d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
FreeBSD src
269,565 Commits 72 Branches 135 Tags 3.2 GiB
C 59.6%
C++ 25.5%
Roff 5.1%
Shell 2.9%
Assembly 2.7%
Other 3.6%
d3514c2942
Go to file
Adrian Chadd d3514c2942 ipq401x: add MP core start-up path for the CPU regulator/clock gate used 
This code implements the "kpssv2" flavour of CPU regulator/clock gating
in Linux.  It's used by at least the ipq4018/4019 to power on and off
CPU cores.

This is based on the Linux implementation - the register definitions
and values are from Linux and I've reverse engineered the sequencing
requirements.

The MP bring-up is:

* set cold boot address via an SCM call - this is the address used
  by the bootloader/TZ firmware to jump to when the CPUs boot

* power down the LDO feeding the CPU core and wait for it to settle

* program in the right set of LDO and power tree configuration for
  the CPU regulator to power up the core.  Unfortunately these are
  magic numbers that I've not found documented anywhere.

* (I think) power up the shared L2 cache connect if it isn't.

* Clamp the power into the core down; put the core into reset

* Unclamp the power rail; release reset; and then set the core to boot.

The MP core will then boot the bootloader/TZ firmware and then
will wait until an incoming interrupt kicks it to start @ mpentry.

Tested:

* IPQ4019, 4 CPUs

Release APs
CPU(3) applied BP hardening: not necessary
CPU(1) applied BP hardening: not necessary
CPU(2) applied BP hardening: not necessary

Reviewed by: andrew, manu, imp
Differential Revision: https://reviews.freebsd.org/D32723
2021-11-04 09:02:36 -07:00
.cirrus-ci Cirrus-CI: add some timing info on pkg install failure 2021-08-04 15:02:00 -04:00
.github [skip ci] fix syntax in CODEOWNERS 2021-07-22 10:58:54 -06:00
bin date: Capitalize seconds string in synopses 2021-11-03 14:09:36 +01:00
cddl zfs: merge openzfs/zfs@ec64fdb93 (master) into main 2021-10-21 15:06:06 +02:00
contrib strip/objcopy: handle empty file as unknown 2021-10-25 17:28:41 -04:00
crypto ssh: disble internal security key support in generated config.h 2021-11-01 15:45:37 -04:00
etc sh(1): make it the default shell for the root user 2021-10-20 09:34:05 +02:00
gnu libdialog: Bump shared library version to 10. 2021-10-27 09:30:24 -07:00
include Remove FreeBSD's local copy of the dmu_buf_hold_array() function 2021-10-13 11:01:01 -07:00
kerberos5 pkgbase: Create a FreeBSD-kerberos package 2021-09-07 10:23:14 +02:00
lib fexecve(2): allow O_PATH file descriptors opened without O_EXEC 2021-11-03 18:00:42 +02:00
libexec rtld: Print currently configured search path for libraries for -v 2021-10-25 20:41:53 +03:00
release release: Remove unused variables in azure Makefile 2021-11-04 16:42:38 +08:00
rescue Retire synchronous PPP kernel driver sppp(4). 2021-10-22 11:41:36 -07:00
sbin fsck_msdosfs: truncate directory entry when the head pointer is invalid. 2021-11-03 22:09:32 -07:00
secure ssh: move common Makefile boilerplate to a new ssh.mk 2021-11-03 19:38:05 -04:00
share vt: fix git mismerge 2021-11-03 16:20:41 -06:00
stand lualoader: fix the autoboot_delay countdown message 2021-10-26 11:24:29 -05:00
sys ipq401x: add MP core start-up path for the CPU regulator/clock gate used 2021-11-04 09:02:36 -07:00
targets Retire obsolete iscsi_initiator(4) 2021-10-26 16:17:35 -04:00
tests pf tests: route_to:icmp_nat_head requires scapy 2021-11-03 10:35:09 +01:00
tools Add descriptions for WITH_ASAN and WITH_UBSAN 2021-11-01 10:48:56 -04:00
usr.bin beep(1): Initial version of utility to create terminal beep via soundcard. 2021-11-04 09:00:46 +01:00
usr.sbin fstyp: fix build WITHOUT_ICONV 2021-11-02 14:54:45 -04:00
.arcconfig Remove history.immutable from .arcconfig 2021-04-13 12:36:25 +01:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.cirrus.yml Cirrus-CI: add a manually triggered arm64 task 2021-09-14 15:12:55 -04:00
.clang-format clang-format: Add bitset loop macros 2021-09-21 12:08:01 -04:00
.gitattributes Add a basic clang-format configuration file 2019-06-07 15:23:52 +00:00
.gitignore gitignore: Add .clangd and .ccls-cache 2021-06-04 16:56:08 +08:00
COPYRIGHT copyrights: Happy New Year 2021 2020-12-31 10:29:44 -05:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS [skip ci] volunteer to maintain POSIX AIO 2021-05-30 17:21:12 -06:00
Makefile Revert "Fix native-xtools build" 2021-08-03 10:00:28 -07:00
Makefile.inc1 Makefile.inc1: Remove mentions of removed target "update" 2021-10-24 21:07:45 +02:00
Makefile.libcompat ncurses: fix libcompat (lib32 for example) building 2021-10-04 14:16:32 +02:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc libdialog: Bump shared library version to 10. 2021-10-27 09:30:24 -07:00
README.md Whitespace cleanup 2021-03-12 19:57:58 +08:00
RELNOTES Add notes about vt beeping 2021-11-04 09:15:38 -06:00
UPDATING Retire synchronous PPP kernel driver sppp(4). 2021-10-22 11:41:36 -07:00

README.md

FreeBSD Source:

This is the top level of the FreeBSD source directory.

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

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), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.

Source Roadmap:

Directory Description
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 and gnu/COPYING.LIB 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.
sys/arch/conf Kernel configuration files. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries.
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 FreeBSD Handbook.