1 /*-
2 * Copyright (c) 2003 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "opt_uart.h"
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD: releng/6.3/sys/arm/at91/uart_cpu_at91rm9200usart.c 159907 2006-06-23 23:35:36Z cognet $");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/bus.h>
35 #include <sys/cons.h>
36 #include <machine/bus.h>
37
38 #include <dev/uart/uart.h>
39 #include <dev/uart/uart_cpu.h>
40
41 #include <arm/at91/at91rm92reg.h>
42
43 bus_space_tag_t uart_bus_space_io;
44 bus_space_tag_t uart_bus_space_mem;
45
46 extern struct uart_ops at91_usart_ops;
47 extern struct bus_space at91_bs_tag;
48
49 int
50 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
51 {
52 return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
53 }
54
55 int
56 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
57 {
58 di->ops = at91_usart_ops;
59 di->bas.chan = 0;
60 di->bas.bst = &at91_bs_tag;
61 /*
62 * XXX: Not pretty, but will work because we map VA == PA early
63 * for the last 1MB of memory.
64 */
65 #ifdef SKYEYE_WORKAROUNDS
66 di->bas.bsh = AT91RM92_BASE + AT91RM92_USART0_BASE;
67 di->baudrate = 38400;
68 #else
69 di->bas.bsh = AT91RM92_BASE + AT91RM92_SYS_BASE + DBGU;
70 di->baudrate = 115200;
71 #endif
72 di->bas.regshft = 0;
73 di->bas.rclk = 0;
74 di->databits = 8;
75 di->stopbits = 1;
76 di->parity = UART_PARITY_NONE;
77 uart_bus_space_io = &at91_bs_tag;
78 uart_bus_space_mem = NULL;
79 /* Check the environment for overrides */
80 if (uart_getenv(devtype, di) == 0)
81 return (0);
82 return (0);
83 }
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