6f8905baf6
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
163 lines
3.9 KiB
C
163 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008-2012 Semihalf.
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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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*
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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 THE AUTHOR ``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 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF 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 <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/pcpu.h>
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#include <sys/proc.h>
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#include <sys/smp.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/platform.h>
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#include <machine/platformvar.h>
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#include "platform_if.h"
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extern uint32_t *bootinfo;
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static int bare_probe(platform_t);
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static void bare_mem_regions(platform_t, struct mem_region *phys, int *physsz,
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struct mem_region *avail, int *availsz);
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static u_long bare_timebase_freq(platform_t, struct cpuref *cpuref);
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static void bare_reset(platform_t);
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static platform_method_t bare_methods[] = {
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PLATFORMMETHOD(platform_probe, bare_probe),
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PLATFORMMETHOD(platform_mem_regions, bare_mem_regions),
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PLATFORMMETHOD(platform_timebase_freq, bare_timebase_freq),
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PLATFORMMETHOD(platform_reset, bare_reset),
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PLATFORMMETHOD_END
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};
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static platform_def_t bare_platform = {
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"bare",
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bare_methods,
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0
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};
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PLATFORM_DEF(bare_platform);
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static int
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bare_probe(platform_t plat)
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{
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if (OF_peer(0) == -1) /* Needs device tree to work */
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return (ENXIO);
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return (BUS_PROBE_GENERIC);
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}
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void
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bare_mem_regions(platform_t plat, struct mem_region *phys, int *physsz,
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struct mem_region *avail, int *availsz)
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{
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ofw_mem_regions(phys, physsz, avail, availsz);
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}
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static u_long
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bare_timebase_freq(platform_t plat, struct cpuref *cpuref)
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{
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u_long ticks;
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phandle_t cpus, child;
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pcell_t freq;
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if (bootinfo != NULL) {
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if (bootinfo[0] == 1) {
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/* Backward compatibility. See 8-STABLE. */
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ticks = bootinfo[3] >> 3;
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} else {
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/* Compatibility with Juniper's loader. */
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ticks = bootinfo[5] >> 3;
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}
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} else
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ticks = 0;
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if ((cpus = OF_finddevice("/cpus")) == -1)
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goto out;
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if ((child = OF_child(cpus)) == 0)
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goto out;
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switch (OF_getproplen(child, "timebase-frequency")) {
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case 4:
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{
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uint32_t tbase;
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OF_getprop(child, "timebase-frequency", &tbase, sizeof(tbase));
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ticks = tbase;
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return (ticks);
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}
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case 8:
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{
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uint64_t tbase;
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OF_getprop(child, "timebase-frequency", &tbase, sizeof(tbase));
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ticks = tbase;
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return (ticks);
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}
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default:
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break;
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}
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freq = 0;
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if (OF_getprop(child, "bus-frequency", (void *)&freq,
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sizeof(freq)) <= 0)
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goto out;
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/*
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* Time Base and Decrementer are updated every 8 CCB bus clocks.
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* HID0[SEL_TBCLK] = 0
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*/
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if (freq != 0)
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ticks = freq / 8;
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out:
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if (ticks <= 0)
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panic("Unable to determine timebase frequency!");
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return (ticks);
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}
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static void
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bare_reset(platform_t plat)
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{
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printf("Reset failed...\n");
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while (1)
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;
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}
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