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@@ -2,374 +2,17 @@
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Produces the SMM CPU I/O Protocol.
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Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
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+Copyright (c) Microsoft Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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-#include "CpuIo2Smm.h"
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+#include <PiSmm.h>
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-//
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-// Handle for the SMM CPU I/O Protocol
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-//
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-EFI_HANDLE mHandle = NULL;
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-
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-//
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-// SMM CPU I/O Protocol instance
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-//
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-EFI_SMM_CPU_IO2_PROTOCOL mSmmCpuIo2 = {
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- {
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- CpuMemoryServiceRead,
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- CpuMemoryServiceWrite
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- },
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- {
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- CpuIoServiceRead,
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- CpuIoServiceWrite
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- }
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-};
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-
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-//
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-// Lookup table for increment values based on transfer widths
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-//
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-UINT8 mStride[] = {
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- 1, // SMM_IO_UINT8
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- 2, // SMM_IO_UINT16
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- 4, // SMM_IO_UINT32
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- 8 // SMM_IO_UINT64
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-};
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-
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-/**
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- Check parameters to a SMM CPU I/O Protocol service request.
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-
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- @param[in] MmioOperation TRUE for an MMIO operation, FALSE for I/O Port operation.
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- @param[in] Width Signifies the width of the I/O operations.
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- @param[in] Address The base address of the I/O operations. The caller is
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- responsible for aligning the Address if required.
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- @param[in] Count The number of I/O operations to perform.
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- @param[in] Buffer For read operations, the destination buffer to store
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- the results. For write operations, the source buffer
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- from which to write data.
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-
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- @retval EFI_SUCCESS The data was read from or written to the device.
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- @retval EFI_UNSUPPORTED The Address is not valid for this system.
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- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
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-
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-**/
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-EFI_STATUS
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-CpuIoCheckParameter (
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- IN BOOLEAN MmioOperation,
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- IN EFI_SMM_IO_WIDTH Width,
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- IN UINT64 Address,
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- IN UINTN Count,
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- IN VOID *Buffer
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- )
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-{
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- UINT64 MaxCount;
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- UINT64 Limit;
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-
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- //
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- // Check to see if Buffer is NULL
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- //
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- if (Buffer == NULL) {
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- return EFI_INVALID_PARAMETER;
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- }
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-
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- //
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- // Check to see if Width is in the valid range
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- //
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- if ((UINT32)Width > SMM_IO_UINT64) {
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- return EFI_INVALID_PARAMETER;
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- }
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-
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- //
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- // Check to see if Width is in the valid range for I/O Port operations
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- //
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- if (!MmioOperation && (Width == SMM_IO_UINT64)) {
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- return EFI_INVALID_PARAMETER;
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- }
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-
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- //
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- // Check to see if any address associated with this transfer exceeds the maximum
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- // allowed address. The maximum address implied by the parameters passed in is
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- // Address + Size * Count. If the following condition is met, then the transfer
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- // is not supported.
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- //
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- // Address + Size * Count > (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS) + 1
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- //
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- // Since MAX_ADDRESS can be the maximum integer value supported by the CPU and Count
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- // can also be the maximum integer value supported by the CPU, this range
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- // check must be adjusted to avoid all overflow conditions.
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- //
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- // The following form of the range check is equivalent but assumes that
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- // MAX_ADDRESS and MAX_IO_PORT_ADDRESS are of the form (2^n - 1).
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- //
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- Limit = (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS);
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- if (Count == 0) {
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- if (Address > Limit) {
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- return EFI_UNSUPPORTED;
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- }
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- } else {
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- MaxCount = RShiftU64 (Limit, Width);
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- if (MaxCount < (Count - 1)) {
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- return EFI_UNSUPPORTED;
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- }
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- if (Address > LShiftU64 (MaxCount - Count + 1, Width)) {
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- return EFI_UNSUPPORTED;
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- }
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- }
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-
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- //
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- // Check to see if Address is aligned
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- //
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- if ((Address & ((UINT64)mStride[Width] - 1)) != 0) {
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- return EFI_UNSUPPORTED;
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- }
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-
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- return EFI_SUCCESS;
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-}
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-
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-/**
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- Reads memory-mapped registers.
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-
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- The I/O operations are carried out exactly as requested. The caller is
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- responsible for any alignment and I/O width issues that the bus, device,
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- platform, or type of I/O might require.
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-
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- @param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
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- @param[in] Width Signifies the width of the I/O operations.
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- @param[in] Address The base address of the I/O operations. The caller is
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- responsible for aligning the Address if required.
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- @param[in] Count The number of I/O operations to perform.
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- @param[out] Buffer For read operations, the destination buffer to store
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- the results. For write operations, the source buffer
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- from which to write data.
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-
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- @retval EFI_SUCCESS The data was read from or written to the device.
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- @retval EFI_UNSUPPORTED The Address is not valid for this system.
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- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
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- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
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- lack of resources
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-
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-**/
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-EFI_STATUS
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-EFIAPI
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-CpuMemoryServiceRead (
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- IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
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- IN EFI_SMM_IO_WIDTH Width,
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- IN UINT64 Address,
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- IN UINTN Count,
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- OUT VOID *Buffer
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- )
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-{
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- EFI_STATUS Status;
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- UINT8 Stride;
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- UINT8 *Uint8Buffer;
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-
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- Status = CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer);
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- if (EFI_ERROR (Status)) {
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- return Status;
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- }
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-
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- //
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- // Select loop based on the width of the transfer
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- //
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- Stride = mStride[Width];
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- for (Uint8Buffer = Buffer; Count > 0; Address += Stride, Uint8Buffer += Stride, Count--) {
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- if (Width == SMM_IO_UINT8) {
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- *Uint8Buffer = MmioRead8 ((UINTN)Address);
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- } else if (Width == SMM_IO_UINT16) {
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- *((UINT16 *)Uint8Buffer) = MmioRead16 ((UINTN)Address);
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- } else if (Width == SMM_IO_UINT32) {
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- *((UINT32 *)Uint8Buffer) = MmioRead32 ((UINTN)Address);
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- } else if (Width == SMM_IO_UINT64) {
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- *((UINT64 *)Uint8Buffer) = MmioRead64 ((UINTN)Address);
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- }
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- }
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- return EFI_SUCCESS;
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-}
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+#include "CpuIo2Mm.h"
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/**
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- Writes memory-mapped registers.
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-
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- The I/O operations are carried out exactly as requested. The caller is
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- responsible for any alignment and I/O width issues that the bus, device,
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- platform, or type of I/O might require.
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-
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- @param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
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- @param[in] Width Signifies the width of the I/O operations.
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- @param[in] Address The base address of the I/O operations. The caller is
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- responsible for aligning the Address if required.
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- @param[in] Count The number of I/O operations to perform.
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- @param[in] Buffer For read operations, the destination buffer to store
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- the results. For write operations, the source buffer
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- from which to write data.
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-
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- @retval EFI_SUCCESS The data was read from or written to the device.
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- @retval EFI_UNSUPPORTED The Address is not valid for this system.
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- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
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- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
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- lack of resources
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-
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-**/
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-EFI_STATUS
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-EFIAPI
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-CpuMemoryServiceWrite (
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- IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
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- IN EFI_SMM_IO_WIDTH Width,
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- IN UINT64 Address,
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- IN UINTN Count,
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- IN VOID *Buffer
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- )
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-{
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- EFI_STATUS Status;
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- UINT8 Stride;
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- UINT8 *Uint8Buffer;
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-
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- Status = CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer);
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- if (EFI_ERROR (Status)) {
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- return Status;
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- }
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-
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- //
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- // Select loop based on the width of the transfer
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- //
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- Stride = mStride[Width];
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- for (Uint8Buffer = Buffer; Count > 0; Address += Stride, Uint8Buffer += Stride, Count--) {
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- if (Width == SMM_IO_UINT8) {
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- MmioWrite8 ((UINTN)Address, *Uint8Buffer);
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- } else if (Width == SMM_IO_UINT16) {
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- MmioWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));
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- } else if (Width == SMM_IO_UINT32) {
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- MmioWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));
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- } else if (Width == SMM_IO_UINT64) {
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- MmioWrite64 ((UINTN)Address, *((UINT64 *)Uint8Buffer));
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- }
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- }
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- return EFI_SUCCESS;
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-}
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-
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-/**
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- Reads I/O registers.
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-
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- The I/O operations are carried out exactly as requested. The caller is
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- responsible for any alignment and I/O width issues that the bus, device,
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- platform, or type of I/O might require.
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-
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- @param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
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- @param[in] Width Signifies the width of the I/O operations.
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- @param[in] Address The base address of the I/O operations. The caller is
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- responsible for aligning the Address if required.
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- @param[in] Count The number of I/O operations to perform.
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- @param[out] Buffer For read operations, the destination buffer to store
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- the results. For write operations, the source buffer
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- from which to write data.
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-
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- @retval EFI_SUCCESS The data was read from or written to the device.
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- @retval EFI_UNSUPPORTED The Address is not valid for this system.
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- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
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- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
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- lack of resources
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-
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-**/
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-EFI_STATUS
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-EFIAPI
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-CpuIoServiceRead (
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- IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
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- IN EFI_SMM_IO_WIDTH Width,
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- IN UINT64 Address,
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- IN UINTN Count,
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- OUT VOID *Buffer
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- )
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-{
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- EFI_STATUS Status;
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- UINT8 Stride;
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- UINT8 *Uint8Buffer;
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-
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- Status = CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer);
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- if (EFI_ERROR (Status)) {
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- return Status;
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- }
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-
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- //
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- // Select loop based on the width of the transfer
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- //
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- Stride = mStride[Width];
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- for (Uint8Buffer = Buffer; Count > 0; Address += Stride, Uint8Buffer += Stride, Count--) {
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- if (Width == SMM_IO_UINT8) {
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- *Uint8Buffer = IoRead8 ((UINTN)Address);
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- } else if (Width == SMM_IO_UINT16) {
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- *((UINT16 *)Uint8Buffer) = IoRead16 ((UINTN)Address);
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- } else if (Width == SMM_IO_UINT32) {
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- *((UINT32 *)Uint8Buffer) = IoRead32 ((UINTN)Address);
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- }
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- }
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-
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- return EFI_SUCCESS;
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-}
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-
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-/**
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- Write I/O registers.
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-
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- The I/O operations are carried out exactly as requested. The caller is
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- responsible for any alignment and I/O width issues that the bus, device,
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- platform, or type of I/O might require.
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-
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- @param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
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- @param[in] Width Signifies the width of the I/O operations.
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- @param[in] Address The base address of the I/O operations. The caller is
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- responsible for aligning the Address if required.
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- @param[in] Count The number of I/O operations to perform.
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- @param[in] Buffer For read operations, the destination buffer to store
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- the results. For write operations, the source buffer
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- from which to write data.
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-
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- @retval EFI_SUCCESS The data was read from or written to the device.
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- @retval EFI_UNSUPPORTED The Address is not valid for this system.
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- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
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- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
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- lack of resources
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-
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-**/
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-EFI_STATUS
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-EFIAPI
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-CpuIoServiceWrite (
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- IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
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- IN EFI_SMM_IO_WIDTH Width,
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- IN UINT64 Address,
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- IN UINTN Count,
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- IN VOID *Buffer
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- )
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-{
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- EFI_STATUS Status;
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- UINT8 Stride;
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- UINT8 *Uint8Buffer;
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-
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- //
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- // Make sure the parameters are valid
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- //
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- Status = CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer);
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- if (EFI_ERROR (Status)) {
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- return Status;
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- }
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-
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- //
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- // Select loop based on the width of the transfer
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- //
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- Stride = mStride[Width];
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- for (Uint8Buffer = (UINT8 *)Buffer; Count > 0; Address += Stride, Uint8Buffer += Stride, Count--) {
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- if (Width == SMM_IO_UINT8) {
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- IoWrite8 ((UINTN)Address, *Uint8Buffer);
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- } else if (Width == SMM_IO_UINT16) {
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- IoWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));
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- } else if (Width == SMM_IO_UINT32) {
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- IoWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));
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- }
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- }
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-
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- return EFI_SUCCESS;
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-}
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-
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-/**
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- The module Entry Point SmmCpuIoProtocol driver
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+ The module Entry Point for Traditional MM CpuIoProtocol driver
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@@ -385,23 +28,5 @@ SmmCpuIo2Initialize (
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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- EFI_STATUS Status;
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-
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- //
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- // Copy the SMM CPU I/O Protocol instance into the System Management System Table
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- //
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- CopyMem (&gMmst->MmIo, &mSmmCpuIo2, sizeof (mSmmCpuIo2));
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-
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- //
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- // Install the SMM CPU I/O Protocol into the MM protocol database
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- //
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- Status = gMmst->MmInstallProtocolInterface (
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- &mHandle,
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- &gEfiSmmCpuIo2ProtocolGuid,
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- EFI_NATIVE_INTERFACE,
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- &mSmmCpuIo2
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- );
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- ASSERT_EFI_ERROR (Status);
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-
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- return Status;
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+ return CommonCpuIo2Initialize ();
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}
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