[PATCH] microblaze: Rework TARGET_MICROBLAZE_GENERIC implementation

[Tom Rini]

On Tue, Mar 17, 2026 at 04:51:12PM +0100, Michal Simek wrote:
> 
> 
> On 3/17/26 16:41, Tom Rini wrote:
> > On Tue, Mar 17, 2026 at 04:35:30PM +0100, Michal Simek wrote:
> > > 
> > > 
> > > On 3/17/26 15:49, Tom Rini wrote:
> > > > On Tue, Mar 17, 2026 at 01:06:15PM +0100, Michal Simek wrote:
> > > > > 
> > > > > 
> > > > > On 3/17/26 02:24, Tom Rini wrote:
> > > > > > As exposed by "make randconfig", some symbols such as
> > > > > > XILINX_MICROBLAZE0_PVR can be set without TARGET_MICROBLAZE_GENERIC but
> > > > > > have a transitive dependency on it. The easiest path of resolution here
> > > > > > is that since there is only one valid microblaze "board", rework that
> > > > > > symbol to be non-optional.
> > > > > > 
> > > > > > Signed-off-by: Tom Rini <trini at konsulko.com>
> > > > > > ---
> > > > > > Cc: Michal Simek <michal.simek at amd.com>
> > > > > > ---
> > > > > >     arch/microblaze/Kconfig | 10 +++-------
> > > > > >     1 file changed, 3 insertions(+), 7 deletions(-)
> > > > > > 
> > > > > > diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
> > > > > > index 4261e5009fdc..16c55ddfd95c 100644
> > > > > > --- a/arch/microblaze/Kconfig
> > > > > > +++ b/arch/microblaze/Kconfig
> > > > > > @@ -7,12 +7,8 @@ config SYS_ARCH
> > > > > >     config STATIC_RELA
> > > > > >     	def_bool y
> > > > > > -choice
> > > > > > -	prompt "Target select"
> > > > > > -	optional
> > > > > > -
> > > > > >     config TARGET_MICROBLAZE_GENERIC
> > > > > > -	bool "Support microblaze-generic"
> > > > > > +	def_bool y
> > > > > >     	select BOARD_LATE_INIT
> > > > > >     	select DM
> > > > > >     	select DM_SERIAL
> > > > > > @@ -26,8 +22,8 @@ config TARGET_MICROBLAZE_GENERIC
> > > > > >     	select MTD
> > > > > >     	select SPI
> > > > > >     	imply CMD_DM
> > > > > > -
> > > > > > -endchoice
> > > > > > +	help
> > > > > > +	  Support microblaze-generic
> > > > > >     source "board/xilinx/Kconfig"
> > > > > >     source "board/xilinx/microblaze-generic/Kconfig"
> > > > > 
> > > > > Applied.
> > > > 
> > > > Please drop this for now, I need to do a v2 and I've found another
> > > > randconfig that gives me:
> > > > WARNING: unmet direct dependencies detected for XILINX_MICROBLAZE0_PVR
> > > >     Depends on [n]: MICROBLAZE [=y] && TARGET_MICROBLAZE_GENERIC [=n]
> > > >     Selected by [y]:
> > > >     - CPU_MICROBLAZE [=y] && CPU [=y] && MICROBLAZE [=y]
> > > > 
> > > 
> > > I expect this is from cpuinfo driver.
> > 
> > Yes, it is. But it's one of the problems randconfig exposes since it
> > does funny things when generating a valid .config, and seeing what blows
> > up. What I have in progress now is removing TARGET_MICROBLAZE_GENERIC
> > entirely and using MICROBLAZE in the few tests.
> > 
> 
> it should be fine to mark it as dependency.
> 
> M
> 
> diff --git a/drivers/cpu/Kconfig b/drivers/cpu/Kconfig
> index 6a96be94de49..c805c0bbfa19 100644
> --- a/drivers/cpu/Kconfig
> +++ b/drivers/cpu/Kconfig
> @@ -35,9 +35,8 @@ config CPU_ARMV8
> 
>  config CPU_MICROBLAZE
>         bool "Enable Microblaze CPU driver"
> -       depends on CPU && MICROBLAZE
> +       depends on CPU && MICROBLAZE && XILINX_MICROBLAZE0_PVR
>         select DM_EVENT
> -       select XILINX_MICROBLAZE0_PVR
>         help
>           Support CPU cores for Microblaze architecture.

That's another way to go yes, if you want to post that I'll drop this
part of my current WIP branches, thanks!

-- 
Tom
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