How to override default Kernel config

[Henbin Chang]

My machine isn't in the OpenBMC tree.

I list the partial contents in my machine layer
  ...
  meta-aspeed \
  meta-x86 \
  meta-x86/meta-mct \
  meta-x86/meta-mct/meta-tiogapass \ -> the last line in the bblayers.conf

In the merge_config_build.log, I find the merging sequence is the below
  Using .kernel-meta/configs//./tiogapass.cfg as base
  Merging .kernel-meta/configs//./phosphor-gpio-keys.cfg
  Merging .kernel-meta/configs//./phosphor-gpio-keys.cfg
  Merging .kernel-meta/configs//./phosphor-vlan.cfg
  Merging .kernel-meta/configs//./phosphor-vlan.cfg
  Merging .kernel-meta/configs//./phosphor-wdt-on-panic.cfg
  Merging .kernel-meta/configs//./phosphor-wdt-on-panic.cfg
  Merging .kernel-meta/configs//./defconfig
  ...

Suppose the CONFIG_DEVMEM=y is removed while 'Merging
.kernel-meta/configs//./defconfig'

Thanks.

2018-07-04 10:34 GMT+08:00 Lei YU <mine260309 at gmail.com>:

> > After following your instructions, the CONFIG_DEVMEM is still not set in
> the below '.config'
> >
> > workspace/sources/linux-aspeed/.config
> >
> > It did work if I directly modified meta-openbmc-bsp/meta-aspeed/
> recipes-kernel/linux/linux-aspeed/ast2500/defconfig
>
> Then you need to make sure if your build config include the machine layer
> by
> checking the build configuration.
>
> E.g. below is meta-romulus' configuration, check if your meta-machine is
> correctly included.
>
>     Build Configuration:
>     ...
>     meta
>     meta-poky
>     meta-oe
>     meta-networking
>     meta-perl
>     meta-python
>     meta-webserver
>     meta-virtualization
>     meta-phosphor
>     meta-aspeed
>     meta-openpower
>     meta-ibm
>     meta-romulus   <== Your meta-machine should appear here.
>
> Btw, what is your machine, is it in OpenBMC tree?
>
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