[v2 4/6] arm: socfpga: dts: soc64: Update filename in binman node of FIT image with VAB support

[Simon Glass]

Hi Siew Chin,

On Thu, 7 Jan 2021 at 22:19, Lim, Elly Siew Chin
<elly.siew.chin.lim at intel.com> wrote:
>
> Hi Simon,
>
> > -----Original Message-----
> > From: Simon Glass <sjg at chromium.org>
> > Sent: Friday, January 8, 2021 11:24 AM
> > To: Lim, Elly Siew Chin <elly.siew.chin.lim at intel.com>
> > Cc: U-Boot Mailing List <u-boot at lists.denx.de>; Marek Vasut
> > <marex at denx.de>; Tan, Ley Foon <ley.foon.tan at intel.com>; See, Chin Liang
> > <chin.liang.see at intel.com>; Simon Goldschmidt
> > <simon.k.r.goldschmidt at gmail.com>; Chee, Tien Fong
> > <tien.fong.chee at intel.com>; Westergreen, Dalon
> > <dalon.westergreen at intel.com>; Gan, Yau Wai <yau.wai.gan at intel.com>
> > Subject: Re: [v2 4/6] arm: socfpga: dts: soc64: Update filename in binman node
> > of FIT image with VAB support
> >
> > Hi Slew Elly,
> >
> > On Thu, 7 Jan 2021 at 17:57, Lim, Elly Siew Chin <elly.siew.chin.lim at intel.com>
> > wrote:
> > >
> > > Hi Simon,
> > >
> > > > -----Original Message-----
> > > > From: Simon Glass <sjg at chromium.org>
> > > > Sent: Friday, January 8, 2021 12:22 AM
> > > > To: Lim, Elly Siew Chin <elly.siew.chin.lim at intel.com>
> > > > Cc: U-Boot Mailing List <u-boot at lists.denx.de>; Marek Vasut
> > > > <marex at denx.de>; Tan, Ley Foon <ley.foon.tan at intel.com>; See, Chin
> > > > Liang <chin.liang.see at intel.com>; Simon Goldschmidt
> > > > <simon.k.r.goldschmidt at gmail.com>; Chee, Tien Fong
> > > > <tien.fong.chee at intel.com>; Westergreen, Dalon
> > > > <dalon.westergreen at intel.com>; Gan, Yau Wai <yau.wai.gan at intel.com>
> > > > Subject: Re: [v2 4/6] arm: socfpga: dts: soc64: Update filename in
> > > > binman node of FIT image with VAB support
> > > >
> > > > Hi Siew Chin,
> > > >
> > > > On Thu, 7 Jan 2021 at 07:13, Lim, Elly Siew Chin
> > > > <elly.siew.chin.lim at intel.com>
> > > > wrote:
> > > > >
> > > > > Hi Simon,
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Simon Glass <sjg at chromium.org>
> > > > > > Sent: Thursday, January 7, 2021 8:37 PM
> > > > > > To: Lim, Elly Siew Chin <elly.siew.chin.lim at intel.com>
> > > > > > Cc: U-Boot Mailing List <u-boot at lists.denx.de>; Marek Vasut
> > > > > > <marex at denx.de>; Tan, Ley Foon <ley.foon.tan at intel.com>; See,
> > > > > > Chin Liang <chin.liang.see at intel.com>; Simon Goldschmidt
> > > > > > <simon.k.r.goldschmidt at gmail.com>; Chee, Tien Fong
> > > > > > <tien.fong.chee at intel.com>; Westergreen, Dalon
> > > > > > <dalon.westergreen at intel.com>; Gan, Yau Wai
> > > > > > <yau.wai.gan at intel.com>
> > > > > > Subject: Re: [v2 4/6] arm: socfpga: dts: soc64: Update filename
> > > > > > in binman node of FIT image with VAB support
> > > > > >
> > > > > > On Thu, 7 Jan 2021 at 03:03, Siew Chin Lim
> > > > > > <elly.siew.chin.lim at intel.com>
> > > > > > wrote:
> > > > > > >
> > > > > > > FIT image of Vendor Authentication Coot (VAB) contains signed images.
> > > > > > >
> > > > > > > Signed-off-by: Siew Chin Lim <elly.siew.chin.lim at intel.com>
> > > > > > > ---
> > > > > > >  arch/arm/dts/socfpga_soc64_fit-u-boot.dtsi | 22
> > > > > > > ++++++++++++++++++++++
> > > > > > >  1 file changed, 22 insertions(+)
> > > > > > >
> > > > > >
> > > > > > I'm not quite sure what is happening here, but consider using
> > > > > > two separate files rather than what looks like a patch over an existing
> > one.
> > > > > >
> > > > >
> > > > > There are two boot flow will use binman
> > > > > (socfpga_soc64_fit-u-boot.dtsi) to
> > > > generate u-boot.fit and kernel.fit:
> > > > >     1. socfpga_agilex_atf_defconfig (boot via ATF)
> > > > >     2. socfpga_agilex_vab_defconfig (boot via ATF with VAB
> > > > > enabled, support authentication on bl31, u-boot, Linux images)
> > > > >
> > > > > The binman node settings are the same for both flows. With VAB
> > > > > enabled, all
> > > > inputs file need to be signed before generate FIT image. We would
> > > > like to use different input file name to remind user that they need
> > > > to sign all bl31, u-boot, Linux images when using binman to generate FIT
> > image.
> > > > >
> > > > > Due to the binman node settings are identical and only the file
> > > > > name need to
> > > > be different, so we prefer to share the same
> > > > socfpga_soc64_fit-u-boot.dtsi for both flows.
> > > >
> > > > Reviewed-by: Simon Glass <sjg at chromium.org>
> > > >
> > > > OK I see.
> > > >
> > > > Who does the signing of the inputs? Is that something binman could/should
> > do?
> > >
> > > In our case, we will provide user Intel proprietary tools to sign the image, and
> > we have our signature format.
> > > User need to follow the steps and sign the Images, and call binman to convert
> > into FIT image.
> > > I think maybe it is not suitable to incorporate any external proprietary tools
> > into binman.
> >
> > Possibly, although we already have quite a few. Is the tool secret or can it be
> > downloaded from somewhere? If the latter, see how cbfstool is handled.
>
> It is licensed software.

I suggest releasing an open-source, command-line tool as has happened
with various other Intel innovations. It is hard for people to include
private binary tools in their automated build flow. If it is required
to actually boot on the device, then it will be hard for people to
incorporate the hardware in test labs.

Regards,
Simon