAPTOP. I did not try BIOS revision F.0C. Cheers, -Jon Jonathan M. McCune wrote: > Hi Shane, > > No change meant "fail." However, I am now trying with BIOS version > F.0E, and SENTER appears to work. I say "appears" because Linux doesn't > actually succeed in booting, and this laptop doesn't have a serial port > to capture the output. I'm using Ubuntu 9.04 with their kernel > 2.6.28-11-generic. > > title tboot.hg + Ubuntu 9.04, kernel 2.6.28-11-generic > root (hd0,1) > kernel /tboot.gz logging=vga,memory > module /vmlinuz-2.6.28-11-generic root=/dev/sda3 ro > module /initrd.img-2.6.28-11-generic > module /GM45_PM45_SINIT_19.BIN > boot > > The errors are to do with the SATA controller and with USB. I've been > playing with some BIOS settings which have been impacting the way in > which things fail. I'm planning to experiment further with these > settings and also try a newer kernel. Any suggestions are much appreciated. > > Cheers, > -Jon > > > > Wang, Shane wrote: >> Hi all, >> >> For Hal's question, I didn't get any message/hint to clear the flag and >> restore the laptop by removing the RTC battery. >> The flag should be in MSR register on the chipset. >> >> Jon, did you succeed to restore your laptop? Or, does "no change" mean >> "fail"? >> >> Shane >> >> Jonathan M. McCune wrote: >> >>> Hi Hal et al., >>> >>> When I had this problem on an 8530p, I tried the following >>> (unsuccessfully) to restore the machine to a state where it will boot: >>> >>> > 1. Remove memory on left slot (as shown in DIMM1.jpg) and restart >>> the unit. >>> >>> No change. >>> >>> > 2. Remove the memory on the right slot, replace it back and restart >>> the unit (keep the left slot still empty). >>> >>> No change. >>> >>> > 3. Replace with memory on the right slot with another one that has >>> a different frequency (e.g. if you have 800Mhz DIMM replace it with >>> 667Mhz one). Keep the left slot still empty. >>> >>> I don't have a DIMM of a different speed lying around. I have one >>> other model of HP laptop but it takes the identical stuff. I tried it >>> anyways. No change. >>> >>> > 4. Remove the RTC battery (will find it next to DIMMs) and let it >>> stay there for a while. After that connect it back and restart the >>> unit. >>> >>> Left DIMM still out. I left the battery out for a few minutes and >>> tried booting up with it removed. No change. I also removed the >>> CD-ROM drive and tried again. No change. >>> >>> I left the battery out for about half hour, then put it back in, then >>> tried booting up with the left DIMM still removed. No change. >>> >>> Cheers, >>> -Jon >>> >>> >>> Hal Finney wrote: >>> >>>> Thanks very much for the responses. Unfortunately I can't give you >>>> the >>>> BIOS version because the machine is a brick. I am at a conference >>>> this >>>> week so it may take a few days to get it fixed. >>>> >>>> The first time it broke I used the 20090330 version of tboot, with >>>> the latest SINIT downloaded from SourceForge. The second time, this >>>> past weekend, I believe I used tboot built from the mercurial tip, >>>> which I >>>> had downloaded moments before. >>>> >>>> I am not sure how to proceed after I get my laptop fixed. I can tell >>>> you what BIOS version is in the new one, but I will be hesitant to do >>>> another run of tboot to see if it breaks it again. Last time, they >>>> replaced the motherboard, so I don't expect that the new BIOS version >>>> will necessarily be the same as the one that broke. >>>> >>>> As far as the hang, I believe it occured immediately after the >>>> GETSEC[SENTER]. The display went blank. The one thing I noticed, at >>>> least the second time, is that the disk drive light was flickering in >>>> a smooth, uniform pattern. Maybe 30 times a second, just flickering >>>> on >>>> and off uniformly. This kind of worried me as I wondered if the >>>> failure mode was trashing my disk. After a few seconds, I pressed and >>>> held the power button to turn the laptop off. Trying to turn it back >>>> on led to the problem I described, where it repeatedly turns itself >>>> back off (and back on). >>>> >>>> One question, would you think that removing and replacing the RTC >>>> battery might clear enough internal state to let it boot? Any other >>>> interventions or resets that might be possible if I take the laptop >>>> apart somewhat? HP does have instructions to do so on the web site. >>>> >>>> Hal Finney >>>> >>>> On Mon, Aug 17, 2009 at 6:18 PM, Wang, Shane<shane.w...@intel.com> >>>> wrote: >>>> >>>>> Hi Hal, >>>>> >>>>> The reset behavior seems like it is due to the secret flag of TXT. >>>>> It looks like BIOS ACM does not clear the secret flag of TXT when >>>>> hang and reset happen. >>>>> >>>>> What version of SINIT and tboot are you using on that laptop? >>>>> What did you do to get hang? hang where? >>>>> >>>>> I am trying to find where the root cause is. >>>>> >>>>> Thanks. >>>>> Shane >>>>> >>>>> Hal Finney wrote: >>>>> >>>>>> I was traveling recently, and I wanted to do some experiments with >>>>>> TXT on the road, so I bought an HP laptop that supports the >>>>>> technology. It is an HP EliteBook 6930p. I got it set up with >>>>>> Linux and tboot, enabled TPM, VT and TXT, and tried booting tboot >>>>>> and a Linux kernel. >>>>>> >>>>>> Something went wrong. My laptop hung and I restarted it. But it >>>>>> didn't start properly. The power light and other lights came on, >>>>>> but the display did not light up. The fan started and disk began >>>>>> spinning, but after about a second, the whole thing powered down. >>>>>> The fan and disk stopped, and all of the lights went out. Then, >>>>>> after a few seconds, it turned itself back on. But once again, >>>>>> after starting the fan and disk, and before lighting the display, >>>>>> the laptop shut off. This cycle would repeat indefinitely, the >>>>>> laptop turning itself on and off. I have to make it stop by >>>>>> pressing and holding the power button. >>>>>> >>>>>> In short, my laptop was completely broken and useless. >>>>>> >>>>>> Fortunately, being new it was covered by HP's warranty. They >>>>>> talked me through the usual minor fixits on the phone, removing >>>>>> the disk and such, and nothing helped. They finally told me to >>>>>> take it to an authorized repair shop. The nearest one is 80 miles >>>>>> away so it was not super convenient, but I did it. Unfortunately >>>>>> it meant that I was not able to take the laptop on my trip and was >>>>>> not able to do my experiments. >>>>>> >>>>>> I got back this week and picked up my laptop from the repair shop. >>>>>> They had replaced the motherboard and it worked fine. So I tried >>>>>> again. I enabled the new TPM, got VT and TXT enabled, and tried >>>>>> launching tboot. >>>>>> >>>>>> It broke again. >>>>>> >>>>>> Once again my laptop is useless. It repeatedly turns itself on and >>>>>> off, and does not even light up the display. It does not get far >>>>>> enough into BIOS to boot from a CD or any other medium. >>>>>> >>>>>> I am a little worried about once again demanding that HP fix this >>>>>> machine under the terms of my warranty. I did not go into any >>>>>> detail about what I was doing when it broke the first time. In >>>>>> fact I thought it was probably just a defective machine; I did not >>>>>> necessarily connect it that much with tboot since I was just >>>>>> getting started with it and had only used it for an hour or so. >>>>>> But with the same thing happening twice now, it is clear that I am >>>>>> breaking it. And I am not running Windows, I am using experimental >>>>>> software, etc. Of course the machine is claimed to support TXT, so >>>>>> obviously it should not break from running tboot. But this is such >>>>>> a little-known and new technology that I'm sure only a few people >>>>>> at HP are familiar with it. I am not sure how to proceed with >>>>>> regard to the warranty. >>>>>> >>>>>> I wonder if anyone at HP reading this might be able to comment? It >>>>>> will not be good if HP laptops are turned into bricks by running >>>>>> tboot. >>>>>> >>>>>> Hal Finney >>>>>> >>>>>> ------------------------------------------------------------------------------ >>>>>> Let Crystal Reports handle the reporting - Free Crystal Reports >>>>>> 2008 30-Day trial. Simplify your report design, integration and >>>>>> deployment - and focus on what you do best, core application >>>>>> coding. Discover what's new with Crystal Reports now. >>>>>> http://p.sf.net/sfu/bobj-july >>>>>> _______________________________________________ >>>>>> tboot-devel mailing list >>>>>> tboot-devel@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/tboot-devel >>>>>> >>>> ------------------------------------------------------------------------------ >>>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 >>>> 30-Day trial. Simplify your report design, integration and >>>> deployment - and focus on what you do best, core application coding. >>>> Discover what's new with >>>> Crystal Reports now. http://p.sf.net/sfu/bobj-july >>>> _______________________________________________ >>>> tboot-devel mailing list >>>> tboot-devel@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/tboot-devel >>>> >> >> > > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > tboot-devel mailing list > tboot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/tboot-devel > ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ tboot-devel mailing list tboot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tboot-devel
