Intel® Stratix® 10 DX Device Errata

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ID 683249
Date 11/01/2022
Public
Document Table of Contents
Document Table of Contents x
1. About this Document 2. Intel® -Specific Errata for the Intel® Stratix® 10 DX Devices 3. Arm* Cortex*-A53 MPCore* and CoreSight* Errata 4. Document Revision History for Intel® Stratix® 10 DX Device Errata
2. Intel® -Specific Errata for the Intel® Stratix® 10 DX Devices x
2.1. FPGA 2.2. Device Power Supply, Core and I/O 2.3. P-Tile 2.4. Hard Processor System
2.2. Device Power Supply, Core and I/O x
2.2.1. M20K Simple Quad-Port Mode Support
2.3. P-Tile x
2.3.1. Root Port Legacy Interrupt Status register INTx is stuck HIGH 2.3.2. TLP Bypass Error Status Register may Report Receiver Errors 2.3.3. PCIe CV and PTC Tests in the PCI-SIG Compliance Test Suite may Fail 2.3.4. Returning Incorrect Function Number 2.3.5. Incorrect Return Value for Power Management Register 2.3.6. Register Implementation while using the SR-IOV Feature 2.3.7. Register Implementation while using the Multi-function Feature 2.3.8. Unsuccessful TX Equalization 2.3.9. Link Does Not Degrade With Corrupt Lanes 2.3.10. Warm Reset or PERST Assertion Clears the Sticky Registers
2.4. Hard Processor System x
2.4.1. HPS Stops on the First Read Request to SDRAM 2.4.2. Write Data Can Appear at an AXI Interface before the Write Address, which can Cause a Deadlock Condition
3. Arm* Cortex*-A53 MPCore* and CoreSight* Errata x
3.1. 843819: Memory Locations May be Accessed Speculatively Due to Instruction Fetches When HCR.VM is Set 3.2. 845719: A Load May Read Incorrect Data 3.3. 855871: ETM Does Not Report IDLE State When Disabled Using OSLOCK 3.4. 855872: A Store-Exclusive Instruction May Pass When it Should Fail 3.5. 711668: Configuration Extension Register Has Wrong Value Status 3.6. 720107: Periodic Synchronization Can Be Delayed and Cause Overflow 3.7. 855873: An Eviction Might Overtake a Cache Clean Operation 3.8. 853172: ETM May Assert AFREADY Before All Data Has Been Output 3.9. 836870: Non-Allocating Reads May Prevent a Store Exclusive From Passing 3.10. 836919: Write of the JMCR in EL0 Does Not Generate an UNDEFINED Exception 3.11. 845819: Instruction Sequences Containing AES Instructions May Produce Incorrect Results 3.12. 851672: ETM May Trace an Incorrect Exception Address 3.13. 851871: ETM May Lose Counter Events While Entering WFx Mode 3.14. 852071: Direct Branch Instructions Executed Before a Trace Flush May be Output in an Atom Packet After Flush Acknowledgment 3.15. 852521: A64 Unconditional Branch May Jump to Incorrect Address 3.16. 855827: PMU Counter Values May Be Inaccurate When Monitoring Certain Events 3.17. 855829: Reads of PMEVCNTR<n> are not Masked by HDCR.HPMN 3.18. 855830: Loads of Mismatched Size May not be Single-Copy Atomic
1. About this Document
2. Intel® -Specific Errata for the Intel® Stratix® 10 DX Devices
3. Arm* Cortex*-A53 MPCore* and CoreSight* Errata
4. Document Revision History for Intel® Stratix® 10 DX Device Errata

3.3. 855871: ETM Does Not Report IDLE State When Disabled Using OSLOCK

Description

The OS Lock feature in the Embedded Trace Macrocell (ETM) allows software running on the Cortex-A53 MPCore* to disable external debug access and save the register state before powering down the ETM. Software must follow a defined sequence to ensure that the register state is stable and all trace data is output before the system is powered-down. Because of this erratum, when the OS Lock mechanism is used, the ETM never indicates to software that it is safe to be powered-off. This erratum occurs when:
  • The ETM is enabled (TRCPRGCTLR.EN = 1)
  • The OS Lock feature disables the ETM (TRCOSLAR.OSLK = 1)

Impact

When the OS lock feature is enabled and software polls TRCSTATR.IDLE, it remains high even after the ETM is disabled and drained of trace data. If the ETM is already disabled by clearing the TRCPRGCTLR.EN bit then a software save and restore sequence behaves correctly.

Workaround

To execute the disable sequence properly:
  1. Disable the ETM by setting the TRCOSLAR.OSLK bit.
  2. Save the state of the TRCPRGCTLR.EN bit.
  3. Clear the TRCPRGCTLR.EN bit.

Category

Category 2
Level Two Title