> On Oct 16, 2014, at 7:16 PM, Gao, Liming <[email protected]> wrote: > > Andrew: > If TemporaryRamSupportPpi is installed, it will migrate the full temp memory > to permanent memory. If it is not ready, PeiCore will migrate the full temp > memory. After memory is migrated, PeiCore will convert PPI pointers in temp > memory. You can see ConvertPpiPointers() in MdeModulePkg\Core\Pei\Ppi\Ppi.c > that covers all temp memory: heap, stack and hole. So, PPI pointers should be > converted to the permanent memory. But, if PPI data is the temp memory, it > can't be converted by PeiCore, because PeiCore doesn't understand the > specific PPI data format. >
Liming, In my case the only thing in temp memory is the PpiArray that is passed in the PEI Core entry point. We have a custom PEI Core entry point lib instance that initializes our debugger. So we are just making a copy off the PpiArray from SEC and appending a PPI. We are just copying the ROM based EFI_PEI_PPI_DESCRIPTOR on to the stack to pass it into the PEI Core entry point. All the internal pointers point to ROM, so they should be OK. The problem is the PPI disappears from the list (gets zeroed out). Thanks, Andrew Fish > Thanks > Liming > -----Original Message----- > From: Andrew Fish [mailto:[email protected]] > Sent: Monday, September 29, 2014 10:06 AM > To: [email protected] > Subject: [edk2] PPIs passed into the PEI Core entry point get zero'ed out > when permanent memory is installed? > > I don't see any place in the PI specs that state the PPIs passed from SEC to > the PEI core don't make it past memory getting discovered. > > The PPI lists getting passed up are on the stack and were allocated prior to > calling the PEI Core Main. Just like: > https://svn.code.sf.net/p/edk2/code/trunk/edk2/EmulatorPkg/Sec/Sec.c > > I see this failure in the EmulatorPkg and on real hardware too. > > Thanks, > > Andrew Fish > ------------------------------------------------------------------------------ > Slashdot TV. Videos for Nerds. Stuff that Matters. > http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk > _______________________________________________ > edk2-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/edk2-devel > > ------------------------------------------------------------------------------ > Comprehensive Server Monitoring with Site24x7. > Monitor 10 servers for $9/Month. > Get alerted through email, SMS, voice calls or mobile push notifications. > Take corrective actions from your mobile device. > http://p.sf.net/sfu/Zoho > _______________________________________________ > edk2-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/edk2-devel ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel
