diff options
| author | Chris Packham <chris.packham@alliedtelesis.co.nz> | 2019-08-02 10:50:06 +1200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-11-07 21:15:27 +1100 |
| commit | d79fbb3a32f05a7e1cc0294b86dacdb9cc3ad7f5 (patch) | |
| tree | c8b097b8c72948ae563bb04a7771b17f70ceed3f /arch/powerpc/Kconfig | |
| parent | 6266a4dadb1d0976490fdf5af4f7941e36f64e80 (diff) | |
| download | lwn-d79fbb3a32f05a7e1cc0294b86dacdb9cc3ad7f5.tar.gz lwn-d79fbb3a32f05a7e1cc0294b86dacdb9cc3ad7f5.zip | |
powerpc: Support CMDLINE_EXTEND
Bring powerpc in line with other architectures that support extending or
overriding the bootloader provided command line.
The current behaviour is most like CMDLINE_FROM_BOOTLOADER where the
bootloader command line is preferred but the kernel config can provide a
fallback so CMDLINE_FROM_BOOTLOADER is the default. CMDLINE_EXTEND can
be used to append the CMDLINE from the kernel config to the one provided
by the bootloader.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190801225006.21952-1-chris.packham@alliedtelesis.co.nz
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 3e56c9c2f16e..51a975c3d79b 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -874,15 +874,33 @@ config CMDLINE 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 + +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 command-line arguments provided by the boot loader will be + appended to the default kernel command string. + config CMDLINE_FORCE bool "Always use the default kernel command string" - depends on CMDLINE_BOOL 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 EXTRA_TARGETS string "Additional default image types" help |