mirror of
https://github.com/suchmememanyskill/TegraExplorer.git
synced 2024-11-26 22:02:08 +00:00
300 lines
6.9 KiB
C
300 lines
6.9 KiB
C
/*
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* Copyright (c) 2019-2022 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <bdk.h>
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#include "emummc.h"
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#include "../config.h"
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#include <libs/fatfs/ff.h>
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extern hekate_config h_cfg;
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emummc_cfg_t emu_cfg = { 0 };
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void emummc_load_cfg()
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{
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emu_cfg.enabled = 0;
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emu_cfg.path = NULL;
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emu_cfg.sector = 0;
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emu_cfg.id = 0;
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emu_cfg.file_based_part_size = 0;
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emu_cfg.active_part = 0;
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emu_cfg.fs_ver = 0;
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if (!emu_cfg.nintendo_path)
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emu_cfg.nintendo_path = (char *)malloc(0x200);
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if (!emu_cfg.emummc_file_based_path)
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emu_cfg.emummc_file_based_path = (char *)malloc(0x200);
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emu_cfg.nintendo_path[0] = 0;
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emu_cfg.emummc_file_based_path[0] = 0;
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LIST_INIT(ini_sections);
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if (ini_parse(&ini_sections, "emuMMC/emummc.ini", false))
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{
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LIST_FOREACH_ENTRY(ini_sec_t, ini_sec, &ini_sections, link)
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{
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if (ini_sec->type == INI_CHOICE)
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{
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if (strcmp(ini_sec->name, "emummc"))
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continue;
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LIST_FOREACH_ENTRY(ini_kv_t, kv, &ini_sec->kvs, link)
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{
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if (!strcmp("enabled", kv->key))
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emu_cfg.enabled = atoi(kv->val);
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else if (!strcmp("sector", kv->key))
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emu_cfg.sector = strtol(kv->val, NULL, 16);
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else if (!strcmp("id", kv->key))
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emu_cfg.id = strtol(kv->val, NULL, 16);
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else if (!strcmp("path", kv->key))
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emu_cfg.path = kv->val;
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else if (!strcmp("nintendo_path", kv->key))
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strcpy(emu_cfg.nintendo_path, kv->val);
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}
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break;
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}
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}
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}
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}
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bool emummc_set_path(char *path)
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{
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FIL fp;
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bool found = false;
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strcpy(emu_cfg.emummc_file_based_path, path);
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strcat(emu_cfg.emummc_file_based_path, "/raw_based");
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if (!f_open(&fp, emu_cfg.emummc_file_based_path, FA_READ))
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{
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if (!f_read(&fp, &emu_cfg.sector, 4, NULL))
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if (emu_cfg.sector)
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found = true;
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}
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else
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{
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strcpy(emu_cfg.emummc_file_based_path, path);
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strcat(emu_cfg.emummc_file_based_path, "/file_based");
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if (!f_stat(emu_cfg.emummc_file_based_path, NULL))
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{
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emu_cfg.sector = 0;
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emu_cfg.path = path;
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found = true;
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}
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}
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if (found)
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{
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emu_cfg.enabled = 1;
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// Get ID from path.
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u32 id_from_path = 0;
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u32 path_size = strlen(path);
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if (path_size >= 4)
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memcpy(&id_from_path, path + path_size - 4, 4);
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emu_cfg.id = id_from_path;
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strcpy(emu_cfg.nintendo_path, path);
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strcat(emu_cfg.nintendo_path, "/Nintendo");
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}
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return found;
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}
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static int emummc_raw_get_part_off(int part_idx)
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{
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switch (part_idx)
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{
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case 0:
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return 2;
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case 1:
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return 0;
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case 2:
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return 1;
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}
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return 2;
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}
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int emummc_storage_init_mmc()
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{
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FILINFO fno;
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emu_cfg.active_part = 0;
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// Always init eMMC even when in emuMMC. eMMC is needed from the emuMMC driver anyway.
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if (!emmc_initialize(false))
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return 2;
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if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
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return 0;
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if (!sd_mount())
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goto out;
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if (!emu_cfg.sector)
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{
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strcpy(emu_cfg.emummc_file_based_path, emu_cfg.path);
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strcat(emu_cfg.emummc_file_based_path, "/eMMC");
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if (f_stat(emu_cfg.emummc_file_based_path, &fno))
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{
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EPRINTF("Failed to open eMMC folder.");
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goto out;
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}
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f_chmod(emu_cfg.emummc_file_based_path, AM_ARC, AM_ARC);
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strcat(emu_cfg.emummc_file_based_path, "/00");
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if (f_stat(emu_cfg.emummc_file_based_path, &fno))
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{
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EPRINTF("Failed to open emuMMC rawnand.");
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goto out;
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}
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emu_cfg.file_based_part_size = fno.fsize >> 9;
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}
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return 0;
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out:
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return 1;
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}
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int emummc_storage_end()
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{
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if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
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sdmmc_storage_end(&emmc_storage);
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return 1;
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}
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int emummc_storage_read(u32 sector, u32 num_sectors, void *buf)
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{
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FIL fp;
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if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
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return sdmmc_storage_read(&emmc_storage, sector, num_sectors, buf);
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else if (emu_cfg.sector)
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{
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sector += emu_cfg.sector;
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sector += emummc_raw_get_part_off(emu_cfg.active_part) * 0x2000;
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return sdmmc_storage_read(&sd_storage, sector, num_sectors, buf);
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}
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else
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{
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if (!emu_cfg.active_part)
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{
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u32 file_part = sector / emu_cfg.file_based_part_size;
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sector = sector % emu_cfg.file_based_part_size;
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if (file_part >= 10)
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itoa(file_part, emu_cfg.emummc_file_based_path + strlen(emu_cfg.emummc_file_based_path) - 2, 10);
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else
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{
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emu_cfg.emummc_file_based_path[strlen(emu_cfg.emummc_file_based_path) - 2] = '0';
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itoa(file_part, emu_cfg.emummc_file_based_path + strlen(emu_cfg.emummc_file_based_path) - 1, 10);
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}
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}
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if (f_open(&fp, emu_cfg.emummc_file_based_path, FA_READ))
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{
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EPRINTF("Failed to open emuMMC image.");
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return 0;
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}
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f_lseek(&fp, (u64)sector << 9);
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if (f_read(&fp, buf, (u64)num_sectors << 9, NULL))
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{
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EPRINTF("Failed to read emuMMC image.");
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f_close(&fp);
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return 0;
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}
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f_close(&fp);
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return 1;
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}
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return 1;
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}
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int emummc_storage_write(u32 sector, u32 num_sectors, void *buf)
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{
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FIL fp;
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if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
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return sdmmc_storage_write(&emmc_storage, sector, num_sectors, buf);
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else if (emu_cfg.sector)
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{
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sector += emu_cfg.sector;
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sector += emummc_raw_get_part_off(emu_cfg.active_part) * 0x2000;
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return sdmmc_storage_write(&sd_storage, sector, num_sectors, buf);
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}
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else
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{
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if (!emu_cfg.active_part)
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{
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u32 file_part = sector / emu_cfg.file_based_part_size;
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sector = sector % emu_cfg.file_based_part_size;
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if (file_part >= 10)
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itoa(file_part, emu_cfg.emummc_file_based_path + strlen(emu_cfg.emummc_file_based_path) - 2, 10);
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else
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{
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emu_cfg.emummc_file_based_path[strlen(emu_cfg.emummc_file_based_path) - 2] = '0';
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itoa(file_part, emu_cfg.emummc_file_based_path + strlen(emu_cfg.emummc_file_based_path) - 1, 10);
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}
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}
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if (f_open(&fp, emu_cfg.emummc_file_based_path, FA_WRITE))
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return 0;
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f_lseek(&fp, (u64)sector << 9);
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if (f_write(&fp, buf, (u64)num_sectors << 9, NULL))
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{
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f_close(&fp);
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return 0;
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}
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f_close(&fp);
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return 1;
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}
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}
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int emummc_storage_set_mmc_partition(u32 partition)
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{
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emu_cfg.active_part = partition;
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sdmmc_storage_set_mmc_partition(&emmc_storage, partition);
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if (!emu_cfg.enabled || h_cfg.emummc_force_disable || emu_cfg.sector)
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return 1;
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else
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{
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strcpy(emu_cfg.emummc_file_based_path, emu_cfg.path);
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strcat(emu_cfg.emummc_file_based_path, "/eMMC");
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switch (partition)
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{
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case 0:
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strcat(emu_cfg.emummc_file_based_path, "/00");
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break;
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case 1:
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strcat(emu_cfg.emummc_file_based_path, "/BOOT0");
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break;
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case 2:
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strcat(emu_cfg.emummc_file_based_path, "/BOOT1");
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break;
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}
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return 1;
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}
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return 1;
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}
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