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authorRobin Getz <robin.getz@analog.com>2007-10-09 17:24:49 +0800
committerBryan Wu <bryan.wu@analog.com>2007-10-09 17:24:49 +0800
commit0ae53640b54f2c30e52044f7102ba08915b988a7 (patch)
treec8d89d9856d994e0069fe3dbe9687b96c7a79162 /arch/blackfin/Kconfig
parent1d487f468de75b8a5c664db60e106935f9dc753b (diff)
downloadop-kernel-dev-0ae53640b54f2c30e52044f7102ba08915b988a7.zip
op-kernel-dev-0ae53640b54f2c30e52044f7102ba08915b988a7.tar.gz
Blackfin arch: Initial patch to add earlyprintk support
This allows debugging of problems which happen eary in the kernel boot process (after bootargs are parsed, but before serial subsystem is fully initialized) Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'arch/blackfin/Kconfig')
-rw-r--r--arch/blackfin/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 26ebb0e..cc789b9 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -1164,6 +1164,20 @@ config DEBUG_BFIN_NO_KERN_HWTRACE
Say Y here to disable hardware tracing in some known "jumpy" pieces
of code so that the trace buffer will extend further back.
+config EARLY_PRINTK
+ bool "Early printk"
+ default n
+ help
+ This option enables special console drivers which allow the kernel
+ to print messages very early in the bootup process.
+
+ This is useful for kernel debugging when your machine crashes very
+ early before the console code is initialized. After enabling this
+ feature, you must add "earlyprintk=serial,uart0,57600" to the
+ command line (bootargs). It is safe to say Y here in all cases, as
+ all of this lives in the init section and is thrown away after the
+ kernel boots completely.
+
config DUAL_CORE_TEST_MODULE
tristate "Dual Core Test Module"
depends on (BF561)
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