I'm resending this as-is because the earlier thread petered out
without any strong arguments against this approach. x86_64 patch to
follow.
Allow setting the kernel command line at compile time on x86.
Signed-off-by: Matt Mackall <[email protected]>
Index: linux/arch/i386/Kconfig
===================================================================
--- linux.orig/arch/i386/Kconfig 2006-07-26 18:08:28.000000000 -0500
+++ linux/arch/i386/Kconfig 2006-07-27 16:09:13.000000000 -0500
@@ -830,6 +830,20 @@ config COMPAT_VDSO
If unsure, say Y.
+config CMDLINE_BOOL
+ bool "Default bootloader kernel arguments" if EMBEDDED
+
+config CMDLINE
+ string "Initial kernel command string" if EMBEDDED
+ depends on CMDLINE_BOOL
+ default "root=/dev/hda1 ro"
+ help
+ On some systems, there is 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.
+
endmenu
config ARCH_ENABLE_MEMORY_HOTPLUG
Index: linux/arch/i386/kernel/setup.c
===================================================================
--- linux.orig/arch/i386/kernel/setup.c 2006-07-26 18:08:28.000000000 -0500
+++ linux/arch/i386/kernel/setup.c 2006-07-27 16:09:13.000000000 -0500
@@ -723,6 +723,10 @@ static void __init parse_cmdline_early (
int len = 0;
int userdef = 0;
+#ifdef CONFIG_CMDLINE_BOOL
+ strlcpy(saved_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+#endif
+
/* Save unparsed command line copy for /proc/cmdline */
saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
--
Mathematics is the supreme nostalgia of our time.
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