1 /*
2 * eve_mmu.c
3 *
4 * This file contains the test / demo code to demonstrate the EDMA3 driver
5 * functionality on DSP/BIOS 6.
6 *
7 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
8 *
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 *
17 * Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the
20 * distribution.
21 *
22 * Neither the name of Texas Instruments Incorporated nor the names of
23 * its contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 *
38 */
40 /******************************************************************************
41 * Macro Declarations *
42 ******************************************************************************/
43 #define WR_MEM_32(addr, data) *(unsigned int*)(addr) =(unsigned int)(data)
44 #define RD_MEM_32(addr) *(unsigned int*)(addr)
46 #define MMU_BASE 0x40081000 /* EVE's view */
47 /* #define MMU_BASE 0x42081000 */ /* MPU's view */
48 #define TESLASS_MMU__MMU_CNTL ( MMU_BASE + 0x44 )
49 #define TESLASS_MMU__MMU_CAM ( MMU_BASE + 0x58 )
50 #define TESLASS_MMU__MMU_RAM ( MMU_BASE + 0x5c )
51 #define TESLASS_MMU__MMU_LOCK ( MMU_BASE + 0x50 )
52 #define TESLASS_MMU__MMU_LD_TLB ( MMU_BASE + 0x54 )
54 #define PHY_ADDR1 0x4A000000
55 #define VIRT_ADDR1 0x4A000000
57 /*
58 * eve1MmuConfig() This function does EVE MMU settings. This function is
59 * called from Reset Module which is defined in configuration file.
60 */
61 void eveMmuConfig(void)
62 {
63 /* ------------------------------------------------------------------------------------------------------- */
64 WR_MEM_32(TESLASS_MMU__MMU_CAM, 0x0000000c | (VIRT_ADDR1 & 0xFFFFE000));
65 WR_MEM_32(TESLASS_MMU__MMU_RAM, 0x000001c0 | (PHY_ADDR1 & 0xFFFFE000));
67 /* tlbEntry is bits 8:4
68 #define TESLASS_MMU__MMU_LOCK__CURRENTVICTIM BITFIELD(8, 4) */
69 WR_MEM_32(TESLASS_MMU__MMU_LOCK, ((RD_MEM_32(TESLASS_MMU__MMU_LOCK)) & 0xFFFFFE0F) | ( 11 << 4 ));
70 WR_MEM_32(TESLASS_MMU__MMU_LD_TLB, 1 );
71 /* ------------------------------------------------------------------------------------------------------- */
73 /*Enable MMU*/
74 WR_MEM_32(TESLASS_MMU__MMU_CNTL, ((RD_MEM_32(TESLASS_MMU__MMU_CNTL)) & 0xFFFFFFFD) | 0x2);
75 }