memory

[ali hagigat]

If the CPU wb (write back) cache is enabled for the memory range,
ramstage() is OK. But CPU can not work with UC(uncached) memory type
in Coreboot code. If i define the whole memory  un-cached right before
jumping to ramstage code ( cbfs_and_run()), CPU does not execute
C_start.S and it is actually restarted!
Any clue or idea will be much appreciated.