Difference between revisions of "Flash Filesystem"

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(u64 could also reflect bcpkg size? - this was observed to be larger after 3.0->3.0exfat update)
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|  Unknown, 0x20-bytes hash + one u64? All zero on 1.0.
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|  Unknown, 0x20-bytes hash (updated when bcpkg-2-1 updates) + one u64? (may be incremented on bcpkg update) All zero on 1.0.
 
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Revision as of 19:04, 6 July 2017

NAND structure

Boot Partitions

Boot Partition 0 (0 of 1)

Offset Size Description
0x000000 Title 0100000000000819 BCT
0x004000 Title 010000000000081A BCT
0x008000 Title 0100000000000819 BCT
0x00C000 Title 010000000000081A BCT
0x100000 Title 0100000000000819 "package1"
0x140000 Title 0100000000000819 "package1" (Backup)
0x180000 Keyblob area, the first 0xB0 is identical to the console-unique "customer data" section in BCTs
0x184000 Unknown, 0x20-bytes hash (updated when bcpkg-2-1 updates) + one u64? (may be incremented on bcpkg update) All zero on 1.0.

Boot Partition 1 (1 of 1)

Offset Size Description
0x000000 Title 010000000000081A "package1"
0x040000 Title 010000000000081A "package1" (Backup)

User Partitions

Partition name Offset Size Bis Partition ID Description
N/A 0x0 20 GPT header, Bis-storage also allows raw access to the entire NAND eMMC sectors starting at sector0.
PRODINFO 0x00004400 0x003FBC00 27 "CAL0" raw partition containing set:cal data.
PRODINFOF 0x00400000 0x00400000 28 FAT12 filesystem, additional calibration.
BCPKG2-1-Normal-Main 0x00800000 0x00800000 21 For all these packages, data starts at offset 0x4000 and is not console-unique. This is installed from "package2" in firmware package A (0100000000000819) by default. With the exFAT update installed, this is switched to firmware package C (010000000000081B).
BCPKG2-2-Normal-Sub 0x01000000 0x00800000 22 Identical to BCPKG2-1-Normal-Main, probably used as a backup partition.
BCPKG2-3-SafeMode-Main 0x01800000 0x00800000 23 This is installed from "package2" in firmware package B (010000000000081A).
BCPKG2-4-SafeMode-Sub 0x02000000 0x00800000 24 Identical to BCPKG2-3-SafeMode-Main.
BCPKG2-5-Repair-Main 0x02800000 0x00800000 25 Installed at the factory.
BCPKG2-6-Repair-Sub 0x03000000 0x00800000 26 Identical to BCPKG2-5-Repair-Main.
SAFE 0x03800000 0x04000000 29 FAT32 filesystem.
SYSTEM 0x07800000 0xA0000000 31 (and 32?) FAT32 filesystem.
USER 0xA7800000 0x680000000 30 FAT32 filesystem.
0x747BFFE00 0x200 This is the backup GPT header specified by the main GPT header. This is also the last sector readable with Bis-storage paritionID 20.

If the client process lacks the relevant permission for any of the above partition IDs, error 0x2EE202 is returned.

NCAs stored in NAND are raw, identical to the data readable with Content_Manager_services#ReadEntryRaw.

The filenames for saveimages is just "<lower-case hex u64 saveID>". saveIDs aren't related to the titleID, or at least not for USER-partition saves. The high u32 of the saveID is normally either 0x00000000 or 0x80000000.

PRODINFOF

PRODINFOF
├── Certifications
│   └── WirelessCertification.png
└── ptd
    ├── DeviceIdWithEmsBit.dat
    ├── Ecid.dat
    ├── prodCode.dat
    └── log
        ├── Process_asm1.log
        ├── Process_board1.log
        ├── TestFlagLine.log
        ├── TestFlagQc.log
        ├── AGING
        │   └── Sequence.log
        ├── BOARD_TEST
        │   └── Sequence.log
        ├── BOARD_WIRELESS
        │   └── Sequence.log
        ├── FINAL_CHECK
        │   └── Sequence.log
        ├── LCD_AND_KEY
        │   └── Sequence.log
        └── USB_AND_HP
            └── Sequence.log

DeviceIdWithEmsBit.dat

Contains a 0x10-byte uppercase hex string, identical to the DeviceId in the DeviceCert.

SYSTEM

SYSTEM
├── PRF2SAFE.RCV
├── Contents
│   ├── registered
│   │   └── ... NCA
│   └── placehld
│       └── ... NCA
├── save
│   └── ...
└── saveMeta
    └── ... (empty?)

The saves stored under this partition are only for system-titles / etc.

USER

USER
├── PRF2SAFE.RCV
├── Album (Same layout as SD)
├── Contents
│   ├── registered
│   │   └── ... NCA
│   └── placehld
│       └── ... NCA
├── save
│   └── ...
└── saveMeta
    └── ... 

The saves for all non-system applications, regardless of where the application is located(storageID), is stored here. Each user account which has savedata has a separate saveimage. Save-common for an application is presumably a separate saveimage too. Every saveimage here is only for applications.

SAFE

SAFE
├── PRF2SAFE.RCV
├── Contents
│   ├── registered
│   │   └── ... NCA (nothing installed?)
│   └── placehld
│       └── ... NCA
└── save
    ├── 8000000000000000
    └── 8000000000000120

On a v2.1 system with MountBis, the only thing under here is "PRF2SAFE.RCV".