--- Log opened Wed Oct 27 00:07:40 2010
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14:08 < user890104> 20:53 <TheSeven> anyone with an embios'ed nano2g, a usb2.0 linux box and some spare time around?
14:08 < user890104> are you still looking, i think i match the requirements
14:12 < TheSeven> can you update to most recent svn, and try to run the following command?
14:13 < TheSeven> python embios.py ipodnano2g_dumpnand /tmp/nanddump
14:13 < TheSeven> i'd like to know if it manages to dump the full flash or if it dies with USB problems after some hunded MBs
14:14 < user890104> ok, do you have a precompiled installer around
14:33 < user890104> i'm compiling r229 now and will update my ipod when it's done
14:48 < user890104> emBIOS v0.1.3 r229 up and running
14:49 < user890104> seems like it's busy with something
14:50 < user890104> the HDD and USB indicators of VMware are blinking
14:51 < user890104> does this dump need to be identical to a dd if=/dev/sdb of=/tmp/something from disk mode?
14:57 < TheSeven> no
14:58 < TheSeven> th should have created four files
14:58 < TheSeven> it*
15:01 < user890104> the info file is empty (0 bytes)
15:01 < user890104> the other three are still being processed
15:02 < user890104> 2,1G data, 66M spare, 4,1M status so far
15:03 < user890104> running for about 14-15 min
15:04 < user890104> as i see in the source, the info file should contain some information about the flash
15:04 < TheSeven> yes
15:04 < user890104> and it is filled when the script starts
15:04 < TheSeven> but this apprears to be cached by python until the file is closed
15:05 < TheSeven> it will be written as soon as python terminates
15:05 < TheSeven> 2.1GB in 15 minutes is quite good
15:05 < user890104> of yes, it seems that it is not flushed to the filesystem yet
15:05 < user890104> it's 4 gb total (the flash size)
15:05 < TheSeven> ok
15:06 < user890104> will ping you when it's done
15:06 < TheSeven> so the data file will end up being 4.294.967.296 bytes big
15:06 < TheSeven> once it's finished, can you have a look at dmesg to check if there were some transmission errors it recovered from?
15:07 < user890104> ok, will check that
15:07 < TheSeven> IIRC linux handles those rather well, while on windows the device will be locked up until it is reconnected after a single failed transfer
15:08 < user890104> [37063.236902] usb 1-1: string descriptor 0 malformed (err = 2), defaulting to 0x0409
15:08 < user890104> this is the only strange thing so far
15:08 < user890104> i saw others reporting it, too
15:09 < user890104> it happens when connecting an ipod in embios mode
15:13 < user890104> so, as i understand the code, it's dumping the whole flash to memory in 8k pages which are 16 MB total, then reads each part and writes it to the data file
15:13 < user890104> what are the other 2 files dumping?
15:16 < user890104> dumped the whole flash in 26 minutes
15:16 < user890104> 4g data, 128m spare 8m status
15:17 < user890104> and 123 bytes info file :)
15:19 < user890104> NAND chip type: 0x2555d5ec Number of banks: 2 Number of blocks: 8192 Number of user blocks: 7744 Pages per block: 128
15:30 < TheSeven> sounds good
15:31 < TheSeven> if you want to study the FTL, you could use that dump now :)
15:32 < TheSeven> i'm still wondering what the matter with that string descriptor is
15:32 < TheSeven> not that it would cause any trouble, but I just don't understand what it's complaining about
15:33 < TheSeven> IIUC I'm sending 0x0409 (english) myself, so why is it moaning about that and then falling back to the same value I sent?
15:36 < user890104> it seems that you're sending 0x0409, but it thinks that it didn't receive the same
15:37 < TheSeven> yeah, but why?
15:40 < user890104> add it to the "weird things(tm)" list
15:41 < user890104> is it possible to sump the data exchanges between the ipod and the linux kernel to see what's passing on the wire
15:41 < user890104> dump*
15:41 < TheSeven> yes, I'll probably do that later on
15:41 < TheSeven> git wireshark/libpcap can to that
15:42 < user890104> ok, what about the nand dump, is there something particular to do with it or the point was to test how the os/usb/whatever reacts to such process?
15:43 < user890104> i can make one on windows to see how it goes
15:43 < TheSeven> the latter. i haven't managed to do a single complete dump on windows yet, it always stalled after at most 2GB
15:43 < TheSeven> usually after 160-500MB
15:43 < user890104> do you want me to pack & send you mine?
15:43 < TheSeven> so apparently this is not an ipod side problem, but either windows 7, libusb or just my machine
15:44 < TheSeven> i don't think that would be of much use
15:44 < TheSeven> or is there anything funky going on with your FTL that you would like to track down? :)
15:46 < user890104> actually, on the first run of rockbox ft. iloader, i got an black rockbox screen with some error message saying it's unable to load, but after restarting and running the check, it seems fine
15:46 < user890104> the more interesting part is, that rockbox was shut down properly
15:46 < user890104> but i haven't seen more issues after this single one
15:49 < user890104> the pages are 2kb each, right?
15:52 < TheSeven> yes
15:54 < user890104> the first starts with ascii 400A, then zeroes to the end, the second is all FF's, then the same pattern
15:54 < user890104> looks interesting
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15:58 < user890104> at 0x00080000 it goes different
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16:08 < TheSeven> yes
16:08 < TheSeven> the first block only contains that "400A" signature on all pages of the first bank
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18:24 < fmibot> New commit by theseven (r230): Fix another silly copy&paste bug in embios.py (ipodnano2g_wipenand)
18:24 < fmibot> r230 build result: All green!
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20:12 < benedikt93> so, finally finished the c rewrite of the sdram init code
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--- Log closed Thu Oct 28 00:25:10 2010