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609cdb12b9
Most of these already treat it as a proper bool, i.e. using true/false. Also fix-up callers of OF_install(). No functional change intended. Reviewed by: andrew, emaste Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D45733
847 lines
19 KiB
C
847 lines
19 KiB
C
/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (C) 2000 Benno Rice.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include "opt_platform.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/queue.h>
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#include <sys/systm.h>
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#include <sys/endian.h>
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#include <machine/stdarg.h>
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#include <dev/ofw/ofwvar.h>
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#include <dev/ofw/openfirm.h>
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#include "ofw_if.h"
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static void OF_putchar(int c, void *arg);
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MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
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static ihandle_t stdout;
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static ofw_def_t *ofw_def_impl = NULL;
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static ofw_t ofw_obj;
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static struct ofw_kobj ofw_kernel_obj;
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static struct kobj_ops ofw_kernel_kops;
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struct xrefinfo {
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phandle_t xref;
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phandle_t node;
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device_t dev;
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SLIST_ENTRY(xrefinfo) next_entry;
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};
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static SLIST_HEAD(, xrefinfo) xreflist = SLIST_HEAD_INITIALIZER(xreflist);
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static struct mtx xreflist_lock;
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static bool xref_init_done;
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#define FIND_BY_XREF 0
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#define FIND_BY_NODE 1
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#define FIND_BY_DEV 2
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/*
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* xref-phandle-device lookup helper routines.
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*
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* As soon as we are able to use malloc(), walk the node tree and build a list
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* of info that cross-references node handles, xref handles, and device_t
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* instances. This list exists primarily to allow association of a device_t
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* with an xref handle, but it is also used to speed up translation between xref
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* and node handles. Before malloc() is available we have to recursively search
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* the node tree each time we want to translate between a node and xref handle.
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* Afterwards we can do the translations by searching this much shorter list.
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*/
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static void
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xrefinfo_create(phandle_t node)
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{
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struct xrefinfo * xi;
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phandle_t child, xref;
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/*
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* Recursively descend from parent, looking for nodes with a property
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* named either "phandle", "ibm,phandle", or "linux,phandle". For each
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* such node found create an entry in the xreflist.
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*/
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for (child = OF_child(node); child != 0; child = OF_peer(child)) {
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xrefinfo_create(child);
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if (OF_getencprop(child, "phandle", &xref, sizeof(xref)) ==
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-1 && OF_getencprop(child, "ibm,phandle", &xref,
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sizeof(xref)) == -1 && OF_getencprop(child,
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"linux,phandle", &xref, sizeof(xref)) == -1)
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continue;
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xi = malloc(sizeof(*xi), M_OFWPROP, M_WAITOK | M_ZERO);
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xi->node = child;
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xi->xref = xref;
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SLIST_INSERT_HEAD(&xreflist, xi, next_entry);
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}
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}
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static void
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xrefinfo_init(void *unsed)
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{
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/*
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* There is no locking during this init because it runs much earlier
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* than any of the clients/consumers of the xref list data, but we do
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* initialize the mutex that will be used for access later.
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*/
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mtx_init(&xreflist_lock, "OF xreflist lock", NULL, MTX_DEF);
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xrefinfo_create(OF_peer(0));
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xref_init_done = true;
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}
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SYSINIT(xrefinfo, SI_SUB_KMEM, SI_ORDER_ANY, xrefinfo_init, NULL);
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static struct xrefinfo *
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xrefinfo_find(uintptr_t key, int find_by)
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{
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struct xrefinfo *rv, *xi;
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rv = NULL;
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mtx_lock(&xreflist_lock);
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SLIST_FOREACH(xi, &xreflist, next_entry) {
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if ((find_by == FIND_BY_XREF && (phandle_t)key == xi->xref) ||
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(find_by == FIND_BY_NODE && (phandle_t)key == xi->node) ||
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(find_by == FIND_BY_DEV && key == (uintptr_t)xi->dev)) {
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rv = xi;
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break;
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}
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}
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mtx_unlock(&xreflist_lock);
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return (rv);
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}
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static struct xrefinfo *
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xrefinfo_add(phandle_t node, phandle_t xref, device_t dev)
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{
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struct xrefinfo *xi;
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xi = malloc(sizeof(*xi), M_OFWPROP, M_WAITOK);
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xi->node = node;
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xi->xref = xref;
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xi->dev = dev;
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mtx_lock(&xreflist_lock);
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SLIST_INSERT_HEAD(&xreflist, xi, next_entry);
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mtx_unlock(&xreflist_lock);
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return (xi);
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}
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/*
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* OFW install routines. Highest priority wins, equal priority also
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* overrides allowing last-set to win.
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*/
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SET_DECLARE(ofw_set, ofw_def_t);
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bool
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OF_install(char *name, int prio)
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{
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ofw_def_t *ofwp, **ofwpp;
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static int curr_prio = 0;
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/* Allow OF layer to be uninstalled */
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if (name == NULL) {
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ofw_def_impl = NULL;
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return (false);
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}
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/*
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* Try and locate the OFW kobj corresponding to the name.
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*/
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SET_FOREACH(ofwpp, ofw_set) {
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ofwp = *ofwpp;
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if (ofwp->name &&
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!strcmp(ofwp->name, name) &&
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prio >= curr_prio) {
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curr_prio = prio;
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ofw_def_impl = ofwp;
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return (true);
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}
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}
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return (false);
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}
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/* Initializer */
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int
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OF_init(void *cookie)
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{
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phandle_t chosen;
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int rv;
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if (ofw_def_impl == NULL)
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return (-1);
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ofw_obj = &ofw_kernel_obj;
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/*
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* Take care of compiling the selected class, and
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* then statically initialize the OFW object.
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*/
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kobj_class_compile_static(ofw_def_impl, &ofw_kernel_kops);
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kobj_init_static((kobj_t)ofw_obj, ofw_def_impl);
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rv = OFW_INIT(ofw_obj, cookie);
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if ((chosen = OF_finddevice("/chosen")) != -1)
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if (OF_getencprop(chosen, "stdout", &stdout,
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sizeof(stdout)) == -1)
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stdout = -1;
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return (rv);
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}
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static void
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OF_putchar(int c, void *arg __unused)
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{
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char cbuf;
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if (c == '\n') {
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cbuf = '\r';
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OF_write(stdout, &cbuf, 1);
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}
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cbuf = c;
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OF_write(stdout, &cbuf, 1);
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}
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void
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OF_printf(const char *fmt, ...)
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{
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va_list va;
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va_start(va, fmt);
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(void)kvprintf(fmt, OF_putchar, NULL, 10, va);
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va_end(va);
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}
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/*
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* Generic functions
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*/
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/* Test to see if a service exists. */
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int
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OF_test(const char *name)
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{
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if (ofw_def_impl == NULL)
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return (-1);
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return (OFW_TEST(ofw_obj, name));
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}
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int
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OF_interpret(const char *cmd, int nreturns, ...)
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{
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va_list ap;
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cell_t slots[16];
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int i = 0;
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int status;
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if (ofw_def_impl == NULL)
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return (-1);
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status = OFW_INTERPRET(ofw_obj, cmd, nreturns, slots);
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if (status == -1)
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return (status);
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va_start(ap, nreturns);
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while (i < nreturns)
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*va_arg(ap, cell_t *) = slots[i++];
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va_end(ap);
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return (status);
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}
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/*
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* Device tree functions
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*/
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/* Return the next sibling of this node or 0. */
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phandle_t
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OF_peer(phandle_t node)
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{
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if (ofw_def_impl == NULL)
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return (0);
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return (OFW_PEER(ofw_obj, node));
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}
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/* Return the first child of this node or 0. */
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phandle_t
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OF_child(phandle_t node)
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{
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if (ofw_def_impl == NULL)
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return (0);
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return (OFW_CHILD(ofw_obj, node));
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}
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/* Return the parent of this node or 0. */
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phandle_t
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OF_parent(phandle_t node)
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{
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if (ofw_def_impl == NULL)
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return (0);
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return (OFW_PARENT(ofw_obj, node));
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}
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/* Return the package handle that corresponds to an instance handle. */
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phandle_t
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OF_instance_to_package(ihandle_t instance)
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{
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if (ofw_def_impl == NULL)
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return (-1);
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return (OFW_INSTANCE_TO_PACKAGE(ofw_obj, instance));
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}
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/* Get the length of a property of a package. */
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ssize_t
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OF_getproplen(phandle_t package, const char *propname)
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{
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if (ofw_def_impl == NULL)
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return (-1);
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return (OFW_GETPROPLEN(ofw_obj, package, propname));
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}
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/* Check existence of a property of a package. */
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int
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OF_hasprop(phandle_t package, const char *propname)
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{
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return (OF_getproplen(package, propname) >= 0 ? 1 : 0);
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}
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/* Get the value of a property of a package. */
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ssize_t
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OF_getprop(phandle_t package, const char *propname, void *buf, size_t buflen)
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{
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if (ofw_def_impl == NULL)
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return (-1);
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return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen));
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}
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ssize_t
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OF_getencprop(phandle_t node, const char *propname, pcell_t *buf, size_t len)
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{
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ssize_t retval;
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int i;
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KASSERT(len % 4 == 0, ("Need a multiple of 4 bytes"));
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retval = OF_getprop(node, propname, buf, len);
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if (retval <= 0)
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return (retval);
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for (i = 0; i < len/4; i++)
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buf[i] = be32toh(buf[i]);
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return (retval);
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}
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/*
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* Recursively search the node and its parent for the given property, working
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* downward from the node to the device tree root. Returns the value of the
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* first match.
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*/
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ssize_t
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OF_searchprop(phandle_t node, const char *propname, void *buf, size_t len)
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{
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ssize_t rv;
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for (; node != 0; node = OF_parent(node))
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if ((rv = OF_getprop(node, propname, buf, len)) != -1)
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return (rv);
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return (-1);
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}
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ssize_t
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OF_searchencprop(phandle_t node, const char *propname, pcell_t *buf, size_t len)
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{
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ssize_t rv;
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for (; node != 0; node = OF_parent(node))
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if ((rv = OF_getencprop(node, propname, buf, len)) != -1)
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return (rv);
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return (-1);
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}
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/*
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* Store the value of a property of a package into newly allocated memory
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* (using the M_OFWPROP malloc pool and M_WAITOK).
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*/
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ssize_t
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OF_getprop_alloc(phandle_t package, const char *propname, void **buf)
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{
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int len;
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*buf = NULL;
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if ((len = OF_getproplen(package, propname)) == -1)
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return (-1);
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if (len > 0) {
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*buf = malloc(len, M_OFWPROP, M_WAITOK);
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if (OF_getprop(package, propname, *buf, len) == -1) {
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free(*buf, M_OFWPROP);
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*buf = NULL;
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return (-1);
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}
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}
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return (len);
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}
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/*
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* Store the value of a property of a package into newly allocated memory
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* (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
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* single element, the number of elements is return in number.
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*/
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ssize_t
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OF_getprop_alloc_multi(phandle_t package, const char *propname, int elsz, void **buf)
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{
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int len;
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*buf = NULL;
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if ((len = OF_getproplen(package, propname)) == -1 ||
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len % elsz != 0)
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return (-1);
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if (len > 0) {
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*buf = malloc(len, M_OFWPROP, M_WAITOK);
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if (OF_getprop(package, propname, *buf, len) == -1) {
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free(*buf, M_OFWPROP);
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*buf = NULL;
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return (-1);
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}
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}
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return (len / elsz);
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}
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ssize_t
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OF_getencprop_alloc(phandle_t package, const char *name, void **buf)
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{
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ssize_t ret;
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ret = OF_getencprop_alloc_multi(package, name, sizeof(pcell_t),
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buf);
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if (ret < 0)
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return (ret);
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else
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return (ret * sizeof(pcell_t));
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}
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ssize_t
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OF_getencprop_alloc_multi(phandle_t package, const char *name, int elsz,
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void **buf)
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{
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ssize_t retval;
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pcell_t *cell;
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int i;
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retval = OF_getprop_alloc_multi(package, name, elsz, buf);
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if (retval == -1)
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return (-1);
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cell = *buf;
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for (i = 0; i < retval * elsz / 4; i++)
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cell[i] = be32toh(cell[i]);
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return (retval);
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}
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/* Free buffer allocated by OF_getencprop_alloc or OF_getprop_alloc */
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void OF_prop_free(void *buf)
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{
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free(buf, M_OFWPROP);
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}
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/* Get the next property of a package. */
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int
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OF_nextprop(phandle_t package, const char *previous, char *buf, size_t size)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_NEXTPROP(ofw_obj, package, previous, buf, size));
|
|
}
|
|
|
|
/* Set the value of a property of a package. */
|
|
int
|
|
OF_setprop(phandle_t package, const char *propname, const void *buf, size_t len)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_SETPROP(ofw_obj, package, propname, buf,len));
|
|
}
|
|
|
|
/* Convert a device specifier to a fully qualified pathname. */
|
|
ssize_t
|
|
OF_canon(const char *device, char *buf, size_t len)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_CANON(ofw_obj, device, buf, len));
|
|
}
|
|
|
|
/* Return a package handle for the specified device. */
|
|
phandle_t
|
|
OF_finddevice(const char *device)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_FINDDEVICE(ofw_obj, device));
|
|
}
|
|
|
|
/* Return the fully qualified pathname corresponding to an instance. */
|
|
ssize_t
|
|
OF_instance_to_path(ihandle_t instance, char *buf, size_t len)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_INSTANCE_TO_PATH(ofw_obj, instance, buf, len));
|
|
}
|
|
|
|
/* Return the fully qualified pathname corresponding to a package. */
|
|
ssize_t
|
|
OF_package_to_path(phandle_t package, char *buf, size_t len)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_PACKAGE_TO_PATH(ofw_obj, package, buf, len));
|
|
}
|
|
|
|
/* Look up effective phandle (see FDT/PAPR spec) */
|
|
static phandle_t
|
|
OF_child_xref_phandle(phandle_t parent, phandle_t xref)
|
|
{
|
|
phandle_t child, rxref;
|
|
|
|
/*
|
|
* Recursively descend from parent, looking for a node with a property
|
|
* named either "phandle", "ibm,phandle", or "linux,phandle" that
|
|
* matches the xref we are looking for.
|
|
*/
|
|
|
|
for (child = OF_child(parent); child != 0; child = OF_peer(child)) {
|
|
rxref = OF_child_xref_phandle(child, xref);
|
|
if (rxref != -1)
|
|
return (rxref);
|
|
|
|
if (OF_getencprop(child, "phandle", &rxref, sizeof(rxref)) ==
|
|
-1 && OF_getencprop(child, "ibm,phandle", &rxref,
|
|
sizeof(rxref)) == -1 && OF_getencprop(child,
|
|
"linux,phandle", &rxref, sizeof(rxref)) == -1)
|
|
continue;
|
|
|
|
if (rxref == xref)
|
|
return (child);
|
|
}
|
|
|
|
return (-1);
|
|
}
|
|
|
|
phandle_t
|
|
OF_node_from_xref(phandle_t xref)
|
|
{
|
|
struct xrefinfo *xi;
|
|
phandle_t node;
|
|
|
|
if (xref_init_done) {
|
|
if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL)
|
|
return (xref);
|
|
return (xi->node);
|
|
}
|
|
|
|
if ((node = OF_child_xref_phandle(OF_peer(0), xref)) == -1)
|
|
return (xref);
|
|
return (node);
|
|
}
|
|
|
|
phandle_t
|
|
OF_xref_from_node(phandle_t node)
|
|
{
|
|
struct xrefinfo *xi;
|
|
phandle_t xref;
|
|
|
|
if (xref_init_done) {
|
|
if ((xi = xrefinfo_find(node, FIND_BY_NODE)) == NULL)
|
|
return (node);
|
|
return (xi->xref);
|
|
}
|
|
|
|
if (OF_getencprop(node, "phandle", &xref, sizeof(xref)) == -1 &&
|
|
OF_getencprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 &&
|
|
OF_getencprop(node, "linux,phandle", &xref, sizeof(xref)) == -1)
|
|
return (node);
|
|
return (xref);
|
|
}
|
|
|
|
device_t
|
|
OF_device_from_xref(phandle_t xref)
|
|
{
|
|
struct xrefinfo *xi;
|
|
|
|
if (xref_init_done) {
|
|
if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL)
|
|
return (NULL);
|
|
return (xi->dev);
|
|
}
|
|
panic("Attempt to find device before xreflist_init");
|
|
}
|
|
|
|
phandle_t
|
|
OF_xref_from_device(device_t dev)
|
|
{
|
|
struct xrefinfo *xi;
|
|
|
|
if (xref_init_done) {
|
|
if ((xi = xrefinfo_find((uintptr_t)dev, FIND_BY_DEV)) == NULL)
|
|
return (0);
|
|
return (xi->xref);
|
|
}
|
|
panic("Attempt to find xref before xreflist_init");
|
|
}
|
|
|
|
int
|
|
OF_device_register_xref(phandle_t xref, device_t dev)
|
|
{
|
|
struct xrefinfo *xi;
|
|
|
|
/*
|
|
* If the given xref handle doesn't already exist in the list then we
|
|
* add a list entry. In theory this can only happen on a system where
|
|
* nodes don't contain phandle properties and xref and node handles are
|
|
* synonymous, so the xref handle is added as the node handle as well.
|
|
*/
|
|
if (xref_init_done) {
|
|
if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL)
|
|
xrefinfo_add(xref, xref, dev);
|
|
else
|
|
xi->dev = dev;
|
|
return (0);
|
|
}
|
|
panic("Attempt to register device before xreflist_init");
|
|
}
|
|
|
|
/* Call the method in the scope of a given instance. */
|
|
int
|
|
OF_call_method(const char *method, ihandle_t instance, int nargs, int nreturns,
|
|
...)
|
|
{
|
|
va_list ap;
|
|
cell_t args_n_results[12];
|
|
int n, status;
|
|
|
|
if (nargs > 6 || ofw_def_impl == NULL)
|
|
return (-1);
|
|
va_start(ap, nreturns);
|
|
for (n = 0; n < nargs; n++)
|
|
args_n_results[n] = va_arg(ap, cell_t);
|
|
|
|
status = OFW_CALL_METHOD(ofw_obj, instance, method, nargs, nreturns,
|
|
args_n_results);
|
|
if (status != 0)
|
|
return (status);
|
|
|
|
for (; n < nargs + nreturns; n++)
|
|
*va_arg(ap, cell_t *) = args_n_results[n];
|
|
va_end(ap);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Device I/O functions
|
|
*/
|
|
|
|
/* Open an instance for a device. */
|
|
ihandle_t
|
|
OF_open(const char *device)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (0);
|
|
|
|
return (OFW_OPEN(ofw_obj, device));
|
|
}
|
|
|
|
/* Close an instance. */
|
|
void
|
|
OF_close(ihandle_t instance)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return;
|
|
|
|
OFW_CLOSE(ofw_obj, instance);
|
|
}
|
|
|
|
/* Read from an instance. */
|
|
ssize_t
|
|
OF_read(ihandle_t instance, void *addr, size_t len)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_READ(ofw_obj, instance, addr, len));
|
|
}
|
|
|
|
/* Write to an instance. */
|
|
ssize_t
|
|
OF_write(ihandle_t instance, const void *addr, size_t len)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_WRITE(ofw_obj, instance, addr, len));
|
|
}
|
|
|
|
/* Seek to a position. */
|
|
int
|
|
OF_seek(ihandle_t instance, uint64_t pos)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return (-1);
|
|
|
|
return (OFW_SEEK(ofw_obj, instance, pos));
|
|
}
|
|
|
|
/*
|
|
* Memory functions
|
|
*/
|
|
|
|
/* Claim an area of memory. */
|
|
void *
|
|
OF_claim(void *virt, size_t size, u_int align)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return ((void *)-1);
|
|
|
|
return (OFW_CLAIM(ofw_obj, virt, size, align));
|
|
}
|
|
|
|
/* Release an area of memory. */
|
|
void
|
|
OF_release(void *virt, size_t size)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return;
|
|
|
|
OFW_RELEASE(ofw_obj, virt, size);
|
|
}
|
|
|
|
/*
|
|
* Control transfer functions
|
|
*/
|
|
|
|
/* Suspend and drop back to the Open Firmware interface. */
|
|
void
|
|
OF_enter(void)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
return;
|
|
|
|
OFW_ENTER(ofw_obj);
|
|
}
|
|
|
|
/* Shut down and drop back to the Open Firmware interface. */
|
|
void
|
|
OF_exit(void)
|
|
{
|
|
|
|
if (ofw_def_impl == NULL)
|
|
panic("OF_exit: Open Firmware not available");
|
|
|
|
/* Should not return */
|
|
OFW_EXIT(ofw_obj);
|
|
|
|
for (;;) /* just in case */
|
|
;
|
|
}
|