/* * gamecard.h * * Copyright (c) 2020-2021, DarkMatterCore . * * 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 . */ #pragma once #ifndef __GAMECARD_H__ #define __GAMECARD_H__ #include "fs_ext.h" #include "hfs.h" #ifdef __cplusplus extern "C" { #endif #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 SYSTEM_UPDATE_TID #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; NXDT_ASSERT(GameCardKeySource, 0x10); /// 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; NXDT_ASSERT(GameCardInitialData, 0x200); /// 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; NXDT_ASSERT(GameCardTitleKey, 0xD00); /// 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; NXDT_ASSERT(GameCardTitleKeyEncryption, 0x100); /// 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; NXDT_ASSERT(GameCardKeyArea, 0x1000); typedef enum { GameCardKekIndex_Version0 = 0, GameCardKekIndex_VersionForDev = 1 } GameCardKekIndex; typedef struct { u8 kek_index : 4; ///< GameCardKekIndex. u8 titlekey_dec_index : 4; } GameCardKeyIndex; NXDT_ASSERT(GameCardKeyIndex, 0x1); 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_ForProd = BIT(0), GameCardFwVersion_ForProdSince400NUP = BIT(1), ///< cup_version >= 268435456 (4.0.0-0.0) in GameCardHeaderEncryptedArea. GameCardFwVersion_ForProdSince1100NUP = BIT(2) ///< cup_version >= 738197504 (11.0.0-0.0) 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; /// 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. VersionType2 fw_mode; VersionType1 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; NXDT_ASSERT(GameCardHeaderEncryptedArea, 0x70); /// Placed after the `GameCardKeyArea` section. typedef struct { u8 signature[0x100]; ///< RSA-2048-PSS with SHA-256 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; NXDT_ASSERT(GameCardHeader, 0x200); 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, 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 a user-mode 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 raw data from the inserted gamecard. Supports unaligned reads. /// 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); /// Fills the provided GameCardKeyArea pointer. Only GameCardInitialData data is retrieved at this moment. /// This area can't be read using gamecardReadStorage(). bool gamecardGetKeyArea(GameCardKeyArea *out); /// Fills the provided GameCardHeader pointer. /// This area can also be read using gamecardReadStorage(), starting at offset 0. bool gamecardGetHeader(GameCardHeader *out); /// Fills the provided FsGameCardCertificate pointer. /// This area can also be read using gamecardReadStorage(), starting at GAMECARD_CERTIFICATE_OFFSET. bool gamecardGetCertificate(FsGameCardCertificate *out); /// Fills the provided u64 pointer with the total gamecard size, which is the size taken by both Normal and Secure storage areas. bool gamecardGetTotalSize(u64 *out); /// Fills the provided u64 pointer with the trimmed gamecard size, which is the same as the size returned by gamecardGetTotalSize() but using the trimmed Secure storage area size. bool gamecardGetTrimmedSize(u64 *out); /// Fills the provided u64 pointer with the gamecard ROM capacity, based on the GameCardRomSize value from the header. Not the same as gamecardGetTotalSize(). bool gamecardGetRomCapacity(u64 *out); /// Fills the provided VersionType1 pointer with the bundled firmware update version in the inserted gamecard. bool gamecardGetBundledFirmwareUpdateVersion(VersionType1 *out); /// Fills the provided HashFileSystemContext pointer using information from the requested Hash FS partition. /// Hash FS functions can be used on the retrieved HashFileSystemContext. hfsFreeContext() must be used to free the underlying data from the filled context. bool gamecardGetHashFileSystemContext(u8 hfs_partition_type, HashFileSystemContext *out); /// One-shot function to retrieve meaningful information from a Hash FS entry by name without using gamecardGetHashFileSystemContext() + Hash FS functions. /// 'out_offset' or 'out_size' may be set to NULL, but at least one of them must be a valid pointer. The returned offset is always relative to the start of the gamecard image. /// If you need to get entry information by index, just retrieve the Hash FS context for the target partition and use Hash FS functions on it. bool gamecardGetHashFileSystemEntryInfoByName(u8 hfs_partition_type, const char *entry_name, u64 *out_offset, u64 *out_size); #ifdef __cplusplus } #endif #endif /* __GAMECARD_H__ */