https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210903
Bug ID: 210903
Summary: Section 25.6 (Setting up the serial console) of the
Handbook has some errors and omissions
Product: Documentation
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: Documentation
Assignee: [email protected]
Reporter: [email protected]
(1) In section 25.6.3:
For the bootloader, one can use the flag -S115200 in /boot.config to set the
speed instead of recompiling.
(2) In section 25.6.3:
The listed set of commands to rebuild the bootloader failed to work on new
install of FreeBSD 10.3. I had to do the following:
cd /usr/src/sys/boot
MKOBJDIRPREFIX=/usr/obj make obj depend all
MKOBJDIRPREFIX=/usr/obj make install
I'm not terribly familiar with the ins and outs of the world makefiles so maybe
there is a better way than this. Regardless, the instructions in the handbook
are wrong and result in a build failure.
(3) It would be helpful to add a subsection on how to use a different serial
port such as COM2.
The steps I figured out to do this are:
1. Search dmesg for the port number of the desired serial port (0x2f8 for COM2
usuallt)
2. Bootloader: Rebuild with BOOT_COMCONSOLE_PORT=0x2f8. There does not appear
to be a command line option for this in /boot.config.
3. Console: Recompile loader with BOOT_COMCONSOLE_PORT=0x2f8 or specify
comconsole_port=0x2f8 in /boot/loader.conf
4. Login: Enable the console for /dev/ttyu1 in /etc/ttys
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