Discussion:
[PATCH] tests: Disable sercon in SeaBIOS
(too old to reply)
Colin Watson
2018-07-30 11:37:22 UTC
Permalink
SeaBIOS 1.11.0 added support for VGA emulation over a serial port, which
interferes with grub-shell. Turn it off.

Signed-off-by: Colin Watson <***@ubuntu.com>
---
tests/util/grub-shell.in | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/tests/util/grub-shell.in b/tests/util/grub-shell.in
index d690d6734..93e9f5148 100644
--- a/tests/util/grub-shell.in
+++ b/tests/util/grub-shell.in
@@ -369,6 +369,13 @@ test -z "$debug" || echo "GRUB ROM directory: ${rom_directory}" >&2

if test -z "$debug"; then
qemuopts="${qemuopts} -nographic -monitor file:/dev/null"
+ # SeaBIOS 1.11.0 added support for VGA emulation over a serial port. If
+ # this is configured in SeaBIOS, then -nographic causes some extra junk to
+ # end up on the serial console, which interferes with our tests. This
+ # workaround unfortunately causes qemu to issue a warning 'externally
+ # provided fw_cfg item names should be prefixed with "opt/"', but there
+ # doesn't seem to be a better option.
+ qemuopts="${qemuopts} -fw_cfg name=etc/sercon-port,string=0"
fi

if [ x$boot != xnet ] && [ x$boot != xemu ]; then
--
2.18.0
Daniel Kiper
2018-09-04 14:33:58 UTC
Permalink
Post by Colin Watson
SeaBIOS 1.11.0 added support for VGA emulation over a serial port, which
interferes with grub-shell. Turn it off.
Reviewed-by: Daniel Kiper <***@oracle.com>

Daniel

Continue reading on narkive:
Loading...