1/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
2
3/*-
4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5 * Copyright (C) 1995, 1996 TooLs GmbH.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
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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.
56 */
57
58#include <sys/cdefs.h>
59__FBSDID("$FreeBSD: head/sys/dev/ofw/openfirm.c 171265 2007-07-06 00:47:44Z peter $");
60
61#include <sys/param.h>
62#include <sys/kernel.h>
63#include <sys/malloc.h>
64#include <sys/systm.h>
65
66#include <machine/stdarg.h>
67
68#include <dev/ofw/openfirm.h>
69
70MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
71
72static ihandle_t stdout;
73
74/* Initialiser */
75
76void
77OF_init(int (*openfirm)(void *))
78{
79 phandle_t chosen;
80
81 set_openfirm_callback(openfirm);
82 if ((chosen = OF_finddevice("/chosen")) == -1)
83 OF_exit();
84 if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1)
85 OF_exit();
86}
87
88void
89OF_printf(const char *fmt, ...)
90{
91 va_list va;
92 char buf[1024];
93
94 va_start(va, fmt);
95 vsprintf(buf, fmt, va);
96 OF_write(stdout, buf, strlen(buf));
97 va_end(va);
98}
99
100/*
101 * Generic functions
102 */
103
104/* Test to see if a service exists. */
105int
106OF_test(char *name)
107{
108 static struct {
109 cell_t name;
110 cell_t nargs;
111 cell_t nreturns;
112 cell_t service;
113 cell_t missing;
114 } args = {
115 (cell_t)"test",
116 1,
117 1,
118 };
119
120 args.service = (cell_t)name;
121 if (openfirmware(&args) == -1)
122 return (-1);
123 return (args.missing);
124}
125
126int
127OF_interpret(char *cmd, int nreturns, ...)
128{
129 va_list ap;
130 static struct {
131 cell_t name;
132 cell_t nargs;
133 cell_t nreturns;
134 cell_t slot[16];
135 } args = {
136 (cell_t)"interpret",
137 1,
138 };
139 cell_t status;
140 int i = 0;
141
142 va_start(ap, nreturns);
143 args.nreturns = ++nreturns;
144 args.slot[i++] = (cell_t)cmd;
145 while (i < 1)
146 args.slot[i++] = va_arg(ap, cell_t);
147 if (openfirmware(&args) == -1) {
148 va_end(ap);
149 return (-1);
150 }
151 status = args.slot[i++];
152 while (i < 1 + nreturns)
153 *va_arg(ap, cell_t *) = args.slot[i++];
154 va_end(ap);
155 return (status);
156}
157
158/* Return firmware millisecond count. */
159int
160OF_milliseconds()
161{
162 static struct {
163 cell_t name;
164 cell_t nargs;
165 cell_t nreturns;
166 cell_t ms;
167 } args = {
168 (cell_t)"milliseconds",
169 0,
170 1,
171 };
172
173 openfirmware(&args);
174 return (args.ms);
175}
176
177/*
178 * Device tree functions
179 */
180
181/* Return the next sibling of this node or 0. */
182phandle_t
183OF_peer(phandle_t node)
184{
185 static struct {
186 cell_t name;
187 cell_t nargs;
188 cell_t nreturns;
189 cell_t node;
190 cell_t next;
191 } args = {
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196
197 args.node = node;
198 if (openfirmware(&args) == -1)
199 return (-1);
200 return (args.next);
201}
202
203/* Return the first child of this node or 0. */
204phandle_t
205OF_child(phandle_t node)
206{
207 static struct {
208 cell_t name;
209 cell_t nargs;
210 cell_t nreturns;
211 cell_t node;
212 cell_t child;
213 } args = {
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218
219 args.node = node;
220 if (openfirmware(&args) == -1)
221 return (-1);
222 return (args.child);
223}
224
225/* Return the parent of this node or 0. */
226phandle_t
227OF_parent(phandle_t node)
228{
229 static struct {
230 cell_t name;
231 cell_t nargs;
232 cell_t nreturns;
233 cell_t node;
234 cell_t parent;
235 } args = {
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240
241 args.node = node;
242 if (openfirmware(&args) == -1)
243 return (-1);
244 return (args.parent);
245}
246
247/* Return the package handle that corresponds to an instance handle. */
248phandle_t
249OF_instance_to_package(ihandle_t instance)
250{
251 static struct {
252 cell_t name;
253 cell_t nargs;
254 cell_t nreturns;
255 cell_t instance;
256 cell_t package;
257 } args = {
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262
263 args.instance = instance;
264 if (openfirmware(&args) == -1)
265 return (-1);
266 return (args.package);
267}
268
269/* Get the length of a property of a package. */
270int
271OF_getproplen(phandle_t package, char *propname)
272{
273 static struct {
274 cell_t name;
275 cell_t nargs;
276 cell_t nreturns;
277 cell_t package;
278 cell_t propname;
279 cell_t proplen;
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286 args.package = package;
287 args.propname = (cell_t)propname;
288 if (openfirmware(&args) == -1)
289 return (-1);
290 return (args.proplen);
291}
292
293/* Get the value of a property of a package. */
294int
295OF_getprop(phandle_t package, char *propname, void *buf, int buflen)
296{
297 static struct {
298 cell_t name;
299 cell_t nargs;
300 cell_t nreturns;
301 cell_t package;
302 cell_t propname;
303 cell_t buf;
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313 args.propname = (cell_t)propname;
314 args.buf = (cell_t)buf;
315 args.buflen = buflen;
316 if (openfirmware(&args) == -1)
317 return (-1);
318 return (args.size);
319}
320
321/*
322 * Store the value of a property of a package into newly allocated memory
323 * (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
324 * single element, the number of elements is return in number.
325 */
326int
327OF_getprop_alloc(phandle_t package, char *propname, int elsz, void **buf)
328{
329 int len;
330
331 *buf = NULL;
332 if ((len = OF_getproplen(package, propname)) == -1 ||
333 len % elsz != 0)
334 return (-1);
335
336 *buf = malloc(len, M_OFWPROP, M_WAITOK);
337 if (OF_getprop(package, propname, *buf, len) == -1) {
338 free(*buf, M_OFWPROP);
339 *buf = NULL;
340 return (-1);
341 }
342 return (len / elsz);
343}
344
345/* Get the next property of a package. */
346int
347OF_nextprop(phandle_t package, char *previous, char *buf)
348{
349 static struct {
350 cell_t name;
351 cell_t nargs;
352 cell_t nreturns;
353 cell_t package;
354 cell_t previous;
355 cell_t buf;
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365 args.buf = (cell_t)buf;
366 if (openfirmware(&args) == -1)
367 return (-1);
368 return (args.flag);
369}
370
371/* Set the value of a property of a package. */
372/* XXX Has a bug on FirePower */
373int
374OF_setprop(phandle_t package, char *propname, void *buf, int len)
375{
376 static struct {
377 cell_t name;
378 cell_t nargs;
379 cell_t nreturns;
380 cell_t package;
381 cell_t propname;
382 cell_t buf;
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393 args.buf = (cell_t)buf;
394 args.len = len;
395 if (openfirmware(&args) == -1)
396 return (-1);
397 return (args.size);
398}
399
400/* Convert a device specifier to a fully qualified pathname. */
401int
402OF_canon(const char *device, char *buf, int len)
403{
404 static struct {
405 cell_t name;
406 cell_t nargs;
407 cell_t nreturns;
408 cell_t device;
409 cell_t buf;
410 cell_t len;
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419 args.buf = (cell_t)buf;
420 args.len = len;
421 if (openfirmware(&args) == -1)
422 return (-1);
423 return (args.size);
424}
425
426/* Return a package handle for the specified device. */
427phandle_t
428OF_finddevice(const char *device)
429{
430 static struct {
431 cell_t name;
432 cell_t nargs;
433 cell_t nreturns;
434 cell_t device;
435 cell_t package;
436 } args = {
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441
442 args.device = (cell_t)device;
443 if (openfirmware(&args) == -1)
444 return (-1);
445 return (args.package);
446}
447
448/* Return the fully qualified pathname corresponding to an instance. */
449int
450OF_instance_to_path(ihandle_t instance, char *buf, int len)
451{
452 static struct {
453 cell_t name;
454 cell_t nargs;
455 cell_t nreturns;
456 cell_t instance;
457 cell_t buf;
458 cell_t len;
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467 args.buf = (cell_t)buf;
468 args.len = len;
469 if (openfirmware(&args) == -1)
470 return (-1);
471 return (args.size);
472}
473
474/* Return the fully qualified pathname corresponding to a package. */
475int
476OF_package_to_path(phandle_t package, char *buf, int len)
477{
478 static struct {
479 cell_t name;
480 cell_t nargs;
481 cell_t nreturns;
482 cell_t package;
483 cell_t buf;
484 cell_t len;
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493 args.buf = (cell_t)buf;
494 args.len = len;
495 if (openfirmware(&args) == -1)
496 return (-1);
497 return (args.size);
498}
499
500/* Call the method in the scope of a given instance. */
501int
502OF_call_method(char *method, ihandle_t instance, int nargs, int nreturns, ...)
503{
504 va_list ap;
505 static struct {
506 cell_t name;
507 cell_t nargs;
508 cell_t nreturns;
509 cell_t method;
510 cell_t instance;
511 cell_t args_n_results[12];
512 } args = {
513 (cell_t)"call-method",
514 2,
515 1,
516 };
517 cell_t *cp;
518 int n;
519
520 if (nargs > 6)
521 return (-1);
522 args.nargs = nargs + 2;
523 args.nreturns = nreturns + 1;
524 args.method = (cell_t)method;
525 args.instance = instance;
526 va_start(ap, nreturns);
527 for (cp = args.args_n_results + (n = nargs); --n >= 0;)
528 *--cp = va_arg(ap, cell_t);
529 if (openfirmware(&args) == -1)
530 return (-1);
531 if (args.args_n_results[nargs])
532 return (args.args_n_results[nargs]);
533 for (cp = args.args_n_results + nargs + (n = args.nreturns); --n > 0;)
534 *va_arg(ap, cell_t *) = *--cp;
535 va_end(ap);
536 return (0);
537}
538
539/*
540 * Device I/O functions
541 */
542
543/* Open an instance for a device. */
544ihandle_t
545OF_open(char *device)
546{
547 static struct {
548 cell_t name;
549 cell_t nargs;
550 cell_t nreturns;
551 cell_t device;
552 cell_t instance;
553 } args = {
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559 args.device = (cell_t)device;
560 if (openfirmware(&args) == -1 || args.instance == 0) {
561 return (-1);
562 }
563 return (args.instance);
564}
565
566/* Close an instance. */
567void
568OF_close(ihandle_t instance)
569{
570 static struct {
571 cell_t name;
572 cell_t nargs;
573 cell_t nreturns;
574 cell_t instance;
575 } args = {
576 (cell_t)"close",
577 1,
578 };
579
580 args.instance = instance;
581 openfirmware(&args);
582}
583
584/* Read from an instance. */
585int
586OF_read(ihandle_t instance, void *addr, int len)
587{
588 static struct {
589 cell_t name;
590 cell_t nargs;
591 cell_t nreturns;
592 cell_t instance;
593 cell_t addr;
594 cell_t len;
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604 args.len = len;
605 if (openfirmware(&args) == -1)
606 return (-1);
607
608 return (args.actual);
609}
610
611/* Write to an instance. */
612int
613OF_write(ihandle_t instance, void *addr, int len)
614{
615 static struct {
616 cell_t name;
617 cell_t nargs;
618 cell_t nreturns;
619 cell_t instance;
620 cell_t addr;
621 cell_t len;
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630 args.addr = (cell_t)addr;
631 args.len = len;
632 if (openfirmware(&args) == -1)
633 return (-1);
634 return (args.actual);
635}
636
637/* Seek to a position. */
638int
639OF_seek(ihandle_t instance, u_int64_t pos)
640{
641 static struct {
642 cell_t name;
643 cell_t nargs;
644 cell_t nreturns;
645 cell_t instance;
646 cell_t poshi;
647 cell_t poslo;
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660 return (args.status);
661}
662
663/*
664 * Memory functions
665 */
666
667/* Claim an area of memory. */
668void *
669OF_claim(void *virt, u_int size, u_int align)
670{
671 static struct {
672 cell_t name;
673 cell_t nargs;
674 cell_t nreturns;
675 cell_t virt;
676 cell_t size;
677 cell_t align;
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686 args.size = size;
687 args.align = align;
688 if (openfirmware(&args) == -1)
689 return ((void *)-1);
690 return ((void *)args.baseaddr);
691}
692
693/* Release an area of memory. */
694void
695OF_release(void *virt, u_int size)
696{
697 static struct {
698 cell_t name;
699 cell_t nargs;
700 cell_t nreturns;
701 cell_t virt;
702 cell_t size;
703 } args = {
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709 args.size = size;
710 openfirmware(&args);
711}
712
713/*
714 * Control transfer functions
715 */
716
717/* Reset the system and call "boot <bootspec>". */
718void
719OF_boot(char *bootspec)
720{
721 static struct {
722 cell_t name;
723 cell_t nargs;
724 cell_t nreturns;
725 cell_t bootspec;
726 } args = {
727 (cell_t)"boot",
728 1,
729 };
730
731 args.bootspec = (cell_t)bootspec;
732 openfirmware(&args);
733 for (;;) /* just in case */
734 ;
735}
736
737/* Suspend and drop back to the Open Firmware interface. */
738void
739OF_enter()
740{
741 static struct {
742 cell_t name;
743 cell_t nargs;
744 cell_t nreturns;
745 } args = {
746 (cell_t)"enter",
747 };
748
749 openfirmware(&args);
750 /* We may come back. */
751}
752
753/* Shut down and drop back to the Open Firmware interface. */
754void
755OF_exit()
756{
757 static struct {
758 cell_t name;
759 cell_t nargs;
760 cell_t nreturns;
761 } args = {
762 (cell_t)"exit",
763 };
764
765 openfirmware(&args);
766 for (;;) /* just in case */
767 ;
768}
769
770/* Free <size> bytes starting at <virt>, then call <entry> with <arg>. */
771#if 0
772void
773OF_chain(void *virt, u_int size, void (*entry)(), void *arg, u_int len)
774{
775 static struct {
776 cell_t name;
777 cell_t nargs;
778 cell_t nreturns;
779 cell_t virt;
780 cell_t size;
781 cell_t entry;
782 cell_t arg;
783 cell_t len;
784 } args = {
785 (cell_t)"chain",
786 5,
787 };
788
789 args.virt = (cell_t)virt;
790 args.size = size;
791 args.entry = (cell_t)entry;
792 args.arg = (cell_t)arg;
793 args.len = len;
794 openfirmware(&args);
795}
796#else
797void
798OF_chain(void *virt, u_int size,
799 void (*entry)(void *, u_int, void *, void *, u_int), void *arg, u_int len)
800{
801 /*
802 * This is a REALLY dirty hack till the firmware gets this going
803 */
804#if 0
805 if (size > 0)
806 OF_release(virt, size);
807#endif
808 entry(0, 0, openfirmware, arg, len);
809}
810#endif
2
3/*-
4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5 * Copyright (C) 1995, 1996 TooLs GmbH.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
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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.
56 */
57
58#include <sys/cdefs.h>
59__FBSDID("$FreeBSD: head/sys/dev/ofw/openfirm.c 171265 2007-07-06 00:47:44Z peter $");
60
61#include <sys/param.h>
62#include <sys/kernel.h>
63#include <sys/malloc.h>
64#include <sys/systm.h>
65
66#include <machine/stdarg.h>
67
68#include <dev/ofw/openfirm.h>
69
70MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
71
72static ihandle_t stdout;
73
74/* Initialiser */
75
76void
77OF_init(int (*openfirm)(void *))
78{
79 phandle_t chosen;
80
81 set_openfirm_callback(openfirm);
82 if ((chosen = OF_finddevice("/chosen")) == -1)
83 OF_exit();
84 if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1)
85 OF_exit();
86}
87
88void
89OF_printf(const char *fmt, ...)
90{
91 va_list va;
92 char buf[1024];
93
94 va_start(va, fmt);
95 vsprintf(buf, fmt, va);
96 OF_write(stdout, buf, strlen(buf));
97 va_end(va);
98}
99
100/*
101 * Generic functions
102 */
103
104/* Test to see if a service exists. */
105int
106OF_test(char *name)
107{
108 static struct {
109 cell_t name;
110 cell_t nargs;
111 cell_t nreturns;
112 cell_t service;
113 cell_t missing;
114 } args = {
115 (cell_t)"test",
116 1,
117 1,
118 };
119
120 args.service = (cell_t)name;
121 if (openfirmware(&args) == -1)
122 return (-1);
123 return (args.missing);
124}
125
126int
127OF_interpret(char *cmd, int nreturns, ...)
128{
129 va_list ap;
130 static struct {
131 cell_t name;
132 cell_t nargs;
133 cell_t nreturns;
134 cell_t slot[16];
135 } args = {
136 (cell_t)"interpret",
137 1,
138 };
139 cell_t status;
140 int i = 0;
141
142 va_start(ap, nreturns);
143 args.nreturns = ++nreturns;
144 args.slot[i++] = (cell_t)cmd;
145 while (i < 1)
146 args.slot[i++] = va_arg(ap, cell_t);
147 if (openfirmware(&args) == -1) {
148 va_end(ap);
149 return (-1);
150 }
151 status = args.slot[i++];
152 while (i < 1 + nreturns)
153 *va_arg(ap, cell_t *) = args.slot[i++];
154 va_end(ap);
155 return (status);
156}
157
158/* Return firmware millisecond count. */
159int
160OF_milliseconds()
161{
162 static struct {
163 cell_t name;
164 cell_t nargs;
165 cell_t nreturns;
166 cell_t ms;
167 } args = {
168 (cell_t)"milliseconds",
169 0,
170 1,
171 };
172
173 openfirmware(&args);
174 return (args.ms);
175}
176
177/*
178 * Device tree functions
179 */
180
181/* Return the next sibling of this node or 0. */
182phandle_t
183OF_peer(phandle_t node)
184{
185 static struct {
186 cell_t name;
187 cell_t nargs;
188 cell_t nreturns;
189 cell_t node;
190 cell_t next;
191 } args = {
--- 4 unchanged lines hidden (view full) ---
196
197 args.node = node;
198 if (openfirmware(&args) == -1)
199 return (-1);
200 return (args.next);
201}
202
203/* Return the first child of this node or 0. */
204phandle_t
205OF_child(phandle_t node)
206{
207 static struct {
208 cell_t name;
209 cell_t nargs;
210 cell_t nreturns;
211 cell_t node;
212 cell_t child;
213 } args = {
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218
219 args.node = node;
220 if (openfirmware(&args) == -1)
221 return (-1);
222 return (args.child);
223}
224
225/* Return the parent of this node or 0. */
226phandle_t
227OF_parent(phandle_t node)
228{
229 static struct {
230 cell_t name;
231 cell_t nargs;
232 cell_t nreturns;
233 cell_t node;
234 cell_t parent;
235 } args = {
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240
241 args.node = node;
242 if (openfirmware(&args) == -1)
243 return (-1);
244 return (args.parent);
245}
246
247/* Return the package handle that corresponds to an instance handle. */
248phandle_t
249OF_instance_to_package(ihandle_t instance)
250{
251 static struct {
252 cell_t name;
253 cell_t nargs;
254 cell_t nreturns;
255 cell_t instance;
256 cell_t package;
257 } args = {
--- 4 unchanged lines hidden (view full) ---
262
263 args.instance = instance;
264 if (openfirmware(&args) == -1)
265 return (-1);
266 return (args.package);
267}
268
269/* Get the length of a property of a package. */
270int
271OF_getproplen(phandle_t package, char *propname)
272{
273 static struct {
274 cell_t name;
275 cell_t nargs;
276 cell_t nreturns;
277 cell_t package;
278 cell_t propname;
279 cell_t proplen;
--- 6 unchanged lines hidden (view full) ---
286 args.package = package;
287 args.propname = (cell_t)propname;
288 if (openfirmware(&args) == -1)
289 return (-1);
290 return (args.proplen);
291}
292
293/* Get the value of a property of a package. */
294int
295OF_getprop(phandle_t package, char *propname, void *buf, int buflen)
296{
297 static struct {
298 cell_t name;
299 cell_t nargs;
300 cell_t nreturns;
301 cell_t package;
302 cell_t propname;
303 cell_t buf;
--- 9 unchanged lines hidden (view full) ---
313 args.propname = (cell_t)propname;
314 args.buf = (cell_t)buf;
315 args.buflen = buflen;
316 if (openfirmware(&args) == -1)
317 return (-1);
318 return (args.size);
319}
320
321/*
322 * Store the value of a property of a package into newly allocated memory
323 * (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
324 * single element, the number of elements is return in number.
325 */
326int
327OF_getprop_alloc(phandle_t package, char *propname, int elsz, void **buf)
328{
329 int len;
330
331 *buf = NULL;
332 if ((len = OF_getproplen(package, propname)) == -1 ||
333 len % elsz != 0)
334 return (-1);
335
336 *buf = malloc(len, M_OFWPROP, M_WAITOK);
337 if (OF_getprop(package, propname, *buf, len) == -1) {
338 free(*buf, M_OFWPROP);
339 *buf = NULL;
340 return (-1);
341 }
342 return (len / elsz);
343}
344
345/* Get the next property of a package. */
346int
347OF_nextprop(phandle_t package, char *previous, char *buf)
348{
349 static struct {
350 cell_t name;
351 cell_t nargs;
352 cell_t nreturns;
353 cell_t package;
354 cell_t previous;
355 cell_t buf;
--- 9 unchanged lines hidden (view full) ---
365 args.buf = (cell_t)buf;
366 if (openfirmware(&args) == -1)
367 return (-1);
368 return (args.flag);
369}
370
371/* Set the value of a property of a package. */
372/* XXX Has a bug on FirePower */
373int
374OF_setprop(phandle_t package, char *propname, void *buf, int len)
375{
376 static struct {
377 cell_t name;
378 cell_t nargs;
379 cell_t nreturns;
380 cell_t package;
381 cell_t propname;
382 cell_t buf;
--- 10 unchanged lines hidden (view full) ---
393 args.buf = (cell_t)buf;
394 args.len = len;
395 if (openfirmware(&args) == -1)
396 return (-1);
397 return (args.size);
398}
399
400/* Convert a device specifier to a fully qualified pathname. */
401int
402OF_canon(const char *device, char *buf, int len)
403{
404 static struct {
405 cell_t name;
406 cell_t nargs;
407 cell_t nreturns;
408 cell_t device;
409 cell_t buf;
410 cell_t len;
--- 8 unchanged lines hidden (view full) ---
419 args.buf = (cell_t)buf;
420 args.len = len;
421 if (openfirmware(&args) == -1)
422 return (-1);
423 return (args.size);
424}
425
426/* Return a package handle for the specified device. */
427phandle_t
428OF_finddevice(const char *device)
429{
430 static struct {
431 cell_t name;
432 cell_t nargs;
433 cell_t nreturns;
434 cell_t device;
435 cell_t package;
436 } args = {
--- 4 unchanged lines hidden (view full) ---
441
442 args.device = (cell_t)device;
443 if (openfirmware(&args) == -1)
444 return (-1);
445 return (args.package);
446}
447
448/* Return the fully qualified pathname corresponding to an instance. */
449int
450OF_instance_to_path(ihandle_t instance, char *buf, int len)
451{
452 static struct {
453 cell_t name;
454 cell_t nargs;
455 cell_t nreturns;
456 cell_t instance;
457 cell_t buf;
458 cell_t len;
--- 8 unchanged lines hidden (view full) ---
467 args.buf = (cell_t)buf;
468 args.len = len;
469 if (openfirmware(&args) == -1)
470 return (-1);
471 return (args.size);
472}
473
474/* Return the fully qualified pathname corresponding to a package. */
475int
476OF_package_to_path(phandle_t package, char *buf, int len)
477{
478 static struct {
479 cell_t name;
480 cell_t nargs;
481 cell_t nreturns;
482 cell_t package;
483 cell_t buf;
484 cell_t len;
--- 8 unchanged lines hidden (view full) ---
493 args.buf = (cell_t)buf;
494 args.len = len;
495 if (openfirmware(&args) == -1)
496 return (-1);
497 return (args.size);
498}
499
500/* Call the method in the scope of a given instance. */
501int
502OF_call_method(char *method, ihandle_t instance, int nargs, int nreturns, ...)
503{
504 va_list ap;
505 static struct {
506 cell_t name;
507 cell_t nargs;
508 cell_t nreturns;
509 cell_t method;
510 cell_t instance;
511 cell_t args_n_results[12];
512 } args = {
513 (cell_t)"call-method",
514 2,
515 1,
516 };
517 cell_t *cp;
518 int n;
519
520 if (nargs > 6)
521 return (-1);
522 args.nargs = nargs + 2;
523 args.nreturns = nreturns + 1;
524 args.method = (cell_t)method;
525 args.instance = instance;
526 va_start(ap, nreturns);
527 for (cp = args.args_n_results + (n = nargs); --n >= 0;)
528 *--cp = va_arg(ap, cell_t);
529 if (openfirmware(&args) == -1)
530 return (-1);
531 if (args.args_n_results[nargs])
532 return (args.args_n_results[nargs]);
533 for (cp = args.args_n_results + nargs + (n = args.nreturns); --n > 0;)
534 *va_arg(ap, cell_t *) = *--cp;
535 va_end(ap);
536 return (0);
537}
538
539/*
540 * Device I/O functions
541 */
542
543/* Open an instance for a device. */
544ihandle_t
545OF_open(char *device)
546{
547 static struct {
548 cell_t name;
549 cell_t nargs;
550 cell_t nreturns;
551 cell_t device;
552 cell_t instance;
553 } args = {
--- 5 unchanged lines hidden (view full) ---
559 args.device = (cell_t)device;
560 if (openfirmware(&args) == -1 || args.instance == 0) {
561 return (-1);
562 }
563 return (args.instance);
564}
565
566/* Close an instance. */
567void
568OF_close(ihandle_t instance)
569{
570 static struct {
571 cell_t name;
572 cell_t nargs;
573 cell_t nreturns;
574 cell_t instance;
575 } args = {
576 (cell_t)"close",
577 1,
578 };
579
580 args.instance = instance;
581 openfirmware(&args);
582}
583
584/* Read from an instance. */
585int
586OF_read(ihandle_t instance, void *addr, int len)
587{
588 static struct {
589 cell_t name;
590 cell_t nargs;
591 cell_t nreturns;
592 cell_t instance;
593 cell_t addr;
594 cell_t len;
--- 9 unchanged lines hidden (view full) ---
604 args.len = len;
605 if (openfirmware(&args) == -1)
606 return (-1);
607
608 return (args.actual);
609}
610
611/* Write to an instance. */
612int
613OF_write(ihandle_t instance, void *addr, int len)
614{
615 static struct {
616 cell_t name;
617 cell_t nargs;
618 cell_t nreturns;
619 cell_t instance;
620 cell_t addr;
621 cell_t len;
--- 8 unchanged lines hidden (view full) ---
630 args.addr = (cell_t)addr;
631 args.len = len;
632 if (openfirmware(&args) == -1)
633 return (-1);
634 return (args.actual);
635}
636
637/* Seek to a position. */
638int
639OF_seek(ihandle_t instance, u_int64_t pos)
640{
641 static struct {
642 cell_t name;
643 cell_t nargs;
644 cell_t nreturns;
645 cell_t instance;
646 cell_t poshi;
647 cell_t poslo;
--- 12 unchanged lines hidden (view full) ---
660 return (args.status);
661}
662
663/*
664 * Memory functions
665 */
666
667/* Claim an area of memory. */
668void *
669OF_claim(void *virt, u_int size, u_int align)
670{
671 static struct {
672 cell_t name;
673 cell_t nargs;
674 cell_t nreturns;
675 cell_t virt;
676 cell_t size;
677 cell_t align;
--- 8 unchanged lines hidden (view full) ---
686 args.size = size;
687 args.align = align;
688 if (openfirmware(&args) == -1)
689 return ((void *)-1);
690 return ((void *)args.baseaddr);
691}
692
693/* Release an area of memory. */
694void
695OF_release(void *virt, u_int size)
696{
697 static struct {
698 cell_t name;
699 cell_t nargs;
700 cell_t nreturns;
701 cell_t virt;
702 cell_t size;
703 } args = {
--- 5 unchanged lines hidden (view full) ---
709 args.size = size;
710 openfirmware(&args);
711}
712
713/*
714 * Control transfer functions
715 */
716
717/* Reset the system and call "boot <bootspec>". */
718void
719OF_boot(char *bootspec)
720{
721 static struct {
722 cell_t name;
723 cell_t nargs;
724 cell_t nreturns;
725 cell_t bootspec;
726 } args = {
727 (cell_t)"boot",
728 1,
729 };
730
731 args.bootspec = (cell_t)bootspec;
732 openfirmware(&args);
733 for (;;) /* just in case */
734 ;
735}
736
737/* Suspend and drop back to the Open Firmware interface. */
738void
739OF_enter()
740{
741 static struct {
742 cell_t name;
743 cell_t nargs;
744 cell_t nreturns;
745 } args = {
746 (cell_t)"enter",
747 };
748
749 openfirmware(&args);
750 /* We may come back. */
751}
752
753/* Shut down and drop back to the Open Firmware interface. */
754void
755OF_exit()
756{
757 static struct {
758 cell_t name;
759 cell_t nargs;
760 cell_t nreturns;
761 } args = {
762 (cell_t)"exit",
763 };
764
765 openfirmware(&args);
766 for (;;) /* just in case */
767 ;
768}
769
770/* Free <size> bytes starting at <virt>, then call <entry> with <arg>. */
771#if 0
772void
773OF_chain(void *virt, u_int size, void (*entry)(), void *arg, u_int len)
774{
775 static struct {
776 cell_t name;
777 cell_t nargs;
778 cell_t nreturns;
779 cell_t virt;
780 cell_t size;
781 cell_t entry;
782 cell_t arg;
783 cell_t len;
784 } args = {
785 (cell_t)"chain",
786 5,
787 };
788
789 args.virt = (cell_t)virt;
790 args.size = size;
791 args.entry = (cell_t)entry;
792 args.arg = (cell_t)arg;
793 args.len = len;
794 openfirmware(&args);
795}
796#else
797void
798OF_chain(void *virt, u_int size,
799 void (*entry)(void *, u_int, void *, void *, u_int), void *arg, u_int len)
800{
801 /*
802 * This is a REALLY dirty hack till the firmware gets this going
803 */
804#if 0
805 if (size > 0)
806 OF_release(virt, size);
807#endif
808 entry(0, 0, openfirmware, arg, len);
809}
810#endif