Commit Graph

5 Commits

Author SHA1 Message Date
Andrew Turner
2b5014f6fe Add ACPI support to the PSCI driver. This checks the Fixed ACPI Description
Table to find if the hardware supports PSCI, and if so what method the
kernel should use to interact with it.

Obtained from:	ABT Systems Ltd
Sponsored by:	The FreeBSD Foundation
2016-12-07 14:24:53 +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
6e3244f594 Start to support PSCI 1.0. For all the functions we currently support this
can be seen as the same as 0.2. There are changes with the data passed to
CPU_SUSPEND, however we don't yet use this call.

Sponsored by:	ABT Systems Ltd
2015-08-11 13:42:58 +00:00
Andrew Turner
7ad1ac7d6a Rework the PSCI cpu on code to allow it to work before device drivers have
started. This allows this functions to be used with the regular ARM SMP
initialisation sequence.
2015-05-24 11:08:06 +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