Editing Kernel command-line arguments inside Kernel

问题

U-boot passes kernel command-line parameters. In my requirement I want to edit these parameters in the kernel source tree and don't want to change U-boot code. I am using 2.6.35 kernel.

So please guide me which part of the kernel source I have to check for this.

回答1:

Follow this procedure:

• Enter the kernel config by typing make menuconfig
• Enter the menu Processor type and features
• Enable Built-in kernel command line
• Specify your command line by clicking on Built-in kernel command string
• Select Built-in command line overrides boot loader arguments if you want bootargs to be ignored

回答2:

You can change if from kernel config:-

+CONFIG_CMDLINE="foo=1"
+CONFIG_CMDLINE_EXTEND=y

Check runtime:-
$cat /proc/cmdline

来源：https://stackoverflow.com/questions/34307977/editing-kernel-command-line-arguments-inside-kernel