4.104.115
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1 | /* |
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2 | * mmu.h |
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3 | * |
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4 | * This include file contains definitions pertaining |
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5 | * to the MMU on the MPC8xx. |
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6 | * |
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7 | * Copyright (c) 1999, National Research Council of Canada |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in the file LICENSE in this distribution or at |
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11 | * http://www.rtems.com/license/LICENSE. |
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12 | */ |
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13 | |
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14 | #ifndef _MPC8XX_MMU_H |
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15 | #define _MPC8XX_MMU_H |
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16 | |
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17 | #ifdef __cplusplus |
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18 | extern "C" { |
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19 | #endif |
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20 | |
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21 | /* |
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22 | * The MMU_TLB_table is used to statically initialize the Table Lookaside |
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23 | * Buffers in the MMU of an MPC8xx. |
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24 | */ |
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25 | typedef struct { |
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26 | uint32_t mmu_epn; /* Effective Page Number */ |
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27 | uint32_t mmu_twc; /* Tablewalk Control Register */ |
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28 | uint32_t mmu_rpn; /* Real Page Number */ |
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29 | } MMU_TLB_table_t; |
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30 | |
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31 | /* |
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32 | * The MMU_TLB_table and its size, MMU_N_TLB_Table_Entries, must be |
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33 | * supplied by the BSP. |
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34 | */ |
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35 | extern MMU_TLB_table_t MMU_TLB_table[]; /* MMU TLB table supplied by BSP */ |
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36 | extern int MMU_N_TLB_Table_Entries; /* Number of entries in MMU TLB table */ |
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37 | |
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38 | /* Functions */ |
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39 | |
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40 | void mmu_init( void ); |
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41 | |
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42 | #ifdef __cplusplus |
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43 | } |
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44 | #endif |
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45 | |
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46 | #endif |
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47 | /* end of include file */ |
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