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Patent Reveals Sony to Increase PS3 Power via External Processor


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197w ago - As a follow-up to his recent PS3 SELF Decrypter PSGroove Payload and PS3 3.50 Firmware Decryption work, today PlayStation 3 developer graf_chokolo has released a PS3 LV2 Kernel Decrypter payload for PSGroove.

Download: PS3 LV2 Kernel Decrypter PSGroove Payload / [Register or Login to view links]

To quote from his comment on xorloser's blog, linked above:

graf_chokolo says:

I just release my lv2 kernel decrypter You need metldr, lv2ldr, RL_FOR_PROGRAM.img and lv2_kernel.self. You have first to dump your metldr from FLASH memory. lv2ldr you will find also in your FLASH memory or in decrypted CORE_OS_PACKAGE.pkg from PUP files.

RL_FOR_PROGRAM.img is a revoke list for programs and can be also found in PUP files. lv2_kernel.self is on your FLASH memory or in decrypted CORE_OS_PACKAGE.pkg.

First i send all files to PS3 and store them in memory. After that i load metldr in isolation mode and pass it the addr e ss of lv2ldr. The code is very low level and many things are done by directly manipulating SPU registers

If you have any questions or problems then feel free to contact me or ask here. I will try to help you. I will try to document my findings on my homepage

I also uploaded a code which can communicate with USB Dongle AUthenticator by using Dispatcher Manager without using any GameOS functions It’s exactly what GameOS does, just low level

Have fun guys

lv2_kernel.self from 1.10 firmware decrypted

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Guys, just to make sure that you know LV2 decrypter is also PS2 emu decrypter, just change LPAR auth id in code PS2 emu is like GameOS, it’s LV2 and is decrypted by lv2ldr

Just decrypted vsh.self from 1.10 firmware Just like old good days

I decrypted software_update_plugin.sprx but didn’t have time to reverse it yet

metldr

Loading metldr

  • Physical/Virtual memory address of an isolation module that should be loaded by metldr is written into SPU register SPU_In_Mbox. The SPU register SPU_In_Mbox is 32bit, so 64bit memory address is written in 2 steps.
  • MFC relocation is turned off by clearing R-bit in SPU register MFC_SR1. By doing this, HV enables real address mode for MFC of SPU.
  • On GameOS, it also works with relocation on. You just have to initialize SLB of SPU and insert valid SLB entries.
  • Physical/Virtual memory address of metldr is written to SPU registers Sig_Notify1 and Sig_Notify2
  • Isolation load request is enabled by writing SPU register SPU_PrivCntl
  • Isolation load request is made by writing value 0x3 into SPU register SPU_RunCntl

Methods

SPE_load_request_metldr - 0x002B00A4 (3.15)

lv2ldr

  • lv2ldr is used to decrypt lv2_kernel.self
  • syscalls 0x10042 and 0x1004A use lv2ldr
  • syscall 0x10042 is used by HV Process 3 during LV2 LPAR construction
  • syscall 0x1004A uses different parameters as syscall 0x10042

Methods

SPE_load_request_lv2ldr_1 - 0x002AE82C (3.15)

SPE_load_request_lv2ldr_2 - 0x002AE8D8 (3.15)

Loading lv2ldr

  • 64 bit memory address of lv2ldr is written into 32 bit SPU register SPU_In_Mbox
  • metldr is loaded

Decrypting SELFs with appldr and lv1_undocumented_function_99

  • lv1_undocumented_function_99 loads and prepares appldr for SELF decryption.
  • When appldr is ready to decrypt data, it sends a message via mailbox.
  • The address and the size of the encrypted data is passed to appldr via a shared memory.







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Comments 39 Comments - Go to Forum Thread »

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Jes03's Avatar
#19 - Jes03 - 197w ago
I think this is just the PS2 addon. It was stupid of them to remove PS2 BC in the first place then later build a stupid addon for PS2 BC when it could've and was in the system to start with.

semitope's Avatar
#18 - semitope - 197w ago
why bother. they can just put those processors in a new console and add a better gpu. call it a day.
Quote Originally Posted by TonyHart View Post
Ensokusha summed up my thinking exactly. The PS3 is very powerful already, except for two areas:

Graphics are good, but with constant advances in graphics technology, they have been surpassed by current PC capabilities.

Memory. 256Mb just isn't enough for intensive modern games programming. If you have played "The Orange Box", you will know about the frequent level loading that detracts from the game experience. This could be due to a rushed port of the game, but I think it is probably the lack of memory to store textures etc.

The PS3 is not equipped with a powerful enough port to interface with a better graphics or memory solution, so I think the patent has no relation to the PS3. It is just speculation...

I have to disagree with your memory comments. People with 256MB memory on their GPU can still run quite a few of the newer games and even more so with that memory on a console.

TonyHart's Avatar
#17 - TonyHart - 197w ago
Ensokusha summed up my thinking exactly. The PS3 is very powerful already, except for two areas:

Graphics are good, but with constant advances in graphics technology, they have been surpassed by current PC capabilities.

Memory. 256Mb just isn't enough for intensive modern games programming. If you have played "The Orange Box", you will know about the frequent level loading that detracts from the game experience. This could be due to a rushed port of the game, but I think it is probably the lack of memory to store textures etc.

The PS3 is not equipped with a powerful enough port to interface with a better graphics or memory solution, so I think the patent has no relation to the PS3. It is just speculation...

Markps2it's Avatar
#16 - Markps2it - 197w ago
What about using HDMI? if I remember correcly , it's programmable ad has an high bandwidth. Maybe Sony is thinking about a workaroud to upgrade 3d graphical permormances, or maybe a hardware solution for ps2 game compatiblity., or maybe an hardware video scaler (which I prefer the most).

bgrewar's Avatar
#15 - bgrewar - 197w ago
LOL the nintendo 64 did this once haha. But yeh. It would work but how it would go into the ps3 would be a different issue!! The USB would have latency problems to get the information leading to a speed slower than the hardware itself inside the PS3.

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