1SCP-firmware - version 2.15 2=========================== 3 4Copyright (c) 2011-2024, Arm Limited. All rights reserved. 5 6References 7---------- 8 9[1] Power Control System Architecture - DEN0050C (Please contact Arm directly to 10obtain a copy of this document) 11 12[2] [System Control and Management Interface - DEN0056A](https://developer.arm.com/documentation/den0056/d/) 13 14[3] Power Policy Unit - DEN0051C (Please contact Arm directly to obtain a copy 15of this document) 16 17[4] [System Guidance](https://developer.arm.com/products/system-design/system-guidance) 18 19Introduction 20------------ 21 22There is a strong trend in the industry to provide microcontrollers in systems 23to abstract various power, or other system management tasks, away from 24Application Processors (APs). The Power Control System Architecture (PCSA) [1] 25describes how systems can be built following this approach. 26 27The PCSA defines the concept of the System Control Processor (SCP), a dedicated 28processor that is used to abstract power and system management tasks away from 29application processors. 30 31Similar to the SCP, the Manageability Control Processor (MCP) follows the same 32approach with the goal of providing a management entry-point to the System on 33Chip (SoC) where manageability is required, such as on a SoC targeting servers. 34 35SCP-firmware provides a software reference implementation for the System Control 36Processor (SCP) and Manageability Control Processor (MCP) components found in 37several Arm Compute Sub-Systems. 38 39Functionality 40------------- 41 42- Initialization of the system to enable application core boot 43- Runtime services: 44 - Power domain management 45 - System power management 46 - Performance domain management (Dynamic Voltage and Frequency Scaling) 47 - Clock management 48 - Sensor management 49 - Reset domain management 50 - Voltage domain management 51- System Control and Management Interface (SCMI, platform-side) 52- Support for the GNU Arm Embedded, Arm Compiler 6 and LLVM toolchains 53- Support for platforms with several control processors 54- Interactive debugging (with Command Line Interface) 55 56Platforms 57--------- 58 59Various builds of the release have been tested on the following ARM Fixed 60Virtual Platforms (FVPs or boards where possible): 61 62- System Guidance for Mobile platform SGM-775 (Version 11.19 Build 30) 63- System Guidance for Infrastruture SGI-575 (Version 11.19 Build 30) 64- Neoverse N1 reference design (Version 11.6 Build 45) 65- System Guidance for Mobile platform SGM-776 (Version 11.19 Build 30) 66- Juno reference design (Please contact Arm directly to obtain the Juno FVP) 67- RD-N1-Edge Dual-Chip reference design 68 (Please contact Arm directly to obtain the RdN1EdgeX2 FVP) 69- RD-V1 reference design (Please contact Arm directly to obtain the RD_V1 FVP) 70- RD-V1-MC reference design 71 (Please contact Arm directly to obtain the RD_V1_Multichip FVP) 72- Renesas R-Car platform 73- Morello (Please see Arm's Ecosystem FVPs Developer page) 74- Total Compute (tc2) platform 75 (Please contact Arm directly to obtain the TC2 FVP) 76 77License 78------- 79 80The software is provided under a [BSD-3-Clause license](https://spdx.org/licenses/BSD-3-Clause.html). 81 82The license for CMock can be found in contrib/cmock/git/LICENSE.txt. 83 84The license for unity framework can be found in contrib/cmock/git/vendor/unity/LICENSE.txt. 85 86Getting started 87--------------- 88 89See user_guide.md for instructions on how to get, install, build and use 90SCP-firmware on supported Arm platforms. 91 92CMake 93----- 94 95SCP-firmware now supports building with CMake. See doc/cmake_readme.md for 96details. 97 98Feedback and Support 99-------------------- 100 101Arm welcomes any feedback on SCP-firmware. Please contact the maintainers (see 102maintainers.md). 103 104To request support please contact Arm by email at support@arm.com. Arm licensees 105may also contact Arm via their partner managers. 106 107Security issues reporting 108------------------------- 109 110To report any security issue please contact Arm by email at arm-security@arm.com. 111 112More details can be found at [Arm Developer website](https://developer.arm.com/support/arm-security-updates/report-security-vulnerabilities). 113