SPU Isolated Modules Reverse Engineering: Difference between revisions

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== aim_spu_module ==
== aim_spu_module ==
It is used to retrieve the device type, device id, open psid and the pscode from the EID0 data that is passed in.
It is used to retrieve the device type, device id, open psid and the pscode from the EID0 data that is passed in.


=== Debug messages ===
=== Debug messages ===
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! colspan="2" | Address !! rowspan="2" | Message
! colspan="2" | Address !! rowspan="2" | Message
|-
|-
! ? 3.41 ? !! 355 CEX
! ? 3.41 ? !! 355 CEX
|-
|-
| 0x36f0 || 0x3570 || "(spu)start aim spu module!\n"
| 0x36f0 || 0x3570 || "(spu)start aim spu module!\n"
Line 18: Line 19:
|}
|}
This messages are DMAed to the ppu if a debug output address is specified.
This messages are DMAed to the ppu if a debug output address is specified.




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! colspan="2" | Address !! rowspan="2" | Message
! colspan="2" | Address !! rowspan="2" | Message
|-
|-
! ? 3.41 ? !! 355 CEX
! ? 3.41 ? !! 355 CEX
|-
|-
| 0x37e0 || - || Reference tool fallback IDPS
| 0x37e0 || - || Reference tool fallback IDPS
Line 35: Line 35:
| 0x3c70 || 0x3a20 || AES inverse sbox (16*16 bytes)
| 0x3c70 || 0x3a20 || AES inverse sbox (16*16 bytes)
|}
|}




=== Functions ===
=== Functions ===
{| class="wikitable"
{| class="wikitable"
! Address !! Name !! Parameters !! Info
! colspan="2" | Address !! rowspan="2" | Name !! rowspan="2" | Parameters !! rowspan="2" | Info
|-
! ? 3.41 ? !! 355 CEX
|-
|-
| 0x9e0 || stop_func || unknown || Stops the module execution with various stop codes.
| 0x9e0 ||  || stop_func || unknown || Stops the module execution with various stop codes.
|-
|-
| 0xa18 || main_func || unknown || Main routine.
| 0xa18 ||  || main_func || unknown || Main routine.
|-
|-
| 0xf18 || response || unknown || Sends response to ppu over DMA.
| 0xf18 ||  || response || unknown || Sends response to ppu over DMA.
|-
|-
| 0x1158 || process_eid || unknown || Decrypts EID0.
| 0x1158 ||  || process_eid || unknown || Decrypts EID0.
|-
|-
| 0x1438 || prepare_print || unknown || Prepares debug output.
| 0x1438 ||  || prepare_print || unknown || Prepares debug output.
|-
|-
| 0x1440 || debug_print || unknown || As the name already states... (this outputs over DMA)
| 0x1440 ||  || debug_print || unknown || As the name already states... (this outputs over DMA)
|-
|-
| 0x17f0 || - || - || Part of aes implementation.
| 0x17f0 ||  || - || - || Part of aes implementation.
|-
|-
| 0x1c48 || - || - || Part of aes implementation.
| 0x1c48 ||  || - || - || Part of aes implementation.
|-
|-
| 0x1df0 || - || - || Probably part of aes implementation.
| 0x1df0 ||  || - || - || Probably part of aes implementation.
|-
|-
| 0x20f0 || - || - || Probably part of aes implementation.
| 0x20f0 ||  || - || - || Probably part of aes implementation.
|-
|-
| 0x2300 || - || - || Probably part of aes implementation.
| 0x2300 ||  || - || - || Probably part of aes implementation.
|-
|-
| 0x2418 || - || - || Part of aes implementation.
| 0x2418 ||  || - || - || Part of aes implementation.
|-
|-
| 0x2608 || - || - || Part of aes implementation.
| 0x2608 ||  || - || - || Part of aes implementation.
|-
|-
| 0x30c0 || do_dma || ls_addr:$4, dma_effective_addr:$5, size:$6, tag_id:$7, unk0:$8, unk1:$9 || Used to dma data in and out of the isolated module's LS.
| 0x30c0 ||  || do_dma || ls_addr:$4, dma_effective_addr:$5, size:$6, tag_id:$7, unk0:$8, unk1:$9 || Used to dma data in and out of the isolated module's LS.
|-
|-
| 0x3168 || write_tag_mask_bit || mask_bit:$4 || Used to set a specific bit in MFC_WrTagMask.
| 0x3168 ||  || write_tag_mask_bit || mask_bit:$4 || Used to set a specific bit in MFC_WrTagMask.
|}
|}




==== Disasm ====
==== Disasm ====
The complete disassembly is available at [http://pastebin.com/7vArGweJ].
The complete disassembly is available at [http://pastebin.com/7vArGweJ].




=== Running in anergistic ===
=== Running in anergistic ===
-> http://pastie.org/2000330
-> http://pastie.org/2000330

Revision as of 18:10, 20 September 2011

aim_spu_module

It is used to retrieve the device type, device id, open psid and the pscode from the EID0 data that is passed in.


Debug messages

Address Message
? 3.41 ? 355 CEX
0x36f0 0x3570 "(spu)start aim spu module!\n"
0x3710 0x3590 "(spu) PU DMA area start address is not align 16byte\n"
0x3750 0x35d0 "(spu) PU EID area start address is not align 16byte\n"
0x3790 0x3610 "(spu) PU DMA area size is not equall to AIM_DMA_SIZE\n"

This messages are DMAed to the ppu if a debug output address is specified.


Data

Address Message
? 3.41 ? 355 CEX
0x37e0 - Reference tool fallback IDPS
0x37f0 - ... 0x3650 - ... Start of EID keys
0x3ac0 0x3870 AES sbox (16*16 bytes)
0x3c70 0x3a20 AES inverse sbox (16*16 bytes)


Functions

Address Name Parameters Info
? 3.41 ? 355 CEX
0x9e0 stop_func unknown Stops the module execution with various stop codes.
0xa18 main_func unknown Main routine.
0xf18 response unknown Sends response to ppu over DMA.
0x1158 process_eid unknown Decrypts EID0.
0x1438 prepare_print unknown Prepares debug output.
0x1440 debug_print unknown As the name already states... (this outputs over DMA)
0x17f0 - - Part of aes implementation.
0x1c48 - - Part of aes implementation.
0x1df0 - - Probably part of aes implementation.
0x20f0 - - Probably part of aes implementation.
0x2300 - - Probably part of aes implementation.
0x2418 - - Part of aes implementation.
0x2608 - - Part of aes implementation.
0x30c0 do_dma ls_addr:$4, dma_effective_addr:$5, size:$6, tag_id:$7, unk0:$8, unk1:$9 Used to dma data in and out of the isolated module's LS.
0x3168 write_tag_mask_bit mask_bit:$4 Used to set a specific bit in MFC_WrTagMask.


Disasm

The complete disassembly is available at [1].


Running in anergistic

-> http://pastie.org/2000330

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