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OvmfPkg/QemuFlashFvbServicesRuntimeDxe: Do not expose MMIO in SMM build 

In the SMM build, only an SMM driver is using the address range hence we
do not need to expose the flash MMIO range in EFI runtime mapping.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Julien Grall <julien.grall@linaro.org>
Cc: Justen Jordan L <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Brijesh Singh 2018-07-06 10:00:41 -05:00 committed by Laszlo Ersek
parent 966363d5a3
commit 3b3d016b7b
4 changed files with 70 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockService.c
View File

@ -829,56 +829,6 @@ ValidateFvHeader (
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
MarkIoMemoryRangeForRuntimeAccess (
EFI_PHYSICAL_ADDRESS BaseAddress,
UINTN Length
)
{
EFI_STATUS Status;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;
//
// Mark flash region as runtime memory
//
Status = gDS->RemoveMemorySpace (
BaseAddress,
Length
);
Status = gDS->AddMemorySpace (
EfiGcdMemoryTypeMemoryMappedIo,
BaseAddress,
Length,
EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
);
ASSERT_EFI_ERROR (Status);
Status = gDS->AllocateMemorySpace (
EfiGcdAllocateAddress,
EfiGcdMemoryTypeMemoryMappedIo,
0,
Length,
&BaseAddress,
gImageHandle,
NULL
);
ASSERT_EFI_ERROR (Status);
Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &GcdDescriptor);
ASSERT_EFI_ERROR (Status);
Status = gDS->SetMemorySpaceAttributes (
BaseAddress,
Length,
GcdDescriptor.Attributes | EFI_MEMORY_RUNTIME
);
ASSERT_EFI_ERROR (Status);
return Status;
}
STATIC
EFI_STATUS
InitializeVariableFvHeader (

7
OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockService.h
View File

@ -189,4 +189,11 @@ VOID
InstallVirtualAddressChangeHandler (
VOID
);
EFI_STATUS
MarkIoMemoryRangeForRuntimeAccess (
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINTN Length
);
#endif

50
OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockServiceDxe.c
View File

@ -17,6 +17,7 @@
#include <Guid/EventGroup.h>
#include <Library/DebugLib.h>
#include <Library/DevicePathLib.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/PcdLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeLib.h>
@ -155,3 +156,52 @@ InstallVirtualAddressChangeHandler (
);
ASSERT_EFI_ERROR (Status);
}
EFI_STATUS
MarkIoMemoryRangeForRuntimeAccess (
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINTN Length
)
{
EFI_STATUS Status;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;
//
// Mark flash region as runtime memory
//
Status = gDS->RemoveMemorySpace (
BaseAddress,
Length
);
Status = gDS->AddMemorySpace (
EfiGcdMemoryTypeMemoryMappedIo,
BaseAddress,
Length,
EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
);
ASSERT_EFI_ERROR (Status);
Status = gDS->AllocateMemorySpace (
EfiGcdAllocateAddress,
EfiGcdMemoryTypeMemoryMappedIo,
0,
Length,
&BaseAddress,
gImageHandle,
NULL
);
ASSERT_EFI_ERROR (Status);
Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &GcdDescriptor);
ASSERT_EFI_ERROR (Status);
Status = gDS->SetMemorySpaceAttributes (
BaseAddress,
Length,
GcdDescriptor.Attributes | EFI_MEMORY_RUNTIME
);
ASSERT_EFI_ERROR (Status);
return Status;
}

13
OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockServiceSmm.c
View File

@ -67,3 +67,16 @@ InstallVirtualAddressChangeHandler (
// Nothing.
//
}
EFI_STATUS
MarkIoMemoryRangeForRuntimeAccess (
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINTN Length
)
{
//
// Nothing
//
return EFI_SUCCESS;
}