/* * Copyright (c) 2018 naehrwert * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <string.h> #include "nx_emmc.h" #include "emummc.h" #include "../mem/heap.h" #include "../utils/list.h" void nx_emmc_gpt_parse(link_t *gpt, sdmmc_storage_t *storage) { u8 *buf = (u8 *)malloc(NX_GPT_NUM_BLOCKS * NX_EMMC_BLOCKSIZE); emummc_storage_read(storage, NX_GPT_FIRST_LBA, NX_GPT_NUM_BLOCKS, buf); gpt_header_t *hdr = (gpt_header_t *)buf; for (u32 i = 0; i < hdr->num_part_ents; i++) { gpt_entry_t *ent = (gpt_entry_t *)(buf + (hdr->part_ent_lba - 1) * NX_EMMC_BLOCKSIZE + i * sizeof(gpt_entry_t)); emmc_part_t *part = (emmc_part_t *)malloc(sizeof(emmc_part_t)); part->lba_start = ent->lba_start; part->lba_end = ent->lba_end; part->attrs = ent->attrs; //HACK for (u32 i = 0; i < 36; i++) part->name[i] = ent->name[i]; part->name[36] = 0; list_append(gpt, &part->link); } free(buf); } void nx_emmc_gpt_free(link_t *gpt) { LIST_FOREACH_SAFE(iter, gpt) free(CONTAINER_OF(iter, emmc_part_t, link)); } emmc_part_t *nx_emmc_part_find(link_t *gpt, const char *name) { LIST_FOREACH_ENTRY(emmc_part_t, part, gpt, link) if (!strcmp(part->name, name)) return part; return NULL; } int nx_emmc_part_read(sdmmc_storage_t *storage, emmc_part_t *part, u32 sector_off, u32 num_sectors, void *buf) { // The last LBA is inclusive. if (part->lba_start + sector_off > part->lba_end) return 0; return emummc_storage_read(storage, part->lba_start + sector_off, num_sectors, buf); } int nx_emmc_part_write(sdmmc_storage_t *storage, emmc_part_t *part, u32 sector_off, u32 num_sectors, void *buf) { // The last LBA is inclusive. if (part->lba_start + sector_off > part->lba_end) return 0; return sdmmc_storage_write(storage, part->lba_start + sector_off, num_sectors, buf); }