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nxdumptool/source/gamecard.h
2020-10-04 05:25:42 -04:00

242 lines
11 KiB
C

/*
* gamecard.h
*
* Copyright (c) 2020, DarkMatterCore <pabloacurielz@gmail.com>.
*
* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
*
* nxdumptool 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.
*
* nxdumptool 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/>.
*/
#pragma once
#ifndef __GAMECARD_H__
#define __GAMECARD_H__
#include "fs_ext.h"
#define GAMECARD_HEAD_MAGIC 0x48454144 /* "HEAD". */
#define GAMECARD_MEDIA_UNIT_SIZE 0x200
#define GAMECARD_MEDIA_UNIT_OFFSET(x) ((u64)(x) * GAMECARD_MEDIA_UNIT_SIZE)
#define GAMECARD_UPDATE_TID (u64)0x0100000000000816
#define GAMECARD_CERTIFICATE_OFFSET 0x7000
/// Encrypted using AES-128-ECB with the common titlekek generator key (stored in the .rodata segment from the Lotus firmware).
typedef struct {
u64 package_id; ///< Matches package_id from GameCardHeader.
u8 reserved[0x8]; ///< Just zeroes.
} GameCardKeySource;
/// Plaintext area. Dumped from FS program memory.
typedef struct {
GameCardKeySource key_source;
u8 encrypted_titlekey[0x10]; ///< Encrypted using AES-128-CCM with the decrypted key_source and the nonce from this section.
u8 mac[0x10]; ///< Used to verify the validity of the decrypted titlekey.
u8 nonce[0xC]; ///< Used as the IV to decrypt encrypted_titlekey using AES-128-CCM.
u8 reserved[0x1C4];
} GameCardInitialData;
/// Encrypted using AES-128-CTR with the key and IV/counter from the `GameCardTitleKeyEncryption` section. Assumed to be all zeroes in retail gamecards.
typedef struct {
u8 titlekey[0x10]; ///< Decrypted titlekey from the `GameCardInitialData` section.
u8 reserved[0xCF0];
} GameCardTitleKey;
/// Encrypted using RSA-2048-OAEP and a private OAEP key from AuthoringTool. Assumed to be all zeroes in retail gamecards.
typedef struct {
u8 titlekey_encryption_key[0x10]; ///< Used as the AES-128-CTR key for the `GameCardTitleKey` section. Randomly generated during XCI creation by AuthoringTool.
u8 titlekey_encryption_iv[0x10]; ///< Used as the AES-128-CTR IV/counter for the `GameCardTitleKey` section. Randomly generated during XCI creation by AuthoringTool.
u8 reserved[0xE0];
} GameCardTitleKeyEncryption;
/// Used to secure communications between the Lotus and the inserted gamecard.
/// Precedes the gamecard header.
typedef struct {
GameCardInitialData initial_data;
GameCardTitleKey titlekey_block;
GameCardTitleKeyEncryption titlekey_encryption;
} GameCardKeyArea;
typedef enum {
GameCardKekIndex_Version0 = 0,
GameCardKekIndex_VersionForDev = 1
} GameCardKekIndex;
typedef struct {
u8 kek_index : 4; ///< GameCardKekIndex.
u8 titlekey_dec_index : 4;
} GameCardKeyIndex;
typedef enum {
GameCardRomSize_1GiB = 0xFA,
GameCardRomSize_2GiB = 0xF8,
GameCardRomSize_4GiB = 0xF0,
GameCardRomSize_8GiB = 0xE0,
GameCardRomSize_16GiB = 0xE1,
GameCardRomSize_32GiB = 0xE2
} GameCardRomSize;
typedef enum {
GameCardFlags_AutoBoot = BIT(0),
GameCardFlags_HistoryErase = BIT(1),
GameCardFlags_RepairTool = BIT(2),
GameCardFlags_DifferentRegionCupToTerraDevice = BIT(3),
GameCardFlags_DifferentRegionCupToGlobalDevice = BIT(4)
} GameCardFlags;
typedef enum {
GameCardSelSec_ForT1 = 1,
GameCardSelSec_ForT2 = 2
} GameCardSelSec;
typedef enum {
GameCardFwVersion_ForDev = 0,
GameCardFwVersion_Before400NUP = 1, ///< cup_version < 268435456 (4.0.0-0.0) in GameCardHeaderEncryptedArea.
GameCardFwVersion_Since400NUP = 2 ///< cup_version >= 268435456 (4.0.0-0.0) in GameCardHeaderEncryptedArea.
} GameCardFwVersion;
typedef enum {
GameCardAccCtrl1_25MHz = 0xA10011,
GameCardAccCtrl1_50MHz = 0xA10010 ///< GameCardRomSize_8GiB or greater.
} GameCardAccCtrl1;
typedef enum {
GameCardCompatibilityType_Normal = 0,
GameCardCompatibilityType_Terra = 1
} GameCardCompatibilityType;
typedef struct {
u32 GameCardFwMode_Relstep : 8;
u32 GameCardFwMode_Micro : 8;
u32 GameCardFwMode_Minor : 8;
u32 GameCardFwMode_Major : 8;
} GameCardFwMode;
typedef struct {
u32 GameCardCupVersion_MinorRelstep : 8;
u32 GameCardCupVersion_MajorRelstep : 8;
u32 GameCardCupVersion_Micro : 4;
u32 GameCardCupVersion_Minor : 6;
u32 GameCardCupVersion_Major : 6;
} GameCardCupVersion;
/// Encrypted using AES-128-CBC with the XCI header key (found in FS program memory under newer versions of HOS) and the IV from `GameCardHeader`.
/// Key hashes for documentation purposes:
/// Production XCI header key hash: 2E36CC55157A351090A73E7AE77CF581F69B0B6E48FB066C984879A6ED7D2E96
/// Development XCI header key hash: 61D5C02244188810E2E3DE69341AC0F3C7653D370C6D3F77CA82B0B7E59F39AD
typedef struct {
u64 fw_version; ///< GameCardFwVersion.
u32 acc_ctrl_1; ///< GameCardAccCtrl1.
u32 wait_1_time_read; ///< Always 0x1388.
u32 wait_2_time_read; ///< Always 0.
u32 wait_1_time_write; ///< Always 0.
u32 wait_2_time_write; ///< Always 0.
GameCardFwMode fw_mode;
GameCardCupVersion cup_version;
u8 compatibility_type; ///< GameCardCompatibilityType.
u8 reserved_1[0x3];
u64 cup_hash;
u64 cup_id; ///< Must match GAMECARD_UPDATE_TID.
u8 reserved_2[0x38];
} GameCardHeaderEncryptedArea;
/// Placed after the `GameCardKeyArea` section.
typedef struct {
u8 signature[0x100]; ///< RSA-2048 PKCS #1 signature over the rest of the header.
u32 magic; ///< "HEAD".
u32 secure_area_start_address; ///< Expressed in GAMECARD_MEDIA_UNIT_SIZE blocks.
u32 backup_area_start_address; ///< Always 0xFFFFFFFF.
GameCardKeyIndex key_index;
u8 rom_size; ///< GameCardRomSize.
u8 header_version; ///< Always 0.
u8 flags; ///< GameCardFlags.
u64 package_id;
u32 valid_data_end_address; ///< Expressed in GAMECARD_MEDIA_UNIT_SIZE blocks.
u8 reserved[0x4];
u8 iv[0x10];
u64 partition_fs_header_address; ///< Root HFS0 header offset.
u64 partition_fs_header_size; ///< Root HFS0 header size.
u8 partition_fs_header_hash[SHA256_HASH_SIZE];
u8 initial_data_hash[SHA256_HASH_SIZE];
u32 sel_sec; ///< GameCardSelSec.
u32 sel_t1_key; ///< Always 2.
u32 sel_key; ///> Always 0.
u32 normal_area_end_address; ///< Expressed in GAMECARD_MEDIA_UNIT_SIZE blocks.
GameCardHeaderEncryptedArea encrypted_area;
} GameCardHeader;
typedef enum {
GameCardStatus_NotInserted = 0,
GameCardStatus_InsertedAndInfoNotLoaded = 1, ///< Most likely related to the "nogc" patch being enabled. Means nothing at all can be done with the inserted gamecard.
GameCardStatus_InsertedAndInfoLoaded = 2
} GameCardStatus;
typedef enum {
GameCardHashFileSystemPartitionType_Root = 0,
GameCardHashFileSystemPartitionType_Update = 1,
GameCardHashFileSystemPartitionType_Logo = 2, ///< Only available in GameCardFwVersion_Since400NUP gamecards.
GameCardHashFileSystemPartitionType_Normal = 3,
GameCardHashFileSystemPartitionType_Secure = 4,
GameCardHashFileSystemPartitionType_Boot = 5, ///< Only available in Terra (Tencent) gamecards.
GameCardHashFileSystemPartitionType_Count = 6 ///< Not a real value.
} GameCardHashFileSystemPartitionType;
/// Initializes data needed to access raw gamecard storage areas.
/// Also spans a background thread to automatically detect gamecard status changes and to cache data from the inserted gamecard.
bool gamecardInitialize(void);
/// Deinitializes data generated by gamecardInitialize().
/// This includes destroying the background gamecard detection thread and freeing all cached gamecard data.
void gamecardExit(void);
/// Returns an usermode gamecard status change event that can be used to wait for status changes on other threads.
/// If the gamecard interface hasn't been initialized, this returns NULL.
UEvent *gamecardGetStatusChangeUserEvent(void);
/// Returns the current GameCardStatus value.
u8 gamecardGetStatus(void);
/// Used to read data from the inserted gamecard.
/// All required handles, changes between normal <-> secure storage areas and proper offset calculations are managed internally.
/// 'offset' + 'read_size' must not exceed the value returned by gamecardGetTotalSize().
bool gamecardReadStorage(void *out, u64 read_size, u64 offset);
/// Miscellaneous functions.
bool gamecardGetKeyArea(GameCardKeyArea *out);
bool gamecardGetHeader(GameCardHeader *out);
bool gamecardGetCertificate(FsGameCardCertificate *out);
bool gamecardGetTotalSize(u64 *out);
bool gamecardGetTrimmedSize(u64 *out);
bool gamecardGetRomCapacity(u64 *out); ///< Not the same as gamecardGetTotalSize().
bool gamecardGetBundledFirmwareUpdateVersion(u32 *out);
/// Returns a pointer to a string holding the name of the provided hash file system partition type. Returns NULL if the provided value is invalid.
const char *gamecardGetHashFileSystemPartitionName(u8 hfs_partition_type);
/// Retrieves the entry count from a hash FS partition.
bool gamecardGetEntryCountFromHashFileSystemPartition(u8 hfs_partition_type, u32 *out_count);
/// Retrieves info from a hash FS partition entry using an entry index.
/// 'out_offset', 'out_size' or 'out_name' may be set to NULL, but at least one of them must be a valid pointer.
/// If 'out_name' != NULL and the function call succeeds, a pointer to a heap allocated buffer is returned.
bool gamecardGetEntryInfoFromHashFileSystemPartitionByIndex(u8 hfs_partition_type, u32 idx, u64 *out_offset, u64 *out_size, char **out_name);
/// Retrieves info from a hash FS partition entry using an entry name.
/// 'out_offset' or 'out_size' may be set to NULL, but at least one of them must be a valid pointer.
bool gamecardGetEntryInfoFromHashFileSystemPartitionByName(u8 hfs_partition_type, const char *name, u64 *out_offset, u64 *out_size);
#endif /* __GAMECARD_H__ */