OpenWrt – Blame information for rev 1
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1 | office | 1 | #ifndef bcmutils_H |
2 | #define bcmutils_H |
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3 | |||
4 | typedef struct |
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5 | { |
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6 | uint16_t magic; |
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7 | uint16_t control; |
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8 | uint16_t rev_maj; |
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9 | uint16_t rev_min; |
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10 | uint32_t build_date; |
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11 | uint32_t filelen; |
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12 | uint32_t ldaddress; |
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13 | char filename[64]; |
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14 | uint16_t hcs; |
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15 | uint16_t her_znaet_chto; //v dushe ne ebu |
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16 | uint32_t crc; |
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17 | } ldr_header_t; |
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18 | |||
19 | |||
20 | /** |
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21 | * Reverses endianess of a 32bit int, if the ENDIAN_REVERSE_NEEDED defined at compile-time |
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22 | * @param data |
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23 | * @return |
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24 | */ |
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25 | uint32_t reverse_endian32 ( uint32_t data ); |
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26 | |||
27 | /** |
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28 | * Reverses endianess of a 16bit int, if the ENDIAN_REVERSE_NEEDED defined at compile-time |
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29 | * @param data |
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30 | * @return |
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31 | */ |
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32 | uint16_t reverse_endian16 ( uint16_t data ); |
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33 | /** |
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34 | * Calculates the strange crc (used by bcm modems) of the file. Thnx fly out to Vector for the algorithm. |
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35 | * @param filename |
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36 | * @return |
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37 | */ |
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38 | uint32_t get_file_crc ( char* filename ); |
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39 | |||
40 | /** |
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41 | * Calculates HCS of the header. |
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42 | * @param hd |
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43 | * @return |
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44 | */ |
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45 | uint16_t get_hcs ( ldr_header_t* hd ); |
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46 | |||
47 | /** |
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48 | * Constructs the header of the image with the information given It also automagically calculates HCS and writes it there. |
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49 | * @param magic - magic device bytes |
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50 | * @param rev_maj - major revision |
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51 | * @param rev_min - minor revision |
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52 | * @param build_date - build date (seconds from EPOCH UTC) |
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53 | * @param filelen - file length in bytes |
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54 | * @param ldaddress - Load adress |
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55 | * @param filename - filename |
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56 | * @param crc_data - the crc of the data |
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57 | * @return |
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58 | */ |
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59 | ldr_header_t* construct_header ( uint32_t magic, uint16_t rev_maj,uint16_t rev_min, uint32_t build_date, uint32_t filelen, uint32_t ldaddress, const char* filename, uint32_t crc_data ); |
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60 | |||
61 | /** |
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62 | * Dumps header information to stdout. |
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63 | * @param hd |
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64 | */ |
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65 | int dump_header ( ldr_header_t* hd ); |
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66 | |||
67 | |||
68 | /** |
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69 | * Returns a null terminated string describing what the control number meens |
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70 | * DO NOT FREE IT!!! |
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71 | * @param control |
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72 | * @return |
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73 | */ |
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74 | char* get_control_info ( uint16_t control ); |
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75 | #endif |
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76 | |||
77 | /** |
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78 | * Calculates bcmCRC of a data buffer. |
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79 | * @param filebuffer - pointer to buffer |
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80 | * @param size - buffer size |
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81 | * @return |
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82 | */ |
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83 | uint32_t get_buffer_crc ( char* filebuffer, size_t size ); |