1 | #ifndef SRL_HW_HELPERS_H |
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2 | #define SRL_HW_HELPERS_H |
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3 | |
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4 | /** |
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5 | * @file |
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6 | * @module{SRL} |
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7 | * @short Miscellaneous APIs |
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8 | */ |
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9 | |
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10 | #include "stdio.h" |
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11 | |
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12 | |
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13 | /** |
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14 | Standard API call, expands to nothing for this implementation. |
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15 | */ |
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16 | #define srl_busy_cycles(n) do{}while(0) |
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17 | |
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18 | //void useless(void *pointless,...){} |
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19 | /** |
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20 | @this flushes the cache line containing the address. |
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21 | */ |
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22 | //TODO |
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23 | #define srl_dcache_flush_addr 0 |
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24 | |
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25 | /* |
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26 | static inline cpu_dcache_invld(void *ptr){ |
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27 | asm volatile ( |
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28 | " cache %0, %1" |
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29 | : : "i" (0x11) , "R" (*(uint8_t*)(ptr)) |
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30 | : "memory" |
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31 | ); |
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32 | } |
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33 | */ |
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34 | |
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35 | /** |
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36 | @this flushes a memory zone from cache. |
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37 | */ |
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38 | //TODO |
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39 | //void dcache_flush(const void * addr, size_t size) |
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40 | #define srl_dcache_flush_zone dcache_flush |
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41 | |
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42 | /** |
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43 | @this waits for at least the given time (in cycles). The actual |
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44 | time spent in this call is not predictable. |
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45 | |
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46 | @param time Number of cycles to wait for |
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47 | */ |
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48 | void srl_sleep_cycles( unsigned int time ); |
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49 | |
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50 | /** |
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51 | @this returns the absolute timestamp counter from the |
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52 | initialization of the platform. |
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53 | |
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54 | @return Cycles from the initialization of the system |
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55 | */ |
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56 | static inline unsigned int srl_cycle_count() |
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57 | { |
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58 | return giet_proctime(); |
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59 | } |
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60 | |
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61 | /** |
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62 | @this aborts the current execution. On most systems, @this will |
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63 | simply hang. |
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64 | */ |
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65 | static inline void srl_abort() |
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66 | { |
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67 | asm volatile ("break 0"); |
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68 | while(1); |
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69 | } |
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70 | |
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71 | /** |
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72 | * |
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73 | */ |
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74 | static inline void srl_exit() |
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75 | { |
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76 | giet_exit(); |
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77 | } |
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78 | |
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79 | #endif |
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