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Code Clean for Driver PlatformDriOverrideDxe and PlatOverMngr application. And Clean PlatDriOver library class.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7121 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4
2008-12-25 09:13:53 +00:00
parent 97404058f1
commit 68dbca6c14
18 changed files with 594 additions and 933 deletions
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201
MdeModulePkg/Library/DxePlatDriOverLib/PlatDriOverLib.c
View File

@ -16,69 +16,6 @@
LIST_ENTRY mDevicePathStack = INITIALIZE_LIST_HEAD_VARIABLE (mDevicePathStack);
/**
Installs the Platform Driver Override Protocol.
This function installs the Platform Driver Override Protocol, and ensure there is only one
Platform Driver Override Protocol in the system.
@param gPlatformDriverOverride PlatformDriverOverride protocol interface which
needs to be installed
@retval EFI_SUCCESS The protocol is installed successfully.
@retval EFI_ALREADY_STARTED There has been a Platform Driver Override
Protocol in the system, cannot install it again.
**/
EFI_STATUS
EFIAPI
InstallPlatformDriverOverrideProtocol (
EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *gPlatformDriverOverride
)
{
EFI_HANDLE Handle;
EFI_STATUS Status;
UINTN HandleCount;
EFI_HANDLE *HandleBuffer;
//
// According to UEFI spec, there can be at most a single instance
// in the system of the EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL.
// So here we check the existence.
//
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiPlatformDriverOverrideProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
//
// If there was no error, assume there is an installation and return error
//
if (!EFI_ERROR (Status)) {
if (HandleBuffer != NULL) {
FreePool (HandleBuffer);
}
return EFI_ALREADY_STARTED;
}
//
// Install platform driver override protocol
//
Handle = NULL;
Status = gBS->InstallProtocolInterface (
&Handle,
&gEfiPlatformDriverOverrideProtocolGuid,
EFI_NATIVE_INTERFACE,
gPlatformDriverOverride
);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}
/**
Free all the mapping database memory resource and initialize the mapping list entry.
@ -154,7 +91,7 @@ FreeMappingDatabase (
// large mapping infos.
// The variable(s) name rule is PlatDriOver, PlatDriOver1, PlatDriOver2, ....
//
UINT32 NotEnd;
UINT32 NotEnd; //Zero is the last one.
//
// The entry which contains the mapping that Controller Device Path to a set of Driver Device Paths
// There are often multi mapping entries in a variable.
@ -166,6 +103,7 @@ FreeMappingDatabase (
EFI_DEVICE_PATH_PROTOCOL DriverDevicePath[];
EFI_DEVICE_PATH_PROTOCOL DriverDevicePath[];
......
UINT32 NotEnd; //Zero is the last one.
UINT32 SIGNATURE;
UINT32 DriverNum;
EFI_DEVICE_PATH_PROTOCOL ControllerDevicePath[];
@ -224,6 +162,9 @@ InitOverridesMapping (
Corrupted = FALSE;
do {
VariableIndex = VariableBuffer;
//
// End flag
//
NotEnd = *(UINT32*) VariableIndex;
//
// Traverse the entries containing the mapping that Controller Device Path
@ -363,6 +304,69 @@ GetOneItemNeededSize (
return NeededSize;
}
/**
Deletes all environment variable(s) that contain the override mappings from Controller Device Path to
a set of Driver Device Paths.
@retval EFI_SUCCESS Delete all variable(s) successfully.
**/
EFI_STATUS
EFIAPI
DeleteOverridesVariables (
VOID
)
{
EFI_STATUS Status;
VOID *VariableBuffer;
UINTN VariableNum;
UINTN BufferSize;
UINTN Index;
CHAR16 OverrideVariableName[40];
//
// Get environment variable(s) number
//
VariableNum = 0;
VariableBuffer = GetVariableAndSize (L"PlatDriOver", &gEfiOverrideVariableGuid, &BufferSize);
VariableNum++;
if (VariableBuffer == NULL) {
return EFI_NOT_FOUND;
}
//
// Check NotEnd to get all PlatDriOverX variable(s)
//
while ((*(UINT32*)VariableBuffer) != 0) {
UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver%d", VariableNum);
VariableBuffer = GetVariableAndSize (OverrideVariableName, &gEfiOverrideVariableGuid, &BufferSize);
VariableNum++;
ASSERT (VariableBuffer != NULL);
}
//
// Delete PlatDriOver and all additional variables, if exist.
//
Status = gRT->SetVariable (
L"PlatDriOver",
&gEfiOverrideVariableGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
0,
NULL
);
ASSERT (!EFI_ERROR (Status));
for (Index = 1; Index < VariableNum; Index++) {
UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver%d", Index);
Status = gRT->SetVariable (
OverrideVariableName,
&gEfiOverrideVariableGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
0,
NULL
);
ASSERT (!EFI_ERROR (Status));
}
return EFI_SUCCESS;
}
/**
@ -627,8 +631,6 @@ GetCurrentTpl (
Retrieves the image handle of the platform override driver for a controller in
the system from the memory mapping database.
@param This A pointer to the
EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL instance.
@param ControllerHandle The device handle of the controller to check if
a driver override exists.
@param DriverImageHandle On input, the previously returnd driver image handle.
@ -653,7 +655,6 @@ GetCurrentTpl (
EFI_STATUS
EFIAPI
GetDriverFromMapping (
IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN OUT EFI_HANDLE *DriverImageHandle,
IN LIST_ENTRY *MappingDataBase,
@ -1365,72 +1366,6 @@ DeleteDriverImage (
return EFI_SUCCESS;
}
/**
Deletes all environment variable(s) that contain the override mappings from Controller Device Path to
a set of Driver Device Paths.
@retval EFI_SUCCESS Delete all variable(s) successfully.
**/
EFI_STATUS
EFIAPI
DeleteOverridesVariables (
VOID
)
{
EFI_STATUS Status;
VOID *VariableBuffer;
UINTN VariableNum;
UINTN BufferSize;
UINTN Index;
CHAR16 OverrideVariableName[40];
//
// Get environment variable(s) number
//
VariableNum = 0;
VariableBuffer = GetVariableAndSize (L"PlatDriOver", &gEfiOverrideVariableGuid, &BufferSize);
VariableNum++;
if (VariableBuffer == NULL) {
return EFI_NOT_FOUND;
}
//
// Check NotEnd to get all PlatDriOverX variable(s)
//
while ((*(UINT32*)VariableBuffer) != 0) {
UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver%d", VariableNum);
VariableBuffer = GetVariableAndSize (OverrideVariableName, &gEfiOverrideVariableGuid, &BufferSize);
VariableNum++;
ASSERT (VariableBuffer != NULL);
}
//
// Delete PlatDriOver and all additional variables, if exist.
//
Status = gRT->SetVariable (
L"PlatDriOver",
&gEfiOverrideVariableGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
0,
NULL
);
ASSERT (!EFI_ERROR (Status));
for (Index = 1; Index < VariableNum; Index++) {
UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver%d", Index);
Status = gRT->SetVariable (
OverrideVariableName,
&gEfiOverrideVariableGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
0,
NULL
);
ASSERT (!EFI_ERROR (Status));
}
return EFI_SUCCESS;
}
/**
Push a controller device path into a globle device path list.