freebsd with flexible iflib nic queues
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Nathan Whitehorn 4f75b93007 Avoid writing to the frame buffer in early boot on PowerPC if the CPU's
MMU is disabled.

This expands some earlier logic and avoids a number of potential problems:
1. The CPU may not be able to access the framebuffer in real mode (real
   mode does not necessarily encompass all available memory, especially
   under a hypervisor).
2. Real mode accesses generally assume cacheability, so it might not
   even have worked.
3. The difference in cacheability between real mode and later (and
   potentially earlier) points in the boot with the MMU on may cause
   ERAT parity problems, resulting in a machine check.

This fixes real-mode (usefdt=1) early boot on the G5 iMac, which was
previously broken as a result of issue #3. Late boot will require some
other fixups.
2018-05-19 22:04:54 +00:00
bin sh: Test that backslash-newline within single-quotes is not special 2018-05-11 21:56:01 +00:00
cddl ctf dwarf: don't report "no dwarf entry" as if it were an error 2018-05-19 18:50:58 +00:00
contrib Merge bmake-20180512 2018-05-19 00:26:00 +00:00
crypto Merge upstream patch to unbreak tunnel forwarding. 2018-05-16 14:04:39 +00:00
etc Set label when setting up USB LUNs, it looks nicer this way. 2018-05-16 20:44:08 +00:00
gnu Use a script wrapper for <compress>grep 2018-04-25 13:23:58 +00:00
include Add implementations for clog(3), clogf(3), and clog(3). 2018-05-13 09:54:34 +00:00
kerberos5 various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
lib Conform to Berne Convention. 2018-05-19 21:26:07 +00:00
libexec Make rtld use libc_nossp_pic.a. Remove SSP shims. 2018-05-09 10:30:56 +00:00
release release: rpi3: Copy the special rpi3 config.txt 2018-05-17 19:10:13 +00:00
rescue Avoid referencing private lib names directly. 2017-11-10 07:53:02 +00:00
sbin Make the name of option that toggles IFCAP_HWRXTSTMP capability to 2018-05-18 12:12:24 +00:00
secure Upgrade to OpenSSH 7.7p1. 2018-05-11 13:22:43 +00:00
share my copyright: some minor adjustments 2018-05-19 20:35:15 +00:00
stand Clarify that boot_mute / boot -m mutes kernel console only 2018-05-16 02:15:18 +00:00
sys Avoid writing to the frame buffer in early boot on PowerPC if the CPU's 2018-05-19 22:04:54 +00:00
targets Add kernel and userspace code to dump the firmware state of supported 2018-03-08 15:21:56 +00:00
tests Export a breakpoint() function to userland for riscv. 2018-05-16 16:56:35 +00:00
tools intel-ucode-split: incorporate review feedback, using asprintf 2018-05-17 17:45:47 +00:00
usr.bin my copyright: some minor adjustments 2018-05-19 20:35:15 +00:00
usr.sbin mtest: build with WARNS=3 2018-05-19 20:57:22 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.gitattributes .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
.gitignore .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
COPYRIGHT Remove 'All Rights Reserved' from the collection copyright and templates. 2018-05-09 02:02:49 +00:00
LOCKS
MAINTAINERS MAINTAINERS: add myself for Allwinner and 64bits RockChip 2018-02-26 21:50:13 +00:00
Makefile Don't read SRC_ENV_CONF for MAKEOBJDIRPREFIX guard. 2018-03-03 23:23:23 +00:00
Makefile.inc1 Bump min supported release for building HEAD to 10.3 2018-04-27 19:50:30 +00:00
Makefile.libcompat X_COMPILER_* may not be defined. 2018-01-24 18:08:37 +00:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Retire vxge(4). 2018-05-17 14:55:41 +00:00
README Vendor import of xz-5.2.4 (trimmed). 2018-05-18 04:06:35 +00:00
README.md Fix README.md formatting. 2018-03-02 14:42:08 +00:00
UPDATING Retire vxge(4). 2018-05-17 14:55:41 +00:00

FreeBSD Source:

This is the top level of the FreeBSD source directory. This file was last revised on: FreeBSD

For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information).

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7) and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables.

The buildkernel and installkernel targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process. See build(7), config(8), and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information.

Note: If you want to build and install the kernel with the buildkernel and installkernel targets, you might need to build world before. More information is available in the handbook.

The kernel configuration files reside in the sys/<arch>/conf sub-directory. GENERIC is the default configuration used in release builds. NOTES contains entries and documentation for all possible devices, not just those commonly used.

Source Roadmap:

bin		System/user commands.

cddl		Various commands and libraries under the Common Development
		and Distribution License.

contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc.

gnu		Various commands and libraries under the GNU Public License.
		Please see gnu/COPYING* for more information.

include		System include files.

kerberos5	Kerberos5 (Heimdal) package.

lib		System libraries.

libexec		System daemons.

release		Release building Makefile & associated tools.

rescue		Build system for statically linked /rescue utilities.

sbin		System commands.

secure		Cryptographic libraries and commands.

share		Shared resources.

stand		Boot loader sources.

sys		Kernel sources.

tests		Regression tests which can be run by Kyua.  See tests/README
		for additional information.

tools		Utilities for regression testing and miscellaneous tasks.

usr.bin		User commands.

usr.sbin	System administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html