[U-Boot] [PATCH v7 3/6] arm: socfpga: Enable FPGA driver on SPL

[Chee, Tien Fong]

On Isn, 2017-06-05 at 14:25 +0200, Marek Vasut wrote:
> On 06/05/2017 02:23 PM, Chee, Tien Fong wrote:
> > 
> > On Isn, 2017-06-05 at 14:15 +0200, Marek Vasut wrote:
> > > 
> > > On 06/05/2017 02:11 PM, Chee, Tien Fong wrote:
> > > > 
> > > > 
> > > > On Isn, 2017-06-05 at 14:08 +0200, Marek Vasut wrote:
> > > > > 
> > > > > 
> > > > > On 06/05/2017 02:06 PM, Chee, Tien Fong wrote:
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > On Isn, 2017-06-05 at 13:24 +0200, Marek Vasut wrote:
> > > > > > > 
> > > > > > > 
> > > > > > > 
> > > > > > > On 06/05/2017 06:02 AM, Chee, Tien Fong wrote:
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> > > > > > > > 
> > > > > > > > 
> > > > > > > > On Isn, 2017-06-05 at 11:32 +0800, Chee, Tien Fong
> > > > > > > > wrote:
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> > > > > > > > > On Sab, 2017-06-03 at 13:27 +0200, Marek Vasut wrote:
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> > > > > > > > > > On 05/29/2017 06:00 AM, tien.fong.chee at intel.com
> > > > > > > > > > wrote:
> > > > > > > > > > > 
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> > > > > > > > > > > 
> > > > > > > > > > > From: Tien Fong Chee <tien.fong.chee at intel.com>
> > > > > > > > > > > 
> > > > > > > > > > > This patch is for enabling the FPGA driver
> > > > > > > > > > > support on
> > > > > > > > > > > SPL.
> > > > > > > > > > > 
> > > > > > > > > > > Signed-off-by: Tien Fong Chee <tien.fong.chee at int
> > > > > > > > > > > el.c
> > > > > > > > > > > om>
> > > > > > > > > > > ---
> > > > > > > > > > >  include/configs/socfpga_common.h | 1 +
> > > > > > > > > > >  1 file changed, 1 insertion(+)
> > > > > > > > > > > 
> > > > > > > > > > > diff --git a/include/configs/socfpga_common.h
> > > > > > > > > > > b/include/configs/socfpga_common.h
> > > > > > > > > > > index da7e4ad..e74e7eb 100644
> > > > > > > > > > > --- a/include/configs/socfpga_common.h
> > > > > > > > > > > +++ b/include/configs/socfpga_common.h
> > > > > > > > > > > @@ -110,6 +110,7 @@
> > > > > > > > > > >  #define CONFIG_FPGA
> > > > > > > > > > >  #define CONFIG_FPGA_ALTERA
> > > > > > > > > > >  #define CONFIG_FPGA_SOCFPGA
> > > > > > > > > > > +#define CONFIG_SPL_FPGA_SUPPORT
> > > > > > > > > > This should be Kconfig symbol selected in board
> > > > > > > > > > config.
> > > > > > > > > > Why
> > > > > > > > > > is
> > > > > > > > > > it
> > > > > > > > > > not
> > > > > > > > > > Kconfig symbol ?
> > > > > > > > > > 
> > > > > > > > Ahha....ijust recalled there is a very important reason
> > > > > > > > i
> > > > > > > > did
> > > > > > > > this
> > > > > > > > because CONFIG_CMD_FPGA which is wrapping all these
> > > > > > > > FPGA
> > > > > > > > related
> > > > > > > > CONFIG
> > > > > > > > is not part of kconfig.
> > > > > > > it is, so this is nonsense, try git grep next time ...
> > > > > > > cmd/Kconfig:config CMD_FPGA
> > > > > > > 
> > > > > > > > 
> > > > > > > > 
> > > > > > > > 
> > > > > > > > 
> > > > > > > > During the build, kconfig and Macro #define are
> > > > > > > > in two different phase/order, so we might having build
> > > > > > > > issue
> > > > > > > > during
> > > > > > > > kconfig build(1st phase) when some Macro #define which
> > > > > > > > is
> > > > > > > > 2nd
> > > > > > > > phase
> > > > > > > > are
> > > > > > > > required.
> > > > > > > I don't understand this, but I think this is bogus.
> > > > > > > 
> > > > > > Okay. For example, CONFIG_A in Kconfig depend on CONFIG_B
> > > > > > which
> > > > > > is
> > > > > > defined in socfpga_common.h. When SPL build, CONFIG_A would
> > > > > > not
> > > > > > be
> > > > > > set
> > > > > > to one even CONFIG_B is defined to one in header file,
> > > > > > because
> > > > > > at
> > > > > > that
> > > > > > moment build, CONFIG_B is not detected, but header file
> > > > > > only
> > > > > > get
> > > > > > build
> > > > > > after Kconfig build done.
> > > > > Then convert whatever is missing to Kconfig and it's done ?
> > > > > 
> > > > Yeah, i will send out immediately after this patch set.
> > > > 
> > > Please do things in sensible order ...
> > > 
> > I thought we already reach agreement that specific patch for
> > converting
> > all to kconfig would be after this patch set, since it needs more
> > time
> > for the tool to execute all the convertion, right?
> SPL_FPGA_SUPPORT is Kconfig'd already, so do not add it into
> include/configs/*h . If there is a bug, fix it.
> 
I don't think that is bug, this is how the build order is designed,
Kconfig is build 1st, then only compiling the header/C files. So i
would suggest all related/dependency CONFIG put in one place,either all
in Kconfig or in header file. 

So, i suggest to submit a seprate patch for converting all to Kconfig
after this patchset, or i can pull this patch into this patchset.

If you prefer adding SPL_FPGA_SUPPORT into this patchset, i need to
rerun the tool for this macro, because a lot defconfigs require FPGA
feature enabled in SPL build. I also need to run all defconfigs
compilation and make sure above example is not hit, otherwise FPGA
driver could be failed in the build.

What do you think?

Thanks.