For the purpose of UEFI debug prints enablement in early DXE,
Serial driver should load earlier. To comply with EDK2 specification
and maximize code reuse, new driver entrypoint was created
and separate .inf file was added.
Cc: Zhichao Gao <zhichao....@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Signed-off-by: Alan Borzeszkowski <alan.borzeszkow...@intel.com>
---
.../PciSioSerialDxe/PciSioSerialDxeEarly.inf | 81 ++++++++
MdeModulePkg/Bus/Pci/PciSioSerialDxe/Serial.c | 184 ++++++++++++++----
.../Bus/Pci/PciSioSerialDxe/SerialIo.c | 16 +-
MdeModulePkg/MdeModulePkg.dsc | 1 +
4 files changed, 245 insertions(+), 37 deletions(-)
create mode 100644
MdeModulePkg/Bus/Pci/PciSioSerialDxe/PciSioSerialDxeEarly.inf
diff --git a/MdeModulePkg/Bus/Pci/PciSioSerialDxe/PciSioSerialDxeEarly.inf
b/MdeModulePkg/Bus/Pci/PciSioSerialDxe/PciSioSerialDxeEarly.inf
new file mode 100644
index 0000000000..1b88f7a1cc
--- /dev/null
+++ b/MdeModulePkg/Bus/Pci/PciSioSerialDxe/PciSioSerialDxeEarly.inf
@@ -0,0 +1,81 @@
+## @file
+# Serial driver for standard UARTS on a SIO chip or PCI/PCIE card.
+#
+# Produces the Serial I/O protocol for standard UARTS using Super I/O or PCI
I/O.
+#
+# This is Early DXE version of Serial driver. It's intended use is for debug
purposes
+# in early DXE. There is added dependency on either Super I/O Protocol or PCI
I/O Protocol.
+#
+# Copyright (c) 2007 - 2024, Intel Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = PciSioSerialDxeEarly
+ MODULE_UNI_FILE = PciSioSerialDxe.uni
+ FILE_GUID = E47C4BFB-9CCC-47B6-A3C1-79C3FBF8B6C8
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = DxePciSioSerialDriverEntrypoint
+
+#
+# The following information is for reference only and not required by the
build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 EBC
+#
+# DRIVER_BINDING = gSerialControllerDriver
+# COMPONENT_NAME = gPciSioSerialComponentName
+# COMPONENT_NAME2 = gPciSioSerialComponentName2
+#
+
+[Sources]
+ ComponentName.c
+ SerialIo.c
+ Serial.h
+ Serial.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+
+[LibraryClasses]
+ PcdLib
+ ReportStatusCodeLib
+ UefiBootServicesTableLib
+ MemoryAllocationLib
+ BaseMemoryLib
+ DevicePathLib
+ UefiLib
+ UefiDriverEntryPoint
+ DebugLib
+ IoLib
+
+[Guids]
+ gEfiUartDevicePathGuid ## SOMETIMES_CONSUMES ## GUID
+
+[Protocols]
+ gEfiSioProtocolGuid ## TO_START
+ gEfiDevicePathProtocolGuid ## TO_START
+ gEfiPciIoProtocolGuid ## TO_START
+ gEfiSerialIoProtocolGuid ## BY_START
+ gEfiDevicePathProtocolGuid ## BY_START
+
+[FeaturePcd]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdSerialUseHalfHandshake|FALSE ## CONSUMES
+
+[Pcd]
+ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate|115200 ## CONSUMES
+ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits|8 ## CONSUMES
+ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity|1 ## CONSUMES
+ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits|1 ## CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdSerialClockRate|1843200 ## CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdPciSerialParameters ## CONSUMES
+
+[UserExtensions.TianoCore."ExtraFiles"]
+ PciSioSerialDxeExtra.uni
+
+[Depex]
+ gEfiSioProtocolGuid OR gEfiPciIoProtocolGuid
diff --git a/MdeModulePkg/Bus/Pci/PciSioSerialDxe/Serial.c
b/MdeModulePkg/Bus/Pci/PciSioSerialDxe/Serial.c
index 8b1ce70118..cc77d12748 100644
--- a/MdeModulePkg/Bus/Pci/PciSioSerialDxe/Serial.c
+++ b/MdeModulePkg/Bus/Pci/PciSioSerialDxe/Serial.c
@@ -156,6 +156,7 @@ InitializePciSioSerial (
/**
Return whether the controller is a SIO serial controller.
+ @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param Controller The controller handle.
@retval EFI_SUCCESS The controller is a SIO serial controller.
@@ -163,7 +164,8 @@ InitializePciSioSerial (
**/
EFI_STATUS
IsSioSerialController (
- EFI_HANDLE Controller
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ EFI_HANDLE Controller
)
{
EFI_STATUS Status;
@@ -178,7 +180,7 @@ IsSioSerialController (
Controller,
&gEfiSioProtocolGuid,
(VOID **)&Sio,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
@@ -193,7 +195,7 @@ IsSioSerialController (
gBS->CloseProtocol (
Controller,
&gEfiSioProtocolGuid,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller
);
@@ -201,7 +203,7 @@ IsSioSerialController (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **)&DevicePath,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
@@ -228,7 +230,7 @@ IsSioSerialController (
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller
);
}
@@ -239,14 +241,16 @@ IsSioSerialController (
/**
Return whether the controller is a PCI serial controller.
- @param Controller The controller handle.
+ @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL
instance.
+ @param Controller The controller handle.
@retval EFI_SUCCESS The controller is a PCI serial controller.
@retval others The controller is not a PCI serial controller.
**/
EFI_STATUS
IsPciSerialController (
- EFI_HANDLE Controller
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ EFI_HANDLE Controller
)
{
EFI_STATUS Status;
@@ -262,7 +266,7 @@ IsPciSerialController (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **)&PciIo,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
@@ -301,7 +305,7 @@ IsPciSerialController (
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller
);
}
@@ -317,7 +321,7 @@ IsPciSerialController (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **)&DevicePath,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
@@ -329,7 +333,7 @@ IsPciSerialController (
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller
);
@@ -348,12 +352,11 @@ IsPciSerialController (
**/
EFI_STATUS
EFIAPI
-SerialControllerDriverSupported (
+SerialDriverSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
-
{
EFI_STATUS Status;
UART_DEVICE_PATH *Uart;
@@ -393,17 +396,40 @@ SerialControllerDriverSupported (
}
}
- Status = IsSioSerialController (Controller);
+ Status = IsSioSerialController (This, Controller);
if (EFI_ERROR (Status)) {
- Status = IsPciSerialController (Controller);
+ Status = IsPciSerialController (This, Controller);
}
return Status;
}
+/**
+ Check to see if this driver supports the given controller
+
+ @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL
instance.
+ @param Controller The handle of the controller to test.
+ @param RemainingDevicePath A pointer to the remaining portion of a device
path.
+
+ @return EFI_SUCCESS This driver can support the given controller
+
+**/
+EFI_STATUS
+EFIAPI
+SerialControllerDriverSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+
+{
+ return SerialDriverSupported (This, Controller, RemainingDevicePath);
+}
+
/**
Create the child serial device instance.
+ @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL
instance.
@param Controller The parent controller handle.
@param Uart Pointer to the UART device path node in
RemainingDevicePath,
or NULL if RemainingDevicePath is NULL.
@@ -423,14 +449,15 @@ SerialControllerDriverSupported (
**/
EFI_STATUS
CreateSerialDevice (
- IN EFI_HANDLE Controller,
- IN UART_DEVICE_PATH *Uart,
- IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,
- IN BOOLEAN CreateControllerNode,
- IN UINT32 Instance,
- IN PARENT_IO_PROTOCOL_PTR ParentIo,
- IN PCI_SERIAL_PARAMETER *PciSerialParameter OPTIONAL,
- IN PCI_DEVICE_INFO *PciDeviceInfo OPTIONAL
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN UART_DEVICE_PATH *Uart,
+ IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,
+ IN BOOLEAN CreateControllerNode,
+ IN UINT32 Instance,
+ IN PARENT_IO_PROTOCOL_PTR ParentIo,
+ IN PCI_SERIAL_PARAMETER *PciSerialParameter OPTIONAL,
+ IN PCI_DEVICE_INFO *PciDeviceInfo OPTIONAL
)
{
EFI_STATUS Status;
@@ -685,7 +712,7 @@ CreateSerialDevice (
Controller,
PciSerialParameter != NULL ? &gEfiPciIoProtocolGuid :
&gEfiSioProtocolGuid,
(VOID **)&ParentIo,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
SerialDevice->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
@@ -720,6 +747,7 @@ CreateError:
/**
Returns an array of pointers containing all the child serial device pointers.
+ @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param Controller The parent controller handle.
@param IoProtocolGuid The protocol GUID, either equals to
gEfiSioProtocolGuid
or equals to gEfiPciIoProtocolGuid.
@@ -729,9 +757,10 @@ CreateError:
**/
SERIAL_DEV **
GetChildSerialDevices (
- IN EFI_HANDLE Controller,
- IN EFI_GUID *IoProtocolGuid,
- OUT UINTN *Count
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_GUID *IoProtocolGuid,
+ OUT UINTN *Count
)
{
EFI_STATUS Status;
@@ -768,7 +797,7 @@ GetChildSerialDevices (
OpenInfoBuffer[Index].ControllerHandle,
&gEfiSerialIoProtocolGuid,
(VOID **)&SerialIo,
- gSerialControllerDriver.DriverBindingHandle,
+ This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
@@ -778,7 +807,7 @@ GetChildSerialDevices (
}
if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) != 0)
{
- ASSERT (OpenInfoBuffer[Index].AgentHandle ==
gSerialControllerDriver.DriverBindingHandle);
+ ASSERT (OpenInfoBuffer[Index].AgentHandle == This->DriverBindingHandle);
OpenByDriver = TRUE;
}
}
@@ -793,7 +822,7 @@ GetChildSerialDevices (
}
/**
- Start to management the controller passed in
+ Start to manage the controller passed in
@param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL
instance.
@param Controller The handle of the controller to test.
@@ -803,7 +832,7 @@ GetChildSerialDevices (
**/
EFI_STATUS
EFIAPI
-SerialControllerDriverStart (
+SerialDriverStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
@@ -890,7 +919,7 @@ SerialControllerDriverStart (
ControllerNumber = 0;
ContainsControllerNode = FALSE;
- SerialDevices = GetChildSerialDevices (Controller, IoProtocolGuid,
&SerialDeviceCount);
+ SerialDevices = GetChildSerialDevices (This, Controller,
IoProtocolGuid, &SerialDeviceCount);
if (SerialDeviceCount != 0) {
if (RemainingDevicePath == NULL) {
@@ -991,7 +1020,7 @@ SerialControllerDriverStart (
Node = NextDevicePathNode (Node);
} while (!IsDevicePathEnd (Node));
- Status = CreateSerialDevice (Controller, Uart, ParentDevicePath, FALSE,
Acpi->UID, ParentIo, NULL, NULL);
+ Status = CreateSerialDevice (This, Controller, Uart, ParentDevicePath,
FALSE, Acpi->UID, ParentIo, NULL, NULL);
DEBUG ((DEBUG_INFO, "PciSioSerial: Create SIO child serial device -
%r\n", Status));
}
} else {
@@ -1073,7 +1102,7 @@ SerialControllerDriverStart (
PciSerialParameter = PcdGetPtr (PcdPciSerialParameters);
}
- Status = CreateSerialDevice (Controller, Uart, ParentDevicePath,
FALSE, 0, ParentIo, PciSerialParameter, PciDeviceInfo);
+ Status = CreateSerialDevice (This, Controller, Uart,
ParentDevicePath, FALSE, 0, ParentIo, PciSerialParameter, PciDeviceInfo);
DEBUG ((DEBUG_INFO, "PciSioSerial: Create PCI child serial device
(single) - %r\n", Status));
if (!EFI_ERROR (Status)) {
PciDeviceInfo->ChildCount++;
@@ -1094,7 +1123,7 @@ SerialControllerDriverStart (
//
// Create controller node when PCI serial device contains
multiple UARTs
//
- Status = CreateSerialDevice (Controller, Uart, ParentDevicePath,
TRUE, PciSerialCount, ParentIo, PciSerialParameter, PciDeviceInfo);
+ Status = CreateSerialDevice (This, Controller, Uart,
ParentDevicePath, TRUE, PciSerialCount, ParentIo, PciSerialParameter,
PciDeviceInfo);
PciSerialCount++;
DEBUG ((DEBUG_INFO, "PciSioSerial: Create PCI child serial
device (multiple) - %r\n", Status));
if (!EFI_ERROR (Status)) {
@@ -1147,6 +1176,91 @@ SerialControllerDriverStart (
return Status;
}
+/**
+ Start to manage the controller passed in
+
+ @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL
instance.
+ @param Controller The handle of the controller to test.
+ @param RemainingDevicePath A pointer to the remaining portion of a device
path.
+
+ @return EFI_SUCCESS Driver is started successfully
+**/
+EFI_STATUS
+EFIAPI
+SerialControllerDriverStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ return SerialDriverStart (This, Controller, RemainingDevicePath);
+}
+
+/**
+ Initialize Serial driver in DXE phase
+
+ @param ImageHandle Handle for the image of this driver.
+ @param SystemTable Pointer to the EFI System Table.
+
+ @return EFI_SUCCESS Driver is started successfully
+**/
+EFI_STATUS
+EFIAPI
+DxePciSioSerialDriverEntrypoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_DEVICE_PATH_PROTOCOL *EfiDevicePath;
+ EFI_HANDLE *HandleBuffer;
+ UINTN NumberOfHandles;
+ EFI_DRIVER_BINDING_PROTOCOL *SerialControllerDriver;
+ UINTN Index;
+
+ EfiDevicePath = NULL;
+ HandleBuffer = NULL;
+ //
+ // Initialize the serial controller instance
+ //
+ SerialControllerDriver = AllocateCopyPool (sizeof
(EFI_DRIVER_BINDING_PROTOCOL), &gSerialControllerDriver);
+ ASSERT (SerialControllerDriver != NULL);
+
+ SerialControllerDriver->DriverBindingHandle = ImageHandle;
+ //
+ // Initialize UART default setting in gSerialDevTemplate
+ //
+ gSerialDevTemplate.SerialMode.BaudRate = PcdGet64
(PcdUartDefaultBaudRate);
+ gSerialDevTemplate.SerialMode.DataBits = PcdGet8
(PcdUartDefaultDataBits);
+ gSerialDevTemplate.SerialMode.Parity = PcdGet8 (PcdUartDefaultParity);
+ gSerialDevTemplate.SerialMode.StopBits = PcdGet8
(PcdUartDefaultStopBits);
+ gSerialDevTemplate.UartDevicePath.BaudRate = PcdGet64
(PcdUartDefaultBaudRate);
+ gSerialDevTemplate.UartDevicePath.DataBits = PcdGet8
(PcdUartDefaultDataBits);
+ gSerialDevTemplate.UartDevicePath.Parity = PcdGet8 (PcdUartDefaultParity);
+ gSerialDevTemplate.UartDevicePath.StopBits = PcdGet8
(PcdUartDefaultStopBits);
+ gSerialDevTemplate.ClockRate = PcdGet32 (PcdSerialClockRate);
+
+ // Check all handles for compatible Device Path and appropriate I/O Protocol
+ Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiDevicePathProtocolGuid,
NULL, &NumberOfHandles, &HandleBuffer);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ for (Index = 0; Index < NumberOfHandles; Index++) {
+ EfiDevicePath = DevicePathFromHandle (HandleBuffer[Index]);
+ Status = SerialDriverSupported (SerialControllerDriver,
HandleBuffer[Index], EfiDevicePath);
+ DEBUG ((DEBUG_INFO, "SerialDriverSupported status: %r\n", Status));
+ if (EFI_ERROR (Status)) {
+ continue;
+ }
+
+ Status = SerialDriverStart (SerialControllerDriver, HandleBuffer[Index],
EfiDevicePath);
+ DEBUG ((DEBUG_INFO, "SerialDriverStart status: %r\n", Status));
+ }
+
+ return EFI_SUCCESS;
+}
+
/**
Disconnect this driver with the controller, uninstall related protocol
instance
diff --git a/MdeModulePkg/Bus/Pci/PciSioSerialDxe/SerialIo.c
b/MdeModulePkg/Bus/Pci/PciSioSerialDxe/SerialIo.c
index 8a85a6c3b8..c052d43b84 100644
--- a/MdeModulePkg/Bus/Pci/PciSioSerialDxe/SerialIo.c
+++ b/MdeModulePkg/Bus/Pci/PciSioSerialDxe/SerialIo.c
@@ -1367,7 +1367,13 @@ SerialReadRegister (
EFI_STATUS Status;
if (SerialDev->PciDeviceInfo == NULL) {
- return IoRead8 ((UINTN)SerialDev->BaseAddress + Offset *
SerialDev->RegisterStride);
+ if (SerialDev->MmioAccess)
+ {
+ return MmioRead8((UINTN)SerialDev->BaseAddress + Offset *
SerialDev->RegisterStride);
+ }
+ else {
+ return IoRead8 ((UINTN)SerialDev->BaseAddress + Offset *
SerialDev->RegisterStride);
+ }
} else {
if (SerialDev->MmioAccess) {
Status = SerialDev->PciDeviceInfo->PciIo->Mem.Read (
@@ -1411,7 +1417,13 @@ SerialWriteRegister (
EFI_STATUS Status;
if (SerialDev->PciDeviceInfo == NULL) {
- IoWrite8 ((UINTN)SerialDev->BaseAddress + Offset *
SerialDev->RegisterStride, Data);
+ if (SerialDev->MmioAccess)
+ {
+ MmioWrite8((UINTN)SerialDev->BaseAddress + Offset *
SerialDev->RegisterStride, Data);
+ }
+ else {
+ IoWrite8 ((UINTN)SerialDev->BaseAddress + Offset *
SerialDev->RegisterStride, Data);
+ }
} else {
if (SerialDev->MmioAccess) {
Status = SerialDev->PciDeviceInfo->PciIo->Mem.Write (
diff --git a/MdeModulePkg/MdeModulePkg.dsc b/MdeModulePkg/MdeModulePkg.dsc
index c0f1df3bfb..b209fe2696 100644
--- a/MdeModulePkg/MdeModulePkg.dsc
+++ b/MdeModulePkg/MdeModulePkg.dsc
@@ -240,6 +240,7 @@
MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
MdeModulePkg/Bus/Pci/PciSioSerialDxe/PciSioSerialDxe.inf
+ MdeModulePkg/Bus/Pci/PciSioSerialDxe/PciSioSerialDxeEarly.inf
MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
MdeModulePkg/Bus/Pci/IncompatiblePciDeviceSupportDxe/IncompatiblePciDeviceSupportDxe.inf
MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressDxe.inf
--
2.34.1
---------------------------------------------------------------------
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