[bootlin/training-materials updates] master: Boot time labs: replace ttyO0 by ttyS0 (e52a8df3)
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Fri Oct 29 10:46:39 CEST 2021
Repository : https://github.com/bootlin/training-materials
On branch : master
Link : https://github.com/bootlin/training-materials/commit/e52a8df3f5707cbfb834a99965acef1357adbdc0
>---------------------------------------------------------------
commit e52a8df3f5707cbfb834a99965acef1357adbdc0
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date: Tue Jun 22 13:53:25 2021 +0200
Boot time labs: replace ttyO0 by ttyS0
You get a warning in the kernel log otherwise
Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>
>---------------------------------------------------------------
e52a8df3f5707cbfb834a99965acef1357adbdc0
labs/boot-time-bootloader/boot-time-bootloader.tex | 2 +-
.../boot-time-build-kernel-and-start-system.tex | 2 +-
.../boot-time-filesystem-optimizations.tex | 2 +-
labs/boot-time-init-scripts/boot-time-init-scripts.tex | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/labs/boot-time-bootloader/boot-time-bootloader.tex b/labs/boot-time-bootloader/boot-time-bootloader.tex
index a9abe80b..0554f44d 100644
--- a/labs/boot-time-bootloader/boot-time-bootloader.tex
+++ b/labs/boot-time-bootloader/boot-time-bootloader.tex
@@ -154,7 +154,7 @@ the kernel and DTB. At least this works with U-Boot for our board.
\begin{verbatim}
load mmc 0:1 ${loadaddr} uImage
load mmc 0:1 ${fdtaddr} dtb
-setenv bootargs console=ttyO0,115200n8 rdinit=/playvideo
+setenv bootargs console=ttyS0,115200n8 rdinit=/playvideo
spl export fdt ${loadaddr} - ${fdtaddr}
\end{verbatim}
diff --git a/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex b/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex
index 521aa101..6f782567 100644
--- a/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex
+++ b/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex
@@ -179,7 +179,7 @@ setenv bootcmd 'fatload mmc 0:1 81000000 zImage; fatload mmc 0:1 82000000 dtb; b
{\footnotesize
The last thing to do is to define the kernel command line:
\begin{verbatim}
-setenv bootargs console=ttyO0,115200n8 root=/dev/mmcblk0p2 rootwait ro
+setenv bootargs console=ttyS0,115200n8 root=/dev/mmcblk0p2 rootwait ro
\end{verbatim}
}
diff --git a/labs/boot-time-filesystem-optimizations/boot-time-filesystem-optimizations.tex b/labs/boot-time-filesystem-optimizations/boot-time-filesystem-optimizations.tex
index 307e3833..517b3526 100644
--- a/labs/boot-time-filesystem-optimizations/boot-time-filesystem-optimizations.tex
+++ b/labs/boot-time-filesystem-optimizations/boot-time-filesystem-optimizations.tex
@@ -103,7 +103,7 @@ tar xvf ../buildroot/output/images/rootfs.tar
\end{itemize}
\item Go to the U-Boot command line on your board, and modify the
kernel parameters:\\
- \code{setenv bootargs console=ttyO0,115200n8 rdinit=/playvideo}\\
+ \code{setenv bootargs console=ttyS0,115200n8 rdinit=/playvideo}\\
\code{root=} and \code{rootwait} are ignored when there is an
Initramfs and \code{init} is replaced by \code{rdinit=}.
Don't forget to run \code{saveenv}.
diff --git a/labs/boot-time-init-scripts/boot-time-init-scripts.tex b/labs/boot-time-init-scripts/boot-time-init-scripts.tex
index 006dc1b9..11df36a0 100644
--- a/labs/boot-time-init-scripts/boot-time-init-scripts.tex
+++ b/labs/boot-time-init-scripts/boot-time-init-scripts.tex
@@ -164,7 +164,7 @@ Update and reflash your SD card. Reboot the board, but before booting,
stop in U-Boot to update the {\em init} program:
\begin{verbatim}
-setenv bootargs console=ttyO0,115200n8 root=/dev/mmcblk0p2 rootwait rw init=/playvideo
+setenv bootargs console=ttyS0,115200n8 root=/dev/mmcblk0p2 rootwait rw init=/playvideo
saveenv
boot
\end{verbatim}
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