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Line 1,287:
Line 1,287: + Line 1,330:
Line 1,331: − + − + − + − + − + − + − + − + − + − + − + − + − | Time spent reading the BCT.+ − + − + − + − + − + + + + + + + + Line 1,424:
Line 1,432: − + Line 1,540:
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Line 1,570: − + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
no edit summary
During boot, the BootROM saves the BCT in IRAM at address 0x40000100. The preceding 0x100 bytes (IRAM memory range from 0x40000000 to 0x40000100) contain a structure called BIT (Boot Info Table) which encapsulates the BCT in IRAM and is initialized by the BootROM as follows:
During boot, the BootROM saves the BCT in IRAM at address 0x40000100. The preceding 0x100 bytes (IRAM memory range from 0x40000000 to 0x40000100) contain a structure called BIT (Boot Info Table) which encapsulates the BCT in IRAM and is initialized by the BootROM as follows:
=== Erista ===
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
|-
|-
| 0x18
| 0x18
| 0x04
| 0x04*0x04
| BootTimeLogInit
| BootTimeLog
| Value from TIMERUS_CNTR_1US when the BootROM enters its main function.
|
|-
{| class="wikitable" border="1"
| 0x1C
|-
| 0x04
! Offset
| BootTimeLogExit
! Size
| This is the value that gets written into SB_CSR before nvboot. (0x10)
! Field
|-
|-
| 0x20
| 0x00
| 0x04
| 0x04
| BootReadBctTickCnt
| BootTimeLogInit
|-
|-
| 0x04
| 0x24
| 0x04
| 0x04
| BootTimeLogExit
| BootReadBLTickCnt
|-
| Time spent parsing the bootloader info from the BCT.
| 0x08
| 0x04
| BootReadBctTickCnt
|-
| 0x0C
| 0x04
| BootReadBLTickCnt
|}
|-
|-
| 0x28
| 0x28
|-
|-
| 0x50
| 0x50
| 0x18*4
| 0x18*0x04
| BlState
| BlState
| Contains the state of attempts to load each bootloader.
| Contains the state of attempts to load each bootloader.
| 0x01
| 0x01
| BootFromBootPartition
| BootFromBootPartition
|-
| 0x26
| 0x01
| BootModeReadSuccessful
|-
|-
| 0x27
| 0x27
| 0xF4
| 0xF4
| 0x0C
| 0x0C
| Padding
| Reserved
| Must be empty.
| Must be empty.
|}
=== Mariko ===
{| class="wikitable" border="1"
|-
! Offset
! Size
! Field
! Description
|-
| 0x00
| 0x04
| BootRomVersion
| Set to 0x00210001 (BOOTDATA_VERSION_T210).
|-
| 0x04
| 0x04
| DataVersion
| Set to 0x00210001 (BOOTDATA_VERSION_T210).
|-
| 0x08
| 0x04
| RcmVersion
| Set to 0x00210001 (BOOTDATA_VERSION_T210).
|-
| 0x0C
| 0x04
| BootType
|
None = 0
Cold = 1
Recovery = 2
Uart = 3
ExitRcm = 4
|-
| 0x10
| 0x04
| PrimaryDevice
| Set to 0x05 (IROM) on coldboot.
|-
| 0x14
| 0x04
| SecondaryDevice
| Set to 0x04 (SDMMC) on coldboot.
|-
| 0x18
| 0x04
| AuthenticationScheme
|
|-
| 0x1C
| 0x01
| EncryptionEnabled
|
|-
| 0x1D
| 0x03
|
|
|-
| 0x20
| 0x04
| BootROMtracker
|
|-
| 0x24
| 0x05*0x04
| BootTimeLog
|
{| class="wikitable" border="1"
|-
! Offset
! Size
! Field
|-
| 0x00
| 0x04
| BootTimeLogInit
|-
| 0x04
| 0x04
| BootTimeLogExit
|-
| 0x08
| 0x04
| BootSetupTickCnt
|-
| 0x0C
| 0x04
| BootReadBctTickCnt
|-
| 0x10
| 0x04
| BootReadBLTickCnt
|}
|-
| 0x38
| 0x10*0x28
| BootFlowLog
|
{| class="wikitable" border="1"
|-
! Offset
! Size
! Field
|-
| 0x00
| 0x04
| BootFlowLogInit
|-
| 0x04
| 0x04
| BootFlowLogExit
|-
| 0x08
| 0x04
| BootFlowFuncId
|-
| 0x0C
| 0x04
| BootFlowFuncStatus
|}
|-
| 0x2B8
| 0x04
| OscFrequency
| Value from CLK_RST_CONTROLLER_OSC_CTRL.
|-
| 0x2BC
| 0x01
| DevInitialized
| Set to 1 after the boot device is initialized.
|-
| 0x2BD
| 0x01
| SdramInitialized
| Set to 1 after the SDRAM parameters are parsed.
|-
| 0x2BE
| 0x01
| ClearedForceRecovery
| Set to 1 if bit 2 was set in APBDEV_PMC_SCRATCH0.
|-
| 0x2BF
| 0x01
| ClearedFailBack
| Set to 1 if bit 4 was set in APBDEV_PMC_SCRATCH0.
|-
| 0x2C0
| 0x01
| InvokedFailBack
| Set to 1 if the bootloaders have different versions in the BCT.
|-
| 0x2C1
| 0x01
| IRomPatchStatus
|
|-
| 0x2C2
| 0x01
| BctSizeValid
|
|-
| 0x2C3
| 0x09
| BctSizeStatus
|
|-
| 0x2CC
| 0x04
| BctSizeLastJournalRead
|
|-
| 0x2D0
| 0x04
| BctSizeBlock
|
|-
| 0x2D4
| 0x04
| BctSizePage
|
|-
| 0x2D8
| 0x01
| BctValid
| Set to 1 if the BCT was parsed successfully.
|-
| 0x2D9
| 0x09
| BctStatus
| Each bit contains the status for BCT reads in a given block.
|-
| 0x2E2
| 0x02
|
|
|-
| 0x2E4
| 0x04
| BctLastJournalRead
| Contains the status of the last journal block read.
None = 0
Success = 1
ValidationFailure = 2
DeviceReadError = 3
|-
| 0x2E8
| 0x04
| BctBlock
| Block number where the BCT was found.
|-
| 0x2EC
| 0x04
| BctPage
| Page number where the BCT was found.
|-
| 0x2F0
| 0x04
| BctSize
| Size of the BCT in IRAM.
|-
| 0x2F4
| 0x04
| BctPtr
| Pointer to the BCT in IRAM.
|-
| 0x2F8
| 0x18*0x04
| BlState
| Contains the state of attempts to load each bootloader.
{| class="wikitable" border="1"
|-
! Offset
! Size
! Field
|-
| 0x00
| 0x04
| Status
|-
| 0x04
| 0x04
| FirstEccBlock
|-
| 0x08
| 0x04
| FirstEccPage
|-
| 0x0C
| 0x04
| FirstCorrectedEccBlock
|-
| 0x10
| 0x04
| FirstCorrectedEccPage
|-
| 0x14
| 0x01
| HadEccError
|-
| 0x15
| 0x01
| HadCrcError
|-
| 0x16
| 0x01
| HadCorrectedEccError
|-
| 0x17
| 0x01
| UsedForEccRecovery
|}
|-
| 0x358
| 0x100
| SecondaryDevStatus
| Structure to hold secondary boot device status.
|-
| 0x458
| 0x03
|
|
|-
| 0x45B
| 0x04
| UsbChargingStatus
|
|-
| 0x45F
| 0x01
| PmuBootSelReadError
|
|-
| 0x460
| 0x04
| SafeStartAddr
| Pointer to the end of the BCT in IRAM.
|}
|}