Dear "Mari Ivan-AIM018",
In message <[EMAIL PROTECTED]> you wrote:
>
> We are using ATCA equipment and those boards have redundant boot banks
> and they are managed by IPMI controllers.
> So while you are you are running Linux, you can change the boot banks
> for next restart through set boot options IPMI command.
> The problem arises when we write the U-Boot env variables using
> fw_setenv and immediately send the IPMI command to switch the boot bank.
> In this situation the variables are not written immediately by the
> fw_setenv application but buffered to be written later when the OS
> decides it is the time to write them to the mtd driver. But it is too
> late because the IPMI command was quickly executed and the boot bank has
> changed. This could yield to a corrupted flash boot bank.
You mean, the IPMI actions are not synchronized with the Linux
kernel's MTD layer? Then that's a serious bug in the IPMI
implementation that needs to be fixed there.
Your suggested patch may serve as a temporary workaround for you, but
it makes no sense in the general case.
I really recommend you to get the interface to the MTD layer fixed,
because lots of other problems can happen in your system.
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: [EMAIL PROTECTED]
Mandrell: "You know what I think?"
Doctor: "Ah, ah that's a catch question. With a brain your size you
don't think, right?"
- Dr. Who
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