1 files changed, 98 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/UefiPayloadPkg/Library/PlatformHookLib/PlatformHookLib.c b/src/VBox/Devices/EFI/Firmware/UefiPayloadPkg/Library/PlatformHookLib/PlatformHookLib.c
new file mode 100644
index 00000000..621c6bce
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/UefiPayloadPkg/Library/PlatformHookLib/PlatformHookLib.c
@@ -0,0 +1,98 @@
+/** @file
+  Platform Hook Library instance for UART device.
+
+  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Uefi/UefiBaseType.h>
+#include <Library/PciLib.h>
+#include <Library/PlatformHookLib.h>
+#include <Library/BlParseLib.h>
+#include <Library/PcdLib.h>
+
+typedef struct {
+  UINT16  VendorId;          ///< Vendor ID to match the PCI device.  The value 0xFFFF terminates the list of entries.
+  UINT16  DeviceId;          ///< Device ID to match the PCI device
+  UINT32  ClockRate;         ///< UART clock rate.  Set to 0 for default clock rate of 1843200 Hz
+  UINT64  Offset;            ///< The byte offset into to the BAR
+  UINT8   BarIndex;          ///< Which BAR to get the UART base address
+  UINT8   RegisterStride;    ///< UART register stride in bytes.  Set to 0 for default register stride of 1 byte.
+  UINT16  ReceiveFifoDepth;  ///< UART receive FIFO depth in bytes. Set to 0 for a default FIFO depth of 16 bytes.
+  UINT16  TransmitFifoDepth; ///< UART transmit FIFO depth in bytes. Set to 0 for a default FIFO depth of 16 bytes.
+  UINT8   Reserved[2];
+} PCI_SERIAL_PARAMETER;
+
+/**
+  Performs platform specific initialization required for the CPU to access
+  the hardware associated with a SerialPortLib instance.  This function does
+  not initialize the serial port hardware itself.  Instead, it initializes
+  hardware devices that are required for the CPU to access the serial port
+  hardware.  This function may be called more than once.
+
+  @retval RETURN_SUCCESS       The platform specific initialization succeeded.
+  @retval RETURN_DEVICE_ERROR  The platform specific initialization could not be completed.
+
+**/
+RETURN_STATUS
+EFIAPI
+PlatformHookSerialPortInitialize (
+  VOID
+  )
+{
+  RETURN_STATUS         Status;
+  UINT32                DeviceVendor;
+  PCI_SERIAL_PARAMETER  *SerialParam;
+  SERIAL_PORT_INFO      SerialPortInfo;
+
+  Status = ParseSerialInfo (&SerialPortInfo);
+  if (RETURN_ERROR (Status)) {
+    return Status;
+  }
+
+  if (SerialPortInfo.Type == PLD_SERIAL_TYPE_MEMORY_MAPPED) {
+    Status = PcdSetBoolS (PcdSerialUseMmio, TRUE);
+  } else { //IO
+    Status = PcdSetBoolS (PcdSerialUseMmio, FALSE);
+  }
+  if (RETURN_ERROR (Status)) {
+    return Status;
+  }
+  Status = PcdSet64S (PcdSerialRegisterBase, SerialPortInfo.BaseAddr);
+  if (RETURN_ERROR (Status)) {
+    return Status;
+  }
+
+  Status = PcdSet32S (PcdSerialRegisterStride, SerialPortInfo.RegWidth);
+  if (RETURN_ERROR (Status)) {
+    return Status;
+  }
+
+  Status = PcdSet32S (PcdSerialBaudRate, SerialPortInfo.Baud);
+  if (RETURN_ERROR (Status)) {
+    return Status;
+  }
+
+  Status = PcdSet64S (PcdUartDefaultBaudRate, SerialPortInfo.Baud);
+  if (RETURN_ERROR (Status)) {
+    return Status;
+  }
+
+  Status = PcdSet32S (PcdSerialClockRate, SerialPortInfo.InputHertz);
+  if (RETURN_ERROR (Status)) {
+    return Status;
+  }
+
+  if (SerialPortInfo.UartPciAddr >= 0x80000000) {
+    DeviceVendor = PciRead32 (SerialPortInfo.UartPciAddr & 0x0ffff000);
+    SerialParam  = PcdGetPtr(PcdPciSerialParameters);
+    SerialParam->VendorId  = (UINT16)DeviceVendor;
+    SerialParam->DeviceId  = DeviceVendor >> 16;
+    SerialParam->ClockRate = SerialPortInfo.InputHertz;
+    SerialParam->RegisterStride = (UINT8)SerialPortInfo.RegWidth;
+  }
+
+  return RETURN_SUCCESS;
+}