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f8cac651 WD |
1 | /* |
2 | * (C) Copyright 2000 | |
3 | * Rob Taylor, Flying Pig Systems. robt@flyingpig.com. | |
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 <common.h> | |
25 | #include "ns16550.h" | |
26 | ||
d87080b7 WD |
27 | DECLARE_GLOBAL_DATA_PTR; |
28 | ||
f8cac651 WD |
29 | #if CONFIG_CONS_INDEX == 1 |
30 | static struct NS16550 *console = | |
6d0f6bcf | 31 | (struct NS16550 *) (CONFIG_SYS_EUMB_ADDR + 0x4500); |
f8cac651 WD |
32 | #elif CONFIG_CONS_INDEX == 2 |
33 | static struct NS16550 *console = | |
6d0f6bcf | 34 | (struct NS16550 *) (CONFIG_SYS_EUMB_ADDR + 0x4500); |
f8cac651 WD |
35 | #else |
36 | #error no valid console defined | |
37 | #endif | |
38 | ||
39 | extern ulong get_bus_freq (ulong); | |
40 | ||
41 | int serial_init (void) | |
42 | { | |
f8cac651 WD |
43 | int clock_divisor = gd->bus_clk / 16 / gd->baudrate; |
44 | ||
45 | NS16550_init (CONFIG_CONS_INDEX - 1, clock_divisor); | |
46 | ||
47 | return (0); | |
48 | } | |
49 | ||
50 | void serial_putc (const char c) | |
51 | { | |
52 | if (c == '\n') { | |
53 | serial_putc ('\r'); | |
54 | } | |
55 | NS16550_putc (console, c); | |
56 | } | |
57 | ||
58 | void serial_puts (const char *s) | |
59 | { | |
60 | while (*s) { | |
61 | serial_putc (*s++); | |
62 | } | |
63 | } | |
64 | ||
65 | ||
66 | int serial_getc (void) | |
67 | { | |
68 | return NS16550_getc (console); | |
69 | } | |
70 | ||
71 | int serial_tstc (void) | |
72 | { | |
73 | return NS16550_tstc (console); | |
74 | } | |
75 | ||
76 | void serial_setbrg (void) | |
77 | { | |
f8cac651 WD |
78 | int clock_divisor = get_bus_freq (0) / 16 / gd->baudrate; |
79 | ||
80 | NS16550_reinit (console, clock_divisor); | |
81 | } |