switch2brew

BCT: Difference between revisions

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Created page with "BCT (Boot Configuration Table) is a data structure present on Tegra based devices that supplies boot time configuration parameters. The Switch 2 can use different types of BCTs with the BRBCT (BootROM BCT) being installed into the first bytes of UFS storage's LUN0 and LUN1. = Structure = == BRBCT == {| class="wikitable" border="1" |- ! Offset ! Size ! Description |- | 0x0 | 0x4 | Magic ("BCTB") |- | 0x4 | 0x4..."
 
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Line 17: Line 17:
|  0x4
|  0x4
|  0x40
|  0x40
|  BctSha512Hash (hash over data from 0x44 to 0x2000)
|  BctHash (SHA-512 hash over data from 0x44 to 0x2000)
|-
|-
|  0x44
|  0x44
|  0x180
|  0x180
|  Signatures
|  PublicParams
|-
|-
|  0x1C4
|  0x1C4
|  0x40
|  0x40
|  SignedSectSha512Hash (hash over data from 0x1200 to 0x2000)
|  CryptoHash (SHA-512 hash over data from 0x1200 to 0x2000)
|-
|-
|  0x204
|  0x204
|  0xB10
|  0xB10
|  Pcp
|  CryptoSignature (XMSS-SHA2_20_256 signature)
|-
|-
|  0xD14
|  0xD14
Line 50: Line 50:
!  Size
!  Size
!  Description
!  Description
|-
| style="background: orange" | AAD Section Begin
| style="background: orange" |
| style="background: orange" |
|-
|-
|  0x0
|  0x0
|  0x10
|  0x10
|   
|  Salt1. Random 16 bytes.
|-
|-
|  0x10
|  0x10
Line 60: Line 64:
|-
|-
|  0x14
|  0x14
|  0x14
|  KdfLabel
|-
|  0x28
|  0x4
|  Zeroes
|-
|  0x2C
|  0x0C
|  AesGcmIv
|-
| style="background: orange" | AAD Section End
| style="background: orange" |
| style="background: orange" |
|-
|  0x38
|  0x38
|   
|  0x10
|  AesGcmTag
|-
|-
|  0x48
|  0x48
|  0xC0 (0x10 * 12)
|  0xC0 (0x30 * 4)
|  BlInfo
|  [[#BlInfo|BlInfo]]
|-
|-
|  0x108
|  0x108
|  0x4
|  0x1
|   
|  VerMajor
|-
|  0x109
|  0x1
|  VerMinor
|-
|  0x10A
|  0x1
|  RatchetLevel
|-
|  0x10B
|  0x1
|  RevokePk. Bit0: RevokeH0, Bit1: RevokeH1
|-
|-
|  0x10C
|  0x10C
Line 76: Line 108:
|-
|-
|  0x50C
|  0x50C
|  0x294
|  0x284
|   
|   
|-
|  0x790
|  0x10
|  Salt2. Random 16 bytes.
|-
|-
|  0x7A0
|  0x7A0
Line 84: Line 120:
|-
|-
|  0x7B0
|  0x7B0
|  0x28
|  0x8
|   
|  BrBctBinding
|-
|  0x7B8
|  0x8
|  SbkKdfLabel
|-
|  0x7C0
|  0x8
|  UnknownKdfLabel0
|-
|  0x7C8
|  0x8
|  UnknownKdfLabel1
|-
|  0x7D0
|  0x8
|  FsiKdfLabel
|-
|-
|  0x7D8
|  0x7D8
Line 113: Line 165:
|  0x7F0
|  0x7F0
|  0x4
|  0x4
|  BfBlBits
|  [[#BfBlBits|BfBlBits]]
|-
|-
|  0x7F4
|  0x7F4
|  0x87
|  0x20
|  TzTestKey
|-
|  0x814
|  0x20
|  FskpTestKey
|-
|  0x834
|  0x20
|  PkaTestKey
|-
|  0x854
|  0x24
|   
|   
|-
|  0x878
|  0x01
|  FskpKeyAesType
|-
|  0x879
|  0x01
|  FskpKeyHmacType
|-
|  0x87A
|  0x01
|  PkaTestKeyType
|-
|-
|  0x87B
|  0x87B
Line 136: Line 212:
|-
|-
|  0x8C0
|  0x8C0
|  0x540
|  0x4FC
|   
|   
|-
|  0xDBC
|  0x44
|  Digest
|}
|}


Line 149: Line 229:
|  0x0
|  0x0
|  0x4
|  0x4
|  StartBlock
|  StartBlock0
|-
|-
|  0x4
|  0x4
|  0x4
|  0x4
|  StartPage
|  StartPage0
|-
|-
|  0x8
|  0x8
|  0x4
|  0x4
|  Version
|  Version0
|-
|-
|  0xC
|  0xC
|  0x4
|  0x4
|  Random
|  Random0
|-
|  0x10
|  0x4
|  StartBlock1
|-
|  0x14
|  0x4
|  StartPage1
|-
|  0x18
|  0x4
|  Version1
|-
|  0x1C
|  0x4
|  Random1
|-
|  0x20
|  0x4
|  StartBlock2
|-
|  0x24
|  0x4
|  StartPage2
|-
|  0x28
|  0x4
|  Version2
|-
|  0x2C
|  0x4
|  Random2
|}
 
==== BfBlBits ====
{| class="wikitable" border="1"
!  Bits
!  Description
|-
| 0
| GpioSelectBootChain
|-
| 1
| Mb1DebugProduction
|-
| 2
| Sc7RfDebugProduction
|-
| 3
| PscBlDebugProduction
|-
| 4
| PscRfDebugProduction
|-
| 5
| PscFwDebugProduction
|-
| 6
| BpmpDebugProduction
|-
| 7
| BpmpIstDebugProduction
|-
| 8
| MceDebugProduction
|-
| 9
| IstCcplexDebugProduction
|-
| 10
| IstFwDebugProduction
|-
| 11
| RtcRailViolationDetect
|-
| 12
| CustNvCcplexDfdEn
|-
| 13
| DebugWithTestKeys
|-
| 14
| DebugWithTestKeysDuringPscDebug
|-
| 15
| DisableBootromClockBoost
|-
| 16
| DisablePscromClkBoost
|-
| 17
| EnableScpmReset
|-
| 18
| SkipOemAuthDiagBoot
|-
| 19
| DiagBoot
|-
| 20
| BpmpDiagBoot
|-
| 21
| L0Ist
|-
| 22
| L1Ist
|-
| 23-31
|
|}
|}
Retrieved from "https://switch2brew.org/wiki/BCT"