Picklock_RCM/source/storage/emummc.c

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/*
* Copyright (c) 2019 CTCaer
*
* 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 <stdlib.h>
#include "emummc.h"
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#include <storage/sdmmc.h>
#include "../config.h"
#include <utils/ini.h>
#include <gfx_utils.h>
#include <libs/fatfs/ff.h>
#include <mem/heap.h>
#include "../storage/nx_emmc.h"
#include <storage/nx_sd.h>
#include <utils/list.h>
#include <utils/types.h>
extern hekate_config h_cfg;
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emummc_cfg_t emu_cfg = { 0 };
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void emummc_load_cfg()
{
emu_cfg.enabled = 0;
emu_cfg.path = NULL;
emu_cfg.sector = 0;
emu_cfg.id = 0;
emu_cfg.file_based_part_size = 0;
emu_cfg.active_part = 0;
emu_cfg.fs_ver = 0;
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if (!emu_cfg.nintendo_path)
emu_cfg.nintendo_path = (char *)malloc(0x80);
if (!emu_cfg.emummc_file_based_path)
emu_cfg.emummc_file_based_path = (char *)malloc(0x80);
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emu_cfg.nintendo_path[0] = 0;
emu_cfg.emummc_file_based_path[0] = 0;
LIST_INIT(ini_sections);
if (ini_parse(&ini_sections, "emuMMC/emummc.ini", false))
{
LIST_FOREACH_ENTRY(ini_sec_t, ini_sec, &ini_sections, link)
{
if (ini_sec->type == INI_CHOICE)
{
if (strcmp(ini_sec->name, "emummc"))
continue;
LIST_FOREACH_ENTRY(ini_kv_t, kv, &ini_sec->kvs, link)
{
if (!strcmp("enabled", kv->key))
emu_cfg.enabled = atoi(kv->val);
else if (!strcmp("sector", kv->key))
emu_cfg.sector = strtol(kv->val, NULL, 16);
else if (!strcmp("id", kv->key))
emu_cfg.id = strtol(kv->val, NULL, 16);
else if (!strcmp("path", kv->key))
emu_cfg.path = kv->val;
else if (!strcmp("nintendo_path", kv->key))
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strcpy(emu_cfg.nintendo_path, kv->val);
}
break;
}
}
}
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}
bool emummc_set_path(char *path)
{
FIL fp;
bool found = false;
strcpy(emu_cfg.emummc_file_based_path, path);
strcat(emu_cfg.emummc_file_based_path, "/raw_based");
if (!f_open(&fp, emu_cfg.emummc_file_based_path, FA_READ))
{
if (!f_read(&fp, &emu_cfg.sector, 4, NULL))
if (emu_cfg.sector)
found = true;
}
else
{
strcpy(emu_cfg.emummc_file_based_path, path);
strcat(emu_cfg.emummc_file_based_path, "/file_based");
if (!f_stat(emu_cfg.emummc_file_based_path, NULL))
{
emu_cfg.sector = 0;
emu_cfg.path = path;
found = true;
}
}
if (found)
{
emu_cfg.enabled = 1;
emu_cfg.id = 0;
strcpy(emu_cfg.nintendo_path, path);
strcat(emu_cfg.nintendo_path, "/Nintendo");
}
return found;
}
static int emummc_raw_get_part_off(int part_idx)
{
switch (part_idx)
{
case 0:
return 2;
case 1:
return 0;
case 2:
return 1;
}
return 2;
}
int emummc_storage_init_mmc(sdmmc_storage_t *storage, sdmmc_t *sdmmc)
{
FILINFO fno;
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emu_cfg.active_part = 0;
// Always init eMMC even when in emuMMC. eMMC is needed from theh emuMMC driver anyway.
if (!sdmmc_storage_init_mmc(storage, sdmmc, SDMMC_BUS_WIDTH_8, SDHCI_TIMING_MMC_HS400))
return 2;
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if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
return 0;
if (!sd_mount())
goto out;
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if (!emu_cfg.sector)
{
strcpy(emu_cfg.emummc_file_based_path, emu_cfg.path);
strcat(emu_cfg.emummc_file_based_path, "/eMMC");
if (f_stat(emu_cfg.emummc_file_based_path, &fno))
{
EPRINTF("Failed to open eMMC folder.");
goto out;
}
f_chmod(emu_cfg.emummc_file_based_path, AM_ARC, AM_ARC);
strcat(emu_cfg.emummc_file_based_path, "/00");
if (f_stat(emu_cfg.emummc_file_based_path, &fno))
{
EPRINTF("Failed to open emuMMC rawnand.");
goto out;
}
emu_cfg.file_based_part_size = fno.fsize >> 9;
}
return 0;
out:
return 1;
}
int emummc_storage_end(sdmmc_storage_t *storage)
{
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if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
sdmmc_storage_end(storage);
else
sd_end();
return 1;
}
int emummc_storage_read(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, void *buf)
{
FIL fp;
if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
return sdmmc_storage_read(storage, sector, num_sectors, buf);
else if (emu_cfg.sector)
{
sector += emu_cfg.sector;
sector += emummc_raw_get_part_off(emu_cfg.active_part) * 0x2000;
return sdmmc_storage_read(&sd_storage, sector, num_sectors, buf);
}
else
{
if (!emu_cfg.active_part)
{
u32 file_part = sector / emu_cfg.file_based_part_size;
sector = sector % emu_cfg.file_based_part_size;
if (file_part >= 10)
itoa(file_part, emu_cfg.emummc_file_based_path + strlen(emu_cfg.emummc_file_based_path) - 2, 10);
else
{
emu_cfg.emummc_file_based_path[strlen(emu_cfg.emummc_file_based_path) - 2] = '0';
itoa(file_part, emu_cfg.emummc_file_based_path + strlen(emu_cfg.emummc_file_based_path) - 1, 10);
}
}
if (f_open(&fp, emu_cfg.emummc_file_based_path, FA_READ))
{
EPRINTF("Failed to open emuMMC image.");
return 0;
}
f_lseek(&fp, (u64)sector << 9);
if (f_read(&fp, buf, (u64)num_sectors << 9, NULL))
{
EPRINTF("Failed to read emuMMC image.");
f_close(&fp);
return 0;
}
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f_close(&fp);
return 1;
}
return 1;
}
int emummc_storage_write(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, void *buf)
{
FIL fp;
if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
return sdmmc_storage_write(storage, sector, num_sectors, buf);
else if (emu_cfg.sector)
{
sector += emu_cfg.sector;
sector += emummc_raw_get_part_off(emu_cfg.active_part) * 0x2000;
return sdmmc_storage_write(&sd_storage, sector, num_sectors, buf);
}
else
{
if (!emu_cfg.active_part)
{
u32 file_part = sector / emu_cfg.file_based_part_size;
sector = sector % emu_cfg.file_based_part_size;
if (file_part >= 10)
itoa(file_part, emu_cfg.emummc_file_based_path + strlen(emu_cfg.emummc_file_based_path) - 2, 10);
else
{
emu_cfg.emummc_file_based_path[strlen(emu_cfg.emummc_file_based_path) - 2] = '0';
itoa(file_part, emu_cfg.emummc_file_based_path + strlen(emu_cfg.emummc_file_based_path) - 1, 10);
}
}
if (f_open(&fp, emu_cfg.emummc_file_based_path, FA_WRITE))
{
gfx_printf("e5\n");
return 0;
}
f_lseek(&fp, (u64)sector << 9);
if (f_write(&fp, buf, (u64)num_sectors << 9, NULL))
{
gfx_printf("e6\n");
f_close(&fp);
return 0;
}
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f_close(&fp);
return 1;
}
}
int emummc_storage_set_mmc_partition(sdmmc_storage_t *storage, u32 partition)
{
emu_cfg.active_part = partition;
if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
return sdmmc_storage_set_mmc_partition(storage, partition);
else if (emu_cfg.sector)
return 1;
else
{
strcpy(emu_cfg.emummc_file_based_path, emu_cfg.path);
strcat(emu_cfg.emummc_file_based_path, "/eMMC");
switch (partition)
{
case 0:
strcat(emu_cfg.emummc_file_based_path, "/00");
break;
case 1:
strcat(emu_cfg.emummc_file_based_path, "/BOOT0");
break;
case 2:
strcat(emu_cfg.emummc_file_based_path, "/BOOT1");
break;
}
return 1;
}
return 1;
}