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  • Boot and Runtime Services
    • Title Page
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    • Contributors
    • Chapter 1. Introduction
    • Chapter 2. Recipes
    • Chapter 3. Hart Requirements
    • Chapter 4. SBI Requirements
    • Chapter 5. BRS-I UEFI Requirements
    • Chapter 6. BRS-I ACPI Requirements
    • Chapter 7. BRS-I SMBIOS Requirements
    • Bibliography
  • Functional Fixed Hardware
    • Title page
    • Copyright and License
    • Contributors
    • Change Log
    • Chapter 1. Introduction
    • Chapter 2. RISC-V FFH Resource Descriptor Encoding
    • Chapter 3. Use Cases
    • Appendix A. _LPI Object Examples
    • Appendix B. _CPC Object Examples
  • IO Mapping Table
    • Title Page
    • Copyright and License
    • Contributors
    • Changelog
    • Terms and Abbreviations
    • Chapter 1. Introduction
    • Chapter 2. RISC-V IO Mapping Table (RIMT)
    • Chapter 3. ID Mapping Examples
    • Bibliography
  • Platform Management Interface (RPMI)
    • Title Page
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    • Contributors
    • Changelog
    • Terms and Abbreviations
    • Chapter 1. Introduction
    • Chapter 2. Transport
    • Chapter 3. Messaging Protocol
    • Chapter 4. Service Groups
    • Chapter 5. Integration with SBI MPXY Extension
    • Bibliography
  • Semihosting
    • Title Page
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    • Contributors
    • Chapter 1. Introduction
    • Chapter 2. Semihosting Binary Interface
    • Bibliography
  • Supervisor Binary Interface
    • Title Page
    • Copyright and License
    • Contributors
    • Changelog
    • Chapter 1. Introduction
    • Chapter 2. Terms and Abbreviations
    • Chapter 3. Binary Encoding
    • Chapter 4. Base Extension (EID #0x10)
    • Chapter 5. Legacy Extensions (EIDs #0x00 - #0x0F)
    • Chapter 6. Timer Extension (EID #0x54494D45 "TIME")
    • Chapter 7. IPI Extension (EID #0x735049 "sPI: s-mode IPI")
    • Chapter 8. RFENCE Extension (EID #0x52464E43 "RFNC")
    • Chapter 9. Hart State Management Extension (EID #0x48534D "HSM")
    • Chapter 10. System Reset Extension (EID #0x53525354 "SRST")
    • Chapter 11. Performance Monitoring Unit Extension (EID #0x504D55 "PMU")
    • Chapter 12. Debug Console Extension (EID #0x4442434E "DBCN")
    • Chapter 13. System Suspend Extension (EID #0x53555350 "SUSP")
    • Chapter 14. CPPC Extension (EID #0x43505043 "CPPC")
    • Chapter 15. Nested Acceleration Extension (EID #0x4E41434C "NACL")
    • Chapter 16. Steal-time Accounting Extension (EID #0x535441 "STA")
    • Chapter 17. Supervisor Software Events Extension (EID #0x535345 "SSE")
    • Chapter 18. SBI Firmware Features Extension (EID #0x46574654 "FWFT")
    • Chapter 19. Debug Triggers Extension (EID #0x44425452 "DBTR")
    • Chapter 20. Message Proxy Extension (EID #0x4D505859 “MPXY”)
    • Chapter 21. Experimental SBI Extension Space (EIDs #0x08000000 - #0x08FFFFFF)
    • Chapter 22. Vendor Specific Extension Space (EIDs #0x09000000 - #0x09FFFFFF)
    • Firmware Specific Extension Space (EIDs #0x0A000000 - #0x0AFFFFFF)
    • References
  • UEFI PROTOCOL
    • Title page
    • Chapter 1. Copyright and License
    • Chapter 2. Contributors
    • Chapter 3. Introduction
    • RISCV_EFI_BOOT_PROTOCOL
    • Bibliography
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  • RISC-V Specifications
  • Platform Software Overview
  • Supervisor Binary Interface

21.1. Experimental SBI Extension Space (EIDs #0x08000000 - #0x08FFFFFF)

The SBI specification doesn’t define any rules for the EID management for experimental SBI extensions.

Chapter 20. Message Proxy Extension (EID #0x4D505859 “MPXY”) Chapter 22. Vendor Specific Extension Space (EIDs #0x09000000 - #0x09FFFFFF)
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