e3-hacking February 2006

e3-hacking@earth.li

23 participants
32 discussions

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 u-boot & Linux
by Mark Underwood 22 Feb '06

22 Feb '06

I have managed to not only get u-boot running (now with u-boot setting up the UART baud rate) but have also managed to get a 2.6.15 kernel with omap patchs to boot :-). I'm still having a problem getting the startup scripts to give me a login, but once I've fixed that problem I will make my modifications to u-boot and the kernel available (need to find somewhere to put them first) and then start working on getting USB up and running (the probe of the OHCI is failing for some reason). Mark ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com

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RE: e3-hacking Digest, Vol 9, Issue 9
by Matt Holmes 22 Feb '06

22 Feb '06

Anyone now how to use this as just a phone, without all the additional extortionate prices? -----Original Message----- From: e3-hacking-bounces(a)earth.li [mailto:e3-hacking-bounces@earth.li] On Behalf Of e3-hacking-request(a)earth.li Sent: 22 February 2006 12:00 To: e3-hacking(a)earth.li Subject: e3-hacking Digest, Vol 9, Issue 9 Send e3-hacking mailing list submissions to e3-hacking(a)earth.li To subscribe or unsubscribe via the World Wide Web, visit http://www.earth.li/cgi-bin/mailman/listinfo/e3-hacking or, via email, send a message with subject or body 'help' to e3-hacking-request(a)earth.li You can reach the person managing the list at e3-hacking-owner(a)earth.li When replying, please edit your Subject line so it is more specific than "Re: Contents of e3-hacking digest..." Today's Topics: 1. E3 rootfs problems (Tolly Nelson) 2. E3 serial connection (David Given) 3. Re: E3 serial connection (Jonathan McDowell) 4. Re: E3 serial connection (J. Snell) 5. Re: E3 rootfs problems (Mark Underwood) ---------------------------------------------------------------------- Message: 1 Date: Tue, 21 Feb 2006 14:21:06 +0000 From: Tolly Nelson <bjn377(a)bham.ac.uk> Subject: [E3-hacking] E3 rootfs problems To: e3-hacking(a)earth.li Message-ID: <43FB21D2.7020609(a)bham.ac.uk> Content-Type: text/plain; charset=ISO-8859-1 Hi all, I've been hacking my E3 over the last few days, but I can't seem to get my rootfs image to work... My toolchain seems to work, as I can compile u-boot and the kernel with no problems, and they both boot, but the root just doesn't want to execute - i.e it stops after : "... RAMDISK: Compressed image found at block 0 VFS: Mounted root (ext2 filesystem). Freeing init memory: 100K" I've checked my inittab, and the relevant line is there: "::respawn:/bin/ash" I've mounted the ext2 image locally, and 'file busybox' says: "busybox: setuid ELF 32-bit LSB executable, ARM, version 1 (ARM), dynamically linked (uses shared libs), stripped" So I know that its compiled correctly. (unless I require static linking) I'm using the standard linux.pbl pbltool script, so maybe I'm getting the memory locations wrong (my rootfs and kernel are slightly different sizes) When using the stock rootfs, the system works fine with my u-boot and kernel. Any help would be appreciated, Tolly ------------------------------ Message: 2 Date: Tue, 21 Feb 2006 18:05:13 +0000 From: David Given <dg(a)cowlark.com> Subject: [E3-hacking] E3 serial connection To: e3-hacking(a)earth.li Message-ID: <200602211805.13270.dg(a)cowlark.com> Content-Type: text/plain; charset="utf-8" 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 rootfs problems
by Tolly Nelson 21 Feb '06

21 Feb '06

Hi all, I've been hacking my E3 over the last few days, but I can't seem to get my rootfs image to work... My toolchain seems to work, as I can compile u-boot and the kernel with no problems, and they both boot, but the root just doesn't want to execute - i.e it stops after : "... RAMDISK: Compressed image found at block 0 VFS: Mounted root (ext2 filesystem). Freeing init memory: 100K" I've checked my inittab, and the relevant line is there: "::respawn:/bin/ash" I've mounted the ext2 image locally, and 'file busybox' says: "busybox: setuid ELF 32-bit LSB executable, ARM, version 1 (ARM), dynamically linked (uses shared libs), stripped" So I know that its compiled correctly. (unless I require static linking) I'm using the standard linux.pbl pbltool script, so maybe I'm getting the memory locations wrong (my rootfs and kernel are slightly different sizes) When using the stock rootfs, the system works fine with my u-boot and kernel. Any help would be appreciated, Tolly

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Linux 2.6 & USB _almost_ works
by Mark Underwood 21 Feb '06

21 Feb '06

I have been hacking around with the 2.6.15 kernel and now have got the USB host to successfully register. It detects a USB device that I plug into it, but then fails to get the interrupt (the kernel prints out a time out error message). Looking at the proc enteries from the 2.4 kernel (from the website) the interrupt number is the same so I guess that there is some init code missing. Please could someone boot their E3, plug & unplug a USB device and do 'cat /proc/interrupts' and confirm that the usb-ohci interrupt has seen some interrupts. Many thanks, Mark ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

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Re: Re: [E3-hacking] Missing 16k page
by Matt Callow 20 Feb '06

20 Feb '06

> > From: "Matt Thorpe" <ciipher_uk(a)hotmail.com> > Date: 2006/02/20 Mon PM 06:29:26 GMT > To: e3-hacking(a)earth.li > Subject: Re: [E3-hacking] Missing 16k page > > Yep, it erased 2 blocks for us and another chap too. Luckily we had a > second virgin E3 to hand ;) > Glad it's not just me! Thought I was going mad... Modified the params and now I have shell access :-) Didn't need to worry about any checksums either.

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Re: [E3-hacking] Missing 16k page
by Matt Thorpe 20 Feb '06

20 Feb '06

Yep, it erased 2 blocks for us and another chap too. Luckily we had a second virgin E3 to hand ;) >From: Matt Callow <mc-spam(a)tesco.net> >Reply-To: Discussion of the Amstrad E3 emailer >hardware/software<e3-hacking(a)earth.li> >To: <e3-hacking(a)earth.li> >Subject: Re: [E3-hacking] Missing 16k page >Date: Mon, 20 Feb 2006 18:27:43 +0000 > > > > > From: "Matt Thorpe" <ciipher_uk(a)hotmail.com> > > Date: 2006/02/20 Mon PM 04:17:09 GMT > > To: e3-hacking(a)earth.li > > Subject: [E3-hacking] Missing 16k page > > > > Here is the second 16k page that people seem to be deleting, it is from >a E3 > > build 1311. Hope it's OK to post this here! > > >Thanks that's great. I have my e3 booting again :-) >It looks like pbltool erases 2 blocks of flash when asked to erase 1. Has >anyone else seen this? >Now to try and get a shell prompt again... > >Matt > > > >_______________________________________________ >e3-hacking mailing list >e3-hacking(a)earth.li >http://www.earth.li/cgi-bin/mailman/listinfo/e3-hacking

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Re: [E3-hacking] Missing 16k page
by Matt Callow 20 Feb '06

20 Feb '06

> > From: "Matt Thorpe" <ciipher_uk(a)hotmail.com> > Date: 2006/02/20 Mon PM 04:17:09 GMT > To: e3-hacking(a)earth.li > Subject: [E3-hacking] Missing 16k page > > Here is the second 16k page that people seem to be deleting, it is from a E3 > build 1311. Hope it's OK to post this here! > Thanks that's great. I have my e3 booting again :-) It looks like pbltool erases 2 blocks of flash when asked to erase 1. Has anyone else seen this? Now to try and get a shell prompt again... Matt

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e3-hacking February 2006