Error code 0xc0000001 isn't really an error code, but rather an indication that SINIT has finished successfully. SINIT writes this (almost) just before it transitions to the MLE entry point as a way of indicating that it has gotten that far. There is a small window of code that executes after this is written and before the actual jump to the MLE.
Are you are confident that your code never executes (hence Shane's suggestion of making sure that you set the entry point correctly)? Can you post the serial log of your code's execution on the 4GB config? Also, is this a 2 core or 4 core CPU? Joe > From: Wang, Shane [mailto:shane.w...@intel.com] > Sent: Thursday, September 24, 2009 1:51 AM > To: Jonathan M. McCune > Cc: tboot-devel@lists.sourceforge.net > Subject: Re: [tboot-devel] SINIT Exit Point > > OK. > > So, it should not be the problem of entry point. Originally what I mean is > the entry point in > tboot header structure. (see init_txt_heap()) > CONFIG_HIGHMEM4G should be kernel config. When you get "reset" in > GETSEC[SENTER], kernel is > not running. So, I don't think the problem is related to any of kernel > configs. > > Can you check your PMR setting for 4G? vtd_pmr_lo_base/size and > vtd_pmr_hi_base/size. > > This is what I can think related to memory. > > PS: is it convenient for you to send me your serial log of your code? > > Shane > > Jonathan M. McCune wrote: > > Hi Shane, cc list, > > > > Jonathan M. McCune wrote: > >>>> I'm experimenting with SENTER on an HP 8530p with the newest BIOS. > >>>> tboot works without issue. However, when I run my own code, the > >>>> laptop reboots upon invoking SENTER, and LT.ERRORCODE is populated > >>>> with 0xc0000001, or "SINIT Exit Point". I'm at a loss for what I > >>>> am doing wrong based solely on that error message. > > > > This laptop contained 4GB of physical memory in two 2GB DIMMs. I > > removed one of them, leaving the system with only 2GB of physical > > memory. This enables my code to execute successfully. > > > > I realized this when I noticed that despite having CONFIG_HIGHMEM4G=y > > in the kernel config, the system only sees 3GB of memory. I then > > took a closer look at the value read from TXTCR_SINIT_BASE. The > > value is 0x7be00000 with 2GB of RAM in the system, but it changes to > > 0xbfe00000 with 4GB in the system. However, 0xbfe00000 is much closer > > to 3GB than 4GB. > > > > tboot will execute successfully with either amount of memory in the > > system, and also sees 0xbfe00000 in TXTCR_SINIT_BASE with 4GB of RAM > > in the system. > > > > Thus, I'm still not exactly sure what causes my code to fail. > > > > However, I discovered that the chipset in this laptop has an issue > > with making all 4GB of RAM available despite CONFIG_HIGHMEM4G=y, and > > instead requires PAE support to see more than 3GB of RAM (I did > > verify that with CONFIG_HIGHMEM64G=y all 4GB are visible to Linux). > > Here's a thread that discusses this unexpected need for PAE: > > > > http://lkml.indiana.edu/hypermail/linux/kernel/0607.3/1787.html > > > > I'm not sure if these issues are related yet. Suggestions / comments > > / questions welcomed by all. > > > > Thanks, > > -Jon > > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > _______________________________________________ > tboot-devel mailing list > tboot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/tboot-devel ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ tboot-devel mailing list tboot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tboot-devel
