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>
28 __FBSDID("$FreeBSD$");
33 #include "bootstrap.h"
37 static int uboot_parsedev(struct uboot_devdesc **dev, const char *devspec,
41 * Point (dev) at an allocated device specifier for the device matching the
42 * path in (devspec). If it contains an explicit device specification,
43 * use that. If not, use the default device.
46 uboot_getdev(void **vdev, const char *devspec, const char **path)
48 struct uboot_devdesc **dev = (struct uboot_devdesc **)vdev;
52 * If it looks like this is just a path and no
53 * device, go with the current device.
55 if ((devspec == NULL) || (devspec[0] == '/') ||
56 (strchr(devspec, ':') == NULL)) {
58 if (((rv = uboot_parsedev(dev, getenv("currdev"), NULL)) == 0)
65 * Try to parse the device name off the beginning of the devspec.
67 return (uboot_parsedev(dev, devspec, path));
71 * Point (dev) at an allocated device specifier matching the string version
72 * at the beginning of (devspec). Return a pointer to the remaining
75 * In all cases, the beginning of (devspec) is compared to the names
76 * of known devices in the device switch, and then any following text
77 * is parsed according to the rules applied to the device type.
79 * For disk-type devices, the syntax is:
81 * disk<unit>[<partition>]:
85 uboot_parsedev(struct uboot_devdesc **dev, const char *devspec,
88 struct uboot_devdesc *idev;
94 /* minimum length check */
95 if (strlen(devspec) < 2)
98 /* look for a device that matches */
99 for (i = 0, dv = NULL; devsw[i] != NULL; i++) {
100 if (!strncmp(devspec, devsw[i]->dv_name,
101 strlen(devsw[i]->dv_name))) {
108 idev = malloc(sizeof(struct uboot_devdesc));
110 np = (devspec + strlen(dv->dv_name));
112 switch(dv->dv_type) {
116 #ifdef LOADER_DISK_SUPPORT
118 err = disk_parsedev((struct disk_devdesc *)idev, np, path);
127 if (*np && (*np != ':')) {
128 /* get unit number if present */
129 unit = strtol(np, &cp, 0);
135 if (*cp && (*cp != ':')) {
139 idev->dd.d_unit = unit;
142 *path = (*cp == 0) ? cp : cp + 1;
164 uboot_fmtdev(void *vdev)
166 struct uboot_devdesc *dev = (struct uboot_devdesc *)vdev;
167 static char buf[128];
169 switch(dev->dd.d_dev->dv_type) {
171 strcpy(buf, "(no device)");
175 #ifdef LOADER_DISK_SUPPORT
176 return (disk_fmtdev(vdev));
180 sprintf(buf, "%s%d:", dev->dd.d_dev->dv_name, dev->dd.d_unit);
187 * Set currdev to suit the value being supplied in (value).
190 uboot_setcurrdev(struct env_var *ev, int flags, const void *value)
192 struct uboot_devdesc *ncurr;
195 if ((rv = uboot_parsedev(&ncurr, value, NULL)) != 0)
199 return (mount_currdev(ev, flags, value));