Bios upgrade

[Oskar Senft]

Hi

How did you configure the BIOS flash device? I assume via the device tree?
I haven't tested this in a while, but I seem to remember that if the BIOS
SPI flash is not accessible Linux doesn't "detect" the device and doesn't
create the MTD, i.e. it's not accessible from the BMC. This can be the case
if the mux between BMC, PCH and BIOS SPI flash) is configured to connect
the SPI flash to the BMC at the time the BMC boots. Or is there a way to
make BMC's Linux "rescan" for SPI flash chips at runtime?

Thanks
Oskar.

On Tue, Dec 17, 2019 at 12:38 AM CS20 CTCchien <CTCCHIEN at nuvoton.com> wrote:

> Hi Vijay,
>
>
>
> You could build a host daemon and a ipmi library on BMC from
> phosphor-ipmi-flash
>
> Here is the link I implement BIOS upgrade on my system
>
>
> https://github.com/Nuvoton-Israel/openbmc/tree/runbmc/meta-phosphor/nuvoton-layer/recipes-phosphor/ipmi
> .
>
>
>
> You need to prepare a BIOS image and a signature file for this BIOS
>
> After you execute the command on host, ipmid in BMC will launch a script
> to upgrade BIOS.
>
>
>
> For example,
>
> sudo  ./burn_my_bmc --command update --interface ipmipci --image BIOS.img
> --sig BIOS.img.sig --type static
>
>
>
>
>
> B.R.
>
> Medad
>
> *From:* Vijay Khemka <vijaykhemka at fb.com>
> *Sent:* Tuesday, December 17, 2019 8:16 AM
> *To:* OpenBMC Maillist <openbmc at lists.ozlabs.org>
> *Subject:* Bios upgrade
>
>
>
> Hi,
>
> I am looking for bios upgrade from BMC. I looked at phosphor-ipmi-flash
> but
>
> couldn’t figure out how to use this for bios upgrade. I checked few old
> mails
>
> where oskar was asking about using user space application instead of
> kernel.
>
> Can anyone please give steps to use any existing kernel driver or user
> space
>
> Application for upgrading host firmware.
>
>
>
> Regards
>
> -Vijay
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