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776 lines
16 KiB
C
776 lines
16 KiB
C
/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
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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/endian.h>
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#include <machine/stdarg.h>
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#include <stand.h>
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#include "openfirm.h"
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int (*openfirmware)(void *);
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phandle_t chosen;
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ihandle_t mmu;
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ihandle_t memory;
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int real_mode = 0;
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#define IN(x) htobe32((cell_t)x)
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#define OUT(x) be32toh(x)
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#define SETUP(a, b, c, d) \
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a.name = IN( (b) ); \
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a.nargs = IN( (c) ); \
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a.nreturns = IN( (d) );
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/* Initialiser */
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void
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OF_init(int (*openfirm)(void *))
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{
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phandle_t options;
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char mode[sizeof("true")];
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openfirmware = openfirm;
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if ((chosen = OF_finddevice("/chosen")) == -1)
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OF_exit();
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if (OF_getprop(chosen, "memory", &memory, sizeof(memory)) == -1) {
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memory = OF_open("/memory");
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if (memory == -1)
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memory = OF_open("/memory@0");
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if (memory == -1)
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OF_exit();
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}
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if (OF_getprop(chosen, "mmu", &mmu, sizeof(mmu)) == -1)
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OF_exit();
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/*
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* Check if we run in real mode. If so, we do not need to map
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* memory later on.
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*/
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options = OF_finddevice("/options");
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if (OF_getprop(options, "real-mode?", mode, sizeof(mode)) > 0 &&
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strcmp(mode, "true") == 0)
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real_mode = 1;
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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(char *name)
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{
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static 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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SETUP(args, "test", 1, 1);
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args.service = IN(name);
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if (openfirmware(&args) == -1)
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return (-1);
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return (OUT(args.missing));
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}
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/* Return firmware millisecond count. */
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int
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OF_milliseconds(void)
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{
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static 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 ms;
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} args = {};
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SETUP(args, "milliseconds", 0, 1);
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openfirmware(&args);
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return (OUT(args.ms));
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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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static 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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SETUP(args, "peer", 1, 1);
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args.node = node;
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if (openfirmware(&args) == -1)
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return (-1);
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return (args.next);
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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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static 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 child;
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} args = {};
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SETUP(args, "child", 1, 1);
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args.node = node;
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if (openfirmware(&args) == -1)
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return (-1);
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return (args.child);
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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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static 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 parent;
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} args = {};
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SETUP(args, "parent", 1, 1);
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args.node = node;
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if (openfirmware(&args) == -1)
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return (-1);
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return (args.parent);
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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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static 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 instance;
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cell_t package;
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} args = {};
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SETUP(args, "instance-to-package", 1, 1);
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args.instance = instance;
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if (openfirmware(&args) == -1)
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return (-1);
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return (args.package);
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}
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/* Get the length of a property of a package. */
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int
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OF_getproplen(phandle_t package, const char *propname)
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{
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static 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 package;
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cell_t propname;
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cell_t proplen;
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} args = {};
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SETUP(args, "getproplen", 2, 1);
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args.package = package;
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args.propname = IN(propname);
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if (openfirmware(&args) == -1)
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return (-1);
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return (OUT(args.proplen));
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}
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/* Get the value of a property of a package. */
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int
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OF_getprop(phandle_t package, const char *propname, void *buf, int buflen)
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{
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static 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 package;
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cell_t propname;
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cell_t buf;
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cell_t buflen;
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cell_t size;
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} args = {};
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SETUP(args, "getprop", 4, 1);
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args.package = package;
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args.propname = IN(propname);
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args.buf = IN(buf);
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args.buflen = IN(buflen);
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if (openfirmware(&args) == -1)
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return (-1);
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return (OUT(args.size));
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}
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/* Decode a binary property from a package. */
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int
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OF_getencprop(phandle_t package, const char *propname, cell_t *buf, int buflen)
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{
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int retval, i;
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retval = OF_getprop(package, propname, buf, buflen);
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if (retval == -1)
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return (retval);
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for (i = 0; i < buflen/4; i++)
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buf[i] = be32toh((uint32_t)buf[i]);
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return (retval);
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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)
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{
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static 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 package;
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cell_t previous;
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cell_t buf;
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cell_t flag;
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} args = {};
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SETUP(args, "nextprop", 3, 1);
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args.package = package;
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args.previous = IN(previous);
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args.buf = IN(buf);
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if (openfirmware(&args) == -1)
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return (-1);
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return (OUT(args.flag));
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}
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/* Set the value of a property of a package. */
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/* XXX Has a bug on FirePower */
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int
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OF_setprop(phandle_t package, const char *propname, void *buf, int len)
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{
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static 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 package;
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cell_t propname;
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cell_t buf;
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cell_t len;
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cell_t size;
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} args = {};
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SETUP(args, "setprop", 4, 1);
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args.package = package;
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args.propname = IN(propname);
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args.buf = IN(buf);
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args.len = IN(len);
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if (openfirmware(&args) == -1)
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return (-1);
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return (OUT(args.size));
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}
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/* Convert a device specifier to a fully qualified pathname. */
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int
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OF_canon(const char *device, char *buf, int len)
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{
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static 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 device;
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cell_t buf;
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cell_t len;
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cell_t size;
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} args = {};
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SETUP(args, "canon", 3, 1);
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args.device = IN(device);
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args.buf = IN(buf);
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args.len = IN(len);
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if (openfirmware(&args) == -1)
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return (-1);
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return (OUT(args.size));
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}
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/* Return a package handle for the specified device. */
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phandle_t
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OF_finddevice(const char *device)
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{
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static 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 device;
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cell_t package;
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} args = {};
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SETUP(args, "finddevice", 1, 1);
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args.device = IN(device);
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if (openfirmware(&args) == -1)
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return (-1);
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return (args.package);
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}
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/* Return the fully qualified pathname corresponding to an instance. */
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int
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OF_instance_to_path(ihandle_t instance, char *buf, int len)
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{
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static 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 instance;
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cell_t buf;
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cell_t len;
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cell_t size;
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} args = {};
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SETUP(args, "instance-to-path", 3, 1);
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args.instance = instance;
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args.buf = IN(buf);
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args.len = IN(len);
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if (openfirmware(&args) == -1)
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return (-1);
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return (OUT(args.size));
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}
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/* Return the fully qualified pathname corresponding to a package. */
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int
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OF_package_to_path(phandle_t package, char *buf, int len)
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{
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static 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 package;
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cell_t buf;
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cell_t len;
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cell_t size;
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} args = {};
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SETUP(args, "package-to-path", 3, 1);
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args.package = package;
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args.buf = IN(buf);
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args.len = IN(len);
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if (openfirmware(&args) == -1)
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return (-1);
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return (OUT(args.size));
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}
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/* Call the method in the scope of a given instance. */
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int
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OF_call_method(char *method, ihandle_t instance, int nargs, int nreturns, ...)
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{
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va_list ap;
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static 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 method;
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cell_t instance;
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cell_t args_n_results[12];
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} args = {};
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SETUP(args, "call-method", nargs + 2, nreturns + 1);
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cell_t *cp;
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int n;
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if (nargs > 6)
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return (-1);
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args.method = IN(method);
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args.instance = instance;
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va_start(ap, nreturns);
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for (cp = (cell_t *)(args.args_n_results + (n = nargs)); --n >= 0;)
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*--cp = IN(va_arg(ap, cell_t));
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if (openfirmware(&args) == -1)
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return (-1);
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if (args.args_n_results[nargs])
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return (OUT(args.args_n_results[nargs]));
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/* XXX what if ihandles or phandles are returned */
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for (cp = (cell_t *)(args.args_n_results + nargs +
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(n = be32toh(args.nreturns))); --n > 0;)
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*va_arg(ap, cell_t *) = OUT(*--cp);
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va_end(ap);
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return (0);
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}
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/*
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* Device I/O functions
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*/
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/* Open an instance for a device. */
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ihandle_t
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OF_open(char *device)
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{
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static 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 device;
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cell_t instance;
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} args = {};
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SETUP(args, "open", 1, 1);
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args.device = IN(device);
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if (openfirmware(&args) == -1 || args.instance == 0) {
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return (-1);
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}
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return (args.instance);
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}
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/* Close an instance. */
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void
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OF_close(ihandle_t instance)
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{
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static 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 instance;
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} args = {};
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SETUP(args, "close", 1, 0);
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args.instance = instance;
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openfirmware(&args);
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}
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/* Read from an instance. */
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int
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OF_read(ihandle_t instance, void *addr, int len)
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{
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static 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 instance;
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cell_t addr;
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cell_t len;
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cell_t actual;
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} args = {};
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SETUP(args, "read", 3, 1);
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args.instance = instance;
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args.addr = IN(addr);
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args.len = IN(len);
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#if defined(OPENFIRM_DEBUG)
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printf("OF_read: called with instance=%08x, addr=%p, len=%d\n",
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instance, addr, len);
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#endif
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if (openfirmware(&args) == -1)
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return (-1);
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#if defined(OPENFIRM_DEBUG)
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printf("OF_read: returning instance=%d, addr=%p, len=%d, actual=%d\n",
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args.instance, OUT(args.addr), OUT(args.len), OUT(args.actual));
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#endif
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return (OUT(args.actual));
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}
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/* Write to an instance. */
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int
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OF_write(ihandle_t instance, void *addr, int len)
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{
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static 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 instance;
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cell_t addr;
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cell_t len;
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cell_t actual;
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} args = {};
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SETUP(args, "write", 3, 1);
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args.instance = instance;
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args.addr = IN(addr);
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args.len = IN(len);
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if (openfirmware(&args) == -1)
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return (-1);
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|
return (OUT(args.actual));
|
|
}
|
|
|
|
/* Seek to a position. */
|
|
int
|
|
OF_seek(ihandle_t instance, uint64_t pos)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t poshi;
|
|
cell_t poslo;
|
|
cell_t status;
|
|
} args = {};
|
|
SETUP(args, "seek", 3, 1);
|
|
|
|
args.instance = instance;
|
|
args.poshi = IN(((uint64_t)pos >> 32));
|
|
args.poslo = IN(pos);
|
|
if (openfirmware(&args) == -1)
|
|
return (-1);
|
|
return (OUT(args.status));
|
|
}
|
|
|
|
/* Blocks. */
|
|
unsigned int
|
|
OF_blocks(ihandle_t instance)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t result;
|
|
cell_t blocks;
|
|
} args = {};
|
|
SETUP(args, "#blocks", 2, 1);
|
|
|
|
args.instance = instance;
|
|
if (openfirmware(&args) == -1)
|
|
return ((unsigned int)-1);
|
|
return (OUT(args.blocks));
|
|
}
|
|
|
|
/* Block size. */
|
|
int
|
|
OF_block_size(ihandle_t instance)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t instance;
|
|
cell_t result;
|
|
cell_t size;
|
|
} args = {};
|
|
SETUP(args, "block-size", 2, 1);
|
|
|
|
args.instance = instance;
|
|
if (openfirmware(&args) == -1)
|
|
return (512);
|
|
return (OUT(args.size));
|
|
}
|
|
|
|
/*
|
|
* Memory functions
|
|
*/
|
|
|
|
/* Claim an area of memory. */
|
|
void *
|
|
OF_claim(void *virt, u_int size, u_int align)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t virt;
|
|
cell_t size;
|
|
cell_t align;
|
|
cell_t baseaddr;
|
|
} args = {};
|
|
SETUP(args, "claim", 3, 1);
|
|
|
|
args.virt = IN(virt);
|
|
args.size = IN(size);
|
|
args.align = IN(align);
|
|
if (openfirmware(&args) == -1)
|
|
return ((void *)-1);
|
|
return ((void *)OUT(args.baseaddr));
|
|
}
|
|
|
|
/* Release an area of memory. */
|
|
void
|
|
OF_release(void *virt, u_int size)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t virt;
|
|
cell_t size;
|
|
} args = {};
|
|
SETUP(args, "release", 2, 0);
|
|
|
|
args.virt = IN(virt);
|
|
args.size = IN(size);
|
|
openfirmware(&args);
|
|
}
|
|
|
|
/*
|
|
* Control transfer functions
|
|
*/
|
|
|
|
/* Reset the system and call "boot <bootspec>". */
|
|
void
|
|
OF_boot(char *bootspec)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t bootspec;
|
|
} args = {};
|
|
SETUP(args, "boot", 1, 0);
|
|
|
|
args.bootspec = IN(bootspec);
|
|
openfirmware(&args);
|
|
for (;;) /* just in case */
|
|
;
|
|
}
|
|
|
|
/* Suspend and drop back to the Open Firmware interface. */
|
|
void
|
|
OF_enter(void)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
} args = {};
|
|
SETUP(args, "enter", 0, 0);
|
|
|
|
openfirmware(&args);
|
|
/* We may come back. */
|
|
}
|
|
|
|
/* Shut down and drop back to the Open Firmware interface. */
|
|
void
|
|
OF_exit(void)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
} args = {};
|
|
SETUP(args, "exit", 0, 0);
|
|
|
|
openfirmware(&args);
|
|
for (;;) /* just in case */
|
|
;
|
|
}
|
|
|
|
void
|
|
OF_quiesce(void)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
} args = {};
|
|
SETUP(args, "quiesce", 0, 0);
|
|
|
|
openfirmware(&args);
|
|
}
|
|
|
|
/* Free <size> bytes starting at <virt>, then call <entry> with <arg>. */
|
|
#if 0
|
|
void
|
|
OF_chain(void *virt, u_int size, void (*entry)(), void *arg, u_int len)
|
|
{
|
|
static struct {
|
|
cell_t name;
|
|
cell_t nargs;
|
|
cell_t nreturns;
|
|
cell_t virt;
|
|
cell_t size;
|
|
cell_t entry;
|
|
cell_t arg;
|
|
cell_t len;
|
|
} args = {};
|
|
SETUP(args, "chain", 5, 0);
|
|
|
|
args.virt = IN(virt);
|
|
args.size = IN(size);
|
|
args.entry = IN(entry);
|
|
args.arg = IN(arg);
|
|
args.len = IN(len);
|
|
openfirmware(&args);
|
|
}
|
|
#else
|
|
void
|
|
OF_chain(void *virt, u_int size, void (*entry)(), void *arg, u_int len)
|
|
{
|
|
/*
|
|
* This is a REALLY dirty hack till the firmware gets this going
|
|
*/
|
|
#if 0
|
|
if (size > 0)
|
|
OF_release(virt, size);
|
|
#endif
|
|
((int (*)(u_long, u_long, u_long, void *, u_long))entry)
|
|
(0, 0, (u_long)openfirmware, arg, len);
|
|
}
|
|
#endif
|