/** @file
Driver Binding functions implementationfor for UefiPxeBc Driver.
Copyright (c) 2007 - 2011, 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
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 "PxeBcImpl.h"
0xa,
NULL,
};
/**
Get the Nic handle using any child handle in the IPv4 stack.
@param[in] ControllerHandle Pointer to child handle over IPv4.
@return NicHandle The pointer to the Nic handle.
**/
)
{
return NULL;
}
}
}
}
}
return NicHandle;
}
/**
Get the Nic handle using any child handle in the IPv6 stack.
@param[in] ControllerHandle Pointer to child handle over IPv6.
@return NicHandle The pointer to the Nic handle.
**/
)
{
return NULL;
}
}
}
}
return NicHandle;
}
/**
Destroy the opened instances based on IPv4.
@param[in] This Pointer to the EFI_DRIVER_BINDING_PROTOCOL.
@param[in] Private Pointer to PXEBC_PRIVATE_DATA.
**/
)
{
//
// Close Arp for PxeBc->Arp and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Ip4 for background ICMP error message and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Udp4 for PxeBc->UdpWrite and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Udp4 for PxeBc->UdpRead and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Mtftp4 for PxeBc->Mtftp4 and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Dhcp4 for PxeBc->Dhcp4 and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close PxeBcPrivate from the parent Nic handle and destroy the virtual handle.
//
gBS->CloseProtocol (
);
);
//
// Close SNP from the child virtual handle
//
gBS->CloseProtocol (
);
);
}
}
}
/**
Destroy the opened instances based on IPv6.
@param[in] This Pointer to the EFI_DRIVER_BINDING_PROTOCOL.
@param[in] Private Pointer to PXEBC_PRIVATE_DATA.
**/
)
{
//
// Close Ip6 for Ip6->Ip6Config and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Udp6 for PxeBc->UdpWrite and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Udp6 for PxeBc->UdpRead and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Mtftp6 for PxeBc->Mtftp and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close Dhcp6 for PxeBc->Dhcp and destroy the instance.
//
gBS->CloseProtocol (
);
);
}
//
// Close PxeBcPrivate from the parent Nic handle and destroy the virtual handle.
//
gBS->CloseProtocol (
);
);
//
// Close SNP from the child virtual handle
//
gBS->CloseProtocol (
);
);
}
}
}
/**
Create the opened instances based on IPv4.
@param[in] This Pointer to EFI_DRIVER_BINDING_PROTOCOL.
@param[in] ControllerHandle Handle of the child to destroy.
@param[in] Private Handle Pointer to PXEBC_PRIVATE_DATA.
@retval EFI_SUCCESS The instances based on IPv4 were all created successfully.
@retval Others An unexpected error occurred.
**/
)
{
//
// Already created before.
//
return EFI_SUCCESS;
}
//
// Create Dhcp4 child and open Dhcp4 protocol for PxeBc->Dhcp.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Mtftp4 child and open Mtftp4 protocol for PxeBc->Mtftp.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Udp4 child and open Udp4 protocol for PxeBc->UdpRead.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Udp4 child and open Udp4 protocol for PxeBc->UdpWrite.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Arp child and open Arp protocol for PxeBc->Arp.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Ip4 child and open Ip4 protocol for background ICMP packets.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Get max packet size from Ip4 to calculate block size for Tftp later.
//
goto ON_ERROR;
}
return EFI_OUT_OF_RESOURCES;
}
//
// Create a device path node for Ipv4 virtual nic, and append it.
//
goto ON_ERROR;
}
CopyMem (
sizeof (EFI_LOAD_FILE_PROTOCOL)
);
//
// Create a new handle for IPv4 virtual nic,
// and install PxeBaseCode, LoadFile and DevicePath protocols.
//
);
goto ON_ERROR;
}
//
// Install SNP protocol on purpose is for some OS loader backward
// compatibility consideration.
//
);
goto ON_ERROR;
}
//
// Open SNP on the child handle BY_DRIVER. It will prevent any additionally
// layering to perform the experiment.
//
);
goto ON_ERROR;
}
}
//
// Open PxeBaseCodePrivate protocol by child to setup a parent-child relationship between
// real NIC handle and the virtual IPv4 NIC handle.
//
);
goto ON_ERROR;
}
//
// Set default configure data for Udp4Read and Ip4 instance.
//
return EFI_SUCCESS;
return Status;
}
/**
Create the opened instances based on IPv6.
@param[in] This Pointer to EFI_DRIVER_BINDING_PROTOCOL.
@param[in] ControllerHandle Handle of the child to destroy.
@param[in] Private Handle Pointer to PXEBC_PRIVATE_DATA.
@retval EFI_SUCCESS The instances based on IPv6 were all created successfully.
@retval Others An unexpected error occurred.
**/
)
{
//
// Already created before.
//
return EFI_SUCCESS;
}
return EFI_OUT_OF_RESOURCES;
}
//
// Create Dhcp6 child and open Dhcp6 protocol for PxeBc->Dhcp.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Mtftp6 child and open Mtftp6 protocol for PxeBc->Mtftp.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Udp6 child and open Udp6 protocol for PxeBc->UdpRead.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Udp6 child and open Udp6 protocol for PxeBc->UdpWrite.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Create Ip6 child and open Ip6 protocol for background ICMP6 packets.
//
);
goto ON_ERROR;
}
);
goto ON_ERROR;
}
//
// Get max packet size from Ip6 to calculate block size for Tftp later.
//
goto ON_ERROR;
}
//
// Locate Ip6->Ip6Config and store it for set IPv6 address.
//
);
goto ON_ERROR;
}
//
// Create a device path node for Ipv6 virtual nic, and append it.
//
goto ON_ERROR;
}
CopyMem (
sizeof (EFI_LOAD_FILE_PROTOCOL)
);
//
// Create a new handle for IPv6 virtual nic,
// and install PxeBaseCode, LoadFile and DevicePath protocols.
//
);
goto ON_ERROR;
}
//
// Install SNP protocol on purpose is for some OS loader backward
// compatibility consideration.
//
);
goto ON_ERROR;
}
//
// Open SNP on the child handle BY_DRIVER. It will prevent any additionally
// layering to perform the experiment.
//
);
goto ON_ERROR;
}
}
//
// Open PxeBaseCodePrivate protocol by child to setup a parent-child relationship between
// real NIC handle and the virtual IPv6 NIC handle.
//
);
goto ON_ERROR;
}
//
// Set IPv6 avaiable flag and set default configure data for
// Udp6Read and Ip6 instance.
//
return EFI_SUCCESS;
return Status;
}
/**
The entry point for UefiPxeBc driver that installs the driver
binding and component name protocol on its image.
@param[in] ImageHandle The Image handle of the driver.
@param[in] SystemTable The system table.
@return EFI_SUCCESS
@return Others
**/
)
{
);
}
/**
Test to see if this driver supports ControllerHandle. This service
is called by the EFI boot service ConnectController(). In
order to make drivers as small as possible, there are a few calling
restrictions for this service. ConnectController() must
follow these calling restrictions. If any other agent wishes to call
Supported() it must also follow these calling restrictions.
@param[in] This The pointer to the driver binding protocol.
@param[in] ControllerHandle The handle of device to be tested.
@param[in] RemainingDevicePath Optional parameter used to pick a specific child
device to be started.
@retval EFI_SUCCESS This driver supports this device.
@retval EFI_UNSUPPORTED This driver does not support this device.
**/
)
{
//
// Try to open the Mtftp4 and Dhcp4 protocol to test whether IPv4 stack is ready.
//
NULL,
);
NULL,
);
}
//
// Try to open the Mtftp6 and Dhcp6 protocol to test whether IPv4 stack is ready.
//
NULL,
);
NULL,
);
}
//
// It's unsupported case if both stack are not ready.
//
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}
/**
Start this driver on ControllerHandle. This service is called by the
EFI boot service ConnectController(). In order to make
drivers as small as possible, there are a few calling restrictions for
this service. ConnectController() must follow these
calling restrictions. If any other agent wishes to call Start() it
must also follow these calling restrictions.
@param[in] This The pointer to the driver binding protocol.
@param[in] ControllerHandle The handle of device to be started.
@param[in] RemainingDevicePath Optional parameter used to pick a specific child
device to be started.
@retval EFI_SUCCESS This driver is installed to ControllerHandle.
@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle.
@retval other This driver does not support this device.
**/
)
{
);
//
// Skip the initialization if the driver has been started already.
//
} else {
//
// If the driver has not been started yet, it should do initialization.
//
return EFI_OUT_OF_RESOURCES;
}
CopyMem (
sizeof (EFI_PXE_BASE_CODE_PROTOCOL)
);
//
// Open device path to prepare for appending virtual NIC node.
//
);
goto ON_ERROR;
}
//
// Get the NII interface if it exists, it's not required.
//
);
}
//
// Install PxeBaseCodePrivate protocol onto the real NIC handler.
// PxeBaseCodePrivate protocol is only used to keep the relationship between
// NIC handle and virtual child handles.
// gEfiCallerIdGuid will be used as its protocol guid.
//
);
goto ON_ERROR;
}
//
// Try to locate SNP protocol.
//
}
//
// Try to create virtual NIC handle for IPv4.
//
//
// Try to create virtual NIC handle for IPv6.
//
//
// Failed to start PXE driver if IPv4 and IPv6 stack are both not available.
//
goto ON_ERROR;
}
return EFI_SUCCESS;
);
return Status;
}
/**
Stop this driver on ControllerHandle. This service is called by the
EFI boot service DisconnectController(). In order to
make drivers as small as possible, there are a few calling
restrictions for this service. DisconnectController()
must follow these calling restrictions. If any other agent wishes
to call Stop() it must also follow these calling restrictions.
@param[in] This Protocol instance pointer.
@param[in] ControllerHandle Handle of device to stop driver on.
@param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
children is zero stop the entire bus driver.
@param[in] ChildHandleBuffer List of Child Handles to Stop.
@retval EFI_SUCCESS This driver was removed ControllerHandle.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
@retval Others This driver was not removed from this device
**/
)
{
VirtualNic = NULL;
);
//
// Get the Nic handle by any pass-over service child handle.
//
return EFI_DEVICE_ERROR;
} else {
}
}
//
// Try to retrieve the private data by PxeBcPrivate protocol.
//
);
return Status;
}
} else {
//
// It's a virtual handle with LoadFileProtocol.
//
);
return Status;
}
}
}
//
// Stop functionality of PXE Base Code protocol
//
return Status;
}
}
}
);
}
return EFI_SUCCESS;
}