2 * Copyright (c) 2006 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
35 #include <machine/bus.h>
36 #include <machine/ofw_machdep.h>
38 #include <dev/ofw/openfirm.h>
39 #include <dev/uart/uart.h>
40 #include <dev/uart/uart_cpu.h>
42 bus_space_tag_t uart_bus_space_io = &bs_le_tag;
43 bus_space_tag_t uart_bus_space_mem = &bs_le_tag;
46 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
49 return ((pmap_kextract(b1->bsh) == pmap_kextract(b2->bsh)) ? 1 : 0);
53 ofw_get_uart_console(phandle_t opts, phandle_t *result, const char *inputdev,
54 const char *outputdev)
59 if (OF_getprop(opts, inputdev, buf, sizeof(buf)) == -1)
61 input = OF_finddevice(buf);
64 if (OF_getprop(opts, outputdev, buf, sizeof(buf)) == -1)
66 if (OF_finddevice(buf) != input)
74 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
77 struct uart_class *class;
78 phandle_t input, opts;
81 class = &uart_z8530_class;
85 if ((opts = OF_finddevice("/options")) == -1)
88 case UART_DEV_CONSOLE:
89 if (ofw_get_uart_console(opts, &input, "input-device",
92 * At least some G5 Xserves require that we
93 * probe input-device-1 as well
96 if (ofw_get_uart_console(opts, &input, "input-device-1",
101 case UART_DEV_DBGPORT:
102 if (!getenv_string("hw.uart.dbgport", buf, sizeof(buf)))
104 input = OF_finddevice(buf);
112 if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1)
114 if (strcmp(buf, "serial") != 0)
116 if (OF_getprop(input, "name", buf, sizeof(buf)) == -1)
119 if (strcmp(buf, "ch-a") == 0) {
120 class = &uart_z8530_class;
123 } else if (strcmp(buf,"serial") == 0) {
124 class = &uart_ns8250_class;
130 error = OF_decode_addr(input, 0, &di->bas.bst, &di->bas.bsh);
134 di->ops = uart_getops(class);
136 if (OF_getprop(input, "clock-frequency", &di->bas.rclk,
137 sizeof(di->bas.rclk)) == -1)
138 di->bas.rclk = 230400;
139 if (OF_getprop(input, "current-speed", &di->baudrate,
140 sizeof(di->baudrate)) == -1)
145 di->parity = UART_PARITY_NONE;