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/*
* (C) Copyright 2002
* Rich Ireland, Enterasys Networks, rireland@enterasys.com.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
*/
#include <common.h>
#include <asm/processor.h>
#include <asm/mmu.h>
int write_bat (ppc_bat_t bat, unsigned long upper, unsigned long lower)
{
switch (bat) {
case IBAT0:
mtspr (IBAT0L, lower);
mtspr (IBAT0U, upper);
break;
case IBAT1:
mtspr (IBAT1L, lower);
mtspr (IBAT1U, upper);
break;
case IBAT2:
mtspr (IBAT2L, lower);
mtspr (IBAT2U, upper);
break;
case IBAT3:
mtspr (IBAT3L, lower);
mtspr (IBAT3U, upper);
break;
case DBAT0:
mtspr (DBAT0L, lower);
mtspr (DBAT0U, upper);
break;
case DBAT1:
mtspr (DBAT1L, lower);
mtspr (DBAT1U, upper);
break;
case DBAT2:
mtspr (DBAT2L, lower);
mtspr (DBAT2U, upper);
break;
case DBAT3:
mtspr (DBAT3L, lower);
mtspr (DBAT3U, upper);
break;
default:
return (-1);
}
return (0);
}
int read_bat (ppc_bat_t bat, unsigned long *upper, unsigned long *lower)
{
unsigned long register u;
unsigned long register l;
switch (bat) {
case IBAT0:
l = mfspr (IBAT0L);
u = mfspr (IBAT0U);
break;
case IBAT1:
l = mfspr (IBAT1L);
u = mfspr (IBAT1U);
break;
case IBAT2:
l = mfspr (IBAT2L);
u = mfspr (IBAT2U);
break;
case IBAT3:
l = mfspr (IBAT3L);
u = mfspr (IBAT3U);
break;
case DBAT0:
l = mfspr (DBAT0L);
u = mfspr (DBAT0U);
break;
case DBAT1:
l = mfspr (DBAT1L);
u = mfspr (DBAT1U);
break;
case DBAT2:
l = mfspr (DBAT2L);
u = mfspr (DBAT2U);
break;
case DBAT3:
l = mfspr (DBAT3L);
u = mfspr (DBAT3U);
break;
default:
return (-1);
}
*upper = u;
*lower = l;
return (0);
}
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