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Development for the 5D mk II

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Offline ewavr

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    Re: Development for the 5D mk II
    « Reply #10 on: 05 / March / 2009, 18:05:36 »
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    Some information from russian forum - Memset succesfully dumped 5D mk II and 50D using own toolkit - http://www.zshare.net/download/56526976b795c07f/ (all instructions inside).

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    Offline PhyrePhoX

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    Re: Development for the 5D mk II
    « Reply #11 on: 05 / March / 2009, 19:47:48 »
    too bad google still cant translate this forum. nice move, kudos to memset.
    this will push the chdk-dslr development farther, and i seriously have to reconsider my "Coders Humiliate DSLR Kiddies" slogan soon ;)

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    Offline ewavr

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    Re: Development for the 5D mk II
    « Reply #12 on: 06 / March / 2009, 05:59:17 »
    ... and dumps from 5D Mk II:
    http://narod.ru/disk/6359802000/ROM0.bin.html
    http://narod.ru/disk/6359665000/ROM1.bin.html

    (enter captcha and press green button).

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    Re: Development for the 5D mk II
    « Reply #13 on: 06 / March / 2009, 06:03:09 »
    is it dryos (or better: CryOS :D) ? can they be loaded into IDA using the usual way? i guess not, at least applying the signatures and the like does not work, eh? afaik in the other dslrs dumps there were no functionnames, if i remember correctly.


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    Re: Development for the 5D mk II
    « Reply #14 on: 11 / March / 2009, 17:05:28 »
    could anyone post link to russian forum where 5d dumping toolkit was anounced ?

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    Offline ewavr

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    Re: Development for the 5D mk II
    « Reply #15 on: 11 / March / 2009, 17:30:08 »
    could anyone post link to russian forum where 5d dumping toolkit was anounced ?

    http://forum.ixbt.com/topic.cgi?id=20:22191 , pages 132-133

    Link to toolkit was posted to me and other forum members via PM.
    « Last Edit: 11 / March / 2009, 17:31:46 by ewavr »

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    Re: Development for the 5D mk II
    « Reply #16 on: 14 / March / 2009, 08:51:26 »
    Hi, does anybody look into 5dmk2 dumps ?

    I've looaded it into Ida pro.
    rom entry point looks like: ROM:F8010000                 LDR     PC, =0xFF81000C

    then at F801000C it looks like initialisation, but this "LDR PC" jump to some wrong place. Does anybody have clue if it IDa's wrong interpretation, or its dump with errors, or somthing else ? this LDR PC's instructions are also used in other places of code.

    does 50d dumps are also available ?

    Thanks.

    ROM:F801000C ; ---------------------------------------------------------------------------
    ROM:F801000C
    ROM:F801000C boot_entry
    ROM:F801000C                 MOV     R1, #0xC0000000
    ROM:F8010010                 LDR     R2, =0xD9C5D9C5
    ROM:F8010014                 STR     R2, [R1,#0x10]
    ROM:F8010018                 LDR     R2, =0xC0200000
    ROM:F801001C                 MOV     R1, #1
    ROM:F8010020                 STR     R1, [R2,#0x10C]
    ROM:F8010024                 MOV     R1, #0xFF
    ROM:F8010028                 STR     R1, [R2,#0xC]
    ROM:F801002C                 STR     R1, [R2,#0x1C]
    ROM:F8010030                 STR     R1, [R2,#0x2C]
    ROM:F8010034                 STR     R1, [R2,#0x3C]
    ROM:F8010038                 STR     R1, [R2,#0x4C]
    ROM:F801003C                 STR     R1, [R2,#0x5C]
    ROM:F8010040                 STR     R1, [R2,#0x6C]
    ROM:F8010044                 STR     R1, [R2,#0x7C]
    ROM:F8010048                 STR     R1, [R2,#0x8C]
    ROM:F801004C                 STR     R1, [R2,#0x9C]
    ROM:F8010050                 STR     R1, [R2,#0xAC]
    ROM:F8010054                 STR     R1, [R2,#0xBC]
    ROM:F8010058                 STR     R1, [R2,#0xCC]
    ROM:F801005C                 STR     R1, [R2,#0xDC]
    ROM:F8010060                 STR     R1, [R2,#0xEC]
    ROM:F8010064                 STR     R1, [R2,#0xFC]
    ROM:F8010068                 LDR     R1, =0xC0400008
    ROM:F801006C                 LDR     R2, =0x430005



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    Offline ewavr

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    Re: Development for the 5D mk II
    « Reply #17 on: 14 / March / 2009, 09:03:16 »
    Does anybody have clue if it IDa's wrong interpretation, or its dump with errors, or somthing else ? this LDR PC's instructions are also used in other places of code.

    Maybe something else - at camera startup code is copied from ROM (0xF8010000) to RAM (0xFF810000) for faster execution.
    But this is only my assumption.

    upd: Memset's comments on this dump:

    Quote
    Digic IV EOS ROM map

    0xF8000000 - ROM0 (64Mb)
    0xF0000000 - ROM1 (32Mb)

    0xF8000000 - 0xF0010000 - Flags & config area
    0xF8010000 - 0xF874FFFF - User area
    0xF8760000 - 0xF87BFFFF - FPGA config
    0xF87C0000 - 0xF7DFFFFF - Bind resource
    0xF87E0000 - 0xF87EFFFF - Bootrom cipher extension
    0xF87F0000 - 0xF87FFFFF - Bootloader (bootrom)

    FPGA config area: byte-by-byte interleaved bitstreams:
    bitstream 0: Xilinx Spartan-3E XC3S250E
    bitstream 1: Xilinx Spartan-3E XC3S100E
    « Last Edit: 14 / March / 2009, 09:08:38 by ewavr »


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    Re: Development for the 5D mk II
    « Reply #18 on: 15 / March / 2009, 17:04:36 »
    I'm new at camera tweaking so please bear with me.

    I'm close to 1000 named functions in IDA, though this is less than 10% of all functions in ROM0.  It's long and dull but straightforward.  I'll post a map file people can apply to their IDA projects when I've done the obvious stuff.  Otherwise we repeat a lot of work.

    I was under the impression that the ROM on these systems was at the end of memory so when I found some hardcoded references that didn't work I gave up on 0xF8000000 and reloaded ROM0 at 0xFF800000.  I did a hunt for the ARM reset vector at 0xFFFF0000 (alternative to 0x0) and there is a plausable jump leading to configuration code in an area that claims to be the bootloader at the end of ROM0.

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    Re: Development for the 5D mk II
    « Reply #19 on: 04 / April / 2009, 12:31:14 »
    As promised,

    http://www.mediafire.com/download.php?mwmwjyjhmq5

    About five thousand functions named.

     

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