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60fbe254 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 | ||
29 | void (*sconsole_putc) (char) = 0; | |
30 | void (*sconsole_puts) (const char *) = 0; | |
31 | int (*sconsole_getc) (void) = 0; | |
32 | int (*sconsole_tstc) (void) = 0; | |
33 | void (*sconsole_setbrg) (void) = 0; | |
34 | ||
35 | int serial_init (void) | |
36 | { | |
37 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
38 | ||
39 | sb->pos = 0; | |
40 | sb->size = 0; | |
6d0f6bcf | 41 | sb->max_size = CONFIG_SYS_SCONSOLE_SIZE - sizeof (sconsole_buffer_t); |
60fbe254 WD |
42 | |
43 | return (0); | |
44 | } | |
45 | ||
46 | void serial_putc (char c) | |
47 | { | |
48 | if (sconsole_putc) { | |
49 | (*sconsole_putc) (c); | |
50 | } else { | |
51 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
52 | ||
53 | if (c) { | |
54 | sb->data[sb->pos++] = c; | |
55 | if (sb->pos == sb->max_size) { | |
56 | sb->pos = 0; | |
57 | } | |
58 | if (sb->size < sb->max_size) { | |
59 | sb->size++; | |
60 | } | |
61 | } | |
62 | } | |
63 | } | |
64 | ||
65 | void serial_puts (const char *s) | |
66 | { | |
67 | if (sconsole_puts) { | |
68 | (*sconsole_puts) (s); | |
69 | } else { | |
70 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
71 | ||
72 | while (*s) { | |
73 | sb->data[sb->pos++] = *s++; | |
74 | if (sb->pos == sb->max_size) { | |
75 | sb->pos = 0; | |
76 | } | |
77 | if (sb->size < sb->max_size) { | |
78 | sb->size++; | |
79 | } | |
80 | } | |
81 | } | |
82 | } | |
83 | ||
84 | int serial_getc (void) | |
85 | { | |
86 | if (sconsole_getc) { | |
87 | return (*sconsole_getc) (); | |
88 | } else { | |
89 | return 0; | |
90 | } | |
91 | } | |
92 | ||
93 | int serial_tstc (void) | |
94 | { | |
95 | if (sconsole_tstc) { | |
96 | return (*sconsole_tstc) (); | |
97 | } else { | |
98 | return 0; | |
99 | } | |
100 | } | |
101 | ||
102 | void serial_setbrg (void) | |
103 | { | |
104 | if (sconsole_setbrg) { | |
105 | (*sconsole_setbrg) (); | |
106 | } | |
107 | } | |
108 | ||
109 | void sconsole_flush (void) | |
110 | { | |
111 | if (sconsole_putc) { | |
112 | sconsole_buffer_t *sb = SCONSOLE_BUFFER; | |
113 | unsigned int end = sb->pos < sb->size | |
114 | ? sb->pos + sb->max_size - sb->size | |
115 | : sb->pos - sb->size; | |
116 | ||
117 | while (sb->size) { | |
118 | (*sconsole_putc) (sb->data[end++]); | |
119 | if (end == sb->max_size) { | |
120 | end = 0; | |
121 | } | |
122 | sb->size--; | |
123 | } | |
124 | } | |
125 | } |