222 lines
16 KiB
ReStructuredText
222 lines
16 KiB
ReStructuredText
|
=======================================
|
||
|
|
Silicon Errata and Software Workarounds
|
||
|
|
=======================================
|
||
|
|
|
||
|
|
Author: Will Deacon <will.deacon@arm.com>
|
||
|
|
|
||
|
|
Date : 27 November 2015
|
||
|
|
|
||
|
|
It is an unfortunate fact of life that hardware is often produced with
|
||
|
|
so-called "errata", which can cause it to deviate from the architecture
|
||
|
|
under specific circumstances. For hardware produced by ARM, these
|
||
|
|
errata are broadly classified into the following categories:
|
||
|
|
|
||
|
|
========== ========================================================
|
||
|
|
Category A A critical error without a viable workaround.
|
||
|
|
Category B A significant or critical error with an acceptable
|
||
|
|
workaround.
|
||
|
|
Category C A minor error that is not expected to occur under normal
|
||
|
|
operation.
|
||
|
|
========== ========================================================
|
||
|
|
|
||
|
|
For more information, consult one of the "Software Developers Errata
|
||
|
|
Notice" documents available on infocenter.arm.com (registration
|
||
|
|
required).
|
||
|
|
|
||
|
|
As far as Linux is concerned, Category B errata may require some special
|
||
|
|
treatment in the operating system. For example, avoiding a particular
|
||
|
|
sequence of code, or configuring the processor in a particular way. A
|
||
|
|
less common situation may require similar actions in order to declassify
|
||
|
|
a Category A erratum into a Category C erratum. These are collectively
|
||
|
|
known as "software workarounds" and are only required in the minority of
|
||
|
|
cases (e.g. those cases that both require a non-secure workaround *and*
|
||
|
|
can be triggered by Linux).
|
||
|
|
|
||
|
|
For software workarounds that may adversely impact systems unaffected by
|
||
|
|
the erratum in question, a Kconfig entry is added under "Kernel
|
||
|
|
Features" -> "ARM errata workarounds via the alternatives framework".
|
||
|
|
These are enabled by default and patched in at runtime when an affected
|
||
|
|
CPU is detected. For less-intrusive workarounds, a Kconfig option is not
|
||
|
|
available and the code is structured (preferably with a comment) in such
|
||
|
|
a way that the erratum will not be hit.
|
||
|
|
|
||
|
|
This approach can make it slightly onerous to determine exactly which
|
||
|
|
errata are worked around in an arbitrary kernel source tree, so this
|
||
|
|
file acts as a registry of software workarounds in the Linux Kernel and
|
||
|
|
will be updated when new workarounds are committed and backported to
|
||
|
|
stable kernels.
|
||
|
|
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Implementor | Component | Erratum ID | Kconfig |
|
||
|
|
+================+=================+=================+=============================+
|
||
|
|
| Allwinner | A64/R18 | UNKNOWN1 | SUN50I_ERRATUM_UNKNOWN1 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Ampere | AmpereOne | AC03_CPU_38 | AMPERE_ERRATUM_AC03_CPU_38 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A510 | #2457168 | ARM64_ERRATUM_2457168 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A510 | #2064142 | ARM64_ERRATUM_2064142 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A510 | #2038923 | ARM64_ERRATUM_2038923 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A510 | #1902691 | ARM64_ERRATUM_1902691 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A53 | #826319 | ARM64_ERRATUM_826319 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A53 | #827319 | ARM64_ERRATUM_827319 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A53 | #824069 | ARM64_ERRATUM_824069 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A53 | #819472 | ARM64_ERRATUM_819472 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A53 | #845719 | ARM64_ERRATUM_845719 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A53 | #843419 | ARM64_ERRATUM_843419 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A55 | #1024718 | ARM64_ERRATUM_1024718 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A55 | #1530923 | ARM64_ERRATUM_1530923 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A55 | #2441007 | ARM64_ERRATUM_2441007 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A57 | #852523 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A57 | #1319537 | ARM64_ERRATUM_1319367 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A57 | #1742098 | ARM64_ERRATUM_1742098 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A72 | #853709 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A72 | #1319367 | ARM64_ERRATUM_1319367 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A72 | #1655431 | ARM64_ERRATUM_1742098 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A73 | #858921 | ARM64_ERRATUM_858921 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A76 | #1188873,1418040| ARM64_ERRATUM_1418040 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A76 | #1165522 | ARM64_ERRATUM_1165522 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A76 | #1286807 | ARM64_ERRATUM_1286807 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A76 | #1463225 | ARM64_ERRATUM_1463225 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A77 | #1508412 | ARM64_ERRATUM_1508412 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A510 | #2051678 | ARM64_ERRATUM_2051678 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A510 | #2077057 | ARM64_ERRATUM_2077057 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A510 | #2441009 | ARM64_ERRATUM_2441009 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A510 | #2658417 | ARM64_ERRATUM_2658417 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A710 | #2119858 | ARM64_ERRATUM_2119858 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A710 | #2054223 | ARM64_ERRATUM_2054223 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-A710 | #2224489 | ARM64_ERRATUM_2224489 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-X2 | #2119858 | ARM64_ERRATUM_2119858 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Cortex-X2 | #2224489 | ARM64_ERRATUM_2224489 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Neoverse-N1 | #1188873,1418040| ARM64_ERRATUM_1418040 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Neoverse-N1 | #1349291 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Neoverse-N1 | #1542419 | ARM64_ERRATUM_1542419 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Neoverse-N2 | #2139208 | ARM64_ERRATUM_2139208 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Neoverse-N2 | #2067961 | ARM64_ERRATUM_2067961 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | Neoverse-N2 | #2253138 | ARM64_ERRATUM_2253138 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | MMU-500 | #841119,826419 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | MMU-600 | #1076982,1209401| N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| ARM | MMU-700 | #2268618,2812531| N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Broadcom | Brahma-B53 | N/A | ARM64_ERRATUM_845719 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Broadcom | Brahma-B53 | N/A | ARM64_ERRATUM_843419 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX ITS | #22375,24313 | CAVIUM_ERRATUM_22375 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX ITS | #23144 | CAVIUM_ERRATUM_23144 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX GICv3 | #23154,38545 | CAVIUM_ERRATUM_23154 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX GICv3 | #38539 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX Core | #27456 | CAVIUM_ERRATUM_27456 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX Core | #30115 | CAVIUM_ERRATUM_30115 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX SMMUv2 | #27704 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX2 SMMUv3| #74 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX2 SMMUv3| #126 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Cavium | ThunderX2 Core | #219 | CAVIUM_TX2_ERRATUM_219 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Marvell | ARM-MMU-500 | #582743 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| NVIDIA | Carmel Core | N/A | NVIDIA_CARMEL_CNP_ERRATUM |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| NVIDIA | T241 GICv3/4.x | T241-FABRIC-4 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Freescale/NXP | LS2080A/LS1043A | A-008585 | FSL_ERRATUM_A008585 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Hisilicon | Hip0{5,6,7} | #161010101 | HISILICON_ERRATUM_161010101 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Hisilicon | Hip0{6,7} | #161010701 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Hisilicon | Hip0{6,7} | #161010803 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Hisilicon | Hip07 | #161600802 | HISILICON_ERRATUM_161600802 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Hisilicon | Hip08 SMMU PMCG | #162001800 | N/A |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Hisilicon | Hip08 SMMU PMCG | #162001900 | N/A |
|
||
|
|
| | Hip09 SMMU PMCG | | |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | Kryo/Falkor v1 | E1003 | QCOM_FALKOR_ERRATUM_1003 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | Kryo/Falkor v1 | E1009 | QCOM_FALKOR_ERRATUM_1009 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | QDF2400 ITS | E0065 | QCOM_QDF2400_ERRATUM_0065 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | Falkor v{1,2} | E1041 | QCOM_FALKOR_ERRATUM_1041 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | Kryo4xx Gold | N/A | ARM64_ERRATUM_1463225 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | Kryo4xx Gold | N/A | ARM64_ERRATUM_1418040 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | Kryo4xx Silver | N/A | ARM64_ERRATUM_1530923 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | Kryo4xx Silver | N/A | ARM64_ERRATUM_1024718 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Qualcomm Tech. | Kryo4xx Gold | N/A | ARM64_ERRATUM_1286807 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|
||
|
|
| Fujitsu | A64FX | E#010001 | FUJITSU_ERRATUM_010001 |
|
||
|
|
+----------------+-----------------+-----------------+-----------------------------+
|