| Message ID | 1473408939-18044-1-git-send-email-ard.biesheuvel@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Fri, Sep 09, 2016 at 09:15:38AM +0100, Ard Biesheuvel wrote: > We can cover the entire MMIO range and 512 GB of memory starting at > 0x80_0000_0000 using 40 bits of VA space, both in the page tables and > in the GCD memory map. > > Contributed-under: TianoCore Contribution Agreement 1.0 > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org> > --- > Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc | 5 +++++ > Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc | 5 +++++ > 2 files changed, 10 insertions(+) > > diff --git a/Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc b/Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc > index 8a100e0d9a3c..0a987cc3b118 100644 > --- a/Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc > +++ b/Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc > @@ -375,6 +375,11 @@ DEFINE DO_KCS = 0 > # Size of the region used by UEFI in permanent memory (Reserved 64MB) > gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize|0x04000000 > > + # 40 bits of VA space is sufficient to support up to 512 GB of RAM in the > + # range 0x80_0000_0000 - 0xFF_FFFF_FFFF (all platform and PCI MMIO is below > + # that) > + gEmbeddedTokenSpaceGuid.PcdPrePiCpuMemorySize|40 > + > # > # ARM PrimeCell > # > diff --git a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc > index 38c3309dcff1..72ceb8b6994e 100644 > --- a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc > +++ b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc > @@ -382,6 +382,11 @@ DEFINE DO_KCS = 1 > # Size of the region used by UEFI in permanent memory (Reserved 64MB) > gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize|0x04000000 > > + # 40 bits of VA space is sufficient to support up to 512 GB of RAM in the > + # range 0x80_0000_0000 - 0xFF_FFFF_FFFF (all platform and PCI MMIO is below > + # that) > + gEmbeddedTokenSpaceGuid.PcdPrePiCpuMemorySize|40 > + > # > # ARM PrimeCell > # > -- > 2.7.4 > _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
diff --git a/Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc b/Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc index 8a100e0d9a3c..0a987cc3b118 100644 --- a/Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc +++ b/Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc @@ -375,6 +375,11 @@ DEFINE DO_KCS = 0 # Size of the region used by UEFI in permanent memory (Reserved 64MB) gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize|0x04000000 + # 40 bits of VA space is sufficient to support up to 512 GB of RAM in the + # range 0x80_0000_0000 - 0xFF_FFFF_FFFF (all platform and PCI MMIO is below + # that) + gEmbeddedTokenSpaceGuid.PcdPrePiCpuMemorySize|40 + # # ARM PrimeCell # diff --git a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc index 38c3309dcff1..72ceb8b6994e 100644 --- a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc +++ b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc @@ -382,6 +382,11 @@ DEFINE DO_KCS = 1 # Size of the region used by UEFI in permanent memory (Reserved 64MB) gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize|0x04000000 + # 40 bits of VA space is sufficient to support up to 512 GB of RAM in the + # range 0x80_0000_0000 - 0xFF_FFFF_FFFF (all platform and PCI MMIO is below + # that) + gEmbeddedTokenSpaceGuid.PcdPrePiCpuMemorySize|40 + # # ARM PrimeCell #
We can cover the entire MMIO range and 512 GB of memory starting at 0x80_0000_0000 using 40 bits of VA space, both in the page tables and in the GCD memory map. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> --- Platforms/AMD/Styx/CelloBoard/CelloBoard.dsc | 5 +++++ Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc | 5 +++++ 2 files changed, 10 insertions(+) -- 2.7.4 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel