1 /******************************************************************************
2 * Copyright (c) 2011 Texas Instruments Incorporated - http://www.ti.com
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the
14 * distribution.
15 *
16 * Neither the name of Texas Instruments Incorporated nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 *****************************************************************************/
34 /******************************************************************************
35 *
36 * File Name: evmc66x_i2c_uart.h
37 *
38 * Description: This contains UART specific structure, typedefs, function
39 * prototypes.
40 *
41 ******************************************************************************/
42 #ifndef _EVM66X_I2C_UART_H_
43 #define _EVM66X_I2C_UART_H_
44 #include <stdint.h>
46 #define UART_REGS_BASE (0x02540000)
48 /**************************************************************************\
49 * Register Overlay Structure
50 \**************************************************************************/
51 typedef struct {
52 volatile uint32_t RBR;
53 volatile uint32_t IER;
54 volatile uint32_t IIR;
55 volatile uint32_t LCR;
56 volatile uint32_t MCR;
57 volatile uint32_t LSR;
58 volatile uint32_t MSR;
59 volatile uint32_t SCR;
60 volatile uint32_t DLL;
61 volatile uint32_t DLH;
62 volatile uint32_t REVID1;
63 volatile uint32_t REVID2;
64 volatile uint32_t PWREMU_MGMT;
65 volatile uint32_t MDR;
66 } UartRegs;
68 /************************
69 * Defines and Macros
70 ************************/
71 /* Mask to enable DLL and DLM */
72 #define DLAB (0x80) // Way to swap mem banks
74 /* for 19200 baudrate for crystal clock 14.7456 MHz*/
75 #define DLL_VAL (0x30)
76 #define DLM_VAL (0x00)
78 /* Macros to be used for setting baudrate */
79 #define BAUD_RATE_9600 (0x0060)
80 #define BAUD_RATE_19200 (0x0030)
81 #define BAUD_RATE_56000 (0x0010)
82 #define BAUD_RATE_115200 (0x0008)
84 #define hUartRegs ((UartRegs*) UART_REGS_BASE)
86 /* Following 2 lines are added due to CSL3.x tools limitations */
87 #define THR RBR /* RBR & THR have same offset */
88 #define FCR IIR /* IIR & FCR have same offset */
90 #define UART_LSR_THRE_MASK (0x00000020u)
91 #define UART_THR_DATA_MASK (0x000000FFu)
93 /************************
94 * Function declarations
95 ************************/
96 void uart_init(void);
97 void uart_write_string(uint8_t * str, uint32_t length);
98 #endif /* _EVM66X_I2C_UART_H_ */