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/** @file
IPMI Serial Over Lan Driver.
Copyright (c) 2018 - 2019, Intel Corporation. All rights reserved.<BR>
Copyright (C) 2026 Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/IpmiCommandLib.h>
#include <IndustryStandard/Ipmi.h>
#define SOL_CMD_RETRY_COUNT 10
/**
Routine Description:
This routine gets the SOL payload status or settings for a specific channel.
Arguments:
@param[in] Channel LAN channel number.
@param[in] ParamSel Configuration parameter selection.
@param[in, out] Data Information returned from BMC.
Returns:
@retval EFI_SUCCESS SOL configuration parameters are successfully read from BMC.
@retval Others SOL configuration parameters could not be read from BMC.
**/
EFI_STATUS
GetSolStatus (
IN UINT8 Channel,
IN UINT8 ParamSel,
IN OUT UINT8 *Data
)
{
EFI_STATUS Status;
IPMI_GET_SOL_CONFIGURATION_PARAMETERS_REQUEST GetConfigurationParametersRequest;
IPMI_GET_SOL_CONFIGURATION_PARAMETERS_RESPONSE GetConfigurationParametersResponse;
UINT32 DataSize;
UINT8 RetryCount;
Status = EFI_SUCCESS;
for (RetryCount = 0; RetryCount < SOL_CMD_RETRY_COUNT; RetryCount++) {
ZeroMem (&GetConfigurationParametersRequest, sizeof (GetConfigurationParametersRequest));
GetConfigurationParametersRequest.ChannelNumber.Bits.ChannelNumber = Channel;
GetConfigurationParametersRequest.ParameterSelector = ParamSel;
ZeroMem (&GetConfigurationParametersResponse, sizeof (GetConfigurationParametersResponse));
DataSize = sizeof (GetConfigurationParametersResponse);
Status = IpmiGetSolConfigurationParameters (
&GetConfigurationParametersRequest,
&GetConfigurationParametersResponse,
&DataSize
);
if (Status == EFI_SUCCESS) {
break;
} else {
gBS->Stall (100000);
}
}
if (Status == EFI_SUCCESS) {
*Data = GetConfigurationParametersResponse.ParameterData[0];
}
return Status;
}
/**
Routine Description:
This routine sets the SOL payload configuration parameters for a specific channel.
Arguments:
@param[in] Channel LAN channel number.
@param[in] ParamSel Configuration parameter selection.
@param[in] Data Configuration parameter values.
Returns:
@retval EFI_SUCCESS SOL configuration parameters are sent to BMC.
@retval Others SOL configuration parameters could not be sent to BMC.
**/
EFI_STATUS
SetSolParams (
IN UINT8 Channel,
IN UINT8 ParamSel,
IN UINT8 Data
)
{
EFI_STATUS Status;
IPMI_SET_SOL_CONFIGURATION_PARAMETERS_REQUEST SetConfigurationParametersRequest;
UINT8 CompletionCode;
UINT8 RetryCount;
Status = EFI_SUCCESS;
for (RetryCount = 0; RetryCount < SOL_CMD_RETRY_COUNT; RetryCount++) {
ZeroMem (&SetConfigurationParametersRequest, sizeof (SetConfigurationParametersRequest));
SetConfigurationParametersRequest.ChannelNumber.Bits.ChannelNumber = Channel;
SetConfigurationParametersRequest.ParameterSelector = ParamSel;
SetConfigurationParametersRequest.ParameterData[0] = Data;
CompletionCode = 0;
Status = IpmiSetSolConfigurationParameters (
&SetConfigurationParametersRequest,
sizeof (SetConfigurationParametersRequest),
&CompletionCode
);
if (Status == EFI_SUCCESS) {
break;
} else {
gBS->Stall (100000);
}
}
return Status;
}
/**
Routine Description:
This is the standard EFI driver point. This function initializes
the private data required for creating SOL Status Driver.
@param[in] ImageHandle - Handle of this driver image
@param[in] SystemTable - Table containing standard EFI services
@retval EFI_SUCCESS - SOL status is initialized successfully.
@retval Otherwise - Other errors.
**/
EFI_STATUS
EFIAPI
SolStatusEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
UINT8 Channel;
BOOLEAN SolEnabled;
Status = EFI_SUCCESS;
SolEnabled = FALSE;
for (Channel = 1; Channel <= PcdGet8 (PcdMaxSolChannels); Channel++) {
Status = GetSolStatus (Channel, IPMI_SOL_CONFIGURATION_PARAMETER_SOL_ENABLE, &SolEnabled);
if (Status == EFI_SUCCESS) {
DEBUG ((DEBUG_ERROR, "SOL enabling status for channel %x is %x\n", Channel, SolEnabled));
} else {
DEBUG ((DEBUG_ERROR, "Failed to get channel %x SOL status from BMC!, status is %x\n", Channel, Status));
}
}
return Status;
}
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