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From: Palmer Dabbelt <>
	Christoph Hellwig <>,
Cc:, Palmer Dabbelt <>
Subject: [PATCH] Documentation: Add "earlycon=sbi" to the admin guide
Date: Fri, 13 Sep 2019 13:38:43 -0700
Message-ID: <> (raw)

This argument is supported on RISC-V systems and widely used, but was
not documented here.

Signed-off-by: Palmer Dabbelt <>
 Documentation/admin-guide/kernel-parameters.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 4c1971960afa..ca437381f91f 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1044,6 +1044,10 @@
 			specified address. The serial port must already be
 			setup and configured. Options are not yet supported.
+		sbi
+			Use RISC-V SBI (Supervisor Binary Interface) for early
+			console.
 		smh	Use ARM semihosting calls for early console.

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-13 20:38 Palmer Dabbelt [this message]
2019-09-14  7:55 ` Jonathan Corbet

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