e3-hacking

e3-hacking@earth.li

395 discussions

Keypress output
by Jonathan McDowell 26 Feb '06

26 Feb '06

Can someone running the 2.6 kernel try pushing the q and j keys on their E3 keyboard (the one on the device, not the mailboard) and let me know if they get any output like: omap-keypad: Spurious key event x-y where x and y are numbers? I'm wondering if I've messed a cable up putting mine back together or if it just has something odd for some of the keys. J. -- No... Don't stop...

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RE: [E3-hacking] All your hard work...
by jasmine＠electronpusher.org 26 Feb '06

26 Feb '06

On Fri, 24 Feb 2006, George Sanders wrote: > Is it possible that Amstrad have locked down the E3 so tight to make sure it > can't be hacked and they are laughing at this??? No. There isn't a "lockdown". What's more, there are Amstrad employees being helpful and even giving us important information on how to program this thing, on this list, even. If they did make it secure, it wouldn't be possible to do anything like what we're doing. -J.

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RE: [E3-hacking] All your hard work...
by en4rab 25 Feb '06

25 Feb '06

--- George Sanders <george.sanders(a)freezone.co.uk> wrote: > Is it possible that Amstrad have locked down the E3 so tight to make > sure it > can't be hacked and they are laughing at this??? Im fairly sure Amstrad do have plans to introduce a bootloader that uses RSA signatures to ensure the software it runs is properly signed so as to stop you running your own software on the E3 but so far nobody seem to have gotten an E3 from the shops with a new bootloader so it doesent appear that there is any thing to stop you, that said i havent had the chance to try my E3 which i have just bought. Even if they did change the bootloader it isnt an overly difficult job to desolder the NOR flash and reprogram it with the older bootloader then resolder it onto the board, A £15 "gascat" gas soldering iron from maplin with the hot air attachment will do for desoldering surface mount chips if you are carefull and you can put them back on with a normal soldering iron and some solder wick. And for programming the chips there are several cheap programmers available, im not sure what NOR chip the E3 uses but if its supported then the willem programmer is quite a good one (www.willem.org) there are several clones of this design available on ebay too. en4rab -- | .-. en4rab(a)yahoo.com | / \ .-. | / \ / \ .-. .-. _ _ +--/-------\-----/-----\-----/---\---/---\---/-\-/-\/\/--- | / \ / \ / '-' '-' |/ '-' '-' -END OF TRANSMISSION- __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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NAND flash driver.
by Jonathan McDowell 25 Feb '06

25 Feb '06

I think I'm getting somewhere with the NAND flash driver; I now have the Linux mtd infrastructure detecting it and seemingly letting me read from it. I haven't tried writing yet and it's a bit of a mess, but I think the major work is done now: i2c /dev entries driver In ams_delta_init for NAND! NAND device: Manufacturer ID: 0x98, Chip ID: 0x75 (Toshiba NAND 32MiB 3,3V 8-bit) Scanning device for bad blocks Bad eraseblock 257 at 0x00404000 <snip lots of bad eraseblocks> Bad eraseblock 1841 at 0x01cc4000 Creating 3 MTD partitions on "NAND 32MiB 3,3V 8-bit": 0x00000000-0x00100000 : "Amstrad Foo" 0x00100000-0x00300000 : "E3 kernel partition" 0x00300000-0x02000000 : "E3 file system partition" usbmon: debugfs is not available ohci_hcd: 2005 April 22 USB 1.1 'Open' Host Controller (OHCI) Driver (OMAP) ohci_hcd: block sizes: ed 64 td 64 J. -- ] http://www.earth.li/~noodles/ [] You drive a hard bargain for a [ ] PGP/GPG Key @ the.earth.li [] seagull. [ ] via keyserver, web or email. [] [ ] RSA: 4DC4E7FD / DSA: 5B430367 [] [

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RE: [E3-hacking] All your hard work...
by George Sanders 24 Feb '06

24 Feb '06

Is it possible that Amstrad have locked down the E3 so tight to make sure it can't be hacked and they are laughing at this???

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New buildroot config
by Martin Whitaker 24 Feb '06

24 Feb '06

Hi Folks, With help from friends I've now got a buildroot config which doesn't need busybox to be statically linked... telnetd also works properly too. Yay! The major change is telling it not to use the daily snapshots of uClibc and busybox, as well as changing to gcc4.0.2. You still need to comment out the startup scripts in inittab as before though. Attached is the new buildroot config:

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RE: [E3-hacking] E3 u-boot & Linux
by Cliff Lawson 23 Feb '06

23 Feb '06

But I think most of our stuff is fairly kernel agnostic anyway. > -----Original Message----- > From: Jonathan McDowell [mailto:noodles@earth.li] > > Probably true, but the other option is to end up running an ancient > 2.4.18 based kernel. Aside from the numerous security issues that have > been fixed since then there are quite simply some things that can't be > added modularly to a kernel that we don't have proper source > for. IPv6, > for example, is something that's of use to me but impossible without a > kernel recompile. This e-mail and any attachments are confidential and intended exclusively for the addressee. If you are not the intended recipient please delete it from your system and notify the sender immediately. This message is attributed to the sender and may not necessarily reflect the views of Amstrad Plc or its subsidiaries. For further information on Amstrad Plc please visit our website: www.amstrad.com Amstrad Plc. Brentwood House 169 Kings Road Brentwood Essex CM14 4EF Registered in England : No. 955321

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RE: [E3-hacking] E3 u-boot & Linux
by Cliff Lawson 23 Feb '06

23 Feb '06

Lads, I can't help thinking you may be reinventing the wheel a bit here. > -----Original Message----- > From: Jonathan McDowell [mailto:noodles@earth.li] > > Not supported yet: > > * LCD (Mark Underwood is working on it, there's code in the Amstrad > source) There's already a /dev/fb driver for the LCD in the kernel - is there some argument against using that? I've got the LCD setup in (4x0):4:4:4 mode, not 5:6:5 mode by the way as the R, G and B are limited to 4 bits each 5:6:5 isn't 5:6:5 anyway! In fact bit patterns 1110 and 1111 for each of R, G and B are the same colour so rather than 4096 colours there are 3375 (i.e. 15*15*15, not 16*16*16) > * modem UART (I don't think this should be hard to get going; > Smart SMC > at 0xeb000000 on irq 66 according to dmesg on 2.4) There's already a serial port driver mapped to the modem in the kernel > * sound (no idea; there's omap sound code in the tree, but does the E3 > use this?) just insmod our ams_beep_mod.o device driver (its in the initrd) and it hooks the kd_mksound vector in drivers\char\vt.c so that when vt_ioctl() is called with KDMKTONE (such as for a console "beep") it invokes the routine in ams_beep_mod.o which, in turn, uses the PWT generator in the OMAP but, as you'll read in the OMAP datasheet this can only generate 48 frequencies (12 notes in 4 ocatves) so my code matches the given Hz value to the closest that can be played and plays that one. > * keyboard (this is separate from the keypad and is PS/2 based I > believe) I went to some length when doing the matrix and PS/2 drivers to make sure they returned sensible (Linux friendly) keycodes so after insmodding ams_keyb_mod.o you should just find that both matrix and PS/2 generate "sensible" characters to the terminal. I even arranged for PS/2 stop to generate the mush more useful [TAB] character. > * camera (some code in the 2.6 OMAP tree already, source in > the Amstrad > tree too) Yup it's supported by v4l2 Cliff This e-mail and any attachments are confidential and intended exclusively for the addressee. If you are not the intended recipient please delete it from your system and notify the sender immediately. This message is attributed to the sender and may not necessarily reflect the views of Amstrad Plc or its subsidiaries. For further information on Amstrad Plc please visit our website: www.amstrad.com Amstrad Plc. Brentwood House 169 Kings Road Brentwood Essex CM14 4EF Registered in England : No. 955321

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RE: [E3-hacking] E3 u-boot & Linux
by George Sanders 22 Feb '06

22 Feb '06

Just a question.. probably stupid... but while you're doing all this does it still work as a phone? Actually not stupid at all......does it?

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E3 serial connection
by David Given 22 Feb '06

22 Feb '06

Does anyone have a definitive answer as to what I need to hook up an E3 to a PC serial port? The various opinions I've seen so far are: * If you just wire it up, it may work, but you run some risk of frying the UART in the E3. * If you just wire it up, it won't work, because you need to invert the signal levels. * You can wire it up to an E2 line level converter and it will work. Which one of these, if any, is right? -- +- David Given --McQ-+ | dg(a)cowlark.com | ACRONYM: A Contrived Reduction of Nomenclature | (dg(a)tao-group.com) | Yielding Mnemonics +- www.cowlark.com --+

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e3-hacking