5cf5b4b58d
reach single user mode using a memory disk device as the file system. This port includes the framebuffer driver, the PIC driver, a platform driver and the GPIO driver. The IPC driver (to talk to IOS kernels) is not yet written but there's a placeholder for it. There are still some MMU problems and to get a working system you need to patch locore32.S. Since we haven't found the best way yet to address that problem, we're not committing those changes yet. The problem is related to the different BAT layout on the Wii and to the fact that the Homebrew loader doesn't clean up the special registers (including the 8 BATs) before passing control to us. You'll need a Wii with Homebrew loader and a TV that can do NTSC (for now). Submitted by: Margarida Gouveia
103 lines
2.9 KiB
C
103 lines
2.9 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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* 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,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* 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/module.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <machine/platform.h>
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#include <machine/intr_machdep.h>
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#include <machine/resource.h>
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#include <powerpc/wii/wii_ipcreg.h>
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/*
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* Driver to interface with the Wii's IOS. IOS are small "microkernels" that run
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* on the Broadway GPU and provide access to system services like USB.
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*/
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static int wiiipc_probe(device_t);
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static int wiiipc_attach(device_t);
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struct wiiipc_softc {
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};
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static device_method_t wiiipc_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, wiiipc_probe),
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DEVMETHOD(device_attach, wiiipc_attach),
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{ 0, 0 },
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};
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static driver_t wiiipc_driver = {
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"wiiipc",
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wiiipc_methods,
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sizeof(struct wiiipc_softc)
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};
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static devclass_t wiiipc_devclass;
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DRIVER_MODULE(wiiipc, wiibus, wiiipc_driver, wiiipc_devclass, 0, 0);
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static int
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wiiipc_probe(device_t dev)
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{
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device_set_desc(dev, "Nintendo Wii IOS IPC");
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return (BUS_PROBE_NOWILDCARD);
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}
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static int
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wiiipc_attach(device_t dev)
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{
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struct wiiipc_softc *sc;
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sc = device_get_softc(dev);
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#ifdef notyet
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sc->sc_dev = dev;
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sc->sc_rrid = 0;
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sc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->sc_rrid, RF_ACTIVE);
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if (sc->sc_rres == NULL) {
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device_printf(dev, "could not alloc mem resource\n");
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return (ENXIO);
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}
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sc->sc_bt = rman_get_bustag(sc->sc_rres);
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sc->sc_bh = rman_get_bushandle(sc->sc_rres);
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#endif
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return (0);
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}
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