diff options
Diffstat (limited to 'ArmPlatformPkg/ArmJunoPkg/Drivers')
4 files changed, 0 insertions, 457 deletions
diff --git a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c index 0542a2003..7f9293151 100644 --- a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c +++ b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c @@ -83,9 +83,5 @@ ArmJunoEntryPoint ( return Status;
}
- // Try to install the Flat Device Tree (FDT). This function actually installs the
- // UEFI Driver Binding Protocol.
- Status = JunoFdtInstall (ImageHandle);
-
return Status;
}
diff --git a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.inf b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.inf index fd77a5d3f..d29703b20 100644 --- a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.inf +++ b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.inf @@ -20,7 +20,6 @@ [Sources.common]
ArmJunoDxe.c
- InstallFdt.c
PciEmulation.c
PciRootBridgeIo.c
@@ -39,7 +38,6 @@ DebugLib
DmaLib
DxeServicesTableLib
- FdtLib
IoLib
PcdLib
PrintLib
@@ -53,8 +51,6 @@ gArmGlobalVariableGuid
gEfiEndOfDxeEventGroupGuid
gEfiFileInfoGuid
- gFdtTableGuid
- gArmPlatformUpdateFdtEventGuid
[Protocols]
gEfiBlockIoProtocolGuid
diff --git a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxeInternal.h b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxeInternal.h index 5ebb5161f..a9f58dd00 100644 --- a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxeInternal.h +++ b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxeInternal.h @@ -28,9 +28,4 @@ PciEmulationEntryPoint ( VOID
);
-EFI_STATUS
-JunoFdtInstall (
- IN EFI_HANDLE ImageHandle
- );
-
#endif // __ARM_JUNO_DXE_INTERNAL_H__
diff --git a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/InstallFdt.c b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/InstallFdt.c deleted file mode 100644 index 337a4f079..000000000 --- a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/InstallFdt.c +++ /dev/null @@ -1,444 +0,0 @@ -/** @file
-*
-* Copyright (c) 2014-2015, ARM Limited. All rights reserved.
-*
-* 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 "ArmJunoDxeInternal.h"
-
-#include <Protocol/BlockIo.h>
-#include <Protocol/DevicePathFromText.h>
-#include <Protocol/DriverBinding.h>
-#include <Protocol/SimpleFileSystem.h>
-
-#include <Library/BaseMemoryLib.h>
-#include <Library/BdsLib.h>
-#include <Library/DevicePathLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/PrintLib.h>
-#include <Library/SerialPortLib.h>
-#include <Library/UefiRuntimeServicesTableLib.h>
-
-#include <Guid/ArmGlobalVariableHob.h>
-#include <Guid/ArmPlatformEvents.h>
-#include <Guid/EventGroup.h>
-#include <Guid/Fdt.h>
-#include <Guid/FileInfo.h>
-
-#include <libfdt.h>
-
-#define FDT_DEFAULT_FILENAME L"juno"
-
-#define IS_DEVICE_PATH_NODE(node,type,subtype) (((node)->Type == (type)) && ((node)->SubType == (subtype)))
-
-// Hardware Vendor Device Path node for the Juno NOR Flash. We use the Juno NOR Flash if the user
-// has not specified another filesystem location into the UEFI Variable 'Fdt'.
-// The Juno NOR Flash has its own filesystem format (supported by ArmPlatformPkg/FileSystem/BootMonFs).
-STATIC CONST struct {
- VENDOR_DEVICE_PATH NorGuid;
- EFI_DEVICE_PATH End;
-} mJunoNorFlashDevicePath = {
- {
- { HARDWARE_DEVICE_PATH, HW_VENDOR_DP, { sizeof (VENDOR_DEVICE_PATH), 0 } },
- {0xE7223039, 0x5836, 0x41E1, { 0xB5, 0x42, 0xD7, 0xEC, 0x73, 0x6C, 0x5E, 0x59} }
- },
- { END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE, { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 } }
-};
-
-STATIC EFI_DEVICE_PATH* mFdtFileSystemDevicePath = NULL;
-STATIC CHAR16* mFdtFileName = NULL;
-
-STATIC BOOLEAN mFdtTableInstalled = FALSE;
-
-/**
- See definition EFI_DRIVER_BINDING_PROTOCOL.Supported()
-**/
-EFI_STATUS
-EFIAPI
-JunoFdtSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *DriverBinding,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
- )
-{
- EFI_STATUS Status;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
-
- //
- // Check if the Handle support the Simple File System Protocol
- //
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEfiSimpleFileSystemProtocolGuid,
- NULL,
- gImageHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_TEST_PROTOCOL
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- // Check if a DevicePath is attached to the handle
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEfiDevicePathProtocolGuid,
- (VOID **)&DevicePath,
- gImageHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- // Check if the Device Path is the one from the NOR Flash
- if (CompareMem (mFdtFileSystemDevicePath, DevicePath, GetDevicePathSize (mFdtFileSystemDevicePath)) != 0) {
- return EFI_NOT_FOUND;
- }
-
- gBS->CloseProtocol (ControllerHandle, &gEfiDevicePathProtocolGuid, gImageHandle, ControllerHandle);
- return Status;
-}
-
-/**
- This function is used to print messages back to the user.
-
- We use the Serial terminal for these messages as the gST->ConOut might not be initialized at this stage.
-
- @param Message Message to display to the user
-**/
-STATIC
-VOID
-PrintMessage (
- IN CHAR8* Message,
- ...
- )
-{
- UINTN CharCount;
- CHAR8 Buffer[100];
- VA_LIST Marker;
-
- VA_START (Marker, Message);
- CharCount = AsciiVSPrint (Buffer, sizeof (Buffer), Message, Marker);
- VA_END (Marker);
-
- SerialPortWrite ((UINT8*)Buffer, CharCount);
-}
-
-/**
- See definition EFI_DRIVER_BINDING_PROTOCOL.Start ()
-**/
-EFI_STATUS
-EFIAPI
-JunoFdtStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *DriverBinding,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath OPTIONAL
- )
-{
- EFI_STATUS Status;
- EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *BootMonFs;
- EFI_FILE_PROTOCOL *Fs;
- EFI_FILE_PROTOCOL *File;
- UINTN Size;
- EFI_PHYSICAL_ADDRESS FdtBlob;
- EFI_FILE_INFO *FileInfo;
-
- if (mFdtTableInstalled) {
- return EFI_ALREADY_STARTED;
- }
-
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEfiSimpleFileSystemProtocolGuid,
- (VOID**)&BootMonFs,
- gImageHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- // Try to Open the volume and get root directory
- Status = BootMonFs->OpenVolume (BootMonFs, &Fs);
- if (EFI_ERROR (Status)) {
- PrintMessage ("Warning: Fail to open file system that should contain FDT file.\n");
- goto CLOSE_PROTOCOL;
- }
-
- File = NULL;
- Status = Fs->Open (Fs, &File, mFdtFileName, EFI_FILE_MODE_READ, 0);
- if (EFI_ERROR (Status)) {
- PrintMessage ("Warning: Fail to load FDT file '%s'.\n", mFdtFileName);
- goto CLOSE_PROTOCOL;
- }
-
- Size = 0;
- File->GetInfo (File, &gEfiFileInfoGuid, &Size, NULL);
- FileInfo = AllocatePool (Size);
- Status = File->GetInfo (File, &gEfiFileInfoGuid, &Size, FileInfo);
- if (EFI_ERROR (Status)) {
- goto CLOSE_FILE;
- }
-
- // Get the file size
- Size = FileInfo->FileSize;
- FreePool (FileInfo);
-
- // The FDT blob is attached to the Configuration Table. It is better to load it as Runtime Service Data
- // to prevent the kernel to overwrite its data
- Status = gBS->AllocatePages (AllocateAnyPages, EfiRuntimeServicesData, EFI_SIZE_TO_PAGES (Size), &FdtBlob);
- if (!EFI_ERROR (Status)) {
- Status = File->Read (File, &Size, (VOID*)(UINTN)(FdtBlob));
- if (EFI_ERROR (Status)) {
- gBS->FreePages (FdtBlob, EFI_SIZE_TO_PAGES (Size));
- } else {
- // Check the FDT header is valid. We only make this check in DEBUG mode in case the FDT header change on
- // production device and this ASSERT() becomes not valid.
- ASSERT (fdt_check_header ((VOID*)(UINTN)(FdtBlob)) == 0);
-
- // Ensure the Size of the Device Tree is smaller than the size of the read file
- ASSERT ((UINTN)fdt_totalsize ((VOID*)(UINTN)FdtBlob) <= Size);
-
- // Install the FDT into the Configuration Table
- Status = gBS->InstallConfigurationTable (&gFdtTableGuid, (VOID*)(UINTN)(FdtBlob));
- if (!EFI_ERROR (Status)) {
- mFdtTableInstalled = TRUE;
- }
- }
- }
-
-CLOSE_FILE:
- File->Close (File);
-
-CLOSE_PROTOCOL:
- // We do not need the FileSystem protocol
- gBS->CloseProtocol (
- ControllerHandle,
- &gEfiSimpleFileSystemProtocolGuid,
- gImageHandle,
- ControllerHandle);
-
- return Status;
-}
-
-/**
- See definition EFI_DRIVER_BINDING_PROTOCOL.Stop()
-**/
-EFI_STATUS
-EFIAPI
-JunoFdtStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *DriverBinding,
- IN EFI_HANDLE ControllerHandle,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
- )
-{
- UINTN Index;
- VOID* FdtBlob;
- UINTN FdtSize;
-
- // Look for FDT Table
- for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {
- // Check for correct GUID type
- if (CompareGuid (&gFdtTableGuid, &(gST->ConfigurationTable[Index].VendorGuid))) {
- FdtBlob = gST->ConfigurationTable[Index].VendorTable;
- FdtSize = (UINTN)fdt_totalsize (FdtBlob);
-
- // Uninstall the FDT Configuration Table
- gBS->InstallConfigurationTable (&gFdtTableGuid, NULL);
-
- // Free the memory
- gBS->FreePages ((EFI_PHYSICAL_ADDRESS)(UINTN)FdtBlob, EFI_SIZE_TO_PAGES (FdtSize));
-
- return EFI_SUCCESS;
- }
- }
-
- return EFI_NOT_FOUND;
-}
-
-//
-// Driver Binding Protocol for Juno FDT support
-//
-EFI_DRIVER_BINDING_PROTOCOL mJunoFdtBinding = {
- JunoFdtSupported,
- JunoFdtStart,
- JunoFdtStop,
- 0xa,
- NULL,
- NULL
-};
-
-/**
- Notification function of EFI_END_OF_DXE_EVENT_GROUP_GUID event group.
-
- This is a notification function registered on EFI_END_OF_DXE_EVENT_GROUP_GUID event group.
-
- @param Event Event whose notification function is being invoked.
- @param Context Pointer to the notification function's context.
-
-**/
-STATIC
-VOID
-EFIAPI
-LoadFdtOnEvent (
- EFI_EVENT Event,
- VOID *Context
- )
-{
- EFI_DEVICE_PATH *DevicePathNode;
- EFI_HANDLE Handle;
- EFI_STATUS Status;
- UINTN VariableSize;
- CHAR16* FdtDevicePathStr;
- EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL *EfiDevicePathFromTextProtocol;
- EFI_EVENT ArmPlatformUpdateFdtEvent;
-
- //
- // Read the 'FDT' UEFI Variable to know where we should we read the blob from.
- // The 'Fdt' variable contains either the full device path or only the filename of the FDT.
- // If 'Fdt' only contains the filename then we assume its location is on the NOR Flash.
- //
- VariableSize = 0;
- Status = gRT->GetVariable (L"Fdt", &gArmGlobalVariableGuid, NULL, &VariableSize, mFdtFileSystemDevicePath);
- if (Status == EFI_BUFFER_TOO_SMALL) {
- // Get the environment variable value
- mFdtFileSystemDevicePath = AllocatePool (VariableSize);
- if (mFdtFileSystemDevicePath != NULL) {
- Status = gRT->GetVariable (L"Fdt", &gArmGlobalVariableGuid, NULL, &VariableSize, mFdtFileSystemDevicePath);
- if (EFI_ERROR (Status)) {
- FreePool (mFdtFileSystemDevicePath);
- ASSERT_EFI_ERROR (Status);
- return;
- }
- } else {
- ASSERT_EFI_ERROR (EFI_OUT_OF_RESOURCES);
- return;
- }
- } else if (Status == EFI_NOT_FOUND) {
- // If the 'Fdt' variable does not exist then we get the FDT location from the PCD
- FdtDevicePathStr = (CHAR16*)PcdGetPtr (PcdFdtDevicePath);
-
- Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);
- if (EFI_ERROR (Status)) {
- ASSERT_EFI_ERROR (Status);
- return;
- }
-
- // Conversion of the Device Path string into EFI Device Path
- mFdtFileSystemDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath (FdtDevicePathStr);
- }
-
- if (mFdtFileSystemDevicePath != NULL) {
- // Look for the FDT filename that should be contained into the FilePath device path node
- DevicePathNode = mFdtFileSystemDevicePath;
- while (!IsDevicePathEnd (DevicePathNode)) {
- if (IS_DEVICE_PATH_NODE (DevicePathNode, MEDIA_DEVICE_PATH, MEDIA_FILEPATH_DP)) {
- // Extract the name from the File Path Node. The name of the Filename is the size of the
- // device path node minus the size of the device path node header.
- mFdtFileName = AllocateCopyPool (
- DevicePathNodeLength (DevicePathNode) - sizeof(EFI_DEVICE_PATH_PROTOCOL),
- ((FILEPATH_DEVICE_PATH*)DevicePathNode)->PathName);
- if (mFdtFileName == NULL) {
- ASSERT_EFI_ERROR (EFI_OUT_OF_RESOURCES);
- return;
- }
-
- // We remove the FilePath device path node from the FileSystem Device Path
- // because it will never match a device path installed by the FileSystem driver
- SetDevicePathEndNode (DevicePathNode);
- break;
- }
- DevicePathNode = NextDevicePathNode (DevicePathNode);
- }
-
- // The UEFI Variable might just contain the FDT filename. In this case we assume the FileSystem is
- // the NOR Flash based one (ie: BootMonFs).
- // If it was only containing the FilePath device node then the previous condition should have
- // replaced it by the End Device Path Node.
- if (IsDevicePathEndType (mFdtFileSystemDevicePath)) {
- mFdtFileSystemDevicePath = (EFI_DEVICE_PATH*)&mJunoNorFlashDevicePath;
- }
- } else {
- // Fallback on the NOR Flash filesystem
- mFdtFileSystemDevicePath = (EFI_DEVICE_PATH*)&mJunoNorFlashDevicePath;
- }
-
- // If the FDT FileName has been provided during the FileSystem identification
- if (mFdtFileName == NULL) {
- mFdtFileName = AllocateCopyPool (StrSize (FDT_DEFAULT_FILENAME), FDT_DEFAULT_FILENAME);
- if (mFdtFileName == NULL) {
- ASSERT_EFI_ERROR (Status);
- return;
- }
- }
-
- // Context is not NULL when this function is called for a gEfiEndOfDxeEventGroupGuid event
- if (Context) {
- // Install the Binding protocol to verify when the FileSystem that contains the FDT has been installed
- Status = gBS->InstallMultipleProtocolInterfaces (
- &gImageHandle,
- &gEfiDriverBindingProtocolGuid, &mJunoFdtBinding,
- NULL
- );
- if (EFI_ERROR (Status)) {
- ASSERT_EFI_ERROR (Status);
- return;
- }
-
- // Register the event triggered when the 'Fdt' variable is updated.
- Status = gBS->CreateEventEx (
- EVT_NOTIFY_SIGNAL,
- TPL_CALLBACK,
- LoadFdtOnEvent,
- NULL,
- &gArmPlatformUpdateFdtEventGuid,
- &ArmPlatformUpdateFdtEvent
- );
- ASSERT_EFI_ERROR (Status);
- }
-
- //
- // Force to connect the FileSystem that contains the FDT
- //
- BdsConnectDevicePath (mFdtFileSystemDevicePath, &Handle, NULL);
-}
-
-STATIC CONST BOOLEAN mIsEndOfDxeEvent = TRUE;
-
-EFI_STATUS
-JunoFdtInstall (
- IN EFI_HANDLE ImageHandle
- )
-{
- EFI_STATUS Status;
- EFI_EVENT EndOfDxeEvent;
-
- // Register the event handling function to set the End Of DXE flag.
- // We wait until the end of the DXE phase to load the FDT to make sure
- // all the required drivers (NOR Flash, UEFI Variable, BootMonFs) are dispatched
- Status = gBS->CreateEventEx (
- EVT_NOTIFY_SIGNAL,
- TPL_CALLBACK,
- LoadFdtOnEvent,
- &mIsEndOfDxeEvent,
- &gEfiEndOfDxeEventGroupGuid,
- &EndOfDxeEvent
- );
- ASSERT_EFI_ERROR (Status);
-
- return Status;
-}
|