svn commit: r335276 - in head/stand/i386: gptboot zfsboot

[Allan Jude]

On 2018-06-17 07:32, Eugene Grosbein wrote:
> 17.06.2018 10:18, Allan Jude wrote:
> 
>> Author: allanjude
>> Date: Sun Jun 17 03:18:56 2018
>> New Revision: 335276
>> URL: https://svnweb.freebsd.org/changeset/base/335276
>>
>> Log:
>>   gptboot, zfsboot, gptzfsboot: Enable the video and serial consoles early
>>   
>>   Normally the serial console is not enabled until /boot.config is read and
>>   we know how the serial console should be configured.  Initialize the
>>   consoles early in 'dual' mode (serial & keyboard) with a default serial
>>   rate of 115200. Then serial is re-initialized once the disk is decrypted
>>   and the /boot.config file can be read.
>>   
>>   This allows the GELIBoot passphrase to be provided via the serial console.
>>   
>>   PR:		221526
>>   Requested by:	many
>>   Reviewed by:	imp
>>   Sponsored by:	Klara Systems
>>   Differential Revision:	https://reviews.freebsd.org/D15862
> 
> I had several cases when booting FreeBSD/amd64 with motherboard having no serial ports
> hang hard early at boot unless I rebuilt boot media configuring it to NOT try accessing
> missing serial ports. I even could reproduce that with VirtualBox machine configured
> with no serial ports (not same as existing bug inactive serial port).
> 
> Should there be some way to disable this serial ports configuration at compile time?
> 
> 
> 

I think what we'll do it compile it both ways, and use the non-serial
one by default, because it is safer. Then you can just use
'gptboot-serial' if you want serial support.

This will likely make Warner a bit sad, since we are just finally
getting around to reducing the number of different bootcode files.

-- 
Allan Jude