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028ab6b5 WD |
1 | /* |
2 | * Author: Xilinx, Inc. | |
3 | * | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License as published by the | |
7 | * Free Software Foundation; either version 2 of the License, or (at your | |
8 | * option) any later version. | |
9 | * | |
10 | * | |
11 | * XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A | |
12 | * COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS | |
13 | * ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD, | |
14 | * XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE | |
15 | * FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING | |
16 | * ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION. | |
17 | * XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO | |
18 | * THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY | |
19 | * WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM | |
20 | * CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
21 | * FITNESS FOR A PARTICULAR PURPOSE. | |
22 | * | |
23 | * | |
24 | * Xilinx hardware products are not intended for use in life support | |
25 | * appliances, devices, or systems. Use in such applications is | |
26 | * expressly prohibited. | |
27 | * | |
28 | * | |
29 | * (c) Copyright 2002-2004 Xilinx Inc. | |
30 | * All rights reserved. | |
31 | * | |
32 | * | |
33 | * You should have received a copy of the GNU General Public License along | |
34 | * with this program; if not, write to the Free Software Foundation, Inc., | |
35 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
36 | * | |
37 | */ | |
38 | ||
4ff170a8 | 39 | #include <common.h> |
028ab6b5 WD |
40 | #include <asm/u-boot.h> |
41 | #include <asm/processor.h> | |
028ab6b5 | 42 | #include <command.h> |
99b0f0fd | 43 | #include <config.h> |
028ab6b5 | 44 | |
d87080b7 WD |
45 | DECLARE_GLOBAL_DATA_PTR; |
46 | ||
028ab6b5 | 47 | #define USE_CHAN1 \ |
6d0f6bcf | 48 | ((defined XPAR_UARTNS550_0_BASEADDR) && (defined CONFIG_SYS_INIT_CHAN1)) |
028ab6b5 | 49 | #define USE_CHAN2 \ |
6d0f6bcf | 50 | ((defined XPAR_UARTNS550_1_BASEADDR) && (defined CONFIG_SYS_INIT_CHAN2)) |
028ab6b5 WD |
51 | |
52 | #if USE_CHAN1 | |
53 | #include <ns16550.h> | |
54 | #endif | |
55 | ||
56 | #if USE_CHAN1 | |
57 | const NS16550_t COM_PORTS[] = { (NS16550_t) (XPAR_UARTNS550_0_BASEADDR + 3) | |
58 | #if USE_CHAN2 | |
59 | , (NS16550_t) (XPAR_UARTNS550_1_BASEADDR + 3) | |
60 | #endif | |
61 | }; | |
62 | #endif | |
63 | ||
64 | int | |
65 | serial_init(void) | |
66 | { | |
67 | #if USE_CHAN1 | |
028ab6b5 WD |
68 | int clock_divisor; |
69 | ||
70 | clock_divisor = XPAR_UARTNS550_0_CLOCK_FREQ_HZ / 16 / gd->baudrate; | |
71 | (void) NS16550_init(COM_PORTS[0], clock_divisor); | |
72 | #if USE_CHAN2 | |
73 | clock_divisor = XPAR_UARTNS550_1_CLOCK_FREQ_HZ / 16 / gd->baudrate; | |
74 | (void) NS16550_init(COM_PORTS[1], clock_divisor); | |
75 | #endif | |
76 | #endif | |
77 | return 0; | |
78 | ||
79 | } | |
80 | ||
81 | void | |
82 | serial_putc(const char c) | |
83 | { | |
84 | if (c == '\n') | |
6d0f6bcf | 85 | NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r'); |
028ab6b5 | 86 | |
6d0f6bcf | 87 | NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], c); |
028ab6b5 WD |
88 | } |
89 | ||
90 | int | |
91 | serial_getc(void) | |
92 | { | |
6d0f6bcf | 93 | return NS16550_getc(COM_PORTS[CONFIG_SYS_DUART_CHAN]); |
028ab6b5 WD |
94 | } |
95 | ||
96 | int | |
97 | serial_tstc(void) | |
98 | { | |
6d0f6bcf | 99 | return NS16550_tstc(COM_PORTS[CONFIG_SYS_DUART_CHAN]); |
028ab6b5 WD |
100 | } |
101 | ||
102 | void | |
103 | serial_setbrg(void) | |
104 | { | |
105 | #if USE_CHAN1 | |
028ab6b5 WD |
106 | int clock_divisor; |
107 | ||
108 | clock_divisor = XPAR_UARTNS550_0_CLOCK_FREQ_HZ / 16 / gd->baudrate; | |
109 | NS16550_reinit(COM_PORTS[0], clock_divisor); | |
110 | #if USE_CHAN2 | |
111 | clock_divisor = XPAR_UARTNS550_1_CLOCK_FREQ_HZ / 16 / gd->baudrate; | |
112 | NS16550_reinit(COM_PORTS[1], clock_divisor); | |
113 | #endif | |
114 | #endif | |
115 | } | |
116 | ||
117 | void | |
118 | serial_puts(const char *s) | |
119 | { | |
120 | while (*s) { | |
121 | serial_putc(*s++); | |
122 | } | |
123 | } | |
124 | ||
ab3abcba | 125 | #if defined(CONFIG_CMD_KGDB) |
028ab6b5 WD |
126 | void |
127 | kgdb_serial_init(void) | |
128 | { | |
129 | } | |
130 | ||
131 | void | |
132 | putDebugChar(int c) | |
133 | { | |
134 | serial_putc(c); | |
135 | } | |
136 | ||
137 | void | |
138 | putDebugStr(const char *str) | |
139 | { | |
140 | serial_puts(str); | |
141 | } | |
142 | ||
143 | int | |
144 | getDebugChar(void) | |
145 | { | |
146 | return serial_getc(); | |
147 | } | |
148 | ||
149 | void | |
150 | kgdb_interruptible(int yes) | |
151 | { | |
152 | return; | |
153 | } | |
d39b5741 | 154 | #endif |