165 lines
4.3 KiB
C
165 lines
4.3 KiB
C
/*-
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* Copyright (C) 2012 Margarida Gouveia
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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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* without modification, immediately at the beginning of the file.
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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/reboot.h>
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#include <sys/smp.h>
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#include <sys/fbio.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/hid.h>
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#include <machine/platform.h>
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#include <machine/platformvar.h>
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#include <machine/pmap.h>
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#include <machine/smp.h>
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#include <machine/spr.h>
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#include <machine/vmparam.h>
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#include <powerpc/wii/wii_fbreg.h>
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#include <powerpc/wii/wii_ipcreg.h>
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#include "platform_if.h"
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static int wii_probe(platform_t);
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static int wii_attach(platform_t);
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static void wii_mem_regions(platform_t, struct mem_region **,
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int *, struct mem_region **, int *);
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static unsigned long wii_timebase_freq(platform_t, struct cpuref *);
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static void wii_reset(platform_t);
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static void wii_cpu_idle(sbintime_t);
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extern void wiibus_reset_system(void);
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static platform_method_t wii_methods[] = {
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PLATFORMMETHOD(platform_probe, wii_probe),
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PLATFORMMETHOD(platform_attach, wii_attach),
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PLATFORMMETHOD(platform_mem_regions, wii_mem_regions),
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PLATFORMMETHOD(platform_timebase_freq, wii_timebase_freq),
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PLATFORMMETHOD(platform_reset, wii_reset),
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PLATFORMMETHOD_END
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};
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static platform_def_t wii_platform = {
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"wii",
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wii_methods,
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0
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};
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PLATFORM_DEF(wii_platform);
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static int
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wii_probe(platform_t plat)
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{
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register_t vers = mfpvr();
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/*
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* The Wii includes a PowerPC 750CL with custom modifications
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* ("Broadway").
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* For now, we just assume that if we are running on a
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* PowerPC 750CL, then this platform is a Nintendo Wii.
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*/
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if ((vers & 0xfffff0e0) == (MPC750 << 16 | MPC750CL))
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return (BUS_PROBE_SPECIFIC);
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return (ENXIO);
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}
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static int
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wii_attach(platform_t plat)
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{
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cpu_idle_hook = wii_cpu_idle;
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return (0);
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}
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#define MEM_REGIONS 2
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static struct mem_region avail_regions[MEM_REGIONS];
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static void
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wii_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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/* 24MB 1T-SRAM */
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avail_regions[0].mr_start = 0x00000000;
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avail_regions[0].mr_size = 0x01800000;
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/*
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* Reserve space for the framebuffer which is located
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* at the end of this 24MB memory region. See wii_fbreg.h.
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*/
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avail_regions[0].mr_size -= WIIFB_FB_LEN;
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/* 64MB GDDR3 SDRAM */
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avail_regions[1].mr_start = 0x10000000;
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avail_regions[1].mr_size = 0x04000000;
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/*
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* Reserve space for the DSP.
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*/
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avail_regions[1].mr_start += 0x4000;
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avail_regions[1].mr_size -= 0x4000;
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/*
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* Reserve space for the IOS I/O memory.
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*/
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avail_regions[1].mr_size -= WIIIPC_IOH_LEN + 1;
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*phys = *avail = avail_regions;
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*physsz = *availsz = MEM_REGIONS;
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}
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static u_long
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wii_timebase_freq(platform_t plat, struct cpuref *cpuref)
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{
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/* Bus Frequency (243MHz) / 4 */
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return (60750000);
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}
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static void
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wii_reset(platform_t plat __unused)
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{
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wiibus_reset_system();
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}
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static void
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wii_cpu_idle(sbintime_t sbt)
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{
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}
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