Demo apps is the least of the worst. They also add benchmarks, make tweaks to components that are in distribution (rather than hardware support) scope, and even go ahead and define their own distributions, and then make it impossible or very difficult to separate the distro from the BSP. Oh, and all of this on top of yocto from 2014.
That's where the 'vendor from hell' moniker comes from. Alex On Thu, 5 May 2022 at 12:22, csimmonds <ch...@2net.co.uk> wrote: > > BSP is not a well defined term in embedded Linux. Back in the day, Montavista > tried to popularise the term LSP, meaning Linux Support Package but it never > caught on. These days, BSP generally means all the things you need to run a > basic system. So that's bootloader, device tree, kernel config, kernel > patches (if any), and firmware blobs. It can also include user space config > such as video codecs, opengl libraries, and systemd units to start the > respective daemons. > > SoC and SoM vendors often overload their OE BSPs with irrelevant demo apps as > well. Constant bugbear of system integrators. > > HTH, > Chris > > On 5 May 2022 10:51:39 BST, "jchludzinski via lists.yoctoproject.org" > <jchludzinski=vivaldi....@lists.yoctoproject.org> wrote: >> >> OK, let me try this: >> >> With other embedded OS's, the hardware specifics that are in the BSP are in >> the device trees in Linux. I assume the BSP's for OE Linux are rather simple? >> >> >> >> On 2022-05-05 04:47, Josef Holzmayr wrote: >>> >>> Howdy! >>> >>> Am Do., 5. Mai 2022 um 10:43 Uhr schrieb jchludzinski via >>> lists.yoctoproject.org >>> <jchludzinski=vivaldi....@lists.yoctoproject.org>: >>>> >>>> >>>> OK, let's go with that. >>>> >>>> I've watched the "Live Coding with Yocto Project #1: download and first >>>> build" youtube video. Where is the BSP built in this procedure? >>> >>> >>> The BSP that is implicitly used in that video is the generic QEMU one, >>> which comes included with poky. Technically speaking, it lives in >>> https://git.yoctoproject.org/poky/tree/meta/conf/machine and >>> https://git.yoctoproject.org/poky/tree/meta/recipes-kernel/linux/linux-yocto_5.15.bb >>> >>> A BSP can be many things, and this one is a rather small one, as >>> booting into and running linux on QEMU doesn't need patching and all >>> that, so in that case it comes pretty close to the perfect world that >>> Michael mentioned. >>> >>> Greetz, >>> Josef (who did that video, actually) >>> >>>> >>>> >>>> >>>> On 2022-05-05 03:16, Michael Opdenacker via lists.yoctoproject.org >>>> wrote: >>>>> >>>>> On 5/5/22 08:39, jchludzinski via lists.yoctoproject.org wrote: >>>>>> >>>>>> A board-support-package (BSP) is software that provides a layer of >>>>>> abstraction from the physical board specifics for the host embedded OS >>>>>> (e.g., VXworks). >>>>>> >>>>>> I believe the device tree files (*.dts, *dtsi) in OE Linux provide the >>>>>> same function. It allows to OE kernel code to be independent of device >>>>>> specifics. >>>>> >>>>> >>>>> >>>>> The Device Tree files are just descriptions of the hardware. In a >>>>> perfect world, you could indeed use the same mainline kernel to support >>>>> all possible devices. However, that kernel would be unnecessarily big >>>>> for your custom system. You most probably want to customize its >>>>> configuration, and may also need custom kernel drivers and patches. >>>>> There's also the need for a bootloader compiled for your platform. >>>>> >>>>> That's why we need BSPs :-) >>>>> >>>>> Cheers, >>>>> Michael. >>>>> >>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> > > >
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#57005): https://lists.yoctoproject.org/g/yocto/message/57005 Mute This Topic: https://lists.yoctoproject.org/mt/90904726/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
