The machine can not work with memory over 256M, so add a checking
at startup. If the memory size exceed 256M, just stop emulation then
throw out warning about memory limitation.
Signed-off-by: Jiang Lu <lu.jiang@windriver.com> Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Jeff Polk <jeff.polk@windriver.com> Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
