linux/arch/m68k/Kconfig.debug
Finn Thain 7913ad1ad8 m68k: Multi-platform EARLY_PRINTK
Make the boot console available to more m68k platforms by leveraging
the head.S debug console.

The boot console is enabled by the "earlyprintk" command line argument
which is how most other architectures do this.

This is a change of behaviour for the Mac but does not negatively impact
the common use-case which is not debugging.

This is also a change of behaviour for other platforms because it means
the serial port stays quiet when CONFIG_EARLY_PRINTK is not enabled. This
is also an improvement for the common use-case.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stephen N Chivers <schivers@csc.com.au>
[Geert: CONSOLE_DEBUG should depend on CONFIG_FONT_SUPPORT]
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:10:04 +02:00

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menu "Kernel hacking"
source "lib/Kconfig.debug"
config BOOTPARAM
bool 'Compiled-in Kernel Boot Parameter'
config BOOTPARAM_STRING
string 'Kernel Boot Parameter'
default 'console=ttyS0,19200'
depends on BOOTPARAM
config EARLY_PRINTK
bool "Early printk"
depends on !(SUN3 || M68360 || M68000 || COLDFIRE)
help
Write kernel log output directly to a serial port.
Where implemented, output goes to the framebuffer as well.
PROM console functionality on Sun 3x is not affected by this option.
Pass "earlyprintk" on the kernel command line to get a
boot console.
This is useful for kernel debugging when your machine crashes very
early, i.e. before the normal console driver is loaded.
You should normally say N here, unless you want to debug such a crash.
if !MMU
config FULLDEBUG
bool "Full Symbolic/Source Debugging support"
help
Enable debugging symbols on kernel build.
config HIGHPROFILE
bool "Use fast second timer for profiling"
depends on COLDFIRE
help
Use a fast secondary clock to produce profiling information.
config NO_KERNEL_MSG
bool "Suppress Kernel BUG Messages"
help
Do not output any debug BUG messages within the kernel.
config BDM_DISABLE
bool "Disable BDM signals"
depends on COLDFIRE
help
Disable the ColdFire CPU's BDM signals.
endif
endmenu