1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* RTEMS TQM8xx BSP
*
* This file contains the console driver.
*/
/*
* Copyright (c) 1999, National Research Council of Canada
* Copyright (c) 2008 Thomas Doerfler, embedded brains GmbH.
* All rights reserved.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <bsp.h>
#include <mpc8xx/mmu.h>
/*
* This MMU_TLB_table is used to statically initialize the Table Lookaside
* Buffers in the MMU of the TQM8xx board.
*
* We initialize the entries in both the instruction and data TLBs
* with the same values - a few bits relevant to the data TLB are unused
* in the instruction TLB.
*
* An Effective Page Number (EPN), Tablewalk Control Register (TWC) and
* Real Page Number (RPN) value are supplied in the table for each TLB entry.
*
* The instruction and data TLBs each can hold 32 entries, so _TLB_Table must
* not have more than 32 lines in it!
*
* We set up the virtual memory map so that virtual address of a
* location is equal to its real address.
*/
MMU_TLB_table_t MMU_TLB_table[] = {
/*
* DRAM: Start address 0x00000000, 128M,
* ASID=0x0, APG=0x0, not guarded memory, copyback data cache policy,
* R/W,X for all, no ASID comparison, not cache-inhibited.
* EPN TWC RPN
*/
{ 0x00000200, 0x0D, 0x000009FD }, /* DRAM - PS=8M */
{ 0x00800200, 0x0D, 0x008009FD }, /* DRAM - PS=8M */
{ 0x01000200, 0x0D, 0x010009FD }, /* DRAM - PS=8M */
{ 0x01800200, 0x0D, 0x018009FD }, /* DRAM - PS=8M */
{ 0x02000200, 0x0D, 0x020009FD }, /* DRAM - PS=8M */
{ 0x02800200, 0x0D, 0x028009FD }, /* DRAM - PS=8M */
{ 0x03000200, 0x0D, 0x030009FD }, /* DRAM - PS=8M */
{ 0x03800200, 0x0D, 0x038009FD }, /* DRAM - PS=8M */
{ 0x04000200, 0x0D, 0x040009FD }, /* DRAM - PS=8M */
{ 0x04800200, 0x0D, 0x048009FD }, /* DRAM - PS=8M */
{ 0x05000200, 0x0D, 0x050009FD }, /* DRAM - PS=8M */
{ 0x05800200, 0x0D, 0x058009FD }, /* DRAM - PS=8M */
{ 0x06000200, 0x0D, 0x060009FD }, /* DRAM - PS=8M */
{ 0x06800200, 0x0D, 0x068009FD }, /* DRAM - PS=8M */
{ 0x07000200, 0x0D, 0x070009FD }, /* DRAM - PS=8M */
{ 0x07800200, 0x0D, 0x078009FD }, /* DRAM - PS=8M */
/*
*
* (IMMR-SPRs) Dual Port RAM: Start address 0xFA200000, 16K,
* ASID=0x0, APG=0x0, guarded memory, write-through data cache policy,
* R/W,X for all, no ASID comparison, cache-inhibited.
*
* Note: We use the value in MBXA/PG2, which is also the value that
* EPPC-Bug programmed into our boards. The alternative is the value
* in MBXA/PG1: 0xFFA00000. This value might well depend on the revision
* of the firmware.
* EPN TWC RPN
*/
{ 0xFA200200, 0x13, 0xFA2009FF }, /* IMMR - PS=16K */
/*
*
* Flash: Start address 0x40000000, 8M,
* ASID=0x0, APG=0x0, not guarded memory,
* R/O,X for all, no ASID comparison, not cache-inhibited.
* EPN TWC RPN
*/
{ 0x40000200, 0x0D, 0x40000CFD } /* Flash - PS=8M */
};
/*
* MMU_N_TLB_Table_Entries is defined here because the size of the
* MMU_TLB_table is only known in this file.
*/
int MMU_N_TLB_Table_Entries = ( sizeof(MMU_TLB_table) / sizeof(MMU_TLB_table[0]) );
|
