[U-Boot-Users] bootargs env variable and CONFIG_CMDLINE in .config

[Wolfgang Denk]

In message <BA0E4392AD99D040885C414D992C24BE036150BE at us-bv-m11> you wrote:
> Can someone please enlighten me on the relationship between u-boot's
> env variable "bootargs" which gets passed to the linux kernel,
> and the CONFIG_CMDLINE kernel configuration setting in .config?
> Which one takes precedence if CONFIG_CMDLINE_BOOL is set and
> CONFIG_CMDLINE has a string in it?

When using U-Boot, the Linux bootloader stuff is not used at all,  so
all  related kernel config options (including CONFIG_CMDLINE) will be
unused / ignored.

> I'm running an ebony system with u-boot, booting a MontaVista 3.0
> kernel. I have modified MV's version of ebony.c to copy the bootargs

You probably have to ask MV. I don't  knwo  what  they  do  in  their
version  of the kernel tree. Normally, all the bootstrap loader stuff
is not required when using U-Boot.

It was one of the major  design  goals  to  get  rid  of  stuff  like
compiled-in command lines when I started the PPCBoot project.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
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