Hello Rasmus, On Thu, 9 Jul 2020 21:50:03 +0200 Rasmus Villemoes <rasmus.villem...@prevas.dk> wrote:
> > +config SPL_FS_SQUASHFS > > + bool "Support SquashFS filesystems" > > + select FS_SQUASHFS > > Is there any reason U-Boot proper must support squashfs if the SPL does? > This isn't quite specific to this patch; I see a number of 'config > SPL_FOO' that either depends on or selects FOO (e.g. SPL_FS_FAT), and I > wonder why. Well, if your Linux kernel image and Device Tree are stored in a squashfs filesystem, then U-Boot proper needs SquashFS support, right ? And that is completely independent of whether the SPL has SquashFS support to be able to load U-Boot proper (which potentially could be stored on SquashFS as well). It's very much like the FAT filesystem case: if you have U-Boot proper and your Linux kernel image in a FAT filesystem, then the SPL needs FAT filesystem support to load U-Boot proper, and U-Boot proper needs FAT filesystem support to load the Linux kernel image. Am I missing something here ? Best regards, Thomas -- Thomas Petazzoni, CTO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
