sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

show more ...

uart: Don't check SPCR tables if !late_console

On x86 systems, the debug.late_console tunable makes it possible to set
up the console before we call pmap_bootstrap. (The tunable is turned
on by def

uart: Don't check SPCR tables if !late_console

On x86 systems, the debug.late_console tunable makes it possible to set
up the console before we call pmap_bootstrap. (The tunable is turned
on by default; setting late_console=0 results in consoles being probed
early.)

Unfortunately this is not compatible with using the ACPI SPCR table to
find the console, since consulting ACPI tables requires mapping memory
addresses. As such, we skip the call to uart_cpu_acpi_spcr from
uart_cpu_x86 in the !late_console case.

Reviewed by: imp
Sponsored by: https://www.patreon.com/cperciva
Differential Revision: https://reviews.freebsd.org/D35794

show more ...

Use ACPI SPCR on x86

This takes the SPCR code currently in uart_cpu_arm64.c, moves it into
a new uart_cpu_acpi.c (with some associated refactoring), and uses it
from both arm64 and x86.

An SPCR ser

Use ACPI SPCR on x86

This takes the SPCR code currently in uart_cpu_arm64.c, moves it into
a new uart_cpu_acpi.c (with some associated refactoring), and uses it
from both arm64 and x86.

An SPCR serial port address AccessWidth field value of 0 ("reserved")
is now treated as 1 ("byte access") in order to work around a buggy
SPCR table on Amazon EC2 i3.metal instances.

Reviewed by: manu, Greg V
MFC after: 3 days
Sponsored by: https://www.patreon.com/cperciva
Differential Revision: https://reviews.freebsd.org/D20357

show more ...

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

show more ...

uart_cpu_amd64.c and uart_cpu_i386.c (under sys/dev/uart) are
identical now that the bus spaces are unified under sys/x86.
Replace them with a single uart_cpu_x86.c.
o delete uart_cpu_i386.c
o mo

uart_cpu_amd64.c and uart_cpu_i386.c (under sys/dev/uart) are
identical now that the bus spaces are unified under sys/x86.
Replace them with a single uart_cpu_x86.c.
o delete uart_cpu_i386.c
o move uart_cpu_amd64.c to uart_cpu_x86.c
o update files.amd64 and files.i386 accordingly.

show more ...