[U-Boot] [PATCH] env: Merge Rockchip, Sunxi, Zynq and ZynqMP

[Maxime Ripard]

On Fri, Jul 20, 2018 at 08:28:07AM +0200, Michal Simek wrote:
> On 19.7.2018 17:50, Maxime Ripard wrote:
> > On Thu, Jul 19, 2018 at 10:53:44AM -0400, Tom Rini wrote:
> >> On Thu, Jul 19, 2018 at 03:45:11PM +0200, Michal Simek wrote:
> >>> On 19.7.2018 13:13, Maxime Ripard wrote:
> >>>> Hi,
> >>>>
> >>>> On Thu, Jul 19, 2018 at 08:45:45AM +0200, Michal Simek wrote:
> >>>>> There is no reason to have the same Kconfig options for different SoCs
> >>>>> separately. The patch is merging them together.
> >>>>>
> >>>>> Signed-off-by: Michal Simek <michal.simek at xilinx.com>
> >>>>> ---
> >>>>>
> >>>>> Patch is based on
> >>>>> https://lists.denx.de/pipermail/u-boot/2018-July/335126.html
> >>>>>
> >>>>> I have ENV_SECT_SIZE just for zynq/zynqmp because rockchip and sunxi
> >>>>> have this in their configs. When they decide to move then can enable
> >>>>> that option for them too.
> >>>>> I expect when more platforms extend this we will have less constrain
> >>>>> Kconfig setup.
> >>>>>
> >>>>> ---
> >>>>>  env/Kconfig | 66 ++++++++++++++++---------------------------------------------
> >>>>>  1 file changed, 17 insertions(+), 49 deletions(-)
> >>>>>
> >>>>> diff --git a/env/Kconfig b/env/Kconfig
> >>>>> index b37dcd78eb75..0ded003d7d41 100644
> >>>>> --- a/env/Kconfig
> >>>>> +++ b/env/Kconfig
> >>>>> @@ -431,23 +431,37 @@ config ENV_EXT4_FILE
> >>>>>  	  It's a string of the EXT4 file name. This file use to store the
> >>>>>  	  environment (explicit path to the file)
> >>>>>  
> >>>>> -if ARCH_SUNXI
> >>>>> +if ARCH_ROCKCHIP || ARCH_SUNXI || ARCH_ZYNQ || ARCH_ZYNQMP
> >>>>
> >>>> Can we have a depends on instead? That would be more flexible.
> >>>
> >>> In what sense? If depends is used below then the same 4 platforms will
> >>> be listed on all options below. (I want to also add ZYNQMP_R5 there too)
> >>> And changing this in one place seems to me better then on four.
> >>
> >> For now I like the "if" method for now as we can't (or couldn't a while
> >> ago) globally migrate everyone over.  I think trying to move everyone
> >> over again is something I should give another try.
> > 
> > Ack.
> > 
> >>>>>  config ENV_OFFSET
> >>>>>  	hex "Environment Offset"
> >>>>>  	depends on !ENV_IS_IN_UBI
> >>>>>  	depends on !ENV_IS_NOWHERE
> >>>>> +	default 0x3f8000 if ARCH_ROCKCHIP
> >>>>>  	default 0x88000 if ARCH_SUNXI
> >>>>> +	default 0xE0000 if ARCH_ZYNQ
> >>>>> +	default 0x1E00000 if ARCH_ZYNQMP
> >>>>>  	help
> >>>>>  	  Offset from the start of the device (or partition)
> >>>>>  
> >>>>>  config ENV_SIZE
> >>>>>  	hex "Environment Size"
> >>>>> -	depends on !ENV_IS_NOWHERE
> >>>>> -	default 0x20000 if ARCH_SUNXI
> >>>>> +	default 0x8000 if ARCH_ROCKCHIP && !ENV_IS_NOWHERE
> >>>>> +	default 0x20000 if ARCH_SUNXI && !ENV_IS_NOWHERE
> >>>>
> >>>> I'm not sure why you removed the depends on !ENV_IS_NOWHERE. Do you
> >>>> have a case where the environment is not store anywhere but still need
> >>>> a size?
> >>>
> >>> yes, I had a compilation warning for that case.
> >>>
> >>> in include/environment.h at line 145 it is written this
> >>> #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
> >>>
> >>> ENV_SIZE is also used in typedef struct environment_s some lines below.
> >>> And this structure is used a lot.
> >>>
> >>> How did you find out that this can't be used for ENV_IS_NOWHERE?
> >>
> >> I would have sworn that ENV_SIZE is used for ENV_IS_NOWHERE as that's
> >> how much space we have for environment when it's in memory as well.
> > 
> > Argh, sorry for that I was abused by sunxi-common still having that:
> > https://git.denx.de/?p=u-boot.git;a=blob;f=include/configs/sunxi-common.h#l161
> > 
> > While i was convinced that we were relying solely on Kconfig. I'll
> > send a subsequent patch, that one works for me.
> 
> Ok. Can you please convert this to any official tag which I can include?

Acked-by: Maxime Ripard <maxime.ripard at bootlin.com>

Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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