Hi, On Monday, 27 October 2025 at 18:19:12 Maxime Ripard <[email protected]> wrote: > On Mon, Oct 27, 2025 at 11:31:06AM -0500, Mario Limonciello wrote: > > On 10/27/25 11:28 AM, Maxime Ripard wrote: > > > On Mon, Oct 27, 2025 at 11:01:55AM -0500, Mario Limonciello wrote: > > > > On 10/27/25 7:35 AM, Thomas Zimmermann wrote: > > > > > > > - a very simple progress bar, which can be driven through > > > > > > > sysfs; > > > > > > > > > > Once you have options to control these settings from user space, you > > > > > should do it in user space entirely. As Maxime suggested, please > > > > > improve > > > > > plymouth for anything with animation. > > > > > > > > > > > > - a static image (optional). > > > > > > > > > > Board vendors often provide an image, see /sys/firmware/acpi/bgrt/. > > > > > This > > > > > is a candidate for display, or the penguin or a custom image. Please > > > > > make it configurable by Kconfig. Again, if you need policy and > > > > > heuristics for deciding what to display, you better do this in user > > > > > space. > > > > > > > > I'd actually argue that the static image from BGRT should be the > > > > preferred > > > > priority. This can make for a nice hand off to Plymouth. > > > > > > > > The (UEFI) BIOS already will show this image as soon as the GOP driver > > > > is > > > > loaded. Bootloaders like GRUB by default will avoid showing anything or > > > > will overwrite with the exact same image in the same location. This > > > > can let > > > > the kernel do the same, and then the moment Plymouth takes over it > > > > could do > > > > the same. > > > > > > And BGRT isn't typically found on embedded systems at all, so I'm not > > > sure it's a sensible default, let alone a priority. At most a possible > > > > There are certainly embedded machines using UEFI and that have a BGRT. > > Yes, indeed, hence the "typically". > > > How about "Sensible default the top of the priority list if it exists" > > How about we don't tell contributors what their priorities must be? > > Maxime >
I'm not familiar at all with BGRT, I'll study a bit about it. A build-time configuration could then let the user select: - a plain solid color - a custom static image - the penguin logo (?) - (on UEFI systems) BGRT source Thank you Regards, Francesco
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