134 lines
2.4 KiB
C
134 lines
2.4 KiB
C
/*
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* (C) Copyright 2002
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* Rich Ireland, Enterasys Networks, rireland@enterasys.com.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <asm/processor.h>
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#include <asm/mmu.h>
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int write_bat (ppc_bat_t bat, unsigned long upper, unsigned long lower)
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{
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switch (bat) {
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case IBAT0:
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mtspr (IBAT0L, lower);
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mtspr (IBAT0U, upper);
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break;
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case IBAT1:
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mtspr (IBAT1L, lower);
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mtspr (IBAT1U, upper);
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break;
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case IBAT2:
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mtspr (IBAT2L, lower);
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mtspr (IBAT2U, upper);
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break;
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case IBAT3:
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mtspr (IBAT3L, lower);
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mtspr (IBAT3U, upper);
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break;
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case DBAT0:
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mtspr (DBAT0L, lower);
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mtspr (DBAT0U, upper);
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break;
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case DBAT1:
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mtspr (DBAT1L, lower);
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mtspr (DBAT1U, upper);
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break;
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case DBAT2:
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mtspr (DBAT2L, lower);
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mtspr (DBAT2U, upper);
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break;
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case DBAT3:
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mtspr (DBAT3L, lower);
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mtspr (DBAT3U, upper);
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break;
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default:
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return (-1);
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}
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return (0);
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}
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int read_bat (ppc_bat_t bat, unsigned long *upper, unsigned long *lower)
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{
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unsigned long register u;
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unsigned long register l;
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switch (bat) {
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case IBAT0:
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l = mfspr (IBAT0L);
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u = mfspr (IBAT0U);
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break;
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case IBAT1:
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l = mfspr (IBAT1L);
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u = mfspr (IBAT1U);
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break;
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case IBAT2:
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l = mfspr (IBAT2L);
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u = mfspr (IBAT2U);
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break;
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case IBAT3:
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l = mfspr (IBAT3L);
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u = mfspr (IBAT3U);
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break;
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case DBAT0:
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l = mfspr (DBAT0L);
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u = mfspr (DBAT0U);
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break;
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case DBAT1:
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l = mfspr (DBAT1L);
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u = mfspr (DBAT1U);
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break;
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case DBAT2:
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l = mfspr (DBAT2L);
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u = mfspr (DBAT2U);
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break;
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case DBAT3:
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l = mfspr (DBAT3L);
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u = mfspr (DBAT3U);
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break;
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default:
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return (-1);
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}
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*upper = u;
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*lower = l;
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return (0);
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}
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