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86 lines
3.0 KiB
C
86 lines
3.0 KiB
C
/*-
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* Copyright (c) 2005 Rink Springer
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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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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* $FreeBSD$
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*/
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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/eventhandler.h>
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#include <sys/reboot.h>
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#include <machine/xbox.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#ifndef I686_CPU
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#error You must have a I686_CPU in your kernel if you want to make an XBOX-compatible kernel
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#endif
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static void
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xbox_poweroff(void* junk, int howto)
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{
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if (!(howto & RB_POWEROFF))
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return;
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pic16l_poweroff();
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}
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static void
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xbox_init(void)
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{
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char* ptr;
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if (!arch_i386_is_xbox)
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return;
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/* register our poweroff function */
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EVENTHANDLER_REGISTER (shutdown_final, xbox_poweroff, NULL,
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SHUTDOWN_PRI_LAST);
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/*
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* Some XBOX loaders, such as Cromwell, have a flaw which cause the
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* nve(4) driver to fail attaching to the NIC.
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*
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* This is because they leave the NIC running; this will cause the
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* Nvidia driver to fail as the NIC does not return any sensible
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* values and thus fails attaching (using an error 0x5, this means
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* it cannot find a valid PHY)
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*
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* We bluntly tell the NIC to stop whatever it's doing; this makes
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* nve(4) attach correctly. As the NIC always resides at
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* 0xfef00000-0xfef003ff on an XBOX, we simply hardcode this address.
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*/
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ptr = pmap_mapdev (0xfef00000, 0x400);
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*(uint32_t*)(ptr + 0x188) = 0; /* clear adapter control field */
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pmap_unmapdev ((vm_offset_t)ptr, 0x400);
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}
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/*
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* This must be called before the drivers, as the if_nve(4) driver will fail
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* if we do not do this in advance.
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*/
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SYSINIT(xbox, SI_SUB_DRIVERS, SI_ORDER_FIRST, xbox_init, NULL)
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