e3-hacking

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395 discussions

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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Missing 16k page
by Matt Thorpe 20 Feb '06

20 Feb '06

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!

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PARMS checksum??
by Matt Thorpe 20 Feb '06

20 Feb '06

Where are people finding this checksum for the PARMS block anyway? When we put the /bin/sh/ modification on we couldn't find it, but it works just the same!

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RE: [E3-hacking] e3 won't boot
by Matt Callow 20 Feb '06

20 Feb '06

> > From: Cliff Lawson <clawson(a)amstrad.com> > Date: 2006/02/20 Mon AM 09:24:38 GMT > To: 'Discussion of the Amstrad E3 emailer hardware/software' > <e3-hacking(a)earth.li> > Subject: RE: [E3-hacking] e3 won't boot > > Umm, silly question but did your "<modify params in block2.mod>" involve > fixing up the CRC? If it didn't the PBL won't recognise it as valid and it > looks like you erased the other MEM/PARMS/LDR from the flash so it has > nothing to fallback to. > > Cliff There is a chance that I got the checksum wrong, but I thought that replacing the original block would get me back to a booting machine. But, on further investigation, it seems like I've erased the next flash block as well! Scanning from 0x00404000 I find 3 PBL blocks: MEM (length 0x100) PARAMS (length 0x184) LDR (length 0x6648) So that means the LDR goes into the next flash block, but on my machine 0x00408000 to 0x0040BFFF has been erased. Any chance that someone could send me an image of the 16k that I seem to have erased? Matt > > > -----Original Message----- > > From: Matt Callow [mailto:mc-spam@tesco.net] > > > > ./pbltool readflash 0x4000 0x400 block2 > > > > cp block2 block2.mod > > > > <modify params in block2.mod> > > > > > 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 > > > > _______________________________________________ > e3-hacking mailing list > e3-hacking(a)earth.li > http://www.earth.li/cgi-bin/mailman/listinfo/e3-hacking >

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