Commit graph

7 commits

Author SHA1 Message Date
Andrew Turner
9e8cb3d226 Move psci_call to a header file so we can use it in other files to
communicate with the firmware.

Sponsored by:	DARPA, AFRL
2018-06-13 15:24:07 +00:00
Andrew Turner
5add83935a Add a handler for the PSCI_FEATURES function. This needs PSCI 1.0, so
check for this, returning an error if the version is too old.

Sponsored by:	DARPA, AFRL
2018-06-13 12:33:47 +00:00
Andrew Turner
811880f2a4 Add the PSCI_FEATURES function ID. This is found in PSCI 1.0 and is used
to query if a given function is implemented and its features.

Sponsored by:	DARPA, AFRL
2018-06-13 12:26:37 +00:00
Andrew Turner
8ab09f8a4e Add a function to find the PSCI version the firmware implements from
outside the PSCI driver.

MFC after:	1 week
Sponsored by:	DARPA, AFRL
2018-01-09 15:57:09 +00:00
Andrew Turner
574a7c6c47 Call the PSCI reset from cpu_reset on arm64. When rebooting from DDB the
kernel calls this directly so the event handler is not called, meaning
the computer fails to reboot.

Tested by:	cognet
MFC after:	1 week
Sponsored by:	DARPA, AFRL
2017-04-24 11:06:10 +00:00
Andrew Turner
c2dd354bf4 Create a new PSCI error code and use it to signal that starting the CPU is
impossible as the PSCI firmware is missing.

Sponsored by:	ABT Systmes Ltd
2016-10-25 14:18:27 +00:00
Andrew Turner
46b1fe9224 Add a driver for the ARM Power State Coordination Interface (PSCI). This
handles versions 0.1 and 0.2 of the standard on 32-bit ARM.

With this driver we can shutdown in QEMU. Further work is needed to
turn secondary cores on on boot and to support later revisions of the
specification.

Submitted by:	Robin Randhawa <Robin.Randhawa at ARM.com>
Sponsored by:	The FreeBSD Foundation
2015-04-12 13:00:58 +00:00