path: root/Documentation/x86/x86_64
diff options
authorDave Hansen <dave@sr71.net>2013-04-10 14:03:38 -0700
committerIngo Molnar <mingo@kernel.org>2013-04-11 10:30:40 +0200
commit147ea09119e45caf2e8bf57c9e54cc930ccfeda9 (patch)
tree5b7c02dc0cf0ea2feea5887a2bf72337d4ba029f /Documentation/x86/x86_64
parentc391c7884633cdc317a60fbf152d1764282fe633 (diff)
x86, early-printk: Update earlyprintk documentation (and kill x86 copy)
Documentation/kernel-parameters.txt and Documentation/x86/x86_64/boot-options.txt contain virtually identical text describing earlyprintk. This consolidates the two copies and updates the documentation a bit. No one ever documented the: earlyprintk=serial,0x1008,115200 syntax, nor mentioned that ARM is now a supported earlyprintk arch. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Rob Landley <rob@landley.net> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave@sr71.net> Link: http://lkml.kernel.org/r/20130410210338.E2930E98@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/x86/x86_64')
1 files changed, 0 insertions, 14 deletions
diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
index e015a83c3996..e9e8ddbbf376 100644
--- a/Documentation/x86/x86_64/boot-options.txt
+++ b/Documentation/x86/x86_64/boot-options.txt
@@ -91,20 +91,6 @@ APICs
apicmaintimer. Useful when your PIT timer is totally
-Early Console
- syntax: earlyprintk=vga
- earlyprintk=serial[,ttySn[,baudrate]]
- The early console is useful when the kernel crashes before the
- normal console is initialized. It is not enabled by
- default because it has some cosmetic problems.
- Append ,keep to not disable it when the real console takes over.
- Only vga or serial at a time, not both.
- Currently only ttyS0 and ttyS1 are supported.
- Interaction with the standard serial driver is not very good.
- The VGA output is eventually overwritten by the real console.

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