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Kernel configurations reset by make command

elem2018

Hi There,

 

my environment:

BBB, ti-processor-sdk-linux-am335x-evm-05.01.00.11

 

After running

$(MAKE) -C $(LINUXKERNEL_INSTALL_DIR) ARCH=arm CROSS_COMPILE=$(CROSS_COMPILE)  tisdk_am335x-evm_defconfig

I get .config file in the linux kernel root path

 

Now I changed CONFIG_BRCMFMAC=m to CONFIG_BRCMFMAC=y  in this .config file to get inbuild driver.

 

After that I built the dtb file

$(MAKE) -j $(MAKE_JOBS) -C $(LINUXKERNEL_INSTALL_DIR) ARCH=arm CROSS_COMPILE=$(CROSS_COMPILE)  am335x-boneblack.dtb

 

Now strange thing happened:

CONFIG_BRCMFMAC=y in the .config file is set back to CONFIG_BRCMFMAC=m,   not what I wanted CONFIG_BRCMFMAC=y !

It seems that the make command reset the .config file.

 

Question:

How can I make sure that CONFIG_BRCMFMAC=y stays permanently, not reset by the make command?  I tried to do it in the tisdk_am335x-evm_defconfig file, but the same results.

 

Regards

Xi

Parents

  • Hi,

     

    excatly speaking it is not reset, but ovewritten.  Now I find out that the FMAC driver can't be set as built-in, running menuconfig I can only choose either FMAC as module or no FMAC. In the appropriate Kconfig file, I see the FMAC is defined as tristate,

    so it is strange why only two states are allowed.  The Linux kernel versoin 4.14.67.  Thanks in advance for any hint

     

    Regards

    Xi

Reply

  • Hi,

     

    excatly speaking it is not reset, but ovewritten.  Now I find out that the FMAC driver can't be set as built-in, running menuconfig I can only choose either FMAC as module or no FMAC. In the appropriate Kconfig file, I see the FMAC is defined as tristate,

    so it is strange why only two states are allowed.  The Linux kernel versoin 4.14.67.  Thanks in advance for any hint

     

    Regards

    Xi

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