mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-11 14:28:08 +01:00
414 lines
14 KiB
C
414 lines
14 KiB
C
|
/** @file
|
||
|
|
Produces the SMM CPU I/O Protocol.
|
||
|
|
|
||
|
|
Copyright (c) 2009 - 2010, 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
|
||
|
|
which 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 "CpuIo2Smm.h"
|
||
|
|
|
||
|
|
//
|
||
|
|
// Handle for the SMM CPU I/O Protocol
|
||
|
|
//
|
||
|
|
EFI_HANDLE mHandle = NULL;
|
||
|
|
|
||
|
|
//
|
||
|
|
// SMM CPU I/O Protocol instance
|
||
|
|
//
|
||
|
|
EFI_SMM_CPU_IO2_PROTOCOL mSmmCpuIo2 = {
|
||
|
|
{
|
||
|
|
CpuMemoryServiceRead,
|
||
|
|
CpuMemoryServiceWrite
|
||
|
|
},
|
||
|
|
{
|
||
|
|
CpuIoServiceRead,
|
||
|
|
CpuIoServiceWrite
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
//
|
||
|
|
// Lookup table for increment values based on transfer widths
|
||
|
|
//
|
||
|
|
UINT8 mStride[] = {
|
||
|
|
1, // SMM_IO_UINT8
|
||
|
|
2, // SMM_IO_UINT16
|
||
|
|
4, // SMM_IO_UINT32
|
||
|
|
8 // SMM_IO_UINT64
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
Check parameters to a SMM CPU I/O Protocol service request.
|
||
|
|
|
||
|
|
@param[in] MmioOperation TRUE for an MMIO operation, FALSE for I/O Port operation.
|
||
|
|
@param[in] Width Signifies the width of the I/O operations.
|
||
|
|
@param[in] Address The base address of the I/O operations. The caller is
|
||
|
|
responsible for aligning the Address if required.
|
||
|
|
@param[in] Count The number of I/O operations to perform.
|
||
|
|
@param[in] Buffer For read operations, the destination buffer to store
|
||
|
|
the results. For write operations, the source buffer
|
||
|
|
from which to write data.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The data was read from or written to the device.
|
||
|
|
@retval EFI_UNSUPPORTED The Address is not valid for this system.
|
||
|
|
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
CpuIoCheckParameter (
|
||
|
|
IN BOOLEAN MmioOperation,
|
||
|
|
IN EFI_SMM_IO_WIDTH Width,
|
||
|
|
IN UINT64 Address,
|
||
|
|
IN UINTN Count,
|
||
|
|
IN VOID *Buffer
|
||
|
|
)
|
||
|
|
{
|
||
|
|
UINT64 MaxCount;
|
||
|
|
UINT64 Limit;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Check to see if Buffer is NULL
|
||
|
|
//
|
||
|
|
if (Buffer == NULL) {
|
||
|
|
return EFI_INVALID_PARAMETER;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Check to see if Width is in the valid range
|
||
|
|
//
|
||
|
|
if (Width < 0 || Width > SMM_IO_UINT64) {
|
||
|
|
return EFI_INVALID_PARAMETER;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Check to see if Width is in the valid range for I/O Port operations
|
||
|
|
//
|
||
|
|
if (!MmioOperation && (Width == SMM_IO_UINT64)) {
|
||
|
|
return EFI_INVALID_PARAMETER;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Check to see if any address associated with this transfer exceeds the maximum
|
||
|
|
// allowed address. The maximum address implied by the parameters passed in is
|
||
|
|
// Address + Size * Count. If the following condition is met, then the transfer
|
||
|
|
// is not supported.
|
||
|
|
//
|
||
|
|
// Address + Size * Count > (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS) + 1
|
||
|
|
//
|
||
|
|
// Since MAX_ADDRESS can be the maximum integer value supported by the CPU and Count
|
||
|
|
// can also be the maximum integer value supported by the CPU, this range
|
||
|
|
// check must be adjusted to avoid all overflow conditions.
|
||
|
|
//
|
||
|
|
// The following form of the range check is equivalent but assumes that
|
||
|
|
// MAX_ADDRESS and MAX_IO_PORT_ADDRESS are of the form (2^n - 1).
|
||
|
|
//
|
||
|
|
Limit = (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS);
|
||
|
|
if (Count == 0) {
|
||
|
|
if (Address > Limit) {
|
||
|
|
return EFI_UNSUPPORTED;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
MaxCount = RShiftU64 (Limit, Width);
|
||
|
|
if (MaxCount < (Count - 1)) {
|
||
|
|
return EFI_UNSUPPORTED;
|
||
|
|
}
|
||
|
|
if (Address > LShiftU64 (MaxCount - Count + 1, Width)) {
|
||
|
|
return EFI_UNSUPPORTED;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Check to see if Address is aligned
|
||
|
|
//
|
||
|
|
if ((Address & (UINT64)(mStride[Width] - 1)) != 0) {
|
||
|
|
return EFI_UNSUPPORTED;
|
||
|
|
}
|
||
|
|
|
||
|
|
return EFI_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Reads memory-mapped registers.
|
||
|
|
|
||
|
|
The I/O operations are carried out exactly as requested. The caller is
|
||
|
|
responsible for any alignment and I/O width issues that the bus, device,
|
||
|
|
platform, or type of I/O might require.
|
||
|
|
|
||
|
|
@param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
|
||
|
|
@param[in] Width Signifies the width of the I/O operations.
|
||
|
|
@param[in] Address The base address of the I/O operations. The caller is
|
||
|
|
responsible for aligning the Address if required.
|
||
|
|
@param[in] Count The number of I/O operations to perform.
|
||
|
|
@param[out] Buffer For read operations, the destination buffer to store
|
||
|
|
the results. For write operations, the source buffer
|
||
|
|
from which to write data.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The data was read from or written to the device.
|
||
|
|
@retval EFI_UNSUPPORTED The Address is not valid for this system.
|
||
|
|
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
|
||
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
|
||
|
|
lack of resources
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
CpuMemoryServiceRead (
|
||
|
|
IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
|
||
|
|
IN EFI_SMM_IO_WIDTH Width,
|
||
|
|
IN UINT64 Address,
|
||
|
|
IN UINTN Count,
|
||
|
|
OUT VOID *Buffer
|
||
|
|
)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
UINT8 Stride;
|
||
|
|
UINT8 *Uint8Buffer;
|
||
|
|
|
||
|
|
Status = CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer);
|
||
|
|
if (EFI_ERROR (Status)) {
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Select loop based on the width of the transfer
|
||
|
|
//
|
||
|
|
Stride = mStride[Width];
|
||
|
|
for (Uint8Buffer = Buffer; Count > 0; Address += Stride, Uint8Buffer += Stride, Count--) {
|
||
|
|
if (Width == SMM_IO_UINT8) {
|
||
|
|
*Uint8Buffer = MmioRead8 ((UINTN)Address);
|
||
|
|
} else if (Width == SMM_IO_UINT16) {
|
||
|
|
*((UINT16 *)Uint8Buffer) = MmioRead16 ((UINTN)Address);
|
||
|
|
} else if (Width == SMM_IO_UINT32) {
|
||
|
|
*((UINT32 *)Uint8Buffer) = MmioRead32 ((UINTN)Address);
|
||
|
|
} else if (Width == SMM_IO_UINT64) {
|
||
|
|
*((UINT64 *)Uint8Buffer) = MmioRead64 ((UINTN)Address);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return EFI_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Writes memory-mapped registers.
|
||
|
|
|
||
|
|
The I/O operations are carried out exactly as requested. The caller is
|
||
|
|
responsible for any alignment and I/O width issues that the bus, device,
|
||
|
|
platform, or type of I/O might require.
|
||
|
|
|
||
|
|
@param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
|
||
|
|
@param[in] Width Signifies the width of the I/O operations.
|
||
|
|
@param[in] Address The base address of the I/O operations. The caller is
|
||
|
|
responsible for aligning the Address if required.
|
||
|
|
@param[in] Count The number of I/O operations to perform.
|
||
|
|
@param[in] Buffer For read operations, the destination buffer to store
|
||
|
|
the results. For write operations, the source buffer
|
||
|
|
from which to write data.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The data was read from or written to the device.
|
||
|
|
@retval EFI_UNSUPPORTED The Address is not valid for this system.
|
||
|
|
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
|
||
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
|
||
|
|
lack of resources
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
CpuMemoryServiceWrite (
|
||
|
|
IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
|
||
|
|
IN EFI_SMM_IO_WIDTH Width,
|
||
|
|
IN UINT64 Address,
|
||
|
|
IN UINTN Count,
|
||
|
|
IN VOID *Buffer
|
||
|
|
)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
UINT8 Stride;
|
||
|
|
UINT8 *Uint8Buffer;
|
||
|
|
|
||
|
|
Status = CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer);
|
||
|
|
if (EFI_ERROR (Status)) {
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Select loop based on the width of the transfer
|
||
|
|
//
|
||
|
|
Stride = mStride[Width];
|
||
|
|
for (Uint8Buffer = Buffer; Count > 0; Address += Stride, Uint8Buffer += Stride, Count--) {
|
||
|
|
if (Width == SMM_IO_UINT8) {
|
||
|
|
MmioWrite8 ((UINTN)Address, *Uint8Buffer);
|
||
|
|
} else if (Width == SMM_IO_UINT16) {
|
||
|
|
MmioWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));
|
||
|
|
} else if (Width == SMM_IO_UINT32) {
|
||
|
|
MmioWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));
|
||
|
|
} else if (Width == SMM_IO_UINT64) {
|
||
|
|
MmioWrite64 ((UINTN)Address, *((UINT64 *)Uint8Buffer));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return EFI_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Reads I/O registers.
|
||
|
|
|
||
|
|
The I/O operations are carried out exactly as requested. The caller is
|
||
|
|
responsible for any alignment and I/O width issues that the bus, device,
|
||
|
|
platform, or type of I/O might require.
|
||
|
|
|
||
|
|
@param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
|
||
|
|
@param[in] Width Signifies the width of the I/O operations.
|
||
|
|
@param[in] Address The base address of the I/O operations. The caller is
|
||
|
|
responsible for aligning the Address if required.
|
||
|
|
@param[in] Count The number of I/O operations to perform.
|
||
|
|
@param[out] Buffer For read operations, the destination buffer to store
|
||
|
|
the results. For write operations, the source buffer
|
||
|
|
from which to write data.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The data was read from or written to the device.
|
||
|
|
@retval EFI_UNSUPPORTED The Address is not valid for this system.
|
||
|
|
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
|
||
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
|
||
|
|
lack of resources
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
CpuIoServiceRead (
|
||
|
|
IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
|
||
|
|
IN EFI_SMM_IO_WIDTH Width,
|
||
|
|
IN UINT64 Address,
|
||
|
|
IN UINTN Count,
|
||
|
|
OUT VOID *Buffer
|
||
|
|
)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
UINT8 Stride;
|
||
|
|
UINT8 *Uint8Buffer;
|
||
|
|
|
||
|
|
Status = CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer);
|
||
|
|
if (EFI_ERROR (Status)) {
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Select loop based on the width of the transfer
|
||
|
|
//
|
||
|
|
Stride = mStride[Width];
|
||
|
|
for (Uint8Buffer = Buffer; Count > 0; Address += Stride, Uint8Buffer += Stride, Count--) {
|
||
|
|
if (Width == SMM_IO_UINT8) {
|
||
|
|
*Uint8Buffer = IoRead8 ((UINTN)Address);
|
||
|
|
} else if (Width == SMM_IO_UINT16) {
|
||
|
|
*((UINT16 *)Uint8Buffer) = IoRead16 ((UINTN)Address);
|
||
|
|
} else if (Width == SMM_IO_UINT32) {
|
||
|
|
*((UINT32 *)Uint8Buffer) = IoRead32 ((UINTN)Address);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return EFI_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Write I/O registers.
|
||
|
|
|
||
|
|
The I/O operations are carried out exactly as requested. The caller is
|
||
|
|
responsible for any alignment and I/O width issues that the bus, device,
|
||
|
|
platform, or type of I/O might require.
|
||
|
|
|
||
|
|
@param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
|
||
|
|
@param[in] Width Signifies the width of the I/O operations.
|
||
|
|
@param[in] Address The base address of the I/O operations. The caller is
|
||
|
|
responsible for aligning the Address if required.
|
||
|
|
@param[in] Count The number of I/O operations to perform.
|
||
|
|
@param[in] Buffer For read operations, the destination buffer to store
|
||
|
|
the results. For write operations, the source buffer
|
||
|
|
from which to write data.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The data was read from or written to the device.
|
||
|
|
@retval EFI_UNSUPPORTED The Address is not valid for this system.
|
||
|
|
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
|
||
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
|
||
|
|
lack of resources
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
CpuIoServiceWrite (
|
||
|
|
IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
|
||
|
|
IN EFI_SMM_IO_WIDTH Width,
|
||
|
|
IN UINT64 Address,
|
||
|
|
IN UINTN Count,
|
||
|
|
IN VOID *Buffer
|
||
|
|
)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
UINT8 Stride;
|
||
|
|
UINT8 *Uint8Buffer;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Make sure the parameters are valid
|
||
|
|
//
|
||
|
|
Status = CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer);
|
||
|
|
if (EFI_ERROR (Status)) {
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Select loop based on the width of the transfer
|
||
|
|
//
|
||
|
|
Stride = mStride[Width];
|
||
|
|
for (Uint8Buffer = (UINT8 *)Buffer; Count > 0; Address += Stride, Uint8Buffer += Stride, Count--) {
|
||
|
|
if (Width == SMM_IO_UINT8) {
|
||
|
|
IoWrite8 ((UINTN)Address, *Uint8Buffer);
|
||
|
|
} else if (Width == SMM_IO_UINT16) {
|
||
|
|
IoWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));
|
||
|
|
} else if (Width == SMM_IO_UINT32) {
|
||
|
|
IoWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return EFI_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
The module Entry Point SmmCpuIoProtocol driver
|
||
|
|
|
||
|
|
@param[in] ImageHandle The firmware allocated handle for the EFI image.
|
||
|
|
@param[in] SystemTable A pointer to the EFI System Table.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The entry point is executed successfully.
|
||
|
|
@retval Other Some error occurs when executing this entry point.
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
SmmCpuIo2Initialize (
|
||
|
|
IN EFI_HANDLE ImageHandle,
|
||
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
||
|
|
)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Copy the SMM CPU I/O Protocol instance into the System Management System Table
|
||
|
|
//
|
||
|
|
CopyMem (&gSmst->SmmIo, &mSmmCpuIo2, sizeof (mSmmCpuIo2));
|
||
|
|
|
||
|
|
//
|
||
|
|
// Install the SMM CPU I/O Protocol into the SMM protocol database
|
||
|
|
//
|
||
|
|
Status = gSmst->SmmInstallProtocolInterface (
|
||
|
|
&mHandle,
|
||
|
|
&gEfiSmmCpuIo2ProtocolGuid,
|
||
|
|
EFI_NATIVE_INTERFACE,
|
||
|
|
&mSmmCpuIo2
|
||
|
|
);
|
||
|
|
ASSERT_EFI_ERROR (Status);
|
||
|
|
|
||
|
|
return Status;
|
||
|
|
}
|