1 /******************************************************************************
3 * Copyright (C) 2014 - 2017 Xilinx, Inc. All rights reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * Use of the Software is limited solely to applications:
16 * (a) running on a Xilinx device, or
17 * (b) that interact with a Xilinx device through a bus or interconnect.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
23 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
24 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
27 * Except as contained in this notice, the name of the Xilinx shall not be used
28 * in advertising or otherwise to promote the sale, use or other dealings in
29 * this Software without prior written authorization from Xilinx.
31 ******************************************************************************/
32 /*****************************************************************************/
36 * This file provides APIs for enabling/disabling MMU and setting the memory
37 * attributes for sections, in the MMU translation table.
38 * MMU APIs are yet to be implemented. They are left blank to avoid any
42 * MODIFICATION HISTORY:
44 * Ver Who Date Changes
45 * ----- ---- -------- ---------------------------------------------------
46 * 5.00 pkp 05/29/14 First release
47 * 6.02 pkp 01/22/17 Added support for EL1 non-secure
54 ******************************************************************************/
56 /***************************** Include Files *********************************/
58 #include "xil_cache.h"
59 #include "xpseudo_asm.h"
60 #include "xil_types.h"
62 #include "bspconfig.h"
63 /***************** Macros (Inline Functions) Definitions *********************/
65 /**************************** Type Definitions *******************************/
67 /************************** Constant Definitions *****************************/
69 #define BLOCK_SIZE_2MB 0x200000U
70 #define BLOCK_SIZE_1GB 0x40000000U
71 #define ADDRESS_LIMIT_4GB 0x100000000UL
73 /************************** Variable Definitions *****************************/
75 extern INTPTR MMUTableL1;
76 extern INTPTR MMUTableL2;
78 /************************** Function Prototypes ******************************/
79 /*****************************************************************************/
81 * brief It sets the memory attributes for a section, in the translation
82 * table. If the address (defined by Addr) is less than 4GB, the
83 * memory attribute(attrib) is set for a section of 2MB memory. If the
84 * address (defined by Addr) is greater than 4GB, the memory attribute
85 * (attrib) is set for a section of 1GB memory.
87 * @param Addr: 64-bit address for which attributes are to be set.
88 * @param attrib: Attribute for the specified memory region. xil_mmu.h
89 * contains commonly used memory attributes definitions which can be
90 * utilized for this function.
94 * @note The MMU and D-cache need not be disabled before changing an
95 * translation table attribute.
97 ******************************************************************************/
98 void Xil_SetTlbAttributes(UINTPTR Addr, u64 attrib)
103 /* if region is less than 4GB MMUTable level 2 need to be modified */
104 if(Addr < ADDRESS_LIMIT_4GB){
105 /* block size is 2MB for addressed < 4GB*/
106 block_size = BLOCK_SIZE_2MB;
107 section = Addr / block_size;
108 ptr = &MMUTableL2 + section;
110 /* if region is greater than 4GB MMUTable level 1 need to be modified */
112 /* block size is 1GB for addressed > 4GB */
113 block_size = BLOCK_SIZE_1GB;
114 section = Addr / block_size;
115 ptr = &MMUTableL1 + section;
117 *ptr = (Addr & (~(block_size-1))) | attrib;
123 else if (EL1_NONSECURE == 1)
126 dsb(); /* ensure completion of the BP and TLB invalidation */
127 isb(); /* synchronize context on this processor */