On 6/3/26 12:37 PM, Ilias Apalodimas wrote: Hello Ilias,
I think the LMB configuration should in fact be board (or SoC) specific, because RPi has problems already at 1 GiB, other hardware might have problems at 4 GiB, etc. But this config option is the generic "make it work somehow" flip switch.diff --git a/lib/Kconfig b/lib/Kconfig index 77ebc79e1db..29911068a69 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -1295,6 +1295,14 @@ config SPL_LMB_ARCH_MEM_MAP memory map. Enable this config in such scenarios which allow architectures and boards to define their own memory map. +config LMB_LIMIT_DMA_BELOW_4GThis seems the right idea for now, but is it really 4G or ram_top?
