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