diff options
Diffstat (limited to 'BeagleBoardPkg/Library/SerialPortLib')
| -rw-r--r-- | BeagleBoardPkg/Library/SerialPortLib/SerialPortLib.c | 124 | ||||
| -rw-r--r-- | BeagleBoardPkg/Library/SerialPortLib/SerialPortLib.inf | 44 |
2 files changed, 168 insertions, 0 deletions
diff --git a/BeagleBoardPkg/Library/SerialPortLib/SerialPortLib.c b/BeagleBoardPkg/Library/SerialPortLib/SerialPortLib.c new file mode 100644 index 0000000000..0509deb8ab --- /dev/null +++ b/BeagleBoardPkg/Library/SerialPortLib/SerialPortLib.c @@ -0,0 +1,124 @@ +/** @file
+ Serial I/O Port library functions with no library constructor/destructor
+
+
+ Copyright (c) 2008-2009, Apple Inc. All rights reserved.
+
+ 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 <Base.h>
+#include <Library/DebugLib.h>
+#include <Library/SerialPortLib.h>
+#include <Library/PcdLib.h>
+#include <Library/IoLib.h>
+#include <Library/OmapLib.h>
+#include <Omap3530/Omap3530.h>
+
+/*
+
+ Programmed hardware of Serial port.
+
+ @return Always return EFI_UNSUPPORTED.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortInitialize (
+ VOID
+ )
+{
+ // assume assembly code at reset vector has setup UART
+ return RETURN_SUCCESS;
+}
+
+/**
+ Write data to serial device.
+
+ @param Buffer Point of data buffer which need to be writed.
+ @param NumberOfBytes Number of output bytes which are cached in Buffer.
+
+ @retval 0 Write data failed.
+ @retval !0 Actual number of bytes writed to serial device.
+
+**/
+UINTN
+EFIAPI
+SerialPortWrite (
+ IN UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+)
+{
+ UINT32 LSR = UartBase(PcdGet32(PcdBeagleConsoleUart)) + UART_LSR_REG;
+ UINT32 THR = UartBase(PcdGet32(PcdBeagleConsoleUart)) + UART_THR_REG;
+ UINTN Count;
+
+ for (Count = 0; Count < NumberOfBytes; Count++, Buffer++) {
+ while ((MmioRead8(LSR) & UART_LSR_TX_FIFO_E_MASK) == UART_LSR_TX_FIFO_E_NOT_EMPTY);
+ MmioWrite8(THR, *Buffer);
+ }
+
+ return NumberOfBytes;
+}
+
+
+/**
+ Read data from serial device and save the datas in buffer.
+
+ @param Buffer Point of data buffer which need to be writed.
+ @param NumberOfBytes Number of output bytes which are cached in Buffer.
+
+ @retval 0 Read data failed.
+ @retval !0 Aactual number of bytes read from serial device.
+
+**/
+UINTN
+EFIAPI
+SerialPortRead (
+ OUT UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+)
+{
+ UINT32 LSR = UartBase(PcdGet32(PcdBeagleConsoleUart)) + UART_LSR_REG;
+ UINT32 RBR = UartBase(PcdGet32(PcdBeagleConsoleUart)) + UART_RBR_REG;
+ UINTN Count;
+
+ for (Count = 0; Count < NumberOfBytes; Count++, Buffer++) {
+ while ((MmioRead8(LSR) & UART_LSR_RX_FIFO_E_MASK) == UART_LSR_RX_FIFO_E_EMPTY);
+ *Buffer = MmioRead8(RBR);
+ }
+
+ return NumberOfBytes;
+}
+
+
+/**
+ Check to see if any data is avaiable to be read from the debug device.
+
+ @retval EFI_SUCCESS At least one byte of data is avaiable to be read
+ @retval EFI_NOT_READY No data is avaiable to be read
+ @retval EFI_DEVICE_ERROR The serial device is not functioning properly
+
+**/
+BOOLEAN
+EFIAPI
+SerialPortPoll (
+ VOID
+ )
+{
+ UINT32 LSR = UartBase(PcdGet32(PcdBeagleConsoleUart)) + UART_LSR_REG;
+
+ if ((MmioRead8(LSR) & UART_LSR_RX_FIFO_E_MASK) == UART_LSR_RX_FIFO_E_NOT_EMPTY) {
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
diff --git a/BeagleBoardPkg/Library/SerialPortLib/SerialPortLib.inf b/BeagleBoardPkg/Library/SerialPortLib/SerialPortLib.inf new file mode 100644 index 0000000000..b81bbca657 --- /dev/null +++ b/BeagleBoardPkg/Library/SerialPortLib/SerialPortLib.inf @@ -0,0 +1,44 @@ +#%HEADER%
+#/** @file
+# EDK Serial port lib
+#
+# Copyright (c) 2009, Apple Inc.
+#
+# 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.
+#
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = BeagleBoardSerialPortLib
+ FILE_GUID = 97546cbd-c0ff-4c48-ab0b-e4f58862acd3
+ MODULE_TYPE = PEIM
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = SerialPortLib
+
+
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources.common]
+ SerialPortLib.c
+
+[LibraryClasses]
+ DebugLib
+ IoLib
+ OmapLib
+
+[Packages]
+ MdePkg/MdePkg.dec
+ BeagleBoardPkg/BeagleBoardPkg.dec
+
+[FixedPcd]
+ gBeagleBoardTokenSpaceGuid.PcdBeagleConsoleUart
+
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