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685dc743dc
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
1188 lines
29 KiB
C
1188 lines
29 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 AND BSD-2-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 <sys/endian.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/mutex.h>
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#include <sys/systm.h>
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#include <vm/vm.h>
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#include <vm/vm_page.h>
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#include <vm/pmap.h>
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#include <machine/bus.h>
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#include <machine/md_var.h>
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#include <machine/ofw_machdep.h>
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#include <machine/stdarg.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofwvar.h>
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#include "ofw_if.h"
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static int ofw_real_init(ofw_t, void *openfirm);
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static int ofw_real_test(ofw_t, const char *name);
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static phandle_t ofw_real_peer(ofw_t, phandle_t node);
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static phandle_t ofw_real_child(ofw_t, phandle_t node);
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static phandle_t ofw_real_parent(ofw_t, phandle_t node);
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static phandle_t ofw_real_instance_to_package(ofw_t, ihandle_t instance);
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static ssize_t ofw_real_getproplen(ofw_t, phandle_t package,
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const char *propname);
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static ssize_t ofw_real_getprop(ofw_t, phandle_t package, const char *propname,
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void *buf, size_t buflen);
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static int ofw_real_nextprop(ofw_t, phandle_t package, const char *previous,
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char *buf, size_t);
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static int ofw_real_setprop(ofw_t, phandle_t package, const char *propname,
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const void *buf, size_t len);
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static ssize_t ofw_real_canon(ofw_t, const char *device, char *buf, size_t len);
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static phandle_t ofw_real_finddevice(ofw_t, const char *device);
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static ssize_t ofw_real_instance_to_path(ofw_t, ihandle_t instance, char *buf,
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size_t len);
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static ssize_t ofw_real_package_to_path(ofw_t, phandle_t package, char *buf,
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size_t len);
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static int ofw_real_call_method(ofw_t, ihandle_t instance, const char *method,
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int nargs, int nreturns, cell_t *args_and_returns);
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static int ofw_real_interpret(ofw_t ofw, const char *cmd, int nreturns,
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cell_t *returns);
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static ihandle_t ofw_real_open(ofw_t, const char *device);
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static void ofw_real_close(ofw_t, ihandle_t instance);
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static ssize_t ofw_real_read(ofw_t, ihandle_t instance, void *addr, size_t len);
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static ssize_t ofw_real_write(ofw_t, ihandle_t instance, const void *addr,
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size_t len);
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static int ofw_real_seek(ofw_t, ihandle_t instance, u_int64_t pos);
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static caddr_t ofw_real_claim(ofw_t, void *virt, size_t size, u_int align);
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static void ofw_real_release(ofw_t, void *virt, size_t size);
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static void ofw_real_enter(ofw_t);
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static void ofw_real_exit(ofw_t);
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static ofw_method_t ofw_real_methods[] = {
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OFWMETHOD(ofw_init, ofw_real_init),
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OFWMETHOD(ofw_peer, ofw_real_peer),
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OFWMETHOD(ofw_child, ofw_real_child),
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OFWMETHOD(ofw_parent, ofw_real_parent),
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OFWMETHOD(ofw_instance_to_package, ofw_real_instance_to_package),
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OFWMETHOD(ofw_getproplen, ofw_real_getproplen),
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OFWMETHOD(ofw_getprop, ofw_real_getprop),
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OFWMETHOD(ofw_nextprop, ofw_real_nextprop),
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OFWMETHOD(ofw_setprop, ofw_real_setprop),
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OFWMETHOD(ofw_canon, ofw_real_canon),
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OFWMETHOD(ofw_finddevice, ofw_real_finddevice),
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OFWMETHOD(ofw_instance_to_path, ofw_real_instance_to_path),
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OFWMETHOD(ofw_package_to_path, ofw_real_package_to_path),
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OFWMETHOD(ofw_test, ofw_real_test),
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OFWMETHOD(ofw_call_method, ofw_real_call_method),
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OFWMETHOD(ofw_interpret, ofw_real_interpret),
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OFWMETHOD(ofw_open, ofw_real_open),
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OFWMETHOD(ofw_close, ofw_real_close),
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OFWMETHOD(ofw_read, ofw_real_read),
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OFWMETHOD(ofw_write, ofw_real_write),
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OFWMETHOD(ofw_seek, ofw_real_seek),
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OFWMETHOD(ofw_claim, ofw_real_claim),
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OFWMETHOD(ofw_release, ofw_real_release),
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OFWMETHOD(ofw_enter, ofw_real_enter),
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OFWMETHOD(ofw_exit, ofw_real_exit),
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{ 0, 0 }
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};
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static ofw_def_t ofw_real = {
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OFW_STD_REAL,
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ofw_real_methods,
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0
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};
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OFW_DEF(ofw_real);
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static ofw_def_t ofw_32bit = {
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OFW_STD_32BIT,
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ofw_real_methods,
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0
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};
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OFW_DEF(ofw_32bit);
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static MALLOC_DEFINE(M_OFWREAL, "ofwreal",
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"Open Firmware Real Mode Bounce Page");
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static int (*openfirmware)(void *);
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static vm_offset_t of_bounce_phys;
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static caddr_t of_bounce_virt;
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static off_t of_bounce_offset;
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static size_t of_bounce_size;
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#define IN(x) htobe32(x)
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#define OUT(x) be32toh(x)
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/*
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* To be able to use OFW console on PPC, that requires real mode OFW,
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* the mutex that guards the mapping/unmapping of virtual to physical
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* buffers (of_real_mtx) must be of SPIN type. This is needed because
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* kernel console first locks a SPIN mutex before calling OFW real.
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* By default, of_real_mtx is a sleepable mutex. To make it of SPIN
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* type, use the following tunnable:
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* machdep.ofw.mtx_spin=1
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*
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* Besides that, a few more tunables are needed to select and use the
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* OFW console with real mode OFW.
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*
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* In order to disable the use of OFW FrameBuffer and fallback to the
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* OFW console, use:
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* hw.ofwfb.disable=1
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*
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* To disable the use of FDT (that doesn't support OFW read/write methods)
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* and use real OFW instead, unset the following loader variable:
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* unset usefdt
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*
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* OFW is put in quiesce state in early kernel boot, which usually disables
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* OFW read/write capabilities (in QEMU write continue to work, but
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* read doesn't). To avoid OFW quiesce, use:
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* debug.quiesce_ofw=0
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*
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* Note that disabling OFW quiesce can cause conflicts between kernel and
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* OFW trying to control the same hardware. Thus, it must be used with care.
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* Some conflicts can be avoided by disabling kernel drivers with hints.
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* For instance, to disable a xhci controller and an USB keyboard connected
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* to it, that may be already being used for input by OFW, use:
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* hint.xhci.0.disabled=1
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*/
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static struct mtx of_bounce_mtx;
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static struct mtx of_spin_mtx;
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static struct mtx *of_real_mtx;
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static void (*of_mtx_lock)(void);
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static void (*of_mtx_unlock)(void);
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extern int ofw_real_mode;
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/*
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* After the VM is up, allocate a wired, low memory bounce page.
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*/
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static void ofw_real_bounce_alloc(void *);
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SYSINIT(ofw_real_bounce_alloc, SI_SUB_KMEM, SI_ORDER_ANY,
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ofw_real_bounce_alloc, NULL);
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static void
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ofw_real_mtx_lock_spin(void)
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{
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mtx_lock_spin(of_real_mtx);
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}
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static void
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ofw_real_mtx_lock(void)
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{
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mtx_lock(of_real_mtx);
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}
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static void
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ofw_real_mtx_unlock_spin(void)
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{
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mtx_unlock_spin(of_real_mtx);
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}
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static void
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ofw_real_mtx_unlock(void)
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{
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mtx_unlock(of_real_mtx);
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}
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static void
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ofw_real_start(void)
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{
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(*of_mtx_lock)();
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of_bounce_offset = 0;
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}
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static void
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ofw_real_stop(void)
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{
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(*of_mtx_unlock)();
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}
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static void
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ofw_real_bounce_alloc(void *junk)
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{
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caddr_t temp;
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/*
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* Check that ofw_real is actually in use before allocating wads
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* of memory. Do this by checking if our mutex has been set up.
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*/
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if (!mtx_initialized(&of_bounce_mtx))
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return;
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/*
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* Allocate a page of contiguous, wired physical memory that can
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* fit into a 32-bit address space and accessed from real mode.
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*/
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temp = contigmalloc(4 * PAGE_SIZE, M_OFWREAL, 0, 0,
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ulmin(platform_real_maxaddr(), BUS_SPACE_MAXADDR_32BIT), PAGE_SIZE,
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4 * PAGE_SIZE);
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if (temp == NULL)
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panic("%s: Not able to allocated contiguous memory\n", __func__);
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mtx_lock(&of_bounce_mtx);
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of_bounce_virt = temp;
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of_bounce_phys = vtophys(of_bounce_virt);
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of_bounce_size = 4 * PAGE_SIZE;
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/*
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* For virtual-mode OF, direct map this physical address so that
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* we have a 32-bit virtual address to give OF.
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*/
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if (!ofw_real_mode && (!hw_direct_map || DMAP_BASE_ADDRESS != 0))
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pmap_kenter(of_bounce_phys, of_bounce_phys);
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mtx_unlock(&of_bounce_mtx);
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}
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static cell_t
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ofw_real_map(const void *buf, size_t len)
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{
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static char emergency_buffer[255];
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cell_t phys;
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mtx_assert(of_real_mtx, MA_OWNED);
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if (of_bounce_virt == NULL) {
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/*
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* If we haven't set up the MMU, then buf is guaranteed
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* to be accessible to OF, because the only memory we
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* can use right now is memory mapped by firmware.
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*/
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if (!pmap_bootstrapped)
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return (cell_t)((uintptr_t)buf & ~DMAP_BASE_ADDRESS);
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/*
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* XXX: It is possible for us to get called before the VM has
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* come online, but after the MMU is up. We don't have the
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* bounce buffer yet, but can no longer presume a 1:1 mapping.
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* Copy into the emergency buffer, and reset at the end.
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*/
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of_bounce_virt = emergency_buffer;
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of_bounce_phys = (vm_offset_t)of_bounce_virt &
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~DMAP_BASE_ADDRESS;
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of_bounce_size = sizeof(emergency_buffer);
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}
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/*
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* Make sure the bounce page offset satisfies any reasonable
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* alignment constraint.
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*/
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of_bounce_offset += sizeof(register_t) -
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(of_bounce_offset % sizeof(register_t));
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if (of_bounce_offset + len > of_bounce_size) {
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panic("Oversize Open Firmware call!");
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return 0;
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}
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if (buf != NULL)
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memcpy(of_bounce_virt + of_bounce_offset, buf, len);
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else
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return (0);
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phys = of_bounce_phys + of_bounce_offset;
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of_bounce_offset += len;
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return (phys);
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}
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static void
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ofw_real_unmap(cell_t physaddr, void *buf, size_t len)
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{
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mtx_assert(of_real_mtx, MA_OWNED);
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if (of_bounce_virt == NULL)
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return;
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if (physaddr == 0)
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return;
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memcpy(buf,of_bounce_virt + (physaddr - of_bounce_phys),len);
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}
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/* Initialiser */
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static int
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ofw_real_init(ofw_t ofw, void *openfirm)
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{
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int mtx_spin;
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openfirmware = (int (*)(void *))openfirm;
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mtx_init(&of_bounce_mtx, "OF Bounce Page", NULL, MTX_DEF);
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mtx_spin = 0;
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TUNABLE_INT_FETCH("machdep.ofw.mtx_spin", &mtx_spin);
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if (mtx_spin) {
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mtx_init(&of_spin_mtx, "OF Real", NULL, MTX_SPIN);
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of_real_mtx = &of_spin_mtx;
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of_mtx_lock = ofw_real_mtx_lock_spin;
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of_mtx_unlock = ofw_real_mtx_unlock_spin;
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} else {
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of_real_mtx = &of_bounce_mtx;
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of_mtx_lock = ofw_real_mtx_lock;
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of_mtx_unlock = ofw_real_mtx_unlock;
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}
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of_bounce_virt = NULL;
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return (0);
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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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static int
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ofw_real_test(ofw_t ofw, const char *name)
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{
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vm_offset_t argsptr;
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struct {
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cell_t name;
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cell_t nargs;
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cell_t nreturns;
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cell_t service;
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cell_t missing;
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} args;
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args.name = IN((cell_t)(uintptr_t)"test");
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args.nargs = IN(1);
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args.nreturns = IN(1);
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ofw_real_start();
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args.service = IN(ofw_real_map(name, strlen(name) + 1));
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argsptr = ofw_real_map(&args, sizeof(args));
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if (args.service == 0 || openfirmware((void *)argsptr) == -1) {
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ofw_real_stop();
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return (-1);
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}
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ofw_real_unmap(argsptr, &args, sizeof(args));
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ofw_real_stop();
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return (OUT(args.missing));
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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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static phandle_t
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ofw_real_peer(ofw_t ofw, phandle_t node)
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{
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vm_offset_t argsptr;
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struct {
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cell_t name;
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cell_t nargs;
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cell_t nreturns;
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cell_t node;
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cell_t next;
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} args;
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args.name = IN((cell_t)(uintptr_t)"peer");
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args.nargs = IN(1);
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args.nreturns = IN(1);
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args.node = IN(node);
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ofw_real_start();
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argsptr = ofw_real_map(&args, sizeof(args));
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if (openfirmware((void *)argsptr) == -1) {
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ofw_real_stop();
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return (0);
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}
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ofw_real_unmap(argsptr, &args, sizeof(args));
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ofw_real_stop();
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return (OUT(args.next));
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}
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/* Return the first child of this node or 0. */
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static phandle_t
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ofw_real_child(ofw_t ofw, phandle_t node)
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{
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vm_offset_t argsptr;
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struct {
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cell_t name;
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|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t node;
|
|
cell_t child;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"child");
|
|
args.nargs = IN(1);
|
|
args.nreturns = IN(1);
|
|
|
|
args.node = IN(node);
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (0);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return (OUT(args.child));
|
|
}
|
|
|
|
/* Return the parent of this node or 0. */
|
|
static phandle_t
|
|
ofw_real_parent(ofw_t ofw, phandle_t node)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t node;
|
|
cell_t parent;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"parent");
|
|
args.nargs = IN(1);
|
|
args.nreturns = IN(1);
|
|
|
|
args.node = IN(node);
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (0);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return (OUT(args.parent));
|
|
}
|
|
|
|
/* Return the package handle that corresponds to an instance handle. */
|
|
static phandle_t
|
|
ofw_real_instance_to_package(ofw_t ofw, ihandle_t instance)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t package;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"instance-to-package");
|
|
args.nargs = IN(1);
|
|
args.nreturns = IN(1);
|
|
|
|
args.instance = IN(instance);
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return (OUT(args.package));
|
|
}
|
|
|
|
/* Get the length of a property of a package. */
|
|
static ssize_t
|
|
ofw_real_getproplen(ofw_t ofw, phandle_t package, const char *propname)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t propname;
|
|
int32_t proplen;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"getproplen");
|
|
args.nargs = IN(2);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.package = IN(package);
|
|
args.propname = IN(ofw_real_map(propname, strlen(propname) + 1));
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.propname == 0 || openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return ((ssize_t)(int32_t)OUT(args.proplen));
|
|
}
|
|
|
|
/* Get the value of a property of a package. */
|
|
static ssize_t
|
|
ofw_real_getprop(ofw_t ofw, phandle_t package, const char *propname, void *buf,
|
|
size_t buflen)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t propname;
|
|
cell_t buf;
|
|
cell_t buflen;
|
|
int32_t size;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"getprop");
|
|
args.nargs = IN(4);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.package = IN(package);
|
|
args.propname = IN(ofw_real_map(propname, strlen(propname) + 1));
|
|
args.buf = IN(ofw_real_map(buf, buflen));
|
|
args.buflen = IN(buflen);
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.propname == 0 || args.buf == 0 ||
|
|
openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_unmap(OUT(args.buf), buf, buflen);
|
|
|
|
ofw_real_stop();
|
|
return ((ssize_t)(int32_t)OUT(args.size));
|
|
}
|
|
|
|
/* Get the next property of a package. */
|
|
static int
|
|
ofw_real_nextprop(ofw_t ofw, phandle_t package, const char *previous,
|
|
char *buf, size_t size)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t previous;
|
|
cell_t buf;
|
|
cell_t flag;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"nextprop");
|
|
args.nargs = IN(3);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.package = IN(package);
|
|
args.previous = IN(ofw_real_map(previous, (previous != NULL) ? (strlen(previous) + 1) : 0));
|
|
args.buf = IN(ofw_real_map(buf, size));
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.buf == 0 || openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_unmap(OUT(args.buf), buf, size);
|
|
|
|
ofw_real_stop();
|
|
return (OUT(args.flag));
|
|
}
|
|
|
|
/* Set the value of a property of a package. */
|
|
/* XXX Has a bug on FirePower */
|
|
static int
|
|
ofw_real_setprop(ofw_t ofw, phandle_t package, const char *propname,
|
|
const void *buf, size_t len)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t propname;
|
|
cell_t buf;
|
|
cell_t len;
|
|
cell_t size;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"setprop");
|
|
args.nargs = IN(4);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.package = IN(package);
|
|
args.propname = IN(ofw_real_map(propname, strlen(propname) + 1));
|
|
args.buf = IN(ofw_real_map(buf, len));
|
|
args.len = IN(len);
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.propname == 0 || args.buf == 0 ||
|
|
openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return (OUT(args.size));
|
|
}
|
|
|
|
/* Convert a device specifier to a fully qualified pathname. */
|
|
static ssize_t
|
|
ofw_real_canon(ofw_t ofw, const char *device, char *buf, size_t len)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t device;
|
|
cell_t buf;
|
|
cell_t len;
|
|
int32_t size;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"canon");
|
|
args.nargs = IN(3);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.device = IN(ofw_real_map(device, strlen(device) + 1));
|
|
args.buf = IN(ofw_real_map(buf, len));
|
|
args.len = IN(len);
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.device == 0 || args.buf == 0 ||
|
|
openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_unmap(OUT(args.buf), buf, len);
|
|
|
|
ofw_real_stop();
|
|
return ((ssize_t)(int32_t)OUT(args.size));
|
|
}
|
|
|
|
/* Return a package handle for the specified device. */
|
|
static phandle_t
|
|
ofw_real_finddevice(ofw_t ofw, const char *device)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t device;
|
|
cell_t package;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"finddevice");
|
|
args.nargs = IN(1);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.device = IN(ofw_real_map(device, strlen(device) + 1));
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.device == 0 ||
|
|
openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return (OUT(args.package));
|
|
}
|
|
|
|
/* Return the fully qualified pathname corresponding to an instance. */
|
|
static ssize_t
|
|
ofw_real_instance_to_path(ofw_t ofw, ihandle_t instance, char *buf, size_t len)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t buf;
|
|
cell_t len;
|
|
int32_t size;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"instance-to-path");
|
|
args.nargs = IN(3);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.instance = IN(instance);
|
|
args.buf = IN(ofw_real_map(buf, len));
|
|
args.len = IN(len);
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.buf == 0 ||
|
|
openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_unmap(OUT(args.buf), buf, len);
|
|
|
|
ofw_real_stop();
|
|
return ((ssize_t)(int32_t)OUT(args.size));
|
|
}
|
|
|
|
/* Return the fully qualified pathname corresponding to a package. */
|
|
static ssize_t
|
|
ofw_real_package_to_path(ofw_t ofw, phandle_t package, char *buf, size_t len)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t package;
|
|
cell_t buf;
|
|
cell_t len;
|
|
int32_t size;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"package-to-path");
|
|
args.nargs = IN(3);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.package = IN(package);
|
|
args.buf = IN(ofw_real_map(buf, len));
|
|
args.len = IN(len);
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.buf == 0 ||
|
|
openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_unmap(OUT(args.buf), buf, len);
|
|
|
|
ofw_real_stop();
|
|
return ((ssize_t)(int32_t)OUT(args.size));
|
|
}
|
|
|
|
/* Call the method in the scope of a given instance. */
|
|
static int
|
|
ofw_real_call_method(ofw_t ofw, ihandle_t instance, const char *method,
|
|
int nargs, int nreturns, cell_t *args_and_returns)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t method;
|
|
cell_t instance;
|
|
cell_t args_n_results[12];
|
|
} args;
|
|
cell_t *ap, *cp;
|
|
int n;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"call-method");
|
|
args.nargs = IN(2);
|
|
args.nreturns = IN(1);
|
|
|
|
if (nargs > 6)
|
|
return (-1);
|
|
|
|
ofw_real_start();
|
|
args.nargs = IN(nargs + 2);
|
|
args.nreturns = IN(nreturns + 1);
|
|
args.method = IN(ofw_real_map(method, strlen(method) + 1));
|
|
args.instance = IN(instance);
|
|
|
|
ap = args_and_returns;
|
|
for (cp = args.args_n_results + (n = nargs); --n >= 0;)
|
|
*--cp = IN(*(ap++));
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.method == 0 ||
|
|
openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
if (OUT(args.args_n_results[nargs]))
|
|
return (OUT(args.args_n_results[nargs]));
|
|
for (cp = args.args_n_results + nargs + (n = OUT(args.nreturns)); --n > 0;)
|
|
*(ap++) = OUT(*--cp);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_real_interpret(ofw_t ofw, const char *cmd, int nreturns, cell_t *returns)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t slot[16];
|
|
} args;
|
|
cell_t status;
|
|
int i = 0, j = 0;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"interpret");
|
|
args.nargs = IN(1);
|
|
|
|
ofw_real_start();
|
|
args.nreturns = IN(++nreturns);
|
|
args.slot[i++] = IN(ofw_real_map(cmd, strlen(cmd) + 1));
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
status = OUT(args.slot[i++]);
|
|
while (i < 1 + nreturns)
|
|
returns[j++] = OUT(args.slot[i++]);
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Device I/O functions
|
|
*/
|
|
|
|
/* Open an instance for a device. */
|
|
static ihandle_t
|
|
ofw_real_open(ofw_t ofw, const char *device)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t device;
|
|
cell_t instance;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"open");
|
|
args.nargs = IN(1);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.device = IN(ofw_real_map(device, strlen(device) + 1));
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.device == 0 || openfirmware((void *)argsptr) == -1
|
|
|| args.instance == 0) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return (OUT(args.instance));
|
|
}
|
|
|
|
/* Close an instance. */
|
|
static void
|
|
ofw_real_close(ofw_t ofw, ihandle_t instance)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"close");
|
|
args.nargs = IN(1);
|
|
args.nreturns = IN(0);
|
|
args.instance = IN(instance);
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
openfirmware((void *)argsptr);
|
|
ofw_real_stop();
|
|
}
|
|
|
|
/* Read from an instance. */
|
|
static ssize_t
|
|
ofw_real_read(ofw_t ofw, ihandle_t instance, void *addr, size_t len)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t addr;
|
|
cell_t len;
|
|
int32_t actual;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"read");
|
|
args.nargs = IN(3);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.instance = IN(instance);
|
|
args.addr = IN(ofw_real_map(addr, len));
|
|
args.len = IN(len);
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.addr == 0 || openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_unmap(OUT(args.addr), addr, len);
|
|
|
|
ofw_real_stop();
|
|
return ((ssize_t)(int32_t)OUT(args.actual));
|
|
}
|
|
|
|
/* Write to an instance. */
|
|
static ssize_t
|
|
ofw_real_write(ofw_t ofw, ihandle_t instance, const void *addr, size_t len)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t addr;
|
|
cell_t len;
|
|
int32_t actual;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"write");
|
|
args.nargs = IN(3);
|
|
args.nreturns = IN(1);
|
|
|
|
ofw_real_start();
|
|
|
|
args.instance = IN(instance);
|
|
args.addr = IN(ofw_real_map(addr, len));
|
|
args.len = IN(len);
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (args.addr == 0 || openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return ((ssize_t)(int32_t)OUT(args.actual));
|
|
}
|
|
|
|
/* Seek to a position. */
|
|
static int
|
|
ofw_real_seek(ofw_t ofw, ihandle_t instance, u_int64_t pos)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t poshi;
|
|
cell_t poslo;
|
|
cell_t status;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"seek");
|
|
args.nargs = IN(3);
|
|
args.nreturns = IN(1);
|
|
|
|
args.instance = IN(instance);
|
|
args.poshi = IN(pos >> 32);
|
|
args.poslo = IN(pos);
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return (-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return (OUT(args.status));
|
|
}
|
|
|
|
/*
|
|
* Memory functions
|
|
*/
|
|
|
|
/* Claim an area of memory. */
|
|
static caddr_t
|
|
ofw_real_claim(ofw_t ofw, void *virt, size_t size, u_int align)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t virt;
|
|
cell_t size;
|
|
cell_t align;
|
|
cell_t baseaddr;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"claim");
|
|
args.nargs = IN(3);
|
|
args.nreturns = IN(1);
|
|
|
|
args.virt = IN((cell_t)(uintptr_t)virt);
|
|
args.size = IN(size);
|
|
args.align = IN(align);
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
if (openfirmware((void *)argsptr) == -1) {
|
|
ofw_real_stop();
|
|
return ((void *)-1);
|
|
}
|
|
ofw_real_unmap(argsptr, &args, sizeof(args));
|
|
ofw_real_stop();
|
|
return ((void *)(uintptr_t)(OUT(args.baseaddr)));
|
|
}
|
|
|
|
/* Release an area of memory. */
|
|
static void
|
|
ofw_real_release(ofw_t ofw, void *virt, size_t size)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t virt;
|
|
cell_t size;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"release");
|
|
args.nargs = IN(2);
|
|
args.nreturns = IN(0);
|
|
|
|
args.virt = IN((cell_t)(uintptr_t)virt);
|
|
args.size = IN(size);
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
openfirmware((void *)argsptr);
|
|
ofw_real_stop();
|
|
}
|
|
|
|
/*
|
|
* Control transfer functions
|
|
*/
|
|
|
|
/* Suspend and drop back to the Open Firmware interface. */
|
|
static void
|
|
ofw_real_enter(ofw_t ofw)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"enter");
|
|
args.nargs = IN(0);
|
|
args.nreturns = IN(0);
|
|
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
openfirmware((void *)argsptr);
|
|
/* We may come back. */
|
|
ofw_real_stop();
|
|
}
|
|
|
|
/* Shut down and drop back to the Open Firmware interface. */
|
|
static void
|
|
ofw_real_exit(ofw_t ofw)
|
|
{
|
|
vm_offset_t argsptr;
|
|
struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
} args;
|
|
|
|
args.name = IN((cell_t)(uintptr_t)"exit");
|
|
args.nargs = IN(0);
|
|
args.nreturns = IN(0);
|
|
|
|
ofw_real_start();
|
|
argsptr = ofw_real_map(&args, sizeof(args));
|
|
openfirmware((void *)argsptr);
|
|
for (;;) /* just in case */
|
|
;
|
|
ofw_real_stop();
|
|
}
|