67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
|
/*-
|
||
|
|
* Copyright (C) 2015 Nathan Whitehorn
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
|
||
|
|
*
|
||
|
|
* $FreeBSD$
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <dev/ofw/openfirm.h>
|
||
|
|
|
||
|
|
#include "opal.h"
|
||
|
|
|
||
|
|
extern uint64_t opal_entrypoint;
|
||
|
|
extern uint64_t opal_data;
|
||
|
|
extern uint64_t opal_msr;
|
||
|
|
|
||
|
|
static int opal_initialized = 0;
|
||
|
|
|
||
|
|
int
|
||
|
|
opal_check(void)
|
||
|
|
{
|
||
|
|
phandle_t opal;
|
||
|
|
cell_t val[2];
|
||
|
|
|
||
|
|
if (opal_initialized)
|
||
|
|
return (0);
|
||
|
|
|
||
|
|
opal = OF_finddevice("/ibm,opal");
|
||
|
|
if (opal == -1)
|
||
|
|
return (ENOENT);
|
||
|
|
|
||
|
|
if (!OF_hasprop(opal, "opal-base-address") ||
|
||
|
|
!OF_hasprop(opal, "opal-entry-address"))
|
||
|
|
return (ENOENT);
|
||
|
|
|
||
|
|
OF_getencprop(opal, "opal-base-address", val, sizeof(val));
|
||
|
|
opal_data = ((uint64_t)val[0] << 32) | val[1];
|
||
|
|
OF_getencprop(opal, "opal-entry-address", val, sizeof(val));
|
||
|
|
opal_entrypoint = ((uint64_t)val[0] << 32) | val[1];
|
||
|
|
|
||
|
|
opal_msr = mfmsr() & ~(PSL_EE | PSL_IR | PSL_DR | PSL_SE);
|
||
|
|
|
||
|
|
opal_initialized = 1;
|
||
|
|
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|