diff options
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r-- | arch/arm/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 3269576dbfa8..3146ed3f6eca 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig | |||
@@ -1283,6 +1283,20 @@ config ARM_ERRATA_364296 | |||
1283 | processor into full low interrupt latency mode. ARM11MPCore | 1283 | processor into full low interrupt latency mode. ARM11MPCore |
1284 | is not affected. | 1284 | is not affected. |
1285 | 1285 | ||
1286 | config ARM_ERRATA_764369 | ||
1287 | bool "ARM errata: Data cache line maintenance operation by MVA may not succeed" | ||
1288 | depends on CPU_V7 && SMP | ||
1289 | help | ||
1290 | This option enables the workaround for erratum 764369 | ||
1291 | affecting Cortex-A9 MPCore with two or more processors (all | ||
1292 | current revisions). Under certain timing circumstances, a data | ||
1293 | cache line maintenance operation by MVA targeting an Inner | ||
1294 | Shareable memory region may fail to proceed up to either the | ||
1295 | Point of Coherency or to the Point of Unification of the | ||
1296 | system. This workaround adds a DSB instruction before the | ||
1297 | relevant cache maintenance functions and sets a specific bit | ||
1298 | in the diagnostic control register of the SCU. | ||
1299 | |||
1286 | endmenu | 1300 | endmenu |
1287 | 1301 | ||
1288 | source "arch/arm/common/Kconfig" | 1302 | source "arch/arm/common/Kconfig" |