[coreboot] How to test RAM beyond 640 kByte boundary

[llandre]

I have a question about the ram_check function.
All the board specific codes invoke it like this:

ram_check(0x00000000, 640 * 1024);

I had a look with JTAG debugger and indeed the RAM beyond 640 KByte 
boundary is not accessible. Why? Is it possible to enable and test all 
the RAM available?

TIA,
llandre

DAVE Electronics System House - R&D Department
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