1 /*-
2 * Copyright (c) 2003 Marcel Moolenaar
3 * Copyright (c) 2006 M. Warner Losh
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include "opt_platform.h"
30 #include "opt_uart.h"
31
32 #ifndef FDT
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/bus.h>
39 #include <sys/cons.h>
40 #include <sys/lock.h>
41 #include <sys/mutex.h>
42 #include <machine/bus.h>
43
44 #include <dev/uart/uart.h>
45 #include <dev/uart/uart_bus.h>
46 #include <dev/uart/uart_cpu.h>
47
48 #include <arm/at91/at91var.h>
49
50 bus_space_tag_t uart_bus_space_io;
51 bus_space_tag_t uart_bus_space_mem;
52
53 extern struct bus_space at91_bs_tag;
54 extern struct uart_class at91_usart_class;
55
56 int
uart_cpu_eqres(struct uart_bas * b1,struct uart_bas * b2)57 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
58 {
59 return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
60 }
61
62 int
uart_cpu_getdev(int devtype,struct uart_devinfo * di)63 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
64 {
65 struct uart_class *class;
66
67 class = &at91_usart_class;
68 if (class->uc_rclk == 0 && at91_master_clock != 0)
69 class->uc_rclk = at91_master_clock;
70 di->ops = uart_getops(class);
71 di->bas.chan = 0;
72 di->bas.bst = &at91_bs_tag;
73 /*
74 * XXX: Not pretty, but will work because we map the needed addresses
75 * early. At least we probed this so that the console will work on
76 * all flavors of Atmel we can detect.
77 */
78 di->bas.bsh = soc_info.dbgu_base;
79 di->baudrate = 115200;
80 di->bas.regshft = 0;
81 di->bas.rclk = 0;
82 di->databits = 8;
83 di->stopbits = 1;
84 di->parity = UART_PARITY_NONE;
85 uart_bus_space_io = &at91_bs_tag;
86 uart_bus_space_mem = NULL;
87 /* Check the environment for overrides */
88 uart_getenv(devtype, di, class);
89 return (0);
90 }
91 #endif
92