263 lines
12 KiB
C
263 lines
12 KiB
C
/*
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* gamecard.h
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*
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* Copyright (c) 2020-2021, DarkMatterCore <pabloacurielz@gmail.com>.
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*
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* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
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*
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* nxdumptool is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nxdumptool is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for 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 <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#ifndef __GAMECARD_H__
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#define __GAMECARD_H__
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#include "fs_ext.h"
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#include "hfs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define GAMECARD_HEAD_MAGIC 0x48454144 /* "HEAD". */
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#define GAMECARD_MEDIA_UNIT_SIZE 0x200
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#define GAMECARD_MEDIA_UNIT_OFFSET(x) ((u64)(x) * GAMECARD_MEDIA_UNIT_SIZE)
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#define GAMECARD_UPDATE_TID SYSTEM_UPDATE_TID
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#define GAMECARD_CERTIFICATE_OFFSET 0x7000
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/// Encrypted using AES-128-ECB with the common titlekek generator key (stored in the .rodata segment from the Lotus firmware).
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typedef struct {
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u64 package_id; ///< Matches package_id from GameCardHeader.
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u8 reserved[0x8]; ///< Just zeroes.
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} GameCardKeySource;
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NXDT_ASSERT(GameCardKeySource, 0x10);
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/// Plaintext area. Dumped from FS program memory.
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typedef struct {
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GameCardKeySource key_source;
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u8 encrypted_titlekey[0x10]; ///< Encrypted using AES-128-CCM with the decrypted key_source and the nonce from this section.
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u8 mac[0x10]; ///< Used to verify the validity of the decrypted titlekey.
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u8 nonce[0xC]; ///< Used as the IV to decrypt encrypted_titlekey using AES-128-CCM.
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u8 reserved[0x1C4];
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} GameCardInitialData;
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NXDT_ASSERT(GameCardInitialData, 0x200);
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/// Encrypted using AES-128-CTR with the key and IV/counter from the `GameCardTitleKeyEncryption` section. Assumed to be all zeroes in retail gamecards.
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typedef struct {
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u8 titlekey[0x10]; ///< Decrypted titlekey from the `GameCardInitialData` section.
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u8 reserved[0xCF0];
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} GameCardTitleKey;
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NXDT_ASSERT(GameCardTitleKey, 0xD00);
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/// Encrypted using RSA-2048-OAEP and a private OAEP key from AuthoringTool. Assumed to be all zeroes in retail gamecards.
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typedef struct {
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u8 titlekey_encryption_key[0x10]; ///< Used as the AES-128-CTR key for the `GameCardTitleKey` section. Randomly generated during XCI creation by AuthoringTool.
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u8 titlekey_encryption_iv[0x10]; ///< Used as the AES-128-CTR IV/counter for the `GameCardTitleKey` section. Randomly generated during XCI creation by AuthoringTool.
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u8 reserved[0xE0];
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} GameCardTitleKeyEncryption;
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NXDT_ASSERT(GameCardTitleKeyEncryption, 0x100);
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/// Used to secure communications between the Lotus and the inserted gamecard.
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/// Precedes the gamecard header.
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typedef struct {
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GameCardInitialData initial_data;
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GameCardTitleKey titlekey_block;
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GameCardTitleKeyEncryption titlekey_encryption;
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} GameCardKeyArea;
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NXDT_ASSERT(GameCardKeyArea, 0x1000);
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typedef enum {
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GameCardKekIndex_Version0 = 0,
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GameCardKekIndex_VersionForDev = 1
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} GameCardKekIndex;
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typedef struct {
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u8 kek_index : 4; ///< GameCardKekIndex.
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u8 titlekey_dec_index : 4;
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} GameCardKeyIndex;
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NXDT_ASSERT(GameCardKeyIndex, 0x1);
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typedef enum {
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GameCardRomSize_1GiB = 0xFA,
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GameCardRomSize_2GiB = 0xF8,
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GameCardRomSize_4GiB = 0xF0,
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GameCardRomSize_8GiB = 0xE0,
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GameCardRomSize_16GiB = 0xE1,
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GameCardRomSize_32GiB = 0xE2
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} GameCardRomSize;
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typedef enum {
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GameCardFlags_AutoBoot = BIT(0),
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GameCardFlags_HistoryErase = BIT(1),
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GameCardFlags_RepairTool = BIT(2),
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GameCardFlags_DifferentRegionCupToTerraDevice = BIT(3),
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GameCardFlags_DifferentRegionCupToGlobalDevice = BIT(4)
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} GameCardFlags;
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typedef enum {
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GameCardSelSec_ForT1 = 1,
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GameCardSelSec_ForT2 = 2
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} GameCardSelSec;
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typedef enum {
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GameCardFwVersion_ForDev = 0,
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GameCardFwVersion_ForProd = BIT(0),
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GameCardFwVersion_ForProdSince400NUP = BIT(1), ///< cup_version >= 268435456 (4.0.0-0.0) in GameCardHeaderEncryptedArea.
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GameCardFwVersion_ForProdSince1100NUP = BIT(2) ///< cup_version >= 738197504 (11.0.0-0.0) in GameCardHeaderEncryptedArea.
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} GameCardFwVersion;
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typedef enum {
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GameCardAccCtrl1_25MHz = 0xA10011,
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GameCardAccCtrl1_50MHz = 0xA10010 ///< GameCardRomSize_8GiB or greater.
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} GameCardAccCtrl1;
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typedef enum {
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GameCardCompatibilityType_Normal = 0,
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GameCardCompatibilityType_Terra = 1
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} GameCardCompatibilityType;
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/// 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`.
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/// Key hashes for documentation purposes:
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/// Production XCI header key hash: 2E36CC55157A351090A73E7AE77CF581F69B0B6E48FB066C984879A6ED7D2E96
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/// Development XCI header key hash: 61D5C02244188810E2E3DE69341AC0F3C7653D370C6D3F77CA82B0B7E59F39AD
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typedef struct {
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u64 fw_version; ///< GameCardFwVersion.
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u32 acc_ctrl_1; ///< GameCardAccCtrl1.
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u32 wait_1_time_read; ///< Always 0x1388.
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u32 wait_2_time_read; ///< Always 0.
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u32 wait_1_time_write; ///< Always 0.
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u32 wait_2_time_write; ///< Always 0.
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VersionType2 fw_mode;
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VersionType1 cup_version;
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u8 compatibility_type; ///< GameCardCompatibilityType.
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u8 reserved_1[0x3];
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u64 cup_hash;
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u64 cup_id; ///< Must match GAMECARD_UPDATE_TID.
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u8 reserved_2[0x38];
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} GameCardHeaderEncryptedArea;
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NXDT_ASSERT(GameCardHeaderEncryptedArea, 0x70);
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/// Placed after the `GameCardKeyArea` section.
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typedef struct {
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u8 signature[0x100]; ///< RSA-2048-PSS with SHA-256 signature over the rest of the header.
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u32 magic; ///< "HEAD".
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u32 secure_area_start_address; ///< Expressed in GAMECARD_MEDIA_UNIT_SIZE blocks.
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u32 backup_area_start_address; ///< Always 0xFFFFFFFF.
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GameCardKeyIndex key_index;
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u8 rom_size; ///< GameCardRomSize.
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u8 header_version; ///< Always 0.
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u8 flags; ///< GameCardFlags.
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u64 package_id;
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u32 valid_data_end_address; ///< Expressed in GAMECARD_MEDIA_UNIT_SIZE blocks.
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u8 reserved[0x4];
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u8 iv[0x10];
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u64 partition_fs_header_address; ///< Root HFS0 header offset.
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u64 partition_fs_header_size; ///< Root HFS0 header size.
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u8 partition_fs_header_hash[SHA256_HASH_SIZE];
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u8 initial_data_hash[SHA256_HASH_SIZE];
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u32 sel_sec; ///< GameCardSelSec.
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u32 sel_t1_key; ///< Always 2.
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u32 sel_key; ///> Always 0.
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u32 normal_area_end_address; ///< Expressed in GAMECARD_MEDIA_UNIT_SIZE blocks.
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GameCardHeaderEncryptedArea encrypted_area;
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} GameCardHeader;
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NXDT_ASSERT(GameCardHeader, 0x200);
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typedef enum {
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GameCardStatus_NotInserted = 0,
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GameCardStatus_InsertedAndInfoNotLoaded = 1, ///< Most likely related to the "nogc" patch being enabled. Means nothing at all can be done with the inserted gamecard.
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GameCardStatus_InsertedAndInfoLoaded = 2
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} GameCardStatus;
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typedef enum {
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GameCardHashFileSystemPartitionType_Root = 0,
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GameCardHashFileSystemPartitionType_Update = 1,
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GameCardHashFileSystemPartitionType_Logo = 2, ///< Only available in GameCardFwVersion_Since400NUP gamecards.
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GameCardHashFileSystemPartitionType_Normal = 3,
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GameCardHashFileSystemPartitionType_Secure = 4,
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GameCardHashFileSystemPartitionType_Boot = 5,
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GameCardHashFileSystemPartitionType_Count = 6 ///< Not a real value.
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} GameCardHashFileSystemPartitionType;
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/// Initializes data needed to access raw gamecard storage areas.
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/// Also spans a background thread to automatically detect gamecard status changes and to cache data from the inserted gamecard.
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bool gamecardInitialize(void);
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/// Deinitializes data generated by gamecardInitialize().
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/// This includes destroying the background gamecard detection thread and freeing all cached gamecard data.
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void gamecardExit(void);
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/// Returns a user-mode gamecard status change event that can be used to wait for status changes on other threads.
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/// If the gamecard interface hasn't been initialized, this returns NULL.
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UEvent *gamecardGetStatusChangeUserEvent(void);
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/// Returns the current GameCardStatus value.
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u8 gamecardGetStatus(void);
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/// Used to read raw data from the inserted gamecard. Supports unaligned reads.
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/// All required handles, changes between normal <-> secure storage areas and proper offset calculations are managed internally.
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/// 'offset' + 'read_size' must not exceed the value returned by gamecardGetTotalSize().
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bool gamecardReadStorage(void *out, u64 read_size, u64 offset);
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/// Fills the provided GameCardKeyArea pointer. Only GameCardInitialData data is retrieved at this moment.
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/// This area can't be read using gamecardReadStorage().
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bool gamecardGetKeyArea(GameCardKeyArea *out);
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/// Fills the provided GameCardHeader pointer.
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/// This area can also be read using gamecardReadStorage(), starting at offset 0.
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bool gamecardGetHeader(GameCardHeader *out);
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/// Fills the provided FsGameCardCertificate pointer.
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/// This area can also be read using gamecardReadStorage(), starting at GAMECARD_CERTIFICATE_OFFSET.
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bool gamecardGetCertificate(FsGameCardCertificate *out);
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/// Fills the provided u64 pointer with the total gamecard size, which is the size taken by both Normal and Secure storage areas.
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bool gamecardGetTotalSize(u64 *out);
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/// 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.
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bool gamecardGetTrimmedSize(u64 *out);
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/// Fills the provided u64 pointer with the gamecard ROM capacity, based on the GameCardRomSize value from the header. Not the same as gamecardGetTotalSize().
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bool gamecardGetRomCapacity(u64 *out);
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/// Fills the provided VersionType1 pointer with the bundled firmware update version in the inserted gamecard.
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bool gamecardGetBundledFirmwareUpdateVersion(VersionType1 *out);
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/// Fills the provided HashFileSystemContext pointer using information from the requested Hash FS partition.
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/// Hash FS functions can be used on the retrieved HashFileSystemContext. hfsFreeContext() must be used to free the underlying data from the filled context.
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bool gamecardGetHashFileSystemContext(u8 hfs_partition_type, HashFileSystemContext *out);
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/// One-shot function to retrieve meaningful information from a Hash FS entry by name without using gamecardGetHashFileSystemContext() + Hash FS functions.
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/// '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.
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/// 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.
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bool gamecardGetHashFileSystemEntryInfoByName(u8 hfs_partition_type, const char *entry_name, u64 *out_offset, u64 *out_size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __GAMECARD_H__ */
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