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| Rev 2141 | Rev 2445 | ||
|---|---|---|---|
| Line 40... | Line 40... | ||
| 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> |
42 | #include <mm/frame.h> |
| 43 | #include <sysinfo/sysinfo.h> |
43 | #include <sysinfo/sysinfo.h> |
| 44 | #include <ddi/ddi.h> |
44 | #include <ddi/ddi.h> |
| - | 45 | #include <print.h> |
|
| - | 46 | #include <align.h> |
|
| 45 | 47 | ||
| 46 | static parea_t rd_parea; /**< Physical memory area for rd. */ |
48 | static parea_t rd_parea; /**< Physical memory area for rd. */ |
| 47 | 49 | ||
| - | 50 | /** |
|
| - | 51 | * RAM disk initialization routine. At this point, the RAM disk memory is shared |
|
| - | 52 | * and information about the share is provided as sysinfo values to the userspace |
|
| - | 53 | * tasks. |
|
| - | 54 | */ |
|
| 48 | int init_rd(rd_header * header, size_t size) |
55 | int init_rd(rd_header * header, size_t size) |
| 49 | { |
56 | { |
| 50 | /* Identify RAM disk */ |
57 | /* Identify RAM disk */ |
| 51 | if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) || |
58 | if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) || |
| 52 | (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3)) |
59 | (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3)) |
| Line 72... | Line 79... | ||
| 72 | } |
79 | } |
| 73 | 80 | ||
| 74 | if ((hsize % FRAME_SIZE) || (dsize % FRAME_SIZE)) |
81 | if ((hsize % FRAME_SIZE) || (dsize % FRAME_SIZE)) |
| 75 | return RE_UNSUPPORTED; |
82 | return RE_UNSUPPORTED; |
| 76 | 83 | ||
| - | 84 | if (dsize % FRAME_SIZE) |
|
| - | 85 | return RE_UNSUPPORTED; |
|
| - | 86 | ||
| 77 | if (hsize > size) |
87 | if (hsize > size) |
| 78 | return RE_INVALID; |
88 | return RE_INVALID; |
| 79 | 89 | ||
| 80 | if ((uint64_t) hsize + dsize > size) |
90 | if ((uint64_t) hsize + dsize > size) |
| 81 | dsize = size - hsize; |
91 | dsize = size - hsize; |
| 82 | 92 | ||
| 83 | rd_parea.pbase = KA2PA((void *) header + hsize); |
93 | rd_parea.pbase = ALIGN_DOWN((uintptr_t) KA2PA((void *) header + hsize), FRAME_SIZE); |
| 84 | rd_parea.vbase = (uintptr_t) ((void *) header + hsize); |
94 | rd_parea.vbase = (uintptr_t) ((void *) header + hsize); |
| 85 | rd_parea.frames = SIZE2FRAMES(dsize); |
95 | rd_parea.frames = SIZE2FRAMES(dsize); |
| 86 | rd_parea.cacheable = true; |
96 | rd_parea.cacheable = true; |
| 87 | ddi_parea_register(&rd_parea); |
97 | ddi_parea_register(&rd_parea); |
| 88 | 98 | ||
| 89 | sysinfo_set_item_val("rd", NULL, true); |
99 | sysinfo_set_item_val("rd", NULL, true); |
| - | 100 | sysinfo_set_item_val("rd.header_size", NULL, hsize); |
|
| 90 | sysinfo_set_item_val("rd.size", NULL, dsize); |
101 | sysinfo_set_item_val("rd.size", NULL, dsize); |
| 91 | sysinfo_set_item_val("rd.address.physical", NULL, (unative_t) |
102 | sysinfo_set_item_val("rd.address.physical", NULL, (unative_t) |
| 92 | KA2PA((void *) header + hsize)); |
103 | KA2PA((void *) header + hsize)); |
| 93 | 104 | ||
| 94 | return RE_OK; |
105 | return RE_OK; |