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