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| Rev 2002 | Rev 2005 | ||
|---|---|---|---|
| Line 37... | Line 37... | ||
| 37 | * Support for RAM disk images. |
37 | * Support for RAM disk images. |
| 38 | */ |
38 | */ |
| 39 | 39 | ||
| 40 | #include <lib/rd.h> |
40 | #include <lib/rd.h> |
| 41 | #include <arch/byteorder.h> |
41 | #include <arch/byteorder.h> |
| - | 42 | #include <mm/frame.h> |
|
| - | 43 | #include <sysinfo/sysinfo.h> |
|
| 42 | 44 | ||
| 43 | int init_rd(rd_header * header) |
45 | int init_rd(rd_header * header, size_t size) |
| 44 | { |
46 | { |
| 45 | /* Identify RAM disk */ |
47 | /* Identify RAM disk */ |
| 46 | if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) || (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3)) |
48 | if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) || (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3)) |
| 47 | return RE_INVALID; |
49 | return RE_INVALID; |
| 48 | 50 | ||
| 49 | /* Identify version */ |
51 | /* Identify version */ |
| 50 | if (header->version != RD_VERSION) |
52 | if (header->version != RD_VERSION) |
| 51 | return RE_UNSUPPORTED; |
53 | return RE_UNSUPPORTED; |
| 52 | 54 | ||
| - | 55 | uint32_t hsize; |
|
| 53 | uint64_t hsize; |
56 | uint64_t dsize; |
| 54 | switch (header->data_type) { |
57 | switch (header->data_type) { |
| 55 | case RD_DATA_LSB: |
58 | case RD_DATA_LSB: |
| 56 | hsize = uint64_t_le2host(header->header_size); |
59 | hsize = uint32_t_le2host(header->header_size); |
| - | 60 | dsize = uint64_t_le2host(header->data_size); |
|
| - | 61 | break; |
|
| - | 62 | case RD_DATA_MSB: |
|
| - | 63 | hsize = uint32_t_be2host(header->header_size); |
|
| - | 64 | dsize = uint64_t_le2host(header->data_size); |
|
| 57 | break; |
65 | break; |
| 58 | // case RD_DATA_MSB: |
- | |
| 59 | // hsize = uint64_t_be2host(header->header_size); |
- | |
| 60 | // break; |
- | |
| 61 | default: |
66 | default: |
| 62 | return RE_UNSUPPORTED; |
67 | return RE_UNSUPPORTED; |
| 63 | } |
68 | } |
| - | 69 | ||
| - | 70 | if ((hsize % FRAME_SIZE) || (dsize % FRAME_SIZE)) |
|
| - | 71 | return RE_UNSUPPORTED; |
|
| 64 | 72 | ||
| - | 73 | if (hsize > size) |
|
| - | 74 | return RE_INVALID; |
|
| - | 75 | ||
| - | 76 | if ((uint64_t) hsize + dsize > size) |
|
| - | 77 | dsize = size - hsize; |
|
| - | 78 | ||
| - | 79 | sysinfo_set_item_val("rd", NULL, true); |
|
| - | 80 | sysinfo_set_item_val("rd.size", NULL, dsize); |
|
| - | 81 | sysinfo_set_item_val("rd.address.physical", NULL, (unative_t) KA2PA((void *) header + hsize)); |
|
| 65 | 82 | ||
| 66 | return RE_OK; |
83 | return RE_OK; |
| 67 | } |
84 | } |
| 68 | 85 | ||
| 69 | /** @} |
86 | /** @} |