1 | /* |
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2 | * Copyright (c) 2013 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Dornierstr. 4 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <info@embedded-brains.de> |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.rtems.org/license/LICENSE. |
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13 | */ |
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14 | |
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15 | #define ARM_CP15_TEXT_SECTION BSP_START_TEXT_SECTION |
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16 | |
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17 | #include <bsp.h> |
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18 | #include <bsp/start.h> |
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19 | #include <bsp/arm-cp15-start.h> |
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20 | #include <bsp/arm-a9mpcore-start.h> |
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21 | |
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22 | BSP_START_DATA_SECTION static const arm_cp15_start_section_config |
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23 | rvpbxa9_mmu_config_table[] = { |
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24 | ARMV7_CP15_START_DEFAULT_SECTIONS, |
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25 | { |
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26 | .begin = 0x10000000U, |
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27 | .end = 0x10020000U, |
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28 | .flags = ARMV7_MMU_DEVICE |
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29 | }, { |
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30 | .begin = 0x1f000000U, |
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31 | .end = 0x20000000U, |
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32 | .flags = ARMV7_MMU_DEVICE |
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33 | }, { |
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34 | .begin = 0x4e000000U, |
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35 | .end = 0x4f000000U, |
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36 | .flags = ARMV7_MMU_DEVICE |
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37 | } |
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38 | }; |
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39 | |
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40 | BSP_START_TEXT_SECTION static void setup_mmu_and_cache(void) |
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41 | { |
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42 | uint32_t ctrl = arm_cp15_start_setup_mmu_and_cache( |
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43 | ARM_CP15_CTRL_A, |
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44 | ARM_CP15_CTRL_AFE | ARM_CP15_CTRL_Z |
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45 | ); |
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46 | |
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47 | arm_cp15_start_setup_translation_table_and_enable_mmu_and_cache( |
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48 | ctrl, |
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49 | (uint32_t *) bsp_translation_table_base, |
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50 | ARM_MMU_DEFAULT_CLIENT_DOMAIN, |
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51 | &rvpbxa9_mmu_config_table[0], |
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52 | RTEMS_ARRAY_SIZE(rvpbxa9_mmu_config_table) |
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53 | ); |
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54 | } |
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55 | |
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56 | BSP_START_TEXT_SECTION void bsp_start_hook_0(void) |
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57 | { |
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58 | #ifdef RTEMS_SMP |
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59 | uint32_t cpu_id = arm_cortex_a9_get_multiprocessor_cpu_id(); |
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60 | |
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61 | /* |
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62 | * QEMU jumps to the entry point of the ELF file on all processors. Prevent |
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63 | * a SMP_FATAL_MULTITASKING_START_ON_INVALID_PROCESSOR this way. |
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64 | */ |
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65 | if ( cpu_id >= rtems_configuration_get_maximum_processors() ) { |
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66 | while (true) { |
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67 | _ARM_Wait_for_event(); |
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68 | } |
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69 | } |
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70 | #endif |
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71 | |
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72 | arm_a9mpcore_start_hook_0(); |
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73 | } |
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74 | |
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75 | BSP_START_TEXT_SECTION void bsp_start_hook_1(void) |
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76 | { |
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77 | arm_a9mpcore_start_hook_1(); |
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78 | bsp_start_copy_sections(); |
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79 | setup_mmu_and_cache(); |
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80 | bsp_start_clear_bss(); |
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81 | } |
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