1 /*++
3 Copyright (c) 2006 - 2009, Intel Corporation
4 Portions copyright (c) 2009, Hewlett-Packard Company
8 which accompanies this distribution. The full text of the license may be found at
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14 --*/
16 #ifndef __ARM_EB_UART_H__
17 #define __ARM_EB_UART_H__
20 #define SERIAL_PORT_MAX_TIMEOUT 100000000 // 100 seconds
23 // EB constants
24 #define EB_UART1_BASE 0x10009000
26 // PL011 Registers
27 #define UARTDR 0x000
28 #define UARTRSR 0x004
29 #define UARTECR 0x004
30 #define UARTFR 0x018
31 #define UARTILPR 0x020
32 #define UARTIBRD 0x024
33 #define UARTFBRD 0x028
34 #define UARTLCR_H 0x02C
35 #define UARTCR 0x030
36 #define UARTIFLS 0x034
37 #define UARTIMSC 0x038
38 #define UARTRIS 0x03C
39 #define UARTMIS 0x040
40 #define UARTICR 0x044
41 #define UARTDMACR 0x048
43 // If the required baud rate is 115200 and UARTCLK = 24MHz then:
44 // Baud Rate Divisor = (24×10^6)/(16×115200) = 13.020833
45 // This means BRDI = 13 and BRDF = 0.020833
46 // Therefore, fractional part, m = integer(0.020833×64) = integer(1.33331) = 1
47 // Generated baud rate divider = 13+1/64 = 13.015625
48 // Generated baud rate = (24×10^6)/(16×13.015625) = 115246.098
49 // Error = (115246.098-115200)/115200 × 100 = 0.04%
50 #define UART_115200_IDIV 13
51 #define UART_115200_FDIV 1
53 // add more baud rates here as needed
55 // data status bits
58 // status reg bits