I have a theory that some of the console boot issues we're seeing are due to
starting images with three serial ports yet only starting gettys on two of them.
This means that occasionally, depending on the port numbering we may not get
a login prompt on the console we expect it on.
To fix this, change the runqemu code so that if serial ports are passed in on
the commandline (as is the case in automated testing), we don't add any other
GUI serial consoles.
We do need to make sure we do have at least two serial ports since we don't want
getty timeout warnings.
Signed-off-by: Richard Purdie <richard.pur...@linuxfoundation.org>
---
scripts/runqemu | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/scripts/runqemu b/scripts/runqemu
index 3a170332689..0668e12e616 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -1467,6 +1467,19 @@ to your build configuration.
for entry in self.get('SERIAL_CONSOLES').split(' '):
self.kernel_cmdline_script += ' console=%s'
%entry.split(';')[1]
+ # We always wants ttyS0 and ttyS1 in qemu machines (see
SERIAL_CONSOLES).
+ # If no serial or serialtcp options were specified, only ttyS0 is
created
+ # and sysvinit shows an error trying to enable ttyS1:
+ # INIT: Id "S1" respawning too fast: disabled for 5 minutes
+ serial_num = len(re.findall("-serial", self.qemu_opt))
+
+ # Assume if the user passed serial options, they know what they want
+ # and pad to two devices
+ if serial_num == 1:
+ self.qemu_opt += " -serial null"
+ elif serial_num >= 2:
+ return
+
if self.serialstdio == True or self.nographic == True:
self.qemu_opt += " -serial mon:stdio"
else:
@@ -1478,10 +1491,6 @@ to your build configuration.
self.qemu_opt += " %s" % self.get("QB_SERIAL_OPT")
- # We always wants ttyS0 and ttyS1 in qemu machines (see
SERIAL_CONSOLES).
- # If no serial or serialtcp options were specified, only ttyS0 is
created
- # and sysvinit shows an error trying to enable ttyS1:
- # INIT: Id "S1" respawning too fast: disabled for 5 minutes
serial_num = len(re.findall("-serial", self.qemu_opt))
if serial_num < 2:
self.qemu_opt += " -serial null"
--
2.39.2
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