3dbrew

Changes

IO Registers (edit)

Revision as of 16:43, 30 March 2015

849 bytes removed ,  16:43, 30 March 2015
→‎0x10012000
Line 455: Line 455:  
ARM11 kernel virtual address mappings for these registers varies for different builds. For ARM11 user mode applications you have:
 
ARM11 kernel virtual address mappings for these registers varies for different builds. For ARM11 user mode applications you have:
 
  physaddr = virtaddr - 0x1EC00000 + 0x10100000
 
  physaddr = virtaddr - 0x1EC00000 + 0x10100000
−
  −
=0x10012000=
  −
Keys seem to be stored here? Access to this region is disabled once the ARM9 writes 0x2 to [[CONFIG|REG_SYSPROT9]].
  −
  −
Originally the console-unique TWL keyinit + region disable was done by Kernel9. However, with the [[New_3DS]] FIRM ARM9 binary this is now done in the [[FIRM]] ARM9 binary loader, which also uses the 0x10012000 region for key generation.
  −
  −
The first 0x100-bytes here are console-unique.
  −
  −
{| class="wikitable" border="1"
  −
!  Offset
  −
!  Size
  −
!  Description
  −
|-
  −
| 0x0
  −
| 0x8
  −
| On development units ([[CONFIG|UNITINFO]]!=0) ARM9 uses the first 8-bytes from 0x10012000 for the TWL keydata. This doesn't seem to be used by NATIVE_FIRM on retail, besides New3DS key-generation in the [[FIRM|ARM9-loader]].
  −
|-
  −
| 0x8
  −
| 0xF8
  −
| ?
  −
|-
  −
| 0x100
  −
| 0x8
  −
| Before writing REG_SYSPROT9 bit1, the ARM9 copies the 8-byte TWL-keydata to here.
  −
|}
 
Retrieved from "https://www.3dbrew.org/wiki/Special:MobileDiff/12178"