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1999 | decky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2006 Martin Decky |
1999 | decky | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup genericmm |
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30 | * @{ |
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31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
35 | #ifndef KERN_RD_H_ |
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36 | #define KERN_RD_H_ |
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37 | |||
2002 | decky | 38 | #include <arch/types.h> |
1999 | decky | 39 | |
2002 | decky | 40 | /** |
41 | * RAM disk version |
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42 | */ |
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2445 | decky | 43 | #define RD_VERSION 1 |
1999 | decky | 44 | |
2002 | decky | 45 | /** |
46 | * RAM disk magic number |
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47 | */ |
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48 | #define RD_MAGIC_SIZE 4 |
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49 | #define RD_MAG0 'H' |
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50 | #define RD_MAG1 'O' |
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51 | #define RD_MAG2 'R' |
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52 | #define RD_MAG3 'D' |
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53 | |||
54 | /** |
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55 | * RAM disk data encoding types |
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56 | */ |
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57 | #define RD_DATA_NONE 0 |
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58 | #define RD_DATA_LSB 1 /* Least significant byte first (little endian) */ |
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59 | #define RD_DATA_MSB 2 /* Most signigicant byte first (big endian) */ |
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60 | |||
61 | /** |
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62 | * RAM disk error return codes |
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63 | */ |
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64 | #define RE_OK 0 /* No error */ |
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65 | #define RE_INVALID 1 /* Invalid RAM disk image */ |
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66 | #define RE_UNSUPPORTED 2 /* Non-supported image (e.g. wrong version) */ |
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67 | |||
68 | /** RAM disk header */ |
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4055 | trochtova | 69 | struct rd_header { |
2002 | decky | 70 | uint8_t magic[RD_MAGIC_SIZE]; |
71 | uint8_t version; |
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72 | uint8_t data_type; |
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73 | uint32_t header_size; |
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74 | uint64_t data_size; |
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4055 | trochtova | 75 | } __attribute__ ((packed)); |
2002 | decky | 76 | |
4055 | trochtova | 77 | typedef struct rd_header rd_header_t; |
2002 | decky | 78 | |
4055 | trochtova | 79 | extern int init_rd(rd_header_t *addr, size_t size); |
80 | |||
1999 | decky | 81 | #endif |
82 | |||
83 | /** @} |
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84 | */ |