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/*
* Copyright (C) 1996 Wolfgang Solfrank.
* Copyright (C) 1996 TooLs GmbH.
* 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.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*
* $NetBSD: ofw_machdep.c,v 1.5 2000/05/23 13:25:43 tsubai Exp $
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/disk.h>
#include <sys/disklabel.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/stat.h>
#include <dev/ofw/openfirm.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_page.h>
#include <machine/powerpc.h>
#define OFMEM_REGIONS 32
static struct mem_region OFmem[OFMEM_REGIONS + 1], OFavail[OFMEM_REGIONS + 3];
extern long ofmsr;
extern struct pmap ofw_pmap;
extern int pmap_bootstrapped;
static int (*ofwcall)(void *);
/*
* This is called during powerpc_init, before the system is really initialized.
* It shall provide the total and the available regions of RAM.
* Both lists must have a zero-size entry as terminator.
* The available regions need not take the kernel into account, but needs
* to provide space for two additional entry beyond the terminating one.
*/
void
mem_regions(struct mem_region **memp, struct mem_region **availp)
{
int phandle /*, i, j, cnt*/;
/*
* Get memory.
*/
if ((phandle = OF_finddevice("/memory")) == -1
|| OF_getprop(phandle, "reg",
OFmem, sizeof OFmem[0] * OFMEM_REGIONS)
<= 0
|| OF_getprop(phandle, "available",
OFavail, sizeof OFavail[0] * OFMEM_REGIONS)
<= 0)
panic("no memory?");
*memp = OFmem;
*availp = OFavail;
}
void
set_openfirm_callback(int (*openfirm)(void *))
{
ofwcall = openfirm;
}
int
openfirmware(void *args)
{
long oldmsr;
int result;
u_int srsave[16];
if (pmap_bootstrapped) {
__asm __volatile("mfsr %0,0" : "=r"(srsave[0]));
__asm __volatile("mfsr %0,1" : "=r"(srsave[1]));
__asm __volatile("mfsr %0,2" : "=r"(srsave[2]));
__asm __volatile("mfsr %0,3" : "=r"(srsave[3]));
__asm __volatile("mfsr %0,4" : "=r"(srsave[4]));
__asm __volatile("mfsr %0,5" : "=r"(srsave[5]));
__asm __volatile("mfsr %0,6" : "=r"(srsave[6]));
__asm __volatile("mfsr %0,7" : "=r"(srsave[7]));
__asm __volatile("mfsr %0,8" : "=r"(srsave[8]));
__asm __volatile("mfsr %0,9" : "=r"(srsave[9]));
__asm __volatile("mfsr %0,10" : "=r"(srsave[10]));
__asm __volatile("mfsr %0,11" : "=r"(srsave[11]));
__asm __volatile("mfsr %0,12" : "=r"(srsave[12]));
__asm __volatile("mfsr %0,13" : "=r"(srsave[13]));
__asm __volatile("mfsr %0,14" : "=r"(srsave[14]));
__asm __volatile("mfsr %0,15" : "=r"(srsave[15]));
__asm __volatile("mtsr 0,%0" :: "r"(ofw_pmap.pm_sr[0]));
__asm __volatile("mtsr 1,%0" :: "r"(ofw_pmap.pm_sr[1]));
__asm __volatile("mtsr 2,%0" :: "r"(ofw_pmap.pm_sr[2]));
__asm __volatile("mtsr 3,%0" :: "r"(ofw_pmap.pm_sr[3]));
__asm __volatile("mtsr 4,%0" :: "r"(ofw_pmap.pm_sr[4]));
__asm __volatile("mtsr 5,%0" :: "r"(ofw_pmap.pm_sr[5]));
__asm __volatile("mtsr 6,%0" :: "r"(ofw_pmap.pm_sr[6]));
__asm __volatile("mtsr 7,%0" :: "r"(ofw_pmap.pm_sr[7]));
__asm __volatile("mtsr 8,%0" :: "r"(ofw_pmap.pm_sr[8]));
__asm __volatile("mtsr 9,%0" :: "r"(ofw_pmap.pm_sr[9]));
__asm __volatile("mtsr 10,%0" :: "r"(ofw_pmap.pm_sr[10]));
__asm __volatile("mtsr 11,%0" :: "r"(ofw_pmap.pm_sr[11]));
__asm __volatile("mtsr 12,%0" :: "r"(ofw_pmap.pm_sr[12]));
__asm __volatile("mtsr 13,%0" :: "r"(ofw_pmap.pm_sr[13]));
__asm __volatile("mtsr 14,%0" :: "r"(ofw_pmap.pm_sr[14]));
__asm __volatile("mtsr 15,%0" :: "r"(ofw_pmap.pm_sr[15]));
}
ofmsr |= PSL_RI|PSL_EE;
__asm __volatile( "\t"
"sync\n\t"
"mfmsr %0\n\t"
"mtmsr %1\n\t"
"isync\n"
: "=r" (oldmsr)
: "r" (ofmsr)
);
result = ofwcall(args);
__asm( "\t"
"mtmsr %0\n\t"
"isync\n"
: : "r" (oldmsr)
);
if (pmap_bootstrapped) {
__asm __volatile("mtsr 0,%0" :: "r"(srsave[0]));
__asm __volatile("mtsr 1,%0" :: "r"(srsave[1]));
__asm __volatile("mtsr 2,%0" :: "r"(srsave[2]));
__asm __volatile("mtsr 3,%0" :: "r"(srsave[3]));
__asm __volatile("mtsr 4,%0" :: "r"(srsave[4]));
__asm __volatile("mtsr 5,%0" :: "r"(srsave[5]));
__asm __volatile("mtsr 6,%0" :: "r"(srsave[6]));
__asm __volatile("mtsr 7,%0" :: "r"(srsave[7]));
__asm __volatile("mtsr 8,%0" :: "r"(srsave[8]));
__asm __volatile("mtsr 9,%0" :: "r"(srsave[9]));
__asm __volatile("mtsr 10,%0" :: "r"(srsave[10]));
__asm __volatile("mtsr 11,%0" :: "r"(srsave[11]));
__asm __volatile("mtsr 12,%0" :: "r"(srsave[12]));
__asm __volatile("mtsr 13,%0" :: "r"(srsave[13]));
__asm __volatile("mtsr 14,%0" :: "r"(srsave[14]));
__asm __volatile("mtsr 15,%0" :: "r"(srsave[15]));
__asm __volatile("sync");
}
return (result);
}
void
ppc_exit()
{
OF_exit();
}
void
ppc_boot(str)
char *str;
{
OF_boot(str);
}
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