Sis 630 memory init

[zhu shi song]

I have met two problems when using V1 linuxbios for winfast 6300.

(1) For winfast 6300, it is not compatible with some SDRAM.

(2) For ECS P6STMT board which uses sis630et chipset, IPL hangs when ipl use stack to read Linuxbios from DOC.

The two problems are all related to memory init.  Maybe the current memory init procedures in freebios V1 is not complete.  Who know how to init SDRAM correctly, so it can work for more SDRAM and more boards?

zhu

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