mirror of https://github.com/acidanthera/audk.git
149 lines
3.7 KiB
C
149 lines
3.7 KiB
C
/** @file
|
|
|
|
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
|
|
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
|
|
|
|
|
|
Module Name:
|
|
|
|
SlotConfig.c
|
|
|
|
Abstract:
|
|
|
|
Sets platform/SKU specific expansion slot information.
|
|
|
|
|
|
|
|
--*/
|
|
#include "SlotConfig.h"
|
|
|
|
//
|
|
// Implementation
|
|
//
|
|
VOID
|
|
InitializeSlotInfo (
|
|
)
|
|
{
|
|
UINT16 BusSaveState;
|
|
UINT16 Vendor;
|
|
UINT8 CurrentBus;
|
|
UINTN i;
|
|
UINTN j;
|
|
EFI_HANDLE Handle;
|
|
EFI_STATUS Status;
|
|
BOOLEAN RunNext;
|
|
|
|
//
|
|
// Loop through the slot table and see if any slots have cards in them
|
|
//
|
|
for (i = 0; i < mSlotBridgeTableSize; i++) {
|
|
//
|
|
// Initialize variable
|
|
//
|
|
RunNext = FALSE;
|
|
|
|
//
|
|
// Hide mini PCIe slots per SKU
|
|
//
|
|
for (j = 0; j < mSlotInformation.NumberOfEntries; j++) {
|
|
if (mSlotInformation.SlotEntries[j].SmbiosSlotId == mSlotBridgeTable[i].SmbiosSlotId) {
|
|
if ((mSlotInformation.SlotEntries[j].SmbiosSlotId == 0x02) &&
|
|
(mBoardFeatures & B_BOARD_FEATURES_NO_MINIPCIE)
|
|
) {
|
|
mSlotInformation.SlotEntries[j].Disabled = TRUE;
|
|
RunNext = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (RunNext) {
|
|
//
|
|
// Skip slot device detection since the slot is disabled.
|
|
//
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// Check to see if the bridge has a bus number and assign one if not
|
|
//
|
|
BusSaveState = MmPci16 (
|
|
0,
|
|
mSlotBridgeTable[i].Bus,
|
|
mSlotBridgeTable[i].Dev,
|
|
mSlotBridgeTable[i].Function,
|
|
PCI_BRIDGE_SECONDARY_BUS_REGISTER_OFFSET
|
|
);
|
|
if (BusSaveState == 0) {
|
|
//
|
|
// Assign temp bus number
|
|
//
|
|
MmPci16 (
|
|
0,
|
|
mSlotBridgeTable[i].Bus,
|
|
mSlotBridgeTable[i].Dev,
|
|
mSlotBridgeTable[i].Function,
|
|
PCI_BRIDGE_SECONDARY_BUS_REGISTER_OFFSET
|
|
) = DEF_BUS_CONFIG;
|
|
CurrentBus = DEF_BUS;
|
|
} else if (BusSaveState == 0xFFFF) {
|
|
//
|
|
// Bridge is disabled so continue with next entry in the table
|
|
//
|
|
continue;
|
|
} else {
|
|
//
|
|
// Use existing bus number
|
|
//
|
|
CurrentBus = (UINT8) BusSaveState & 0xFF;
|
|
}
|
|
|
|
//
|
|
// Check to see if a device is behind the bridge
|
|
//
|
|
Vendor = MmPci16 (
|
|
0,
|
|
CurrentBus,
|
|
mSlotBridgeTable[i].TargetDevice,
|
|
0,
|
|
0
|
|
);
|
|
if (Vendor != 0xFFFF) {
|
|
//
|
|
// Device found so make sure the slot is marked that way
|
|
//
|
|
for (j = 0; j < mSlotInformation.NumberOfEntries; j++) {
|
|
if (mSlotInformation.SlotEntries[j].SmbiosSlotId == mSlotBridgeTable[i].SmbiosSlotId) {
|
|
mSlotInformation.SlotEntries[j].InUse = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Restore previous bus information
|
|
//
|
|
if (BusSaveState == 0) {
|
|
MmPci16 (
|
|
0,
|
|
mSlotBridgeTable[i].Bus,
|
|
mSlotBridgeTable[i].Dev,
|
|
mSlotBridgeTable[i].Function,
|
|
PCI_BRIDGE_SECONDARY_BUS_REGISTER_OFFSET
|
|
) = 0;
|
|
}
|
|
}
|
|
|
|
Handle = NULL;
|
|
Status = gBS->InstallProtocolInterface (
|
|
&Handle,
|
|
&gEfiSmbiosSlotPopulationGuid,
|
|
EFI_NATIVE_INTERFACE,
|
|
&mSlotInformation
|
|
);
|
|
ASSERT_EFI_ERROR(Status);
|
|
|
|
}
|