5244eac968
boot sequence. The new pmap.c is based on NetBSD's newer pmap.c (for the mpc6xx processors) which is 70% faster than the older code that the original pmap.c was based on. It has also been based on the framework established by jake's initial sparc64 pmap.c. There is no change to how far the kernel gets (it makes it to the mountroot prompt in psim) but the new pmap code is a lot cleaner. Obtained from: NetBSD (pmap code)
199 lines
6.2 KiB
C
199 lines
6.2 KiB
C
/*
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* Copyright (C) 1996 Wolfgang Solfrank.
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* Copyright (C) 1996 TooLs GmbH.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH 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 TOOLS GMBH ``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 TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: ofw_machdep.c,v 1.5 2000/05/23 13:25:43 tsubai Exp $
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/disk.h>
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#include <sys/disklabel.h>
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#include <sys/fcntl.h>
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#include <sys/malloc.h>
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#include <sys/stat.h>
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#include <dev/ofw/openfirm.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/vm_page.h>
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#include <machine/powerpc.h>
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#define OFMEM_REGIONS 32
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static struct mem_region OFmem[OFMEM_REGIONS + 1], OFavail[OFMEM_REGIONS + 3];
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extern long ofmsr;
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extern struct pmap ofw_pmap;
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extern int pmap_bootstrapped;
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static int (*ofwcall)(void *);
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/*
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* This is called during powerpc_init, before the system is really initialized.
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* It shall provide the total and the available regions of RAM.
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* Both lists must have a zero-size entry as terminator.
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* The available regions need not take the kernel into account, but needs
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* to provide space for two additional entry beyond the terminating one.
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*/
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void
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mem_regions(struct mem_region **memp, struct mem_region **availp)
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{
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int phandle /*, i, j, cnt*/;
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/*
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* Get memory.
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*/
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if ((phandle = OF_finddevice("/memory")) == -1
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|| OF_getprop(phandle, "reg",
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OFmem, sizeof OFmem[0] * OFMEM_REGIONS)
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<= 0
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|| OF_getprop(phandle, "available",
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OFavail, sizeof OFavail[0] * OFMEM_REGIONS)
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<= 0)
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panic("no memory?");
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*memp = OFmem;
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*availp = OFavail;
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}
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void
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set_openfirm_callback(int (*openfirm)(void *))
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{
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ofwcall = openfirm;
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}
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int
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openfirmware(void *args)
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{
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long oldmsr;
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int result;
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u_int srsave[16];
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if (pmap_bootstrapped) {
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__asm __volatile("mfsr %0,0" : "=r"(srsave[0]));
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__asm __volatile("mfsr %0,1" : "=r"(srsave[1]));
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__asm __volatile("mfsr %0,2" : "=r"(srsave[2]));
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__asm __volatile("mfsr %0,3" : "=r"(srsave[3]));
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__asm __volatile("mfsr %0,4" : "=r"(srsave[4]));
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__asm __volatile("mfsr %0,5" : "=r"(srsave[5]));
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__asm __volatile("mfsr %0,6" : "=r"(srsave[6]));
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__asm __volatile("mfsr %0,7" : "=r"(srsave[7]));
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__asm __volatile("mfsr %0,8" : "=r"(srsave[8]));
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__asm __volatile("mfsr %0,9" : "=r"(srsave[9]));
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__asm __volatile("mfsr %0,10" : "=r"(srsave[10]));
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__asm __volatile("mfsr %0,11" : "=r"(srsave[11]));
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__asm __volatile("mfsr %0,12" : "=r"(srsave[12]));
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__asm __volatile("mfsr %0,13" : "=r"(srsave[13]));
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__asm __volatile("mfsr %0,14" : "=r"(srsave[14]));
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__asm __volatile("mfsr %0,15" : "=r"(srsave[15]));
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__asm __volatile("mtsr 0,%0" :: "r"(ofw_pmap.pm_sr[0]));
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__asm __volatile("mtsr 1,%0" :: "r"(ofw_pmap.pm_sr[1]));
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__asm __volatile("mtsr 2,%0" :: "r"(ofw_pmap.pm_sr[2]));
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__asm __volatile("mtsr 3,%0" :: "r"(ofw_pmap.pm_sr[3]));
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__asm __volatile("mtsr 4,%0" :: "r"(ofw_pmap.pm_sr[4]));
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__asm __volatile("mtsr 5,%0" :: "r"(ofw_pmap.pm_sr[5]));
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__asm __volatile("mtsr 6,%0" :: "r"(ofw_pmap.pm_sr[6]));
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__asm __volatile("mtsr 7,%0" :: "r"(ofw_pmap.pm_sr[7]));
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__asm __volatile("mtsr 8,%0" :: "r"(ofw_pmap.pm_sr[8]));
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__asm __volatile("mtsr 9,%0" :: "r"(ofw_pmap.pm_sr[9]));
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__asm __volatile("mtsr 10,%0" :: "r"(ofw_pmap.pm_sr[10]));
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__asm __volatile("mtsr 11,%0" :: "r"(ofw_pmap.pm_sr[11]));
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__asm __volatile("mtsr 12,%0" :: "r"(ofw_pmap.pm_sr[12]));
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__asm __volatile("mtsr 13,%0" :: "r"(ofw_pmap.pm_sr[13]));
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__asm __volatile("mtsr 14,%0" :: "r"(ofw_pmap.pm_sr[14]));
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__asm __volatile("mtsr 15,%0" :: "r"(ofw_pmap.pm_sr[15]));
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}
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ofmsr |= PSL_RI|PSL_EE;
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__asm __volatile( "\t"
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"sync\n\t"
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"mfmsr %0\n\t"
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"mtmsr %1\n\t"
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"isync\n"
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: "=r" (oldmsr)
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: "r" (ofmsr)
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);
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result = ofwcall(args);
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__asm( "\t"
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"mtmsr %0\n\t"
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"isync\n"
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: : "r" (oldmsr)
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);
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if (pmap_bootstrapped) {
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__asm __volatile("mtsr 0,%0" :: "r"(srsave[0]));
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__asm __volatile("mtsr 1,%0" :: "r"(srsave[1]));
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__asm __volatile("mtsr 2,%0" :: "r"(srsave[2]));
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__asm __volatile("mtsr 3,%0" :: "r"(srsave[3]));
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__asm __volatile("mtsr 4,%0" :: "r"(srsave[4]));
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__asm __volatile("mtsr 5,%0" :: "r"(srsave[5]));
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__asm __volatile("mtsr 6,%0" :: "r"(srsave[6]));
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__asm __volatile("mtsr 7,%0" :: "r"(srsave[7]));
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__asm __volatile("mtsr 8,%0" :: "r"(srsave[8]));
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__asm __volatile("mtsr 9,%0" :: "r"(srsave[9]));
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__asm __volatile("mtsr 10,%0" :: "r"(srsave[10]));
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__asm __volatile("mtsr 11,%0" :: "r"(srsave[11]));
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__asm __volatile("mtsr 12,%0" :: "r"(srsave[12]));
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__asm __volatile("mtsr 13,%0" :: "r"(srsave[13]));
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__asm __volatile("mtsr 14,%0" :: "r"(srsave[14]));
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__asm __volatile("mtsr 15,%0" :: "r"(srsave[15]));
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__asm __volatile("sync");
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}
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return (result);
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}
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void
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ppc_exit()
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{
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OF_exit();
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}
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void
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ppc_boot(str)
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char *str;
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{
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OF_boot(str);
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}
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