Hi Hans,
2016-06-11 23:07 GMT+09:00 Hans de Goede hdegoede@redhat.com:
Hi All,
While looking into adding a DISTRO_DEFAULTS Kconfig option, I noted that commit bb597c0eeb7e besides introducing the BOOT_DELAY issues we've been discussing also removes
CONFIG_MACH_SUN4I=y
From the defconfig of all sun4i (Allwinner A10) based boards.
This is defined in board/sunxi/Kconfig :
choice prompt "Sunxi SoC Variant"
config MACH_SUN4I bool "sun4i (Allwinner A10)" select CPU_V7 select SUNXI_GEN_SUN4I select SUPPORT_SPL
config MACH_SUN5I bool "sun5i (Allwinner A13)" select CPU_V7 select SUNXI_GEN_SUN4I select SUPPORT_SPL
config MACH_SUN6I bool "sun6i (Allwinner A31)" select CPU_V7 select CPU_V7_HAS_NONSEC select CPU_V7_HAS_VIRT select SUNXI_GEN_SUN6I select SUPPORT_SPL select ARMV7_BOOT_SEC_DEFAULT if OLD_SUNXI_KERNEL_COMPAT
...
endchoice
And it seems that moveconfig.py now has decided to remove the explicit setting of this from all defconfig's which were setting it to the first choice, this seems wrong, since this means that if we now choose to sort choice options differently all of a sudden things change.
More precisely, it is decided by "make savedefconfig".
To prevent the moveconfig tool from dropping the first choice, "optional" was added by commit a26cd04920dc069fd6e91abb785426cf6c29f45f
This is, I think, not the best solution, though.
I guess this may be caused by:
http://git.denx.de/?p=u-boot.git;a=commitdiff;h=1a5f0de08e86f2f127aaac928fee...
But that commit in itself seems sensible, and this seems like a surprising result, since there is no default defined in the Kconfig.
If neither "default" nor "optional" is specified in a choice menu, the first entry is considered as its default.
So, "make savedefconfig" dropped CONFIG_MACH_SUN4I=y because having default values in a defconfig is redundant.
Anyways if this considered not a bug from the moveconfig.py pov then I'll revert the above commit, as I do want the sun?i family to be clearly stated in the defconfig in all cases.
This was discussed in this thread: http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/220748/focus=220804
Then commit a26cd04920dc069fd6e91abb785426cf6c29f45f was applied.
But, SoC/board maintainers can replace the "optional" with a reasonable default in the SoC/board select menu.
Please see my commit 7fff91ffc0d7517dd8b3e5fc8289c380638770e2 commit ff560a13056a565a4e9ce1761bd04276a3cace88