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f8cac651 WD |
1 | /* |
2 | * (C) Copyright 2002 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include <config.h> | |
25 | #include <common.h> | |
26 | ||
27 | #include "sconsole.h" | |
28 | ||
d87080b7 WD |
29 | DECLARE_GLOBAL_DATA_PTR; |
30 | ||
f8cac651 WD |
31 | void (*sconsole_putc) (char) = 0; |
32 | void (*sconsole_puts) (const char *) = 0; | |
33 | int (*sconsole_getc) (void) = 0; | |
34 | int (*sconsole_tstc) (void) = 0; | |
35 | void (*sconsole_setbrg) (void) = 0; | |
36 | ||
37 | int serial_init (void) | |
38 | { | |
f8cac651 WD |
39 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; |
40 | ||
41 | sb->pos = 0; | |
42 | sb->size = 0; | |
43 | sb->baud = gd->baudrate; | |
6d0f6bcf | 44 | sb->max_size = CONFIG_SYS_SCONSOLE_SIZE - sizeof (sconsole_buffer_t); |
f8cac651 WD |
45 | |
46 | return (0); | |
47 | } | |
48 | ||
49 | void serial_putc (char c) | |
50 | { | |
51 | if (sconsole_putc) { | |
52 | (*sconsole_putc) (c); | |
53 | } else { | |
54 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
55 | ||
56 | if (c) { | |
57 | sb->data[sb->pos++] = c; | |
58 | if (sb->pos == sb->max_size) { | |
59 | sb->pos = 0; | |
60 | } | |
61 | if (sb->size < sb->max_size) { | |
62 | sb->size++; | |
63 | } | |
64 | } | |
65 | } | |
66 | } | |
67 | ||
68 | void serial_puts (const char *s) | |
69 | { | |
70 | if (sconsole_puts) { | |
71 | (*sconsole_puts) (s); | |
72 | } else { | |
73 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
74 | ||
75 | while (*s) { | |
76 | sb->data[sb->pos++] = *s++; | |
77 | if (sb->pos == sb->max_size) { | |
78 | sb->pos = 0; | |
79 | } | |
80 | if (sb->size < sb->max_size) { | |
81 | sb->size++; | |
82 | } | |
83 | } | |
84 | } | |
85 | } | |
86 | ||
87 | int serial_getc (void) | |
88 | { | |
89 | if (sconsole_getc) { | |
90 | return (*sconsole_getc) (); | |
91 | } else { | |
92 | return 0; | |
93 | } | |
94 | } | |
95 | ||
96 | int serial_tstc (void) | |
97 | { | |
98 | if (sconsole_tstc) { | |
99 | return (*sconsole_tstc) (); | |
100 | } else { | |
101 | return 0; | |
102 | } | |
103 | } | |
104 | ||
105 | void serial_setbrg (void) | |
106 | { | |
f8cac651 WD |
107 | if (sconsole_setbrg) { |
108 | (*sconsole_setbrg) (); | |
109 | } else { | |
110 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
111 | ||
112 | sb->baud = gd->baudrate; | |
113 | } | |
114 | } | |
115 | ||
116 | int sconsole_get_baudrate (void) | |
117 | { | |
118 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
119 | ||
120 | return sb->baud; | |
121 | } | |
122 | ||
123 | void sconsole_flush (void) | |
124 | { | |
125 | if (sconsole_putc) { | |
126 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
127 | unsigned int end = sb->pos < sb->size | |
128 | ? sb->pos + sb->max_size - sb->size | |
129 | : sb->pos - sb->size; | |
130 | ||
131 | while (sb->size) { | |
132 | (*sconsole_putc) (sb->data[end++]); | |
133 | if (end == sb->max_size) { | |
134 | end = 0; | |
135 | } | |
136 | sb->size--; | |
137 | } | |
138 | } | |
139 | } |