439 lines
10 KiB
C
439 lines
10 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/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_platform.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/systm.h>
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#include <machine/stdarg.h>
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#include <dev/ofw/ofwvar.h>
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#include <dev/ofw/openfirm.h>
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#include "ofw_if.h"
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MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
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static ihandle_t stdout;
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static ofw_def_t *ofw_def_impl;
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static ofw_t ofw_obj;
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static struct ofw_kobj ofw_kernel_obj;
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static struct kobj_ops ofw_kernel_kops;
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/*
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* OFW install routines. Highest priority wins, equal priority also
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* overrides allowing last-set to win.
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*/
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SET_DECLARE(ofw_set, ofw_def_t);
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boolean_t
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OF_install(char *name, int prio)
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{
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ofw_def_t *ofwp, **ofwpp;
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static int curr_prio = 0;
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/*
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* Try and locate the OFW kobj corresponding to the name.
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*/
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SET_FOREACH(ofwpp, ofw_set) {
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ofwp = *ofwpp;
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if (ofwp->name &&
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!strcmp(ofwp->name, name) &&
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prio >= curr_prio) {
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curr_prio = prio;
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ofw_def_impl = ofwp;
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return (TRUE);
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}
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}
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return (FALSE);
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}
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/* Initializer */
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int
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OF_init(void *cookie)
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{
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phandle_t chosen;
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int rv;
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ofw_obj = &ofw_kernel_obj;
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/*
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* Take care of compiling the selected class, and
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* then statically initialize the OFW object.
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*/
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kobj_class_compile_static(ofw_def_impl, &ofw_kernel_kops);
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kobj_init((kobj_t)ofw_obj, ofw_def_impl);
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rv = OFW_INIT(ofw_obj, cookie);
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if ((chosen = OF_finddevice("/chosen")) > 0)
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if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1)
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stdout = -1;
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return (rv);
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}
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#ifndef FDT
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void
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OF_printf(const char *fmt, ...)
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{
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va_list va;
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char buf[1024];
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va_start(va, fmt);
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vsprintf(buf, fmt, va);
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OF_write(stdout, buf, strlen(buf));
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va_end(va);
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}
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/*
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* Generic functions
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*/
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/* Test to see if a service exists. */
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int
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OF_test(const char *name)
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{
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return (OFW_TEST(ofw_obj, name));
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}
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#endif
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int
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OF_interpret(const char *cmd, int nreturns, ...)
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{
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va_list ap;
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unsigned long slots[16];
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int i = 0;
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int status;
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status = OFW_INTERPRET(ofw_obj, cmd, nreturns, slots);
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if (status == -1)
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return (status);
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va_start(ap, nreturns);
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while (i < nreturns)
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*va_arg(ap, cell_t *) = slots[i++];
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va_end(ap);
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return (status);
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}
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/*
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* Device tree functions
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*/
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/* Return the next sibling of this node or 0. */
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phandle_t
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OF_peer(phandle_t node)
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{
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return (OFW_PEER(ofw_obj, node));
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}
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/* Return the first child of this node or 0. */
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phandle_t
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OF_child(phandle_t node)
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{
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return (OFW_CHILD(ofw_obj, node));
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}
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/* Return the parent of this node or 0. */
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phandle_t
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OF_parent(phandle_t node)
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{
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return (OFW_PARENT(ofw_obj, node));
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}
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/* Return the package handle that corresponds to an instance handle. */
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phandle_t
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OF_instance_to_package(ihandle_t instance)
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{
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return (OFW_INSTANCE_TO_PACKAGE(ofw_obj, instance));
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}
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/* Get the length of a property of a package. */
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ssize_t
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OF_getproplen(phandle_t package, const char *propname)
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{
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return (OFW_GETPROPLEN(ofw_obj, package, propname));
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}
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/* Get the value of a property of a package. */
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ssize_t
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OF_getprop(phandle_t package, const char *propname, void *buf, size_t buflen)
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{
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return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen));
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}
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/*
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* Recursively search the node and its parent for the given property, working
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* downward from the node to the device tree root. Returns the value of the
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* first match.
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*/
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ssize_t
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OF_searchprop(phandle_t node, const char *propname, void *buf, size_t len)
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{
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ssize_t rv;
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for (; node != 0; node = OF_parent(node))
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if ((rv = OF_getprop(node, propname, buf, len)) != -1)
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return (rv);
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return (-1);
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}
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/*
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* Store the value of a property of a package into newly allocated memory
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* (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
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* single element, the number of elements is return in number.
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*/
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ssize_t
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OF_getprop_alloc(phandle_t package, const char *propname, int elsz, void **buf)
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{
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int len;
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*buf = NULL;
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if ((len = OF_getproplen(package, propname)) == -1 ||
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len % elsz != 0)
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return (-1);
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*buf = malloc(len, M_OFWPROP, M_WAITOK);
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if (OF_getprop(package, propname, *buf, len) == -1) {
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free(*buf, M_OFWPROP);
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*buf = NULL;
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return (-1);
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}
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return (len / elsz);
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}
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/* Get the next property of a package. */
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int
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OF_nextprop(phandle_t package, const char *previous, char *buf, size_t size)
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{
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return (OFW_NEXTPROP(ofw_obj, package, previous, buf, size));
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}
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/* Set the value of a property of a package. */
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int
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OF_setprop(phandle_t package, const char *propname, const void *buf, size_t len)
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{
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return (OFW_SETPROP(ofw_obj, package, propname, buf,len));
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}
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/* Convert a device specifier to a fully qualified pathname. */
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ssize_t
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OF_canon(const char *device, char *buf, size_t len)
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{
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return (OFW_CANON(ofw_obj, device, buf, len));
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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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return (OFW_FINDDEVICE(ofw_obj, device));
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}
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/* Return the fully qualified pathname corresponding to an instance. */
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ssize_t
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OF_instance_to_path(ihandle_t instance, char *buf, size_t len)
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{
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return (OFW_INSTANCE_TO_PATH(ofw_obj, instance, buf, len));
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}
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/* Return the fully qualified pathname corresponding to a package. */
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ssize_t
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OF_package_to_path(phandle_t package, char *buf, size_t len)
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{
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return (OFW_PACKAGE_TO_PATH(ofw_obj, package, buf, len));
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}
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#ifndef FDT
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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(const char *method, ihandle_t instance, int nargs, int nreturns,
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...)
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{
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va_list ap;
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cell_t args_n_results[12];
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int n, status;
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if (nargs > 6)
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return (-1);
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va_start(ap, nreturns);
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for (n = 0; n < nargs; n++)
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args_n_results[n] = va_arg(ap, cell_t);
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status = OFW_CALL_METHOD(ofw_obj, instance, method, nargs, nreturns,
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args_n_results);
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if (status != 0)
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return (status);
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for (; n < nargs + nreturns; n++)
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*va_arg(ap, cell_t *) = args_n_results[n];
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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(const char *device)
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{
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return (OFW_OPEN(ofw_obj, device));
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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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OFW_CLOSE(ofw_obj, instance);
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}
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/* Read from an instance. */
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ssize_t
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OF_read(ihandle_t instance, void *addr, size_t len)
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{
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return (OFW_READ(ofw_obj, instance, addr, len));
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}
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/* Write to an instance. */
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ssize_t
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OF_write(ihandle_t instance, const void *addr, size_t len)
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{
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return (OFW_WRITE(ofw_obj, instance, addr, len));
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}
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/* Seek to a position. */
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int
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OF_seek(ihandle_t instance, uint64_t pos)
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{
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return (OFW_SEEK(ofw_obj, instance, pos));
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}
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/*
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* Memory functions
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*/
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/* Claim an area of memory. */
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void *
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OF_claim(void *virt, size_t size, u_int align)
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{
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return (OFW_CLAIM(ofw_obj, virt, size, align));
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}
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/* Release an area of memory. */
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void
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OF_release(void *virt, size_t size)
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{
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OFW_RELEASE(ofw_obj, virt, size);
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}
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/*
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* Control transfer functions
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*/
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/* Suspend and drop back to the Open Firmware interface. */
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void
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OF_enter()
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{
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OFW_ENTER(ofw_obj);
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}
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/* Shut down and drop back to the Open Firmware interface. */
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void
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OF_exit()
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{
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/* Should not return */
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OFW_EXIT(ofw_obj);
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for (;;) /* just in case */
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;
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}
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#endif
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