Re: [yocto] one way hash analogy of yocto
On 2020-07-31 08:53, Quentin Schulz wrote: I do not know if there is such a mechanism for tasks, but the bitbake-layers should help you get started in your quest of overridden tasks. Also, I'm not sure it matters much where the tasks are overridden? Just override them again with your own bbappend (especially if it's a layer you don't own (read upstream or provided by vendor)). Thanks for the prompt followup. Yeah, the two comments above are related in my nightmare so I'll address both of them together. vendor has layers that I am NOT modifying, and unfortunately I'm not 100% sure that they didn't modify poky or meta-oe in what they shipped to me. Just haven't had time to download and compare those layers to yocto official sources. I really do need to be able to inspect what they've done in their BSP layer to be able to effectively override or modify it though. Things very easily break when I attempt to make changes. Their as-delivered image builder creates an executable and the only way to update their board is to boot into linux on the board and run that executable (on the board) to update the secondary flash, then boot into the secondary flash and update the primary...which takes forever on QSPI NOR. Yeah, they disabled the jtag interface so you HAVE to be in a boot-able linux image on the board to update it. My development model is to reconfigure to use nfsroot while developing and configuring and only update the flash for relatively solid release to be tested. but thanks...will investigate the commands you mentioned. I really do need a quick way of seeing the authoritative version of a task though. -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#50150): https://lists.yoctoproject.org/g/yocto/message/50150 Mute This Topic: https://lists.yoctoproject.org/mt/75906054/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [yocto] one way hash analogy of yocto
On Fri, Jul 31, 2020 at 08:45:17AM -0400, Rob Prowel wrote: > What I really need is information about introspection or the ability to > query an existing yocto distro to return data about features included and > more to the point, to understand EXACTLY where recipes or classes are > overridden or appended. You can only do so much with recursive grep and > find scripts. Based on what I've seen so far, it seems that capability is > lacking in yocto. > > In essence I have what is like a one way hash ABCDEFG-->X and I have X but > cannot fully figure out the whole input that generated it. > > An example would be an overridden task method like > > do_something > > I need a quick way to determine the highest priority level that task was > overridden or appended in for a given recipe. > > a command like "bitbake -describe -c do_something my-recipe" bitbake -e my-recipe ? Maybe grep for the variable of interest? > and it should also be possible to query this kind of information for > variables and not just methods or tasks. > > Do these tools exist or am I looking at parsing megabytes of verbose build > data and tracing output to find what I'm looking for? > > and no, I didn't create the distro...I'm an end user customer who was given > an undocumented distro with quazi-proprietary BSP layers in it that not only > describe our specific product purchased, but the vendor's others products as > well, which complicates matters. > > Thoughts? When adding layers, only way to be sure is to actually review the layers and their bbappends. I tend to BBMASK everything out which I haven't checked at least on BSP layer side. Open source layers from yocto community are better. Cheers, -Mikko > > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#50149): https://lists.yoctoproject.org/g/yocto/message/50149 Mute This Topic: https://lists.yoctoproject.org/mt/75906054/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [yocto] one way hash analogy of yocto
Hi Robm On Fri, Jul 31, 2020 at 08:45:17AM -0400, Rob Prowel wrote: > What I really need is information about introspection or the ability to > query an existing yocto distro to return data about features included and > more to the point, to understand EXACTLY where recipes or classes are > overridden or appended. You can only do so much with recursive grep and > find scripts. Based on what I've seen so far, it seems that capability is > lacking in yocto. > > In essence I have what is like a one way hash ABCDEFG-->X and I have X but > cannot fully figure out the whole input that generated it. > > An example would be an overridden task method like > > do_something > > I need a quick way to determine the highest priority level that task was > overridden or appended in for a given recipe. > > a command like "bitbake -describe -c do_something my-recipe" > > and it should also be possible to query this kind of information for > variables and not just methods or tasks. > > Do these tools exist or am I looking at parsing megabytes of verbose build > data and tracing output to find what I'm looking for? > For location of bbappends and recipes, etc.: bitbake-layers show-appends bitbake-layers show-recipes For variables: bitbake -e | more and find the line starting with the variable you're looking for. From there, look the lines just before and you'll have the history of how the variables was constructed. bitbake -e | awk '/^# \$FOOBAR \[/,/^FOOBAR/' might do it for you. Not tested by me so can't attest. (source: https://theyoctojester.info/session_14/main.html) I do not know if there is such a mechanism for tasks, but the bitbake-layers should help you get started in your quest of overridden tasks. Also, I'm not sure it matters much where the tasks are overridden? Just override them again with your own bbappend (especially if it's a layer you don't own (read upstream or provided by vendor)). Quentin -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#50148): https://lists.yoctoproject.org/g/yocto/message/50148 Mute This Topic: https://lists.yoctoproject.org/mt/75906054/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
