> On some systems, not all RAM may be usable within U-Boot. Maybe the > memory maps are incomplete, maybe it's used as workaround for broken > DMA. But whatever the reason may be, a platform can say that it does > not wish to have its RAM accessed above a certain address by defining > board_get_usable_ram_top(). > > In the efi_loader world, we ignored that hint, mostly because very few > boards actually have real restrictions around this. > > So let's honor the board's wish to not access high addresses during > boot time. The best way to do so is by indicating the respective pages > as "allocated by firmware". That way, Operating Systems will still > use the pages after boot, but before boot no allocation will use them. > > Reported-by: Baruch Siach <bar...@tkos.co.il> > Signed-off-by: Alexander Graf <ag...@suse.de> > Reviewed-by: Stephen Warren <swar...@nvidia.com> > Reviewed-by: Heinrich Schuchardt <xypron.g...@gmx.de>
Thanks, applied to efi-next Alex _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
