IdStorage: Difference between revisions
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== 0x103 == | == 0x103 == | ||
Console-unique. Motherboard revision in the format of [[KBL_Param#Hardware_Info Hardware | Console-unique. Motherboard revision in the format of [[KBL_Param#Hardware_Info|Hardware Info]]. | ||
== 0x104 == | == 0x104 == |
Revision as of 20:59, 21 December 2023
See also [1].
Description
Region of the PSVita eMMC where perconsole info is stored.
Location
Idstorage data is stored at first raw partition (code 0x1). Use [2] to extract.
Structure
The IdStorage partition is divided in two parts: the mapping table and the leaves.
Mapping table
The mapping table is located at the start of the partition. It's an array of 16-bit leaf IDs that serves as a leaf ID->index mapping table. The mapping table must be at least one-sector wide but may be bigger.
There are two leaf IDs reserved for usage in the mapping table: all entries corresponding to the mapping table (i.e. the first M
entries for an M sectors sized table) must hold the value 0xFFF5
, and all unallocated leaves hold the value 0xFFFF
.
To lookup a leaf index based on its ID, use the following algorithm:
#define M /* implementation defined */ #define SECTOR_SIZE (512) #define NUM_TABLE_ITEMS ((M * SECTOR_SIZE) / sizeof(uint16_t)) uint16_t g_mappingTable[NUM_TABLE_ITEMS]; int leafIndexFromId(unsigned id) { if (id >= 0xFFF0) return /* ERROR: invalid leaf ID */; for (int i = 0; i < NUM_TABLE_ITEMS; i++) { if (g_mappingTable[i] == id) return i; } return /* ERROR: leaf ID is not in mapping table */; }
Leaves
Leaves are sector-sized (512 bytes) areas in the IdStorage partition used to store arbitrary data. While the data stored may be smaller, a leaf always occupies one sector in the partition.
To read a leaf's data, obtain the leaf index (this can be known directly, or obtained from a leaf ID using the previously mentioned algorithm) then read 512 bytes starting at offset 512 * leafIndex
in the IdStorage partition.
Limits
The number of leaves that can be stored in an IdStorage partition is limited by three factors: the size of the partition, the size of the mapping table and the size of leaf IDs.
- An
M
sectors wide mapping table can hold up to255 * M
leaves- This is because a single-sector mapping table can reference
SECTOR_SIZE/sizeof(u16) - 1 = 255
leaves (the- 1
is needed because a table consumes one entry for itself)
- This is because a single-sector mapping table can reference
- A
P
sectors wide partition can hold up toP - M
leaves- This is because leaves are sector-sized, and the mapping table consumes
M
sectors
- This is because leaves are sector-sized, and the mapping table consumes
- There are 65520 leaf IDs available
- While an unsigned 16-bit variable can hold 65536 values, IDs superior or equal to 0xFFF0 are reserved and cannot be used
From this, we can conclude that an IdStorage partition of P
sectors with an M
sectors mapping table can hold up to min(255*M, P-M, 65520)
leaves. We can also deduce an IdStorage partition is optimally shaped (no space is non-allocatable) when P = 256 * M
.
On Vita, the IdStorage partition is 512KiB and 32 sectors are reserved for the indexing table (P = 1024, M = 32
, a non-optimal choice), which means the console's partition can hold up to 992 IdStorage leaves.
Leaf content
Leaves not present in this section have not been found in any unit.
In the following section, "empty" means that the area has all bits set to 1 (i.e., 0xFF). "Present"/"Not present" means whether or not a leaf exists in IdStorage.
When a size is indicated, this means only the first X bytes of the leaf are used, and the rest is empty.
The following information may not be valid for pre-production units.
0x000~0x007
SceIdStoragePspCertificates
Identical across all units and duplicated in leaves 0x020 to 0x027.
0x040~0x047
SceIdStoragePsp2Certificates.
Console-unique.
0x048~0x04F
Console-unique. May be certificate(s).
0x07E
Console-unique.
0x80
Service / Manufacturing Information (SMI)
Console-unique. Contains minimal firmware version (checked in second_loader
).
struct SMILeaf { uint8_t magic[4]; //'SMI\0' uint32_t version; //1 uint32_t min_fwv; //Minimal firmware version uint8_t unused[0x80 - 0xC]; //Encrypted with per-console keys. //This is used to verify the leaf has not been modified. uint8_t encrypted_data[0x200 - 0x80]; };
0x100
Console-unique. Build data strings. One string starts at offset 0, and one string starts at offset 0x100. Both strings are 0x100 characters long.
In a 0.920 minfw unit, this leaf instead contains 0x0 at offset 0, 0x10 at offset 0x10, etc up to offset 0xF0, while all other bytes are zeroes.
0x102
Console-unique. Per-console factory/service product information.
0x103
Console-unique. Motherboard revision in the format of Hardware Info.
0x104
Console-unique. Diagnostic results.
Not present if diagnostic software has not been executed on the unit.
0x110
WlanRegion (3 bytes)
The following algorithm is used to derive it from PsCode:
byte WlanRegion[3]; switch(pscode.product_code) { case 0x100: case 0x101: case 0x102: case 0x104: case 0x10B: case 0x10F: case 0x110: case 0x111: WlanRegion[2] = 0; WlanRegion[1] = 7; break; case 0x103: case 0x106: case 0x108: case 0x10A: case 0x10D: case 0x10E: WlanRegion[2] = 0; WlanRegion[1] = 0x1F; break; case 0x105: case 0x107: case 0x109: case 0x10C: WlanRegion[2] = 1; WlanRegion[1] = 0x1F; break; default: goto error; } WlanRegion[0] = 0xFF;
0x111
WlanMacAddress (6 bytes)
Console-unique. The MAC address of the Wireless LAN adapter.
0x112
MtpSerial (wchar_t[0x20]
)
Console-unique. The serial number sent via the MTP protocol.
0x113
Console-unique. Information related to the 3G modem.
Empty on non-3G models.
0x114
Physical device location
Four of:
struct DeviceLocation { uint32_t type; int32_t x; int32_t y; int32_t z; };
Where type: 0x00 - Front camera, 0x01 - Back camera, 0x10 - Accelerometer, 0x11 - Gyro
Cameras are at offsets 0x00 and 0x10, Motion at 0x20 and 0x30
There's unknown int32 flag at 0x100
Identical for all consoles of a generation (one kind for Fat, one kind for Slim).
Empty on PSTV.
0x115
ProductTypeInfo (char[16]
)
Identical for consoles of the same "type".
Example values:
PDEL100000010000
(PDEL-1000)PCH01004ZAZ20000
(PCH-1004 - Call of Duty: Black Ops Declassified limited edition)PCH01100AA010002
(Crystal Black PCH-1100 - docomo carrier)PCH02000ZA120000
(White PCH-2000)
Decomposition: FFFF NNNN ZZ Y X xxx O
FFFF
andNNNN
= Model code (e.g. PDEL-1000) decomposed in two partsFFFF
= family (e.g., PCH, PDEL)NNNN
= number (e.g., 1000, 1004, 1100)
ZZ
= ? (known values: 00, ZA, AA)Y
= ? (known values: 0, 1, Z)X
= ? (known values: 1, 2)xxx
= ? (always 000)O
= Product target operator (carrier ID for 3G models - usually matches offset 0x88 of leaf 0x113 on SIM-locked models)
0x116
ColorVariation (4 bytes)
Not present on all units.
Used for wave color by SceShell. (Patch example)
struct ColorVariation { uint8_t unk0; uint16_t unk1; uint8_t unk3; /* rest of the leaf is empty */ };
Example values:
- Call of Duty: Black Ops Declassified limited edition PCH-1004:
{ 0x01, 0x0000, 0x00 }
- Glacier White PCH-2000
{ 0x01, 0x000C, 0x00 }
0x117
TemperatureThreashold[sic] (4 elements of 1 byte each)
Not present on all units, and always all zeroes when present.
0x118
AudioParam (1 byte)
Not present on all units.
If set to 0 (or the leaf is absent?), AVLS is never forcefully enabled.
0x119
EtherMacAddress (6 bytes)
Console-unique. The MAC address of the Ethernet adapter.
Present on PSTV and PCH-2000 (where it is empty).
0x11A
WebBrowserParam (1 byte)
Can be 0/1/2/0x11?
Seen: 0x02 on PCH200X, 0x11 on PSTV
0x11B
ShutterParam (1 byte)
Seen: 0x01 on PCH200X, 0x00 on PSTV. Maybe used to disable the shutter sound?
0x11C
LedInfoParam (1 byte)
Seen 0x01 on PCH200X, 0x00 on PSTV
Zeroed leaves
The following leaves are present in IdStorage, but seem to always contain zeroes:
- 0x008~0x01F
- 0x028~0x03F
- 0x050~0x07D
- 0x7F