# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2008-2011 Freescale Semiconductor Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/crypto/fsl,sec-v4.0.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Freescale SEC 4
maintainers:
- '"Horia Geantă" <[email protected]>'
- Pankaj Gupta <[email protected]>
- Gaurav Jain <[email protected]>
description: |
NOTE: the SEC 4 is also known as Freescale's Cryptographic Accelerator
Accelerator and Assurance Module (CAAM).
SEC 4 h/w can process requests from 2 types of sources.
1. DPAA Queue Interface (HW interface between Queue Manager & SEC 4).
2. Job Rings (HW interface between cores & SEC 4 registers).
High Speed Data Path Configuration:
HW interface between QM & SEC 4 and also BM & SEC 4, on DPAA-enabled parts
such as the P4080. The number of simultaneous dequeues the QI can make is
equal to the number of Descriptor Controller (DECO) engines in a particular
SEC version. E.g., the SEC 4.0 in the P4080 has 5 DECOs and can thus
dequeue from 5 subportals simultaneously.
Job Ring Data Path Configuration:
Each JR is located on a separate 4k page, they may (or may not) be made visible
in the memory partition devoted to a particular core. The P4080 has 4 JRs, so
up to 4 JRs can be configured; and all 4 JRs process requests in parallel.
properties:
compatible:
oneOf:
- items:
- const: fsl,sec-v5.4
- const: fsl,sec-v5.0
- const: fsl,sec-v4.0
- items:
- enum:
- fsl,imx6ul-caam
- fsl,sec-v5.0
- const: fsl,sec-v4.0
- const: fsl,sec-v4.0
reg:
maxItems: 1
ranges:
maxItems: 1
'#address-cells':
enum: [1, 2]
'#size-cells':
enum: [1, 2]
clocks:
minItems: 1
maxItems: 4
clock-names:
minItems: 1
maxItems: 4
items:
enum: [mem, aclk, ipg, emi_slow]
dma-coherent: true
interrupts:
maxItems: 1
fsl,sec-era:
description: Defines the 'ERA' of the SEC device.
$ref: /schemas/types.yaml#/definitions/uint32
patternProperties:
'^jr@[0-9a-f]+$':
type: object
additionalProperties: false
description:
Job Ring (JR) Node. Defines data processing interface to SEC 4 across the
peripheral bus for purposes of processing cryptographic descriptors. The
specified address range can be made visible to one (or more) cores. The
interrupt defined for this node is controlled within the address range of
this node.
properties:
compatible:
oneOf:
- items:
- const: fsl,sec-v5.4-job-ring
- const: fsl,sec-v5.0-job-ring
- const: fsl,sec-v4.0-job-ring
- items:
- const: fsl,sec-v5.0-job-ring
- const: fsl,sec-v4.0-job-ring
- const: fsl,sec-v4.0-job-ring
reg:
maxItems: 1
interrupts:
maxItems: 1
fsl,liodn:
description:
Specifies the LIODN to be used in conjunction with the ppid-to-liodn
table that specifies the PPID to LIODN mapping. Needed if the PAMU is
used. Value is a 12 bit value where value is a LIODN ID for this JR.
This property is normally set by boot firmware.
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 0xfff
'^rtic@[0-9a-f]+$':
type: object
additionalProperties: false
description:
Run Time Integrity Check (RTIC) Node. Defines a register space that
contains up to 5 sets of addresses and their lengths (sizes) that will be
checked at run time. After an initial hash result is calculated, these
addresses are checked by HW to monitor any change. If any memory is
modified, a Security Violation is triggered (see SNVS definition).
properties:
compatible:
oneOf:
- items:
- const: fsl,sec-v5.4-rtic
- const: fsl,sec-v5.0-rtic
- const: fsl,sec-v4.0-rtic
- const: fsl,sec-v4.0-rtic
reg:
maxItems: 1
ranges:
maxItems: 1
interrupts:
maxItems: 1
'#address-cells':
const: 1
'#size-cells':
const: 1
patternProperties:
'^rtic-[a-z]@[0-9a-f]+$':
type: object
additionalProperties: false
description:
Run Time Integrity Check (RTIC) Memory Node defines individual RTIC
memory regions that are used to perform run-time integrity check of
memory areas that should not modified. The node defines a register
that contains the memory address & length (combined) and a second
register that contains the hash result in big endian format.
properties:
compatible:
oneOf:
- items:
- const: fsl,sec-v5.4-rtic-memory
- const: fsl,sec-v5.0-rtic-memory
- const: fsl,sec-v4.0-rtic-memory
- const: fsl,sec-v4.0-rtic-memory
reg:
items:
- description: RTIC memory address
- description: RTIC hash result
fsl,liodn:
description:
Specifies the LIODN to be used in conjunction with the
ppid-to-liodn table that specifies the PPID to LIODN mapping.
Needed if the PAMU is used. Value is a 12 bit value where value
is a LIODN ID for this JR. This property is normally set by boot
firmware.
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 0xfff
fsl,rtic-region:
description:
Specifies the HW address (36 bit address) for this region
followed by the length of the HW partition to be checked;
the address is represented as a 64 bit quantity followed
by a 32 bit length.
$ref: /schemas/types.yaml#/definitions/uint32-array
required:
- compatible
- reg
- ranges
additionalProperties: false
examples:
- |
crypto@300000 {
compatible = "fsl,sec-v4.0";
#address-cells = <1>;
#size-cells = <1>;
reg = <0x300000 0x10000>;
ranges = <0 0x300000 0x10000>;
interrupts = <92 2>;
jr@1000 {
compatible = "fsl,sec-v4.0-job-ring";
reg = <0x1000 0x1000>;
interrupts = <88 2>;
};
jr@2000 {
compatible = "fsl,sec-v4.0-job-ring";
reg = <0x2000 0x1000>;
interrupts = <89 2>;
};
jr@3000 {
compatible = "fsl,sec-v4.0-job-ring";
reg = <0x3000 0x1000>;
interrupts = <90 2>;
};
jr@4000 {
compatible = "fsl,sec-v4.0-job-ring";
reg = <0x4000 0x1000>;
interrupts = <91 2>;
};
rtic@6000 {
compatible = "fsl,sec-v4.0-rtic";
#address-cells = <1>;
#size-cells = <1>;
reg = <0x6000 0x100>;
ranges = <0x0 0x6100 0xe00>;
rtic-a@0 {
compatible = "fsl,sec-v4.0-rtic-memory";
reg = <0x00 0x20>, <0x100 0x80>;
};
rtic-b@20 {
compatible = "fsl,sec-v4.0-rtic-memory";
reg = <0x20 0x20>, <0x200 0x80>;
};
rtic-c@40 {
compatible = "fsl,sec-v4.0-rtic-memory";
reg = <0x40 0x20>, <0x300 0x80>;
};
rtic-d@60 {
compatible = "fsl,sec-v4.0-rtic-memory";
reg = <0x60 0x20>, <0x500 0x80>;
};
};
};
...
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