4.115
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup rapberrypi_mmu |
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5 | * |
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6 | * @brief MMU API. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2013 Alan Cudmore. |
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11 | * based on work by: |
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12 | * Copyright (c) 2009 |
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13 | * embedded brains GmbH |
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14 | * Obere Lagerstr. 30 |
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15 | * D-82178 Puchheim |
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16 | * Germany |
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17 | * <rtems@embedded-brains.de> |
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18 | * |
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19 | * The license and distribution terms for this file may be |
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20 | * found in the file LICENSE in this distribution or at |
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21 | * |
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22 | * http://www.rtems.com/license/LICENSE |
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23 | * |
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24 | */ |
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25 | |
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26 | #ifndef LIBBSP_ARM_RASPBERRYPI_MMU_H |
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27 | #define LIBBSP_ARM_RASPBERRYPI_MMU_H |
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28 | |
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29 | #include <libcpu/arm-cp15.h> |
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30 | |
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31 | #ifdef __cplusplus |
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32 | extern "C" { |
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33 | #endif /* __cplusplus */ |
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34 | |
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35 | /** |
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36 | * @defgroup raspberrypi_mmu MMU Support |
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37 | * |
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38 | * @ingroup raspberrypi |
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39 | * |
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40 | * @brief MMU support. |
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41 | * |
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42 | * @{ |
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43 | */ |
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44 | |
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45 | #define RASPBERRYPI_MMU_CLIENT_DOMAIN 15U |
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46 | |
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47 | #define RASPBERRYPI_MMU_READ_ONLY \ |
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48 | ((RASPBERRYPI_MMU_CLIENT_DOMAIN << ARM_MMU_SECT_DOMAIN_SHIFT) \ |
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49 | | ARM_MMU_SECT_DEFAULT) |
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50 | |
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51 | #define RASPBERRYPI_MMU_READ_ONLY_CACHED \ |
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52 | (RASPBERRYPI_MMU_READ_ONLY | ARM_MMU_SECT_C | ARM_MMU_SECT_B) |
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53 | |
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54 | #define RASPBERRYPI_MMU_READ_WRITE \ |
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55 | ((RASPBERRYPI_MMU_CLIENT_DOMAIN << ARM_MMU_SECT_DOMAIN_SHIFT) \ |
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56 | | ARM_MMU_SECT_AP_0 \ |
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57 | | ARM_MMU_SECT_DEFAULT) |
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58 | |
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59 | #define RASPBERRYPI_MMU_READ_WRITE_CACHED \ |
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60 | (RASPBERRYPI_MMU_READ_WRITE | ARM_MMU_SECT_C | ARM_MMU_SECT_B) |
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61 | |
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62 | /** @} */ |
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63 | |
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64 | #ifdef __cplusplus |
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65 | } |
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66 | #endif /* __cplusplus */ |
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67 | |
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68 | #endif /* LIBBSP_ARM_RASPBERRYPI_MMU_H */ |
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