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