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/** @file
Implementation file for Heci Message functionality.
Copyright (c) 2006 - 2016, 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 <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/HeciMsgLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PciLib.h>
#include <Library/PerformanceLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/TimerLib.h>
#include <Ppi/HeciPpi.h>
#include <CoreBiosMsg.h>
#include <HeciRegs.h>
#include <SeCAccess.h>
#include <IndustryStandard/Pci22.h>
/**
Calculate if the circular buffer has overflowed.
@param[in] ReadPointer Location of the read pointer.
@param[in] WritePointer Location of the write pointer.
@return Number of filled slots.
**/
UINT8
FilledSlots (
IN UINT32 ReadPointer,
IN UINT32 WritePointer
)
{
UINT8 FilledSlots;
FilledSlots = (((INT8) WritePointer) - ((INT8) ReadPointer));
return FilledSlots;
}
/**
Calculate if the circular buffer has overflowed
@param[in] ReadPointer Value read from host/me read pointer.
@param[in] WritePointer Value read from host/me write pointer.
@param[in] BufferDepth Value read from buffer depth register.
@retval EFI_DEVICE_ERROR The circular buffer has overflowed.
@retval EFI_SUCCESS The circular buffer does not overflowed.
**/
EFI_STATUS
OverflowCB (
IN UINT32 ReadPointer,
IN UINT32 WritePointer,
IN UINT32 BufferDepth
)
{
UINT8 FilledSlots;
FilledSlots = (((INT8) WritePointer) - ((INT8) ReadPointer));
//
// test for overflow
//
if (FilledSlots > ((UINT8) BufferDepth)) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
Send Get Firmware SKU Request to SEC.
@param[in, out] FwCapsSku SEC Firmware Capability SKU.
@retval EFI_UNSUPPORTED Current SEC mode doesn't support this function.
@retval EFI_SUCCESS Command succeeded.
@retval EFI_DEVICE_ERROR HECI Device error, command aborts abnormally.
@retval EFI_TIMEOUT HECI does not return the buffer before timeout.
@retval EFI_BUFFER_TOO_SMALL Message Buffer is too small for the Acknowledge.
**/
EFI_STATUS
PeiHeciGetFwCapsSkuMsg (
IN OUT SECFWCAPS_SKU *FwCapsSku
)
{
EFI_STATUS Status;
GEN_GET_FW_CAPS_SKU_BUFFER MsgGenGetFwCapsSku;
UINT32 Length;
UINT32 RecvLength;
UINT32 SeCMode;
Status = HeciGetSeCMode (HECI1_DEVICE, &SeCMode);
if (EFI_ERROR (Status) || (SeCMode != SEC_MODE_NORMAL)) {
return EFI_UNSUPPORTED;
}
MsgGenGetFwCapsSku.Request.MKHIHeader.Data = 0;
MsgGenGetFwCapsSku.Request.MKHIHeader.Fields.GroupId = MKHI_FWCAPS_GROUP_ID;
MsgGenGetFwCapsSku.Request.MKHIHeader.Fields.Command = FWCAPS_GET_RULE_CMD;
MsgGenGetFwCapsSku.Request.MKHIHeader.Fields.IsResponse = 0;
MsgGenGetFwCapsSku.Request.Data.RuleId = 0;
Length = sizeof (GEN_GET_FW_CAPSKU);
RecvLength = sizeof (GEN_GET_FW_CAPS_SKU_ACK);
//
// Send Get FW SKU Request to SEC
//
Status = HeciSendwACK (
HECI1_DEVICE,
(UINT32 *) &MsgGenGetFwCapsSku,
Length,
&RecvLength,
BIOS_FIXED_HOST_ADDR,
HECI_CORE_MESSAGE_ADDR
);
if (!EFI_ERROR (Status) && ((MsgGenGetFwCapsSku.Response.MKHIHeader.Fields.Command) == FWCAPS_GET_RULE_CMD) &&
((MsgGenGetFwCapsSku.Response.MKHIHeader.Fields.IsResponse) == 1) &&
(MsgGenGetFwCapsSku.Response.MKHIHeader.Fields.Result == 0)) {
*FwCapsSku = MsgGenGetFwCapsSku.Response.Data.FWCapSku;
}
return Status;
}
/**
This message is sent by the BIOS or IntelR MEBX. One of usages is to utilize
this command to determine if the platform runs in Consumer or Corporate SKU
size firmware.
@param[out] RuleData PlatformBrand,
IntelMeFwImageType,
SuperSku,
PlatformTargetUsageType
@retval EFI_UNSUPPORTED Current SEC mode doesn't support this function.
@retval EFI_SUCCESS Command succeeded.
@retval EFI_DEVICE_ERROR HECI Device error, command aborts abnormally.
@retval EFI_TIMEOUT HECI does not return the buffer before timeout.
@retval EFI_BUFFER_TOO_SMALL Message Buffer is too small for the Acknowledge.
**/
EFI_STATUS
PeiHeciGetPlatformTypeMsg (
OUT PLATFORM_TYPE_RULE_DATA *RuleData
)
{
EFI_STATUS Status;
UINT32 Length;
UINT32 RecvLength;
GEN_GET_PLATFORM_TYPE_BUFFER MsgGenGetPlatformType;
UINT32 SeCMode;
Status = HeciGetSeCMode (HECI1_DEVICE, &SeCMode);
if (EFI_ERROR(Status) || (MeMode != SEC_MODE_NORMAL)) {
return EFI_UNSUPPORTED;
}
MsgGenGetPlatformType.Request.MKHIHeader.Data = 0;
MsgGenGetPlatformType.Request.MKHIHeader.Fields.GroupId = MKHI_FWCAPS_GROUP_ID;
MsgGenGetPlatformType.Request.MKHIHeader.Fields.Command = FWCAPS_GET_RULE_CMD;
MsgGenGetPlatformType.Request.MKHIHeader.Fields.IsResponse = 0;
MsgGenGetPlatformType.Request.Data.RuleId = 0x1D;
Length = sizeof (GEN_GET_PLATFORM_TYPE);
RecvLength = sizeof (GEN_GET_PLATFORM_TYPE_ACK);
//
// Send Get Platform Type Request to SEC
//
Status = HeciSendwACK (
HECI1_DEVICE,
(UINT32 *) &MsgGenGetPlatformType,
Length,
&RecvLength,
BIOS_FIXED_HOST_ADDR,
HECI_CORE_MESSAGE_ADDR
);
if (!EFI_ERROR (Status)) {
*RuleData = MsgGenGetPlatformType.Response.Data.RuleData;
}
return Status;
}
/**
This message is sent by the BIOS or IntelR MEBX. To Get Firmware Version Request to SEC.
@param[in,out] MsgGenGetFwVersionAck Return themessage of FW version.
@retval EFI_UNSUPPORTED Current SEC mode doesn't support this function.
@retval EFI_SUCCESS Command succeeded.
@retval EFI_DEVICE_ERROR HECI Device error, command aborts abnormally.
@retval EFI_TIMEOUT HECI does not return the buffer before timeout.
@retval EFI_BUFFER_TOO_SMALL Message Buffer is too smallfor the Acknowledge.
**/
EFI_STATUS
PeiHeciGetFwVersionMsg (
IN OUT GEN_GET_FW_VER_ACK *MsgGenGetFwVersionAck
)
{
EFI_STATUS Status;
UINT32 Length;
UINT32 RecvLength;
GEN_GET_FW_VER_ACK_BUFFER *MsgGenGetFwVersion;
UINT32 SeCMode;
Status = HeciGetSeCMode (HECI1_DEVICE, &SeCMode);
if (EFI_ERROR(Status) || (MeMode != SEC_MODE_NORMAL)) {
return EFI_UNSUPPORTED;
}
MsgGenGetFwVersion.Request.MKHIHeader.Data = 0;
MsgGenGetFwVersion.Request.MKHIHeader.Fields.GroupId = MKHI_GEN_GROUP_ID;
MsgGenGetFwVersion.Request.MKHIHeader.Fields.Command = GEN_GET_FW_VERSION_CMD;
MsgGenGetFwVersion.Request.MKHIHeader.Fields.IsResponse = 0;
Length = sizeof (GEN_GET_FW_VER);
RecvLength = sizeof (GEN_GET_FW_VER_ACK);
//
// Send Get Firmware Version Request to SEC
//
Status = HeciSendwACK (
HECI1_DEVICE,
(UINT32 *) &MsgGenGetFwVersion,
Length,
&RecvLength,
BIOS_FIXED_HOST_ADDR,
HECI_CORE_MESSAGE_ADDR
);
if (!EFI_ERROR (Status)) {
memcpy (MsgGenGetFwVersionAck, &(MsgGenGetFwVersion.Response), RecvLength);
}
return Status;
}
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