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authorRob Herring <robh@kernel.org>2014-04-19 00:19:58 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-04-25 01:32:27 +0200
commitd50d7269ebcb438afa346cdffce0f4e2a1b9e831 (patch)
tree7095e7a34467771f9b0e3c2f113cbeb6e7ff5145 /Documentation/kernel-parameters.txt
parenttty/serial: pl011: add generic earlycon support (diff)
downloadlinux-d50d7269ebcb438afa346cdffce0f4e2a1b9e831.tar.xz
linux-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.txt2
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