This driver follows UEFI driver model and layers on ISA HC protocol defined in 
PI spec 1.2.1. It consumes the ISA Host Controller protocol produced by the ISA 
Host Controller and installs the ISA Host Controller Service Binding protocol 
on the ISA Host Controller's handle.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu...@intel.com>
CC: Star Zeng <star.z...@intel.com>
CC: Eric Dong <eric.d...@intel.com>
---
 Bus/Isa/IsaBusDxe/ComponentName.c | 180 +++++++++++++++
 Bus/Isa/IsaBusDxe/ComponentName.h | 151 +++++++++++++
 Bus/Isa/IsaBusDxe/IsaBusDxe.c     | 461 ++++++++++++++++++++++++++++++++++++++
 Bus/Isa/IsaBusDxe/IsaBusDxe.h     |  46 ++++
 Bus/Isa/IsaBusDxe/IsaBusDxe.inf   |  59 +++++
 MdeModulePkg.dsc                  |   1 +
 6 files changed, 898 insertions(+)
 create mode 100644 Bus/Isa/IsaBusDxe/ComponentName.c
 create mode 100644 Bus/Isa/IsaBusDxe/ComponentName.h
 create mode 100644 Bus/Isa/IsaBusDxe/IsaBusDxe.c
 create mode 100644 Bus/Isa/IsaBusDxe/IsaBusDxe.h
 create mode 100644 Bus/Isa/IsaBusDxe/IsaBusDxe.inf

diff --git a/Bus/Isa/IsaBusDxe/ComponentName.c 
b/Bus/Isa/IsaBusDxe/ComponentName.c
new file mode 100644
index 0000000..ff7bbef
--- /dev/null
+++ b/Bus/Isa/IsaBusDxe/ComponentName.c
@@ -0,0 +1,180 @@
+/** @file
+  UEFI Component Name(2) protocol implementation for IsaBusDxe driver.
+  
+  Copyright (c) 2015, 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 "ComponentName.h"
+#include <Library/UefiLib.h>
+
+//
+// Driver name table 
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE     
mIsaBusDriverNameTable[] = {
+  { "eng;en", L"PI ISA BUS Driver" },
+  { NULL , NULL }
+};
+
+//
+// EFI Component Name Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL  
gIsaBusComponentName = {
+  IsaBusComponentNameGetDriverName,
+  IsaBusComponentNameGetControllerName,
+  "eng"
+};
+
+//
+// EFI Component Name 2 Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL 
gIsaBusComponentName2 = {
+  (EFI_COMPONENT_NAME2_GET_DRIVER_NAME) IsaBusComponentNameGetDriverName,
+  (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) 
IsaBusComponentNameGetControllerName,
+  "en"
+};
+
+/**
+  Retrieves a Unicode string that is the user readable name of the driver.
+
+  This function retrieves the user readable name of a driver in the form of a
+  Unicode string. If the driver specified by This has a user readable name in
+  the language specified by Language, then a pointer to the driver name is
+  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
+  by This does not support the language specified by Language,
+  then EFI_UNSUPPORTED is returned.
+
+  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL 
or
+                                EFI_COMPONENT_NAME_PROTOCOL instance.
+
+  @param  Language[in]          A pointer to a Null-terminated ASCII string
+                                array indicating the language. This is the
+                                language of the driver name that the caller is
+                                requesting, and it must match one of the
+                                languages specified in SupportedLanguages. The
+                                number of languages supported by a driver is up
+                                to the driver writer. Language is specified
+                                in RFC 4646 or ISO 639-2 language code format.
+
+  @param  DriverName[out]       A pointer to the Unicode string to return.
+                                This Unicode string is the name of the
+                                driver specified by This in the language
+                                specified by Language.
+
+  @retval EFI_SUCCESS           The Unicode string for the Driver specified by
+                                This and the language specified by Language was
+                                returned in DriverName.
+
+  @retval EFI_INVALID_PARAMETER Language is NULL.
+
+  @retval EFI_INVALID_PARAMETER DriverName is NULL.
+
+  @retval EFI_UNSUPPORTED       The driver specified by This does not support
+                                the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusComponentNameGetDriverName (
+  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
+  IN  CHAR8                        *Language,
+  OUT CHAR16                       **DriverName
+  )
+{
+  return LookupUnicodeString2 (
+           Language,
+           This->SupportedLanguages,
+           mIsaBusDriverNameTable,
+           DriverName,
+           (BOOLEAN)(This == &gIsaBusComponentName)
+           );
+}
+
+
+/**
+  Retrieves a Unicode string that is the user readable name of the controller
+  that is being managed by a driver.
+
+  This function retrieves the user readable name of the controller specified by
+  ControllerHandle and ChildHandle in the form of a Unicode string. If the
+  driver specified by This has a user readable name in the language specified 
by
+  Language, then a pointer to the controller name is returned in 
ControllerName,
+  and EFI_SUCCESS is returned.  If the driver specified by This is not 
currently
+  managing the controller specified by ControllerHandle and ChildHandle,
+  then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
+  support the language specified by Language, then EFI_UNSUPPORTED is returned.
+
+  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL 
or
+                                EFI_COMPONENT_NAME_PROTOCOL instance.
+
+  @param  ControllerHandle[in]  The handle of a controller that the driver
+                                specified by This is managing.  This handle
+                                specifies the controller whose name is to be
+                                returned.
+
+  @param  ChildHandle[in]       The handle of the child controller to retrieve
+                                the name of.  This is an optional parameter 
that
+                                may be NULL.  It will be NULL for device
+                                drivers.  It will also be NULL for a bus 
drivers
+                                that wish to retrieve the name of the bus
+                                controller.  It will not be NULL for a bus
+                                driver that wishes to retrieve the name of a
+                                child controller.
+
+  @param  Language[in]          A pointer to a Null-terminated ASCII string
+                                array indicating the language.  This is the
+                                language of the driver name that the caller is
+                                requesting, and it must match one of the
+                                languages specified in SupportedLanguages. The
+                                number of languages supported by a driver is up
+                                to the driver writer. Language is specified in
+                                RFC 4646 or ISO 639-2 language code format.
+
+  @param  ControllerName[out]   A pointer to the Unicode string to return.
+                                This Unicode string is the name of the
+                                controller specified by ControllerHandle and
+                                ChildHandle in the language specified by
+                                Language from the point of view of the driver
+                                specified by This.
+
+  @retval EFI_SUCCESS           The Unicode string for the user readable name 
in
+                                the language specified by Language for the
+                                driver specified by This was returned in
+                                DriverName.
+
+  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
+
+  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
+                                EFI_HANDLE.
+
+  @retval EFI_INVALID_PARAMETER Language is NULL.
+
+  @retval EFI_INVALID_PARAMETER ControllerName is NULL.
+
+  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
+                                managing the controller specified by
+                                ControllerHandle and ChildHandle.
+
+  @retval EFI_UNSUPPORTED       The driver specified by This does not support
+                                the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusComponentNameGetControllerName (
+  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
+  IN  EFI_HANDLE                                      ControllerHandle,
+  IN  EFI_HANDLE                                      ChildHandle        
OPTIONAL,
+  IN  CHAR8                                           *Language,
+  OUT CHAR16                                          **ControllerName
+  )
+{
+  return EFI_UNSUPPORTED;
+}
diff --git a/Bus/Isa/IsaBusDxe/ComponentName.h 
b/Bus/Isa/IsaBusDxe/ComponentName.h
new file mode 100644
index 0000000..f533971
--- /dev/null
+++ b/Bus/Isa/IsaBusDxe/ComponentName.h
@@ -0,0 +1,151 @@
+/** @file
+  UEFI Component Name(2) protocol implementation for IsaBusDxe driver.
+  
+  Copyright (c) 2015, 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 _ISA_BUS_COMPONENT_NAME_H_
+#define _ISA_BUS_COMPONENT_NAME_H_
+
+#include <Uefi.h>
+#include <Protocol/ComponentName.h>
+#include <Protocol/ComponentName2.h>
+
+extern EFI_COMPONENT_NAME_PROTOCOL  gIsaBusComponentName;
+extern EFI_COMPONENT_NAME2_PROTOCOL gIsaBusComponentName2;
+
+/**
+  Retrieves a Unicode string that is the user readable name of the driver.
+
+  This function retrieves the user readable name of a driver in the form of a
+  Unicode string. If the driver specified by This has a user readable name in
+  the language specified by Language, then a pointer to the driver name is
+  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
+  by This does not support the language specified by Language,
+  then EFI_UNSUPPORTED is returned.
+
+  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL 
or
+                                EFI_COMPONENT_NAME_PROTOCOL instance.
+
+  @param  Language[in]          A pointer to a Null-terminated ASCII string
+                                array indicating the language. This is the
+                                language of the driver name that the caller is
+                                requesting, and it must match one of the
+                                languages specified in SupportedLanguages. The
+                                number of languages supported by a driver is up
+                                to the driver writer. Language is specified
+                                in RFC 4646 or ISO 639-2 language code format.
+
+  @param  DriverName[out]       A pointer to the Unicode string to return.
+                                This Unicode string is the name of the
+                                driver specified by This in the language
+                                specified by Language.
+
+  @retval EFI_SUCCESS           The Unicode string for the Driver specified by
+                                This and the language specified by Language was
+                                returned in DriverName.
+
+  @retval EFI_INVALID_PARAMETER Language is NULL.
+
+  @retval EFI_INVALID_PARAMETER DriverName is NULL.
+
+  @retval EFI_UNSUPPORTED       The driver specified by This does not support
+                                the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusComponentNameGetDriverName (
+  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
+  IN  CHAR8                        *Language,
+  OUT CHAR16                       **DriverName
+  );
+
+
+/**
+  Retrieves a Unicode string that is the user readable name of the controller
+  that is being managed by a driver.
+
+  This function retrieves the user readable name of the controller specified by
+  ControllerHandle and ChildHandle in the form of a Unicode string. If the
+  driver specified by This has a user readable name in the language specified 
by
+  Language, then a pointer to the controller name is returned in 
ControllerName,
+  and EFI_SUCCESS is returned.  If the driver specified by This is not 
currently
+  managing the controller specified by ControllerHandle and ChildHandle,
+  then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
+  support the language specified by Language, then EFI_UNSUPPORTED is returned.
+
+  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL 
or
+                                EFI_COMPONENT_NAME_PROTOCOL instance.
+
+  @param  ControllerHandle[in]  The handle of a controller that the driver
+                                specified by This is managing.  This handle
+                                specifies the controller whose name is to be
+                                returned.
+
+  @param  ChildHandle[in]       The handle of the child controller to retrieve
+                                the name of.  This is an optional parameter 
that
+                                may be NULL.  It will be NULL for device
+                                drivers.  It will also be NULL for a bus 
drivers
+                                that wish to retrieve the name of the bus
+                                controller.  It will not be NULL for a bus
+                                driver that wishes to retrieve the name of a
+                                child controller.
+
+  @param  Language[in]          A pointer to a Null-terminated ASCII string
+                                array indicating the language.  This is the
+                                language of the driver name that the caller is
+                                requesting, and it must match one of the
+                                languages specified in SupportedLanguages. The
+                                number of languages supported by a driver is up
+                                to the driver writer. Language is specified in
+                                RFC 4646 or ISO 639-2 language code format.
+
+  @param  ControllerName[out]   A pointer to the Unicode string to return.
+                                This Unicode string is the name of the
+                                controller specified by ControllerHandle and
+                                ChildHandle in the language specified by
+                                Language from the point of view of the driver
+                                specified by This.
+
+  @retval EFI_SUCCESS           The Unicode string for the user readable name 
in
+                                the language specified by Language for the
+                                driver specified by This was returned in
+                                DriverName.
+
+  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
+
+  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
+                                EFI_HANDLE.
+
+  @retval EFI_INVALID_PARAMETER Language is NULL.
+
+  @retval EFI_INVALID_PARAMETER ControllerName is NULL.
+
+  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
+                                managing the controller specified by
+                                ControllerHandle and ChildHandle.
+
+  @retval EFI_UNSUPPORTED       The driver specified by This does not support
+                                the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusComponentNameGetControllerName (
+  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
+  IN  EFI_HANDLE                                      ControllerHandle,
+  IN  EFI_HANDLE                                      ChildHandle        
OPTIONAL,
+  IN  CHAR8                                           *Language,
+  OUT CHAR16                                          **ControllerName
+  );
+
+#endif
diff --git a/Bus/Isa/IsaBusDxe/IsaBusDxe.c b/Bus/Isa/IsaBusDxe/IsaBusDxe.c
new file mode 100644
index 0000000..7067c6e
--- /dev/null
+++ b/Bus/Isa/IsaBusDxe/IsaBusDxe.c
@@ -0,0 +1,461 @@
+/** @file
+  This file consumes the ISA Host Controller protocol produced by the ISA Host
+  Controller and installs the ISA Host Controller Service Binding protocol
+  on the ISA Host Controller's handle.
+
+  Copyright (c) 2015, 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 "IsaBusDxe.h"
+#include "ComponentName.h"
+
+/**
+  Tests to see if this driver supports a given controller. If a child device 
is provided, 
+  it further tests to see if this driver supports creating a handle for the 
specified child device.
+
+  @param[in]  This                 A pointer to the 
EFI_DRIVER_BINDING_PROTOCOL instance.
+  @param[in]  ControllerHandle     The handle of the controller to test. This 
handle 
+                                   must support a protocol interface that 
supplies 
+                                   an I/O abstraction to the driver.
+  @param[in]  RemainingDevicePath  A pointer to the remaining portion of a 
device path.  This 
+                                   parameter is ignored by device drivers, and 
is optional for bus 
+                                   drivers. For bus drivers, if this parameter 
is not NULL, then 
+                                   the bus driver must determine if the bus 
controller specified 
+                                   by ControllerHandle and the child 
controller specified 
+                                   by RemainingDevicePath are both supported 
by this 
+                                   bus driver.
+
+  @retval EFI_SUCCESS              The device specified by ControllerHandle and
+                                   RemainingDevicePath is supported by the 
driver specified by This.
+  @retval EFI_ALREADY_STARTED      The device specified by ControllerHandle and
+                                   RemainingDevicePath is already being 
managed by the driver
+                                   specified by This.
+  @retval EFI_ACCESS_DENIED        The device specified by ControllerHandle and
+                                   RemainingDevicePath is already being 
managed by a different
+                                   driver or an application that requires 
exclusive access.
+                                   Currently not implemented.
+  @retval EFI_UNSUPPORTED          The device specified by ControllerHandle and
+                                   RemainingDevicePath is not supported by the 
driver specified by This.
+**/
+EFI_STATUS
+EFIAPI
+IsaBusDriverBindingSupported (
+  IN EFI_DRIVER_BINDING_PROTOCOL    *This,
+  IN EFI_HANDLE                     Controller,
+  IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
+  )
+{
+  EFI_STATUS                        Status;
+  VOID                              *Instance;
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiIsaHcProtocolGuid,
+                  &Instance,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_BY_DRIVER
+                  );
+  if (!EFI_ERROR (Status)) {
+    gBS->CloseProtocol (
+      Controller,
+      &gEfiIsaHcProtocolGuid,
+      This->DriverBindingHandle,
+      Controller
+      );
+  }
+
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiDevicePathProtocolGuid,
+                  &Instance,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_BY_DRIVER
+                  );
+  if (!EFI_ERROR (Status)) {
+    gBS->CloseProtocol (
+      Controller,
+      &gEfiDevicePathProtocolGuid,
+      This->DriverBindingHandle,
+      Controller
+      );
+  }
+
+  return Status;
+}
+
+ISA_BUS_CHILD_PRIVATE_DATA mIsaBusChildPrivateTemplate = {
+  ISA_BUS_CHILD_PRIVATE_DATA_SIGNATURE,
+  FALSE
+};
+
+/**
+  Creates a child handle and installs a protocol.
+  
+  The CreateChild() function installs a protocol on ChildHandle. 
+  If ChildHandle is a pointer to NULL, then a new handle is created and 
returned in ChildHandle. 
+  If ChildHandle is not a pointer to NULL, then the protocol installs on the 
existing ChildHandle.
+
+  @param  This        Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
+  @param  ChildHandle Pointer to the handle of the child to create. If it is 
NULL,
+                      then a new handle is created. If it is a pointer to an 
existing UEFI handle, 
+                      then the protocol is added to the existing UEFI handle.
+
+  @retval EFI_SUCCES            The protocol was added to ChildHandle.
+  @retval EFI_INVALID_PARAMETER ChildHandle is NULL.
+  @retval EFI_OUT_OF_RESOURCES  There are not enough resources availabe to 
create
+                                the child
+  @retval other                 The child handle was not created
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusCreateChild (
+  IN     EFI_SERVICE_BINDING_PROTOCOL  *This,
+  IN OUT EFI_HANDLE                    *ChildHandle
+  )
+{
+  EFI_STATUS                           Status;
+  ISA_BUS_PRIVATE_DATA                 *Private;
+  EFI_ISA_HC_PROTOCOL                  *IsaHc;
+  ISA_BUS_CHILD_PRIVATE_DATA           *Child;
+
+  Private = ISA_BUS_PRIVATE_DATA_FROM_THIS (This);
+
+  Child = AllocateCopyPool (sizeof (mIsaBusChildPrivateTemplate), 
&mIsaBusChildPrivateTemplate);
+  if (Child == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  Status = gBS->InstallMultipleProtocolInterfaces (
+                  ChildHandle,
+                  &gEfiIsaHcProtocolGuid, Private->IsaHc,
+                  &gEfiCallerIdGuid,      Child,
+                  NULL
+                  );
+  if (EFI_ERROR (Status)) {
+    FreePool (Child);
+    return Status;
+  }
+
+  return gBS->OpenProtocol (
+                Private->IsaHcHandle,
+                &gEfiIsaHcProtocolGuid,
+                (VOID **) &IsaHc,
+                gIsaBusDriverBinding.DriverBindingHandle,
+                *ChildHandle,
+                EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+                );
+}
+
+/**
+  Destroys a child handle with a protocol installed on it.
+  
+  The DestroyChild() function does the opposite of CreateChild(). It removes a 
protocol 
+  that was installed by CreateChild() from ChildHandle. If the removed 
protocol is the 
+  last protocol on ChildHandle, then ChildHandle is destroyed.
+
+  @param  This        Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
+  @param  ChildHandle Handle of the child to destroy
+
+  @retval EFI_SUCCES            The protocol was removed from ChildHandle.
+  @retval EFI_UNSUPPORTED       ChildHandle does not support the protocol that 
is being removed.
+  @retval EFI_INVALID_PARAMETER Child handle is NULL.
+  @retval EFI_ACCESS_DENIED     The protocol could not be removed from the 
ChildHandle
+                                because its services are being used.
+  @retval other                 The child handle was not destroyed
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusDestroyChild (
+  IN EFI_SERVICE_BINDING_PROTOCOL     *This,
+  IN EFI_HANDLE                       ChildHandle
+  )
+{
+  EFI_STATUS                           Status;
+  ISA_BUS_PRIVATE_DATA                 *Private;
+  EFI_ISA_HC_PROTOCOL                  *IsaHc;
+  ISA_BUS_CHILD_PRIVATE_DATA           *Child;
+
+  Private = ISA_BUS_PRIVATE_DATA_FROM_THIS (This);
+
+  Status = gBS->OpenProtocol (
+                  ChildHandle,
+                  &gEfiCallerIdGuid,
+                  (VOID **) &Child,
+                  gIsaBusDriverBinding.DriverBindingHandle,
+                  ChildHandle,
+                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
+                  );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  ASSERT (Child->Signature == ISA_BUS_CHILD_PRIVATE_DATA_SIGNATURE);
+
+  if (Child->InDestroying) {
+    return EFI_SUCCESS;
+  }
+
+  Child->InDestroying = TRUE;
+  Status = gBS->CloseProtocol (
+                  Private->IsaHcHandle,
+                  &gEfiIsaHcProtocolGuid,
+                  gIsaBusDriverBinding.DriverBindingHandle,
+                  ChildHandle
+                  );
+  ASSERT_EFI_ERROR (Status);
+  if (!EFI_ERROR (Status)) {
+    Status = gBS->UninstallMultipleProtocolInterfaces (
+                    ChildHandle,
+                    &gEfiIsaHcProtocolGuid, Private->IsaHc,
+                    &gEfiCallerIdGuid,      Child,
+                    NULL
+                    );
+    if (EFI_ERROR (Status)) {
+      gBS->OpenProtocol (
+             Private->IsaHcHandle,
+             &gEfiIsaHcProtocolGuid,
+             (VOID **) &IsaHc,
+             gIsaBusDriverBinding.DriverBindingHandle,
+             ChildHandle,
+             EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+             );
+    }
+  }
+
+  if (EFI_ERROR (Status)) {
+    Child->InDestroying = FALSE;
+  } else {
+    FreePool (Child);
+  }
+
+  return Status;
+}
+
+ISA_BUS_PRIVATE_DATA   mIsaBusPrivateTemplate = {
+  ISA_BUS_PRIVATE_DATA_SIGNATURE,
+  {
+    IsaBusCreateChild,
+    IsaBusDestroyChild
+  }
+};
+
+/**
+  Starts a device controller or a bus controller.
+
+  @param[in]  This                 A pointer to the 
EFI_DRIVER_BINDING_PROTOCOL instance.
+  @param[in]  ControllerHandle     The handle of the controller to start. This 
handle 
+                                   must support a protocol interface that 
supplies 
+                                   an I/O abstraction to the driver.
+  @param[in]  RemainingDevicePath  A pointer to the remaining portion of a 
device path.  This 
+                                   parameter is ignored by device drivers, and 
is optional for bus 
+                                   drivers. For a bus driver, if this 
parameter is NULL, then handles 
+                                   for all the children of Controller are 
created by this driver.  
+                                   If this parameter is not NULL and the first 
Device Path Node is 
+                                   not the End of Device Path Node, then only 
the handle for the 
+                                   child device specified by the first Device 
Path Node of 
+                                   RemainingDevicePath is created by this 
driver.
+                                   If the first Device Path Node of 
RemainingDevicePath is 
+                                   the End of Device Path Node, no child 
handle is created by this
+                                   driver.
+
+  @retval EFI_SUCCESS              The device was started.
+  @retval EFI_DEVICE_ERROR         The device could not be started due to a 
device error.Currently not implemented.
+  @retval EFI_OUT_OF_RESOURCES     The request could not be completed due to a 
lack of resources.
+  @retval Others                   The driver failded to start the device.
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusDriverBindingStart (
+  IN EFI_DRIVER_BINDING_PROTOCOL    *This,
+  IN EFI_HANDLE                     Controller,
+  IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
+  )
+{
+  EFI_STATUS                        Status;
+  EFI_DEVICE_PATH_PROTOCOL          *DevicePath;
+  ISA_BUS_PRIVATE_DATA              *Private;
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiIsaHcProtocolGuid,
+                  (VOID **) &mIsaBusPrivateTemplate.IsaHc,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_BY_DRIVER
+                  );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiDevicePathProtocolGuid,
+                  (VOID **) &DevicePath,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_BY_DRIVER
+                  );
+  if (EFI_ERROR (Status)) {
+    gBS->CloseProtocol (
+           Controller,
+           &gEfiIsaHcProtocolGuid,
+           This->DriverBindingHandle,
+           Controller
+           );
+    return Status;
+  }
+
+  Private = AllocateCopyPool (sizeof (mIsaBusPrivateTemplate), 
&mIsaBusPrivateTemplate);
+  ASSERT (Private != NULL);
+
+  Private->IsaHcHandle = Controller;
+
+  Status = gBS->InstallMultipleProtocolInterfaces (
+                  &Controller,
+                  &gEfiIsaHcServiceBindingProtocolGuid, 
&Private->ServiceBinding,
+                  NULL
+                  );
+  ASSERT_EFI_ERROR (Status);
+
+  return Status;
+}
+
+/**
+  Stops a device controller or a bus controller.
+  
+  @param[in]  This              A pointer to the EFI_DRIVER_BINDING_PROTOCOL 
instance.
+  @param[in]  ControllerHandle  A handle to the device being stopped. The 
handle must 
+                                support a bus specific I/O protocol for the 
driver 
+                                to use to stop the device.
+  @param[in]  NumberOfChildren  The number of child device handles in 
ChildHandleBuffer.
+  @param[in]  ChildHandleBuffer An array of child handles to be freed. May be 
NULL 
+                                if NumberOfChildren is 0.
+
+  @retval EFI_SUCCESS           The device was stopped.
+  @retval EFI_DEVICE_ERROR      The device could not be stopped due to a 
device error.
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusDriverBindingStop (
+  IN  EFI_DRIVER_BINDING_PROTOCOL    *This,
+  IN  EFI_HANDLE                     Controller,
+  IN  UINTN                          NumberOfChildren,
+  IN  EFI_HANDLE                     *ChildHandleBuffer
+  )
+{
+  EFI_STATUS                         Status;
+  EFI_SERVICE_BINDING_PROTOCOL       *ServiceBinding;
+  ISA_BUS_PRIVATE_DATA               *Private;
+  UINTN                              Index;
+  BOOLEAN                            AllChildrenStopped;
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiIsaHcServiceBindingProtocolGuid,
+                  (VOID **) &ServiceBinding,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
+                  );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  Private = ISA_BUS_PRIVATE_DATA_FROM_THIS (ServiceBinding);
+
+  if (NumberOfChildren == 0) {
+    Status = gBS->UninstallMultipleProtocolInterfaces (
+                    Controller,
+                    &gEfiIsaHcServiceBindingProtocolGuid, 
&Private->ServiceBinding,
+                    NULL
+                    );
+    if (!EFI_ERROR (Status)) {
+      gBS->CloseProtocol (
+             Controller,
+             &gEfiDevicePathProtocolGuid,
+             This->DriverBindingHandle,
+             Controller
+             );
+      gBS->CloseProtocol (
+             Controller,
+             &gEfiIsaHcProtocolGuid,
+             This->DriverBindingHandle,
+             Controller
+             );
+      FreePool (Private);
+    }
+
+    return Status;
+  }
+
+  AllChildrenStopped = TRUE;
+  for (Index = 0; Index < NumberOfChildren; Index++) {
+    Status = ServiceBinding->DestroyChild (ServiceBinding, 
ChildHandleBuffer[Index]);
+    if (EFI_ERROR (Status)) {
+      AllChildrenStopped = FALSE;
+    }
+  }
+
+  return AllChildrenStopped ? EFI_SUCCESS : EFI_DEVICE_ERROR;
+}
+
+//
+// ISA Bus Driver Binding Protocol Instance
+//
+EFI_DRIVER_BINDING_PROTOCOL gIsaBusDriverBinding = {
+  IsaBusDriverBindingSupported,
+  IsaBusDriverBindingStart,
+  IsaBusDriverBindingStop,
+  0x10,
+  NULL,
+  NULL
+};
+
+/**
+  Entry point of the IsaBusDxe driver.
+  
+  @param[in] ImageHandle    The firmware allocated handle for the EFI image.  
+  @param[in] SystemTable    A pointer to the EFI System Table.
+  
+  @retval EFI_SUCCESS       The entry point is executed successfully.
+  @retval other             Some error occurs when executing this entry point.
+**/
+EFI_STATUS
+EFIAPI
+InitializeIsaBus (
+  IN EFI_HANDLE        ImageHandle,
+  IN EFI_SYSTEM_TABLE  *SystemTable
+  )
+{
+  EFI_STATUS           Status;
+  
+  Status = EfiLibInstallDriverBindingComponentName2 (
+             ImageHandle,
+             SystemTable,
+             &gIsaBusDriverBinding,
+             ImageHandle,
+             &gIsaBusComponentName,
+             &gIsaBusComponentName2
+             );
+  ASSERT_EFI_ERROR (Status);
+  return Status;
+}
diff --git a/Bus/Isa/IsaBusDxe/IsaBusDxe.h b/Bus/Isa/IsaBusDxe/IsaBusDxe.h
new file mode 100644
index 0000000..86f6f56
--- /dev/null
+++ b/Bus/Isa/IsaBusDxe/IsaBusDxe.h
@@ -0,0 +1,46 @@
+/** @file
+  Header file for the ISA BUS driver.
+
+  Copyright (c) 2015, 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 _ISA_BUS_H_
+#define _ISA_BUS_H_
+
+#include <Uefi.h>
+#include <Protocol/IsaHc.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Protocol/DevicePath.h>
+#include <Protocol/ServiceBinding.h>
+
+typedef struct {
+  UINT32                          Signature;
+  EFI_SERVICE_BINDING_PROTOCOL    ServiceBinding;
+  EFI_ISA_HC_PROTOCOL             *IsaHc;       ///< ISA HC protocol produced 
by the ISA Host Controller driver
+  EFI_HANDLE                      IsaHcHandle;  ///< ISA HC handle created by 
the ISA Host Controller driver
+} ISA_BUS_PRIVATE_DATA;
+#define ISA_BUS_PRIVATE_DATA_SIGNATURE    SIGNATURE_32 ('_', 'i', 's', 'b')
+#define ISA_BUS_PRIVATE_DATA_FROM_THIS(a) CR (a, ISA_BUS_PRIVATE_DATA, 
ServiceBinding, ISA_BUS_PRIVATE_DATA_SIGNATURE)
+
+typedef struct {
+  UINT32                          Signature;
+  BOOLEAN                         InDestroying; ///< Flag to avoid 
DestroyChild() re-entry.
+} ISA_BUS_CHILD_PRIVATE_DATA;
+#define ISA_BUS_CHILD_PRIVATE_DATA_SIGNATURE    SIGNATURE_32 ('_', 'i', 's', 
'c')
+
+extern EFI_DRIVER_BINDING_PROTOCOL gIsaBusDriverBinding;
+
+#endif
diff --git a/Bus/Isa/IsaBusDxe/IsaBusDxe.inf b/Bus/Isa/IsaBusDxe/IsaBusDxe.inf
new file mode 100644
index 0000000..df3428b
--- /dev/null
+++ b/Bus/Isa/IsaBusDxe/IsaBusDxe.inf
@@ -0,0 +1,59 @@
+## @file
+#  ISA Bus driver to manage the child devices attached to the ISA Host 
Controller.
+#
+#  This driver follows UEFI driver model and layers on ISA HC protocol defined
+#  in PI spec 1.2.1. It consumes the ISA Host Controller protocol produced by
+#  the ISA Host Controller and installs the ISA Host Controller Service Binding
+#  protocol on the ISA Host Controller's handle.
+#
+#  Copyright (c) 2015, 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                      = IsaBusDxe
+  FILE_GUID                      = DCBE6D66-D928-4138-8041-358F35CBCF80
+  MODULE_TYPE                    = UEFI_DRIVER
+  VERSION_STRING                 = 1.0
+  ENTRY_POINT                    = InitializeIsaBus
+
+#
+# The following information is for reference only and not required by the 
build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#
+#  DRIVER_BINDING                =  gIsaBusDriverBinding
+#  COMPONENT_NAME                =  gIsaBusComponentName
+#  COMPONENT_NAME2               =  gIsaBusComponentName2
+#
+
+[Sources]
+  IsaBusDxe.h
+  IsaBusDxe.c
+  ComponentName.h
+  ComponentName.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  UefiDriverEntryPoint
+  UefiBootServicesTableLib
+  BaseLib
+  BaseMemoryLib
+  MemoryAllocationLib
+  UefiLib
+  DebugLib
+
+[Protocols]
+  gEfiIsaHcProtocolGuid
+  gEfiIsaHcServiceBindingProtocolGuid
diff --git a/MdeModulePkg.dsc b/MdeModulePkg.dsc
index d0832bc..032d1c7 100644
--- a/MdeModulePkg.dsc
+++ b/MdeModulePkg.dsc
@@ -231,6 +231,7 @@
   MdeModulePkg/Bus/I2c/I2cDxe/I2cBusDxe.inf
   MdeModulePkg/Bus/I2c/I2cDxe/I2cHostDxe.inf
   MdeModulePkg/Bus/I2c/I2cDxe/I2cDxe.inf
+  MdeModulePkg/Bus/Isa/IsaBusDxe/IsaBusDxe.inf
 
   MdeModulePkg/Core/Dxe/DxeMain.inf {
     <LibraryClasses>
-- 
1.9.5.msysgit.1


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