/*
* Copyright (C) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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 THE AUTHOR 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.
*/
#include <arch/mm/page.h>
#include <genarch/mm/page_ht.h>
#include <mm/page.h>
#include <config.h>
#include <panic.h>
static void set_VHPT_environment(void)
{
/*
TODO:
*/
int i;
/* First set up REGION REGISTER 0 */
region_register rr;
rr.map.ve=0; /*Disable Walker*/
rr.map.ps=PAGE_WIDTH;
rr.map.rid=REGION_RID_MAIN;
asm
(
"mov rr[r0]=%0;;"
:
:"r"(rr.word)
);
/* And Invalidate the rest of REGION REGISTERS */
for(i=1;i<REGION_REGISTERS;i++)
{
rr.map.rid=REGION_RID_FIRST_INVALID+i-1;
asm
(
"mov r8=%1;;"
"mov rr[r8]=%0;;"
:
:"r"(rr.word),"r"(i)
:"r8"
);
};
PTA_register pta;
pta.map.ve=0; /*Disable Walker*/
pta.map.vf=1; /*Large entry format*/
pta.map.size=VHPT_WIDTH;
pta.map.base=VHPT_BASE;
/*Write PTA*/
asm
(
"mov cr8=%0;;"
:
:"r"(pta.word)
);
}
void page_arch_init(void)
{
page_operations = &page_ht_operations;
set_VHPT_environment();
}