Most architectures have similar boot command line manipulation options. This patchs adds the definition in init/Kconfig, gated by CONFIG_HAVE_CMDLINE that the architectures can select to use them. In order to use this, a few architectures will have to change their CONFIG options: - riscv has to replace CMDLINE_FALLBACK by CMDLINE_FROM_BOOTLOADER - architectures using CONFIG_CMDLINE_OVERRIDE or CONFIG_CMDLINE_OVERWRITE have to replace them by CONFIG_CMDLINE_FORCE. Architectures also have to define CONFIG_DEFAULT_CMDLINE. Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx> --- init/Kconfig | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) diff --git a/init/Kconfig b/init/Kconfig index 22946fe5ded9..a0f2ad9467df 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -117,6 +117,62 @@ config INIT_ENV_ARG_LIMIT Maximum of each of the number of arguments and environment variables passed to init from the kernel command line. +config HAVE_CMDLINE + bool + +config CMDLINE_BOOL + bool "Default bootloader kernel arguments" + depends on HAVE_CMDLINE + help + On some platforms, there is currently no way for the boot loader to + pass arguments to the kernel. For these platforms, you can supply + some command-line options at build time by entering them here. In + most cases you will need to specify the root device here. + +config CMDLINE + string "Initial kernel command string" + depends on CMDLINE_BOOL + default DEFAULT_CMDLINE + help + On some platforms, there is currently no way for the boot loader to + pass arguments to the kernel. For these platforms, you can supply + some command-line options at build time by entering them here. In + most cases you will need to specify the root device here. + +choice + prompt "Kernel command line type" if CMDLINE != "" + default CMDLINE_FROM_BOOTLOADER + help + Selects the way you want to use the default kernel arguments. + +config CMDLINE_FROM_BOOTLOADER + bool "Use bootloader kernel arguments if available" + help + Uses the command-line options passed by the boot loader. If + the boot loader doesn't provide any, the default kernel command + string provided in CMDLINE will be used. + +config CMDLINE_EXTEND + bool "Extend bootloader kernel arguments" + help + The default kernel command string will be appended to the + command-line arguments provided during boot. + +config CMDLINE_PREPEND + bool "Prepend bootloader kernel arguments" + help + The default kernel command string will be prepend to the + command-line arguments provided during boot. + +config CMDLINE_FORCE + bool "Always use the default kernel command string" + help + Always use the default kernel command string, even if the boot + loader passes other arguments to the kernel. + This is useful if you cannot or don't want to change the + command-line options your boot loader passes to the kernel. +endchoice + config COMPILE_TEST bool "Compile also drivers which will not load" depends on !UML && !S390 -- 2.25.0
