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