| Message ID | 20230929142852.578394-4-gatien.chevallier@foss.st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce STM32 Firewall framework | expand |
On 10/2/23 20:30, Rob Herring wrote: > On Fri, Sep 29, 2023 at 04:28:44PM +0200, Gatien Chevallier wrote: >> Document RIFSC (RIF security controller). RIFSC is a firewall controller >> composed of different kinds of hardware resources. >> >> Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> >> --- >> >> Changes in V5: >> - Renamed feature-domain* to access-control* >> >> Changes in V2: >> - Corrected errors highlighted by Rob's robot >> - No longer define the maxItems for the "feature-domains" >> property >> - Fix example (node name, status) >> - Declare "feature-domain-names" as an optional >> property for child nodes >> - Fix description of "feature-domains" property >> >> .../bindings/bus/st,stm32mp25-rifsc.yaml | 105 ++++++++++++++++++ >> 1 file changed, 105 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml >> >> diff --git a/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml b/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml >> new file mode 100644 >> index 000000000000..c28fceff3036 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml >> @@ -0,0 +1,105 @@ >> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >> +%YAML 1.2 >> +--- >> +$id: http://devicetree.org/schemas/bus/st,stm32mp25-rifsc.yaml# >> +$schema: http://devicetree.org/meta-schemas/core.yaml# >> + >> +title: STM32 Resource isolation framework security controller >> + >> +maintainers: >> + - Gatien Chevallier <gatien.chevallier@foss.st.com> >> + >> +description: | >> + Resource isolation framework (RIF) is a comprehensive set of hardware blocks >> + designed to enforce and manage isolation of STM32 hardware resources like >> + memory and peripherals. >> + >> + The RIFSC (RIF security controller) is composed of three sets of registers, >> + each managing a specific set of hardware resources: >> + - RISC registers associated with RISUP logic (resource isolation device unit >> + for peripherals), assign all non-RIF aware peripherals to zero, one or >> + any security domains (secure, privilege, compartment). >> + - RIMC registers: associated with RIMU logic (resource isolation master >> + unit), assign all non RIF-aware bus master to one security domain by >> + setting secure, privileged and compartment information on the system bus. >> + Alternatively, the RISUP logic controlling the device port access to a >> + peripheral can assign target bus attributes to this peripheral master port >> + (supported attribute: CID). >> + - RISC registers associated with RISAL logic (resource isolation device unit >> + for address space - Lite version), assign address space subregions to one >> + security domains (secure, privilege, compartment). >> + >> +properties: >> + compatible: >> + contains: >> + const: st,stm32mp25-rifsc >> + >> + reg: >> + maxItems: 1 >> + >> + "#address-cells": >> + const: 1 >> + >> + "#size-cells": >> + const: 1 >> + >> + ranges: true >> + >> + "#access-controller-cells": >> + const: 1 > > You should define what the cells contain here. > Ok, I'll do this as well for the ETZPC binding >> + >> + access-control-provider: true >> + Will be dropped, ditto for ETZPC. >> +patternProperties: >> + "^.*@[0-9a-f]+$": >> + description: Peripherals >> + type: object > > additionalProperties: true > >> + properties: >> + access-controller: >> + minItems: 1 >> + description: >> + The phandle of the firewall controller of the peripheral and the >> + platform-specific firewall ID of the peripheral. >> + >> + access-controller-names: >> + minItems: 1 > > Drop all this. You have to define these in the specific device schemas > anyways. > I guess that: patternProperties: "^.*@[0-9a-f]+$": description: Peripherals type: object required: - access-controller is sufficient if I describe what the content of the cells will be in the "#access-controller-cells" above. It avoids redundant information. I'll make the change for V6, thank you. Best regards, Gatien >> + >> + required: >> + - access-controller >> + >> +required: >> + - compatible >> + - reg >> + - "#address-cells" >> + - "#size-cells" >> + - access-control-provider >> + - "#access-controller-cells" >> + - ranges >> + >> +additionalProperties: false >> + >> +examples: >> + - | >> + // In this example, the usart2 device refers to rifsc as its domain >> + // controller. >> + // Access rights are verified before creating devices. >> + >> + #include <dt-bindings/interrupt-controller/arm-gic.h> >> + >> + rifsc: bus@42080000 { >> + compatible = "st,stm32mp25-rifsc"; >> + reg = <0x42080000 0x1000>; >> + #address-cells = <1>; >> + #size-cells = <1>; >> + access-control-provider; >> + #access-controller-cells = <1>; >> + ranges; >> + >> + usart2: serial@400e0000 { >> + compatible = "st,stm32h7-uart"; >> + reg = <0x400e0000 0x400>; >> + interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>; >> + clocks = <&ck_flexgen_08>; >> + access-controller = <&rifsc 32>; >> + }; >> + }; >> -- >> 2.25.1 >>
diff --git a/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml b/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml new file mode 100644 index 000000000000..c28fceff3036 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml @@ -0,0 +1,105 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bus/st,stm32mp25-rifsc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STM32 Resource isolation framework security controller + +maintainers: + - Gatien Chevallier <gatien.chevallier@foss.st.com> + +description: | + Resource isolation framework (RIF) is a comprehensive set of hardware blocks + designed to enforce and manage isolation of STM32 hardware resources like + memory and peripherals. + + The RIFSC (RIF security controller) is composed of three sets of registers, + each managing a specific set of hardware resources: + - RISC registers associated with RISUP logic (resource isolation device unit + for peripherals), assign all non-RIF aware peripherals to zero, one or + any security domains (secure, privilege, compartment). + - RIMC registers: associated with RIMU logic (resource isolation master + unit), assign all non RIF-aware bus master to one security domain by + setting secure, privileged and compartment information on the system bus. + Alternatively, the RISUP logic controlling the device port access to a + peripheral can assign target bus attributes to this peripheral master port + (supported attribute: CID). + - RISC registers associated with RISAL logic (resource isolation device unit + for address space - Lite version), assign address space subregions to one + security domains (secure, privilege, compartment). + +properties: + compatible: + contains: + const: st,stm32mp25-rifsc + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + + ranges: true + + "#access-controller-cells": + const: 1 + + access-control-provider: true + +patternProperties: + "^.*@[0-9a-f]+$": + description: Peripherals + type: object + properties: + access-controller: + minItems: 1 + description: + The phandle of the firewall controller of the peripheral and the + platform-specific firewall ID of the peripheral. + + access-controller-names: + minItems: 1 + + required: + - access-controller + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + - access-control-provider + - "#access-controller-cells" + - ranges + +additionalProperties: false + +examples: + - | + // In this example, the usart2 device refers to rifsc as its domain + // controller. + // Access rights are verified before creating devices. + + #include <dt-bindings/interrupt-controller/arm-gic.h> + + rifsc: bus@42080000 { + compatible = "st,stm32mp25-rifsc"; + reg = <0x42080000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + access-control-provider; + #access-controller-cells = <1>; + ranges; + + usart2: serial@400e0000 { + compatible = "st,stm32h7-uart"; + reg = <0x400e0000 0x400>; + interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&ck_flexgen_08>; + access-controller = <&rifsc 32>; + }; + };
Document RIFSC (RIF security controller). RIFSC is a firewall controller composed of different kinds of hardware resources. Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> --- Changes in V5: - Renamed feature-domain* to access-control* Changes in V2: - Corrected errors highlighted by Rob's robot - No longer define the maxItems for the "feature-domains" property - Fix example (node name, status) - Declare "feature-domain-names" as an optional property for child nodes - Fix description of "feature-domains" property .../bindings/bus/st,stm32mp25-rifsc.yaml | 105 ++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/st,stm32mp25-rifsc.yaml