31c82d0332
"available" ranges, not the "physical" ranges. Clean up some of the bootstrap code in the process. Submitted by: Peter Grehan <peterg@ptree32.com.au>
201 lines
6.3 KiB
C
201 lines
6.3 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, int *memsz,
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struct mem_region **availp, int *availsz)
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{
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int phandle;
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int asz, msz;
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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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|| (msz = OF_getprop(phandle, "reg",
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OFmem, sizeof OFmem[0] * OFMEM_REGIONS))
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<= 0
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|| (asz = 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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*memsz = msz / sizeof(struct mem_region);
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*availp = OFavail;
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*availsz = asz / sizeof(struct mem_region);
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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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__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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