On Thu, Sep 07, 2023 at 06:25:45PM +0800, caiyuqing...@163.com wrote: > From: caiyuqing379 <202235...@mail.sdu.edu.cn> > > SG2042 (Xuantie C920) MMU can be enabled in SV39 mode. C920 has five > customizable page properties that control whether the page is Strong > order(SO), Cacheable(C), Bufferable(B), Shareable(SH), Trustable(Sec). > This driver modifies the page table attributes to avoid exceptions > based on the memory attributes of the C920. > > Introduces a PCD variable PcdForceNoMMU to disable MMU configuration. > Currently, enabling MMU results in a timeout for reading data blocks > from the SD card. > > Signed-off-by: caiyuqing379 <202235...@mail.sdu.edu.cn> > Co-authored-by: USER0FISH <libing1...@outlook.com> > Cc: dahogn <dah...@hotmail.com> > Cc: meng-cz <mengcz1...@gmail.com> > Cc: yli147 <yong...@intel.com> > Cc: ChaiEvan <evan.c...@intel.com> > Cc: Sunil V L <suni...@ventanamicro.com> > Cc: Leif Lindholm <quic_llind...@quicinc.com> > --- Acked-by: Sunil V L <suni...@ventanamicro.com>
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