be-gay-do-crimes
/
raspi-keygen
mirror of https://github.com/nucular/raspi-keygen
1
0
Fork 0
Code Issues Releases Wiki Activity

Merge pull request #2 from gnafuthegreat/patch-1 

Change references to "VP1" to the correct "VC-1"
This commit is contained in:
nucular 2019-06-24 22:35:18 +02:00 committed by GitHub
parent 61ea7d2f10 a459cf48a9
commit df4a522dbc
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
README.md
View File

@ -1,7 +1,7 @@
# raspi-keygen
This is an effort to reverse-engineer the Raspberry Pi license key check for
MPEG-2 and VP1 hardware video encoding.
MPEG-2 and VC-1 hardware video encoding.
## Patch
@ -70,7 +70,7 @@ not_MPG2: ; CODE XREF: is_licensed+68j
addcmpbeq r2, 0, 0, deny
```
Here, two memory locations (`0xEE86680` for MPEG-2 and `0xEE869E0` for VP1)
Here, two memory locations (`0xEE86680` for MPEG-2 and `0xEE869E0` for VC-1)
that point to the `.bss` segment are checked to determine the return value of
`is_licensed`. There are no other obvious references to these locations in
`start.elf`, so memory-breakpoint debugging (**TBD**) is probably needed.