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Porting chdk to the G9

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Offline bongo_bingo

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Re: Porting chdk to the G9
« Reply #50 on: 22 / April / 2008, 14:59:57 »
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I'm surely not a programmer,
added the following code at the beginning of \resetcode\main.c

long* led=(long*)0xC0220094;

void on(void)
{
 *led=0x46;
}

But nothing happens

Is it possible to control if this led addresses are correct looking at the dump?
« Last Edit: 22 / April / 2008, 15:02:57 by bongo_bingo »
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Offline GrAnd

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Re: Porting chdk to the G9
« Reply #51 on: 22 / April / 2008, 15:27:30 »
Quote from: bongo_bingo on 22 / April / 2008, 14:59:57
I'm surely not a programmer,
added the following code at the beginning of \resetcode\main.c

long* led=(long*)0xC0220094;

void on(void)
{
 *led=0x46;
}

But nothing happens

Did you call this function at least?
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Offline Titan_G9

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Re: Porting chdk to the G9
« Reply #52 on: 22 / April / 2008, 15:39:34 »
Quote from: bongo_bingo on 22 / April / 2008, 14:59:57
I'm surely not a programmer,

Well, I'm not a programmer, neither.  ;)

Quote from: bongo_bingo on 22 / April / 2008, 14:59:57

added the following code at the beginning of \resetcode\main.c

long* led=(long*)0xC0220094;

void on(void)
{
 *led=0x46;
}

But nothing happens

This code worked for me well when I dumped the firmware by "g7_blinker"

Quote from: bongo_bingo on 22 / April / 2008, 14:59:57
Is it possible to control if this led addresses are correct looking at the dump?

The LED addresses shuold be correct (I've discovered them when I was working on blinking the firmware)

Probably your code those not  arrive to that point when you try to turn on the led.
Try to place it in an erarlier point. (I think)

Cheers

Edit1: The led addresses refer to 1.00D, but I think (hope) they are the same in 1.00D and 1.00F .
« Last Edit: 22 / April / 2008, 15:42:21 by Titan_G9 »
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Offline bongo_bingo

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Re: Porting chdk to the G9
« Reply #53 on: 22 / April / 2008, 15:52:58 »
Isn't \resetcode\main.c the first thing wich loads?

How to use gensig.exe?

GrAnd you suggested to compare the g9 and the a720 diskboot.bin in ida, can you, please, suggest  even the addresses?
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Offline Titan_G9

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Re: Porting chdk to the G9
« Reply #54 on: 22 / April / 2008, 16:01:25 »
bongo:

http://chdk.wikia.com/wiki/G9 section "How to dump the G9 firmware" there are 3 diskboot.bin files
(AF beam, Blue led, ISO Led) If you try each one you can be sure the led blinking working.  :)

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Offline GrAnd

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Re: Porting chdk to the G9
« Reply #55 on: 22 / April / 2008, 16:02:09 »
Quote from: bongo_bingo on 22 / April / 2008, 15:52:58
How to use gensig.exe?

It's used automatically in some cases. Your case does not need it.


Quote from: bongo_bingo on 22 / April / 2008, 15:52:58
GrAnd you suggested to compare the g9 and the a720 diskboot.bin in ida, can you, please, suggest  even the addresses?

Not DISKBOOT.BIN, but PRIMARY.BIN.



And again: In which function you calls the 'on()' function?
« Last Edit: 22 / April / 2008, 16:05:20 by GrAnd »
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Offline bongo_bingo

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Re: Porting chdk to the G9
« Reply #56 on: 22 / April / 2008, 17:29:36 »
A very dirty thing in \loader\resetcode\main.c

Edit 1:

ops, wrong file I've sended
« Last Edit: 22 / April / 2008, 17:48:22 by bongo_bingo »
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Offline bongo_bingo

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Re: Porting chdk to the G9
« Reply #57 on: 23 / April / 2008, 06:16:16 »
The light works with the diskboot on the g9 wiki.

I'm posting the actual modified sources.

It wont compile anymore, don't know what I've changed. :'(

-> main.elf
../platform/g9/sub/100f/libplatformsub.a(stubs_entry_2.o): In function `_taskSus
pend':
stubs_entry_2.S:(.text+0x358): undefined reference to `FFC00958'
collect2: ld returned 1 exit status
c:\CHDK\gcc\bin\gmake[1]: *** [main.elf] Error 1
gmake: *** [all-recursive] Error 1

Edit 1:

- I'll upload my primary.bin when zshare back on line

« Last Edit: 23 / April / 2008, 06:43:54 by bongo_bingo »
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Offline GrAnd

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Re: Porting chdk to the G9
« Reply #58 on: 23 / April / 2008, 06:48:52 »
Quote from: bongo_bingo on 23 / April / 2008, 06:16:16
It wont compile anymore, don't know what I've changed. :'(
stubs_entry_2.S:(.text+0x358): undefined reference to `FFC00958'

It looks like you modified something in stubs_entry_2.S and wrote the FFC00958 (instead of 0xFFC00958 ?).
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Offline bongo_bingo

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Re: Porting chdk to the G9
« Reply #59 on: 23 / April / 2008, 14:24:27 »
Quote from: GrAnd on 23 / April / 2008, 06:48:52
Quote from: bongo_bingo on 23 / April / 2008, 06:16:16
It wont compile anymore, don't know what I've changed. :'(
stubs_entry_2.S:(.text+0x358): undefined reference to `FFC00958'

It looks like you modified something in stubs_entry_2.S and wrote the FFC00958 (instead of 0xFFC00958 ?).

You were right!

Anyway, I fixed the error but there's a little something that wont work.

GrAnd, I want to try to analyze the a720 dump, which are the addresses to load it in Ida?

Observation:

Last night I forgot the sd with the diskboot I've compiled in the cam, thi morning the battery were down.
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