documentation on UGA for details on how to write a UGA driver that is able\r
to function both in the EFI pre-boot environment and from the OS runtime.\r
\r
- Copyright (c) 2006, Intel Corporation\r
+ Copyright (c) 2006 - 2009, Intel Corporation\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
EFI_STATUS Status;\r
EFI_PCI_IO_PROTOCOL *PciIo;\r
PCI_TYPE00 Pci;\r
+ EFI_DEV_PATH *Node;\r
\r
//\r
// Open the PCI I/O Protocol\r
//\r
// See if this is a 5430 or a 5446 PCI controller\r
//\r
- if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5430_DEVICE_ID) {\r
- Status = EFI_SUCCESS;\r
- }\r
-\r
- if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5430_ALTERNATE_DEVICE_ID) {\r
- Status = EFI_SUCCESS;\r
- }\r
-\r
- if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5446_DEVICE_ID) {\r
+ if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5430_DEVICE_ID || \r
+ Pci.Hdr.DeviceId == CIRRUS_LOGIC_5430_ALTERNATE_DEVICE_ID ||\r
+ Pci.Hdr.DeviceId == CIRRUS_LOGIC_5446_DEVICE_ID) {\r
+ \r
Status = EFI_SUCCESS;\r
+ //\r
+ // If this is an Intel 945 graphics controller,\r
+ // go further check RemainingDevicePath validation\r
+ //\r
+ if (RemainingDevicePath != NULL) {\r
+ Node = (EFI_DEV_PATH *) RemainingDevicePath;\r
+ //\r
+ // Check if RemainingDevicePath is the End of Device Path Node, \r
+ // if yes, return EFI_SUCCESS\r
+ //\r
+ if (!IsDevicePathEnd (Node)) {\r
+ //\r
+ // If RemainingDevicePath isn't the End of Device Path Node,\r
+ // check its validation\r
+ //\r
+ if (Node->DevPath.Type != ACPI_DEVICE_PATH ||\r
+ Node->DevPath.SubType != ACPI_ADR_DP ||\r
+ DevicePathNodeLength(&Node->DevPath) != sizeof(ACPI_ADR_DEVICE_PATH)) {\r
+ Status = EFI_UNSUPPORTED;\r
+ }\r
+ }\r
+ }\r
}\r
}\r
\r
// Open PCI I/O Protocol\r
//\r
Status = gBS->OpenProtocol (\r
- Private->Handle,\r
+ Controller,\r
&gEfiPciIoProtocolGuid,\r
(VOID **) &Private->PciIo,\r
This->DriverBindingHandle,\r
- Private->Handle,\r
+ Controller,\r
EFI_OPEN_PROTOCOL_BY_DRIVER\r
);\r
if (EFI_ERROR (Status)) {\r
ParentDevicePath,\r
(EFI_DEVICE_PATH_PROTOCOL *) &AcpiDeviceNode\r
);\r
- } else {\r
+ } else if (!IsDevicePathEnd (RemainingDevicePath)) {\r
+ //\r
+ // If RemainingDevicePath isn't the End of Device Path Node, \r
+ // only scan the specified device by RemainingDevicePath\r
+ //\r
Private->GopDevicePath = AppendDevicePathNode (ParentDevicePath, RemainingDevicePath);\r
+ } else {\r
+ //\r
+ // If RemainingDevicePath is the End of Device Path Node, \r
+ // don't create child device and return EFI_SUCCESS\r
+ //\r
+ Private->GopDevicePath = NULL;\r
+ }\r
+ \r
+ if (Private->GopDevicePath != NULL) {\r
+ //\r
+ // Creat child handle and device path protocol firstly\r
+ //\r
+ Private->Handle = NULL;\r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
+ &Private->Handle,\r
+ &gEfiDevicePathProtocolGuid,\r
+ Private->GopDevicePath,\r
+ NULL\r
+ );\r
}\r
-\r
- //\r
- // Creat child handle and device path protocol firstly\r
- //\r
- Private->Handle = NULL;\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &Private->Handle,\r
- &gEfiDevicePathProtocolGuid,\r
- Private->GopDevicePath,\r
- NULL\r
- );\r
}\r
\r
//\r
);\r
\r
} else if (FeaturePcdGet (PcdSupportGop)) {\r
- //\r
- // Start the GOP software stack.\r
- //\r
- Status = CirrusLogic5430GraphicsOutputConstructor (Private);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &Private->Handle,\r
- &gEfiGraphicsOutputProtocolGuid,\r
- &Private->GraphicsOutput,\r
- &gEfiEdidDiscoveredProtocolGuid,\r
- &Private->EdidDiscovered,\r
- &gEfiEdidActiveProtocolGuid,\r
- &Private->EdidActive,\r
- NULL\r
- );\r
-\r
+ if (Private->GopDevicePath == NULL) {\r
+ //\r
+ // If RemainingDevicePath is the End of Device Path Node, \r
+ // don't create child device and return EFI_SUCCESS\r
+ //\r
+ Status = EFI_SUCCESS;\r
+ } else {\r
+ \r
+ //\r
+ // Start the GOP software stack.\r
+ //\r
+ Status = CirrusLogic5430GraphicsOutputConstructor (Private);\r
+ ASSERT_EFI_ERROR (Status);\r
+ \r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
+ &Private->Handle,\r
+ &gEfiGraphicsOutputProtocolGuid,\r
+ &Private->GraphicsOutput,\r
+ &gEfiEdidDiscoveredProtocolGuid,\r
+ &Private->EdidDiscovered,\r
+ &gEfiEdidActiveProtocolGuid,\r
+ &Private->EdidActive,\r
+ NULL\r
+ );\r
+ }\r
} else {\r
//\r
// This driver must support eithor GOP or UGA or both.\r
TODO: add return values\r
\r
**/\r
-STATIC\r
VOID\r
ClearScreen (\r
CIRRUS_LOGIC_5430_PRIVATE_DATA *Private\r
UINTN ScreenHeight\r
)\r
{\r
- UINTN Offset;\r
- UINTN X;\r
- UINTN Y;\r
- UINT8 Color;\r
-\r
- Offset = 0;\r
- for (Y = 0; Y < ScreenHeight; Y++) {\r
- for (X = 0; X < ScreenWidth; X++) {\r
- Color = (UINT8) (256 * (X + Y) / (ScreenWidth + ScreenHeight));\r
- Private->LineBuffer[X] = Color;\r
- }\r
-\r
- Private->PciIo->Mem.Write (\r
- Private->PciIo,\r
- EfiPciIoWidthUint32,\r
- 0,\r
- Offset + (Y * ScreenWidth),\r
- ScreenWidth >> 2,\r
- Private->LineBuffer\r
- );\r
- }\r
}\r
\r
/**\r
{\r
UINT8 Byte;\r
UINTN Index;\r
+ UINT16 DeviceId;\r
+ EFI_STATUS Status;\r
+\r
+ Status = Private->PciIo->Pci.Read (\r
+ Private->PciIo,\r
+ EfiPciIoWidthUint16,\r
+ PCI_DEVICE_ID_OFFSET,\r
+ 1,\r
+ &DeviceId\r
+ );\r
+ //\r
+ // Read the PCI Configuration Header from the PCI Device\r
+ //\r
+ ASSERT_EFI_ERROR (Status);\r
\r
outw (Private, SEQ_ADDRESS_REGISTER, 0x1206);\r
outw (Private, SEQ_ADDRESS_REGISTER, 0x0012);\r
outw (Private, SEQ_ADDRESS_REGISTER, ModeData->SeqSettings[Index]);\r
}\r
\r
- outb (Private, SEQ_ADDRESS_REGISTER, 0x0f);\r
- Byte = (UINT8) ((inb (Private, SEQ_DATA_REGISTER) & 0xc7) ^ 0x30);\r
- outb (Private, SEQ_DATA_REGISTER, Byte);\r
+ if (DeviceId != CIRRUS_LOGIC_5446_DEVICE_ID) {\r
+ outb (Private, SEQ_ADDRESS_REGISTER, 0x0f);\r
+ Byte = (UINT8) ((inb (Private, SEQ_DATA_REGISTER) & 0xc7) ^ 0x30);\r
+ outb (Private, SEQ_DATA_REGISTER, Byte);\r
+ }\r
\r
outb (Private, MISC_OUTPUT_REGISTER, ModeData->MiscSetting);\r
outw (Private, GRAPH_ADDRESS_REGISTER, 0x0506);\r
projects / mirror_edk2.git / blobdiff