| /** @file |
| * |
| * Copyright (c) 2011, ARM Limited. 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. |
| * |
| **/ |
| |
| #ifndef __PL011_UART_H__ |
| #define __PL011_UART_H__ |
| |
| // PL011 Registers |
| #define UARTDR 0x000 |
| #define UARTRSR 0x004 |
| #define UARTECR 0x004 |
| #define UARTFR 0x018 |
| #define UARTILPR 0x020 |
| #define UARTIBRD 0x024 |
| #define UARTFBRD 0x028 |
| #define UARTLCR_H 0x02C |
| #define UARTCR 0x030 |
| #define UARTIFLS 0x034 |
| #define UARTIMSC 0x038 |
| #define UARTRIS 0x03C |
| #define UARTMIS 0x040 |
| #define UARTICR 0x044 |
| #define UARTDMACR 0x048 |
| |
| #define UART_115200_IDIV 13 // Integer Part |
| #define UART_115200_FDIV 1 // Fractional Part |
| #define UART_38400_IDIV 39 |
| #define UART_38400_FDIV 5 |
| #define UART_19200_IDIV 12 |
| #define UART_19200_FDIV 37 |
| |
| // Data status bits |
| #define UART_DATA_ERROR_MASK 0x0F00 |
| |
| // Status reg bits |
| #define UART_STATUS_ERROR_MASK 0x0F |
| |
| // Flag reg bits |
| #define UART_TX_EMPTY_FLAG_MASK 0x80 |
| #define UART_RX_FULL_FLAG_MASK 0x40 |
| #define UART_TX_FULL_FLAG_MASK 0x20 |
| #define UART_RX_EMPTY_FLAG_MASK 0x10 |
| #define UART_BUSY_FLAG_MASK 0x08 |
| |
| // Control reg bits |
| #define PL011_UARTCR_CTSEN (1 << 15) // CTS hardware flow control enable |
| #define PL011_UARTCR_RTSEN (1 << 14) // RTS hardware flow control enable |
| #define PL011_UARTCR_RTS (1 << 11) // Request to send |
| #define PL011_UARTCR_DTR (1 << 10) // Data transmit ready. |
| #define PL011_UARTCR_RXE (1 << 9) // Receive enable |
| #define PL011_UARTCR_TXE (1 << 8) // Transmit enable |
| #define PL011_UARTCR_UARTEN (1 << 0) // UART Enable |
| |
| // Line Control Register Bits |
| #define PL011_UARTLCR_H_SPS (1 << 7) // Stick parity select |
| #define PL011_UARTLCR_H_WLEN_8 (3 << 5) |
| #define PL011_UARTLCR_H_WLEN_7 (2 << 5) |
| #define PL011_UARTLCR_H_WLEN_6 (1 << 5) |
| #define PL011_UARTLCR_H_WLEN_5 (0 << 5) |
| #define PL011_UARTLCR_H_FEN (1 << 4) // FIFOs Enable |
| #define PL011_UARTLCR_H_STP2 (1 << 3) // Two stop bits select |
| #define PL011_UARTLCR_H_EPS (1 << 2) // Even parity select |
| #define PL011_UARTLCR_H_PEN (1 << 1) // Parity Enable |
| #define PL011_UARTLCR_H_BRK (1 << 0) // Send break |
| |
| /* |
| |
| Programmed hardware of Serial port. |
| |
| @return Always return EFI_UNSUPPORTED. |
| |
| **/ |
| RETURN_STATUS |
| EFIAPI |
| PL011UartInitialize ( |
| IN UINTN UartBase, |
| IN UINTN BaudRate, |
| IN UINTN LineControl |
| ); |
| |
| /** |
| 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 |
| PL011UartWrite ( |
| IN UINTN UartBase, |
| IN UINT8 *Buffer, |
| IN UINTN 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 |
| PL011UartRead ( |
| IN UINTN UartBase, |
| OUT UINT8 *Buffer, |
| IN UINTN 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 |
| PL011UartPoll ( |
| IN UINTN UartBase |
| ); |
| |
| #endif |