Thank you all for kind explanation Olivier, Andrew. Thanks,
-----Original Message----- From: Olivier Martin [mailto:[email protected]] Sent: Saturday, April 12, 2014 1:18 AM To: 'Andrew Fish'; [email protected] Cc: [email protected] Subject: Re: [edk2] Passing Non-contiguous memory map to kernel on ARMv8 I have just created a wikipage to answer the question: https://sourceforge.net/apps/mediawiki/tianocore/index.php?title=ArmPlatform Pkg/SparseMemory ... and added support for the ARM Base and Foundation FVP models in SVN 15461 - ArmPlatformPkg/ArmVExpressLibRTSM: Added support for the additional 2GB memory of DRAM on FVP. Here is the example of the Foundation Model DRAM: 0x00_8000_0000 0x00_FFFF_FFFF DRAM (0GB - 2GB) DRAM (0GB - 2GB) 2GB S/NS 0x08_8000_0000 0x09_FFFF_FFFF DRAM (2GB - 8GB) DRAM (2GB - 8GB) 6GB S/NS Source: http://infocenter.arm.com/help/topic/com.arm.doc.dui0677c/BBACIHDC.html Note: I only added 2GB from the extra 6GB because the Base FVP model has only 2GB by default at 0x08_8000_0000. > -----Original Message----- > From: Andrew Fish [mailto:[email protected]] > Sent: 11 April 2014 16:43 > To: [email protected] > Cc: Olivier Martin; [email protected] > Subject: Re: [edk2] Passing Non-contiguous memory map to kernel on > ARMv8 > > > On Apr 11, 2014, at 3:11 AM, Youngmin Nam <[email protected]> > wrote: > > > Hello Olivier and Expert, > > > > I am trying to pass the non-contiguous physical memory map to kernel > on ARMv8. > > > > Can the UEFI pass non-contiguous physical memory area to the kernel? > > > > Yes > > > I mean, Physical memory is divided into 0x80000000-0xFFFFFFFF(2GB) > and 0x880000000- 0xFFFFFFFFF(30GB). > > > > If possible, Could you explain how to describe in UEFI? > > > > The platform passes up the info in the EFI Memory map. So that is a > gBS->GetMemoryMap() call. > The shell has a memmap command that dumps the data. > > > How to add memory regions is not defined in UEFI, but it is defined in > PI. > > The region is added via gDS->AddMemorySpace() > > The initial map is based on EFI_HOB_TYPE_RESOURCE_DESCRIPTOR HOBs > passed into the DXE Core > > https://svn.code.sf.net/p/edk2/code/trunk/edk2/MdeModulePkg/Core/Dxe/Gc > d/Gcd.c CoreInitializeGcdServices() > > So platform specific code needs to build the HOB or call gDS- > >AddMemorySpace(). > > Thanks, > > Andrew Fish > > > Otherwise, Could you let me know the reason? > > > > Thanks, > > > > > > --------------------------------------------------------------------- > --------- > > Put Bad Developers to Shame > > Dominate Development with Jenkins Continuous Integration > > Continuously Automate Build, Test & Deployment > > Start a new project now. Try Jenkins in the cloud. > > http://p.sf.net/sfu/13600_Cloudbees > > _______________________________________________ > > edk2-devel mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/edk2-devel > > ---------------------------------------------------------------------------- -- Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Build, Test & Deployment Start a new project now. Try Jenkins in the cloud. http://p.sf.net/sfu/13600_Cloudbees _______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel ------------------------------------------------------------------------------ Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Build, Test & Deployment Start a new project now. Try Jenkins in the cloud. http://p.sf.net/sfu/13600_Cloudbees _______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel
