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| author | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-07-02 12:00:00 +0000 |
|---|---|---|
| committer | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-07-02 12:00:00 +0000 |
| commit | afdfe8f02bdf8d563554bb620c001072862b064e (patch) | |
| tree | 133edcc99dcde42e92643907f76a093647a322c2 /ArmRealViewEbPkg/Library/SerialPortLib/SerialPortLib.c | |
| parent | 7ee525b2c1f8d3d6da5f788364fe5be36a979c9c (diff) | |
| download | edk2-afdfe8f02bdf8d563554bb620c001072862b064e.tar.gz edk2-afdfe8f02bdf8d563554bb620c001072862b064e.tar.bz2 edk2-afdfe8f02bdf8d563554bb620c001072862b064e.zip | |
Remove ArmEbPkg and replace with ArmRealViewEbPkg. Ported ArmRealViewEbPkg to have a PEI phase, and added place holder CPU PEIM to ArmPkg. This ArmRealViewEbPkg now boots from SEC, PEI, DXE, BDS, to EBL in the ARM RealView system emulator that comes with RealView Pro.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10621 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmRealViewEbPkg/Library/SerialPortLib/SerialPortLib.c')
| -rwxr-xr-x | ArmRealViewEbPkg/Library/SerialPortLib/SerialPortLib.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/ArmRealViewEbPkg/Library/SerialPortLib/SerialPortLib.c b/ArmRealViewEbPkg/Library/SerialPortLib/SerialPortLib.c new file mode 100755 index 0000000000..90e559a245 --- /dev/null +++ b/ArmRealViewEbPkg/Library/SerialPortLib/SerialPortLib.c @@ -0,0 +1,137 @@ +/** @file
+ Serial I/O Port library functions with no library constructor/destructor
+
+
+ Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
+
+ 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/SerialPortLib.h>
+#include <Library/PcdLib.h>
+#include <Library/IoLib.h>
+
+#include <ArmEb/ArmEb.h>
+
+/*
+
+ Programmed hardware of Serial port.
+
+ @return Always return EFI_UNSUPPORTED.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortInitialize (
+ VOID
+ )
+{
+ UINT32 Base = PcdGet32 (PcdConsoleUartBase);
+
+ // initialize baud rate generator to 115200 based on EB clock REFCLK24MHZ
+ MmioWrite32 (Base + UARTIBRD, UART_115200_IDIV);
+ MmioWrite32 (Base + UARTFBRD, UART_115200_FDIV);
+
+ // no parity, 1 stop, no fifo, 8 data bits
+ MmioWrite32 (Base + UARTLCR_H, 0x60);
+
+ // clear any pending errors
+ MmioWrite32 (Base + UARTECR, 0);
+
+ // enable tx, rx, and uart overall
+ MmioWrite32 (Base + UARTCR, 0x301);
+
+ 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 FR = PcdGet32 (PcdConsoleUartBase) + UARTFR;
+ UINT32 DR = PcdGet32 (PcdConsoleUartBase) + UARTDR;
+ UINTN Count;
+
+ for (Count = 0; Count < NumberOfBytes; Count++, Buffer++) {
+ while ((MmioRead32 (FR) & UART_TX_EMPTY_FLAG_MASK) == 0);
+ MmioWrite8 (DR, *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 FR = PcdGet32 (PcdConsoleUartBase) + UARTFR;
+ UINT32 DR = PcdGet32 (PcdConsoleUartBase) + UARTDR;
+ UINTN Count;
+
+ for (Count = 0; Count < NumberOfBytes; Count++, Buffer++) {
+ while ((MmioRead32 (FR) & UART_RX_EMPTY_FLAG_MASK) != 0);
+ *Buffer = MmioRead8 (DR);
+ }
+
+ 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 FR = PcdGet32 (PcdConsoleUartBase) + UARTFR;
+
+ if ((MmioRead32 (FR) & UART_RX_EMPTY_FLAG_MASK) == 0) {
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
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