x86: fsp: Support a warning message when DRAM init is slow
With DDR4, Intel SOCs take quite a long time to init their memory. During this time, if the user is watching, it looks like SPL has hung. Add a message in this case. This works by adding a return code to fspm_update_config() that indicates whether MRC data was found and a new property to the device tree. Also add one more debug message while starting. Signed-off-by: NSimon Glass <sjg@chromium.org> Reviewed-by: NBin Meng <bmeng.cn@gmail.com> Reviewed-by: NWolfgang Wallner <wolfgang.wallner@br-automation.com> Tested-by: NWolfgang Wallner <wolfgang.wallner@br-automation.com>
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