source: rtems/c/src/lib/libcpu/powerpc/mpc8xx/include/mmu.h @ 8ef3818

4.104.114.84.95
Last change on this file since 8ef3818 was 8ef3818, checked in by Joel Sherrill <joel.sherrill@…>, on Jun 12, 2000 at 7:57:02 PM

Patch from John Cotton <john.cotton@…>, Charles-Antoine Gauthier
<charles.gauthier@…>, and Darlene A. Stewart
<Darlene.Stewart@…> to add support for a number of very
significant things:

+ BSPs for many variations on the Motorola MBX8xx board series
+ Cache Manager including initial support for m68040

and PowerPC

+ Rework of mpc8xx libcpu code so all mpc8xx CPUs now use

same code base.

+ Rework of eth_comm BSP to utiltize above.

John reports this works on the 821 and 860

  • Property mode set to 100644
File size: 1.1 KB
Line 
1/*
2 * mmu.h
3 *
4 * This include file contains definitions pertaining
5 * to the MMU on the MPC8xx.
6 *
7 * Copyright (c) 1999, National Research Council of Canada
8 *
9 * The license and distribution terms for this file may be
10 * found in the file LICENSE in this distribution or at
11 * http://www.OARcorp.com/rtems/license.html.
12 */
13
14#ifndef __M8xx_MMU_h
15#define __M8xx_MMU_h
16
17#ifdef __cplusplus
18extern "C" {
19#endif
20
21#include <bsp.h>
22
23/*
24 * The MMU_TLB_table is used to statically initialize the Table Lookaside
25 * Buffers in the MMU of an MPC8xx.
26 */
27typedef struct {
28  unsigned32    mmu_epn;        /* Effective Page Number */
29  unsigned32    mmu_twc;        /* Tablewalk Control Register */
30  unsigned32    mmu_rpn;        /* Real Page Number */
31} MMU_TLB_table_t;
32
33/*
34 * The MMU_TLB_table and its size, MMU_N_TLB_Table_Entries, must be
35 * supplied by the BSP.
36 */
37extern MMU_TLB_table_t MMU_TLB_table[]; /* MMU TLB table supplied by BSP */
38extern int MMU_N_TLB_Table_Entries;     /* Number of entries in MMU TLB table */
39
40/* Functions */
41
42void mmu_init( void );
43
44#ifdef __cplusplus
45}
46#endif
47
48#endif
49/* end of include file */
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