At this point, gEfiIsaAcpiProtocolGuid is unused; remove it.

This shrinks the list of resources scheduled for removal to:

- GUIDs (protocols or otherwise):
  - gEfiLegacy8259ProtocolGuid
  - gEfiLegacyBiosGuid
  - gEfiLegacyBiosPlatformProtocolGuid
  - gEfiLegacyBiosProtocolGuid
  - gEfiLegacyInterruptProtocolGuid

- headers:
  - FrameworkDxe.h
  - Guid/LegacyBios.h
  - Protocol/Legacy8259.h
  - Protocol/LegacyBios.h
  - Protocol/LegacyBiosPlatform.h
  - Protocol/LegacyInterrupt.h

- PCDs:
  - PcdEbdaReservedMemorySize
  - PcdEndOpromShadowAddress
  - PcdHighPmmMemorySize
  - PcdLegacyBiosCacheLegacyRegion
  - PcdLowPmmMemorySize
  - PcdOpromReservedMemoryBase
  - PcdOpromReservedMemorySize

Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org>
Cc: Gerd Hoffmann <kra...@redhat.com>
Cc: Jiewen Yao <jiewen....@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=4588
Signed-off-by: Laszlo Ersek <ler...@redhat.com>
---
 OvmfPkg/OvmfPkg.dec                    |   1 -
 OvmfPkg/Csm/Include/Protocol/IsaAcpi.h | 298 --------------------
 2 files changed, 299 deletions(-)

diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec
index 0b616c30a4ef..de4b6fe5c02b 100644
--- a/OvmfPkg/OvmfPkg.dec
+++ b/OvmfPkg/OvmfPkg.dec
@@ -185,7 +185,6 @@ [Protocols]
   gIoMmuAbsentProtocolGuid              = {0xf8775d50, 0x8abd, 0x4adf, {0x92, 
0xac, 0x85, 0x3e, 0x51, 0xf6, 0xc8, 0xdc}}
   gEfiLegacy8259ProtocolGuid            = {0x38321dba, 0x4fe0, 0x4e17, {0x8a, 
0xec, 0x41, 0x30, 0x55, 0xea, 0xed, 0xc1}}
   gEfiFirmwareVolumeProtocolGuid        = {0x389F751F, 0x1838, 0x4388, {0x83, 
0x90, 0xcd, 0x81, 0x54, 0xbd, 0x27, 0xf8}}
-  gEfiIsaAcpiProtocolGuid               = {0x64a892dc, 0x5561, 0x4536, {0x92, 
0xc7, 0x79, 0x9b, 0xfc, 0x18, 0x33, 0x55}}
   gEfiLegacyBiosProtocolGuid            = {0xdb9a1e3d, 0x45cb, 0x4abb, {0x85, 
0x3b, 0xe5, 0x38, 0x7f, 0xdb, 0x2e, 0x2d}}
   gEfiLegacyBiosPlatformProtocolGuid    = {0x783658a3, 0x4172, 0x4421, {0xa2, 
0x99, 0xe0, 0x09, 0x07, 0x9c, 0x0c, 0xb4}}
   gEfiLegacyInterruptProtocolGuid       = {0x31ce593d, 0x108a, 0x485d, {0xad, 
0xb2, 0x78, 0xf2, 0x1f, 0x29, 0x66, 0xbe}}
diff --git a/OvmfPkg/Csm/Include/Protocol/IsaAcpi.h 
b/OvmfPkg/Csm/Include/Protocol/IsaAcpi.h
deleted file mode 100644
index afb415a388ab..000000000000
--- a/OvmfPkg/Csm/Include/Protocol/IsaAcpi.h
+++ /dev/null
@@ -1,298 +0,0 @@
-/** @file
-  EFI ISA ACPI Protocol is used to enumerate and manage all the ISA 
controllers on
-  the platform's ISA Bus.
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#ifndef __ISA_ACPI_H_
-#define __ISA_ACPI_H_
-
-///
-/// Global ID for the EFI ISA ACPI Protocol.
-///
-#define EFI_ISA_ACPI_PROTOCOL_GUID \
-  { \
-    0x64a892dc, 0x5561, 0x4536, { 0x92, 0xc7, 0x79, 0x9b, 0xfc, 0x18, 0x33, 
0x55 } \
-  }
-
-///
-/// Forward declaration fo the EFI ISA ACPI Protocol
-///
-typedef struct _EFI_ISA_ACPI_PROTOCOL EFI_ISA_ACPI_PROTOCOL;
-
-///
-/// ISA ACPI Protocol interrupt resource attributes.
-///
-#define EFI_ISA_ACPI_IRQ_TYPE_HIGH_TRUE_EDGE_SENSITIVE   0x01   ///< Edge 
triggered interrupt on a rising edge.
-#define EFI_ISA_ACPI_IRQ_TYPE_LOW_TRUE_EDGE_SENSITIVE    0x02   ///< Edge 
triggered interrupt on a falling edge.
-#define EFI_ISA_ACPI_IRQ_TYPE_HIGH_TRUE_LEVEL_SENSITIVE  0x04   ///< Level 
sensitive interrupt active high.
-#define EFI_ISA_ACPI_IRQ_TYPE_LOW_TRUE_LEVEL_SENSITIVE   0x08   ///< Level 
sensitive interrupt active low.
-
-///
-/// ISA ACPI Protocol DMA resource attributes.
-///
-#define EFI_ISA_ACPI_DMA_SPEED_TYPE_MASK                 0x03   ///< Bit mask 
of supported DMA speed attributes.
-#define EFI_ISA_ACPI_DMA_SPEED_TYPE_COMPATIBILITY        0x00   ///< ISA 
controller supports compatibility mode DMA transfers.
-#define EFI_ISA_ACPI_DMA_SPEED_TYPE_A                    0x01   ///< ISA 
controller supports type A DMA transfers.
-#define EFI_ISA_ACPI_DMA_SPEED_TYPE_B                    0x02   ///< ISA 
controller supports type B DMA transfers.
-#define EFI_ISA_ACPI_DMA_SPEED_TYPE_F                    0x03   ///< ISA 
controller supports type F DMA transfers.
-#define EFI_ISA_ACPI_DMA_COUNT_BY_BYTE                   0x04   ///< ISA 
controller increments DMA address by bytes (8-bit).
-#define EFI_ISA_ACPI_DMA_COUNT_BY_WORD                   0x08   ///< ISA 
controller increments DMA address by words (16-bit).
-#define EFI_ISA_ACPI_DMA_BUS_MASTER                      0x10   ///< ISA 
controller is a DMA bus master.
-#define EFI_ISA_ACPI_DMA_TRANSFER_TYPE_8_BIT             0x20   ///< ISA 
controller only supports 8-bit DMA transfers.
-#define EFI_ISA_ACPI_DMA_TRANSFER_TYPE_8_BIT_AND_16_BIT  0x40   ///< ISA 
controller both 8-bit and 16-bit DMA transfers.
-#define EFI_ISA_ACPI_DMA_TRANSFER_TYPE_16_BIT            0x80   ///< ISA 
controller only supports 16-bit DMA transfers.
-
-///
-/// ISA ACPI Protocol MMIO resource attributes
-///
-#define EFI_ISA_ACPI_MEMORY_WIDTH_MASK              0x03        ///< Bit mask 
of supported ISA memory width attributes.
-#define EFI_ISA_ACPI_MEMORY_WIDTH_8_BIT             0x00        ///< ISA MMIO 
region only supports 8-bit access.
-#define EFI_ISA_ACPI_MEMORY_WIDTH_16_BIT            0x01        ///< ISA MMIO 
region only supports 16-bit access.
-#define EFI_ISA_ACPI_MEMORY_WIDTH_8_BIT_AND_16_BIT  0x02        ///< ISA MMIO 
region supports both 8-bit and 16-bit access.
-#define EFI_ISA_ACPI_MEMORY_WRITEABLE               0x04        ///< ISA MMIO 
region supports write transactions.
-#define EFI_ISA_ACPI_MEMORY_CACHEABLE               0x08        ///< ISA MMIO 
region supports being cached.
-#define EFI_ISA_ACPI_MEMORY_SHADOWABLE              0x10        ///< ISA MMIO 
region may be shadowed.
-#define EFI_ISA_ACPI_MEMORY_EXPANSION_ROM           0x20        ///< ISA MMIO 
region is an expansion ROM.
-
-///
-/// ISA ACPI Protocol I/O resource attributes
-///
-#define EFI_ISA_ACPI_IO_DECODE_10_BITS  0x01                     ///< ISA 
controllers uses a 10-bit address decoder for I/O cycles.
-#define EFI_ISA_ACPI_IO_DECODE_16_BITS  0x02                     ///< ISA 
controllers uses a 16-bit address decoder for I/O cycles.
-
-///
-/// EFI ISA ACPI resource type
-///
-typedef enum {
-  EfiIsaAcpiResourceEndOfList,    ///< Marks the end if a resource list.
-  EfiIsaAcpiResourceIo,           ///< ISA I/O port resource range.
-  EfiIsaAcpiResourceMemory,       ///< ISA MMIO resource range.
-  EfiIsaAcpiResourceDma,          ///< ISA DMA resource.
-  EfiIsaAcpiResourceInterrupt     ///< ISA interrupt resource.
-} EFI_ISA_ACPI_RESOURCE_TYPE;
-
-///
-/// EFI ISA ACPI generic resource structure
-///
-typedef struct {
-  EFI_ISA_ACPI_RESOURCE_TYPE    Type;       ///< The type of resource (I/O, 
MMIO, DMA, Interrupt).
-  UINT32                        Attribute;  ///< Bit mask of attributes 
associated with this resource.  See EFI_ISA_ACPI_xxx macros for valid 
combinations.
-  UINT32                        StartRange; ///< The start of the resource 
range.
-  UINT32                        EndRange;   ///< The end of the resource range.
-} EFI_ISA_ACPI_RESOURCE;
-
-///
-/// EFI ISA ACPI resource device identifier
-///
-typedef struct {
-  UINT32    HID; ///< The ACPI Hardware Identifier value associated with an 
ISA controller.  Matchs ACPI DSDT contents.
-  UINT32    UID; ///< The ACPI Unique Identifier value associated with an ISA 
controller.  Matches ACPI DSDT contents.
-} EFI_ISA_ACPI_DEVICE_ID;
-
-///
-/// EFI ISA ACPI resource list
-///
-typedef struct {
-  EFI_ISA_ACPI_DEVICE_ID    Device;        ///< The ACPI HID/UID associated 
with an ISA controller.
-  EFI_ISA_ACPI_RESOURCE     *ResourceItem; ///< A pointer to the list of 
resources associated with an ISA controller.
-} EFI_ISA_ACPI_RESOURCE_LIST;
-
-/**
-  Enumerates the ISA controllers on an ISA bus.
-
-  This service allows all the ISA controllers on an ISA bus to be enumerated.  
If
-  Device is a pointer to a NULL value, then the first ISA controller on the ISA
-  bus is returned in Device and EFI_SUCCESS is returned.  If Device is a 
pointer
-  to a value that was returned on a prior call to DeviceEnumerate(), then the 
next
-  ISA controller on the ISA bus is returned in Device and EFI_SUCCESS is 
returned.
-  If Device is a pointer to the last ISA controller on the ISA bus, then
-  EFI_NOT_FOUND is returned.
-
-  @param[in]  This     The pointer to the EFI_ISA_ACPI_PROTOCOL instance.
-  @param[out] Device   The pointer to an ISA controller named by ACPI HID/UID.
-
-  @retval EFI_SUCCESS    The next ISA controller on the ISA bus was returned.
-  @retval EFI_NOT_FOUND  No device found.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_ISA_ACPI_DEVICE_ENUMERATE)(
-  IN  EFI_ISA_ACPI_PROTOCOL   *This,
-  OUT EFI_ISA_ACPI_DEVICE_ID  **Device
-  );
-
-/**
-  Sets the power state of an ISA controller.
-
-  This services sets the power state of the ISA controller specified by Device 
to
-  the power state specified by OnOff.  TRUE denotes on, FALSE denotes off.
-  If the power state is successfully set on the ISA Controller, then
-  EFI_SUCCESS is returned.
-
-  @param[in] This     The pointer to the EFI_ISA_ACPI_PROTOCOL instance.
-  @param[in] Device   The pointer to an ISA controller named by ACPI HID/UID.
-  @param[in] OnOff    TRUE denotes on, FALSE denotes off.
-
-  @retval EFI_SUCCESS   Successfully set the power state of the ISA controller.
-  @retval Other         The ISA controller could not be placed in the 
requested power state.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_ISA_ACPI_SET_DEVICE_POWER)(
-  IN EFI_ISA_ACPI_PROTOCOL   *This,
-  IN EFI_ISA_ACPI_DEVICE_ID  *Device,
-  IN BOOLEAN                 OnOff
-  );
-
-/**
-  Retrieves the current set of resources associated with an ISA controller.
-
-  Retrieves the set of I/O, MMIO, DMA, and interrupt resources currently
-  assigned to the ISA controller specified by Device.  These resources
-  are returned in ResourceList.
-
-  @param[in]  This          The pointer to the EFI_ISA_ACPI_PROTOCOL instance.
-  @param[in]  Device        The pointer to an ISA controller named by ACPI 
HID/UID.
-  @param[out] ResourceList  The pointer to the current resource list for 
Device.
-
-  @retval EFI_SUCCESS    Successfully retrieved the current resource list.
-  @retval EFI_NOT_FOUND  The resource list could not be retrieved.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_ISA_ACPI_GET_CUR_RESOURCE)(
-  IN  EFI_ISA_ACPI_PROTOCOL       *This,
-  IN  EFI_ISA_ACPI_DEVICE_ID      *Device,
-  OUT EFI_ISA_ACPI_RESOURCE_LIST  **ResourceList
-  );
-
-/**
-  Retrieves the set of possible resources that may be assigned to an ISA 
controller
-  with SetResource().
-
-  Retrieves the possible sets of I/O, MMIO, DMA, and interrupt resources for 
the
-  ISA controller specified by Device.  The sets are returned in ResourceList.
-
-  @param[in]  This           The pointer to the EFI_ISA_ACPI_PROTOCOL instance.
-  @param[in]  Device         The pointer to an ISA controller named by ACPI 
HID/UID.
-  @param[out] ResourceList   The pointer to the returned list of resource 
lists.
-
-  @retval EFI_UNSUPPORTED  This service is not supported.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_ISA_ACPI_GET_POS_RESOURCE)(
-  IN EFI_ISA_ACPI_PROTOCOL        *This,
-  IN EFI_ISA_ACPI_DEVICE_ID       *Device,
-  OUT EFI_ISA_ACPI_RESOURCE_LIST  **ResourceList
-  );
-
-/**
-  Assigns resources to an ISA controller.
-
-  Assigns the I/O, MMIO, DMA, and interrupt resources specified by ResourceList
-  to the ISA controller specified by Device.  ResourceList must match a 
resource list returned by GetPosResource() for the same ISA controller.
-
-  @param[in] This           The pointer to the EFI_ISA_ACPI_PROTOCOL instance.
-  @param[in] Device         The pointer to an ISA controller named by ACPI 
HID/UID.
-  @param[in] ResourceList   The pointer to a resources list that must be one 
of the
-                            resource lists returned by GetPosResource() for the
-                            ISA controller specified by Device.
-
-  @retval EFI_SUCCESS  Successfully set resources on the ISA controller.
-  @retval Other        The resources could not be set for the ISA controller.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_ISA_ACPI_SET_RESOURCE)(
-  IN EFI_ISA_ACPI_PROTOCOL       *This,
-  IN EFI_ISA_ACPI_DEVICE_ID      *Device,
-  IN EFI_ISA_ACPI_RESOURCE_LIST  *ResourceList
-  );
-
-/**
-  Enables or disables an ISA controller.
-
-  @param[in] This     The pointer to the EFI_ISA_ACPI_PROTOCOL instance.
-  @param[in] Device   The pointer to the ISA controller to enable/disable.
-  @param[in] Enable   TRUE to enable the ISA controller.  FALSE to disable the
-                      ISA controller.
-
-  @retval EFI_SUCCESS   Successfully enabled/disabled the ISA controller.
-  @retval Other         The ISA controller could not be placed in the 
requested state.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_ISA_ACPI_ENABLE_DEVICE)(
-  IN EFI_ISA_ACPI_PROTOCOL   *This,
-  IN EFI_ISA_ACPI_DEVICE_ID  *Device,
-  IN BOOLEAN                 Enable
-  );
-
-/**
-  Initializes an ISA controller, so that it can be used.  This service must be 
called
-  before SetResource(), EnableDevice(), or SetPower() will behave as expected.
-
-  @param[in] This     The pointer to the EFI_ISA_ACPI_PROTOCOL instance.
-  @param[in] Device   The pointer to an ISA controller named by ACPI HID/UID.
-
-  @retval EFI_SUCCESS   Successfully initialized an ISA controller.
-  @retval Other         The ISA controller could not be initialized.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_ISA_ACPI_INIT_DEVICE)(
-  IN EFI_ISA_ACPI_PROTOCOL   *This,
-  IN EFI_ISA_ACPI_DEVICE_ID  *Device
-  );
-
-/**
-  Initializes all the HW states required for the ISA controllers on the ISA bus
-  to be enumerated and managed by the rest of the services in this prorotol.
-  This service must be called before any of the other services in this
-  protocol will function as expected.
-
-  @param[in] This  The pointer to the EFI_ISA_ACPI_PROTOCOL instance.
-
-  @retval EFI_SUCCESS   Successfully initialized all required hardware states.
-  @retval Other         The ISA interface could not be initialized.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_ISA_ACPI_INTERFACE_INIT)(
-  IN EFI_ISA_ACPI_PROTOCOL  *This
-  );
-
-///
-/// The EFI_ISA_ACPI_PROTOCOL provides the services to enumerate and manage
-/// ISA controllers on an ISA bus.  These services include the ability to 
initialize,
-/// enable, disable, and manage the power state of ISA controllers.  It also
-/// includes services to query current resources, query possible resources,
-/// and assign resources to an ISA controller.
-///
-struct _EFI_ISA_ACPI_PROTOCOL {
-  EFI_ISA_ACPI_DEVICE_ENUMERATE    DeviceEnumerate;
-  EFI_ISA_ACPI_SET_DEVICE_POWER    SetPower;
-  EFI_ISA_ACPI_GET_CUR_RESOURCE    GetCurResource;
-  EFI_ISA_ACPI_GET_POS_RESOURCE    GetPosResource;
-  EFI_ISA_ACPI_SET_RESOURCE        SetResource;
-  EFI_ISA_ACPI_ENABLE_DEVICE       EnableDevice;
-  EFI_ISA_ACPI_INIT_DEVICE         InitDevice;
-  EFI_ISA_ACPI_INTERFACE_INIT      InterfaceInit;
-};
-
-extern EFI_GUID  gEfiIsaAcpiProtocolGuid;
-
-#endif



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