On Tue, Dec 17, 2019 at 9:29 PM CS20 CTCchien <CTCCHIEN@nuvoton.com> wrote:

Hi,

=C2=A0

Yes, I just echo string to device node to bi= nd and unbind.

c0000000 is the FIU address in my system<= /u>

=C2=A0

B.R.

Medad

From: Oskar Senft <osk@google.com>
Sent: Wednesday, December 18, 2019 10:23 AM
To: CS20 CTCchien <CTCCHIEN@nuvoton.com>
Cc: Vijay Khemka <vijaykhemka@fb.com>; OpenBMC Maillist <openbmc@lists.ozlabs.org&g= t;
Subject: Re: Bios upgrade

=C2=A0

Hi

=C2=A0

How do you do the rescan? That = was the part I was curious about :-D

=C2=A0

Is it this (= https://github.com/Nuvoton-Israel/openbmc/blob/runbmc/meta-phosphor/nuvoton= -layer/recipes-phosphor/ipmi/phosphor-ipmi-flash/bios-update.sh#L38)?

cd /sys/bus/platform/devices/c0= 000000.fiu/driver

echo -n "c0000000.fiu"= ; > unbind

echo -n "c0000000.fiu"= ; > bind

=C2=A0

If so, what's the magic &qu= ot;c0000000.fiu"?

=C2=A0

Thanks

Oskar

=C2=A0

On Tue, Dec 17, 2019 at 7:33 PM= CS20 CTCchien <CTCCHIEN@nuvoton.com> wrote:

Hi,

=C2=A0=

We have a gpio which could control the MUX

When I want to do BIOS upgrade, I will shut = down the host and operate the gpio, and rescan, then BIOS flash will be accessible from BMC now.=

=C2=A0=

B.R.

Medad<= /u>

=C2=A0=

From: Oskar Senft <osk@google.c= om>
Sent: Wednesday, December 18, 2019 4:57 AM
To: CS20 CTCchien <CTCCHIEN@nuvoton.com>
Cc: Vijay Khemka <vijaykhemka@fb.com>; OpenBMC Maillist <openbmc@lists.ozlabs.org&g= t;
Subject: Re: Bios upgrade<= /span>

=C2=A0

Hi

=C2=A0

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 does= n'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 SP= I flash chips at runtime?

=C2=A0

Thanks

Oskar.

=C2=A0

On Tue, Dec 17, 2019 at 12:38 A= M CS20 CTCchien <CTCCHIEN@nuvoton.com> wrote:

= Hi Vijay,

= =C2=A0

= 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/me= ta-phosphor/nuvoton-layer/recipes-phosphor/ipmi.

= =C2=A0

= You need to prepare a BIOS image and a signature file for this BIOS<= span lang=3D"EN-US">

= After you execute the command on host, ipmid in BMC will launch a script to= upgrade BIOS.

= =C2=A0

= For example,

= sudo=C2=A0 ./burn_my_bmc --command update --interface ipmipci --image BIOS.= img --sig BIOS.img.sig --type static<= /u>

= =C2=A0

= =C2=A0

= B.R.

= Medad

Fro= m: Vijay Khemka &l= t;vijaykhemka@fb.co= m>
Sent: Tuesday, December 17, 2019 8:16 AM
To: OpenBMC Maillist <openbmc@lists.ozlabs.org>
Subject: Bios upgrade

=C2=A0

Hi,

I am l= ooking for bios upgrade from BMC. I looked at phosphor-ipmi-flash but

couldn= =E2=80=99t figur= e 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 an= yone please give steps to use any existing kernel driver or user space

Applic= ation for upgrading host firmware.

=C2=A0=

Regard= s

-Vijay=

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