diff options
author | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-02-01 05:41:42 +0000 |
---|---|---|
committer | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-02-01 05:41:42 +0000 |
commit | 1d5d0ae92d95410f20bc6daab7a47e129fb2547a (patch) | |
tree | 8679c57c5f85cadad47d4604450c1c3702276cf1 /ArmPlatformPkg/Library/PL011SerialPortLib | |
parent | fb334ef6c543b1babc9d8a613ad5d1ce6fe536e1 (diff) | |
download | edk2-1d5d0ae92d95410f20bc6daab7a47e129fb2547a.zip edk2-1d5d0ae92d95410f20bc6daab7a47e129fb2547a.tar.gz edk2-1d5d0ae92d95410f20bc6daab7a47e129fb2547a.tar.bz2 |
Add ArmPlatformPkg from ARM Ltd. patch.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11291 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg/Library/PL011SerialPortLib')
-rw-r--r-- | ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c | 133 | ||||
-rw-r--r-- | ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.inf | 32 |
2 files changed, 165 insertions, 0 deletions
diff --git a/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c new file mode 100644 index 0000000..54ea28a --- /dev/null +++ b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c @@ -0,0 +1,133 @@ +/** @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 <Include/Uefi.h> +#include <Library/SerialPortLib.h> +#include <Library/IoLib.h> +#include <Drivers/PL011Uart.h> +#include <ArmPlatform.h> + +/* + + Programmed hardware of Serial port. + + @return Always return EFI_UNSUPPORTED. + +**/ +RETURN_STATUS +EFIAPI +SerialPortInitialize ( + VOID + ) +{ + if (PL011_CONSOLE_UART_SPEED == 115200) { + // Initialize baud rate generator + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTIBRD, UART_115200_IDIV); + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTFBRD, UART_115200_FDIV); + } else if (PL011_CONSOLE_UART_SPEED == 38400) { + // Initialize baud rate generator + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTIBRD, UART_38400_IDIV); + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTFBRD, UART_38400_FDIV); + } else if (PL011_CONSOLE_UART_SPEED == 19200) { + // Initialize baud rate generator + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTIBRD, UART_19200_IDIV); + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTFBRD, UART_19200_FDIV); + } else { + return EFI_INVALID_PARAMETER; + } + + // No parity, 1 stop, no fifo, 8 data bits + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTLCR_H, 0x60); + + // Clear any pending errors + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTECR, 0); + + // enable tx, rx, and uart overall + MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTCR, 0x301); + + return EFI_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 +) +{ + UINTN Count; + + for (Count = 0; Count < NumberOfBytes; Count++, Buffer++) { + while ((MmioRead32 (PL011_CONSOLE_UART_BASE + UARTFR) & UART_TX_EMPTY_FLAG_MASK) == 0); + MmioWrite8 (PL011_CONSOLE_UART_BASE + UARTDR, *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 +) +{ + UINTN Count; + + for (Count = 0; Count < NumberOfBytes; Count++, Buffer++) { + while ((MmioRead32 (PL011_CONSOLE_UART_BASE + UARTFR) & UART_RX_EMPTY_FLAG_MASK) != 0); + *Buffer = MmioRead8 (PL011_CONSOLE_UART_BASE + UARTDR); + } + + 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 + ) +{ + return ((MmioRead32 (PL011_CONSOLE_UART_BASE + UARTFR) & UART_RX_EMPTY_FLAG_MASK) == 0); +} diff --git a/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.inf b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.inf new file mode 100644 index 0000000..b9d8694 --- /dev/null +++ b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.inf @@ -0,0 +1,32 @@ +#/** @file +# +# Component discription file for NorFlashDxe module +# +# Copyright (c) 2010, ARM Ltd. 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. +# +#**/ + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = PL011SerialPortLib + FILE_GUID = 8ecefc8f-a2c4-4091-b80f-20f7aeb0567f + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = SerialPortLib + +[Sources.common] + PL011SerialPortLib.c + +[LibraryClasses] + IoLib + +[Packages] + MdePkg/MdePkg.dec + ArmPlatformPkg/ArmPlatformPkg.dec |