Bios upgrade

[Oskar Senft]

Hi

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

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/c0000000.fiu/driver
echo -n "c0000000.fiu" > unbind
echo -n "c0000000.fiu" > bind


If so, what's the magic "c0000000.fiu"?

Thanks
Oskar

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

> Hi,
>
>
>
> 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.
>
>
>
> B.R.
>
> Medad
>
>
>
> *From:* Oskar Senft <osk at google.com>
> *Sent:* Wednesday, December 18, 2019 4:57 AM
> *To:* CS20 CTCchien <CTCCHIEN at nuvoton.com>
> *Cc:* Vijay Khemka <vijaykhemka at fb.com>; OpenBMC Maillist <
> openbmc at lists.ozlabs.org>
> *Subject:* Re: Bios upgrade
>
>
>
> 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
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_Nuvoton-2DIsrael_openbmc_tree_runbmc_meta-2Dphosphor_nuvoton-2Dlayer_recipes-2Dphosphor_ipmi&d=DwMFaQ&c=ue8mO8zgC4VZ4q_aNVKt8G9MC01UFDmisvMR1k-EoDM&r=HqT4ScbSY2YNT4sFBmDErzNgMDeKfQmTiR08x2qtobg&m=7mxCYr2Rn71qEomdvLXWG3GkbwRmfjiYt-8PEs6Vr4M&s=VQpRXaKHfEykzUskGOobziNpXXSFdsD5KBmZLYGys-U&e=>
> .
>
>
>
> 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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