coreboot.git - my copy of coreboot

Age	Commit message (Collapse)	Author
2022-02-09	drivers/pcie/generic: Add new pcie generic chip driver	Tim Wawrzynczak
	This new chip driver will be used for attaching ACPI properties to PCIe endpoints. The first property it supports is "UntrustedDevice." This property can be used by a payload to, e.g., restrict the device to its own IOMMU domain for security purposes. The new property is added by adding a _DSD and an integer property set to 1. Example of the property from google/brya0: Scope (\_SB.PCI0.RP01) { Device (DEV0) { Name (_ADR, 0x0000000000000000) // _ADR: Address Name (_DSD, Package (0x02) // _DSD: Device-Specific Data { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */, Package (0x01) { Package (0x02) { "UntrustedDevice", One } } }) } } BUG=b:215424986 TEST=boot patch train on google/brya0, dump SSDT, see above for snippet Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: I53986614dcbf4d10a6bb4010e131f5ff5a9d25cf Reviewed-on: https://review.coreboot.org/c/coreboot/+/61627 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
2021-06-07	drivers/pcie/rtd3/device: Add PCIe RTD3 driver	Raul E Rangel
	This driver was inspired from soc/intel/common/block/pci/rtd3. I decided to copy and modify it because the Intel driver has a lot of Intel specific code. This driver has been stripped down to only provide a power resource and set the StorageD3Enable property. This driver is SoC agnostic and does not handle suspending the actual PCIe root port. That should be implemented by an SoC specific driver. This is required for Guybrush to suspend/resume properly because the NVMe power is tied to the S0 power rails, so the kernel needs to place the device into D3. BUG=b:184617186 TEST=Guybrush is able to suspend/resume properly. Also see power resource get enabled / disabled. [ 56.075559] power-0416 __acpi_power_off : Power resource [RTD3] turned off [ 56.075562] device_pm-0279 device_set_power : Device [PXSX] transitioned to D3cold [ 56.075567] pci_pm_suspend_noirq: nvme 0000:02:00.0: PCI PM: Suspend power state: D3cold [ 56.075569] nvme 0000:02:00.0: pci_pm_suspend_noirq+0x0/0x413 returned 0 after 15978 usecs [ 123.464874] nvme 0000:02:00.0: calling pci_pm_resume_noirq+0x0/0x11d @ 7, parent: 0000:00:02.4 [ 123.464891] acpi_device_set_power: ACPI: \_SB_.PCI0.GP14.PXSX: Power state change: D3cold -> D0 [ 123.464982] power-0360 __acpi_power_on : Power resource [RTD3] turned on [ 123.464984] device_pm-0279 device_set_power : Device [PXSX] transitioned to D0 [ 123.465039] nvme 0000:02:00.0: pci_pm_resume_noirq+0x0/0x11d returned 0 after 158 usecs Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: I2adfc925183ff7a19ab97e89212bc87c40d552d0 Reviewed-on: https://review.coreboot.org/c/coreboot/+/54966 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>