Flash Filesystem: Difference between revisions
AuroraWright (talk | contribs) No edit summary |
mNo edit summary |
||
| (2 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
The Nintendo 3DS has | The Nintendo 3DS has several differently sized NAND flash chips. Due to the NCSD header, the actual used size of the Old3DS NAND is 0x3AF00000-bytes(943MiB). On New3DS, the actual NAND size and the total size used by the partitions, is 0x4D800000-bytes(1240MiB). | ||
===Physical Size=== | |||
{| class="wikitable" border="1" | |||
! Device | |||
! Manufacturer | |||
! Size | |||
|- | |||
| 2DS | |||
| Toshiba | |||
| 0x3AF00000 | |||
|- | |||
| 2DS | |||
| Toshiba | |||
| 0x76000000 | |||
|- | |||
| 2DS | |||
| Samsung | |||
| 0x3BA00000 | |||
|- | |||
| 2DS | |||
| Samsung | |||
| 0x4D800000 | |||
|- | |||
| Old3DS | |||
| Toshiba | |||
| 0x3AF00000 | |||
|- | |||
| Old3DS | |||
| Samsung | |||
| 0x3BA00000 | |||
|- | |||
| New3DS | |||
| Toshiba | |||
| 0x76000000 | |||
|- | |||
| New3DS | |||
| Samsung | |||
| 0x4D800000 | |||
|- | |||
| New3DS | |||
| Samsung | |||
| 0x74800000 | |||
|} | |||
===Format=== | ===Format=== | ||
| Line 12: | Line 55: | ||
===Encryption=== | ===Encryption=== | ||
The NAND file system is encrypted using [[AES|AES-CTR]]. The TWL regions of NAND use the TWL NAND [[AES|keyslot]], while the CTR regions use the CTR NAND [[AES|keyslots]]. The keyslot used for each partition is determined by the NCSD partition FS type and encryption type. The TWL/CTR NAND regions are specified by the NCSD header. The first 0x0B100000 bytes of NAND is encrypted with the TWL keyslot, however before 0x00012E00 only the MBR partition table is encrypted with the TWL keyslot. That region contains the TWL partitions listed below. | The NAND file system is encrypted using [[AES|AES-CTR]]. The TWL regions of NAND use the TWL NAND [[AES|keyslot]], while the nonce is the sha1 hash of the NAND CID, byte reversed. The CTR regions use the CTR NAND [[AES|keyslots]], while the nonce is the sha256 hash of the NAND CID. The keyslot used for each partition is determined by the NCSD partition FS type and encryption type. The TWL/CTR NAND regions are specified by the NCSD header. The first 0x0B100000 bytes of NAND is encrypted with the TWL keyslot, however before 0x00012E00 only the MBR partition table is encrypted with the TWL keyslot. That region contains the TWL partitions listed below. | ||
The New3DS CTRNAND partition uses a [[AES|keyslot]] separate from the Old3DS one. | The New3DS CTRNAND partition uses a [[AES|keyslot]] separate from the Old3DS one. | ||
| Line 32: | Line 75: | ||
! Description | ! Description | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| | | | ||
| 0x0 | | 0x0 | ||
| Line 43: | Line 86: | ||
| [[NCSD]] header, this contains the offsets/sizes of the below CTR-NAND partitions. This block also contains the TWL-NAND MBR partition table. | | [[NCSD]] header, this contains the offsets/sizes of the below CTR-NAND partitions. This block also contains the TWL-NAND MBR partition table. | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| | | | ||
| 0x00000000 | | 0x00000000 | ||
| Line 54: | Line 97: | ||
| TWL NAND region | | TWL NAND region | ||
|- | |- | ||
| style="background: | | style="background: #ffccbb" | No | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| | | | ||
| 0x00012C00 | | 0x00012C00 | ||
| Line 65: | Line 108: | ||
| Console-unique encrypted New3DS key-storage, see below. | | Console-unique encrypted New3DS key-storage, see below. | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| twln | | twln | ||
| 0x00012E00 | | 0x00012E00 | ||
| Line 76: | Line 119: | ||
| TWL-NAND FAT16 File System. (DSi) | | TWL-NAND FAT16 File System. (DSi) | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| twlp | | twlp | ||
| 0x09011A00 | | 0x09011A00 | ||
| Line 87: | Line 130: | ||
| TWL-NAND PHOTO FAT12 File System. (DSi) | | TWL-NAND PHOTO FAT12 File System. (DSi) | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| | | | ||
| 0x0B100000 | | 0x0B100000 | ||
| Line 98: | Line 141: | ||
| By default this partition is empty(only contains 0x00/0xFF bytes since it was never written to), when AGB_FIRM was never launched. This contains the AGB_FIRM GBA savegame. | | By default this partition is empty(only contains 0x00/0xFF bytes since it was never written to), when AGB_FIRM was never launched. This contains the AGB_FIRM GBA savegame. | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| firm0 | | firm0 | ||
| 0x0B130000 | | 0x0B130000 | ||
| Line 109: | Line 152: | ||
| [[FIRM|Firmware]] partition. | | [[FIRM|Firmware]] partition. | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| firm1 | | firm1 | ||
| 0x0B530000 | | 0x0B530000 | ||
| Line 120: | Line 163: | ||
| [[FIRM|Firmware]] partition.(Backup partition, same as above) | | [[FIRM|Firmware]] partition.(Backup partition, same as above) | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ffccbb" | No | ||
| | | | ||
| 0x0B930000 | | 0x0B930000 | ||
| Line 131: | Line 174: | ||
| CTR-NAND partition. (3DS) | | CTR-NAND partition. (3DS) | ||
|- | |- | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| style="background: | | style="background: #ffccbb" | No | ||
| nand | | nand | ||
| 0x0B95CA00 | | 0x0B95CA00 | ||
| Line 142: | Line 185: | ||
| CTR-NAND FAT16 File System. | | CTR-NAND FAT16 File System. | ||
|- | |- | ||
| style="background: | | style="background: #ffccbb" | No | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| | | | ||
| 0x0B930000 | | 0x0B930000 | ||
| Line 153: | Line 196: | ||
| CTR-NAND partition. (New3DS) | | CTR-NAND partition. (New3DS) | ||
|- | |- | ||
| style="background: | | style="background: #ffccbb" | No | ||
| style="background: | | style="background: #ccffbb" | Yes | ||
| nand | | nand | ||
| 0x0B95AE00 | | 0x0B95AE00 | ||