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authorPawel Moll <pawel.moll@st.com>2009-08-24 16:25:38 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-08-24 16:25:38 +0900
commitd724a9c9d572e092d1ce820463f082697487b874 (patch)
tree5ee5818b2c54e13a0e492f0ec6aedb9fe29f395e /arch/sh/Kconfig
parentb46373e0d4b9f714ab757aae0c19c41fbcc73ef5 (diff)
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sh: Allow for kernel command line concatenation.
So far kernel command line arguments could be passed in by a bootloader or defined as CONFIG_CMDLINE, which completely overwriting the first one. This change allows a developer to declare selected kernel parameters in a kernel configuration (eg. project-specific defconfig), retaining possibility of passing others by a bootloader. The obvious examples of the first type are MTD partition or bigphysarea-like region definitions, while "debug" option or network configuration should be given by a bootloader or a JTAG boot script. Signed-off-by: Pawel Moll <pawel.moll@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/Kconfig')
-rw-r--r--arch/sh/Kconfig27
1 files changed, 23 insertions, 4 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 80b4f9a743a..2f5352c06a0 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -767,12 +767,31 @@ config UBC_WAKEUP
If unsure, say N.
-config CMDLINE_BOOL
- bool "Default bootloader kernel arguments"
+choice
+ prompt "Kernel command line"
+ optional
+ default CMDLINE_OVERWRITE
+ help
+ Setting this option allows the kernel command line arguments
+ to be set.
+
+config CMDLINE_OVERWRITE
+ bool "Overwrite bootloader kernel arguments"
+ help
+ Given string will overwrite any arguments passed in by
+ a bootloader.
+
+config CMDLINE_EXTEND
+ bool "Extend bootloader kernel arguments"
+ help
+ Given string will be concatenated with arguments passed in
+ by a bootloader.
+
+endchoice
config CMDLINE
- string "Initial kernel command string"
- depends on CMDLINE_BOOL
+ string "Kernel command line arguments string"
+ depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
default "console=ttySC1,115200"
endmenu