Ootulp: Created page with "MB1-BCT is loaded by the bootrom (?) to 0x40040000, to be consumed by MB1. Unlike other boot payloads, the MB1-BCT is not updated with firmware update. MB1-BCT likely contains vendor-specific EMC configuration data to initialize LPDDR, so that the rest of the OS can be loaded. = Payload = This format is Nintendo-custom, and does not match the MB1-BCT format for Orin (t234). {| class="wikitable" border="1" |- ! Offset ! Size ! Description |- | 0x0 | 2 | Magic (A..."

2026-05-21T05:17:45Z

Created page with "MB1-BCT is loaded by the bootrom (?) to 0x40040000, to be consumed by MB1. Unlike other boot payloads, the MB1-BCT is not updated with firmware update. MB1-BCT likely contains vendor-specific EMC configuration data to initialize LPDDR, so that the rest of the OS can be loaded. = Payload = This format is Nintendo-custom, and does not match the MB1-BCT format for Orin (t234). {| class="wikitable" border="1" |- ! Offset ! Size ! Description |- | 0x0 | 2 | Magic (A..."

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MB1-BCT is loaded by the bootrom (?) to 0x40040000, to be consumed by MB1.

Unlike other boot payloads, the MB1-BCT is not updated with firmware update.

MB1-BCT likely contains vendor-specific EMC configuration data to initialize LPDDR, so that the rest of the OS can be loaded.

= Payload =
This format is Nintendo-custom, and does not match the MB1-BCT format for Orin (t234).

{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 2
| Magic (Always 'MM')
|-
| 0x2
| 2
|
|-
| 0x4
| 2
|
|-
| 0x6
| 2
| Size
|-
| 0x8
| 2
| DramConfigId? (Seen 0xE, 0x10, 0x11)
|-
| 0xA
| 2
|
|-
| 0xC
| 2
| ? (Seen 0, 0x2000, 0x3000)
|-
| 0xE
| 2
| ? (Seen 5)
|}

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