Set gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize to 16, which determines the maximum "I/O address width".
This ensures, through the BuildCpuHob() call in "ArmPkg/Drivers/CpuPei/CpuPei.c", that the inital I/O Space Map will consist of a 16-bit wide "splittable" entry, when the DXE core starts (see CoreInitializeGcdServices() in "MdeModulePkg/Core/Dxe/Gcd/Gcd.c"): GCD:Initial GCD I/O Space Map GCDIoType Range ========== ================================= NonExist 0000000000000000-000000000000FFFF Otherwise this range would have size 0, and (since it could not be split) any gDS->AddIoSpace() calls would fail. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <[email protected]> Reviewed-by: Olivier Martin <[email protected]> --- ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc b/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc index 29d0778..1977610 100644 --- a/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc +++ b/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc @@ -156,6 +156,12 @@ gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdShellFile|{ 0x83, 0xA5, 0x04, 0x7C, 0x3E, 0x9E, 0x1C, 0x4F, 0xAD, 0x65, 0xE0, 0x52, 0x68, 0xD0, 0xB4, 0xD1 } !endif + # + # The maximum physical I/O addressability of the processor, set with + # BuildCpuHob(). + # + gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize|16 + [PcdsDynamicDefault.common] ## If TRUE, OvmfPkg/AcpiPlatformDxe will not wait for PCI # enumeration to complete before installing ACPI tables. -- 1.8.3.1 ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel
