[U-Boot] post_memory_tests

Hello,

I need to run memory RAM test on an ARM based platform. I saw that there is the POST tests framework in u-boot and I had some questions about it.

What is the purpose of the _POST_WORD_ADDR variable in include/post.h? How should I define the value of that variable?

Also, I try to run the post_memory_test in normal mode, before relocation ( the test verifies only small 4Kb regions of RAM around each 1Mb boundary). That seems to work. But when I tried to change the value of the region from 4K to 8K, it does not work anymore. Does anyone have a clue on that?

Thanks for your help

chirong