Changes

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.

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.

On development units ([[CONFIG|UNITINFO]]!=0) ARM9 uses the first 8-bytes from 0x10012000 for the TWL keydata. This region doesn't seem to be used by NATIVE_FIRM on retail at all, besides New3DS key-generation in the [[FIRM|ARM9-loader]]. It is unknown if bootrom reads from it, but probably.

On development units ([[CONFIG|UNITINFO]]!=0) ARM9 uses the first 8-bytes from 0x10012000 for the TWL Console ID. This region doesn't seem to be used by NATIVE_FIRM on retail at all, besides New3DS key-generation in the [[FIRM|ARM9-loader]]. It is unknown if bootrom reads from it, but it is likely.

{| class="wikitable" border="1"

{| class="wikitable" border="1"

| 0x100

| 0x100

| 0x8

| 0x8

| Before writing REG_SYSPROT9 bit1, the ARM9 copies the 8-byte TWL-keydata to here.

| Before writing REG_SYSPROT9 bit1, the ARM9 copies the 8-byte TWL Console ID here. This sets the registers at 0x4004D00 for ARM7.

|}

|}