IXUS75/SD750 1.01a | 1.00b | 1.02a - Update 09Nov2008 - Passing the Torch - page 3 - General Discussion and Assistance - CHDK Forum
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IXUS75/SD750 1.01a | 1.00b | 1.02a - Update 09Nov2008 - Passing the Torch

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Offline whim

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #20 on: 07 / April / 2008, 18:57:27 »
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@somacore
@GrAnd

we got the 101B dump already: [DOWNLOAD LINKS] Firmware dumps available

wim
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Offline somacore

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #21 on: 07 / April / 2008, 20:26:34 »
I could use some assistance.

I've stepped through my dump side by side with the "how to add a new camera" guide and am not getting anywhere. I've changed some entries in lib.c, boot.c as shown below and CHDK still doesn't seem to want to load.

On the firm update screen it asks if I want to change from 1.0.2.0 to 1.0.1.1, I was thinking that might be the problem, the camera thinks it's downgrading, so it might not load chdk? I'm not sure.

void boot() - setup .data and .bss - Done

void h_usrInit() - Nothing interesting here. Just don't forget to fix the call to h_usrKernelInit(). -Done

void  h_usrKernelInit() -Done
 - fix R0(h_usrRoot) and (IMPORTANT!)
R2 (pMemPoolStart) parameters of kernelInit() call


Any thoughts? At all?

Edit: I'm using the source tree TPC gave me when he was done porting v1.01a
« Last Edit: 07 / April / 2008, 20:29:27 by somacore »
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Offline kennyb03

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #22 on: 08 / April / 2008, 00:37:15 »
somacore, I was in the same boat as you were at the top of this page.  I dumped and messed with my firmware for the sd450 and when I put it on the memory card, the camera restarted and nothing changed.  What did you change that made your camera not boot any more?  I know it's still not working, but it might help me because I'm stuck as well.
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Offline somacore

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #23 on: 08 / April / 2008, 07:01:26 »
Quote from: kennyb03 on 08 / April / 2008, 00:37:15
somacore, I was in the same boat as you were at the top of this page.  I dumped and messed with my firmware for the sd450 and when I put it on the memory card, the camera restarted and nothing changed.  What did you change that made your camera not boot any more?  I know it's still not working, but it might help me because I'm stuck as well.

The camera still does what it did at the top of page 2, reboots as though nothing is changed.

1. generate firmware
2. load to camera
3. upgrade firmware 1.0.2.0 -> 1.0.1.1
4. Say OK. Camera reboots, power LED flashes twice. Blue LED does NOT flash.
5. Camera goes back to playback mode, ignoring my effort



I think I might need to step through all the memory addresses in capt_seq or some other files, but we'll see. I have a sneaking suspicion about the version though.
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Offline somacore

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #24 on: 08 / April / 2008, 07:56:11 »
Here's my IDB link if anyone wants to give this a shot.

sd750is1.02a.idb - 38.77MB
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Offline kennyb03

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #25 on: 08 / April / 2008, 12:47:08 »
ok...that's exactly what's happening to me.  BUT my camera asks if I want to go from 1.0.0.0 to 1.0.1.1.  It doesn't work.  I also went though all these files: boot.c, capt_seq.c, lib.c, movie_rec.c, stubs_entry_2.s, stubs_min.s.

By going through, I mean I had a working firmware (1.00c) open in IDA and looked where every single address pointed to in the firmware.  Then I changed all the addresses in my files to match my firmware (1.00d).  I assume you're doing the same thing with your (1.01a) and (1.02a) firmwares.

...I just wanted to let you know that the version number is probably not the problem...I hope you can find out what's going.
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Offline mproko

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #26 on: 08 / April / 2008, 12:54:53 »
somacare, try this hint from the  TX-1 discussion:
http://chdk.setepontos.com/index.php/topic,774.msg6447.html#msg6447

This is to check if the changes to the platform/<camera>/main.c, platform/<camera>/sub/<version>/boot.c and platform/<camera>/sub/<version>/makefile.inc are done correct. It should take you to the blue led and splash screen.

After you have the splash screen working,  start enabling the lines from the hint and updating the other files.
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Offline Basq

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #27 on: 08 / April / 2008, 14:58:00 »
Quote from: kennyb03 on 08 / April / 2008, 12:47:08
ok...that's exactly what's happening to me.  BUT my camera asks if I want to go from 1.0.0.0 to 1.0.1.1.  It doesn't work.  I also went though all these files: boot.c, capt_seq.c, lib.c, movie_rec.c, stubs_entry_2.s, stubs_min.s.

By going through, I mean I had a working firmware (1.00c) open in IDA and looked where every single address pointed to in the firmware.  Then I changed all the addresses in my files to match my firmware (1.00d).  I assume you're doing the same thing with your (1.01a) and (1.02a) firmwares.

...I just wanted to let you know that the version number is probably not the problem...I hope you can find out what's going.

That's absolutely the same for me with an SD550 (IXUS750) as for you kennyb03. It wants to upgrade from 1.0.0.0 to 1.0.1.1. I made the same way as you mentioned (disassemlby dumped firmware, changing adresses, recompile the firmware) but the camera doesn't want to boot the CHDK.  :(

And I can't find also where this stores the firmware version number in the CHDK. :)

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Offline somacore

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Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #28 on: 08 / April / 2008, 20:45:06 »
Quote from: mproko on 08 / April / 2008, 12:54:53
somacare, try this hint from the  TX-1 discussion:
http://chdk.setepontos.com/index.php/topic,774.msg6447.html#msg6447

This is to check if the changes to the platform/<camera>/main.c, platform/<camera>/sub/<version>/boot.c and platform/<camera>/sub/<version>/makefile.inc are done correct. It should take you to the blue led and splash screen.

After you have the splash screen working,  start enabling the lines from the hint and updating the other files.

I do not have those lines in my main.c.

Halp.
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Offline TPC

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  • SD750 1.01a
Re: IXUS75/SD750 1.01a - Port (Maybe) Finished
« Reply #29 on: 09 / April / 2008, 15:08:58 »
Oh dear, I had almost forgotten about this thread.

The fact that you guys have gotten to the point of attempting to load CHDK through the firmware update prompt tells me that you're getting it to compile successfully. Cool! Still, I'm going to post a summary of EVERYTHING I did (all files that I modified) so you guys can get this running on your cameras too. CHDK for the my 1.01A has been running pretty good for the past few days, I figure it's mature enough.

I started by copying the SD1000 1.01b trunk source and then modified the files as follows:

\src\trunk\makefile.inc

Comments: I added the following line so I just had to type "GMAKE FIR" to compile my firmware, instead of specifying the platform and sub each time. Be sure to comment out all the other cameras, and check that your PLATFORMSUB is correct.

Quote
PLATFORM=ixus75_sd750
PLATFORMSUB=101a

\src\trunk\include\camera.h

Comments: I added the following quote directly below the IXUS65/SD650.

These settings seem to work fine for me. Keep in mind though that if you're getting a bunch of compile warnings, check to see that you haven't set one of these variables to "1" after using a "#undef".

Quote
#elif defined (CAMERA_ixus75_sd750)
    #define CAM_PROPSET                 2

    #define CAM_RAW_ROWPIX              3072   // for 7 MP
    #define CAM_RAW_ROWS                2304   // for 7 MP

/*
    #undef  CAM_USE_ZOOM_FOR_MF
    #undef  CAM_HAS_ERASE_BUTTON
    #undef  CAM_HAS_IRIS_DIAPHRAGM
    #define CAM_HAS_ND_FILTER           1
    #undef  CAM_HAS_MANUAL_FOCUS
    #undef  CAM_HAS_USER_TV_MODES
    #define CAM_SHOW_OSD_IN_SHOOT_MENU  1
    #undef  CAM_HAS_IS
    */
   
    #undef  CAM_SWIVEL_SCREEN               // Camera has rotated LCD screen
    #undef CAM_USE_ZOOM_FOR_MF            // Zoom lever can be used for manual focus adjustments
    #undef  CAM_ADJUSTABLE_ALT_BUTTON       // ALT-button can be set from menu
    #undef CAM_REMOTE                     // Camera supports USB-remote
    #undef  CAM_MULTIPART                   // Camera supports SD-card multipartitioning
    #define CAM_HAS_ZOOM_LEVER          1   // Camera has dedicated zoom buttons
    #undef  CAM_DRAW_EXPOSITION             // Output expo-pair on screen (for cameras which (sometimes) don't do that)
    #undef CAM_HAS_ERASE_BUTTON           // Camera has dedicated erase button
    #define CAM_HAS_IRIS_DIAPHRAGM      1   // Camera has real diaphragm mechanism
    #define  CAM_HAS_ND_FILTER         1      // Camera has build-in ND filter
    #undef CAM_CAN_SD_OVER_NOT_IN_MF      // Camera allows subject distance (focus) override when not in manual focus mode
    #undef CAM_CAN_SD_OVERRIDE            // Camera allows to do subject distance override
    #undef CAM_HAS_MANUAL_FOCUS           // Camera has manual focus mode
    #define CAM_HAS_USER_TV_MODES       1   // Camera has tv-priority or manual modes with ability to set tv value
    #define  CAM_SHOW_OSD_IN_SHOOT_MENU   1   // On some cameras Canon shoot menu has additional functionality and useful in this case to see CHDK OSD in this mode 
    #define CAM_CAN_UNLOCK_OPTICAL_ZOOM_IN_VIDEO  1 // Camera can unlock optical zoom in video (if it is locked)
    #define  CAM_FEATURE_FEATHER        1     // Cameras with "feather" or touch wheel.
    #undef CAM_HAS_IS                     // Camera has image stabilizer

    #define  CAM_CONSOLE_LOG_ENABLED   1      // Development: internal camera stdout -> A/stdout.txt       

//-- --------------------------------------------------------


\src\trunk\loader\ixus75_sd750\main.c
Comments: Changed the following line:

Quote
#define LED_PR 0xc02200C4

To:

Quote
#define LED_PR 0xc02200C0

At the time I didn't know if this was really the address for the print button LED, so I went with an address that I knew worked. You can probably get away with leaving it alone.

\src\trunk\platform\ixus75_sd750\main.c

Comments: Uncommented the following line:

Quote
//    { MODE_M,                  32772 },

MODE_P and MODE_M have the same property case, and there were alot of references in the code to MODE_M. I did this to "fix" problems in advance.

\src\trunk\platform\ixus75_sd750\sub\101a\boot.c

Comments:

Made the following changes/additions at the beginning of boot():
Quote
      // Theses values have been modified for the SD750 101a
    long *canon_data_src = (void*)0xFFB95390;
    long *canon_data_dst = (void*)0x1900;
    long canon_data_len = 0xCBF0;
    long *canon_bss_start = (void*)0xE4F0;
    long canon_bss_len = 0xBF650 - 0xE4F0;

I then copy and pasted h_usrInit function out of IDA and placed them in the file:

Quote
// Found at 0xFF811990
// Theses values have been modified for the SD750 101a
void h_usrInit()
{
    asm volatile (
   "STR     LR, [SP,#-4]!\n"
   "BL      sub_FF811968\n"
   "MOV     R0, #2\n"
   "MOV     R1, R0\n"
   "BL      sub_FF924148\n" //unknown_libname_237
   "BL      sub_FF918240\n" //excVecInit
   "BL      sub_FF8111C4\n"
   "BL      sub_FF811728\n"
   "LDR     LR, [SP],#4\n"
   "B       h_usrKernelInit\n"   // Originally loc_FF811744 <--- MAKE SURE YOU CHANGE THIS LINE
    );
}

h_usrKernelInit, with a modified line:

Quote
// Found at 0xFF811744
// Theses values have been modified for the SD750 101a
void  h_usrKernelInit()
{
    asm volatile (
   "STMFD   SP!, {R4,LR}\n"
   "SUB     SP, SP, #8\n"
   "BL      sub_FF924648\n" //classLibInit
   "BL      sub_FF934774\n" //taskLibInit
   "LDR     R3, =0x5AD0\n"
   "LDR     R2, =0xBC6C0\n"
   "LDR     R1, [R3]\n"
   "LDR     R0, =0xBD310\n"
   "MOV     R3, #0x100\n"
   "BL      sub_FF930364\n" //qInit
   "LDR     R3, =0x5A90\n"
   "LDR     R0, =0x5E30\n"
   "LDR     R1, [R3]\n"
   "BL      sub_FF930364\n" //qInit
   "LDR     R3, =0x5B4C\n"
   "LDR     R0, =0xBD2E4\n"
   "LDR     R1, [R3]\n"
   "BL      sub_FF930364\n" //qInit
   "BL      sub_FF938B30\n" //workQInit
   "BL      sub_FF8112AC\n"
   "MOV     R4, #0\n"
   "MOV     R3, R0\n"
   "MOV     R12, #0x800\n"
   "LDR     R0, =h_usrRoot\n" // R0, =sub_FF811A60 (h_usrRoot)) <--- MAKE SURE YOU CHANGE THIS LINE
   "MOV     R1, #0x4000\n"
    );   
//   "LDR     R2, =0xBF650\n"
    asm volatile (
        "LDR     R2, =new_sa\n"
        "LDR     R2, [R2]\n"
    );
    asm volatile (
   "STR     R12, [SP]\n"
   "STR     R4, [SP,#4]\n"
   "BL      sub_FF9319B4\n" //kernelInit
   "ADD     SP, SP, #8\n"
   "LDMFD   SP!, {R4,PC}\n"
    );
}

Finally, h_usrRoot:

Quote
// Found at 0xFF811A60
// Theses values have been modified for the SD750 101a
void  h_usrRoot()
{
    asm volatile (
   "STMFD   SP!, {R4,R5,LR}\n"
   "MOV     R5, R0\n"
   "MOV     R4, R1\n"
   "BL      sub_FF8119D0\n"
   "MOV     R1, R4\n"
   "MOV     R0, R5\n"
   "BL      sub_FF929100\n" //memInit
   "MOV     R1, R4\n"
   "MOV     R0, R5\n"
   "BL      sub_FF929B78\n" //memPartLibInit
  "BL      sub_FF8117E8\n" //nullSub_1
   "BL      sub_FF811704\n"
   "BL      sub_FF811A0C\n"
   "BL      sub_FF8119F0\n"
   "BL      sub_FF811A38\n"
   "BL      sub_FF8119C4\n"
    );

    _taskCreateHookAdd(createHook); <--- MAKE SURE YOU ADD THIS LINE
    _taskDeleteHookAdd(deleteHook); <--- AND THIS LINE TOO

    drv_self_hide();

    asm volatile (
   "LDMFD   SP!, {R4,R5,LR}\n"
   "B       sub_FF81136C\n" //IsEmptyWriteCache_2
    );
}

\src\trunk\platform\ixus75_sd750\capt_seq.c

Comments: Next I modified capt_seq.c, as it is required to make the camera boot.

I found the value in this line by finding the original value in the SD1000 dump, and then cross-referencing nearby functions in the SD750 dump:

Quote
    long *nrflag = (long*)0xCF74;

Moving on, I found sub_FF80D8CC (which may be different for your dump) the same way, by comparing line patterns and searching for nearby strings in the SD750 and SD1000 dumps. I copy/pasted from IDA and made the following changes. Pay careful attention to the way that the ASM lines have been formatted so as not to confuse the compiler (like the difference between "\n" and ":\n").

Quote
void __attribute__((naked,noinline)) sub_FFB0D8CC_my(long p) <--- ADD "_my" TO THE END OF THIS
{
    asm volatile (
               
                        "STMFD   SP!, {R4,LR}\n"
                        "MOV     R4, R0\n"
                        "SUB     SP, SP, #0xC\n"
                        "BL      sub_FFB0E33C\n"
                        "MVN     R1, #0\n"
                        "BL      sub_FFB1EAAC\n"   // ClearEventFlag
                        "MOV     R0, #0x8A\n"
                        "ADD     R1, SP, #4\n"
                        "MOV     R2, #4\n"
                        "BL      sub_FF81BCAC\n"
                        "TST     R0, #1\n"
                        "BEQ     loc_FFB0D90C\n"
                        "MOV     R1, #0x1D0\n"
                        "LDR     R0, =0xFFB0D750\n"   // aSscaptureseq_c
                        "ADD     R1, R1, #2\n"
                        "BL      sub_FFB2C138\n"      // DebugAssert
"loc_FFB0D90C:\n"
                        "LDR     R3, =0xBE160\n"
                        "LDR     R2, =0xBE220\n"
                        "LDR     R0, [R3,#0x7C]\n"
                        "LDRSH   R1, [R2,#0xE]\n"
                        "BL      sub_FFA44DE0\n"
                        "MOV     R0, R4\n"
                        "BL      sub_FFB0D6D4\n"
                        "BL      capt_seq_hook_set_nr\n"  // + <-- ADD THIS LINE
                        "LDR     R3, =0xCF78\n"
                        "LDR     R0, [R3]\n"
                        "B       sub_FFB0D930\n"
    );
}

Next function, sub_FFB0A6F4, copied and modified:

Quote
void __attribute__((naked,noinline)) sub_FFB0A6F4_my(long p) <--- ADD "_my" TO THE END OF THIS
{
    asm volatile (
                   
                     "STMFD   SP!, {R4,R5,LR}\n"
                     "LDR     R3, =0xBE160\n"
                     "LDR     R5, [R0,#0xC]\n"
                     "LDR     R1, [R3,#0x24]\n"
                     "LDR     R2, [R5,#8]\n"
                     "CMP     R1, #0\n"
                     "ORR     R2, R2, #1\n"
                     "STR     R2, [R5,#8]\n"
                     "BNE     loc_FFB0A748\n"
                     "MOV     R0, #0xC\n"
                     "BL      sub_FFB14C44\n"
                     "TST     R0, #1\n"
                     "BEQ     loc_FFB0A748\n"
                     "LDR     R3, [R5,#8]\n"
                     "MOV     R0, #1\n"
                     "ORR     R3, R3, #0x40000000\n"
                     "STR     R3, [R5,#8]\n"
"loc_FFB0A738:\n"
                     "MOV     R2, R5\n"
                     "MOV     R1, #1\n"
                     "LDMFD   SP!, {R4,R5,LR}\n"
                     "B       sub_FFB08E9C\n"
"loc_FFB0A748:\n"
                     "LDR     R4, =0xBE160\n"
                     "BL      sub_FFB0B1EC\n"      // Set_CMD25Write_62
                     "LDR     R3, [R4,#0x24]\n"
                     "CMP     R3, #0\n"
                     "BNE     loc_FFB0A790\n"
                     "MOV     R0, R5\n"
                     "BL      sub_FFB0C3D0\n"
                     "TST     R0, #1\n"
                     "BNE     loc_FFB0A738\n"
                     "BL      sub_FF82668C\n"
                     "BL      sub_FF81BEA8\n"
                     "STR     R0, [R5,#0x14]\n"
                     "MOV     R0, R5\n"
                     "BL      sub_FFB0D7B4\n"
                     "BL      sub_FFB0E1A8\n"
                     "MOV     R0, R5\n"
                     "BL      sub_FFB0D8CC_my\n"     //------------> <-- ADD THIS LINE, MAKE SURE THE FUNCTION NAMES MATCH
              "BL      capt_seq_hook_raw_here\n"  // + <-- OH YEAH ADD THIS TOO            
                     "B       loc_FFB0A7A4\n"
"loc_FFB0A790:\n"
                     "LDR     R3, =0xCF60\n"
                     "LDR     R2, [R3]\n"
                     "CMP     R2, #0\n"
                     "MOVNE   R0, #0x1D\n"
                     "MOVEQ   R0, #0\n"
"loc_FFB0A7A4:\n"
                     "MOV     R1, #1\n"
                     "MOV     R2, R5\n"
                     "BL      sub_FFB08E9C\n"
                     "BL      sub_FFB0DC48\n"
                     "CMP     R0, #0\n"
                     "LDRNE   R3, [R5,#8]\n"
                     "ORRNE   R3, R3, #0x2000\n"
                     "STRNE   R3, [R5,#8]\n"
                     "LDMFD   SP!, {R4,R5,PC}\n"               
    );
}
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