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Change Log

Version 3.0​

  • Update the document state to Ratified

Version 3.0-rc8​

  • Clarifications around legacy extension and SSE events

Version 3.0-rc7​

  • Update the document state to Frozen.

Version 3.0-rc6​

  • Clarification for SSE errors.
  • Formatting changes.
  • Update the preamble.

Version 3.0-rc5​

  • Update doc-resourses
  • Clarifications/minor semantic fixes in mpxy/sse.

Version 3.0-rc4​

  • Added landing pad and double trap related bits to the SSE extension.
  • Several clarifications in SSE and MPXY extensions.
  • Added a new function to retrieve the shared memory size in MPXY extension.

Version 3.0-rc3​

  • Added low priority RAS events in SSE.
  • Miscallenous clarification around reserved bits, fwft, notification events.
  • Added a dedicated error code for fwft set denial due to lock status.

Version 3.0-rc1/rc2​

  • Added SBI PMU event info function and new raw event type
  • Added SBI MPXY extension
  • Added error code SBI_ERR_TIMEOUT
  • Added error code SBI_ERR_IO
  • Added sse mask/unmask function and pointer masking bit in fwft
  • Clarify SBI IPI and RFENCE error codes
  • Clarify the description of the set_timer function
  • Added SBI DBTR extension
  • Added SBI FWFT extension
  • Added SBI SSE extension
  • Added error code SBI_ERR_BAD_RANGE
  • Added error code SBI_ERR_INVALID_STATE

Version 2.0​

  • Clarification around SBI PMU set memory function
  • Base extension function name typo fix
  • Upate the document state to Ratified

Version 2.0-rc8​

  • Clarfications STA extension and counter index in the pmu snapshot.

Version 2.0-rc7​

  • Few clarfications around system suspend and pmu snapshot.

Version 2.0-rc6​

  • Few clarifications around rfence extensions
  • Marks public review period complete.

Version 2.0-rc5​

  • Update the document state to Frozen

Version 2.0-rc4​

  • Added flags parameter to sbi_pmu_snapshot_set_shmem()
  • Return error code SBI_ERR_NO_SHMEM in SBI PMU extension wherever applicable
  • Made flags parameter of sbi_steal_time_set_shmem() as unsigned long
  • Split the specification into multiple adoc files
  • Add more clarification for firmware/vendor/experimental extension space.
  • Fix ambiguous usage of normative statements.

Version 2.0-rc3​

  • CI support added
  • Fix revmark in the makefile.
  • Few minor cleanups.

Version 2.0-rc2​

  • Added clarification for SUSP, NACL & STA extensions.
  • Standardization of hart usage.
  • Added an error code in SBI DBCN extension.

Version 2.0-rc1​

  • Added common description for shared memory physical address range parameter
  • Added SBI debug console extension
  • Relaxed the counter width requirement on SBI PMU firmware counters
  • Added sbi_pmu_counter_fw_read_hi() in SBI PMU extension
  • Reserved space for SBI implementation specific firmware events
  • Added SBI system suspend extension
  • Added SBI CPPC extension
  • Clarified that an SBI extension can be partially implemented only if it defines a mechanism to discover implemented SBI functions
  • Added error code SBI_ERR_NO_SHMEM
  • Added SBI nested acceleration extension
  • Added common description for a virtual hart
  • Added SBI steal-time accounting extension
  • Added SBI PMU snapshot extension

Version 1.0.0​

  • Updated the version for ratification

Version 1.0-rc3​

  • Updated the calling convention
  • Fixed a typo in PMU extension
  • Added a abbreviation table

Version 1.0-rc2​

  • Update to RISC-V formatting
  • Improved the introduction
  • Removed all references to RV32

Version 1.0-rc1​

  • A typo fix

Version 0.3.0​

  • Few typo fixes
  • Updated the LICENSE with detailed text instead of a hyperlink

Version 0.3-rc1​

  • Improved document styling and naming conventions
  • Added SBI system reset extension
  • Improved SBI introduction section
  • Improved documentation of SBI hart state management extension
  • Added suspend function to SBI hart state management extension
  • Added performance monitoring unit extension
  • Clarified that an SBI extension shall not be partially implemented

Version 0.2​

  • The entire v0.1 SBI has been moved to the legacy extension, which is now an optional extension. This is technically a backwards-incompatible change because the legacy extension is optional and v0.1 of the SBI doesn’t allow probing, but it’s as good as we can do.