| Message ID | 1430494534-4151-3-git-send-email-ard.biesheuvel@linaro.org |
|---|---|
| State | New |
| Headers | show |
diff --git a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigLib/ArmVExpressSysConfig.c b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigLib/ArmVExpressSysConfig.c index 6dfbacd11762..87ecb63c6c23 100644 --- a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigLib/ArmVExpressSysConfig.c +++ b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigLib/ArmVExpressSysConfig.c @@ -13,8 +13,10 @@ **/ #include <Base.h> +#include <Uefi.h> #include <Library/IoLib.h> #include <Library/DebugLib.h> +#include <Library/UefiRuntimeLib.h> #include <Library/ArmPlatformSysConfigLib.h> #include <ArmPlatform.h> @@ -72,6 +74,10 @@ AccessSysCfgRegister ( { UINT32 SysCfgCtrl; + if (EfiGoneVirtual ()) { + return RETURN_UNSUPPORTED; + } + // Clear the COMPLETE bit MmioAnd32(ARM_VE_SYS_CFGSTAT_REG, ~SYS_CFGSTAT_COMPLETE); diff --git a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigLib/ArmVExpressSysConfigLib.inf b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigLib/ArmVExpressSysConfigLib.inf index c1647756efbe..268202cc2038 100644 --- a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigLib/ArmVExpressSysConfigLib.inf +++ b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigLib/ArmVExpressSysConfigLib.inf @@ -33,3 +33,4 @@ [LibraryClasses] BaseLib IoLib + UefiRuntimeLib
The ArmVExpressSysConfigLib library does not (and cannot) runtime remap its MMIO registers, so return RETURN_UNSUPPORTED when trying to use it after calling SetVirtualAddressMap(). Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> --- .../Library/ArmVExpressSysConfigLib/ArmVExpressSysConfig.c | 6 ++++++ .../Library/ArmVExpressSysConfigLib/ArmVExpressSysConfigLib.inf | 1 + 2 files changed, 7 insertions(+)