2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2003 Marcel Moolenaar
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
36 #include <machine/bus.h>
38 #include <dev/uart/uart.h>
39 #include <dev/uart/uart_cpu.h>
41 #include <arm/xscale/ixp425/ixp425reg.h>
42 #include <arm/xscale/ixp425/ixp425var.h>
44 bus_space_tag_t uart_bus_space_io;
45 bus_space_tag_t uart_bus_space_mem;
48 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
50 return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
54 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
56 uint32_t i, ivar, vaddr;
59 * Scan the hints. The IXP425 only have 2 serial ports, so only
62 for (i = 0; i < 2; i++) {
63 if (resource_int_value("uart", i, "flags", &ivar))
65 if (devtype == UART_DEV_CONSOLE && !UART_FLAGS_CONSOLE(ivar))
67 if (devtype == UART_DEV_DBGPORT && !UART_FLAGS_DBGPORT(ivar))
70 * We have a possible device. Make sure it's enabled and
71 * that we have an I/O port.
73 if (resource_int_value("uart", i, "disabled", &ivar) == 0 &&
76 if (resource_int_value("uart", i, "addr", &ivar) != 0 ||
79 /* Got it. Fill in the instance and return it. */
80 di->ops = uart_getops(&uart_ns8250_class);
82 di->bas.bst = &ixp425_a4x_bs_tag;
84 di->bas.rclk = IXP425_UART_FREQ;
85 di->baudrate = 115200;
88 di->parity = UART_PARITY_NONE;
89 uart_bus_space_io = NULL;
90 uart_bus_space_mem = &ixp425_a4x_bs_tag;
92 getvbase(ivar, IXP425_REG_SIZE, &vaddr);