Date: Sun, 10 Nov 2024 12:22:57 -0800 From: Mark Millard <marklmi@yahoo.com> To: Current FreeBSD <freebsd-current@freebsd.org>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Cc: Warner Losh <imp@bsdimp.com> Subject: "man loader.efi" and comconsole vs. eficom for aarch64 for 14.* and later Message-ID: <3D054DF2-843C-4270-8EE5-38534C873B50@yahoo.com>
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# man -K comconsole
/usr/share/man/man8/loader.8.gz: console variable, or set it to serial console (“comconsole”) if the
/usr/share/man/man8/loader.efi.8.gz: work) and “comconsole” for the serial on COM1 at the default baud rate.
/usr/share/man/man8/loader.efi.8.gz: “comconsole”. The default port is COM1 with an I/O address of 0x3f8.
/usr/share/man/man8/loader.efi.8.gz: comconsole_port is used to set this to a different port address.
/usr/share/man/man8/loader.efi.8.gz: comconsole_speed is used to set the of the serial port (the default is
/usr/share/man/man8/loader.efi.8.gz: 9600). If you have console set to “efi,comconsole” you will get output
/usr/share/man/man8/loader_4th.8.gz: console variable, or set it to serial console (“comconsole”) if the
/usr/share/man/man8/loader_lua.8.gz: console variable, or sets it to serial console (“comconsole”) if the
/usr/share/man/man8/loader_simp.8.gz: console variable, or set it to serial console (“comconsole”) if the
/usr/share/man/man5/loader.conf.5.gz: console (“vidconsole”) “comconsole” selects serial console,
# man -K eficom
#
Note: The above is for both main and stable/14 . No mention
of eficom or in what types of contexts it should be used
vs. not.
But:
#if defined(__aarch64__) && __FreeBSD_version < 1500000
static void
comc_probe_compat(struct console *sc)
{
comc_probe(&eficom);
if (eficom.c_flags & (C_PRESENTIN | C_PRESENTOUT)) {
printf("comconsole: comconsole device name is deprecated, switch to eficom\n");
}
/*
* Note: We leave the present bits unset in sc to avoid ghosting.
*/
}
#endif
There are other places with the documentation issue, for
example https://wiki.freebsd.org/HyperV references:
QUOTE
Enable the serial in the VM. Below is the example of FreeBSD VM.
• echo 'console="comconsole"' >> /boot/loader.conf
END QUOTE
I got into this from trying to get a Windows Dev Kit 2023
running Windows Pro 11 Hyper-V to be operational for running
FreeBSD. Its output stops after the mask line for the efi
buffer reporting. (Hyper-V indicates 12% cpu usage. 1 core
of 8 busy?) I was looking for any extra instructions that
I'd not previously found. (I had remembered that eficom
activity had happened --but not all the detail.)
===
Mark Millard
marklmi at yahoo.com
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