| /*++ | |
| Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> | |
| Portions copyright (c) 2009, Hewlett-Packard Company. All rights reserved.<BR> | |
| Portions copyright (c) 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. | |
| --*/ | |
| #ifndef __ARM_EB_UART_H__ | |
| #define __ARM_EB_UART_H__ | |
| #define SERIAL_PORT_MAX_TIMEOUT 100000000 // 100 seconds | |
| // EB constants | |
| #define EB_UART1_BASE 0x10009000 | |
| // 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 | |
| // If the required baud rate is 115200 and UARTCLK = 24MHz then: | |
| // Baud Rate Divisor = (24×10^6)/(16×115200) = 13.020833 | |
| // This means BRDI = 13 and BRDF = 0.020833 | |
| // Therefore, fractional part, m = integer(0.020833×64) = integer(1.33331) = 1 | |
| // Generated baud rate divider = 13+1/64 = 13.015625 | |
| // Generated baud rate = (24×10^6)/(16×13.015625) = 115246.098 | |
| // Error = (115246.098-115200)/115200 × 100 = 0.04% | |
| #define UART_115200_IDIV 13 | |
| #define UART_115200_FDIV 1 | |
| // add more baud rates here as needed | |
| // 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 UART_CTSEN_CONTROL_MASK 0x8000 | |
| #define UART_RTSEN_CONTROL_MASK 0x4000 | |
| #define UART_RTS_CONTROL_MASK 0x0800 | |
| #define UART_DTR_CONTROL_MASK 0x0400 | |
| #endif |