mirror of https://github.com/acidanthera/audk.git
812 lines
20 KiB
C
812 lines
20 KiB
C
/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. 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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Module Name:
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ConPlatform.c
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Abstract:
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--*/
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#include "ConPlatform.h"
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EFI_DRIVER_BINDING_PROTOCOL gConPlatformTextInDriverBinding = {
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ConPlatformTextInDriverBindingSupported,
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ConPlatformTextInDriverBindingStart,
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ConPlatformDriverBindingStop,
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0x10,
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NULL,
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NULL
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};
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EFI_DRIVER_BINDING_PROTOCOL gConPlatformTextOutDriverBinding = {
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ConPlatformTextOutDriverBindingSupported,
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ConPlatformTextOutDriverBindingStart,
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ConPlatformDriverBindingStop,
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0x10,
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NULL,
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NULL
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};
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STATIC
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EFI_STATUS
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EFIAPI
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ConPlatformTextInDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Supported
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Arguments:
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(Standard DriverBinding Protocol Supported() function)
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Returns:
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None
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--*/
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{
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return ConPlatformDriverBindingSupported (
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This,
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ControllerHandle,
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RemainingDevicePath,
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&gEfiSimpleTextInProtocolGuid
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);
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}
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STATIC
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EFI_STATUS
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EFIAPI
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ConPlatformTextOutDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Supported
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Arguments:
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(Standard DriverBinding Protocol Supported() function)
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Returns:
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None
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--*/
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{
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return ConPlatformDriverBindingSupported (
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This,
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ControllerHandle,
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RemainingDevicePath,
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&gEfiSimpleTextOutProtocolGuid
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);
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}
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EFI_STATUS
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ConPlatformDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,
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IN EFI_GUID *ProtocolGuid
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)
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/*++
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Routine Description:
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Supported
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Arguments:
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(Standard DriverBinding Protocol Supported() function)
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Returns:
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None
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--*/
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{
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EFI_STATUS Status;
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VOID *Interface;
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//
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// Test to see if this is a physical device by checking to see if
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// it has a Device Path Protocol
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiDevicePathProtocolGuid,
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NULL,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_TEST_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Test to see if this device supports the Simple Text Output Protocol
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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ProtocolGuid,
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(VOID **) &Interface,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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gBS->CloseProtocol (
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ControllerHandle,
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ProtocolGuid,
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This->DriverBindingHandle,
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ControllerHandle
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);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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ConPlatformTextInDriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Arguments:
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(Standard DriverBinding Protocol Start() function)
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Returns:
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--*/
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{
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EFI_STATUS Status;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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EFI_SIMPLE_TEXT_IN_PROTOCOL *TextIn;
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//
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// Get the Device Path Protocol so the environment variables can be updated
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiDevicePathProtocolGuid,
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(VOID **) &DevicePath,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Open the Simple Input Protocol BY_DRIVER
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiSimpleTextInProtocolGuid,
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(VOID **) &TextIn,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Check the device handle, if it is a hot plug device,
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// do not put the device path into ConInDev, and install
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// gEfiConsoleInDeviceGuid to the device handle directly.
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// The policy is, make hot plug device plug in and play immediately.
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//
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if (IsHotPlugDevice (This->DriverBindingHandle, ControllerHandle)) {
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gBS->InstallMultipleProtocolInterfaces (
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&ControllerHandle,
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&gEfiConsoleInDeviceGuid,
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NULL,
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NULL
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);
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} else {
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//
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// Append the device path to the ConInDev environment variable
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//
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ConPlatformUpdateDeviceVariable (
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VarConsoleInpDev,
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DevicePath,
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APPEND
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);
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//
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// If the device path is an instance in the ConIn environment variable,
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// then install EfiConsoleInDeviceGuid onto ControllerHandle
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//
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Status = ConPlatformUpdateDeviceVariable (
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VarConsoleInp,
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DevicePath,
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CHECK
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);
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if (!EFI_ERROR (Status)) {
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gBS->InstallMultipleProtocolInterfaces (
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&ControllerHandle,
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&gEfiConsoleInDeviceGuid,
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NULL,
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NULL
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);
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} else {
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gBS->CloseProtocol (
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ControllerHandle,
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&gEfiSimpleTextInProtocolGuid,
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This->DriverBindingHandle,
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ControllerHandle
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);
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}
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}
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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ConPlatformTextOutDriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Arguments:
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(Standard DriverBinding Protocol Start() function)
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Returns:
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--*/
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{
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EFI_STATUS Status;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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EFI_SIMPLE_TEXT_OUT_PROTOCOL *TextOut;
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BOOLEAN NeedClose;
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NeedClose = TRUE;
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//
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// Get the Device Path Protocol so the environment variables can be updated
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiDevicePathProtocolGuid,
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(VOID **) &DevicePath,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Open the Simple Text Output Protocol BY_DRIVER
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiSimpleTextOutProtocolGuid,
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(VOID **) &TextOut,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Check the device handle, if it is a hot plug device,
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// do not put the device path into ConOutDev and StdErrDev,
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// and install gEfiConsoleOutDeviceGuid to the device handle directly.
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// The policy is, make hot plug device plug in and play immediately.
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//
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if (IsHotPlugDevice (This->DriverBindingHandle, ControllerHandle)) {
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gBS->InstallMultipleProtocolInterfaces (
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&ControllerHandle,
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&gEfiConsoleOutDeviceGuid,
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NULL,
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NULL
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);
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} else {
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//
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// Append the device path to the ConOutDev environment variable
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//
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ConPlatformUpdateDeviceVariable (
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VarConsoleOutDev,
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DevicePath,
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APPEND
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);
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//
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// Append the device path to the StdErrDev environment variable
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//
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ConPlatformUpdateDeviceVariable (
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VarErrorOutDev,
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DevicePath,
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APPEND
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);
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//
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// If the device path is an instance in the ConOut environment variable,
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// then install EfiConsoleOutDeviceGuid onto ControllerHandle
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//
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Status = ConPlatformUpdateDeviceVariable (
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VarConsoleOut,
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DevicePath,
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CHECK
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);
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if (!EFI_ERROR (Status)) {
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NeedClose = FALSE;
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Status = gBS->InstallMultipleProtocolInterfaces (
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&ControllerHandle,
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&gEfiConsoleOutDeviceGuid,
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NULL,
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NULL
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);
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}
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//
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// If the device path is an instance in the StdErr environment variable,
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// then install EfiStandardErrorDeviceGuid onto ControllerHandle
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//
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Status = ConPlatformUpdateDeviceVariable (
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VarErrorOut,
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DevicePath,
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CHECK
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);
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if (!EFI_ERROR (Status)) {
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NeedClose = FALSE;
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gBS->InstallMultipleProtocolInterfaces (
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&ControllerHandle,
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&gEfiStandardErrorDeviceGuid,
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NULL,
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NULL
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);
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}
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if (NeedClose) {
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gBS->CloseProtocol (
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ControllerHandle,
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&gEfiSimpleTextOutProtocolGuid,
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This->DriverBindingHandle,
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ControllerHandle
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);
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}
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}
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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ConPlatformDriverBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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)
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/*++
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Routine Description:
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Arguments:
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(Standard DriverBinding Protocol Stop() function)
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Returns:
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None
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--*/
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{
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EFI_STATUS Status;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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//
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// hot plug device is not included into the console associated variables,
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// so no need to check variable for those hot plug devices.
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//
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if (!IsHotPlugDevice (This->DriverBindingHandle, ControllerHandle)) {
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//
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// Get the Device Path Protocol so the environment variables can be updated
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiDevicePathProtocolGuid,
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(VOID **) &DevicePath,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (!EFI_ERROR (Status)) {
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//
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// Remove DevicePath from ConInDev, ConOutDev, and StdErrDev
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//
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ConPlatformUpdateDeviceVariable (
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VarConsoleInpDev,
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DevicePath,
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DELETE
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);
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ConPlatformUpdateDeviceVariable (
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VarConsoleOutDev,
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DevicePath,
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DELETE
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);
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ConPlatformUpdateDeviceVariable (
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VarErrorOutDev,
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DevicePath,
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DELETE
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);
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}
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}
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//
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// Uninstall the Console Device GUIDs from Controller Handle
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//
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ConPlatformUnInstallProtocol (
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This,
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ControllerHandle,
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&gEfiConsoleInDeviceGuid
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);
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ConPlatformUnInstallProtocol (
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This,
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ControllerHandle,
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&gEfiConsoleOutDeviceGuid
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);
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ConPlatformUnInstallProtocol (
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This,
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ControllerHandle,
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&gEfiStandardErrorDeviceGuid
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);
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//
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// Close the Simple Input and Simple Text Output Protocols
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//
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gBS->CloseProtocol (
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ControllerHandle,
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&gEfiSimpleTextInProtocolGuid,
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This->DriverBindingHandle,
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ControllerHandle
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);
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gBS->CloseProtocol (
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ControllerHandle,
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&gEfiSimpleTextOutProtocolGuid,
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This->DriverBindingHandle,
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ControllerHandle
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);
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return EFI_SUCCESS;
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}
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VOID
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ConPlatformUnInstallProtocol (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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IN EFI_GUID *ProtocolGuid
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)
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{
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EFI_STATUS Status;
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Status = gBS->OpenProtocol (
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Handle,
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ProtocolGuid,
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NULL,
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This->DriverBindingHandle,
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Handle,
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EFI_OPEN_PROTOCOL_TEST_PROTOCOL
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);
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if (!EFI_ERROR (Status)) {
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gBS->UninstallMultipleProtocolInterfaces (
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Handle,
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ProtocolGuid,
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NULL,
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NULL
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);
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}
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return ;
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}
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|
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VOID *
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ConPlatformGetVariable (
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IN CHAR16 *Name
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)
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/*++
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Routine Description:
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Read the EFI variable (Name) and return a dynamically allocated
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buffer, and the size of the buffer. On failure return NULL.
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Arguments:
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Name - String part of EFI variable name
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Returns:
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Dynamically allocated memory that contains a copy of the EFI variable.
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Caller is repsoncible freeing the buffer.
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NULL - Variable was not read
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--*/
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{
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EFI_STATUS Status;
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VOID *Buffer;
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UINTN BufferSize;
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BufferSize = 0;
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Buffer = NULL;
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//
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// Test to see if the variable exists. If it doesn't reuturn NULL
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//
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Status = gRT->GetVariable (
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Name,
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&gEfiGlobalVariableGuid,
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NULL,
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&BufferSize,
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Buffer
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);
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if (Status == EFI_BUFFER_TOO_SMALL) {
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//
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// Allocate the buffer to return
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//
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Status = gBS->AllocatePool (EfiBootServicesData, BufferSize, &Buffer);
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if (EFI_ERROR (Status)) {
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return NULL;
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}
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//
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// Read variable into the allocated buffer.
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//
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Status = gRT->GetVariable (
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Name,
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&gEfiGlobalVariableGuid,
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NULL,
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&BufferSize,
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Buffer
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);
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if (EFI_ERROR (Status)) {
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gBS->FreePool (Buffer);
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Buffer = NULL;
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}
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}
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return Buffer;
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}
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|
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EFI_STATUS
|
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ConPlatformMatchDevicePaths (
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IN EFI_DEVICE_PATH_PROTOCOL * Multi,
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|
IN EFI_DEVICE_PATH_PROTOCOL * Single,
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IN EFI_DEVICE_PATH_PROTOCOL **NewDevicePath OPTIONAL,
|
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IN BOOLEAN Delete
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)
|
|
/*++
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|
|
|
Routine Description:
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Function compares a device path data structure to that of all the nodes of a
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second device path instance.
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|
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Arguments:
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Multi - A pointer to a multi-instance device path data structure.
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Single - A pointer to a single-instance device path data structure.
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NewDevicePath - If Delete is TRUE, this parameter must not be null, and it
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points to the remaining device path data structure.
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(remaining device path = Multi - Single.)
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Delete - If TRUE, means removing Single from Multi.
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If FALSE, the routine just check whether Single matches
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with any instance in Multi.
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Returns:
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The function returns EFI_SUCCESS if the Single is contained within Multi.
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Otherwise, EFI_NOT_FOUND is returned.
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|
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--*/
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|
{
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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EFI_DEVICE_PATH_PROTOCOL *TempDevicePath1;
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EFI_DEVICE_PATH_PROTOCOL *TempDevicePath2;
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EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;
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UINTN Size;
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|
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//
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// The passed in DevicePath should not be NULL
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//
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if ((!Multi) || (!Single)) {
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return EFI_NOT_FOUND;
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|
}
|
|
//
|
|
// if performing Delete operation, the NewDevicePath must not be NULL.
|
|
//
|
|
TempDevicePath1 = NULL;
|
|
|
|
DevicePath = Multi;
|
|
DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);
|
|
|
|
//
|
|
// search for the match of 'Single' in 'Multi'
|
|
//
|
|
while (DevicePathInst) {
|
|
if (CompareMem (Single, DevicePathInst, Size) == 0) {
|
|
if (!Delete) {
|
|
gBS->FreePool (DevicePathInst);
|
|
return EFI_SUCCESS;
|
|
}
|
|
} else {
|
|
if (Delete) {
|
|
TempDevicePath2 = AppendDevicePathInstance (
|
|
TempDevicePath1,
|
|
DevicePathInst
|
|
);
|
|
gBS->FreePool (TempDevicePath1);
|
|
TempDevicePath1 = TempDevicePath2;
|
|
}
|
|
}
|
|
|
|
gBS->FreePool (DevicePathInst);
|
|
DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);
|
|
}
|
|
|
|
if (Delete) {
|
|
*NewDevicePath = TempDevicePath1;
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
EFI_STATUS
|
|
ConPlatformUpdateDeviceVariable (
|
|
IN CHAR16 *VariableName,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
|
IN CONPLATFORM_VAR_OPERATION Operation
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
|
|
Arguments:
|
|
|
|
Returns:
|
|
|
|
None
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_DEVICE_PATH_PROTOCOL *VariableDevicePath;
|
|
EFI_DEVICE_PATH_PROTOCOL *NewVariableDevicePath;
|
|
|
|
VariableDevicePath = NULL;
|
|
NewVariableDevicePath = NULL;
|
|
|
|
//
|
|
// Get Variable according to variable name.
|
|
// The memory for Variable is allocated within ConPlatformGetVarible(),
|
|
// it is the caller's responsibility to free the memory before return.
|
|
//
|
|
VariableDevicePath = ConPlatformGetVariable (VariableName);
|
|
|
|
if (Operation != DELETE) {
|
|
|
|
Status = ConPlatformMatchDevicePaths (
|
|
VariableDevicePath,
|
|
DevicePath,
|
|
NULL,
|
|
FALSE
|
|
);
|
|
|
|
if ((Operation == CHECK) || (!EFI_ERROR (Status))) {
|
|
//
|
|
// The device path is already in the variable
|
|
//
|
|
gBS->FreePool (VariableDevicePath);
|
|
|
|
return Status;
|
|
}
|
|
//
|
|
// The device path is not in variable. Append DevicePath to the
|
|
// environment variable that is a multi-instance device path.
|
|
//
|
|
Status = EFI_SUCCESS;
|
|
NewVariableDevicePath = AppendDevicePathInstance (
|
|
VariableDevicePath,
|
|
DevicePath
|
|
);
|
|
if (NewVariableDevicePath == NULL) {
|
|
Status = EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
} else {
|
|
//
|
|
// Remove DevicePath from the environment variable that
|
|
// is a multi-instance device path.
|
|
//
|
|
Status = ConPlatformMatchDevicePaths (
|
|
VariableDevicePath,
|
|
DevicePath,
|
|
&NewVariableDevicePath,
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
gBS->FreePool (VariableDevicePath);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
Status = gRT->SetVariable (
|
|
VariableName,
|
|
&gEfiGlobalVariableGuid,
|
|
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
|
|
GetDevicePathSize (NewVariableDevicePath),
|
|
NewVariableDevicePath
|
|
);
|
|
|
|
gBS->FreePool (NewVariableDevicePath);
|
|
|
|
return Status;
|
|
}
|
|
|
|
BOOLEAN
|
|
IsHotPlugDevice (
|
|
EFI_HANDLE DriverBindingHandle,
|
|
EFI_HANDLE ControllerHandle
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
//
|
|
// HotPlugDeviceGuid indicates ControllerHandle stands for a hot plug device.
|
|
//
|
|
Status = gBS->OpenProtocol (
|
|
ControllerHandle,
|
|
&gEfiHotPlugDeviceGuid,
|
|
NULL,
|
|
DriverBindingHandle,
|
|
ControllerHandle,
|
|
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|