8f35eb92c4
Now that the previous patches ensure that we can access all PCI devices in
AcpiPlatformDxe, we can enable IO and MMIO decoding for all of them while
we contact QEMU for the ACPI tables. See more details in the patch titled:
OvmfPkg: introduce gRootBridgesConnectedEventGroupGuid
In particular, this patch will prevent the bug when the 64-bit MMIO
aperture is completely missing from QEMU's _CRS, and consequently Linux
rejects 64-bit BARs with the error message
pci 0000:00:03.0: can't claim BAR 4 [mem 0x800000000-0x8007fffff 64bit
pref]: no compatible bridge window
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
/** @file
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Sample ACPI Platform Driver
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Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _ACPI_PLATFORM_H_INCLUDED_
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#define _ACPI_PLATFORM_H_INCLUDED_
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#include <PiDxe.h>
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#include <Protocol/AcpiTable.h>
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#include <Protocol/FirmwareVolume2.h>
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#include <Protocol/PciIo.h>
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#include <Library/BaseLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PcdLib.h>
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#include <IndustryStandard/Acpi.h>
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typedef struct {
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EFI_PCI_IO_PROTOCOL *PciIo;
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UINT64 PciAttributes;
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} ORIGINAL_ATTRIBUTES;
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EFI_STATUS
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EFIAPI
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InstallAcpiTable (
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IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,
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IN VOID *AcpiTableBuffer,
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IN UINTN AcpiTableBufferSize,
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OUT UINTN *TableKey
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);
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BOOLEAN
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QemuDetected (
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VOID
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);
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EFI_STATUS
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EFIAPI
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QemuInstallAcpiTable (
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IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,
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IN VOID *AcpiTableBuffer,
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IN UINTN AcpiTableBufferSize,
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OUT UINTN *TableKey
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);
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BOOLEAN
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XenDetected (
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VOID
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);
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EFI_STATUS
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EFIAPI
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InstallXenTables (
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IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol
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);
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EFI_STATUS
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EFIAPI
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InstallQemuFwCfgTables (
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IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol
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);
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EFI_STATUS
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EFIAPI
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InstallAcpiTables (
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IN EFI_ACPI_TABLE_PROTOCOL *AcpiTable
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);
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VOID
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EnablePciDecoding (
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OUT ORIGINAL_ATTRIBUTES **OriginalAttributes,
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OUT UINTN *Count
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);
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VOID
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RestorePciDecoding (
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IN ORIGINAL_ATTRIBUTES *OriginalAttributes,
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IN UINTN Count
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);
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#endif
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