1 /* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5 * Copyright (C) 1995, 1996 TooLs GmbH.
8 * Redistribution and use in source and binary forms, with or without
9 * 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.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by TooLs GmbH.
19 * 4. The name of TooLs GmbH may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 * Copyright (C) 2000 Benno Rice.
35 * All rights reserved.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
46 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
50 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
51 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
52 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
53 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
54 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
55 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 #include <sys/cdefs.h>
59 __FBSDID("$FreeBSD$");
61 #include <sys/param.h>
62 #include <sys/kernel.h>
63 #include <sys/malloc.h>
64 #include <sys/systm.h>
66 #include <machine/stdarg.h>
68 #include <dev/ofw/ofwvar.h>
69 #include <dev/ofw/openfirm.h>
73 static void OF_putchar(int c, void *arg);
75 MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
77 static ihandle_t stdout;
79 static ofw_def_t *ofw_def_impl;
81 static struct ofw_kobj ofw_kernel_obj;
82 static struct kobj_ops ofw_kernel_kops;
85 * OFW install routines. Highest priority wins, equal priority also
86 * overrides allowing last-set to win.
88 SET_DECLARE(ofw_set, ofw_def_t);
91 OF_install(char *name, int prio)
93 ofw_def_t *ofwp, **ofwpp;
94 static int curr_prio = 0;
97 * Try and locate the OFW kobj corresponding to the name.
99 SET_FOREACH(ofwpp, ofw_set) {
103 !strcmp(ofwp->name, name) &&
116 OF_init(void *cookie)
120 ofw_obj = &ofw_kernel_obj;
122 * Take care of compiling the selected class, and
123 * then statically initialize the OFW object.
125 kobj_class_compile_static(ofw_def_impl, &ofw_kernel_kops);
126 kobj_init_static((kobj_t)ofw_obj, ofw_def_impl);
128 OFW_INIT(ofw_obj, cookie);
130 if ((chosen = OF_finddevice("/chosen")) == -1)
132 if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1)
137 OF_putchar(int c, void *arg __unused)
143 OF_write(stdout, &cbuf, 1);
147 OF_write(stdout, &cbuf, 1);
151 OF_printf(const char *fmt, ...)
156 (void)kvprintf(fmt, OF_putchar, NULL, 10, va);
164 /* Test to see if a service exists. */
166 OF_test(const char *name)
169 return (OFW_TEST(ofw_obj, name));
173 OF_interpret(const char *cmd, int nreturns, ...)
176 unsigned long slots[16];
180 status = OFW_INTERPRET(ofw_obj, cmd, nreturns, slots);
184 va_start(ap, nreturns);
186 *va_arg(ap, cell_t *) = slots[i++];
193 * Device tree functions
196 /* Return the next sibling of this node or 0. */
198 OF_peer(phandle_t node)
201 return (OFW_PEER(ofw_obj, node));
204 /* Return the first child of this node or 0. */
206 OF_child(phandle_t node)
209 return (OFW_CHILD(ofw_obj, node));
212 /* Return the parent of this node or 0. */
214 OF_parent(phandle_t node)
217 return (OFW_PARENT(ofw_obj, node));
220 /* Return the package handle that corresponds to an instance handle. */
222 OF_instance_to_package(ihandle_t instance)
225 return (OFW_INSTANCE_TO_PACKAGE(ofw_obj, instance));
228 /* Get the length of a property of a package. */
230 OF_getproplen(phandle_t package, const char *propname)
233 return (OFW_GETPROPLEN(ofw_obj, package, propname));
236 /* Get the value of a property of a package. */
238 OF_getprop(phandle_t package, const char *propname, void *buf, size_t buflen)
241 return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen));
245 * Resursively search the node and its parent for the given property, working
246 * downward from the node to the device tree root. Returns the value of the
250 OF_searchprop(phandle_t node, const char *propname, void *buf, size_t len)
254 for (; node != 0; node = OF_parent(node))
255 if ((rv = OF_getprop(node, propname, buf, len)) != -1)
261 * Store the value of a property of a package into newly allocated memory
262 * (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
263 * single element, the number of elements is return in number.
266 OF_getprop_alloc(phandle_t package, const char *propname, int elsz, void **buf)
271 if ((len = OF_getproplen(package, propname)) == -1 ||
275 *buf = malloc(len, M_OFWPROP, M_WAITOK);
276 if (OF_getprop(package, propname, *buf, len) == -1) {
277 free(*buf, M_OFWPROP);
284 /* Get the next property of a package. */
286 OF_nextprop(phandle_t package, const char *previous, char *buf, size_t size)
289 return (OFW_NEXTPROP(ofw_obj, package, previous, buf, size));
292 /* Set the value of a property of a package. */
294 OF_setprop(phandle_t package, const char *propname, const void *buf, size_t len)
297 return (OFW_SETPROP(ofw_obj, package, propname, buf,len));
300 /* Convert a device specifier to a fully qualified pathname. */
302 OF_canon(const char *device, char *buf, size_t len)
305 return (OFW_CANON(ofw_obj, device, buf, len));
308 /* Return a package handle for the specified device. */
310 OF_finddevice(const char *device)
313 return (OFW_FINDDEVICE(ofw_obj, device));
316 /* Return the fully qualified pathname corresponding to an instance. */
318 OF_instance_to_path(ihandle_t instance, char *buf, size_t len)
321 return (OFW_INSTANCE_TO_PATH(ofw_obj, instance, buf, len));
324 /* Return the fully qualified pathname corresponding to a package. */
326 OF_package_to_path(phandle_t package, char *buf, size_t len)
329 return (OFW_PACKAGE_TO_PATH(ofw_obj, package, buf, len));
332 /* Call the method in the scope of a given instance. */
334 OF_call_method(const char *method, ihandle_t instance, int nargs, int nreturns,
338 unsigned long args_n_results[12];
343 va_start(ap, nreturns);
344 for (n = 0; n < nargs; n++)
345 args_n_results[n] = va_arg(ap, unsigned long);
347 status = OFW_CALL_METHOD(ofw_obj, instance, method, nargs, nreturns,
352 for (; n < nargs + nreturns; n++)
353 *va_arg(ap, unsigned long *) = args_n_results[n];
359 * Device I/O functions
362 /* Open an instance for a device. */
364 OF_open(const char *device)
367 return (OFW_OPEN(ofw_obj, device));
370 /* Close an instance. */
372 OF_close(ihandle_t instance)
375 OFW_CLOSE(ofw_obj, instance);
378 /* Read from an instance. */
380 OF_read(ihandle_t instance, void *addr, size_t len)
383 return (OFW_READ(ofw_obj, instance, addr, len));
386 /* Write to an instance. */
388 OF_write(ihandle_t instance, const void *addr, size_t len)
391 return (OFW_WRITE(ofw_obj, instance, addr, len));
394 /* Seek to a position. */
396 OF_seek(ihandle_t instance, uint64_t pos)
399 return (OFW_SEEK(ofw_obj, instance, pos));
406 /* Claim an area of memory. */
408 OF_claim(void *virt, size_t size, u_int align)
411 return (OFW_CLAIM(ofw_obj, virt, size, align));
414 /* Release an area of memory. */
416 OF_release(void *virt, size_t size)
419 OFW_RELEASE(ofw_obj, virt, size);
423 * Control transfer functions
426 /* Suspend and drop back to the Open Firmware interface. */
434 /* Shut down and drop back to the Open Firmware interface. */
439 /* Should not return */
442 for (;;) /* just in case */