[Skiboot] [PATCH] external/pflash: Add --mtd

Stewart Smith stewart at linux.vnet.ibm.com
Tue Feb 23 15:06:07 AEDT 2016

Cyril Bur <cyril.bur at au1.ibm.com> writes:
> The current behaviour of --bmc is to take over the flash controller. This
> flag was written for very early bring-up when the BMC stack would run
> entirely out of RAM. This is no longer the case and using --bmc on a BMC
> running out of the very flash --bmc will read is extremely likely to brick
> the system.
> It has come to light that there is some requirement to read BMC flash and
> some thinking that pflash is the appropriate tool. As AMI BMC firmware
> exposes the flash through /dev/mtd and pflash can be easily taught to read
> from MTD pflash can be upgraded to be the tool for the job.
> In order to preserve the current behavior of the --bmc a new flag --mtd
> has been introduced to have pflash access BMC flash the 'safe' way.
> Signed-off-by: Cyril Bur <cyril.bur at au1.ibm.com>

Thanks, merged to stable as of 48ab7ce095047c06191f1b06fc4704311c4dabda

Everyone updating their pflash and doing the right thing is left as an
exercise for the reader.

Stewart Smith
OPAL Architect, IBM.

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