Hi Zhuxu, On 24.09.26 05:46, Zhuxu Ran wrote: >> However, this doesn't work for U-Boot because it places its stack >> and heap near the top of RAM, therefore region in the top of RAM >> is not reserved. > > Hi Andrei, > > Thanks for reporting this, and sorry I missed your reply before > sending v4. > > You are right. U-Boot selects its relocation area before LMB > processes the reserved-memory regions. As a result, the top of RAM > may already be occupied by U-Boot when the coprocessor region is > reserved. > > In the next revision, I will exclude the reserved region from the > memory available to U-Boot. The Milk-V Duo 256M has a similar reserved > region at the top of RAM, so I will address and test both boards. >
Please leave it as is, I was wrong. Probably 'reserved-memory' will likely be dropped in the future. See [1]. 1 - https://lore.kernel.org/sophgo/[email protected]/ -- Best regards, Andrei Lalaev
