[coreboot] Re: Installing coreboot with SeaBIOS
Thank you very much.So, after having made clear the corresponding points do you think that the following hardware will be sufficient to flash the coreboot/SeaBIOS ROM to the chip of my ThinkPad X220 (notebook version, not tablet version):Raspberry Pi with keyboard and screenPomona or SOIC8 programming clip8 jumper wires/dupont wires that fit the clip 10 to 20 cm eachPSUs to power everythingBernd Originalnachricht Betreff: [coreboot] Re: Installing coreboot with SeaBIOSVon: Nico Huber An: bernd...@web.de,Nicholas Cc: coreboot@coreboot.orgOn 18.01.22 10:40, bernd...@web.de wrote:> "Depends on your ThinkPad model, usually yes if the clip fits the chip,> the wires fit the clip and aren't too long, and you have PSUs to power> everything.">> It's a ThinkPad X220 (notebook version, not tablet version). Let's provide that> the clip fits the chip, the wires fit the clip and I have PSUs to power everything.You're lucky. The X220 is a rather easy target.>> How long may the wires be?10 to 20cm works well. Sometimes shorter is better, but the X220shouldn't make you any trouble. So I'd rather choose cables thatdon't make handling of the clip too inconvenient.Nico___coreboot mailing list -- coreboot@coreboot.orgTo unsubscribe send an email to coreboot-le...@coreboot.org___ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
[coreboot] Re: Installing coreboot with SeaBIOS
On Tue, Jan 18, 2022 at 12:21:24PM +0100, Nico Huber wrote: > On 18.01.22 10:40, bernd...@web.de wrote: >> How long may the wires be? > > 10 to 20cm works well. Sometimes shorter is better, but the X220 > shouldn't make you any trouble. So I'd rather choose cables that don't > make handling of the clip too inconvenient. Nico is right about convenience. Still, I experienced inconsistent reads almost every time I used 20cm wires. (Yes, I checked the wires and the clip for resistivity or loose connections, etc.) I experienced almost no inconsistent reads with 10cm wires. When I shielded the 10cm wires with earthed aluminium foil, I got entirely consistent reads. Unfortunately, this is much less convenient to handle than unshielded 20cm leads. Your luck may depend on how electrically noisy your environment is. -- A: When it messes up the order in which people normally read text. Q: When is top-posting a bad thing? () ASCII ribbon campaign. Please avoid HTML emails & proprietary /\ file formats. (Why? See e.g. https://v.gd/jrmGbS ). Thank you. ___ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
[coreboot] Re: Gerrit shows a Merge Conflict (was: Re: Denverton-NS refactoring)
Thank you for your updates, Jeff. Jeff Daly wrote: > the feedback I got from Intel is that they will be moving away from > internal support for DNV coreboot. It's sad and telling to see one of the most ambitious technology companies in the world, one that routinely pushed technology limits, choose to not continue to accept responsibility and be active in our firmware community. Value is never inherent, it's what we choose to create. Kind regards //Peter ___ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
[coreboot] Re: Installing coreboot with SeaBIOS
On 18.01.22 10:40, bernd...@web.de wrote: > "Depends on your ThinkPad model, usually yes if the clip fits the chip, > the wires fit the clip and aren't too long, and you have PSUs to power > everything." > > It's a ThinkPad X220 (notebook version, not tablet version). Let's provide > that > the clip fits the chip, the wires fit the clip and I have PSUs to power > everything. You're lucky. The X220 is a rather easy target. > > How long may the wires be? 10 to 20cm works well. Sometimes shorter is better, but the X220 shouldn't make you any trouble. So I'd rather choose cables that don't make handling of the clip too inconvenient. Nico ___ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
[coreboot] Re: Installing coreboot with SeaBIOS
"Depends on your ThinkPad model, usually yes if the clip fits the chip,the wires fit the clip and aren't too long, and you have PSUs to powereverything."It's a ThinkPad X220 (notebook version, not tablet version). Let's provide that the clip fits the chip, the wires fit the clip and I have PSUs to power everything.How long may the wires be?Bernd Originalnachricht Betreff: [coreboot] Re: Installing coreboot with SeaBIOSVon: Nico Huber An: bernd...@web.de,Nicholas Cc: coreboot@coreboot.orgOn 16.01.22 18:16, bernd...@web.de wrote:> Hello Nico,>> ... "It can act as the second computer, you just need a keyboard and screen I> suppose. flashrom works well on the RPi. Usually you can just install> it with your package manager." ...>> Is a Raspberry Pi with keyboard, screen and jumper wires and a programming clip> enough hardware to flash the ROM to the chip of my ThinkPad or is anything else> necessary?Depends on your ThinkPad model, usually yes if the clip fits the chip,the wires fit the clip and aren't too long, and you have PSUs to powereverything.Nico___coreboot mailing list -- coreboot@coreboot.orgTo unsubscribe send an email to coreboot-le...@coreboot.org___ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
[coreboot] Re: Installing coreboot with SeaBIOS
Thank you. I didn't know before what PSUs (abbreviation) are but I knew what Power Supply Units are. Originalnachricht Betreff: [coreboot] Re: Installing coreboot with SeaBIOSVon: Sam Kuper An: coreboot@coreboot.orgCc: On Sun, Jan 16, 2022 at 06:43:42PM +0100, bernd...@web.de wrote:> It's a ThinkPad X220 (notebook version, not tablet version).The X200 may not be quite the same as the X220, but this guide should atleast give you *some* idea of what's involved, on the hardware side.https://libreboot.org/docs/install/x200_external.html> What are PSUs?Power Supply Units. In the case of battery-powered devices like phonesor laptops, these may also be called "chargers".PSUs for computers typically take mains voltage (220V AC, for example)and convert it to the relevant DC voltage.Your X220 probably has something like a 20V DC PSU.Most Raspberry Pis need 5V PSUs, same as most Android phones.If you use an external monitor for the Raspberry Pi, instead of SSHinginto it, then you might need a PSU for that monitor - although thesedays, most LCD monitors have internal PSUs and so just need a mainscable.I must say, if you are unsure what a PSU is, then I would recommendreading some basic electronics textbooks - and familiarising yourselfwith the dangers of using incorrect voltages or polarities, the dangersof static discharge, and the dangers of electrocution - before youattempt to do anything relatively advanced and delicate like flashingthe ROM chip of an X220. Using a PSU improperly could brick yourlaptop, start a fire, or worse.So, please take time to understand the principles well first of all.Then, after that, you would stand a better chance of doing a good job offlashing your laptop.___coreboot mailing list -- coreboot@coreboot.orgTo unsubscribe send an email to coreboot-le...@coreboot.org___ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
