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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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fbfb649870
Convert intel,stratix10-svc service layer devicetree binding file from freeform format to json-schema. Also added DT binding for optional stratix10-soc FPGA manager child node. Signed-off-by: Mahesh Rao <mahesh.rao@intel.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
94 lines
2.7 KiB
YAML
94 lines
2.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/firmware/intel,stratix10-svc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Intel Service Layer Driver for Stratix10 SoC
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maintainers:
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- Dinh Nguyen <dinguyen@kernel.org>
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- Mahesh Rao <mahesh.rao@altera.com>
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description: >
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Intel Stratix10 SoC is composed of a 64 bit quad-core ARM Cortex A53 hard
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processor system (HPS) and Secure Device Manager (SDM). When the FPGA is
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configured from HPS, there needs to be a way for HPS to notify SDM the
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location and size of the configuration data. Then SDM will get the
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configuration data from that location and perform the FPGA configuration.
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To meet the whole system security needs and support virtual machine requesting
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communication with SDM, only the secure world of software (EL3, Exception
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Layer 3) can interface with SDM. All software entities running on other
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exception layers must channel through the EL3 software whenever it needs
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service from SDM.
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Intel Stratix10 service layer driver, running at privileged exception level
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(EL1, Exception Layer 1), interfaces with the service providers and provides
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the services for FPGA configuration, QSPI, Crypto and warm reset. Service layer
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driver also manages secure monitor call (SMC) to communicate with secure monitor
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code running in EL3.
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properties:
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compatible:
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enum:
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- intel,stratix10-svc
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- intel,agilex-svc
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method:
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description: |
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Supervisory call method to be used to communicate with the
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secure service layer.
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Permitted values are:
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- "smc" : SMC #0, following the SMCCC
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- "hvc" : HVC #0, following the SMCCC
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$ref: /schemas/types.yaml#/definitions/string-array
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enum:
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- smc
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- hvc
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memory-region:
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maxItems: 1
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description:
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reserved memory region for the service layer driver to
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communicate with the secure device manager.
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fpga-mgr:
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$ref: /schemas/fpga/intel,stratix10-soc-fpga-mgr.yaml
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description: Optional child node for fpga manager to perform fabric configuration.
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required:
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- compatible
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- method
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- memory-region
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additionalProperties: false
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examples:
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- |
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reserved-memory {
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#address-cells = <2>;
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#size-cells = <2>;
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service_reserved: svcbuffer@0 {
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compatible = "shared-dma-pool";
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reg = <0x0 0x0 0x0 0x1000000>;
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alignment = <0x1000>;
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no-map;
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};
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};
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firmware {
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svc {
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compatible = "intel,stratix10-svc";
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method = "smc";
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memory-region = <&service_reserved>;
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fpga-mgr {
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compatible = "intel,stratix10-soc-fpga-mgr";
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};
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};
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};
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