[U-Boot] POST Memory Test Problem

Wolfgang Denk wd at denx.de
Mon Dec 22 17:28:55 CET 2014


Dear Allan,

In message <CAFxMsXy9jXw9k_LgBbc7Hen66iYvk0kTfOAmb41wV4NzK7vw+w at mail.gmail.com> you wrote:
> 
> Im using a Freescale QorIQ P1020 custom board, booting from serial NOR
> flash (SPI), U-Boot 2014.10.
...
> Im afraid that this test is hiding another errors, because its testing
> the whole DDR range. And in post/tests.c the flag POST_ROM is set, but

I don't think so.  I thiunk you're just misusing the test.

> booting from NOR flash SPI we are in DDR since the beginning.

In case it is not obvious: you cannot run a memory test on the memory
you are running from.  You must make sure to run the POST memory test
_before_ relocation to RAM.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
It's hard to make a program foolproof because fools are so ingenious.


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