diff options
| author | Rob Herring <robh@kernel.org> | 2014-04-18 17:19:58 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-24 16:32:27 -0700 |
| commit | d50d7269ebcb438afa346cdffce0f4e2a1b9e831 (patch) | |
| tree | 7095e7a34467771f9b0e3c2f113cbeb6e7ff5145 /Documentation/kernel-parameters.txt | |
| parent | 0d3c673e7881e691991b2a4745bd4f149603baa2 (diff) | |
| download | lwn-d50d7269ebcb438afa346cdffce0f4e2a1b9e831.tar.gz lwn-d50d7269ebcb438afa346cdffce0f4e2a1b9e831.zip | |
tty/serial: add arm/arm64 semihosting earlycon
Add earlycon support for the arm/arm64 semihosting debug serial
interface. This allows enabling a debug console when early_params are
processed. This is based on the arm64 earlyprintk smh support and is
intended to replace it.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 2609ead7ff55..4946d8e58d53 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -899,6 +899,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. must already be setup and configured. Options are not yet supported. + smh Use ARM semihosting calls for early console. + earlyprintk= [X86,SH,BLACKFIN,ARM] earlyprintk=vga earlyprintk=efi |