| 39,8 → 39,10 |
|---|
| |
| #include <lib/rd.h> |
| #include <arch/byteorder.h> |
| #include <mm/frame.h> |
| #include <sysinfo/sysinfo.h> |
| |
| int init_rd(rd_header * header) |
| int init_rd(rd_header * header, size_t size) |
| { |
| /* Identify RAM disk */ |
| if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) || (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3)) |
| 50,18 → 52,33 |
|---|
| if (header->version != RD_VERSION) |
| return RE_UNSUPPORTED; |
| |
| uint64_t hsize; |
| uint32_t hsize; |
| uint64_t dsize; |
| switch (header->data_type) { |
| case RD_DATA_LSB: |
| hsize = uint64_t_le2host(header->header_size); |
| hsize = uint32_t_le2host(header->header_size); |
| dsize = uint64_t_le2host(header->data_size); |
| break; |
| // case RD_DATA_MSB: |
| // hsize = uint64_t_be2host(header->header_size); |
| // break; |
| case RD_DATA_MSB: |
| hsize = uint32_t_be2host(header->header_size); |
| dsize = uint64_t_le2host(header->data_size); |
| break; |
| default: |
| return RE_UNSUPPORTED; |
| } |
| |
| |
| if ((hsize % FRAME_SIZE) || (dsize % FRAME_SIZE)) |
| return RE_UNSUPPORTED; |
| |
| if (hsize > size) |
| return RE_INVALID; |
| |
| if ((uint64_t) hsize + dsize > size) |
| dsize = size - hsize; |
| |
| sysinfo_set_item_val("rd", NULL, true); |
| sysinfo_set_item_val("rd.size", NULL, dsize); |
| sysinfo_set_item_val("rd.address.physical", NULL, (unative_t) KA2PA((void *) header + hsize)); |
| |
| return RE_OK; |
| } |