miniipc_sdmmc_read
int miniipc_sdmmc_read(uint32_t, uint32_t, void *);
error = miniipc_sdmmc_read(0, 1, sdmmc_buf);
error = miniipc_sdmmc_read(le32toh(p->p_offset) + dblk,
error = miniipc_sdmmc_read(dblk + LABELSECTOR, 1, sdmmc_buf);