On 9/8/20 10:38 PM, Sean Anderson wrote: > On 9/8/20 10:02 PM, Rick Chen wrote: >> Hi Sean >> >>> On the K210, the prior stage bootloader does not clear IPIs. This presents >>> a problem, because U-Boot up until this point assumes (with one exception) >>> that IPIs are cleared when it starts. This series attempts to fix this in a >>> robust manner, and fix several concurrency bugs I noticed while fixing >>> these other areas. Heinrich previously submitted a patch addressing part of >>> this problem in [1]. >>> >>> [1] >>> https://patchwork.ozlabs.org/project/uboot/patch/20200811035648.3284-1-xypron.g...@gmx.de/ >>> >> >> It sounds like that the bootloader does not deal with SMP flow well >> and jump to u-boot-spl, right ? >> >> I have a question that why not try to fix the prior stage bootloader >> to clear IPIs correctly? > > Because it is a ROM :)
Err, perhaps I should clarify. When I say "prior stage bootloader," I mean that in the general sense of "anything which comes before U-Boot," and not to refer specifically to SPL or TPL. For the k210, this is something akin to the ZSBL on an fu540. --Sean
