1 /* ----------------------------------------------------------------------------
\r
2 * SAM Software Package License
\r
3 * ----------------------------------------------------------------------------
\r
4 * Copyright (c) 2015, Atmel Corporation
\r
6 * All rights reserved.
\r
8 * Redistribution and use in source and binary forms, with or without
\r
9 * modification, are permitted provided that the following conditions are met:
\r
11 * - Redistributions of source code must retain the above copyright notice,
\r
12 * this list of conditions and the disclaimer below.
\r
14 * Atmel's name may not be used to endorse or promote products derived from
\r
15 * this software without specific prior written permission.
\r
17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
\r
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
\r
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
\r
20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
\r
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
\r
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
\r
23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
\r
24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
\r
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
\r
26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\r
27 * ----------------------------------------------------------------------------
\r
33 /*----------------------------------------------------------------------------
\r
34 * Exported definitions
\r
35 *----------------------------------------------------------------------------*/
\r
37 #define TTB_TYPE(x) ((x) << 0)
\r
38 #define TTB_TYPE_SECT TTB_TYPE(2)
\r
40 #define TTB_SECT_B(x) ((x) << 2)
\r
41 #define TTB_SECT_WRITE_THROUGH TTB_SECT_B(0)
\r
42 #define TTB_SECT_WRITE_BACK TTB_SECT_B(1)
\r
44 #define TTB_SECT_C(x) ((x) << 3)
\r
45 #define TTB_SECT_NON_CACHEABLE TTB_SECT_C(0)
\r
46 #define TTB_SECT_CACHEABLE TTB_SECT_C(1)
\r
48 #define TTB_SECT_XN(x) ((x) << 4)
\r
49 #define TTB_SECT_EXEC TTB_SECT_XN(0)
\r
50 #define TTB_SECT_EXEC_NEVER TTB_SECT_XN(1)
\r
52 #define TTB_SECT_DOMAIN(x) ((x) << 5)
\r
54 #define TTB_SECT_AP(x) ((x) << 10)
\r
55 #define TTB_SECT_APX(x) ((x) << 15)
\r
56 #define TTB_SECT_AP_PRIV_ONLY (TTB_SECT_APX(0) | TTB_SECT_AP(1))
\r
57 #define TTB_SECT_AP_NO_USER_WRITE (TTB_SECT_APX(0) | TTB_SECT_AP(2))
\r
58 #define TTB_SECT_AP_FULL_ACCESS (TTB_SECT_APX(0) | TTB_SECT_AP(3))
\r
59 #define TTB_SECT_AP_PRIV_READ_ONLY (TTB_SECT_APX(1) | TTB_SECT_AP(1))
\r
60 #define TTB_SECT_AP_READ_ONLY (TTB_SECT_APX(1) | TTB_SECT_AP(2))
\r
62 #define TTB_SECT_TEX(x) ((x) << 12)
\r
63 #define TTB_SECT_STRONGLY_ORDERED (TTB_SECT_TEX(0) | TTB_SECT_NON_CACHEABLE | TTB_SECT_WRITE_THROUGH)
\r
64 #define TTB_SECT_SHAREABLE_DEVICE (TTB_SECT_TEX(0) | TTB_SECT_NON_CACHEABLE | TTB_SECT_WRITE_BACK)
\r
65 #define TTB_SECT_CACHEABLE_WT (TTB_SECT_TEX(0) | TTB_SECT_CACHEABLE | TTB_SECT_WRITE_THROUGH)
\r
66 #define TTB_SECT_CACHEABLE_WB (TTB_SECT_TEX(0) | TTB_SECT_CACHEABLE | TTB_SECT_WRITE_BACK)
\r
68 #define TTB_SECT_ADDR(x) ((x) & 0xFFF00000)
\r
70 /*----------------------------------------------------------------------------
\r
71 * Exported functions
\r
72 *----------------------------------------------------------------------------*/
\r
75 * \brief initializes the MMU
\r
77 extern void mmu_initialize(void);
\r
79 #endif /* #ifndef _MMU_ */
\r