2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
30 #include "bootstrap.h"
34 * Point (dev) at an allocated device specifier for the device matching the
35 * path in (devspec). If it contains an explicit device specification,
36 * use that. If not, use the default device.
39 ofw_getdev(void **vdev, const char *devspec, const char **path)
41 struct devdesc **dev = (struct devdesc **)vdev;
45 * If it looks like this is just a path and no device, go with the
48 if (devspec == NULL || strpbrk(devspec, ":@") == NULL) {
49 rv = devparse(dev, getenv("currdev"), NULL);
50 if (rv == 0 && path != NULL)
56 * Try to parse the device name off the beginning of the devspec
58 return (devparse(dev, devspec, path));
62 * Search the OFW (path) for a node that's of (want_type).
65 ofw_path_to_handle(const char *ofwpath, const char *want_type, const char **path)
73 for (p = s = ofwpath; *s != '\0'; p = s) {
74 if ((s = strchr(p + 1, '/')) == NULL)
77 if (len >= sizeof(name))
78 return ((phandle_t)-1);
79 bcopy(ofwpath, name, len);
81 if ((handle = OF_finddevice(name)) == -1)
83 if (OF_getprop(handle, "device_type", type, sizeof(type)) == -1)
85 if (strcmp(want_type, type) == 0) {
90 return ((phandle_t)-1);
94 ofw_common_parsedev(struct devdesc **dev, const char *devspec, const char **path,
98 struct ofw_devdesc *idev;
100 if (ofw_path_to_handle(devspec, ofwtype, &rem_path) == -1)
102 idev = malloc(sizeof(struct ofw_devdesc));
104 printf("ofw_parsedev: malloc failed\n");
107 strlcpy(idev->d_path, devspec, min(rem_path - devspec + 1,
108 sizeof(idev->d_path)));