diff options
author | Will Deacon <will@kernel.org> | 2021-10-29 12:25:33 +0100 |
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committer | Will Deacon <will@kernel.org> | 2021-10-29 12:25:33 +0100 |
commit | e5f521021279dfc52c03c8a1c3f6159c2add1f74 (patch) | |
tree | f9b9daf87ce9e36702baeaa9649a828f12bcb2f8 /arch/arm64/Kconfig | |
parent | 655ee5571f4b4987aab4c19e8e77f2c9ac537cdb (diff) | |
parent | 8d81b2a38ddfc4b03662d2359765648c8b4cc73c (diff) |
Merge branch 'for-next/trbe-errata' into for-next/core
* for-next/trbe-errata:
arm64: errata: Add detection for TRBE write to out-of-range
arm64: errata: Add workaround for TSB flush failures
arm64: errata: Add detection for TRBE overwrite in FILL mode
arm64: Add Neoverse-N2, Cortex-A710 CPU part definition
Diffstat (limited to 'arch/arm64/Kconfig')
-rw-r--r-- | arch/arm64/Kconfig | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e63c033243e2..da9a756be674 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -666,6 +666,121 @@ config ARM64_ERRATUM_1508412 If unsure, say Y. +config ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE + bool + +config ARM64_ERRATUM_2119858 + bool "Cortex-A710: 2119858: workaround TRBE overwriting trace data in FILL mode" + default y + depends on COMPILE_TEST # Until the CoreSight TRBE driver changes are in + depends on CORESIGHT_TRBE + select ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE + help + This option adds the workaround for ARM Cortex-A710 erratum 2119858. + + Affected Cortex-A710 cores could overwrite up to 3 cache lines of trace + data at the base of the buffer (pointed to by TRBASER_EL1) in FILL mode in + the event of a WRAP event. + + Work around the issue by always making sure we move the TRBPTR_EL1 by + 256 bytes before enabling the buffer and filling the first 256 bytes of + the buffer with ETM ignore packets upon disabling. + + If unsure, say Y. + +config ARM64_ERRATUM_2139208 + bool "Neoverse-N2: 2139208: workaround TRBE overwriting trace data in FILL mode" + default y + depends on COMPILE_TEST # Until the CoreSight TRBE driver changes are in + depends on CORESIGHT_TRBE + select ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE + help + This option adds the workaround for ARM Neoverse-N2 erratum 2139208. + + Affected Neoverse-N2 cores could overwrite up to 3 cache lines of trace + data at the base of the buffer (pointed to by TRBASER_EL1) in FILL mode in + the event of a WRAP event. + + Work around the issue by always making sure we move the TRBPTR_EL1 by + 256 bytes before enabling the buffer and filling the first 256 bytes of + the buffer with ETM ignore packets upon disabling. + + If unsure, say Y. + +config ARM64_WORKAROUND_TSB_FLUSH_FAILURE + bool + +config ARM64_ERRATUM_2054223 + bool "Cortex-A710: 2054223: workaround TSB instruction failing to flush trace" + default y + select ARM64_WORKAROUND_TSB_FLUSH_FAILURE + help + Enable workaround for ARM Cortex-A710 erratum 2054223 + + Affected cores may fail to flush the trace data on a TSB instruction, when + the PE is in trace prohibited state. This will cause losing a few bytes + of the trace cached. + + Workaround is to issue two TSB consecutively on affected cores. + + If unsure, say Y. + +config ARM64_ERRATUM_2067961 + bool "Neoverse-N2: 2067961: workaround TSB instruction failing to flush trace" + default y + select ARM64_WORKAROUND_TSB_FLUSH_FAILURE + help + Enable workaround for ARM Neoverse-N2 erratum 2067961 + + Affected cores may fail to flush the trace data on a TSB instruction, when + the PE is in trace prohibited state. This will cause losing a few bytes + of the trace cached. + + Workaround is to issue two TSB consecutively on affected cores. + + If unsure, say Y. + +config ARM64_WORKAROUND_TRBE_WRITE_OUT_OF_RANGE + bool + +config ARM64_ERRATUM_2253138 + bool "Neoverse-N2: 2253138: workaround TRBE writing to address out-of-range" + depends on COMPILE_TEST # Until the CoreSight TRBE driver changes are in + depends on CORESIGHT_TRBE + default y + select ARM64_WORKAROUND_TRBE_WRITE_OUT_OF_RANGE + help + This option adds the workaround for ARM Neoverse-N2 erratum 2253138. + + Affected Neoverse-N2 cores might write to an out-of-range address, not reserved + for TRBE. Under some conditions, the TRBE might generate a write to the next + virtually addressed page following the last page of the TRBE address space + (i.e., the TRBLIMITR_EL1.LIMIT), instead of wrapping around to the base. + + Work around this in the driver by always making sure that there is a + page beyond the TRBLIMITR_EL1.LIMIT, within the space allowed for the TRBE. + + If unsure, say Y. + +config ARM64_ERRATUM_2224489 + bool "Cortex-A710: 2224489: workaround TRBE writing to address out-of-range" + depends on COMPILE_TEST # Until the CoreSight TRBE driver changes are in + depends on CORESIGHT_TRBE + default y + select ARM64_WORKAROUND_TRBE_WRITE_OUT_OF_RANGE + help + This option adds the workaround for ARM Cortex-A710 erratum 2224489. + + Affected Cortex-A710 cores might write to an out-of-range address, not reserved + for TRBE. Under some conditions, the TRBE might generate a write to the next + virtually addressed page following the last page of the TRBE address space + (i.e., the TRBLIMITR_EL1.LIMIT), instead of wrapping around to the base. + + Work around this in the driver by always making sure that there is a + page beyond the TRBLIMITR_EL1.LIMIT, within the space allowed for the TRBE. + + If unsure, say Y. + config CAVIUM_ERRATUM_22375 bool "Cavium erratum 22375, 24313" default y |