src/sys/dev/psci, branch releng/12.4FreeBSD source treehttps://cgit-dev.freebsd.org/src/atom?h=releng%2F12.42019-08-09T12:15:23ZMFC r345299:2019-08-09T12:15:23ZMichal Melounmmel@FreeBSD.org2019-08-09T12:15:23Zurn:sha1:4b3ce13cee17039aa6b6e85c6bf255dc70fbe4c2
PSCI: Don't take missing implementation of psci get_version() as fatal.
Minimalistic PSCI implementation in U-Boot doesn't implement get_version()
method for some SoC. In this case, use PSCI version declared by 'psci' node
in DT as fallback.
Fix a typo on the PSCI smc call wrapper.2018-08-14T13:56:49ZLuiz Otavio O Souzaloos@FreeBSD.org2018-08-14T13:56:49Zurn:sha1:217643e7da740fbe3d400c35b71d27a1630674a6
Looks good from: andrew
Sponsored by: Rubicon Communications, LLC (Netgate)
Use int for the pcpu_ssbd argument. This is included from userland and may2018-07-31T15:08:02ZAndrew Turnerandrew@FreeBSD.org2018-07-31T15:08:02Zurn:sha1:100a6d1905b1bb510020e6fe3a535ebf5fc395e8
not include the needed headers to get the bool definition.
Reported by: manu
Pointy hat to: andrew
Sponsored by: DARPA, AFRL
Implement the SSBD (CVE-2018-3639) workaround on arm642018-07-31T12:53:27ZAndrew Turnerandrew@FreeBSD.org2018-07-31T12:53:27Zurn:sha1:0594061ee6fbd63d428e70cab4c82171f87f7604
This calls into the Arm Trusted Firmware to enable and disable the
workaround for the Speculative Store Bypass Disable (SSBD) issue, also
known as Spectre Variant 4.
As this may have a large performance overhead, and how exploitable SSBD is
is unknown we follow the Linux lead of allowing the administrator to select
between always on, always off, or only enabled in the kernel, with the
latter being the default.
PR: 228955
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D15819
psci: Add \n at the end of printf2018-07-06T17:39:48ZEmmanuel Vadotmanu@FreeBSD.org2018-07-06T17:39:48Zurn:sha1:85ab1415fff6611bffefe1fc95c49f85324f1025
Add a \n at the end of the printf if no PSCI function was found otherwise
it mess up the console log.
Move the SMCCC SYSINIT later in the boot so the psci driver has attached.2018-06-20T10:57:29ZAndrew Turnerandrew@FreeBSD.org2018-06-20T10:57:29Zurn:sha1:1d802c646c24c39d94dd3bc84f8c22c60343b8f1
Sponsored by: DARPA, AFRL
Fix the SMCCC signatures, they are all 32-bit calls. This fixes SMCCC2018-06-20T10:02:50ZAndrew Turnerandrew@FreeBSD.org2018-06-20T10:02:50Zurn:sha1:95c4b3c7355301a8930fcc566c89967b54f99b04
version detection.
Sponsored by: DARPA, AFRL
Add the SMCCC return codes from ARM DEN 0070A.2018-06-13T15:41:22ZAndrew Turnerandrew@FreeBSD.org2018-06-13T15:41:22Zurn:sha1:09d1a08ddc4e9721093fd74281b77bf281dd2d08
While here add a comment with the document the function IDs come from.
Sponsored by: DARPA, AFRL
Add support for the ARM SMC Calling Convention (SMCCC). This is a method2018-06-13T15:32:00ZAndrew Turnerandrew@FreeBSD.org2018-06-13T15:32:00Zurn:sha1:f651b5252702fbcaf6d2f69b51e2c6b6f9bdd4a0
to call into the firmware in a similar way to the existing PSCI, and used
PSCI to detect when SMCCC is enabled.
There is a function ID space we can use. Currently we only support 3
functions in the ARM Architecture Calls region, however it is expected we
will expend these in the future.
Sponsored by: DARPA, AFRL
Move psci_call to a header file so we can use it in other files to2018-06-13T15:24:07ZAndrew Turnerandrew@FreeBSD.org2018-06-13T15:24:07Zurn:sha1:9e8cb3d22632005c21964d1264aa69c58ef1299c
communicate with the firmware.
Sponsored by: DARPA, AFRL