Add support for calling poweroff in case of psci is wired.
Based on the same solution as is used for reset.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Move all logic in to fwcall.c as other ARMs implement poweroff
via PMIC]
Signed-off-by: Tom Rini <trini@konsulko.com>
Compiler attributes are more commonly __foo style tags rather than big
upper case eye sores like EFI_RUNTIME_TEXT.
Simon Glass felt quite strongly about this, so this patch converts our
existing defines over to more eye friendly ones.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Now that we have generic PSCI reset and shutdown support in place, we can
advertise those as EFI Run Time Services, allowing efi applications and
OSs to reset and shut down systems.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Most armv8 systems have PSCI support enabled in EL3, either through
ARM Trusted Firmware or other firmware.
On these systems, we do not need to implement system reset manually,
but can instead rely on higher level firmware to deal with it.
The exclude list seems excessive right now, but NXP is working on
providing an in-tree PSCI implementation, so that all NXP systems
can eventually use PSCI as well.
Signed-off-by: Alexander Graf <agraf@suse.de>
[agraf: fix meson]
Reviewed-by: Simon Glass <sjg@chromium.org>
Using PSCI you can not only reset the system, you can also shut it down!
This patch exposes a function to do exactly that to whatever code wants
to make use of it.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
All systems that are running on armv8 are running bare metal with firmware
that implements PSCI running in EL3. That means we don't really need to expose
the hypercall variants of them.
This patch leaves the code in, but makes the code explicit enough to have the
compiler optimize it out. With this we don't need to worry about hvc vs smc
calling convention when calling psci helper functions.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a psci_system_reset() which calls the SYSTEM_RESET function of
PSCI 0.2 and can be used by boards that support it to implement
reset_cpu().
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit adds functions issuing calls to secure monitor or
hypervisore. This allows using services such as Power State
Coordination Interface (PSCI) provided by firmware, e.g. ARM
Trusted Firmware (ATF)
The SMC call can destroy all registers declared temporary by the
calling conventions. The clobber list is "x0..x17" because of
this
Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Michal Simek
Alexander Graf
Beniamino Galvani
Sergey Temerkhanov