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3a473b2a WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. | |
4 | * | |
5 | * modified for marvell db64360 eval board by | |
6 | * Ingo Assmus <ingo.assmus@keymile.com> | |
7 | * | |
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | /* | |
28 | * serial.c - serial support for the gal ev board | |
29 | */ | |
30 | ||
31 | /* supports both the 16650 duart and the MPSC */ | |
32 | ||
33 | #include <common.h> | |
34 | #include <command.h> | |
35 | #include "../include/memory.h" | |
36 | #include "serial.h" | |
37 | ||
38 | #ifdef CONFIG_DB64360 | |
39 | #include "../db64360/mpsc.h" | |
40 | #endif | |
41 | ||
42 | #ifdef CONFIG_DB64460 | |
43 | #include "../db64460/mpsc.h" | |
44 | #endif | |
45 | ||
46 | #include "ns16550.h" | |
47 | ||
d87080b7 WD |
48 | DECLARE_GLOBAL_DATA_PTR; |
49 | ||
3a473b2a WD |
50 | #ifdef CONFIG_MPSC |
51 | ||
52 | ||
53 | int serial_init (void) | |
54 | { | |
6d0f6bcf | 55 | #if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2) |
3a473b2a WD |
56 | int clock_divisor = 230400 / gd->baudrate; |
57 | #endif | |
58 | ||
59 | mpsc_init (gd->baudrate); | |
60 | ||
61 | /* init the DUART chans so that KGDB in the kernel can use them */ | |
6d0f6bcf | 62 | #ifdef CONFIG_SYS_INIT_CHAN1 |
3a473b2a WD |
63 | NS16550_reinit (COM_PORTS[0], clock_divisor); |
64 | #endif | |
6d0f6bcf | 65 | #ifdef CONFIG_SYS_INIT_CHAN2 |
3a473b2a WD |
66 | NS16550_reinit (COM_PORTS[1], clock_divisor); |
67 | #endif | |
68 | return (0); | |
69 | } | |
70 | ||
71 | void serial_putc (const char c) | |
72 | { | |
73 | if (c == '\n') | |
74 | mpsc_putchar ('\r'); | |
75 | ||
76 | mpsc_putchar (c); | |
77 | } | |
78 | ||
79 | int serial_getc (void) | |
80 | { | |
81 | return mpsc_getchar (); | |
82 | } | |
83 | ||
84 | int serial_tstc (void) | |
85 | { | |
86 | return mpsc_test_char (); | |
87 | } | |
88 | ||
89 | void serial_setbrg (void) | |
90 | { | |
3a473b2a WD |
91 | galbrg_set_baudrate (CONFIG_MPSC_PORT, gd->baudrate); |
92 | } | |
93 | ||
94 | #else /* ! CONFIG_MPSC */ | |
95 | ||
96 | int serial_init (void) | |
97 | { | |
3a473b2a WD |
98 | int clock_divisor = 230400 / gd->baudrate; |
99 | ||
6d0f6bcf | 100 | #ifdef CONFIG_SYS_INIT_CHAN1 |
3a473b2a WD |
101 | (void) NS16550_init (0, clock_divisor); |
102 | #endif | |
6d0f6bcf | 103 | #ifdef CONFIG_SYS_INIT_CHAN2 |
3a473b2a WD |
104 | (void) NS16550_init (1, clock_divisor); |
105 | #endif | |
106 | return (0); | |
107 | } | |
108 | ||
109 | void serial_putc (const char c) | |
110 | { | |
111 | if (c == '\n') | |
6d0f6bcf | 112 | NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r'); |
3a473b2a | 113 | |
6d0f6bcf | 114 | NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], c); |
3a473b2a WD |
115 | } |
116 | ||
117 | int serial_getc (void) | |
118 | { | |
6d0f6bcf | 119 | return NS16550_getc (COM_PORTS[CONFIG_SYS_DUART_CHAN]); |
3a473b2a WD |
120 | } |
121 | ||
122 | int serial_tstc (void) | |
123 | { | |
6d0f6bcf | 124 | return NS16550_tstc (COM_PORTS[CONFIG_SYS_DUART_CHAN]); |
3a473b2a WD |
125 | } |
126 | ||
127 | void serial_setbrg (void) | |
128 | { | |
3a473b2a WD |
129 | int clock_divisor = 230400 / gd->baudrate; |
130 | ||
6d0f6bcf | 131 | #ifdef CONFIG_SYS_INIT_CHAN1 |
3a473b2a WD |
132 | NS16550_reinit (COM_PORTS[0], clock_divisor); |
133 | #endif | |
6d0f6bcf | 134 | #ifdef CONFIG_SYS_INIT_CHAN2 |
3a473b2a WD |
135 | NS16550_reinit (COM_PORTS[1], clock_divisor); |
136 | #endif | |
137 | } | |
138 | ||
139 | #endif /* CONFIG_MPSC */ | |
140 | ||
141 | void serial_puts (const char *s) | |
142 | { | |
143 | while (*s) { | |
144 | serial_putc (*s++); | |
145 | } | |
146 | } | |
147 | ||
fcec2eb9 | 148 | #if defined(CONFIG_CMD_KGDB) |
3a473b2a WD |
149 | void kgdb_serial_init (void) |
150 | { | |
151 | } | |
152 | ||
153 | void putDebugChar (int c) | |
154 | { | |
155 | serial_putc (c); | |
156 | } | |
157 | ||
158 | void putDebugStr (const char *str) | |
159 | { | |
160 | serial_puts (str); | |
161 | } | |
162 | ||
163 | int getDebugChar (void) | |
164 | { | |
165 | return serial_getc (); | |
166 | } | |
167 | ||
168 | void kgdb_interruptible (int yes) | |
169 | { | |
170 | return; | |
171 | } | |
77a31854 | 172 | #endif |