sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MdeModulePkg: Add UefiBootManagerLib

Browse Source 
UefiBootManagerLib provides:
 load option library functions;
 hot key library functions;
 boot library functions;
 connect and disconnect library functions;
 driver health library functions.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17327 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ruiyu Ni
2015-05-06 04:47:02 +00:00
committed by niruiyu
parent 58183d391c
commit 1d11222925
14 changed files with 8018 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

318
MdeModulePkg/Library/UefiBootManagerLib/BmConnect.c Normal file
View File

@ -0,0 +1,318 @@
/** @file
Library functions which relate with connecting the device.
Copyright (c) 2011 - 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 "InternalBm.h"
/**
Connect all the drivers to all the controllers.
This function makes sure all the current system drivers manage the correspoinding
controllers if have. And at the same time, makes sure all the system controllers
have driver to manage it if have.
**/
VOID
BmConnectAllDriversToAllControllers (
VOID
)
{
EFI_STATUS Status;
UINTN HandleCount;
EFI_HANDLE *HandleBuffer;
UINTN Index;
do {
//
// Connect All EFI 1.10 drivers following EFI 1.10 algorithm
//
gBS->LocateHandleBuffer (
AllHandles,
NULL,
NULL,
&HandleCount,
&HandleBuffer
);
for (Index = 0; Index < HandleCount; Index++) {
gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);
}
if (HandleBuffer != NULL) {
FreePool (HandleBuffer);
}
//
// Check to see if it's possible to dispatch an more DXE drivers.
// The above code may have made new DXE drivers show up.
// If any new driver is dispatched (Status == EFI_SUCCESS) and we will try
// the connect again.
//
Status = gDS->Dispatch ();
} while (!EFI_ERROR (Status));
}
/**
This function will connect all the system driver to controller
first, and then special connect the default console, this make
sure all the system controller available and the platform default
console connected.
**/
VOID
EFIAPI
EfiBootManagerConnectAll (
VOID
)
{
//
// Connect the platform console first
//
EfiBootManagerConnectAllDefaultConsoles ();
//
// Generic way to connect all the drivers
//
BmConnectAllDriversToAllControllers ();
//
// Here we have the assumption that we have already had
// platform default console
//
EfiBootManagerConnectAllDefaultConsoles ();
}
/**
This function will create all handles associate with every device
path node. If the handle associate with one device path node can not
be created successfully, then still give chance to do the dispatch,
which load the missing drivers if possible.
@param DevicePathToConnect The device path which will be connected, it can be
a multi-instance device path
@param MatchingHandle Return the controller handle closest to the DevicePathToConnect
@retval EFI_SUCCESS All handles associate with every device path node
have been created
@retval EFI_OUT_OF_RESOURCES There is no resource to create new handles
@retval EFI_NOT_FOUND Create the handle associate with one device path
node failed
**/
EFI_STATUS
EFIAPI
EfiBootManagerConnectDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePathToConnect,
OUT EFI_HANDLE *MatchingHandle OPTIONAL
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;
EFI_HANDLE Handle;
EFI_HANDLE PreviousHandle;
EFI_TPL CurrentTpl;
if (DevicePathToConnect == NULL) {
return EFI_INVALID_PARAMETER;
}
CurrentTpl = EfiGetCurrentTpl ();
//
// Start the real work of connect with RemainingDevicePath
//
PreviousHandle = NULL;
do {
//
// Find the handle that best matches the Device Path. If it is only a
// partial match the remaining part of the device path is returned in
// RemainingDevicePath.
//
RemainingDevicePath = DevicePathToConnect;
Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingDevicePath, &Handle);
if (!EFI_ERROR (Status)) {
if (Handle == PreviousHandle) {
//
// If no forward progress is made try invoking the Dispatcher.
// A new FV may have been added to the system an new drivers
// may now be found.
// Status == EFI_SUCCESS means a driver was dispatched
// Status == EFI_NOT_FOUND means no new drivers were dispatched
//
if (CurrentTpl == TPL_APPLICATION) {
Status = gDS->Dispatch ();
} else {
//
// Always return EFI_NOT_FOUND here
// to prevent dead loop when control handle is found but connection failded case
//
Status = EFI_NOT_FOUND;
}
}
if (!EFI_ERROR (Status)) {
PreviousHandle = Handle;
//
// Connect all drivers that apply to Handle and RemainingDevicePath,
// the Recursive flag is FALSE so only one level will be expanded.
//
// Do not check the connect status here, if the connect controller fail,
// then still give the chance to do dispatch, because partial
// RemainingDevicepath may be in the new FV
//
// 1. If the connect fail, RemainingDevicepath and handle will not
// change, so next time will do the dispatch, then dispatch's status
// will take effect
// 2. If the connect success, the RemainingDevicepath and handle will
// change, then avoid the dispatch, we have chance to continue the
// next connection
//
gBS->ConnectController (Handle, NULL, RemainingDevicePath, FALSE);
if (MatchingHandle != NULL) {
*MatchingHandle = Handle;
}
}
}
//
// Loop until RemainingDevicePath is an empty device path
//
} while (!EFI_ERROR (Status) && !IsDevicePathEnd (RemainingDevicePath));
ASSERT (EFI_ERROR (Status) || IsDevicePathEnd (RemainingDevicePath));
return Status;
}
/**
This function will disconnect all current system handles.
gBS->DisconnectController() is invoked for each handle exists in system handle buffer.
If handle is a bus type handle, all childrens also are disconnected recursively by
gBS->DisconnectController().
**/
VOID
EFIAPI
EfiBootManagerDisconnectAll (
VOID
)
{
UINTN HandleCount;
EFI_HANDLE *HandleBuffer;
UINTN Index;
//
// Disconnect all
//
gBS->LocateHandleBuffer (
AllHandles,
NULL,
NULL,
&HandleCount,
&HandleBuffer
);
for (Index = 0; Index < HandleCount; Index++) {
gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);
}
if (HandleBuffer != NULL) {
FreePool (HandleBuffer);
}
}
/**
Connect the specific Usb device which match the short form device path,
and whose bus is determined by Host Controller (Uhci or Ehci).
@param DevicePath A short-form device path that starts with the first
element being a USB WWID or a USB Class device
path
@return EFI_INVALID_PARAMETER DevicePath is NULL pointer.
DevicePath is not a USB device path.
@return EFI_SUCCESS Success to connect USB device
@return EFI_NOT_FOUND Fail to find handle for USB controller to connect.
**/
EFI_STATUS
BmConnectUsbShortFormDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
{
EFI_STATUS Status;
EFI_HANDLE *Handles;
UINTN HandleCount;
UINTN Index;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT8 Class[3];
BOOLEAN AtLeastOneConnected;
//
// Check the passed in parameters
//
if (DevicePath == NULL) {
return EFI_INVALID_PARAMETER;
}
if ((DevicePathType (DevicePath) != MESSAGING_DEVICE_PATH) ||
((DevicePathSubType (DevicePath) != MSG_USB_CLASS_DP) && (DevicePathSubType (DevicePath) != MSG_USB_WWID_DP))
) {
return EFI_INVALID_PARAMETER;
}
//
// Find the usb host controller firstly, then connect with the remaining device path
//
AtLeastOneConnected = FALSE;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiPciIoProtocolGuid,
NULL,
&HandleCount,
&Handles
);
if (!EFI_ERROR (Status)) {
for (Index = 0; Index < HandleCount; Index++) {
Status = gBS->HandleProtocol (
Handles[Index],
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo
);
if (!EFI_ERROR (Status)) {
//
// Check whether the Pci device is the wanted usb host controller
//
Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint8, 0x09, 3, &Class);
if (!EFI_ERROR (Status) &&
((PCI_CLASS_SERIAL == Class[2]) && (PCI_CLASS_SERIAL_USB == Class[1]))
) {
Status = gBS->ConnectController (
Handles[Index],
NULL,
DevicePath,
FALSE
);
if (!EFI_ERROR(Status)) {
AtLeastOneConnected = TRUE;
}
}
}
}
if (Handles != NULL) {
FreePool (Handles);
}
}
return AtLeastOneConnected ? EFI_SUCCESS : EFI_NOT_FOUND;
}