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Subject: Re: adding another OF database rebuild byte to the e200 bl

Re: adding another OF database rebuild byte to the e200 bl

From: Jonathan Gordon <jdgordy_at_gmail.com>
Date: Sun, 20 May 2007 13:13:38 +1000

I'm not sure what happened last night, but I redid the dumps and got
it working, it uses the same sector/offset as the other -A versioned
OF, so it might be contstant values for the -A and -E versions? is the
radio the only thing in the american version not in the eu version?

On 20/05/07, Barry Wardell <barry.wardell_at_gmail.com> wrote:
> It was just a single byte in the other versions that changed from 0 to
> 1 (so possibly just a single bit). That includes the 1.00.12E
> firmware, which I think is just the European version of your
> (American) 1.00.12 firmware. I would expect a very similar structure
> between the two. This page:
> http://www.rockbox.org/twiki/bin/view/Main/SansaE200FirmwarePartition
> has a breakdown of the firmware partition structure that I know of so
> far. As you can see from that page, the database rebuild flag is just
> a part of the NVPARAMS section of the partition. There's lots of other
> stuff in that section such as resume info, etc, so some of that may
> change between boots too. I guess it's just a matter of trial and
> error, there are only 3 bytes so it shouldn't take too long.
>
>
> On 5/19/07, Jonathan Gordon <jdgordy_at_gmail.com> wrote:
> > hey,
> > OK, so the other e200 I have here does actually have a different OF
> > from he 2 we know the locations of the byte to change.
> > I've done the two dumps and used got the diff, but I cant remember
> > what the previous diffs looked like so cant actually add it to the
> > BL... did they all have 3 bytes changed?
> >
> > So, first the diff of the relevant part of the dumps...
> > --- rbdump.txt 2007-05-20 00:37:17.000000000 +1000
> > +++ usbconnection.txt 2007-05-20 00:35:38.000000000 +1000
> > @@ -317010,11 +316990,8 @@
> > 007839c0 14 00 00 00 ec 37 00 00 05 00 00 00 00 00 00 00 |.....7..........|
> > 007839d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> > 007839e0 00 00 00 00 00 00 00 00 00 00 00 00 13 00 00 00 |................|
> > -007839f0 14 00 00 00 1c 38 00 00 05 00 00 00 00 00 00 00 |.....8..........|
> > +007839f0 14 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> > 00783a00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> > -00783a10 00 00 00 00 00 00 00 00 00 00 00 00 13 00 00 00 |................|
> > -00783a20 14 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> > -00783a30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> > *
> > 00800000 19 37 46 93 d1 a9 c3 2d c3 87 d0 a6 2d 99 0e ac |.7F....-....-...|
> > 00800010 ab a1 55 0f e8 86 09 9e b7 95 e1 c0 c2 32 68 68 |..U..........2hh|
> >
> > The OF version string: PP5022AF-05.51-S301-00.12-S301.00.12A-D
> >
> > and attached is the updated bootloader to handle adding new OF's more
> > easily. (also a change to e200-buttons.c to get buttons working in the
> > BL again, although, enabling the interupts would be better probbaly?)
> >
> > I'm going to bed, have fun at devcon :)
> >
> >
>
Received on 2007-05-20


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