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CorebootPayloadPkg: Use generic PciBus/PciHostBridge driver 

Current CorebootPayloadPkg uses PciBusNoEnumerationDxe and
PciRootBridgenoEnumerationDxe copied from the DuetPkg. Now it will
switch to use the standard PciBusDxe and PciHostBridgeDxe from
MdeModulePkg. As a result, a coreboot specific PciHostBridgeLib
is added to collect pre-allocated PCI resources.

Cc: Prince Agyeman <prince.agyeman@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Maurice Ma <maurice.ma@intel.com>
Reviewed-by: Prince Agyeman <prince.agyeman@intel.com>
This commit is contained in:
Maurice Ma 2016-05-16 15:02:44 -07:00
parent 60c809f362
commit 69787a9d31
7 changed files with 976 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
CorebootPayloadPkg/CorebootPayloadPkg.fdf
View File

@ -111,8 +111,8 @@ INF MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.inf
#
# PCI Support
#
INF CorebootModulePkg/PciRootBridgeNoEnumerationDxe/PciRootBridgeNoEnumeration.inf
INF CorebootModulePkg/PciBusNoEnumerationDxe/PciBusNoEnumeration.inf
INF MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
INF MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
#
# ISA Support

20
CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc
View File

@ -38,6 +38,11 @@
#
DEFINE MAX_LOGICAL_PROCESSORS = 64
#
# PCI options
#
DEFINE PCIE_BASE = 0xE0000000
#
# Serial port set up
#
@ -115,8 +120,9 @@
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
CpuLib|MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
PciLib|MdePkg/Library/BasePciLibCf8/BasePciLibCf8.inf
PciCf8Lib|MdePkg/Library/BasePciCf8Lib/BasePciCf8Lib.inf
PciLib|MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf
PciExpressLib|MdePkg/Library/BasePciExpressLib/BasePciExpressLib.inf
PciSegmentLib|MdePkg/Library/BasePciSegmentLibPci/BasePciSegmentLibPci.inf
PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
CacheMaintenanceLib|MdePkg/Library/BaseCacheMaintenanceLib/BaseCacheMaintenanceLib.inf
@ -251,6 +257,8 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdVpdBaseAddress|0x0
gEfiMdeModulePkgTokenSpaceGuid.PcdBootManagerMenuFile|{ 0x21, 0xaa, 0x2c, 0x46, 0x14, 0x76, 0x03, 0x45, 0x83, 0x6e, 0x8a, 0xb6, 0xf4, 0x66, 0x23, 0x31 }
gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|$(PCIE_BASE)
!if $(SOURCE_DEBUG_ENABLE)
gEfiSourceLevelDebugPkgTokenSpaceGuid.PcdDebugLoadImageMethod|0x2
!endif
@ -282,6 +290,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialFifoControl|$(SERIAL_FIFO_CONTROL)
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialExtendedTxFifoSize|$(SERIAL_EXTENDED_TX_FIFO_SIZE)
gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|TRUE
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate|$(UART_DEFAULT_BAUD_RATE)
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits|$(UART_DEFAULT_DATA_BITS)
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity|$(UART_DEFAULT_PARITY)
@ -418,8 +427,11 @@
#
# PCI Support
#
CorebootModulePkg/PciRootBridgeNoEnumerationDxe/PciRootBridgeNoEnumeration.inf
CorebootModulePkg/PciBusNoEnumerationDxe/PciBusNoEnumeration.inf
MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf {
<LibraryClasses>
PciHostBridgeLib|CorebootPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
}
#
# SCSI/ATA/IDE/DISK Support

20
CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc
View File

@ -38,6 +38,11 @@
#
DEFINE MAX_LOGICAL_PROCESSORS = 64
#
# PCI options
#
DEFINE PCIE_BASE = 0xE0000000
#
# Serial port set up
#
@ -117,8 +122,9 @@
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
CpuLib|MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
PciLib|MdePkg/Library/BasePciLibCf8/BasePciLibCf8.inf
PciCf8Lib|MdePkg/Library/BasePciCf8Lib/BasePciCf8Lib.inf
PciLib|MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf
PciExpressLib|MdePkg/Library/BasePciExpressLib/BasePciExpressLib.inf
PciSegmentLib|MdePkg/Library/BasePciSegmentLibPci/BasePciSegmentLibPci.inf
PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
CacheMaintenanceLib|MdePkg/Library/BaseCacheMaintenanceLib/BaseCacheMaintenanceLib.inf
@ -254,6 +260,8 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable|TRUE
gEfiMdeModulePkgTokenSpaceGuid.PcdBootManagerMenuFile|{ 0x21, 0xaa, 0x2c, 0x46, 0x14, 0x76, 0x03, 0x45, 0x83, 0x6e, 0x8a, 0xb6, 0xf4, 0x66, 0x23, 0x31 }
gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|$(PCIE_BASE)
!if $(SOURCE_DEBUG_ENABLE)
gEfiSourceLevelDebugPkgTokenSpaceGuid.PcdDebugLoadImageMethod|0x2
!endif
@ -285,6 +293,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialFifoControl|$(SERIAL_FIFO_CONTROL)
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialExtendedTxFifoSize|$(SERIAL_EXTENDED_TX_FIFO_SIZE)
gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|TRUE
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate|$(UART_DEFAULT_BAUD_RATE)
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits|$(UART_DEFAULT_DATA_BITS)
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity|$(UART_DEFAULT_PARITY)
@ -421,8 +430,11 @@
#
# PCI Support
#
CorebootModulePkg/PciRootBridgeNoEnumerationDxe/PciRootBridgeNoEnumeration.inf
CorebootModulePkg/PciBusNoEnumerationDxe/PciBusNoEnumeration.inf
MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf {
<LibraryClasses>
PciHostBridgeLib|CorebootPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
}
#
# SCSI/ATA/IDE/DISK Support

86
CorebootPayloadPkg/Library/PciHostBridgeLib/PciHostBridge.h Normal file
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@ -0,0 +1,86 @@
/** @file
Header file of PciHostBridgeLib.
Copyright (C) 2016, Red Hat, Inc.
Copyright (c) 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.
**/
#ifndef _PCI_HOST_BRIDGE_H
#define _PCI_HOST_BRIDGE_H
typedef struct {
ACPI_HID_DEVICE_PATH AcpiDevicePath;
EFI_DEVICE_PATH_PROTOCOL EndDevicePath;
} CB_PCI_ROOT_BRIDGE_DEVICE_PATH;
PCI_ROOT_BRIDGE *
ScanForRootBridges (
UINTN *NumberOfRootBridges
);
/**
Initialize a PCI_ROOT_BRIDGE structure.
@param[in] Supports Supported attributes.
@param[in] Attributes Initial attributes.
@param[in] AllocAttributes Allocation attributes.
@param[in] RootBusNumber The bus number to store in RootBus.
@param[in] MaxSubBusNumber The inclusive maximum bus number that can be
assigned to any subordinate bus found behind any
PCI bridge hanging off this root bus.
The caller is repsonsible for ensuring that
RootBusNumber <= MaxSubBusNumber. If
RootBusNumber equals MaxSubBusNumber, then the
root bus has no room for subordinate buses.
@param[in] Io IO aperture.
@param[in] Mem MMIO aperture.
@param[in] MemAbove4G MMIO aperture above 4G.
@param[in] PMem Prefetchable MMIO aperture.
@param[in] PMemAbove4G Prefetchable MMIO aperture above 4G.
@param[out] RootBus The PCI_ROOT_BRIDGE structure (allocated by the
caller) that should be filled in by this
function.
@retval EFI_SUCCESS Initialization successful. A device path
consisting of an ACPI device path node, with
UID = RootBusNumber, has been allocated and
linked into RootBus.
@retval EFI_OUT_OF_RESOURCES Memory allocation failed.
**/
EFI_STATUS
InitRootBridge (
IN UINT64 Supports,
IN UINT64 Attributes,
IN UINT64 AllocAttributes,
IN UINT8 RootBusNumber,
IN UINT8 MaxSubBusNumber,
IN PCI_ROOT_BRIDGE_APERTURE *Io,
IN PCI_ROOT_BRIDGE_APERTURE *Mem,
IN PCI_ROOT_BRIDGE_APERTURE *MemAbove4G,
IN PCI_ROOT_BRIDGE_APERTURE *PMem,
IN PCI_ROOT_BRIDGE_APERTURE *PMemAbove4G,
OUT PCI_ROOT_BRIDGE *RootBus
);
#endif

228
CorebootPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c Normal file
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@ -0,0 +1,228 @@
/** @file
Library instance of PciHostBridgeLib library class for coreboot.
Copyright (C) 2016, Red Hat, Inc.
Copyright (c) 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 <PiDxe.h>
#include <IndustryStandard/Pci.h>
#include <Protocol/PciHostBridgeResourceAllocation.h>
#include <Protocol/PciRootBridgeIo.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PciHostBridgeLib.h>
#include <Library/PciLib.h>
#include "PciHostBridge.h"
STATIC
CONST
CB_PCI_ROOT_BRIDGE_DEVICE_PATH mRootBridgeDevicePathTemplate = {
{
{
ACPI_DEVICE_PATH,
ACPI_DP,
{
(UINT8) (sizeof(ACPI_HID_DEVICE_PATH)),
(UINT8) ((sizeof(ACPI_HID_DEVICE_PATH)) >> 8)
}
},
EISA_PNP_ID(0x0A03), // HID
0 // UID
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
END_DEVICE_PATH_LENGTH,
0
}
}
};
/**
Initialize a PCI_ROOT_BRIDGE structure.
@param[in] Supports Supported attributes.
@param[in] Attributes Initial attributes.
@param[in] AllocAttributes Allocation attributes.
@param[in] RootBusNumber The bus number to store in RootBus.
@param[in] MaxSubBusNumber The inclusive maximum bus number that can be
assigned to any subordinate bus found behind any
PCI bridge hanging off this root bus.
The caller is repsonsible for ensuring that
RootBusNumber <= MaxSubBusNumber. If
RootBusNumber equals MaxSubBusNumber, then the
root bus has no room for subordinate buses.
@param[in] Io IO aperture.
@param[in] Mem MMIO aperture.
@param[in] MemAbove4G MMIO aperture above 4G.
@param[in] PMem Prefetchable MMIO aperture.
@param[in] PMemAbove4G Prefetchable MMIO aperture above 4G.
@param[out] RootBus The PCI_ROOT_BRIDGE structure (allocated by the
caller) that should be filled in by this
function.
@retval EFI_SUCCESS Initialization successful. A device path
consisting of an ACPI device path node, with
UID = RootBusNumber, has been allocated and
linked into RootBus.
@retval EFI_OUT_OF_RESOURCES Memory allocation failed.
**/
EFI_STATUS
InitRootBridge (
IN UINT64 Supports,
IN UINT64 Attributes,
IN UINT64 AllocAttributes,
IN UINT8 RootBusNumber,
IN UINT8 MaxSubBusNumber,
IN PCI_ROOT_BRIDGE_APERTURE *Io,
IN PCI_ROOT_BRIDGE_APERTURE *Mem,
IN PCI_ROOT_BRIDGE_APERTURE *MemAbove4G,
IN PCI_ROOT_BRIDGE_APERTURE *PMem,
IN PCI_ROOT_BRIDGE_APERTURE *PMemAbove4G,
OUT PCI_ROOT_BRIDGE *RootBus
)
{
CB_PCI_ROOT_BRIDGE_DEVICE_PATH *DevicePath;
//
// Be safe if other fields are added to PCI_ROOT_BRIDGE later.
//
ZeroMem (RootBus, sizeof *RootBus);
RootBus->Segment = 0;
RootBus->Supports = Supports;
RootBus->Attributes = Attributes;
RootBus->DmaAbove4G = FALSE;
RootBus->AllocationAttributes = AllocAttributes;
RootBus->Bus.Base = RootBusNumber;
RootBus->Bus.Limit = MaxSubBusNumber;
CopyMem (&RootBus->Io, Io, sizeof (*Io));
CopyMem (&RootBus->Mem, Mem, sizeof (*Mem));
CopyMem (&RootBus->MemAbove4G, MemAbove4G, sizeof (*MemAbove4G));
CopyMem (&RootBus->PMem, PMem, sizeof (*PMem));
CopyMem (&RootBus->PMemAbove4G, PMemAbove4G, sizeof (*PMemAbove4G));
RootBus->NoExtendedConfigSpace = FALSE;
DevicePath = AllocateCopyPool (sizeof (mRootBridgeDevicePathTemplate),
&mRootBridgeDevicePathTemplate);
if (DevicePath == NULL) {
DEBUG ((EFI_D_ERROR, "%a: %r\n", __FUNCTION__, EFI_OUT_OF_RESOURCES));
return EFI_OUT_OF_RESOURCES;
}
DevicePath->AcpiDevicePath.UID = RootBusNumber;
RootBus->DevicePath = (EFI_DEVICE_PATH_PROTOCOL *)DevicePath;
DEBUG ((EFI_D_INFO,
"%a: populated root bus %d, with room for %d subordinate bus(es)\n",
__FUNCTION__, RootBusNumber, MaxSubBusNumber - RootBusNumber));
return EFI_SUCCESS;
}
/**
Return all the root bridge instances in an array.
@param Count Return the count of root bridge instances.
@return All the root bridge instances in an array.
The array should be passed into PciHostBridgeFreeRootBridges()
when it's not used.
**/
PCI_ROOT_BRIDGE *
EFIAPI
PciHostBridgeGetRootBridges (
UINTN *Count
)
{
return ScanForRootBridges (Count);
}
/**
Free the root bridge instances array returned from
PciHostBridgeGetRootBridges().
@param The root bridge instances array.
@param The count of the array.
**/
VOID
EFIAPI
PciHostBridgeFreeRootBridges (
PCI_ROOT_BRIDGE *Bridges,
UINTN Count
)
{
if (Bridges == NULL && Count == 0) {
return;
}
ASSERT (Bridges != NULL && Count > 0);
do {
--Count;
FreePool (Bridges[Count].DevicePath);
} while (Count > 0);
FreePool (Bridges);
}
/**
Inform the platform that the resource conflict happens.
@param HostBridgeHandle Handle of the Host Bridge.
@param Configuration Pointer to PCI I/O and PCI memory resource
descriptors. The Configuration contains the resources
for all the root bridges. The resource for each root
bridge is terminated with END descriptor and an
additional END is appended indicating the end of the
entire resources. The resource descriptor field
values follow the description in
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
.SubmitResources().
**/
VOID
EFIAPI
PciHostBridgeResourceConflict (
EFI_HANDLE HostBridgeHandle,
VOID *Configuration
)
{
//
// coreboot UEFI Payload does not do PCI enumeration and should not call this
// library interface.
//
ASSERT (FALSE);
}

47
CorebootPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf Normal file
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@ -0,0 +1,47 @@
## @file
# Library instance of PciHostBridgeLib library class for coreboot.
#
# Copyright (C) 2016, Red Hat, Inc.
# Copyright (c) 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.
#
#
##
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = PciHostBridgeLib
FILE_GUID = 62EE5269-CFFD-43a3-BE3F-622FC79F467E
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = PciHostBridgeLib
#
# The following information is for reference only and not required by the build
# tools.
#
# VALID_ARCHITECTURES = IA32 X64 IPF EBC
#
[Sources]
PciHostBridge.h
PciHostBridgeLib.c
PciHostBridgeSupport.c
[Packages]
MdeModulePkg/MdeModulePkg.dec
MdePkg/MdePkg.dec
[LibraryClasses]
BaseMemoryLib
DebugLib
DevicePathLib
MemoryAllocationLib
PciLib

581
CorebootPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeSupport.c Normal file
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@ -0,0 +1,581 @@
/** @file
Scan the entire PCI bus for root bridges to support coreboot UEFI payload.
Copyright (c) 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 <PiDxe.h>
#include <IndustryStandard/Pci.h>
#include <Protocol/PciHostBridgeResourceAllocation.h>
#include <Protocol/PciRootBridgeIo.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PciHostBridgeLib.h>
#include <Library/PciLib.h>
#include "PciHostBridge.h"
/**
Adjust the collected PCI resource.
@param[in] Io IO aperture.
@param[in] Mem MMIO aperture.
@param[in] MemAbove4G MMIO aperture above 4G.
@param[in] PMem Prefetchable MMIO aperture.
@param[in] PMemAbove4G Prefetchable MMIO aperture above 4G.
**/
VOID
AdjustRootBridgeResource (
IN PCI_ROOT_BRIDGE_APERTURE *Io,
IN PCI_ROOT_BRIDGE_APERTURE *Mem,
IN PCI_ROOT_BRIDGE_APERTURE *MemAbove4G,
IN PCI_ROOT_BRIDGE_APERTURE *PMem,
IN PCI_ROOT_BRIDGE_APERTURE *PMemAbove4G
)
{
UINT64 Mask;
//
// For now try to downgrade everything into MEM32 since
// - coreboot does not assign resource above 4GB
// - coreboot might allocate interleaved MEM32 and PMEM32 resource
// in some cases
//
if (PMem->Base < Mem->Base) {
Mem->Base = PMem->Base;
}
if (PMem->Limit > Mem->Limit) {
Mem->Limit = PMem->Limit;
}
PMem->Base = MAX_UINT64;
PMem->Limit = 0;
if (MemAbove4G->Base < 0x100000000ULL) {
if (MemAbove4G->Base < Mem->Base) {
Mem->Base = MemAbove4G->Base;
}
if (MemAbove4G->Limit > Mem->Limit) {
Mem->Limit = MemAbove4G->Limit;
}
MemAbove4G->Base = MAX_UINT64;
MemAbove4G->Limit = 0;
}
if (PMemAbove4G->Base < 0x100000000ULL) {
if (PMemAbove4G->Base < Mem->Base) {
Mem->Base = PMemAbove4G->Base;
}
if (PMemAbove4G->Limit > Mem->Limit) {
Mem->Limit = PMemAbove4G->Limit;
}
PMemAbove4G->Base = MAX_UINT64;
PMemAbove4G->Limit = 0;
}
//
// Align IO resource at 4K boundary
//
Mask = 0xFFFULL;
Io->Limit = (Io->Limit + Mask) & ~Mask;
if (Io->Base != MAX_UINT64) {
Io->Base &= ~Mask;
}
//
// Align MEM resource at 1MB boundary
//
Mask = 0xFFFFFULL;
Mem->Limit = (Mem->Limit + Mask) & ~Mask;
if (Mem->Base != MAX_UINT64) {
Mem->Base &= ~Mask;
}
}
/**
Probe a bar is existed or not.
@param[in] Address PCI address for the BAR.
@param[out] OriginalValue The original bar value returned.
@param[out] Value The probed bar value returned.
**/
STATIC
VOID
PcatPciRootBridgeBarExisted (
IN UINT64 Address,
OUT UINT32 *OriginalValue,
OUT UINT32 *Value
)
{
UINTN PciAddress;
PciAddress = (UINTN)Address;
//
// Preserve the original value
//
*OriginalValue = PciRead32 (PciAddress);
//
// Disable timer interrupt while the BAR is probed
//
DisableInterrupts ();
PciWrite32 (PciAddress, 0xFFFFFFFF);
*Value = PciRead32 (PciAddress);
PciWrite32 (PciAddress, *OriginalValue);
//
// Enable interrupt
//
EnableInterrupts ();
}
/**
Parse PCI bar and collect the assigned PCI resouce information.
@param[in] Command Supported attributes.
@param[in] Bus PCI bus number.
@param[in] Device PCI device number.
@param[in] Function PCI function number.
@param[in] BarOffsetBase PCI bar start offset.
@param[in] BarOffsetEnd PCI bar end offset.
@param[in] Io IO aperture.
@param[in] Mem MMIO aperture.
@param[in] MemAbove4G MMIO aperture above 4G.
@param[in] PMem Prefetchable MMIO aperture.
@param[in] PMemAbove4G Prefetchable MMIO aperture above 4G.
**/
STATIC
VOID
PcatPciRootBridgeParseBars (
IN UINT16 Command,
IN UINTN Bus,
IN UINTN Device,
IN UINTN Function,
IN UINTN BarOffsetBase,
IN UINTN BarOffsetEnd,
IN PCI_ROOT_BRIDGE_APERTURE *Io,
IN PCI_ROOT_BRIDGE_APERTURE *Mem,
IN PCI_ROOT_BRIDGE_APERTURE *MemAbove4G,
IN PCI_ROOT_BRIDGE_APERTURE *PMem,
IN PCI_ROOT_BRIDGE_APERTURE *PMemAbove4G
)
{
UINT32 OriginalValue;
UINT32 Value;
UINT32 OriginalUpperValue;
UINT32 UpperValue;
UINT64 Mask;
UINTN Offset;
UINT64 Base;
UINT64 Length;
UINT64 Limit;
PCI_ROOT_BRIDGE_APERTURE *MemAperture;
for (Offset = BarOffsetBase; Offset < BarOffsetEnd; Offset += sizeof (UINT32)) {
PcatPciRootBridgeBarExisted (
PCI_LIB_ADDRESS (Bus, Device, Function, Offset),
&OriginalValue, &Value
);
if (Value == 0) {
continue;
}
if ((Value & BIT0) == BIT0) {
//
// IO Bar
//
if (Command & EFI_PCI_COMMAND_IO_SPACE) {
Mask = 0xfffffffc;
Base = OriginalValue & Mask;
Length = ((~(Value & Mask)) & Mask) + 0x04;
if (!(Value & 0xFFFF0000)) {
Length &= 0x0000FFFF;
}
Limit = Base + Length - 1;
if ((Base > 0) && (Base < Limit)) {
if (Io->Base > Base) {
Io->Base = Base;
}
if (Io->Limit < Limit) {
Io->Limit = Limit;
}
}
}
} else {
//
// Mem Bar
//
if (Command & EFI_PCI_COMMAND_MEMORY_SPACE) {
Mask = 0xfffffff0;
Base = OriginalValue & Mask;
Length = Value & Mask;
if ((Value & (BIT1 | BIT2)) == 0) {
//
// 32bit
//
Length = ((~Length) + 1) & 0xffffffff;
if ((Value & BIT3) == BIT3) {
MemAperture = PMem;
} else {
MemAperture = Mem;
}
} else {
//
// 64bit
//
Offset += 4;
PcatPciRootBridgeBarExisted (
PCI_LIB_ADDRESS (Bus, Device, Function, Offset),
&OriginalUpperValue,
&UpperValue
);
Base = Base | LShiftU64 ((UINT64) OriginalUpperValue, 32);
Length = Length | LShiftU64 ((UINT64) UpperValue, 32);
Length = (~Length) + 1;
if ((Value & BIT3) == BIT3) {
MemAperture = PMemAbove4G;
} else {
MemAperture = MemAbove4G;
}
}
Limit = Base + Length - 1;
if ((Base > 0) && (Base < Limit)) {
if (MemAperture->Base > Base) {
MemAperture->Base = Base;
}
if (MemAperture->Limit < Limit) {
MemAperture->Limit = Limit;
}
}
}
}
}
}
/**
Scan for all root bridges in platform.
@param[out] NumberOfRootBridges Number of root bridges detected
@retval Pointer to the allocated PCI_ROOT_BRIDGE structure array.
**/
PCI_ROOT_BRIDGE *
ScanForRootBridges (
OUT UINTN *NumberOfRootBridges
)
{
UINTN PrimaryBus;
UINTN SubBus;
UINT8 Device;
UINT8 Function;
UINTN NumberOfDevices;
UINTN Address;
PCI_TYPE01 Pci;
UINT64 Attributes;
UINT64 Base;
UINT64 Limit;
UINT64 Value;
PCI_ROOT_BRIDGE_APERTURE Io, Mem, MemAbove4G, PMem, PMemAbove4G, *MemAperture;
PCI_ROOT_BRIDGE *RootBridges;
UINTN BarOffsetEnd;
*NumberOfRootBridges = 0;
RootBridges = NULL;
//
// After scanning all the PCI devices on the PCI root bridge's primary bus,
// update the Primary Bus Number for the next PCI root bridge to be this PCI
// root bridge's subordinate bus number + 1.
//
for (PrimaryBus = 0; PrimaryBus <= PCI_MAX_BUS; PrimaryBus = SubBus + 1) {
SubBus = PrimaryBus;
Attributes = 0;
Io.Base = Mem.Base = MemAbove4G.Base = PMem.Base = PMemAbove4G.Base = MAX_UINT64;
Io.Limit = Mem.Limit = MemAbove4G.Limit = PMem.Limit = PMemAbove4G.Limit = 0;
//
// Scan all the PCI devices on the primary bus of the PCI root bridge
//
for (Device = 0, NumberOfDevices = 0; Device <= PCI_MAX_DEVICE; Device++) {
for (Function = 0; Function <= PCI_MAX_FUNC; Function++) {
//
// Compute the PCI configuration address of the PCI device to probe
//
Address = PCI_LIB_ADDRESS (PrimaryBus, Device, Function, 0);
//
// Read the Vendor ID from the PCI Configuration Header
//
if (PciRead16 (Address) == MAX_UINT16) {
if (Function == 0) {
//
// If the PCI Configuration Read fails, or a PCI device does not
// exist, then skip this entire PCI device
//
break;
} else {
//
// If PCI function != 0, VendorId == 0xFFFF, we continue to search
// PCI function.
//
continue;
}
}
//
// Read the entire PCI Configuration Header
//
PciReadBuffer (Address, sizeof (Pci), &Pci);
//
// Increment the number of PCI device found on the primary bus of the
// PCI root bridge
//
NumberOfDevices++;
//
// Look for devices with the VGA Palette Snoop enabled in the COMMAND
// register of the PCI Config Header
//
if ((Pci.Hdr.Command & EFI_PCI_COMMAND_VGA_PALETTE_SNOOP) != 0) {
Attributes |= EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO;
Attributes |= EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO_16;
}
BarOffsetEnd = 0;
//
// PCI-PCI Bridge
//
if (IS_PCI_BRIDGE (&Pci)) {
//
// Get the Bus range that the PPB is decoding
//
if (Pci.Bridge.SubordinateBus > SubBus) {
//
// If the suborinate bus number of the PCI-PCI bridge is greater
// than the PCI root bridge's current subordinate bus number,
// then update the PCI root bridge's subordinate bus number
//
SubBus = Pci.Bridge.SubordinateBus;
}
//
// Get the I/O range that the PPB is decoding
//
Value = Pci.Bridge.IoBase & 0x0f;
Base = ((UINT32) Pci.Bridge.IoBase & 0xf0) << 8;
Limit = (((UINT32) Pci.Bridge.IoLimit & 0xf0) << 8) | 0x0fff;
if (Value == BIT0) {
Base |= ((UINT32) Pci.Bridge.IoBaseUpper16 << 16);
Limit |= ((UINT32) Pci.Bridge.IoLimitUpper16 << 16);
}
if ((Base > 0) && (Base < Limit)) {
if (Io.Base > Base) {
Io.Base = Base;
}
if (Io.Limit < Limit) {
Io.Limit = Limit;
}
}
//
// Get the Memory range that the PPB is decoding
//
Base = ((UINT32) Pci.Bridge.MemoryBase & 0xfff0) << 16;
Limit = (((UINT32) Pci.Bridge.MemoryLimit & 0xfff0) << 16) | 0xfffff;
if ((Base > 0) && (Base < Limit)) {
if (Mem.Base > Base) {
Mem.Base = Base;
}
if (Mem.Limit < Limit) {
Mem.Limit = Limit;
}
}
//
// Get the Prefetchable Memory range that the PPB is decoding
//
Value = Pci.Bridge.PrefetchableMemoryBase & 0x0f;
Base = ((UINT32) Pci.Bridge.PrefetchableMemoryBase & 0xfff0) << 16;
Limit = (((UINT32) Pci.Bridge.PrefetchableMemoryLimit & 0xfff0)
<< 16) | 0xfffff;
MemAperture = &PMem;
if (Value == BIT0) {
Base |= LShiftU64 (Pci.Bridge.PrefetchableBaseUpper32, 32);
Limit |= LShiftU64 (Pci.Bridge.PrefetchableLimitUpper32, 32);
MemAperture = &PMemAbove4G;
}
if ((Base > 0) && (Base < Limit)) {
if (MemAperture->Base > Base) {
MemAperture->Base = Base;
}
if (MemAperture->Limit < Limit) {
MemAperture->Limit = Limit;
}
}
//
// Look at the PPB Configuration for legacy decoding attributes
//
if ((Pci.Bridge.BridgeControl & EFI_PCI_BRIDGE_CONTROL_ISA)
== EFI_PCI_BRIDGE_CONTROL_ISA) {
Attributes |= EFI_PCI_ATTRIBUTE_ISA_IO;
Attributes |= EFI_PCI_ATTRIBUTE_ISA_IO_16;
Attributes |= EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO;
}
if ((Pci.Bridge.BridgeControl & EFI_PCI_BRIDGE_CONTROL_VGA)
== EFI_PCI_BRIDGE_CONTROL_VGA) {
Attributes |= EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO;
Attributes |= EFI_PCI_ATTRIBUTE_VGA_MEMORY;
Attributes |= EFI_PCI_ATTRIBUTE_VGA_IO;
if ((Pci.Bridge.BridgeControl & EFI_PCI_BRIDGE_CONTROL_VGA_16)
!= 0) {
Attributes |= EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO_16;
Attributes |= EFI_PCI_ATTRIBUTE_VGA_IO_16;
}
}
BarOffsetEnd = OFFSET_OF (PCI_TYPE01, Bridge.Bar[2]);
} else {
//
// Parse the BARs of the PCI device to get what I/O Ranges, Memory
// Ranges, and Prefetchable Memory Ranges the device is decoding
//
if ((Pci.Hdr.HeaderType & HEADER_LAYOUT_CODE) == HEADER_TYPE_DEVICE) {
BarOffsetEnd = OFFSET_OF (PCI_TYPE00, Device.Bar[6]);
}
}
PcatPciRootBridgeParseBars (
Pci.Hdr.Command,
PrimaryBus,
Device,
Function,
OFFSET_OF (PCI_TYPE00, Device.Bar),
BarOffsetEnd,
&Io,
&Mem, &MemAbove4G,
&PMem, &PMemAbove4G
);
//
// See if the PCI device is an IDE controller
//
if (IS_CLASS2 (&Pci, PCI_CLASS_MASS_STORAGE,
PCI_CLASS_MASS_STORAGE_IDE)) {
if (Pci.Hdr.ClassCode[0] & 0x80) {
Attributes |= EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO;
Attributes |= EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO;
}
if (Pci.Hdr.ClassCode[0] & 0x01) {
Attributes |= EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO;
}
if (Pci.Hdr.ClassCode[0] & 0x04) {
Attributes |= EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO;
}
}
//
// See if the PCI device is a legacy VGA controller or
// a standard VGA controller
//
if (IS_CLASS2 (&Pci, PCI_CLASS_OLD, PCI_CLASS_OLD_VGA) ||
IS_CLASS2 (&Pci, PCI_CLASS_DISPLAY, PCI_CLASS_DISPLAY_VGA)
) {
Attributes |= EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO;
Attributes |= EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO_16;
Attributes |= EFI_PCI_ATTRIBUTE_VGA_MEMORY;
Attributes |= EFI_PCI_ATTRIBUTE_VGA_IO;
Attributes |= EFI_PCI_ATTRIBUTE_VGA_IO_16;
}
//
// See if the PCI Device is a PCI - ISA or PCI - EISA
// or ISA_POSITIVIE_DECODE Bridge device
//
if (Pci.Hdr.ClassCode[2] == PCI_CLASS_BRIDGE) {
if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA ||
Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_EISA ||
Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA_PDECODE) {
Attributes |= EFI_PCI_ATTRIBUTE_ISA_IO;
Attributes |= EFI_PCI_ATTRIBUTE_ISA_IO_16;
Attributes |= EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO;
}
}
//
// If this device is not a multi function device, then skip the rest
// of this PCI device
//
if (Function == 0 && !IS_PCI_MULTI_FUNC (&Pci)) {
break;
}
}
}
//
// If at least one PCI device was found on the primary bus of this PCI
// root bridge, then the PCI root bridge exists.
//
if (NumberOfDevices > 0) {
RootBridges = ReallocatePool (
(*NumberOfRootBridges) * sizeof (PCI_ROOT_BRIDGE),
(*NumberOfRootBridges + 1) * sizeof (PCI_ROOT_BRIDGE),
RootBridges
);
ASSERT (RootBridges != NULL);
AdjustRootBridgeResource (&Io, &Mem, &MemAbove4G, &PMem, &PMemAbove4G);
InitRootBridge (
Attributes, Attributes, 0,
(UINT8) PrimaryBus, (UINT8) SubBus,
&Io, &Mem, &MemAbove4G, &PMem, &PMemAbove4G,
&RootBridges[*NumberOfRootBridges]
);
RootBridges[*NumberOfRootBridges].ResourceAssigned = TRUE;
//
// Increment the index for the next PCI Root Bridge
//
(*NumberOfRootBridges)++;
}
}
return RootBridges;
}