1 /*
2 * Copyright (c) 2019, Texas Instruments Incorporated
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of Texas Instruments Incorporated nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32 /*
33 * ======== event_MPU.xs ========
34 * MPU Settings for am64x device's Cortex-R5F
35 */
37 /*
38 * -------------------------------------------------------------------------------------------------------------
39 * | Id | Base Address | Size | En | Cacheable | XN | AccPerm | Mask |
40 * |----|--------------|------|----|-------------------------------------------|----|---------------------|------|
41 * | 0 | 0x00000000 | 4GB | T | uncacheable, Shareable | F | RW at PL 1 & PL 2 | 0x0 |
42 * |----|--------------|------|----|-------------------------------------------|----|---------------------|------|
43 * | 1 | 0 (local TCM)| 32K | T | Write-Back, Write-Allocate, Non-Shareable | F | RW at PL 1 | 0x0 |
44 * |----|--------------|------|----|-------------------------------------------|----|---------------------|------|
45 * | 2 | 0x41000000 | 32K | T | Write-Back, Write-Allocate, Non-Shareable | F | RW at PL 1 | 0x0 |
46 * |----|--------------|------|----|-------------------------------------------|----|---------------------|------|
47 * | 3 | 0x41010000 | 32K | T | Write-Back, Write-Allocate, Non-Shareable | F | RW at PL 1 | 0x0 |
48 * |----|--------------|------|----|-------------------------------------------|----|---------------------|------|
49 * | 4 | 0x41C00000 | 1MB | T | Write-Back, Write-Allocate, Non-Shareable | F | RW at PL 1 | 0x0 |
50 * -------------------------------------------------------------------------------------------------------------
51 * | 5 | 0x70000000 | 8MB | T | MSMC Ram - Cachable | F | RW at PL 1 | 0x0 |
52 * -------------------------------------------------------------------------------------------------------------
53 * | 6 | 0x80000000 | 2GB | T | DDR - Strongly Ordered, Shareable | F | RW at PL 1 & PL 3 | 0x0 |
54 * -------------------------------------------------------------------------------------------------------------
55 * | 7 | 0xAA000000 | 32MB | T | DDR (VRing Buffer) - Uncacheble | F | RW at PL 1 & PL 3 | 0x0 |
56 * |-------------------------------------------------------------------------------------------------------------|
57 */
59 /*
60 * Note: Marking a region as shareable will cause the region to behave as outer shareable with write through
61 * no write-allocate caching policy irrespective of the actual cache policy set. Therefore, only select
62 * regions that are actually shared outside the R5 CPUSS must be marked as shared.
63 */
65 var MPU = xdc.useModule('ti.sysbios.family.arm.MPU');
66 MPU.enableMPU = true;
67 MPU.enableBackgroundRegion = true;
69 var attrs = new MPU.RegionAttrs();
70 MPU.initRegionAttrsMeta(attrs);
72 /* This entry covers the whole 32 bit memory range
73 Address: 0x00000000-0xffffffff */
74 attrs.enable = true;
75 attrs.bufferable = false;
76 attrs.cacheable = false;
77 attrs.shareable = true;
78 attrs.noExecute = true;
79 attrs.accPerm = 1; /* RW at PL1 */
80 attrs.tex = 0;
81 attrs.subregionDisableMask = 0;
82 MPU.setRegionMeta(0, 0x00000000, MPU.RegionSize_4G, attrs);
84 /* This entry covers the ATCM mapped to 0 */
85 attrs.enable = true;
86 attrs.bufferable = true;
87 attrs.cacheable = true;
88 attrs.shareable = true;
89 attrs.noExecute = false;
90 attrs.accPerm = 1; /* RW at PL1 */
91 attrs.tex = 1;
92 attrs.subregionDisableMask = 0;
93 MPU.setRegionMeta(1, 0x00000000, MPU.RegionSize_32K, attrs);
95 /* This entry covers ATCM if mapped to 0x41000000 */
96 attrs.enable = true;
97 attrs.bufferable = true;
98 attrs.cacheable = true;
99 attrs.shareable = false;
100 attrs.noExecute = false;
101 attrs.accPerm = 1; /* RW at PL1 */
102 attrs.tex = 1;
103 attrs.subregionDisableMask = 0;
104 MPU.setRegionMeta(2, 0x41000000, MPU.RegionSize_32K, attrs);
106 /* This entry covers BTCM if mapped to 0x41010000 */
107 attrs.enable = true;
108 attrs.bufferable = true;
109 attrs.cacheable = true;
110 attrs.shareable = false;
111 attrs.noExecute = false;
112 attrs.accPerm = 1; /* RW at PL1 */
113 attrs.tex = 1;
114 attrs.subregionDisableMask = 0x0;
115 MPU.setRegionMeta(3, 0x41010000, MPU.RegionSize_32K, attrs);
117 /* This entry covers RAM0 */
118 attrs.enable = true;
119 attrs.bufferable = true;
120 attrs.cacheable = true;
121 attrs.shareable = false;
122 attrs.noExecute = false;
123 attrs.accPerm = 1; /* RW at PL1 */
124 attrs.tex = 1;
125 attrs.subregionDisableMask = 0;
126 MPU.setRegionMeta(4, 0x41C00000, MPU.RegionSize_1M, attrs);
128 /* This entry covers MSMC SRAM */
129 attrs.enable = true;
130 attrs.bufferable = true;
131 attrs.cacheable = true;
132 attrs.shareable = false;
133 attrs.noExecute = false;
134 attrs.accPerm = 1; /* RW at PL1 */
135 attrs.tex = 1;
136 attrs.subregionDisableMask = 0;
137 MPU.setRegionMeta(5, 0x70000000, MPU.RegionSize_8M, attrs);
139 /* This entry covers DDR memory */
140 attrs.enable = true;
141 attrs.bufferable = true;
142 attrs.cacheable = true;
143 attrs.shareable = false;
144 attrs.noExecute = false;
145 attrs.accPerm = 0x3; /* RW at PL1 & PL2 */
146 attrs.tex = 1;
147 attrs.subregionDisableMask = 0;
148 MPU.setRegionMeta(6, 0x80000000, MPU.RegionSize_2G, attrs);
150 /* Ring Buffer uncached.... */
151 attrs.enable = true;
152 attrs.bufferable = false;
153 attrs.cacheable = false;
154 attrs.shareable = true;
155 attrs.noExecute = true;
156 attrs.accPerm = 3; /* RW at PL1 */
157 attrs.tex = 0;
158 attrs.subregionDisableMask = 0;
159 MPU.setRegionMeta(7, 0xAA000000, MPU.RegionSize_32M, attrs);