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/** @file
This file is the library for SA DXE Policy initialization.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "SaPolicyInitDxe.h"
#define SA_VTD_RMRR_USB_LENGTH 0x20000
GLOBAL_REMOVE_IF_UNREFERENCED EFI_PHYSICAL_ADDRESS mAddress;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSize;
/**
Update RMRR Base and Limit Address for USB.
**/
VOID
UpdateRmrrUsbAddress (
IN OUT SA_POLICY_PROTOCOL *SaPolicy
)
{
EFI_STATUS Status;
MISC_DXE_CONFIG *MiscDxeConfig;
Status = GetConfigBlock ((VOID *)SaPolicy, &gMiscDxeConfigGuid, (VOID *)&MiscDxeConfig);
ASSERT_EFI_ERROR (Status);
if (1) {
mSize = EFI_SIZE_TO_PAGES(SA_VTD_RMRR_USB_LENGTH);
mAddress = SIZE_4GB;
Status = (gBS->AllocatePages) (
AllocateMaxAddress,
EfiReservedMemoryType,
mSize,
&mAddress
);
ASSERT_EFI_ERROR (Status);
MiscDxeConfig->RmrrUsbBaseAddress[0] = mAddress;
MiscDxeConfig->RmrrUsbBaseAddress[1] = mAddress + SA_VTD_RMRR_USB_LENGTH - 1;
}
}
/**
Get data for platform policy from setup options.
@param[in] SaPolicy The pointer to get SA Policy protocol instance
@retval EFI_SUCCESS Operation success.
**/
EFI_STATUS
EFIAPI
UpdateDxeSaPolicy (
IN OUT SA_POLICY_PROTOCOL *SaPolicy
)
{
UpdateRmrrUsbAddress (SaPolicy);
return EFI_SUCCESS;
}
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