[PATCH RTEMS 2/7] libfreebsd: Import OFW files from FreeBSD.
Gedare Bloom
gedare at rtems.org
Wed Jul 29 19:41:13 UTC 2020
On Wed, Jul 29, 2020 at 12:56 PM Niteesh G. S. <niteesh.gs at gmail.com> wrote:
>
>
> On Wed, Jul 29, 2020 at 9:24 PM Gedare Bloom <gedare at rtems.org> wrote:
>>
>> I'm a little concerned about namespace pollution.
>
>
> Can you please explain about namespace pollution?
>
I alluded to this elsewhere. The global symbols (global vars,
functions) and anything defined in a header (structs, typedefs) that
gets included by applications (end users) will be in the same
namespace as the application code. This means that the user may get a
surprise because of a name collision.
>
>>
>> On Wed, Jul 15, 2020 at 12:32 AM G S Niteesh Babu <niteesh.gs at gmail.com> wrote:
>> >
>> > freebsd head: b8c57b4
>> >
>> > The following files have been imported from FreeBSD to implement
>> > OF_* functions into RTEMS.
>> > 1) openfirm.h
>> > 2) openfirm.c
>> > 3) ofw_fdt.c
>> > ---
>> > cpukit/include/dev/ofw/openfirm.h | 187 ++++
>> > cpukit/libfreebsd/freebsd/dev/ofw/ofw_fdt.c | 479 +++++++++++
>> > cpukit/libfreebsd/freebsd/dev/ofw/openfirm.c | 848 +++++++++++++++++++
>> > 3 files changed, 1514 insertions(+)
>> > create mode 100644 cpukit/include/dev/ofw/openfirm.h
>> > create mode 100644 cpukit/libfreebsd/freebsd/dev/ofw/ofw_fdt.c
>> > create mode 100644 cpukit/libfreebsd/freebsd/dev/ofw/openfirm.c
>> >
>> > diff --git a/cpukit/include/dev/ofw/openfirm.h b/cpukit/include/dev/ofw/openfirm.h
>> > new file mode 100644
>> > index 0000000000..74a7075367
>> > --- /dev/null
>> > +++ b/cpukit/include/dev/ofw/openfirm.h
>> > @@ -0,0 +1,187 @@
>> > +/* $NetBSD: openfirm.h,v 1.1 1998/05/15 10:16:00 tsubai Exp $ */
>> > +
>> > +/*-
>> > + * SPDX-License-Identifier: (BSD-4-Clause AND BSD-2-Clause-FreeBSD)
>> > + *
>> > + * Copyright (C) 1995, 1996 Wolfgang Solfrank.
>> > + * Copyright (C) 1995, 1996 TooLs GmbH.
>> > + * All rights reserved.
>> > + *
>> > + * Redistribution and use in source and binary forms, with or without
>> > + * modification, are permitted provided that the following conditions
>> > + * are met:
>> > + * 1. Redistributions of source code must retain the above copyright
>> > + * notice, this list of conditions and the following disclaimer.
>> > + * 2. Redistributions in binary form must reproduce the above copyright
>> > + * notice, this list of conditions and the following disclaimer in the
>> > + * documentation and/or other materials provided with the distribution.
>> > + * 3. All advertising materials mentioning features or use of this software
>> > + * must display the following acknowledgement:
>> > + * This product includes software developed by TooLs GmbH.
This is not good. See if they released this clause, otherwise we can't
use this code. Sorry I didn't notice the license issue before.
>> > + * 4. The name of TooLs GmbH may not be used to endorse or promote products
>> > + * derived from this software without specific prior written permission.
I always liked the contradictory nature of #3 and #4.
>> > + *
>> > + * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
>> > + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
>> > + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
>> > + * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>> > + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
>> > + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
>> > + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
>> > + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
>> > + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
>> > + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>> > + */
>> > +/*
>> > + * Copyright (C) 2000 Benno Rice.
>> > + * All rights reserved.
>> > + *
>> > + * Redistribution and use in source and binary forms, with or without
>> > + * modification, are permitted provided that the following conditions
>> > + * are met:
>> > + * 1. Redistributions of source code must retain the above copyright
>> > + * notice, this list of conditions and the following disclaimer.
>> > + * 2. Redistributions in binary form must reproduce the above copyright
>> > + * notice, this list of conditions and the following disclaimer in the
>> > + * documentation and/or other materials provided with the distribution.
>> > + *
>> > + * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
>> > + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
>> > + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
>> > + * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>> > + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
>> > + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
>> > + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
>> > + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
>> > + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
>> > + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>> > + *
>> > + * $FreeBSD$
>> > + */
>> > +
>> > +#ifndef _DEV_OPENFIRM_H_
>> > +#define _DEV_OPENFIRM_H_
>> > +
>> > +#include <sys/types.h>
>> > +#include <machine/_bus.h>
>> > +
>> > +/*
>> > + * Prototypes for Open Firmware Interface Routines
>> > + */
>> > +
>> > +typedef uint32_t ihandle_t;
>> > +typedef uint32_t phandle_t;
>> > +typedef uint32_t pcell_t;
>> > +
>> > +#ifdef _KERNEL
>> > +#include <sys/malloc.h>
>> > +
>> > +#include <machine/ofw_machdep.h>
>> > +
>> > +MALLOC_DECLARE(M_OFWPROP);
>> > +
>> > +/*
>> > + * Open Firmware interface initialization. OF_install installs the named
>> > + * interface as the Open Firmware access mechanism, OF_init initializes it.
>> > + */
>> > +
>> > +boolean_t OF_install(char *name, int prio);
>> > +int OF_init(void *cookie);
>> > +
>> > +/*
>> > + * Known Open Firmware interface names
>> > + */
>> > +
>> > +#define OFW_STD_DIRECT "ofw_std" /* Standard OF interface */
>> > +#define OFW_STD_REAL "ofw_real" /* Real-mode OF interface */
>> > +#define OFW_STD_32BIT "ofw_32bit" /* 32-bit OF interface */
>> > +#define OFW_FDT "ofw_fdt" /* Flattened Device Tree */
>> > +
>> > +/* Generic functions */
>> > +int OF_test(const char *name);
>> > +void OF_printf(const char *fmt, ...);
>> > +
>> > +/* Device tree functions */
>> > +phandle_t OF_peer(phandle_t node);
>> > +phandle_t OF_child(phandle_t node);
>> > +phandle_t OF_parent(phandle_t node);
>> > +ssize_t OF_getproplen(phandle_t node, const char *propname);
>> > +ssize_t OF_getprop(phandle_t node, const char *propname, void *buf,
>> > + size_t len);
>> > +ssize_t OF_getencprop(phandle_t node, const char *prop, pcell_t *buf,
>> > + size_t len); /* Same as getprop, but maintains endianness */
>> > +int OF_hasprop(phandle_t node, const char *propname);
>> > +ssize_t OF_searchprop(phandle_t node, const char *propname, void *buf,
>> > + size_t len);
>> > +ssize_t OF_searchencprop(phandle_t node, const char *propname,
>> > + pcell_t *buf, size_t len);
>> > +ssize_t OF_getprop_alloc(phandle_t node, const char *propname,
>> > + void **buf);
>> > +ssize_t OF_getprop_alloc_multi(phandle_t node, const char *propname,
>> > + int elsz, void **buf);
>> > +ssize_t OF_getencprop_alloc(phandle_t node, const char *propname,
>> > + void **buf);
>> > +ssize_t OF_getencprop_alloc_multi(phandle_t node, const char *propname,
>> > + int elsz, void **buf);
>> > +void OF_prop_free(void *buf);
>> > +int OF_nextprop(phandle_t node, const char *propname, char *buf,
>> > + size_t len);
>> > +int OF_setprop(phandle_t node, const char *name, const void *buf,
>> > + size_t len);
>> > +ssize_t OF_canon(const char *path, char *buf, size_t len);
>> > +phandle_t OF_finddevice(const char *path);
>> > +ssize_t OF_package_to_path(phandle_t node, char *buf, size_t len);
>> > +
>> > +/*
>> > + * Some OF implementations (IBM, FDT) have a concept of effective phandles
>> > + * used for device-tree cross-references. Given one of these, returns the
>> > + * real phandle. If one can't be found (or running on OF implementations
>> > + * without this property), returns its input.
>> > + */
>> > +phandle_t OF_node_from_xref(phandle_t xref);
>> > +phandle_t OF_xref_from_node(phandle_t node);
>> > +
>> > +/*
>> > + * When properties contain references to other nodes using xref handles it is
>> > + * often necessary to use interfaces provided by the driver for the referenced
>> > + * instance. These routines allow a driver that provides such an interface to
>> > + * register its association with an xref handle, and for other drivers to obtain
>> > + * the device_t associated with an xref handle.
>> > + */
>> > +device_t OF_device_from_xref(phandle_t xref);
>> > +phandle_t OF_xref_from_device(device_t dev);
>> > +int OF_device_register_xref(phandle_t xref, device_t dev);
>> > +
>> > +/* Device I/O functions */
>> > +ihandle_t OF_open(const char *path);
>> > +void OF_close(ihandle_t instance);
>> > +ssize_t OF_read(ihandle_t instance, void *buf, size_t len);
>> > +ssize_t OF_write(ihandle_t instance, const void *buf, size_t len);
>> > +int OF_seek(ihandle_t instance, uint64_t where);
>> > +
>> > +phandle_t OF_instance_to_package(ihandle_t instance);
>> > +ssize_t OF_instance_to_path(ihandle_t instance, char *buf, size_t len);
>> > +int OF_call_method(const char *method, ihandle_t instance,
>> > + int nargs, int nreturns, ...);
>> > +
>> > +/* Memory functions */
>> > +void *OF_claim(void *virtrequest, size_t size, u_int align);
>> > +void OF_release(void *virt, size_t size);
>> > +
>> > +/* Control transfer functions */
>> > +void OF_enter(void);
>> > +void OF_exit(void) __attribute__((noreturn));
>> > +
>> > +/* User interface functions */
>> > +int OF_interpret(const char *cmd, int nreturns, ...);
>> > +
>> > +/*
>> > + * Decode the Nth register property of the given device node and create a bus
>> > + * space tag and handle for accessing it. This is for use in setting up things
>> > + * like early console output before newbus is available.
>> > + */
>> > +int OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *ptag,
>> > + bus_space_handle_t *phandle, bus_size_t *sz);
>> > +
>> > +#endif /* _KERNEL */
>> > +#endif /* _DEV_OPENFIRM_H_ */
>> > \ No newline at end of file
>> > diff --git a/cpukit/libfreebsd/freebsd/dev/ofw/ofw_fdt.c b/cpukit/libfreebsd/freebsd/dev/ofw/ofw_fdt.c
>> > new file mode 100644
>> > index 0000000000..e4f72e8142
>> > --- /dev/null
>> > +++ b/cpukit/libfreebsd/freebsd/dev/ofw/ofw_fdt.c
>> > @@ -0,0 +1,479 @@
>> > +/*-
>> > + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
>> > + *
>> > + * Copyright (c) 2009-2010 The FreeBSD Foundation
>> > + * All rights reserved.
>> > + *
>> > + * This software was developed by Semihalf under sponsorship from
>> > + * the FreeBSD Foundation.
>> > + *
>> > + * Redistribution and use in source and binary forms, with or without
>> > + * modification, are permitted provided that the following conditions
>> > + * are met:
>> > + * 1. Redistributions of source code must retain the above copyright
>> > + * notice, this list of conditions and the following disclaimer.
>> > + * 2. Redistributions in binary form must reproduce the above copyright
>> > + * notice, this list of conditions and the following disclaimer in the
>> > + * documentation and/or other materials provided with the distribution.
>> > + *
>> > + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
>> > + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
>> > + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
>> > + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
>> > + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
>> > + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
>> > + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
>> > + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
>> > + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
>> > + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
>> > + * SUCH DAMAGE.
>> > + */
>> > +
>> > +#include <sys/cdefs.h>
>> > +__FBSDID("$FreeBSD$");
>> > +
>> > +#include <sys/param.h>
>> > +#include <sys/kernel.h>
>> > +#include <sys/malloc.h>
>> > +#include <sys/systm.h>
>> > +
>> > +#include <contrib/libfdt/libfdt.h>
>> > +
>> > +#include <machine/stdarg.h>
>> > +
>> > +#include <dev/fdt/fdt_common.h>
>> > +#include <dev/ofw/ofwvar.h>
>> > +#include <dev/ofw/openfirm.h>
>> > +#include <dev/ofw/ofw_bus_subr.h>
>> > +
>> > +#include "ofw_if.h"
>> > +
>> > +#ifdef DEBUG
>> > +#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
>> > + printf(fmt,##args); } while (0)
>> > +#else
>> > +#define debugf(fmt, args...)
>> > +#endif
>> > +
>> > +#if defined(__arm__)
>> > +#if defined(SOC_MV_ARMADAXP) || defined(SOC_MV_ARMADA38X) || \
>> > + defined(SOC_MV_DISCOVERY) || defined(SOC_MV_DOVE) || \
>> > + defined(SOC_MV_FREY) || defined(SOC_MV_KIRKWOOD) || \
>> > + defined(SOC_MV_LOKIPLUS) || defined(SOC_MV_ORION)
>> > +#define FDT_MARVELL
>> > +#endif
>> > +#endif
>> > +
>> > +static int ofw_fdt_init(ofw_t, void *);
>> > +static phandle_t ofw_fdt_peer(ofw_t, phandle_t);
>> > +static phandle_t ofw_fdt_child(ofw_t, phandle_t);
>> > +static phandle_t ofw_fdt_parent(ofw_t, phandle_t);
>> > +static phandle_t ofw_fdt_instance_to_package(ofw_t, ihandle_t);
>> > +static ssize_t ofw_fdt_getproplen(ofw_t, phandle_t, const char *);
>> > +static ssize_t ofw_fdt_getprop(ofw_t, phandle_t, const char *, void *, size_t);
>> > +static int ofw_fdt_nextprop(ofw_t, phandle_t, const char *, char *, size_t);
>> > +static int ofw_fdt_setprop(ofw_t, phandle_t, const char *, const void *,
>> > + size_t);
>> > +static ssize_t ofw_fdt_canon(ofw_t, const char *, char *, size_t);
>> > +static phandle_t ofw_fdt_finddevice(ofw_t, const char *);
>> > +static ssize_t ofw_fdt_instance_to_path(ofw_t, ihandle_t, char *, size_t);
>> > +static ssize_t ofw_fdt_package_to_path(ofw_t, phandle_t, char *, size_t);
>> > +static int ofw_fdt_interpret(ofw_t, const char *, int, cell_t *);
>> > +
>> > +static ofw_method_t ofw_fdt_methods[] = {
>> > + OFWMETHOD(ofw_init, ofw_fdt_init),
>> > + OFWMETHOD(ofw_peer, ofw_fdt_peer),
>> > + OFWMETHOD(ofw_child, ofw_fdt_child),
>> > + OFWMETHOD(ofw_parent, ofw_fdt_parent),
>> > + OFWMETHOD(ofw_instance_to_package, ofw_fdt_instance_to_package),
>> > + OFWMETHOD(ofw_getproplen, ofw_fdt_getproplen),
>> > + OFWMETHOD(ofw_getprop, ofw_fdt_getprop),
>> > + OFWMETHOD(ofw_nextprop, ofw_fdt_nextprop),
>> > + OFWMETHOD(ofw_setprop, ofw_fdt_setprop),
>> > + OFWMETHOD(ofw_canon, ofw_fdt_canon),
>> > + OFWMETHOD(ofw_finddevice, ofw_fdt_finddevice),
>> > + OFWMETHOD(ofw_instance_to_path, ofw_fdt_instance_to_path),
>> > + OFWMETHOD(ofw_package_to_path, ofw_fdt_package_to_path),
>> > + OFWMETHOD(ofw_interpret, ofw_fdt_interpret),
>> > + { 0, 0 }
>> > +};
>> > +
>> > +static ofw_def_t ofw_fdt = {
>> > + OFW_FDT,
>> > + ofw_fdt_methods,
>> > + 0
>> > +};
>> > +OFW_DEF(ofw_fdt);
>> > +
>> > +static void *fdtp = NULL;
>> > +
>> > +static int
>> > +sysctl_handle_dtb(SYSCTL_HANDLER_ARGS)
>> > +{
>> > +
>> > + return (sysctl_handle_opaque(oidp, fdtp, fdt_totalsize(fdtp), req));
>> > +}
>> > +
>> > +static void
>> > +sysctl_register_fdt_oid(void *arg)
>> > +{
>> > +
>> > + /* If there is no FDT registered, skip adding the sysctl */
>> > + if (fdtp == NULL)
>> > + return;
>> > +
>> > + SYSCTL_ADD_PROC(NULL, SYSCTL_STATIC_CHILDREN(_hw_fdt), OID_AUTO, "dtb",
>> > + CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
>> > + sysctl_handle_dtb, "", "Device Tree Blob");
>> > +}
>> > +SYSINIT(dtb_oid, SI_SUB_KMEM, SI_ORDER_ANY, sysctl_register_fdt_oid, NULL);
>> > +
>> > +static int
>> > +ofw_fdt_init(ofw_t ofw, void *data)
>> > +{
>> > + int err;
>> > +
>> > + /* Check FDT blob integrity */
>> > + if ((err = fdt_check_header(data)) != 0)
>> > + return (err);
>> > +
>> > + fdtp = data;
>> > + return (0);
>> > +}
>> > +
>> > +/*
>> > + * Device tree functions.
>> > + *
>> > + * We use the offset from fdtp to the node as the 'phandle' in OF interface.
>> > + *
>> > + * phandle is a u32 value, therefore we cannot use the pointer to node as
>> > + * phandle in 64 bit. We also do not use the usual fdt offset as phandle,
>> > + * as it can be 0, and the OF interface has special meaning for phandle 0.
>> > + */
>> > +
>> > +static phandle_t
>> > +fdt_offset_phandle(int offset)
>> > +{
>> > + if (offset < 0)
>> > + return (0);
>> > + return ((phandle_t)offset + fdt_off_dt_struct(fdtp));
>> > +}
>> > +
>> > +static int
>> > +fdt_phandle_offset(phandle_t p)
>> > +{
>> > + int pint = (int)p;
>> > + int dtoff = fdt_off_dt_struct(fdtp);
>> > +
>> > + if (pint < dtoff)
>> > + return (-1);
>> > + return (pint - dtoff);
>> > +}
>> > +
>> > +/* Return the next sibling of this node or 0. */
>> > +static phandle_t
>> > +ofw_fdt_peer(ofw_t ofw, phandle_t node)
>> > +{
>> > + int offset;
>> > +
>> > + if (node == 0) {
>> > + /* Find root node */
>> > + offset = fdt_path_offset(fdtp, "/");
>> > +
>> > + return (fdt_offset_phandle(offset));
>> > + }
>> > +
>> > + offset = fdt_phandle_offset(node);
>> > + if (offset < 0)
>> > + return (0);
>> > + offset = fdt_next_subnode(fdtp, offset);
>> > + return (fdt_offset_phandle(offset));
>> > +}
>> > +
>> > +/* Return the first child of this node or 0. */
>> > +static phandle_t
>> > +ofw_fdt_child(ofw_t ofw, phandle_t node)
>> > +{
>> > + int offset;
>> > +
>> > + offset = fdt_phandle_offset(node);
>> > + if (offset < 0)
>> > + return (0);
>> > + offset = fdt_first_subnode(fdtp, offset);
>> > + return (fdt_offset_phandle(offset));
>> > +}
>> > +
>> > +/* Return the parent of this node or 0. */
>> > +static phandle_t
>> > +ofw_fdt_parent(ofw_t ofw, phandle_t node)
>> > +{
>> > + int offset, paroffset;
>> > +
>> > + offset = fdt_phandle_offset(node);
>> > + if (offset < 0)
>> > + return (0);
>> > +
>> > + paroffset = fdt_parent_offset(fdtp, offset);
>> > + return (fdt_offset_phandle(paroffset));
>> > +}
>> > +
>> > +/* Return the package handle that corresponds to an instance handle. */
>> > +static phandle_t
>> > +ofw_fdt_instance_to_package(ofw_t ofw, ihandle_t instance)
>> > +{
>> > +
>> > + /* Where real OF uses ihandles in the tree, FDT uses xref phandles */
>> > + return (OF_node_from_xref(instance));
>> > +}
>> > +
>> > +/* Get the length of a property of a package. */
>> > +static ssize_t
>> > +ofw_fdt_getproplen(ofw_t ofw, phandle_t package, const char *propname)
>> > +{
>> > + const void *prop;
>> > + int offset, len;
>> > +
>> > + offset = fdt_phandle_offset(package);
>> > + if (offset < 0)
>> > + return (-1);
>> > +
>> > + len = -1;
>> > + prop = fdt_getprop(fdtp, offset, propname, &len);
>> > +
>> > + if (prop == NULL && strcmp(propname, "name") == 0) {
>> > + /* Emulate the 'name' property */
>> > + fdt_get_name(fdtp, offset, &len);
>> > + return (len + 1);
>> > + }
>> > +
>> > + if (prop == NULL && offset == fdt_path_offset(fdtp, "/chosen")) {
>> > + if (strcmp(propname, "fdtbootcpu") == 0)
>> > + return (sizeof(cell_t));
>> > + if (strcmp(propname, "fdtmemreserv") == 0)
>> > + return (sizeof(uint64_t)*2*fdt_num_mem_rsv(fdtp));
>> > + }
>> > +
>> > + if (prop == NULL)
>> > + return (-1);
>> > +
>> > + return (len);
>> > +}
>> > +
>> > +/* Get the value of a property of a package. */
>> > +static ssize_t
>> > +ofw_fdt_getprop(ofw_t ofw, phandle_t package, const char *propname, void *buf,
>> > + size_t buflen)
>> > +{
>> > + const void *prop;
>> > + const char *name;
>> > + int len, offset;
>> > + uint32_t cpuid;
>> > +
>> > + offset = fdt_phandle_offset(package);
>> > + if (offset < 0)
>> > + return (-1);
>> > +
>> > + prop = fdt_getprop(fdtp, offset, propname, &len);
>> > +
>> > + if (prop == NULL && strcmp(propname, "name") == 0) {
>> > + /* Emulate the 'name' property */
>> > + name = fdt_get_name(fdtp, offset, &len);
>> > + strncpy(buf, name, buflen);
>> > + return (len + 1);
>> > + }
>> > +
>> > + if (prop == NULL && offset == fdt_path_offset(fdtp, "/chosen")) {
>> > + if (strcmp(propname, "fdtbootcpu") == 0) {
>> > + cpuid = cpu_to_fdt32(fdt_boot_cpuid_phys(fdtp));
>> > + len = sizeof(cpuid);
>> > + prop = &cpuid;
>> > + }
>> > + if (strcmp(propname, "fdtmemreserv") == 0) {
>> > + prop = (char *)fdtp + fdt_off_mem_rsvmap(fdtp);
>> > + len = sizeof(uint64_t)*2*fdt_num_mem_rsv(fdtp);
>> > + }
>> > + }
>> > +
>> > + if (prop == NULL)
>> > + return (-1);
>> > +
>> > + bcopy(prop, buf, min(len, buflen));
>> > +
>> > + return (len);
>> > +}
>> > +
>> > +/*
>> > + * Get the next property of a package. Return values:
>> > + * -1: package or previous property does not exist
>> > + * 0: no more properties
>> > + * 1: success
>> > + */
>> > +static int
>> > +ofw_fdt_nextprop(ofw_t ofw, phandle_t package, const char *previous, char *buf,
>> > + size_t size)
>> > +{
>> > + const void *prop;
>> > + const char *name;
>> > + int offset;
>> > +
>> > + offset = fdt_phandle_offset(package);
>> > + if (offset < 0)
>> > + return (-1);
>> > +
>> > + if (previous == NULL)
>> > + /* Find the first prop in the node */
>> > + offset = fdt_first_property_offset(fdtp, offset);
>> > + else {
>> > + fdt_for_each_property_offset(offset, fdtp, offset) {
>> > + prop = fdt_getprop_by_offset(fdtp, offset, &name, NULL);
>> > + if (prop == NULL)
>> > + return (-1); /* Internal error */
>> > + /* Skip until we find 'previous', then bail out */
>> > + if (strcmp(name, previous) != 0)
>> > + continue;
>> > + offset = fdt_next_property_offset(fdtp, offset);
>> > + break;
>> > + }
>> > + }
>> > +
>> > + if (offset < 0)
>> > + return (0); /* No properties */
>> > +
>> > + prop = fdt_getprop_by_offset(fdtp, offset, &name, &offset);
>> > + if (prop == NULL)
>> > + return (-1); /* Internal error */
>> > +
>> > + strncpy(buf, name, size);
>> > +
>> > + return (1);
>> > +}
>> > +
>> > +/* Set the value of a property of a package. */
>> > +static int
>> > +ofw_fdt_setprop(ofw_t ofw, phandle_t package, const char *propname,
>> > + const void *buf, size_t len)
>> > +{
>> > + int offset;
>> > +
>> > + offset = fdt_phandle_offset(package);
>> > + if (offset < 0)
>> > + return (-1);
>> > +
>> > + if (fdt_setprop_inplace(fdtp, offset, propname, buf, len) != 0)
>> > + /* Try to add property, when setting value inplace failed */
>> > + return (fdt_setprop(fdtp, offset, propname, buf, len));
>> > +
>> > + return (0);
>> > +}
>> > +
>> > +/* Convert a device specifier to a fully qualified pathname. */
>> > +static ssize_t
>> > +ofw_fdt_canon(ofw_t ofw, const char *device, char *buf, size_t len)
>> > +{
>> > +
>> > + return (-1);
>> > +}
>> > +
>> > +/* Return a package handle for the specified device. */
>> > +static phandle_t
>> > +ofw_fdt_finddevice(ofw_t ofw, const char *device)
>> > +{
>> > + int offset;
>> > +
>> > + offset = fdt_path_offset(fdtp, device);
>> > + if (offset < 0)
>> > + return (-1);
>> > + return (fdt_offset_phandle(offset));
>> > +}
>> > +
>> > +/* Return the fully qualified pathname corresponding to an instance. */
>> > +static ssize_t
>> > +ofw_fdt_instance_to_path(ofw_t ofw, ihandle_t instance, char *buf, size_t len)
>> > +{
>> > + phandle_t phandle;
>> > +
>> > + phandle = OF_instance_to_package(instance);
>> > + if (phandle == -1)
>> > + return (-1);
>> > +
>> > + return (OF_package_to_path(phandle, buf, len));
>> > +}
>> > +
>> > +/* Return the fully qualified pathname corresponding to a package. */
>> > +static ssize_t
>> > +ofw_fdt_package_to_path(ofw_t ofw, phandle_t package, char *buf, size_t len)
>> > +{
>> > +
>> > + return (-1);
>> > +}
>> > +
>> > +#if defined(FDT_MARVELL)
>> > +static int
>> > +ofw_fdt_fixup(ofw_t ofw)
>> > +{
>> > +#define FDT_MODEL_LEN 80
>> > + char model[FDT_MODEL_LEN];
>> > + phandle_t root;
>> > + ssize_t len;
>> > + int i;
>> > +
>> > + if ((root = ofw_fdt_finddevice(ofw, "/")) == -1)
>> > + return (ENODEV);
>> > +
>> > + if ((len = ofw_fdt_getproplen(ofw, root, "model")) <= 0)
>> > + return (0);
>> > +
>> > + bzero(model, FDT_MODEL_LEN);
>> > + if (ofw_fdt_getprop(ofw, root, "model", model, FDT_MODEL_LEN) <= 0)
>> > + return (0);
>> > +
>> > + /*
>> > + * Search fixup table and call handler if appropriate.
>> > + */
>> > + for (i = 0; fdt_fixup_table[i].model != NULL; i++) {
>> > + if (strncmp(model, fdt_fixup_table[i].model,
>> > + FDT_MODEL_LEN) != 0)
>> > + /*
>> > + * Sometimes it's convenient to provide one
>> > + * fixup entry that refers to many boards.
>> > + * To handle this case, simply check if model
>> > + * is compatible parameter
>> > + */
>> > + if(!ofw_bus_node_is_compatible(root,
>> > + fdt_fixup_table[i].model))
>> > + continue;
>> > +
>> > + if (fdt_fixup_table[i].handler != NULL)
>> > + (*fdt_fixup_table[i].handler)(root);
>> > + }
>> > +
>> > + return (0);
>> > +}
>> > +#endif
>> > +
>> > +static int
>> > +ofw_fdt_interpret(ofw_t ofw, const char *cmd, int nret, cell_t *retvals)
>> > +{
>> > +#if defined(FDT_MARVELL)
>> > + int rv;
>> > +
>> > + /*
>> > + * Note: FDT does not have the possibility to 'interpret' commands,
>> > + * but we abuse the interface a bit to use it for doing non-standard
>> > + * operations on the device tree blob.
>> > + *
>> > + * Currently the only supported 'command' is to trigger performing
>> > + * fixups.
>> > + */
>> > + if (strncmp("perform-fixup", cmd, 13) != 0)
>> > + return (0);
>> > +
>> > + rv = ofw_fdt_fixup(ofw);
>> > + if (nret > 0)
>> > + retvals[0] = rv;
>> > +
>> > + return (rv);
>> > +#else
>> > + return (0);
>> > +#endif
>> > +}
>> > \ No newline at end of file
>> > diff --git a/cpukit/libfreebsd/freebsd/dev/ofw/openfirm.c b/cpukit/libfreebsd/freebsd/dev/ofw/openfirm.c
>> > new file mode 100644
>> > index 0000000000..50ebf2cf16
>> > --- /dev/null
>> > +++ b/cpukit/libfreebsd/freebsd/dev/ofw/openfirm.c
>> > @@ -0,0 +1,848 @@
>> > +/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
>> > +
>> > +/*-
>> > + * SPDX-License-Identifier: BSD-4-Clause
>> > + *
>> > + * Copyright (C) 1995, 1996 Wolfgang Solfrank.
>> > + * Copyright (C) 1995, 1996 TooLs GmbH.
>> > + * All rights reserved.
>> > + *
>> > + * Redistribution and use in source and binary forms, with or without
>> > + * modification, are permitted provided that the following conditions
>> > + * are met:
>> > + * 1. Redistributions of source code must retain the above copyright
>> > + * notice, this list of conditions and the following disclaimer.
>> > + * 2. Redistributions in binary form must reproduce the above copyright
>> > + * notice, this list of conditions and the following disclaimer in the
>> > + * documentation and/or other materials provided with the distribution.
>> > + * 3. All advertising materials mentioning features or use of this software
>> > + * must display the following acknowledgement:
>> > + * This product includes software developed by TooLs GmbH.
>> > + * 4. The name of TooLs GmbH may not be used to endorse or promote products
>> > + * derived from this software without specific prior written permission.
>> > + *
>> > + * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
>> > + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
>> > + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
>> > + * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>> > + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
>> > + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
>> > + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
>> > + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
>> > + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
>> > + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>> > + */
>> > +/*-
>> > + * Copyright (C) 2000 Benno Rice.
>> > + * All rights reserved.
>> > + *
>> > + * Redistribution and use in source and binary forms, with or without
>> > + * modification, are permitted provided that the following conditions
>> > + * are met:
>> > + * 1. Redistributions of source code must retain the above copyright
>> > + * notice, this list of conditions and the following disclaimer.
>> > + * 2. Redistributions in binary form must reproduce the above copyright
>> > + * notice, this list of conditions and the following disclaimer in the
>> > + * documentation and/or other materials provided with the distribution.
>> > + *
>> > + * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
>> > + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
>> > + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
>> > + * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>> > + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
>> > + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
>> > + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
>> > + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
>> > + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
>> > + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>> > + */
>> > +
>> > +#include <sys/cdefs.h>
>> > +__FBSDID("$FreeBSD$");
>> > +
>> > +#include "opt_platform.h"
>> > +
>> > +#include <sys/param.h>
>> > +#include <sys/kernel.h>
>> > +#include <sys/lock.h>
>> > +#include <sys/malloc.h>
>> > +#include <sys/mutex.h>
>> > +#include <sys/queue.h>
>> > +#include <sys/systm.h>
>> > +#include <sys/endian.h>
>> > +
>> > +#include <machine/stdarg.h>
>> > +
>> > +#include <dev/ofw/ofwvar.h>
>> > +#include <dev/ofw/openfirm.h>
>> > +
>> > +#include "ofw_if.h"
>> > +
>> > +static void OF_putchar(int c, void *arg);
>> > +
>> > +MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
>> > +
>> > +static ihandle_t stdout;
>> > +
>> > +static ofw_def_t *ofw_def_impl = NULL;
>> > +static ofw_t ofw_obj;
>> > +static struct ofw_kobj ofw_kernel_obj;
>> > +static struct kobj_ops ofw_kernel_kops;
>> > +
>> > +struct xrefinfo {
>> > + phandle_t xref;
>> > + phandle_t node;
>> > + device_t dev;
>> > + SLIST_ENTRY(xrefinfo) next_entry;
>> > +};
>> > +
>> > +static SLIST_HEAD(, xrefinfo) xreflist = SLIST_HEAD_INITIALIZER(xreflist);
>> > +static struct mtx xreflist_lock;
>> > +static boolean_t xref_init_done;
>> > +
>> > +#define FIND_BY_XREF 0
>> > +#define FIND_BY_NODE 1
>> > +#define FIND_BY_DEV 2
>> > +
>> > +/*
>> > + * xref-phandle-device lookup helper routines.
>> > + *
>> > + * As soon as we are able to use malloc(), walk the node tree and build a list
>> > + * of info that cross-references node handles, xref handles, and device_t
>> > + * instances. This list exists primarily to allow association of a device_t
>> > + * with an xref handle, but it is also used to speed up translation between xref
>> > + * and node handles. Before malloc() is available we have to recursively search
>> > + * the node tree each time we want to translate between a node and xref handle.
>> > + * Afterwards we can do the translations by searching this much shorter list.
>> > + */
>> > +static void
>> > +xrefinfo_create(phandle_t node)
>> > +{
>> > + struct xrefinfo * xi;
>> > + phandle_t child, xref;
>> > +
>> > + /*
>> > + * Recursively descend from parent, looking for nodes with a property
>> > + * named either "phandle", "ibm,phandle", or "linux,phandle". For each
>> > + * such node found create an entry in the xreflist.
>> > + */
>> > + for (child = OF_child(node); child != 0; child = OF_peer(child)) {
>> > + xrefinfo_create(child);
>> > + if (OF_getencprop(child, "phandle", &xref, sizeof(xref)) ==
>> > + -1 && OF_getencprop(child, "ibm,phandle", &xref,
>> > + sizeof(xref)) == -1 && OF_getencprop(child,
>> > + "linux,phandle", &xref, sizeof(xref)) == -1)
>> > + continue;
>> > + xi = malloc(sizeof(*xi), M_OFWPROP, M_WAITOK | M_ZERO);
>> > + xi->node = child;
>> > + xi->xref = xref;
>> > + SLIST_INSERT_HEAD(&xreflist, xi, next_entry);
>> > + }
>> > +}
>> > +
>> > +static void
>> > +xrefinfo_init(void *unsed)
>> > +{
>> > +
>> > + /*
>> > + * There is no locking during this init because it runs much earlier
>> > + * than any of the clients/consumers of the xref list data, but we do
>> > + * initialize the mutex that will be used for access later.
>> > + */
>> > + mtx_init(&xreflist_lock, "OF xreflist lock", NULL, MTX_DEF);
>> > + xrefinfo_create(OF_peer(0));
>> > + xref_init_done = true;
>> > +}
>> > +SYSINIT(xrefinfo, SI_SUB_KMEM, SI_ORDER_ANY, xrefinfo_init, NULL);
>> > +
>> > +static struct xrefinfo *
>> > +xrefinfo_find(uintptr_t key, int find_by)
>> > +{
>> > + struct xrefinfo *rv, *xi;
>> > +
>> > + rv = NULL;
>> > + mtx_lock(&xreflist_lock);
>> > + SLIST_FOREACH(xi, &xreflist, next_entry) {
>> > + if ((find_by == FIND_BY_XREF && (phandle_t)key == xi->xref) ||
>> > + (find_by == FIND_BY_NODE && (phandle_t)key == xi->node) ||
>> > + (find_by == FIND_BY_DEV && key == (uintptr_t)xi->dev)) {
>> > + rv = xi;
>> > + break;
>> > + }
>> > + }
>> > + mtx_unlock(&xreflist_lock);
>> > + return (rv);
>> > +}
>> > +
>> > +static struct xrefinfo *
>> > +xrefinfo_add(phandle_t node, phandle_t xref, device_t dev)
>> > +{
>> > + struct xrefinfo *xi;
>> > +
>> > + xi = malloc(sizeof(*xi), M_OFWPROP, M_WAITOK);
>> > + xi->node = node;
>> > + xi->xref = xref;
>> > + xi->dev = dev;
>> > + mtx_lock(&xreflist_lock);
>> > + SLIST_INSERT_HEAD(&xreflist, xi, next_entry);
>> > + mtx_unlock(&xreflist_lock);
>> > + return (xi);
>> > +}
>> > +
>> > +/*
>> > + * OFW install routines. Highest priority wins, equal priority also
>> > + * overrides allowing last-set to win.
>> > + */
>> > +SET_DECLARE(ofw_set, ofw_def_t);
>> > +
>> > +boolean_t
>> > +OF_install(char *name, int prio)
>> > +{
>> > + ofw_def_t *ofwp, **ofwpp;
>> > + static int curr_prio = 0;
>> > +
>> > + /* Allow OF layer to be uninstalled */
>> > + if (name == NULL) {
>> > + ofw_def_impl = NULL;
>> > + return (FALSE);
>> > + }
>> > +
>> > + /*
>> > + * Try and locate the OFW kobj corresponding to the name.
>> > + */
>> > + SET_FOREACH(ofwpp, ofw_set) {
>> > + ofwp = *ofwpp;
>> > +
>> > + if (ofwp->name &&
>> > + !strcmp(ofwp->name, name) &&
>> > + prio >= curr_prio) {
>> > + curr_prio = prio;
>> > + ofw_def_impl = ofwp;
>> > + return (TRUE);
>> > + }
>> > + }
>> > +
>> > + return (FALSE);
>> > +}
>> > +
>> > +/* Initializer */
>> > +int
>> > +OF_init(void *cookie)
>> > +{
>> > + phandle_t chosen;
>> > + int rv;
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + ofw_obj = &ofw_kernel_obj;
>> > + /*
>> > + * Take care of compiling the selected class, and
>> > + * then statically initialize the OFW object.
>> > + */
>> > + kobj_class_compile_static(ofw_def_impl, &ofw_kernel_kops);
>> > + kobj_init_static((kobj_t)ofw_obj, ofw_def_impl);
>> > +
>> > + rv = OFW_INIT(ofw_obj, cookie);
>> > +
>> > + if ((chosen = OF_finddevice("/chosen")) != -1)
>> > + if (OF_getencprop(chosen, "stdout", &stdout,
>> > + sizeof(stdout)) == -1)
>> > + stdout = -1;
>> > +
>> > + return (rv);
>> > +}
>> > +
>> > +static void
>> > +OF_putchar(int c, void *arg __unused)
>> > +{
>> > + char cbuf;
>> > +
>> > + if (c == '\n') {
>> > + cbuf = '\r';
>> > + OF_write(stdout, &cbuf, 1);
>> > + }
>> > +
>> > + cbuf = c;
>> > + OF_write(stdout, &cbuf, 1);
>> > +}
>> > +
>> > +void
>> > +OF_printf(const char *fmt, ...)
>> > +{
>> > + va_list va;
>> > +
>> > + va_start(va, fmt);
>> > + (void)kvprintf(fmt, OF_putchar, NULL, 10, va);
>> > + va_end(va);
>> > +}
>> > +
>> > +/*
>> > + * Generic functions
>> > + */
>> > +
>> > +/* Test to see if a service exists. */
>> > +int
>> > +OF_test(const char *name)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_TEST(ofw_obj, name));
>> > +}
>> > +
>> > +int
>> > +OF_interpret(const char *cmd, int nreturns, ...)
>> > +{
>> > + va_list ap;
>> > + cell_t slots[16];
>> > + int i = 0;
>> > + int status;
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + status = OFW_INTERPRET(ofw_obj, cmd, nreturns, slots);
>> > + if (status == -1)
>> > + return (status);
>> > +
>> > + va_start(ap, nreturns);
>> > + while (i < nreturns)
>> > + *va_arg(ap, cell_t *) = slots[i++];
>> > + va_end(ap);
>> > +
>> > + return (status);
>> > +}
>> > +
>> > +/*
>> > + * Device tree functions
>> > + */
>> > +
>> > +/* Return the next sibling of this node or 0. */
>> > +phandle_t
>> > +OF_peer(phandle_t node)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (0);
>> > +
>> > + return (OFW_PEER(ofw_obj, node));
>> > +}
>> > +
>> > +/* Return the first child of this node or 0. */
>> > +phandle_t
>> > +OF_child(phandle_t node)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (0);
>> > +
>> > + return (OFW_CHILD(ofw_obj, node));
>> > +}
>> > +
>> > +/* Return the parent of this node or 0. */
>> > +phandle_t
>> > +OF_parent(phandle_t node)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (0);
>> > +
>> > + return (OFW_PARENT(ofw_obj, node));
>> > +}
>> > +
>> > +/* Return the package handle that corresponds to an instance handle. */
>> > +phandle_t
>> > +OF_instance_to_package(ihandle_t instance)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_INSTANCE_TO_PACKAGE(ofw_obj, instance));
>> > +}
>> > +
>> > +/* Get the length of a property of a package. */
>> > +ssize_t
>> > +OF_getproplen(phandle_t package, const char *propname)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_GETPROPLEN(ofw_obj, package, propname));
>> > +}
>> > +
>> > +/* Check existence of a property of a package. */
>> > +int
>> > +OF_hasprop(phandle_t package, const char *propname)
>> > +{
>> > +
>> > + return (OF_getproplen(package, propname) >= 0 ? 1 : 0);
>> > +}
>> > +
>> > +/* Get the value of a property of a package. */
>> > +ssize_t
>> > +OF_getprop(phandle_t package, const char *propname, void *buf, size_t buflen)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen));
>> > +}
>> > +
>> > +ssize_t
>> > +OF_getencprop(phandle_t node, const char *propname, pcell_t *buf, size_t len)
>> > +{
>> > + ssize_t retval;
>> > + int i;
>> > +
>> > + KASSERT(len % 4 == 0, ("Need a multiple of 4 bytes"));
>> > +
>> > + retval = OF_getprop(node, propname, buf, len);
>> > + if (retval <= 0)
>> > + return (retval);
>> > +
>> > + for (i = 0; i < len/4; i++)
>> > + buf[i] = be32toh(buf[i]);
>> > +
>> > + return (retval);
>> > +}
>> > +
>> > +/*
>> > + * Recursively search the node and its parent for the given property, working
>> > + * downward from the node to the device tree root. Returns the value of the
>> > + * first match.
>> > + */
>> > +ssize_t
>> > +OF_searchprop(phandle_t node, const char *propname, void *buf, size_t len)
>> > +{
>> > + ssize_t rv;
>> > +
>> > + for (; node != 0; node = OF_parent(node))
>> > + if ((rv = OF_getprop(node, propname, buf, len)) != -1)
>> > + return (rv);
>> > + return (-1);
>> > +}
>> > +
>> > +ssize_t
>> > +OF_searchencprop(phandle_t node, const char *propname, pcell_t *buf, size_t len)
>> > +{
>> > + ssize_t rv;
>> > +
>> > + for (; node != 0; node = OF_parent(node))
>> > + if ((rv = OF_getencprop(node, propname, buf, len)) != -1)
>> > + return (rv);
>> > + return (-1);
>> > +}
>> > +
>> > +/*
>> > + * Store the value of a property of a package into newly allocated memory
>> > + * (using the M_OFWPROP malloc pool and M_WAITOK).
>> > + */
>> > +ssize_t
>> > +OF_getprop_alloc(phandle_t package, const char *propname, void **buf)
>> > +{
>> > + int len;
>> > +
>> > + *buf = NULL;
>> > + if ((len = OF_getproplen(package, propname)) == -1)
>> > + return (-1);
>> > +
>> > + if (len > 0) {
>> > + *buf = malloc(len, M_OFWPROP, M_WAITOK);
>> > + if (OF_getprop(package, propname, *buf, len) == -1) {
>> > + free(*buf, M_OFWPROP);
>> > + *buf = NULL;
>> > + return (-1);
>> > + }
>> > + }
>> > + return (len);
>> > +}
>> > +
>> > +/*
>> > + * Store the value of a property of a package into newly allocated memory
>> > + * (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
>> > + * single element, the number of elements is return in number.
>> > + */
>> > +ssize_t
>> > +OF_getprop_alloc_multi(phandle_t package, const char *propname, int elsz, void **buf)
>> > +{
>> > + int len;
>> > +
>> > + *buf = NULL;
>> > + if ((len = OF_getproplen(package, propname)) == -1 ||
>> > + len % elsz != 0)
>> > + return (-1);
>> > +
>> > + if (len > 0) {
>> > + *buf = malloc(len, M_OFWPROP, M_WAITOK);
>> > + if (OF_getprop(package, propname, *buf, len) == -1) {
>> > + free(*buf, M_OFWPROP);
>> > + *buf = NULL;
>> > + return (-1);
>> > + }
>> > + }
>> > + return (len / elsz);
>> > +}
>> > +
>> > +ssize_t
>> > +OF_getencprop_alloc(phandle_t package, const char *name, void **buf)
>> > +{
>> > + ssize_t ret;
>> > +
>> > + ret = OF_getencprop_alloc_multi(package, name, sizeof(pcell_t),
>> > + buf);
>> > + if (ret < 0)
>> > + return (ret);
>> > + else
>> > + return (ret * sizeof(pcell_t));
>> > +}
>> > +
>> > +ssize_t
>> > +OF_getencprop_alloc_multi(phandle_t package, const char *name, int elsz,
>> > + void **buf)
>> > +{
>> > + ssize_t retval;
>> > + pcell_t *cell;
>> > + int i;
>> > +
>> > + retval = OF_getprop_alloc_multi(package, name, elsz, buf);
>> > + if (retval == -1)
>> > + return (-1);
>> > +
>> > + cell = *buf;
>> > + for (i = 0; i < retval * elsz / 4; i++)
>> > + cell[i] = be32toh(cell[i]);
>> > +
>> > + return (retval);
>> > +}
>> > +
>> > +/* Free buffer allocated by OF_getencprop_alloc or OF_getprop_alloc */
>> > +void OF_prop_free(void *buf)
>> > +{
>> > +
>> > + free(buf, M_OFWPROP);
>> > +}
>> > +
>> > +/* Get the next property of a package. */
>> > +int
>> > +OF_nextprop(phandle_t package, const char *previous, char *buf, size_t size)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_NEXTPROP(ofw_obj, package, previous, buf, size));
>> > +}
>> > +
>> > +/* Set the value of a property of a package. */
>> > +int
>> > +OF_setprop(phandle_t package, const char *propname, const void *buf, size_t len)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_SETPROP(ofw_obj, package, propname, buf,len));
>> > +}
>> > +
>> > +/* Convert a device specifier to a fully qualified pathname. */
>> > +ssize_t
>> > +OF_canon(const char *device, char *buf, size_t len)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_CANON(ofw_obj, device, buf, len));
>> > +}
>> > +
>> > +/* Return a package handle for the specified device. */
>> > +phandle_t
>> > +OF_finddevice(const char *device)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_FINDDEVICE(ofw_obj, device));
>> > +}
>> > +
>> > +/* Return the fully qualified pathname corresponding to an instance. */
>> > +ssize_t
>> > +OF_instance_to_path(ihandle_t instance, char *buf, size_t len)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_INSTANCE_TO_PATH(ofw_obj, instance, buf, len));
>> > +}
>> > +
>> > +/* Return the fully qualified pathname corresponding to a package. */
>> > +ssize_t
>> > +OF_package_to_path(phandle_t package, char *buf, size_t len)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_PACKAGE_TO_PATH(ofw_obj, package, buf, len));
>> > +}
>> > +
>> > +/* Look up effective phandle (see FDT/PAPR spec) */
>> > +static phandle_t
>> > +OF_child_xref_phandle(phandle_t parent, phandle_t xref)
>> > +{
>> > + phandle_t child, rxref;
>> > +
>> > + /*
>> > + * Recursively descend from parent, looking for a node with a property
>> > + * named either "phandle", "ibm,phandle", or "linux,phandle" that
>> > + * matches the xref we are looking for.
>> > + */
>> > +
>> > + for (child = OF_child(parent); child != 0; child = OF_peer(child)) {
>> > + rxref = OF_child_xref_phandle(child, xref);
>> > + if (rxref != -1)
>> > + return (rxref);
>> > +
>> > + if (OF_getencprop(child, "phandle", &rxref, sizeof(rxref)) ==
>> > + -1 && OF_getencprop(child, "ibm,phandle", &rxref,
>> > + sizeof(rxref)) == -1 && OF_getencprop(child,
>> > + "linux,phandle", &rxref, sizeof(rxref)) == -1)
>> > + continue;
>> > +
>> > + if (rxref == xref)
>> > + return (child);
>> > + }
>> > +
>> > + return (-1);
>> > +}
>> > +
>> > +phandle_t
>> > +OF_node_from_xref(phandle_t xref)
>> > +{
>> > + struct xrefinfo *xi;
>> > + phandle_t node;
>> > +
>> > + if (xref_init_done) {
>> > + if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL)
>> > + return (xref);
>> > + return (xi->node);
>> > + }
>> > +
>> > + if ((node = OF_child_xref_phandle(OF_peer(0), xref)) == -1)
>> > + return (xref);
>> > + return (node);
>> > +}
>> > +
>> > +phandle_t
>> > +OF_xref_from_node(phandle_t node)
>> > +{
>> > + struct xrefinfo *xi;
>> > + phandle_t xref;
>> > +
>> > + if (xref_init_done) {
>> > + if ((xi = xrefinfo_find(node, FIND_BY_NODE)) == NULL)
>> > + return (node);
>> > + return (xi->xref);
>> > + }
>> > +
>> > + if (OF_getencprop(node, "phandle", &xref, sizeof(xref)) == -1 &&
>> > + OF_getencprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 &&
>> > + OF_getencprop(node, "linux,phandle", &xref, sizeof(xref)) == -1)
>> > + return (node);
>> > + return (xref);
>> > +}
>> > +
>> > +device_t
>> > +OF_device_from_xref(phandle_t xref)
>> > +{
>> > + struct xrefinfo *xi;
>> > +
>> > + if (xref_init_done) {
>> > + if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL)
>> > + return (NULL);
>> > + return (xi->dev);
>> > + }
>> > + panic("Attempt to find device before xreflist_init");
>> > +}
>> > +
>> > +phandle_t
>> > +OF_xref_from_device(device_t dev)
>> > +{
>> > + struct xrefinfo *xi;
>> > +
>> > + if (xref_init_done) {
>> > + if ((xi = xrefinfo_find((uintptr_t)dev, FIND_BY_DEV)) == NULL)
>> > + return (0);
>> > + return (xi->xref);
>> > + }
>> > + panic("Attempt to find xref before xreflist_init");
>> > +}
>> > +
>> > +int
>> > +OF_device_register_xref(phandle_t xref, device_t dev)
>> > +{
>> > + struct xrefinfo *xi;
>> > +
>> > + /*
>> > + * If the given xref handle doesn't already exist in the list then we
>> > + * add a list entry. In theory this can only happen on a system where
>> > + * nodes don't contain phandle properties and xref and node handles are
>> > + * synonymous, so the xref handle is added as the node handle as well.
>> > + */
>> > + if (xref_init_done) {
>> > + if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL)
>> > + xrefinfo_add(xref, xref, dev);
>> > + else
>> > + xi->dev = dev;
>> > + return (0);
>> > + }
>> > + panic("Attempt to register device before xreflist_init");
>> > +}
>> > +
>> > +/* Call the method in the scope of a given instance. */
>> > +int
>> > +OF_call_method(const char *method, ihandle_t instance, int nargs, int nreturns,
>> > + ...)
>> > +{
>> > + va_list ap;
>> > + cell_t args_n_results[12];
>> > + int n, status;
>> > +
>> > + if (nargs > 6 || ofw_def_impl == NULL)
>> > + return (-1);
>> > + va_start(ap, nreturns);
>> > + for (n = 0; n < nargs; n++)
>> > + args_n_results[n] = va_arg(ap, cell_t);
>> > +
>> > + status = OFW_CALL_METHOD(ofw_obj, instance, method, nargs, nreturns,
>> > + args_n_results);
>> > + if (status != 0)
>> > + return (status);
>> > +
>> > + for (; n < nargs + nreturns; n++)
>> > + *va_arg(ap, cell_t *) = args_n_results[n];
>> > + va_end(ap);
>> > + return (0);
>> > +}
>> > +
>> > +/*
>> > + * Device I/O functions
>> > + */
>> > +
>> > +/* Open an instance for a device. */
>> > +ihandle_t
>> > +OF_open(const char *device)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (0);
>> > +
>> > + return (OFW_OPEN(ofw_obj, device));
>> > +}
>> > +
>> > +/* Close an instance. */
>> > +void
>> > +OF_close(ihandle_t instance)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return;
>> > +
>> > + OFW_CLOSE(ofw_obj, instance);
>> > +}
>> > +
>> > +/* Read from an instance. */
>> > +ssize_t
>> > +OF_read(ihandle_t instance, void *addr, size_t len)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_READ(ofw_obj, instance, addr, len));
>> > +}
>> > +
>> > +/* Write to an instance. */
>> > +ssize_t
>> > +OF_write(ihandle_t instance, const void *addr, size_t len)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_WRITE(ofw_obj, instance, addr, len));
>> > +}
>> > +
>> > +/* Seek to a position. */
>> > +int
>> > +OF_seek(ihandle_t instance, uint64_t pos)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return (-1);
>> > +
>> > + return (OFW_SEEK(ofw_obj, instance, pos));
>> > +}
>> > +
>> > +/*
>> > + * Memory functions
>> > + */
>> > +
>> > +/* Claim an area of memory. */
>> > +void *
>> > +OF_claim(void *virt, size_t size, u_int align)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return ((void *)-1);
>> > +
>> > + return (OFW_CLAIM(ofw_obj, virt, size, align));
>> > +}
>> > +
>> > +/* Release an area of memory. */
>> > +void
>> > +OF_release(void *virt, size_t size)
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return;
>> > +
>> > + OFW_RELEASE(ofw_obj, virt, size);
>> > +}
>> > +
>> > +/*
>> > + * Control transfer functions
>> > + */
>> > +
>> > +/* Suspend and drop back to the Open Firmware interface. */
>> > +void
>> > +OF_enter()
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + return;
>> > +
>> > + OFW_ENTER(ofw_obj);
>> > +}
>> > +
>> > +/* Shut down and drop back to the Open Firmware interface. */
>> > +void
>> > +OF_exit()
>> > +{
>> > +
>> > + if (ofw_def_impl == NULL)
>> > + panic("OF_exit: Open Firmware not available");
>> > +
>> > + /* Should not return */
>> > + OFW_EXIT(ofw_obj);
>> > +
>> > + for (;;) /* just in case */
>> > + ;
>> > +}
>> > \ No newline at end of file
>> > --
>> > 2.17.1
>> >
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