kernel/drivers/firmware/psci.c, branch linux-4.16.y

firmware/psci: Expose SMCCC version through psci_ops

2018-02-06T22:54:11Z

Since PSCI 1.0 allows the SMCCC version to be (indirectly) probed, let's do that at boot time, and expose the version of the calling convention as part of the psci_ops structure. Acked-by: Lorenzo Pieralisi Reviewed-by: Robin Murphy Tested-by: Ard Biesheuvel Signed-off-by: Marc Zyngier Signed-off-by: Catalin Marinas

firmware/psci: Expose PSCI conduit

2018-02-06T22:54:09Z

In order to call into the firmware to apply workarounds, it is useful to find out whether we're using HVC or SMC. Let's expose this through the psci_ops. Acked-by: Lorenzo Pieralisi Reviewed-by: Robin Murphy Tested-by: Ard Biesheuvel Signed-off-by: Marc Zyngier Signed-off-by: Catalin Marinas

drivers/firmware: Expose psci_get_version through psci_ops structure

2018-01-08T18:43:38Z

Entry into recent versions of ARM Trusted Firmware will invalidate the CPU branch predictor state in order to protect against aliasing attacks. This patch exposes the PSCI "VERSION" function via psci_ops, so that it can be invoked outside of the PSCI driver where necessary. Acked-by: Lorenzo Pieralisi Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas

firmware: Convert to using %pOF instead of full_name

2017-08-16T15:19:50Z

Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring Acked-by: Sudeep Holla Cc: Mark Rutland Cc: Lorenzo Pieralisi Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Arnd Bergmann

drivers: firmware: psci: Use __pa_symbol for cpu_resume

2017-01-26T12:15:07Z

If CONFIG_DEBUG_VIRTUAL=y, during s2ram: virt_to_phys used for non-linear address: ffffff80085db280 (cpu_resume+0x0/0x20) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1628 at arch/arm64/mm/physaddr.c:14 __virt_to_phys+0x28/0x60 ... [] __virt_to_phys+0x28/0x60 [] psci_system_suspend+0x20/0x44 [] cpu_suspend+0x3c/0x68 [] psci_system_suspend_enter+0x18/0x20 [] suspend_devices_and_enter+0x3f8/0x7e8 [] pm_suspend+0x544/0x5f4 Fixes: 1a08e3d9e0ac4577 ("drivers: firmware: psci: Use __pa_symbol for kernel symbol") Acked-by: Mark Rutland Acked-by: Laura Abbott Signed-off-by: Geert Uytterhoeven Signed-off-by: Will Deacon

drivers: firmware: psci: Use __pa_symbol for kernel symbol

2017-01-11T13:56:50Z

__pa_symbol is technically the macro that should be used for kernel symbols. Switch to this as a pre-requisite for DEBUG_VIRTUAL which will do bounds checking. Reviewed-by: Mark Rutland Tested-by: Mark Rutland Signed-off-by: Laura Abbott Signed-off-by: Will Deacon

drivers: psci: Allow PSCI node to be disabled

2016-11-25T22:26:05Z

Allow disabling PSCI support (mostly for testing purposes) by setting the status property to "disabled". This makes the node behave in much the same way as proper device nodes. Signed-off-by: Thierry Reding Signed-off-by: Lorenzo Pieralisi Acked-by: Mark Rutland Signed-off-by: Arnd Bergmann

drivers: firmware: psci: initialise idle states using ACPI LPI

2016-07-21T21:29:38Z

This patch adds support for initialisation of PSCI CPUIdle states from Low Power Idle(_LPI) entries in the ACPI tables when acpi is enabled. Acked-by: Lorenzo Pieralisi Signed-off-by: Sudeep Holla Signed-off-by: Rafael J. Wysocki

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2016-05-18T20:14:02Z

Pull ARM SoC driver updates from Arnd Bergmann: "Driver updates for ARM SoCs, these contain various things that touch the drivers/ directory but got merged through arm-soc for practical reasons. For the most part, this is now related to power management controllers, which have not yet been abstracted into a separate subsystem, and typically require some code in drivers/soc or arch/arm to control the power domains. Another large chunk here is a rework of the NVIDIA Tegra USB3.0 support, which was surprisingly tricky and took a long time to get done. Finally, reset controller handling as always gets merged through here as well" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits) arm-ccn: Enable building as module soc/tegra: pmc: Add generic PM domain support usb: xhci: tegra: Add Tegra210 support usb: xhci: Add NVIDIA Tegra XUSB controller driver dt-bindings: usb: xhci-tegra: Add Tegra210 XUSB controller support dt-bindings: usb: Add NVIDIA Tegra XUSB controller binding PCI: tegra: Support per-lane PHYs dt-bindings: pci: tegra: Update for per-lane PHYs phy: tegra: Add Tegra210 support phy: Add Tegra XUSB pad controller support dt-bindings: phy: tegra-xusb-padctl: Add Tegra210 support dt-bindings: phy: Add NVIDIA Tegra XUSB pad controller binding phy: core: Allow children node to be overridden clk: tegra: Add interface to enable hardware control of SATA/XUSB PLLs drivers: firmware: psci: make two helper functions inline soc: renesas: rcar-sysc: Add support for R-Car H3 power areas soc: renesas: rcar-sysc: Add support for R-Car E2 power areas soc: renesas: rcar-sysc: Add support for R-Car M2-N power areas soc: renesas: rcar-sysc: Add support for R-Car M2-W power areas soc: renesas: rcar-sysc: Add support for R-Car H2 power areas ...

Merge branch 'pm-cpuidle'

2016-05-16T12:31:03Z

* pm-cpuidle: cpuidle: Replace ktime_get() with local_clock() drivers: firmware: psci: use const and __initconst for psci_cpuidle_ops soc: qcom: spm: Use const and __initconst for qcom_cpuidle_ops ARM: cpuidle: constify return value of arm_cpuidle_get_ops() ARM: cpuidle: add const qualifier to cpuidle_ops member in structures intel_idle: add BXT support cpuidle: Indicate when a device has been unregistered